Công Nghệ Chế Biến Khí Trong Nhà Máy Dinh Cố

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Công Nghệ Chế Biến Khí Trong Nhà Máy Dinh Cố

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  • TRNG CAO NG CNG NGHIP TUY HO KHOA CNG NGH HO

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    BI TIU LUN

    ti: Cng ngh ch bin kh trong nh my Dinh C

    GVHD : L Th Kim Huyn SVTH : Nhm 3

    Tuy Ho, Thng 3 Nm 2011

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    Danh sch thnh vin nhm 3 Lp CHN32B

    STT H v tn M s sinh vin

    1 Dng Vn Dng 0915512081

    2 Nguyn Th My 0915512101

    3 L Th Thng 0915512126

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    ti: Cng ngh ch bin kh trong nh my Dinh C Trang 3/29

    PHC LC PHC LC ................................................................................................................. 3 LI M U ............................................................................................................. 4 PHN 1. GII THIU CHUNG V NH MY CH BIN KH DINH C .. 5

    1.1. V tr: ................................................................................................................ 5 1.2. Mc ch chnh ca nh my: ........................................................................ 5 1.3. Cc ngun cung cp kh cho nh my: ......................................................... 5

    PHN 2. S LC V NH MY KH DINH C (GPP) ................................. 6 2.1. Nguyn l vn hnh ........................................................................................ 6 2.2. Cc giai on thit k nh my ...................................................................... 6 2.3. iu kin nguyn liu vo .............................................................................. 6 2.3. SN PHM CA NH MY ....................................................................... 7

    2.3.1. KH THNG PHM ........................................................................... 7 2.3.2. KH HA LNG (LPG) ......................................................................... 8 2.3.3. Cc sn phm ca condensat ................................................................ 10

    PHN 3 ..................................................................................................................... 12 3.1 Cc thit b chnh ca nh my .................................................................... 12

    3.1.1. Thit b SLUG CATCHER .................................................................. 12 3.1.2. Thit b bc hi V-03 ............................................................................. 12 3.1.3 Thp tch ETHAN C-01 ......................................................................... 12

    3.1.4 Thp n nh C-02 (stabilizer) ............................................................... 13 3.1.5. Thp tch C3/C4 (C-03) .......................................................................... 13

    3.1.6. GAS STRIPPER C-04 ........................................................................... 13

    3.1.7. THP LM SCH C-05 ....................................................................... 13 3.1.8. H thng tch nc V-06 A/B ............................................................... 14 3.1.9. Thit b TURBO EXPANDER ........................................................... 14 3.1.10. My nn kh .......................................................................................... 15

    3.2. BA CH VN HNH CA NH MY CH BIN KH DINH C .. ................................................................................................................................ 15

    3.2.1. CH AMF ........................................................................................ 16 3.2.2. CH MF ........................................................................................... 19 3.2.3. CH GPP ......................................................................................... 22 3.2.4. M t ch vn hnh GPP. ................................................................ 22

    3.3 CH VN HNH HIN TI CA NH MY (GPP CHUYN I) ................................................................................................................... 25 3.3.1. M t ch GPP chuyn i. .............................................................. 25

    KT LUN ............................................................................................................... 29

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    LI M U

    Khng ring g Vit Nam, hin nay trn th gii vn nng lng rt c quan tm v ch trng pht trin. Bi nng lng lun c xem l huyt mch ca mt quc gia, n tc ng tch cc n vic pht trin kinh t cng nh quc phng.

    Vit Nam l quc gia giu tim nng v du kh, tuy ch mi bc u khai thc v pht trin, tim nng v khai thc v ch bin du cha tht s pht trin. Tuy nhin nn cng nghip kh Vit Nam cng t c nhiu kt qu to ln, p ng c nhu cu tiu dng trong nc.

    Hin ti, Vit Nam hnh thnh nn nhiu tp on du kh nh: Vietso Petro, Petro Vietnam, Saigon Petro; cc cng ty du kh nc ngoi nh: BP (vng quc Anh), ONGC Videsh (n ), Conocophillips (M), JVPC lin doanh Vit - Nht gp phn thc y ng k n vic pht trin ngnh du kh cn non tr Vit Nam.

    c s u t v quan tm c bit ca chnh ph Vit Nam, nng lng ni chung v nng lng kh ni ring pht trin vi tc kh nhanh v bn vng. Thng 10 nm 1998, nh my x l kh Dinh C i vo hot ng, nh du bc pht trin vt bt ca ngnh cng nghip kh Vit Nam.

    Trong bi tiu lun ny, nhm chng ti xin trnh by v cng ngh ch bin kh trong nh my Dinh C.

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    ti: Cng ngh ch bin kh trong nh my Dinh C Trang 5/29

    PHN 1. GII THIU CHUNG V NH MY CH BIN KH DINH C

    1.1. V tr:

    Nh my ch bin kh Dinh C c xy dng ti th x An Ngi, huyn Long t, Tnh B Ra Vng Tu, cch Long Hi 6 km v pha bc, cch im tip b ca ng ng dn kh t Bch H khong 10 km. Din tch nh my 89.600 m2 (di 320 m, rng 280m).

    1.2. Mc ch chnh ca nh my:

    X l, ch bin kh ng hnh thu gom c trong qu trnh khai thc du ti m Bch H.

    Cung cp kh thng phm lm nhin liu cho cc nh my in B Ra, Ph M, v lm nhin liu cho cc ngnh cng nghip khc.

    Thu hi cc sn phm lng c gi tr kinh t cao hn so vi kh ng hnh ban u.

    Vic xy dng nh my s tn dng c mt lng ln kh ng hnh b t lng ph ngoi khi v lm tng hiu qu kinh t trong qu trnh s dng n. Hn na kh ng hnh l mt ngun nng lng sch s dng, c gi thnh r v c xem l nhin liu l tng thay th than, ci, du diesel

    1.3. Cc ngun cung cp kh cho nh my:

    Kh ng hnh t m Bch H (107 km) ngoi khi b bin Vng Tu c vn chuyn qua ng ng 16 ti Long Hi v c x l ti nh my GPP Dinh C thu hi LPG v cc hydrocarbon nng hn. Kh kh sau khi tch hydrocarbon nng c vn chuyn ti B Ra v Ph M dng lm nhin liu cho nh my in.

    Hin nay, do sn lng kh t m Bch H ang gim dn theo thi gian nn nh my s tip nhn kh b sung t cc m khc t khu vc b Cu Long: S T Trng, Rng - i Mi, T Gic Trng

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    PHN 2. S LC V NH MY KH DINH C (GPP)

    2.1. Nguyn l vn hnh

    Kh ng hnh c thu gom t m Bch H, c dn vo b theo ng ng 16 v c x l ti nh my kh Dinh C nhm thu hi LPG v cc hydrocarbon nng hn. Phn kh kh c lm nguyn liu cho nh my in Ph M, B Ra.

    Nh my c thit k vi cng ngh Turbo-Expander nhm thu hi C3,C4, v condensate. Cc sn phm lng, kh sau khi ra khi nh my c dn vo theo ba ng ng 6 n kho cng sut LPG Th Vi cch Dinh C 28 km.

    2.2. Cc giai on thit k nh my

    Nhm m bo cho vic vn hnh nh my c linh ng ( phng mt s thit b chnh gp s c).

    m bo cho hot ng ca nh my c lien tc khi thc hin bo dng sa cha thit b thit b khng nh hng n cp kh cho cc h tiu th.

    Nh my c thit k vn hnh 03 ch khc nhau.

    Giai on AMF: bao gm hai thp chng ct, ba thit b trao i nhit, ba bnh tch thu hi khong 340 tn condensate/ngy m t 4,3 triu m3 kh m/ngy m. Gai on ny khng c my nn no c s dng.

    Giai on MF: bao gm cc thit b AMF v b sung thm mt thit b chng ct, mt my nn pittng chy kh 800 kW, ba thit b trao i nhit, ba bnh tch thu hi hn hp bupro khong 630 tn/ngy m v condensate khong 380 tn/ngy m.

    Giai on GPP: vi y cc thit b nh thit k thu hi 540 tn propan/ngy, 415 tn butan/ngy m v 400 tn condensate/ngy m. GPP bao gm cc thit b ca MF b sung thm: 1 turbo-expander 2200 kW, my nn pittong 2 cp chy kh 1200 kW, 2 thp chng ct, cc thit b trao i nhit, qut lm mt v cc thit b khc.

    Theo thit k ban u, nh my ch s dng mt my nn pittong K-01A hi lu lng kh nh thp tch etan nhm tng hiu sut thu hi sn phm lng hoc c th a ra trn vi kh kh cung cp cho nh my in, khi phi dng my nn ny bo dng hoc khi gp s c, th ton b lng kh nh thp C-01 s phi b t b rt lng ph v nh hng n mi trng. Do nh my c lp t thm my nn th 2 (K-01B)

    Sau khi hon tt ch GPP, ty vo iu kin v hon cnh m vic s dng cc ch c p dng linh hot.

    K t nm 2002, sau khi a vo vn hnh trm nn kh u vo nh my vn hnh theo ch GPP chuyn i do nh thu Flour Daniel nh gi v thit k li.

    2.3. iu kin nguyn liu vo

    p sut: 109 bar

    Nhit : 25,60C

    Lu lng: 5,7 triu m3 kh/ngy

    Hm lng nc: cha nc iu kin vn chuyn cp cho nh my. Hm lng nc ny s c kh bng thit b kh nc trc khi vo nh my.

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    ti: Cng ngh ch bin kh trong nh my Dinh C Trang 7/29

    Bng 2.3. Thnh phn kh vo nh my

    Cu t Phn mol (%) Cu t Phn mol (%)

    N2 0,21 C6 0,51

    CO2 0,06 C7 0,26

    CH4 70,85 C8 0,18

    C2 13,41 C9 0,08

    C3 7,5 C10 0,03

    iC4 1,65 Cyclo C5 0,05

    nC4 2,37 Cyclo C6 0,04

    iC5 0,68 Benzen 0,04

    nC5 0,73 H2O 1,3

    2.3. SN PHM CA NH MY

    2.3.1. KH THNG PHM

    Kh thng phm cn gi l kh kh. L kh qua ch bin p ng c tiu chun vn chuyn bng ng ng v tho mn c cc yu cu ca khch hng. Kh kh c thnh phn ch yu l CH4 (khng nh hn 90%) v C2H4. Ngoi ra cn c ln cc hydrocacbon nng hn v cc kh khc nh H2, N2, CO2 ty thuc vo iu kin vn hnh m thnh phn kh c th thay i.

    Bng 2.3.1a. Thnh phn kh thng phm ca nh my x l kh Dinh C

    Lu lng kh 5,7 triu m3 kh/ngy

    Thnh phn % mol Thnh phn % mol

    N2 0,178 iC5H12 0,0508

    CO2 0,167 nC5H10 0,005

    CH4 81,56 C6H14 0,016

    C2H6 13,7 C7H16 0,00425

    C3H8 3,35 C8+ 0,00125

    iC4H10 0,322 Hi nc 0,00822

    nC4H10 0,371

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    Bng 2.3.1b. Cc thng s k thut c trng ca kh kh

    Nh my in ni chung

    p sut ti thiu, bar Tu theo mi nh my

    Nhit 200C trn im sng

    Nhit im sng -100C

    Nhit im sng ca nc -750C

    Tng nhit lng ti a 38,000 KJ/m3

    Lng cc tp cht 30 ppm

    H2S 20 40 ppm

    N2, He, Ar < 2%

    2.3.2. KH HA LNG (LPG)

    Kh ho lng gi tt l LPG, c thnh phn ch yu l propan v butan c nn li cho ti khi ho lng (p sut hi bo ha) mt nhit nht nh tn cha v vn chuyn. Khi t th kh chuyn sang th lng th th tch ca n gim 250 ln.

    Butan v propan l hai sn phm thu c t s phn tch Bupro.

    Thnh phn ca LPG:

    Thnh phn ch yu ca LPG l cc cu t C3 v C4 gm c:

    Propan (C3H8): 60% mol

    Butan (C4H10): 40% mol

    Ngoi ra cn cha hm lng nh cu t etan v pentan trong LPG cn cha cc cht to mi mercaptan (R-SH) vi t l nht nh (nh my GPP hin ang s dng 40 ppm) khi r r c th nhn bit bng khu gic. Tt c cc cu t u tn ti th lng, di nhit trung bnh v p sut thng.

    i vi LPG ng chai th tu theo iu kin mi trng s dng ca tng vng, tng nc m yu cu cc cu t C3, C4 l khc nhau. V d, i vi nhng vng c kh hu lnh, m bo kh nng ha hi khi s dng th yu cu hm lng cu t C3 nhiu hn C4, v nhng nc c kh hu nng th ngc li.

    i vi nhu cu cng nghip, cht lng thng c ho hi nh thit b gia nhit bn ngoi h tr. Thnh phn ch yu ca LPG vn ch yu l C3 v C4, nu sn phm l butan th thnh phn C5 chim ti a l 2%. Thnh phn LPG phi m bo kh nng bay hi 95% th tch lng nhit quy nh.

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    ti: Cng ngh ch bin kh trong nh my Dinh C Trang 9/29

    Bng 2.3.2 Cc thng s k thut c trng ca LPG ca nh my ch bin kh Dinh C

    Sn phm Propan Butan

    p sut hi bo ha 13 bar 37.70C 4.83 bar 37.70C

    Hm lng etan Chim ti a 2% th tch Chim ti a 2% th tch

    Hm lng propan Chim ti a 96% th tch Chim ti a 2% th tch

    Hm lng butan Chim ti a 2% th tch Chim ti a 96% th tch

    Butan th lng v th kh u nng hn propan nhng cng mt lng th propan to ra mt th tch kh ln hn. Nhit si v p sut hi bo ha cch nhau kh xa.

    ha lng propan th cn iu kin: t0 = -45, P = 1bar hoc t0 = 200C, P = 9bar

    ha lng butan th cn iu kin: t0 = -20C, P = 1bar hoc t0 = 200C, P = 3bar.

    Sn lng LPG t c vn hnh nh my tng ch khc nhau

    Bupro

    Ch AMF MF GPP

    Lu lng (tn/ngy) 640

    p sut (bar) 13

    Nhit (0C) 47,34

    Propan

    Ch AMF MF GPP

    Lu lng (tn/ngy) 535

    T l thu hi (%) 85,2

    p sut (bar) 18

    Nhit (0C) 45,57

    % mol C4 cc i 2,5

    Butan

    Ch AMF MF GPP

    Lu lng (tn/ngy) 415

    T l thu hi (%) 92

    p sut (bar) 9

    Nhit (0C) 45

    % mol C5 cc i 2,5

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    2.3.3. Cc sn phm ca condensat

    a. Ngun gc chung ca condensat

    Condensat cn gi l kh ngng t l hn hp ng th dng lng c mu vng rm. Do cc bn cha condensat c sn mu vng rm. Condensat thu c t ngun kh m. Di cc m du hoc m kh, cc hp cht hu c c s nguyn t cacbon nh hn 17, di tc dng ca nhit , p sut m c th trng thi lng, kh.

    Condensat Vit Nam c hai loi

    Condensat c tch t bnh lng t ti gin khoan. Kh i ra t bnh tch kh (C1C4) p sut va (3 40bar) v nhit 1030C. Sau kh kh theo ng ng 12 xung y bin n gin nh BK3 v quay tr li CPP2 vi chiu di 6300m. nhit t 20 250C do kh ng hnh s c gim nhit t 80 900C xung cn 20 250C, do s gim nhit cho nn condensat s hnh thnh trong ng ng. Khi quay li hn hp hai pha kh lng s a qua van cu joule_thompson. Kh s tt p khong 2bar v nhit s gim 1,50C do hiu ng joule_thompson. Tip hn hp hai pha s c a vo bnh tch th 2, l bnh tch condensat, phn condensat c tch ra v bm trn vi du th xut khu v kh c a sang dng ng ng a vo b. Tr lng condensate ny khng ln.

    Loi 2 l condensate c ngng t trong qu trnh vn chuyn ng ng. giai on th hai ca n s dng kh thin nhin vit nam ng ng vn chuyn 1500 triu m3/nm. Kh s m hn do s c nhiu condensate ngng t hn. ng ng vn hnh theo kiu 2 pha vi p sut 125bar v t0=450C. Ti Dinh C condensate s c thu gom v nhp chung vi condensate t nh my ch bin kh, sn lng condensate ny l 9500 tn/nm.

    Cc c tnh k thut ca condensate:

    p sut hi bo ha (Kpa): 60

    C5- : 13%

    T trng (Kg/m3): 310

    nht (Cp): 0,25647

    b. Cc sn phm ch bin t condensat:

    Cc loi nhin liu:

    Bng cch pha ch condensat vi reformat c ch s octan cao ng thi cng thm ph gia chuyn dng MTBE s c xng thnh phm M83.

    Bng cch thc hin qu trnh reformat xc tc hay isome ha, sau pha ch vi ph gia s c xng thng phm MOGAS83, MOGAS92.

    Bng cch chng ct condensat s thu c thnh phn pha ch xng v du la.

    Cc loi dung mi:

    Dung mi du m l phn on hydrocacbon d bay hi, sn xut trc tip hay gin tip t du m, bao gm cc hydrocacbon t C4-C10. Cc dung mi ny c s dng rng ri trong qu trnh sn xut cng nghip. Chng c th l thnh phn cu thnh ca sn phm cui cng nh sn xut sn, mc in, cht dnh. Chng c th s dng trong qu trnh trch ly nh trong qu trnh tch du thc vt t cc ht cha du, cc cht khong, dc

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    ti: Cng ngh ch bin kh trong nh my Dinh C Trang 11/29

    phm hoc n gin dng trong dung mi ty ra, trong bo dng. Cc dung mi du m l cht lng trong sut hoc c mu vng nht, khng ha tan trong nc nhng ha tan rt tt trong cc dung mi hu c. Kh nng ho tan cc cht ca n ty thuc vo thnh phn ha hc v tnh cht phn cc.

    Dung mi PI(0F) PF(0F)

    Ete du ha 86 140

    Dung mi cao su 150 250

    Naphta sch 350 450

    Dung mi pha sn 420 560

    Ngoi cc dung mi trn, cng bng qu trnh chng ct ta thu c cc sn phm khc nh: n-pentan, n-heptan, naphtan nh

    Cc sn phm ha du:

    Condensat qua qu trinh crakinh hi c th sn xut cc olefin nh Etylen, Butadien, nhng ni khng Etan hay Propan lm nguyn liu th condensat l nguyn liu rt qu sn xut olefin. Condensat qua qu trnh reforming xc tc c th sn xut BTX.

    Sn lng condensate thu c khi vn hnh nh my cc ch khc nhau

    Ch AMF MF GPP

    Lu lng (tn/ngy) 330 380 400

    Ap sut (bar) 8 8 8

    Nhit (0C) 45 45 45

    % mole C4 cc i 2 2 2

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    PHN 3

    QUY TRNH CNG NGH SN XUT

    CA NH MY CH BIN NH MY DINH C

    3.1 Cc thit b chnh ca nh my

    3.1.1. Thit b SLUG CATCHER

    Thit k ban u:

    p sut: 109 bar

    Lu lng kh t SC-01/02: 4,3 trm3/ngy.

    Lu lng lng v V-03: Tng ng 0,5 triu m3/ngy.

    Vn hnh hin ti:

    p sut : 70 75 bar.

    Lu lng lng t SC-01/02: 4,9 trm3/ngy

    Lu lng lng v V-03: Tng ng 0,6 triu m3/ngy.

    Theo nh gi ca Fluor Daniel Inc. trong tng lai SC-01/02 vn kh nng tip nhn v x l dng kh m u vo vi lu lng khong 6 triu m3/ngy. Tuy nhin kh nng lng b cun theo s tng ln do cn c bit lu n h thng scrubbers ca my nn u vo.

    Hn hp kh v condensat t ngoi m vo, c a n Slug Catcher (SC-01, 02) phn tch Condensat v nc t kh, di p sut vn hnh 109 bar v nhit 25,60C. SC bao gm hai h thng ng, mi h c dung tch 1400 m3. Khi phn tch c gp li u gp 30 v a n thit b ch cng ngh tip theo.

    Lng condensat tch ra c gp u gp 36 v s c a i di s iu khin mc (LIC-0111A & B), mc iu khin c chia lm hai mc A (cao), B (thp) bi thit b iu khin bng tay HS-0111, 0112. Trong trng hp lng lng ln mc cao H th van vo s ng, cn mc thp th dng lng s ng tranh hin tng sc kh vo thit b V-03.

    Nc t thit b SC n thit b ILIC-0112 &0122 thng qua bnh tch nc v sn phm V-52 (nc c gim p n p sut kh quyn v hydrocacbon hp ph s c gii phng qua h thng thng gi), nc s c a n Brun pit (ME-52) t, vi vic iu khin mc thp th ng dn nc s c ng trnh cc hydrocacbon st vo thit b tch nc V-52.

    3.1.2. Thit b bc hi V-03

    Thit b bc hi V-03 l thit b bc hi ba pha nm ngang, vn hnh p sut 75bar, nhit 180C. Mc ch ca thit b ny tch hydrocacbon nh hp th trong condensat.

    3.1.3 Thp tch ETHAN C-01

    Thp chng ct C-01 l thit b trong thc hin qu trnh phn tch gia C2 v C3. C2- v mt phn nh C3 s i ra khi nh pha kh, phn ln lng C3+ v mt phn nh C2 ra khi y C-01 dng lng s c a ti thp C-02 phn tch tip thnh LPG v condensate.

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    ti: Cng ngh ch bin kh trong nh my Dinh C Trang 13/29

    3.1.4 Thp n nh C-02 (stabilizer)

    Nhit :

    nh thp: 56 580C.

    Nhit dng nhp liu: 650C.

    y thp: 125 1300C.

    p sut: 11 bar.

    Lu lng dng nhp liu: 115 120 m3/h.

    Stabilizer c lp t ch MF v GPP nhng cng c th chy n ch AMF d phng. Trong ch AMF thp tch C-01 hot ng nh mt thp n nh bng s bc hi ca butan v cc hydrocacbon nh hn ra khi condensat nhit rt cao, ti thit b un si li l 1490C trong trng hp thit b n nh khng hot ng. Nu ngi ta thu hi LPG trong ch AMF th thp tch etan hot ng ng chc nng ca n nhit un si li thp hn v thit b C-02 c th c s dng.

    3.1.5. Thp tch C3/C4 (C-03)

    Thit b C-03 c lp t ch GPP nhng cng c th hot ng ch MF v AMF d phng. ch MF ngi ta khng phn tch C3, C4 m sn phm lng l hn hp C3, C4. Tuy nhin nu ngi ta cn tch C3 khi C4 th cng c th chy thit b ny.

    3.1.6. GAS STRIPPER C-04

    Thit b C-04 ch c lp t ch GPP nn cng nn chy n ch MF sau khi hon chnh ch GPP. ch AMF sau khi hon chnh ch GPP, hai my nn alter c th c s dng nhng c th khng dng mt ci. Khi ch AMF, nu kh dng stripping l kh n t nh thp deethaniser khng s dng c. My nn cn li c dng gi lu lng ca condensat n t V-03 trong ch GPP cho d kh stripper khng s dng c.

    3.1.7. THP LM SCH C-05

    Lu lng theo thit k: 200.000 sm3/h

    p sut: 33,5 bar.

    Vn hnh hin ti:

    Lu lng tng: 245.000 sm3/h

    Nhit

    nh thp : -45 oC

    y thp: -11 -12 oC.

    - p sut: 35-37 barA.

    - Dng nguyn liu th nht (t E-14 ):

    Lu lng : 85.000 90.000 m3/h

    Nhit : -60 - 62oC.

  • --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- Tiu lun hc phn: Cng ngh ch bin kh GVHD: L Th Kim Huyn TH: Nhm 3 Trang 14 / 29

    - Dng nguyn liu th 2 (t CC-01):

    Lu lng: 160.000 -165.000 sm3/h.

    Nhit : -11 -15oC.

    - Nhit :

    nh thp : 10-12 oC.

    Nhit dng nhp liu: 65-70 oC.

    y thp: 100 oC.

    - p sut: 27 barA.

    - Lu lng dng nhp liu t V-03: 15.000-20.000 Kg/h.

    - Lu lng dng lng t C-05: 130-140 m3/h.

    3.1.8. H thng tch nc V-06 A/B

    Thng s thit k:

    Lu lng dng: 5 triu m3/ngy.

    p sut vn hnh: 109 bar.

    Nhit : 30 2300C.

    Hm lng nc u vo: hm lng nc bo ho trong kh 109bar v 260

    Outlet Dew point: -65 oC.

    Chnh p ti a cho php: 80 kpa.

    Hai thp lm vic song song, thi gian chuyn thp l 8h.

    Do c h thng tch nc bng dietthylene glycol t thng ngun ti gin nn trung tm nn chu k lm vic hin nay c th ko di ln 24h. Do nu m rng cng sut dng kh u vo th V-06A/B vn kh nng tip nhn v x l dng kh u vo vi lu lng ln hn. Tuy nhin cn phi tnh n kh nng rt ngn chu k lun chuyn thp v tnh ton chnh p qua V-06.

    3.1.9. Thit b TURBO EXPANDER

    Thng s thit k:

    Lu lng dng vo u gin n max: 170.000 sm3/h

    p vo/ra u gin: 109/33 bar.

    Lu lng u nn: 150.000 sm3/h

    p vo/ra u nn: 33/48 bar.

    Vn hnh hin ti:

    Lu lng dng vo u gin n: 165.000-170.000 sm3/h

    p vo/ra u gin: 109/35-38 bar.

    Lu lng u nn: 200.000-210.000 sm3/h

    p vo/ra u nn: 35-38/48 bar.

    Cn c theo thit k cng sut vn hnh ca CC-01 v E-14 t gi tr ti a v khng c kh nng tng c na.

  • ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

    ti: Cng ngh ch bin kh trong nh my Dinh C Trang 15/29

    Thit b gm hai phn chnh: expander v my nn.

    Phn expander: gm hai phn, 3 dng kh t V-06 vo expander t 109bar xung 33,5bar lm cho nhit dng gim xung n -180C. nhit ny ch yu cc hydrocacbon nng (C3+) c ha lng v a n thp C-05 nh ngun np liu.

    Phn my nn: khi qu trnh gim p ti turbo expander xy ra th dng kh s c sinh cng lm quay qut gi trong expander, cng c dn qua trc truyn ng dng chy my nn tng p sut ca dng kh ra t nh thp C-05 t 33,5bar ln 47bar.

    3.1.10. My nn kh

    My nn kh m nh my s dng y l my nn kiu piston v kiu ly tm: my nn K-01 l loi my nn piston mt cp, K-02 v K-03 l loi my nn kiu piston hai cp, my nn K-04 l loi my nn ly tm.

    Mc ch ca cm my nn K-01, K-02, K-03 l thu hi trit C3+ t kh ra ca C-01 nn ln p sut 109bar a li nh my.

    3.2. BA CH VN HNH CA NH MY CH BIN KH DINH C

    Nh my ch bin kh Dinh C c thit k x l, ch bin vi nng sut 1.5 t m3 kh/nm (khong 4.3 triu m3/ngy). Nguyn liu s dng cho nh my l kh ng hnh t m Bch H, c x l thu LPG v condensat, kh cn li c s dng lm nhin liu cho cc nh my in B Ra v Ph M.

    Cc thit b x l c thit k vn hnh lin tc trong 24h trong ngy (hot ng 350 ngy/nm) v thi gian hot ng ca nh my l 30 nm.

    cho vic vn hnh nh my c linh ng, phng mt s thit b chnh ca nh my b s c, cng nh bo m trong qu trnh bo dng, sa cha cc thit b khng nh hng n vic vn hnh cung cp kh cho cc nh my in m vn m bo thu c mt lng sn phm lng th nh my c lp t v hot ng theo ba ch .

    Ch AMF (absolute minimun facility): cm thit b ti thiu tuyt i, ch ny phng thc lm lnh bng EJ (thit b ha dng) cho nn qu trnh lm lnh khng su (200C theo thit k), do sn phm thu c l condensat v kh kh khng tch LPG. Kh thng phm vi lu lng 3.7 triu m3 kh/ngy cung cp cho cc nh my in v thu hi condensat vi sn lng 340 tn/ngy.

    Ch MF (minimum facility): cm thit b ti thiu thu c ba sn phm l kh kh, LPG v condensat. Trong ch phng thc lm lnh l cc thit b trao i nhit nn nhit xung thp hn so vi ch AMF do c th ngng t C3, C4 trong kh nn sn phm cho ta thm Bupro (hn hp butan v propan). Sn lng condensat l 380 tn/ngy v Bupro l 630 tn/ngy.

    Ch GPP (gas processing plant): nh my x l kh. y l ch ti u nht, phng thc lm lnh bng Turbo Expander c kh nng lm lnh su hn ch MF. Ngoi ra trong ch ny cn c th tch ring butan v propan, sn lng propan 540 tn/ngy, butan l 415 tn/ngy, condensat l 400 tn/ngy.

  • --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- Tiu lun hc phn: Cng ngh ch bin kh GVHD: L Th Kim Huyn TH: Nhm 3 Trang 16 / 29

    3.2.1. CH AMF

    3.2.1.1. Mc ch :

    Ch AMF c kh nng a nh my sm i vo hot ng nhm cung cp kh thng phm vi lu lng 3,7 triu m3/ngy cho cc nh my in v thu hi condensat vi sn lng 340 tn/ngy. y ng thi cng l ch d phng cho ch MF, khi cc thit b trong ch MF, GPP xy ra s c hoc cn sa cha, bo dng m khng c thit b d phng.

    3.2.1.2. Cc thit b chnh

    y l ch nh my cm thit b ti thiu tuyt i. N ch bao gm cc thit b chnh sau:

    Hai thp chng ct C-01, C-05.

    Ba bnh tch V-06, V-08, V-15.

    My nn Jet Compresser EJ-01 A/B.

    Bn cha Condensat TK-21,

    3.2.1.3. M t ch vn hnh AMF

    Kh ng hnh t m Bch H c a ti Slug Catcher ca nh my bng ng ng 16 vi p sut 109 bar, nhit 25,60C. Ti y, condensat v kh c tch ra theo cc ng ring bit tip tc x l, cn nc cha trong condensat cng c tch nh trng lc v a vo bnh tch nc (V-52) x l. y nc c gim p ti p sut kh quyn v hydrocacbon b hp th s c gii phng a vo t h thng ct uc. Nc sau c a ti hm t (ME-52).

    Dng lng i ra t Slug Catcher s c gim p v a vo bnh tch V-03 hot ng 75 bar v c duy tr nhit 200C. V-03 dng tch hydrocacbon nh hp th trong lng bng cch gim p. Vi vic gim p t 109 bar xung 75 bar, nhit s gim thp hn nhit hnh thnh hydrate nn trnh hin tng ny bnh c gia nhit n 200C bng du nng thit b E-07. Sau khi ra khi V-03 dng lng ny c trao i nhit ti thit b E-04A/B tn dng nhit.

    Dng kh thot ra t Slug Catcher c dn vo bnh tch/lc V-08 nhm tch trit cc ht lng nh b cun theo dng kh do SC khng tch c v lc cc ht bi trong kh (nu c) trnh lm h hng cc thit b ch bin kh pha sau.

    Kh t u ra ca V-08 c a vo thit b ha dng EJ-01A/B/C gim p sut t 109 Bar xung 47 Bar. Vic gim p ca kh trong EJ c tc dng ht kh t nh thp C-01. u ra ca EJ-01A/B/C l dng hai pha c p sut 47 bar v nhit 200C cng vi dng kh nh t V-03 gim p c a vo thp C-05. Mc ch ca EJ-01A/B/C l nn kh thot ra t nh thp C-01 ln p sut lm vic ca thp C-05, v vy n gi p sut lm vic ca thp C-01 n nh.

  • ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

    ti: Cng ngh ch bin kh trong nh my Dinh C Trang 17/29

    Thp C-05 hot ng p sut 47 bar, nhit 200C. Phn nh ca thp hot ng nh b tch kh lng. Thp C-05 c nhim v tch phn lng ngng t do s st p ca kh t 109 bar xung 47 bar khi qua EJ-01A/B/C. Dng kh ra t nh thp C-05 c a ra ng kh thng phm cung cp cho cc nh my in. Lng ti y C-05 c a vo a trn cng ca thp C-01.

    ch AMF thp C-01 c 2 dng nhp liu:

    Dng t V-03 vo a th 14 ca thp C-01.

    Dng lng t y ca thp C-05 vo a trn cng ca thp C-01.

    p sut hi ca condensat c gim i v c iu chnh trong thp C-01 nhm mc ch ph hp cho vic cha trong bn cha ngoi tri. Vi ngha trong ch AMF thp C-01 hot ng nh l thp n nh condensat. Trong , phn ln hydrocacbon nh hn Butan c tch ra khi Condensat bi thit b gia nhit ca y C-01 l E-01A/B n 1940C. Kh ra nh thp c nhit 640C c trn vi kh nguyn liu nh EJ-01A/B/C. Dng Condensat y thp c trao i nhit ti E-04A/B v c lm lnh bng khng kh E-09 gim nhit xung 450C trc khi ra ng ng dn Condensat v kho cng hoc cha vo bn cha TK-21.

  • --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- Tiu lun hc phn: Cng ngh ch bin kh GVHD: L Th Kim Huyn TH: Nhm 3 Trang 18 / 29

    C-05

    Kh ng hnh

    V-08

    Kh thng phm

    E-07 V-03

    Nc

    E-04 Condensate

    V-15 E-01A/B Du nng

    S m t ch cng ngh AMF

    K hiu: C : thp tch phn

    on SC slug catcher V bnh cha E - thit b trao i nhit ME - thit b o m

    SC

    E-09

    TK-21

    Du nng

  • ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

    ti: Cng ngh ch bin kh trong nh my Dinh C Trang 19/29

    3.2.2. CH MF

    3.2.2.1. Mc ch.

    Trong ch vn hnh MF, sn phm ca nh my ngoi lng kh thng phm cung cp cho cc nh my in, cn thu c lng Condensat l 380 tn/ngy v lng Bupro l 630 tn/ngy.

    3.2.2.2. Cc thit b chnh.

    y l ch hot ng trung gian ca nh my. MF l ch ci tin ca ch AMF. Nn ch ny nh my bao gm ton b cc thit b ca ch AMF (tr EJ-A/B/C) cng thm cc thit b chnh sau :

    Thp n nh Condensat C-02

    Cc thit b trao i nhit : E-14, E-20

    Thit b hp th V-06A/B

    My nn K-01, K-04A/B

    3.2.2.3. M t ch vn hnh MF

    Dng kh t Slug Catcher c a n bnh tch lc V-08, y l thit b c thit k tch nc, hydrocacbon lng, du v lc cc ht rn. Mc ch ca V-08 l bo v lp cht hp th trong V-06A/B khi b hng hoc gim tc dng v gim tui th ca chng. Sau khi c loi nc ti V-06A/B dng kh c a ng thi n hai thit b E-14 v E-20 lm lnh. Dng kh sau khi ra khi E -14 v E-20 l dng hai pha lng kh c a vo thp C-05 tch lng. Kh ra ti nh thp C-05 lm tc nhn lnh bc 1 cho dng nguyn liu ti E-14 (nhit gim t 26,50C xung -170C) trc khi lm lnh bc hai ti van gin n, dng kh thng phm ra t nh C-05 ny sau khi qua E-14 nhit c tng ln iu kin cung cp cho cc nh my in.

    Hai thp hp th V-06A/B c s dng lun phin, khi thp ny lm vic th thp kia ti sinh. Qu trnh ti sinh c thc hin nh s cung cp nhit ca mt phn dng kh thng phm c gia nhit n 2200C bng dng du nng ti E-18, dng kh ny sau khi ra khi thit b V-06A/B s c lm ngui ti E-15 v c tch lng V-07 trc khi ra ng kh thng phm.

    S dng lng trong ch MF ging nh trong ch AMF, ngoi tr vic a kh t V-03 n C-01 thay v n C-05 nh ch AMF. Ngoi ra trong ch MF, thp C-02 c a vo thu hi Bupro.

    Nhm tn thu bupro v tch mt t metan, etan cn li, dng kh t V-03 c a n thp C-01 tch trit lng metan, etan.

    Dng lng t thit b V-03 c a n thp C-01 sau khi c gia nhit t 200C ln 800C ti thit b E-04A/B nh dng lng ra t thp n nh C-02.

    C 3 dng nguyn liu c a n thp C-01:

    Dng kh n t V-03 vo gia a th 2 v 3 ca thp C-01

    Dng lng t V-03 vo a th 20 ca thp C-01

    Dng lng n t y C-05 vo a trn cng ca thp C-01

  • --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- Tiu lun hc phn: Cng ngh ch bin kh GVHD: L Th Kim Huyn TH: Nhm 3 Trang 20 / 29

    Ti y cc hydrocacbon nh nh C1, C2 c tch ra v i ln nh thp, sau n c nn t 25 bar ln 47 bar nh my nn K-01 trc khi c dn qua ng dn kh thng phm.

    Phn lng ra t y thp C-01 c a n thp C-02.

    Thp C-02 lm vic p sut 11 bar, nhit nh 600C v nhit y 1540C. Ti y C5+ c tch ra y thp, sau chng c dn qua thit b trao i nhit E-04A/B gia nhit cho dng lng ra t y V-03. Sau khi ra khi E-04A/B lng lng ny c a n lm lnh ti thit b trao i nhit bng khng kh E-09 trc khi a ra ng ng hoc ra bn cha condensat TK-21.

    Phn hi ra khi nh thp C-02 l Bupro, hi Bupro c ngng t ti E-02, mt phn c cho hi lu tr li C-02 m bo phn tch ca sn phm, phn cn li theo ng ng dn sn phm Bupro.

  • ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

    ti: Cng ngh ch bin kh trong nh my Dinh C Trang 21/29

    Kh ng hnh

    V-08

    V-06

    E-15

    E-18

    SC

    V-07 K-04

    F-01

    E-20

    V-12 K-01

    E-04

    E-01A/B V-15

    E-02 V-02

    P-01A/B

    E-03

    E-09

    E-07 V-03

    Nc

    SP condensate

    Bupro

    Bupro

    Kh

    thng phm

    C-05

    C-01 C-02

    S m t ch cng ngh MF

    K hiu: C thp tch phn on V - thit b tch SC slug catcher E - thit b trao i nhit K my nn

    P bm

    Du nng Du nng

    E-14

    TK-21

    V-21A

    V-21B

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    3.2.3. CH GPP

    3.2.3.1. Mc ch.

    Trong ch vn hnh ny sn phm thu c ca nh my bao gm: khong 3,34 triu m3 kh/ngy cung cp cho cc nh my in, Propan khong 540 tn/ngy, Butan khong 415 tn/ngy v lng Condensat khong 400 tn/ngy.

    3.2.3.2. Cc thit b chnh.

    y l ch hon thin ca nh my ch bin kh. Ch ny bao gm cc thit b ca ch MF v cng thm mt s cc thit b chnh sau:

    Mt thp tch C3/C4 : C-03

    Mt thp Stripper : C-04

    Hai my nn K-02, K-03

    Thit b Turbo expander: CC-01

    Cc thit b trao i nhit: E-17, E-11

    3.2.4. M t ch vn hnh GPP.

    Kh t ngoi khi vo nh my c tip nhn u tin ti Slug Catcher (SC-01/02), y dng nguyn liu l dng hai pha c nhit 25,6oC v p sut 109 bar c tch ring ra x l tip theo.

    Dng kh t Slug Catcher qua V-08 tch nt phn lng cn li, lng lng tch ra ny c a n bnh tch V-03 x l, cn dng kh tch ra t V-08 s i vo V-06A/B tch tch nc.

    Do ch ny thit b Turbo Expander c a vo hot ng thay th E-20 trong ch MF, nn khong 2/3 lng kh ra khi V-06A/B c chuyn ti phn gin n ca thit b CC-01, ti kh c gin t 109 bar xung 33,5 bar v nhit cng gim xung -18oC, sau dng kh ny s c a vo thp tinh lc C-05.

    Phn kh cn li khong 1/3 dng t V-06A/B c a ti thit b trao i nhit E-14 lm lnh dng kh t 26oC xung - 35oC bi dng kh lnh t nh thp C-05 c nhit 42.5oC. p sut ca dng sau c gim t 109 bar xung 33,5 bar nh van gim p FV-1001. Sau qu trnh gin n on nhit ny, nhit gim xung n -62oC. Dng ny c a vo nh ca thp tinh lc C-05 nh mt dng hi lu ngoi nh thp.

    Trong ch GPP, thp C-05 lm vic p sut 33,5 bar, nhit nh -42.5oC v nhit y -20oC. Kh ra khi nh thp C-05 c nhit -42.5oC c s dng lm lnh kh u vo thng qua thit b trao i nhit E-14 trc khi c nn ra dng kh thng phm bng phn nn ca CC-01.

  • ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

    ti: Cng ngh ch bin kh trong nh my Dinh C Trang 23/29

    Qu trnh thu hi lng trong ch ny c khc bit so vi ch AMF v ch MF do s c mt ca thp C-04 v cc my nn K-02, K-03. Kh thot ra t nh thp C-01 c my nn K-01 nn t 29 bar ln 47 bar ri tip tc c lm lnh trong thit b trao i nhit E-08 vi tc nhn lnh l dng lng ra t V-03 c nhit l 20oC v c hai dng ny vo thp C-04 tch nc v hydrocacbon nh ln trong dng lng n t V-03.

    Thp C-04 lm vic p sut 47,5bar, nhit nh v y ln lt l 44oC v 40oC. Kh sau khi ra khi thit b C-04 c nn tip ti p sut 75 bar bng my nn K-02 ri c lm lnh bng thit b trao i nhit bng khng kh E-19. Lng kh ny c trn ln vi lng kh thot ra t V-03, c nn tip ti 109 bar bng my nn K-03, chng tip tc c lm lnh v nhp vo dng kh nguyn liu trc V-08.

    Phn lng i ra t y thp C-04 c a n a th 14 ca thp C-01 v dng lng i ra t thp C-05 c a n a th nht ca thp C-01 ng vai tr nh dng hi lu ngoi nh thp.

    Trong ch ny, thp C-01 lm vic p sut 29 bar, nhit nh 14oC v nhit y 109oC. Sn phm y ca thp C-01 c thnh phn ch yu l C3+ s c a n thp C-02 (p sut lm vic ca thp C-02 l 11 bar, nhit nh 55oC v nhit y 134oC) tch ring condeasat v Bupro.

    Sn phm nh ca thp C-02 l bupro c tin hnh ngng t hon ton nhit 43oC trong thit b ngng t bng khng kh E-02, sau c a ti bnh hi lu V-02 c dng nm ngang. Mt phn Bupro c bm tr li thp C-02 hi lu bng bm P-01A/B, p sut ca bm c th b p c s chnh p sut lm vic ca thp C-02 (11bar) v thp C-03 (16 bar). Phn bupro cn li c gia nhit n 60oC trong thit b gia nhit E-17 trc khi cp cho thp C-03 bng dng lng nng t y thp C-03. Sn phm y ca thp C-02 chnh l condensat thng phm c a ra bn cha hoc dn ra ng ng vn chuyn condensat v kho cng Th Vi.

    Nh ni trn dng nguyn liu vo thp C-03 l Bupro, ti y chng c tch ring ra. Sn phm nh thp C-03 l hi Propan c ngng t hon ton nhit 46oC nh thit b trao i nhit bng khng kh E-11 c lp ti nh C-03 v c a ti thit b cha hi lu V-05 c dng nm ngang. Phn propan lng ny c bm bng cc my bm, mt phn propan thng phm c tch ra bng thit b iu khin mc v chng c a ti ng ng dn propan hoc b cha propan V-21A. Phn cn li c a tr li thp C-03 nh mt dng hi lu ngoi nh thp.

    Ti y thp C-03, thit b trao i nhit bng du nng E-10 c lp t c tc dng nh ni ti un gia nhit cho dng butan n 97oC. Nhit ca n c iu khin bi van TV-2123 t trn ng dn du nng. Mt phn dng butan c hi lu li thp C-03, phn cn li c a ra bn cha hoc a n kho cng Th Vi sau khi c gim nhit n 60oC bng thit b trao i nhit E-17 v n 45oC bng thit b trao i nhit E-12.

  • --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- Tiu lun hc phn: Cng ngh ch bin kh GVHD: L Th Kim Huyn TH: Nhm 3 Trang 24 / 29

    V-05

    E-10

    C-03

    E-11

    P-03

    S CNG NGH CH GPP

    kh ng hnh

    V-06

    E-15

    E-18

    E-13

    E-19

    E-09

    E-12

    F-01 CC-01

    E-02

    E-01 E-03 E-04

    E-14

    V-07 K-04

    SC-01

    K-01

    K-02 K-

    03

    C-05

    C-04 C-01

    C-02

    E-08

    E-07

    nc

    V-14 V-13

    V-12

    V-15

    V-02

    E-17

    P-01

    SP codensate

    SP Butan

    SP Propan

    K hiu: C thp tch phn on. V bnh cha. SC slug catcher. E - thit b trao i nhit. CC Turbo expander. K my nn. P bm.

    Kh thng phm

    V-08

    TK-21

    V-21B

    V-21A

  • ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

    ti: Cng ngh ch bin kh trong nh my Dinh C Trang 25/29

    3.3 CH VN HNH HIN TI CA NH MY (GPP CHUYN I)

    Nh my x l kh Dinh C c thit k s dng ngun nguyn liu l kh ng

    hnh m Bch H vi lu lng u vo l 4,3 triu m3/ngy v p sut kh u vo l 109

    bar. Tuy nhin, t cui nm 2001, lng kh vn chuyn theo ng ng dn kh Bch H

    Dinh C tng t 4,3 triu m3/ngy ln 5,7 triu m3/ngy do c thm ng ng dn kh t

    m Rng ng ni vo. Nh vy, lng kh tip nhn nh my x l kh Dinh C s tng

    thm khong 1 triu m3/ngy. Vic tng lu lng kh dn vo b gy nn s st p ng

    k trn ng ng dn kh vo b v p sut ti u tip nhn kh ca nh my gim t 109

    bar xung khong t 60 80 bar. p sut kh u vo thp s lm gim kh nng ngng t

    ca cc cu t nng dn ti gim kh nng thu hi sn phm lng ca nh my, ng thi

    lm gim p sut ca dng kh kh cung cp cho nh my in.

    khc phc vn ny, nh my tin hnh lp t thm trm nn kh u vo

    nn kh u vo ln p sut 109 bar theo ng thit k ban u.

    Trm nn kh u vo ca nh my x l kh Dinh C gm 4 my nn kh K-

    1011A/B/C/D: 3 my hot v 1 my d phng to s linh ng v cng sut vn hnh v

    cng sut d phng.

    3.3.1. M t ch GPP chuyn i.

    Cc thit b ch ny gm ton b cc thit b ca ch GPP v thm trm nn kh

    u vo K-1011A/B/C/D v bnh tch V-101.

    Kh ng hnh t m Bch H vi lu lng 6 triu m3 kh/ngy i vo h thng Slug

    Catcher tch Condensat v nc trong iu kin p sut 65 80 bar nhit 25 n 300C

    tu theo nhit mi trng. Tip theo hn hp kh c chia thnh hai dng: Dng th

    nht khong 1 triu m3/ngy c a qua van gim p PV-106 gim p sut t 65-80 bar

    n p sut 54 bar v i vo thit b tch lng V-101. Lng c tch ra ti y bnh V-101

    c a vo thit b V-03 ch bin su. Kh i ra t bnh tch V-101 c a vo h

    thng ng ng dn kh thng phm 16 cung cp cho cc nh my in.

    Dng kh chnh khong 5 triu m3 kh/ngy c a vo trm nn kh u vo K-

    1011 A/B/C/D (3 my hot ng 1 my d phng) nn dng kh t 65-80 bar ln 109 bar

  • --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- Tiu lun hc phn: Cng ngh ch bin kh GVHD: L Th Kim Huyn TH: Nhm 3 Trang 26 / 29

    sau qua thit b lm ngui bng khng kh E-1011 lm ngui dng kh ra khi my

    nn n nhit khong 400C. Dng kh ny i vo thit b tch lc V-08 tch lng

    lng cn li trong kh v lc bi bn. Sau c a vo thit b hp th V-06A/B tch

    trit nc nhm trnh hin tng to thnh hydrate trong qu trnh lm lnh su.

    Dng kh ra khi thit b V-06A/B c tch thnh hai dng:

    Khong mt phn ba dng kh ban u qua thit b trao i nhit E-14 h nhit

    t 26,5oC xung - 35o C vi tc nhn lnh l dng kh kh n t nh thp C-05 vi

    nhit l - 45oC. Tip theo dng kh nng ra khi E-14 c lm lnh su bng cch gim

    p qua van FV-1001. Ap sut gim t 109 bar xung 37 bar (bng p sut lm vic ca nh

    thp C-05) ko theo nhit gim xung -620C v c a vo a trn cng ca thp tinh

    ct C-05, ng vai tr nh dng hi lu ngoi nh thp.

    Hai phn ba dng kh cn li c a vo thit b CC-01 thc hin vic gim

    p t 109 bar xung 37 bar v nhit gim xung -12oC.

    Dng kh lnh ny sau tip tc a vo y ca thp tinh ct C-05. Thp tinh ct C-

    05 hot ng p sut 37 bar, nhit nh thp v y thp tng ng l -45oC v -15oC,

    ti y kh (ch yu l metan v etan) c tch ra ti nh thp C-05. Thnh phn lng ch

    yu l Propan v cc cu t nng hn c tch ta ti y thp.

    Hn hp kh ra t nh ca thp tinh ct c nhit -45oC c s dng lm tc nhn

    lnh cho thit b trao i nhit E-14 v sau c nn ti p sut 54 bar trong phn nn

    ca thit b CC-01. Hn hp kh i ra t thit b ny l kh thng phm c a vo h

    thng ng ng 16 n cc nh my in.

    Hn hp lng i ra t y thp tinh ct c a vo nh thp C-01 nh dng hi

    lu ngoi.

    Thp C-01, hot ng p sut 27,5bar v nhit y thp l 1090C. Ti thp C-01,

    cc hydrocacbon nh nh metan, etan c tch ra t hn hp ri i ln nh thp vo bnh

    tch V-12 tch lng c trong kh, sau c my nn K-01 nn t p sut 27,5 bar ln

    p sut 47,5 bar. Hn hp kh t my nn K-01 tip tc c i vo E 08 sau vo thp

    C-04 (hin nay cc thit b ny khng hot ng do bnh tch V-03 phi gim p vn hnh

  • ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

    ti: Cng ngh ch bin kh trong nh my Dinh C Trang 27/29

    t 75 bar theo thit k xung cn 47 bar m bo ch bin c lng lng t V-101.

    Do lng lng t y bnh tch V-03 c a trc tip qua E-04A/B m khng i vo

    thit b trao i nhit E-08 nh thit k). Kh sau c nn n 75 bar nh my nn K-02

    ri li tip tc a vo thit b trao i nhit E-19 bng vic s dng dng tc nhn lnh l

    khng kh. Dng kh t E-19 c a vo my nn K-03 nn ti p sut 109 bar ri lm

    lnh trong thit b trao i nhit E-13, dng kh ny sau c a ti thit b V-08 nh l

    nguyn liu u vo.

    Thp tch etan C-01 l thit b tch dng thp loi a van, hot ng nh mt thit b

    chng ct.

    Dng lng i ra t y ca thp C-01 tip tc c a qua bnh n nh V-15 sau

    ti thp C-02.

    Ti thp C-02 vi p sut hot ng l 10,2 bar, nhit y thp c duy tr

    1350C nh Reboiler E-03, nhit nh thp 560C, bupro c tch ra nh thp, cn

    Condensat c tch ra y thp. Bupro t nh thp C-02 c a vo thit b lm lnh

    E-02, sau c a vo bnh tch V-02. Dng lng t bnh tch V-02 c bm P-

    01A/B bm hi lu 1 phn ti nh thp v phn cn li theo ng ng dn sn phm

    bupro n bn cha V-21 A/B hoc n kho cng Th Vi. Phn lng ti y thp C-02 l

    Condensat c h nhit xung 600C nh thit b trao i nhit E-04 A/B v xung 450C

    nh thit b E-09 v sau c a ti bn cha Condensat TK-21 hoc ng ng dn

    Condensat ti kho cng Th Vi.

    Condensat (sau khi tch nc ti Slug Catcher) c tch ra trong Slug Catcher

    c a vo thit b V-03 hot ng p sut 47 bar v nhit 200C tch cc cu t

    kh nh b hp th trong hn hp lng ny bng cch gin n v gim p. T thit b V-

    03, Condensat c dn ti thit b trao i nhit E-04 ( tn dng nhit nng t y

    Reboiller E-03) sau i vo a th 20 ca thp C-01.

  • --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- ------ --- --- Tiu lun hc phn: Cng ngh ch bin kh GVHD: L Th Kim Huyn TH: Nhm 3 Trang 28 / 29

    propan

    Kh ong hanh

    S cng ngh ch GPP chuyn i

    SC-01/02

    E-07 V-03

    V-08

    K-1011A/B/C/D

    E-1015A/B/C/D

    V-101

    V-06A/B

    E-14

    C-05

    CC-01

    C-01

    E-01A/B

    V-15

    E-04

    E-09

    Kh

    thng

    phm

    SP Condensate

    V-12

    K-01 K-03

    C-02 P-01A/B E-17

    E-02

    V-02

    E-03

    C-03

    E-10

    E-11

    V-05

    P-03A/B

    E-12

    K hiu: C thp tch phn on. V bnh cha. SC slug catcher. E - thit b trao i nhit. CC TurboExpander. K my nn. P bm.

    K-02

    V-21A

    V-21B

    TK-21

  • ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

    ti: Cng ngh ch bin kh trong nh my Dinh C Trang 29/29

    KT LUN Trong qu trnh lm tiu lun v cng ngh ch bin kh trong nh my Dinh C,

    chng ti phn no lm r v cng ngh ch bin kh ca nh my x l kh Dinh

    C.

    Cng trong qu trnh lm tiu lun. Chng ti phn no hiu c nguyn l

    vn hnh ca nh my. Nhn thy rng vai tr ca nh my x l kh Dinh C, tm

    quan trng ca vic pht trin nng lng kh ni ring.

    V khng c thc t nh my, cho nn nhng hiu bit, tm hiu v nh my

    khng th nm bt bit c. Tuy nhin, qua bi tiu lun ny, gip nhm chng ti

    hiu bit c quy trnh, v nh my nhiu hn. Gip chng ti cng cng c thm

    c vn kin thc ca mnh.

    Cui cng chng ti xin cm n c L Th Kim Huyn gip chng ti hon

    thanh bi tiu lun ny.