bÁo cÁo thỰc tẬp dinh cỐ 2013

7/27/2019 BO CO THC TP DINH C 2013

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Bo co Thc tp Chuyn ngnh GVHD: TS. L Thanh Thanh

SVTH : NHM 1 1

CHNG I: TNG QUAN V NH MY XL KH DINH C (GPP)

I.1. S LC V NH MY XL KH DINH CI.1.1. Gii thiu v nh my

Nh my x l kh Dinh Cc xy dng ti X An Ngi, Huyn Long

in, Tnh B Ra-Vng Tu. Nh my GPP cch tnh l 44 khong 700 m (B

Ra - Long Hi) v cch Long Hi 6 km v pha bc. y l nh my c xy

dng vi quy m to ln vi din tch 89,600 m2 (di 320 m, rng 280 m).

Thng 10 nm 1998, nh my x l kh Dinh C bt u hot ng, vi mc

ch x l v ch bin kh ng hnh c cng sut khong 1,5 tm3 kh/nm

(khong 4,3 triu m3 kh/ngy). Nguyn liu ca nh my l kh ng hnh t

m Bch Hngoi khi b bin Vng Tu, c vn chuyn qua ng ng

16(16 inch) ti Long Hi vi p sut kh ti nh my l 109barG. Sau khi x

l th sn phm ca nh my l LPG v Condensate (Nh my c th tch ring

sn phm Propane v Butane cho khch hng), lng kh cn li lm nguyn

liu cho nh my in, m B Ra v Ph M.

Tnm 2002, nh my tip nhn thm lng kh t m Rng ng tng

cng sut ln 5,7 triu m3 kh/ngy, p sut u vo b st gim xung cn

70barG, nn nh my t thm trm my nn u vo nng p ln

109barG nh thit k.

Nm 2003, nh my lp t thm cm my bm cng sut ln bn cnh h

thng bm condensate c, nhm vn chuyn ton b lng Condensate t nh

my xl kh Nam Cn Sn ti kho cng Th Vi.

I.1.2. Nguyn l vn hnh

Ngun kh m ca nh my t m Bch H v Rng ng ph thuc vo

vic khai thc du th, do c s chnh lch gia nhu cu tiu th kh kh v

lng kh m cung cp. V vy, vic vn hnh nh my tun th mt s th t

u tin sau:


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SVTH : NHM 1 2

* u tin cao nht l p ng nhu cu tiu th kh ca cc nh my in,

m. Nu lng kh tiu thcao hn lng kh cung cp th u tin vic cung

cp kh hn thu hi phn lng.* u tin thu hi ti a sn phm lng.

* u tin tip nhn ton blng kh m tngoi khi cp vo. Nu lng

kh tiu th thp hn lng kh cung cp, lng kh d sau khi x l sc t

b.

I.1.3. Ngun cung cp

Kh m cung cp cho nh my t 2 ngun Bch H v Rng ng ph thuc

vo khai thc du th. Do s chnh lch gia nhu cu tiu th kh kh v kh

nng cung cp kh m. V l vic vn hnh nh my tun th mt s th tu

tin sau:

u tin cao nht ca nh my l tip nhn ton blng kh m cp vo t

ngoi khi. Khi nhu cu tiu th kh nhhn lng kh thu gom c ngoi

khi th nh my vn tip nhn ti a, lng kh d sau khi c x l thu

gom phn lng sc t b.

u tin tip theo l p ng nhu cu thiu th kh ca cc nh my in:

Trong trng hp nhu cu tiu thkh kh cao hn lng kh cung cp t

ngoi khi, vic cung cp kh c u tin hn vic thu hi sn phm lng.

Tng cng thu hi sn phm lng LPG.

I.2. CC THIT B TRONG NH MY

K hiu tn thit b v chc nng ca tng thit b.

STTTn

thit bChc nng

1

Slug

Catcher

(SC)

Tch th nguyn liu u vo.

2 V-02 Bnh thu hi sn phm nh thp C-02.


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SVTH : NHM 1 3

3 V-03 Tch cc hydrcacbon nh hp th trong dng lng.

4 V-05 Bnh thu hi sn phm nh thp C-03.

5 V-06A/B

Hp phhi nc bo ho tn ti trong dng kh (Haithp hp ph v gii hp hot ng lun phin).

6 V-07Thit b tch lng trc khi i ra thnh kh thng

phm.

7 V-08Tch cc hydrocacbon lng cn li do SC tch khng

ht.

8 V-12 Bnh tch lng c trong sn phm nh thp C-01.9 V-13 Bnh tch lng trc khi qua my nn K-02.

10 V-14 Bnh tch lng trc khi qua my nn K-03.

11 V-15 Bnh tch kh ln trong sn phm y ca thp C-01.

12V-21

A/B

Bn cha Propane / Butane thng phm.

13 V-101 Bnh tch lng.

14 C-01 Thp tch Etane.

15 C-02 Thp thu hi Bupro.

16 C-03 Thp tch C3 v C4.

17 C-04 Tch nc v cc hydrocacbon nh ln trong dng lng.

18 C-05Tch phn lng ngng t do s gim p t 109 bar

xung 47 bar.

19 CC-01Gin nkh t 109 bar33,5 bar v nn kh sn phm

ln 47 bar trc khi xut ra (Turbo Expander).

20 P-01 Bm dng hi lu v thp C-02.

21 P-03 Bm dng hi lu v thp C-03.

22PV-

106

Van gim p xung 54 bar.

23 K-01 My nn kh t 29 bar47 bar.


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SVTH : NHM 1 4



26 K-04 My nn dng kh hi lu t C-05 v V-06 A/B.27 K-1011 My nn dng kh u vo qua SC ln 109 bar.

28 EJ-01 B ho dng v n nh p sut cho thp C-01.

29 E-01 Thit b gia nhit cho thp C-01.

30 E-02H thng qut mt bng khng kh cho sn phm nh

i ra t thp C-02.

31 E-03 Thit b gia nhit n 135

o

C cho thp C-02.

32 E-04Thit b trao i nhit ca dng lng ra ty thp C-

02.

33 E-07 Thit b gia nhit n 20oC cho V-03.

34 E-08 Thit btrao i nhit.

35 E-09Thit b lm lnh bng khng kh cho dng lng i ra t

thp C-02.

36 E-10 Thit b cp nhit bng du nng n 97oC cho C-03.

37 E-11H thng qut mt bng khng kh cho sn phm nh

i ra t thp C-03.

38 E-12 H thng gim nhit n 45oC.

39 E-13 H thng qut mt bng khng kh.

40 E-14 Thit b lm lnh.


42 E-17 H thng gim nhit n 60oC.

43 E-18 Thit btrao i nhit.


45 E-20 Thit b lm lnh.


47 FV-


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SVTH : NHM 1 5

1001 Van tit lu.

Van tit lu.

48FV-

1201

49FV-

1301

50FV-

1701

51FV-

1802

52 F-01Thit b lc bi bn c th sinh ra sau khi qua

V-06 A/B.

53 ME-21

Thit bo lng v mt s thng s khc.54 ME-24

55 ME-25

56 ME-26

57 TK-21 Bn cha Condensate thngphm.

58P-21

A/B

Bm xut LPG.

59P-23

A/B

Bm vn chuyn Condensate.

I.3. CC CH VN HNH

I.3.1. Cc ch vn hnh

Ch AMF (Ablolute Minium Facility): Cm thit b ti thiu tuyt i. Ch MF ( Minium Facility): Cm thit b ti thiu. Ch GPP (Gas Processing Plant): Cm thit b hon thin. Ch MGPP ( Modified Gas Processing Plant): Ch GPP sa i


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SVTH : NHM 1 6

Khi bt u xy dng nh my, do i hi cao v tin trong khi 1 s thit

b khng kp p ng, vic xy dng v a nh my vo hot ng c chia

lm 4 giai on: AMF, MF, GPP va MGPPGiai on AMF bao gm 2 thp chng ct, 3 thit b trao i nhit, 3 bnh

tch thu hi khong 340 tn Condensate/ngy tlu lng kh m khong 4,3

triu m3/ngy. Giai on ny khng c my nn no c s dng.

Giai on tip theo l MF bao gm cc thit b trong AMF v b sung thm 1

thp chng ct, 1 my nn piton chy kh 800kw, 3 thit btrao i nhit v 3

bnh tch thu hi hn hp BUPRO ( butan v propane ) khong 630 tn/ngy

v Condensate khong 380 tn/ngy.

Giai on GPP l vi y cc thit b nh thit k thu hi 540 tn

propane/ ngy, 415 tn butan/ngy v 400 tn Condensate/ngy. Gpp bao gm

cc thit b ca MF b sung thm 1 turbo-expander 2200 kW, my nn piton 2

cp chy kh 1200 kW, 2 thp chng ct, cc thit btrao i nhit, qut lm mt

v cc thit b khc.

Giai on cui cng l MGPP. ch GPP chuyn i. Ch MGPP c b

sung thm trm my nn kh u vo ca nh my, nhm gii quyt vic gim

p do tng lu lng kh ng hnh tip nhn t m Rng ng. Lng sn

phm ca nh my cng tng ln, kh kh khong 4,8-5,2 triu sm3/ngy, LPG

khong 1000-1100 tn/ngy, condensate l 350 tn/ngy.

Hin nay, nh my vn hnh theo ch GPP chuyn i, ch chuyn sang

ch MF hoc AMF khi xy ra s c hoc bo dng sa cha thit b.

I.3.2. M t cng ngh cc ch vn hnh chnh ca nh my

I.3.2.1. Slug Catcher

Hn hp kh v Condensate t ngoi mvo, c a n Slug- Catcher

(SC-01/02) phn tch Condensate v nc tkh, di p sut 65-109bar (tu

theo lu lng) v nhit 20-300C (tu theo nhit mi trng) . H thng

Slug Catcher bao gm hai dy ng, mi dy c dung tch 1400m3. Kh phn tch


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SVTH : NHM 1 7

c gp li ti u gp 30 v a n cc thit bch cng ngh tip

theo.

Nc c a ra t thit bSlug Catcher c iu chnh bi thit bomc LIC0112 & 0122 dn vo bnh tch nc V-52 ( nc c gim p n

p sut kh quyn v hydrocacbon b hp th sc gii phng, ri a ra h

thng uc), nc sc a n Burnpit (ME-52) t.

ch hot ng bnh thng, c 2 h thng SC su hot ng t

c cng sut cao nht. Trong trng hp cn bo dng, sa cha mt h

thng, th h thng cn li c c lp hot ng nhcc cp van tay trn

ng kh vo v ra ca Slug Catcher.

I.3.2.2. Ch hot ng AMF

I.3.2.2.1. Thit b hot ng

Ch AMF theo thit k l ch vn hnh nh my ban u vi cc thit

b ti thiu, nhm cung cp kh cho cc h tiu th v khng ch trng vo thu

hi sn phm lng. Gm: Slug catcher, bnh tch 3 pha V -03, bnh tch lc V-

08, thit b ha dng v n nh p sut Ejector ( EJ-01A/B/C ), thp tch tinh

C-05, thp tch C-01, 1 thit btrao i nhit E-04, thit b trao i nhit bng

khng kh E-09, bnh tch V-15 v mt s thit b khc.


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SVTH : NHM 1 8

I.3.2.2.2. M t cng ngh


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SVTH : NHM 1 9

Kh ng hnh m Bch H vi lu lng kh m khong 4,3 triu m3/ngy

c a ti Slug Catcher ca nh my bng ng ng 16 vi p sut 109

bar, nhit 25,6

0

C. Ti y, Condensate v kh c tch ra theo cc ngng ring bit tip tc xl, nc c trong Condensate c tch nhtrng

lc v a vo bnhtch nc (V- 52) x l. Ti y, nc c lm gim

ti p sut kh quyn v hydrocacbon b hp th sc gii phng a ra t

h thng uc, nc sau c a ti hm t (ME- 52).

Kh ng hnh m Bch H vi lu lng kh m khong 4,3 triu m3/ngy

c a ti Slug Catcher ca nh my bng ng ng 16 vi p sut 109

bar, nhit 25,6 0C. Ti y, Condensate v kh c tch ra theo cc ng

ng ring bit tip tc xl, nc c trong Condensate c tch nhtrng

lc v a vo bnh tch nc (V- 52) x l. Ti y, nc c lm gim

ti p sut kh quyn v hydrocacbon b hp th sc gii phng a ra t

h thng uc, nc sau c a ti hm t (ME- 52).

Kh tu ra ca V-08 c a vo thit b ha dng EJ-01 A/B/C gim

p sut t 109 bar xung 47 bar. Vic gim p ny c tc dng ht kh tnh

thp C-01. Dng ra l dng 2 pha c p sut 47 bar v nhit 200C cng vi

dng kh t V-03 ( gim p) c a vo thp C-05. Nhim v ca EJ-01

A/B/C l gi p sut lm vic ca thp C-01 n nh. Thp C-05 hot ng p

sut 47 bar v nhit 200C. ch AMF phn nh ca thp hot ng nh

bnh tch kh lng thng thng. 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-01 A/B/C. Dng kh

i ra tnh 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 th 1 ca thp C-01. Ch

AMF thp C-01 c hai dng nhp liu:

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

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

p sut hi ca condensate gim i v c iu chnh trong thp C-01nhm mc ch: ph hp cho cng vic cha trong bn cha ngoi tri. Vi


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SVTH : NHM 1 10

ngha , trong ch AMF thp C-01 hot ng nh l thp n nh

Condensate. Trong , phn ln hydrocacbon nhhn Butan c tch ra khi

Condensate nh thit b gia nhit E-04A/B n 194

0

C. Kh ra nh thp cnhit 640C c trn vi kh nguyn liu nh EJ-01 A/B/C. Dng

Condensate 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

Condensate v kho cng hoc cha bn cha TK-21.

I.3.2.2.3. Qu trnh xl condensate

p sut ca bnh tch 3 pha V-03 c iu chnh 75 barG bng van iu

p PV-1209, c lp t trn ng ng dn kh V-03 ti u ca thp C-05

(Rectifier). Nhit u ra van iu p PV-1209 l khong 3oC, thp hn nhit

to thnh hydrate (16,5oC) nn c khnng hydrate sc to thnh khi i

qua van iu p. Tuy nhin, n s b t tan do thp C-05 (Rectifier) trong ch

hot ng ny c nhit vn hnh ln hn 20oC.

Condensate t V-03 c chuyn n thp tch ethane C-01 (Deethanizer),

sau khi c gia nhit t 20oC n 101oC trong thit btrao i nhit E-04A/B

(condensate Coss Exchanger) vi mt dng nng 194oC i t thp tch ethane

C-01. Mc ch chnh ca thit btrao i nhit ny l tn dng v thu hi nhit

t dng nng, trnh hin tng to hydrate u ra ca FV-1701 (trong qu

trnh gim p t p sut vn hnh ca V-03 xung 20 barG) bng cch duy tr

nhit hot ng 72oC, cao hn nhit to thnh hydrate (11,6oC) trong

iu kin ny.

I.3.2.2.4. H thng Ejector

i vi qu trnh x l kh t Slug Catcher trong ch hot ng AMF, cc

thp hp ph loi nc V-06A/B (Dehyration Adsorber) s khng vn hnh.

Kh t SC sc a ti h thng Ejector EJ-01A/B/C (Jet Compressor). Qua

thit b ny p sut gim t p sut vn hnh ca SC xung 45 BarA. Mc ch

ca h thng Ejector l nn kh i ra tnh thp tch ethane C-01 t 20 BarAn 45 BarA, v vy p sut ca thp tch C-01 c gi20 BarA.


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SVTH : NHM 1 11

H thng Ejector bao gm 03 Ejector, cng sut ca mi Ejector ln lt l

50%, 30% v 20% lu lng dng i qua Ejector.

Van iu p (PV-0805) trn ng Ejector bypass c cng sut khong 30%tng th tch dng ra, c thiu chnh p sut ca thp tch ethane C-01 20

BarA bng cch cho bypass 1 phn dng kh qua Ejector khi cng sut ca h

thng Ejector duy tr p sut C-01. Khi cng sut ca h thng Ejector nh

hn cn thit, lng kh d t thp tch ethane sc x ra h thng uc qua

van iu p (PV-1303B). V vy, h thng tch ethane c bo v khng c

hin tng qu p.

I.3.2.2.5. Thp tch C-05 Rectifier

Dng kh t h thng Ejector v dng kh t bnh tch V-03 c chuyn n

a th nht ca thp C-05 (Rectifier), tch lng ra khi kh nhit 20,7oC

v p sut 45 barA c iu chnh bi thit biu chnh p sut (PIC- 1114A)

lp t trn ng ng dn kh thng phm. Phn nh ca thp C-05 lc ny

c tc dng nh mt bnh tch lng hi (Gas-Liquid Seperator).

Trong ch hot ng AMF, Turbo-Expander (CC-01) v thit btrao i

nhit kh lnh/kh (E-14) khng c a vo hot ng. Do vy, dng kh t

nh thp tch C-05 c chuyn n ng ng dn kh thng phm thng

qua van PV-1114A c lp t trn ng ng, iu chnh p sut u ra

ca nh my khong 45 barA.

Dng lng ty thp C-05 c iu khin thng qua thit biu chnh

dng (FIC-1201) cng vi thit biu chnh mc cht lng (LIC-1201A), a

vo a u tin ca thp tch Ethane (C-01).

I.3.2.2.6. Thp tch Ethane

Trong chng hot ng AMF, thp tch ethane (C-01, Deethanizer) c hai

dng nguyn liu u vo, l dng lng i ra t bnh tch V-03 v dng lng

i ra ty thp tch tinh C-05 (Rectifier). Dng lng i ra t thp tch tinh C-

05 c a vo a u tin ca thp tch ethane C-01 bao gm 80% phn molcht lng v ng vai tr nh dng hi lu ngoi cho qu trnh chng ct. Dng


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SVTH : NHM 1 12

lng i t bnh tch V-03 c a vo a th 14 ca thp tch ethane C-01,

(i vi ch hot ng MF v GPP th a vo a th 20).

p sut hi ca condensate c iu chnh trong thp C-01 xung thp hnp sut kh quyn lu tr trong cc bn cha thng thng. Trong trng hp

ny, thp tch ethane c tc dng nh mt thp n nh condesate, ti thp ny

hu ht cc hydrocacbon nhhn butan c tch ra khi Condesate thng qua

vic cung cp nhit cho cc reboiler E-01A/B ln ti 194oC. Dng kh i ra t

nh c nhit l 64oC c trn vi dng kh thng phm bng h thng

Ejector.

I.3.2.2.7. Thit b chnh p sut kh

Trong ch hot ng AMF, ti u vo ca nh my khng lp t thit b

iu chnh dng hoc p sut tng. p sut ti u ra nh my c iu

chnh bng van iu p (PV-1114A) lp t ti u ra ca nh my trong trng

hp lng kh tiu th ln hn lng kh cung cp. Khi lng kh tiu th nh

hn lng kh cung cp, th mt lng kh sc em t qua van iu p

(PV-1114B). V vy, trong chai trng hp trn p sut u ra ca nh my

c duy tr n nh.

Thng thng kh u vo nh my c p sut 109 barA c a vo h

thng Ejector, p sut u ra khi h thng Ejector vo khong 45 BarA, bng

p sut u ra ca nh my. Khi p sut kh u vo nh my thp hn 109

BarA, hoc kh cung cp tgin khoan t hn so vi cng sut ca nh my th

h thng Ejector c th khng hot ng ht cng sut, v vy p sut ca thp

tch ethane c th trnn cao hn 20 BarA. Trong trng hp ny, mt trong ba

Ejector ca h thng Ejector c cng sut ph hp nht sc la chn, sau

p sut u vo nh my t ttng ln v t gn 109 BarA v ng thi p sut

ca thp tch ethane cng c iu chnh 20 BarA. Nu trong s la chn

trn, h thng Ejector vn khng th hot ng ht cng sut, th mt lng kh

d c th tng c a ra t qua van iu p (PV-1303B), c lp t


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SVTH : NHM 1 13

trn ng dn ng kh i ra t thp tch ethane. Sau qu trnh x l trn, kh

thng phm v condensate l hai sn phm chnh ca nh my.

I.3.2.3. Ch hot ng MFI.3.2.3.1. Thit b

y l ch hot ng trung gian ca nh my bao gm cc thit b ca ch

AMF (tr EJ-01A/B/C) v c b sung 1 s thit b sau:

- Thp n nh condensate: C-02.

- Cc thit btrao i nhit: E-14, E-20

- Thit b hp ph: V-06A/B

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


Dng kh t SlugCatcher c a ti bnh tch lc V-08 tch nc,

hydrocacbon lng, du v lc cc ht rn, nhm bo v V-06A/B khi b h

hng hoc lm gim hot tnh cng nh tui th.

Sau khi c loi nc v cc hydrocacbon lng, dng kh ra t V-06A/B s

c lm lnh qua E-14,v E-20, v sau c tip tc a vo thp C-05

tch lng. Kh ra tnh thp C-05 c s dng nh tc nhn lnh bc mt cho

dng nguyn liu ti E-14 (nhit gim xung -17oC) v c lm lnh bc

hai ti van FV-1001 trc khi cung cp cho cc nh my in.

Hai thp hp ph 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 nhs cung cp nhit ca

dng kh thng phm nng nhit ln 220oC, dng ra khi thit b V-06A/B

c lm ngui ti E-15 v tch lng V-07 trc khi ra ng kh thng

phm.

Dng lng tSlug Catcher n V-03, sau khi ra khi V-03 sc gia nhit

ti E-04A/B (t 20oC n 80oC) nhdng lng ty thp C-02 dn n thp

C-01. Thp C-01 c 3 dng nguyn liu c a vo:

- Dng kh 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.


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SVTH : NHM 1 14

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

Ti y C1,C2c thu c nh thp, sau c nn ln 47 bar nhK-

01 trc khi a vo ng ng dn kh thng phm.Phn lng ty C-01 a n C-02 ( 11 bar, tonh 60

oC, toy 154oC ), ti y

C5+ s thu c y thp v dn vo thit b trao i nhit E-04A/B gia

nhit cho dng nguyn liu vo thp. Sau khi ra khi E-04A/B, dng lng s

c lm lnh bng E-09 trc khi ra ng ng hoc vo bn cha Condensate

thng phm TK-21.

Dng hi ra khi C-02 l LPG, c ngng t ti V-02, mt phn hi lu tr

li C-02 m bo hot ng ca thp, phn cn li theo ng ng dn sn

phm LPG.


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SVTH : NHM 1 15


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SVTH : NHM 1 16

I.3.2.3.3. Qu trnh lm kh v ti sinh cht hp ph

Trong ch hot ng ny, u tin dng kh tSlug Catcher c chuyn

n thp loi nc v cc hydrocacbon lng ti V-08, sau c a vo mttrong hai thp hp ph loi nc hot ng song song V-06A/B, tch nc c

trong kh v cui cng, kh c loi nc i qua h thng lc F-01A/B.


Vic x l Condensate trong ch hot ng MF cng tng tnh trong

ch hot ng AMF, c mt s khc nhau gia hai ch hot ng l trong

ch hot ng MF dng kh tbnh tch 3 pha c chuyn n thp tch

ethane C-01, cn trong ch hot ng AMF th dng kh ny c chuyn

n thp tch tinh C-05.

p sut ca bnh tch 3 pha c iu chnh 75 barA bng van iu p

(PV-1305A/B) c lp t trn ng ng dn kh ca n v trc u vo

thp tch ethane a th 2 hoc th 3, nhit u ra van iu p l -7,9oC,

thp hn nhit to thnh hydrate (13,4oC). V vy, hai van (PV-1305A/B)

c lp t, trong mt van d phng.

Mc ch ca vic chuyn dng kh t bnh tch V-03 n thp C-01 l v

dng kh ny c thc nc. V vy, kh thu c trong ch hot ng MF

cng cha nc nu chuyn dng kh n thp tch C-05. Khi a kh t V-03

ti C-01 th kh sc hi lu li u vo nh my v nc sc x l

y.

Condensate tbnh tch nhanh c chuyn n thp tch ethane C-01, sau

khi c gia nhit t 20oC ln 80oC trong thit b trao i nhit E-04A/B vi

dng nng 155oC i ra ty thp C-02. Mc ch chnh ca thit b trao i

nhit dng l tn dng, thu hi v gia nhit cho dng lnh trnh hin tng to

hydrate u ra ca FV-1701. Khi p sut hot ng gim t 75 barA xung 29

barA, nhit hot ng c th duy tr 61oC (cao hn nhit to thnh

hydrate 14oC) trong iu kin ny.


17/35


SVTH : NHM 1 17

I.3.2.3.5. Lm lnh kh v tch tinh

Khong mt na lng kh c tch nc c chuyn n thit b trao

i nhit kh lnh/kh E-14 (Cold Gas/Gas Exchanger) lm lnh t 26

o

Cxung -17oC bng dng kh lnh -18oC i tnh thp tch tinh C-05 (Rectifier),

nhit u ra l -17oC ny l mt thng s quan trng trong qu trnh x l

kh, nu n ln hn gi tr -17oC th khng thu hi c cht lng, v nu thp

hn gi tr -17oC th hydrate c thc hnh thnh ti dng ra. V vy, nhit

ny phi c iu chnh bng dng lnh ca thit btrao i nhit kh lnh/kh

E-14 thng qua thit biu chnh nhit TIC-1006, TICA-1009 (Temperature

controller) c lp t trn u ra ca ng ng dn dng lnh, trnh hin

tng nhit thp hn gi tr cho php (-10oC) bng cch gii hn dng bypass

bi thit biu chnh TY-1006 (Low Slector).

p sut ca dng kh nguyn liu c gim t 109 barA xung 47,5 barA

thng qua van iu p FV-1001. Ti van ny kh c gin non nhit, nhit

ca kh gim xung n -35oC.

Mt na lng kh cn li c lm lnh xung 19oC trong thit btrao i

nhit kh/lng lnh (E-20, Gas/cold Liquid Exchanger) bng dng Condensate

lnh -26,8oC i ty thp tch tinh (C-05, Rectifier). V p sut ca n cng

c gim t 109 barA xung 47,5 barA thng qua van FV-0501C. Sau hai

dng ny c ha trn vi nhau v c a vo a th nht ca thp tch

tinh (C-05, Rectifier). Trong thp tch tinh (C-05, Rectifier) mt lng kh cha

ch yu methane, ethane c tch ra khi Condensate p sut l 47,5 barA,

v nhit hot ng l -18,5oC, nhit v p sut lm vic c iu chnh

bng van (PIC-1114) c lp t trn ng ng dn kh thng phm. Phn

trn ca thp tch tinh (C-05, Rectifier) c tc dng nh mt bnh tch lng-kh.

Dng kh t thp tch tinh (C-05, Rectifier) c nhit -18,50C c dng

lm lnh dng kh nguyn liu i vo trong thit b trao i nhit kh lnh/kh

(E-14, Cold Gas/Gas Exchanger). Trong ch hot ng MF, h thnggin/nn kh (CC-01, Turbo-Expander/Compressor) khng hot ng. V vy,


18/35


SVTH : NHM 1 18

n c bqua v kh c chuyn n ng ng dn kh thng phm. Van

iu p (PV-1114A) c lp t trn ng ng iu chnh p sut u ra ca

nh my l khong 47 BarA.Cht lng ty thp tch tinh (C-05, Rectifier) thng qua thit biu chnh

dng FIC-1201 cng vi thit biu chnh mc LIC-1201A c a vo thit

btrao i nhit kh/lng lnh E-20, c nhit khong -26,8oC c dng

lm lnh dng kh u vo thp C-05 v p sut ca kh u vo cng c gim

xung 47,5 BarA qua van FV-0501C, sau dng ny c chuyn n a trn

cng ca thp tch ethane (C-01, Deethanizer).

I.3.2.3.6. Thp tch ethane

Trong ch hot ng MF, thp tch ethane (C-01, Deethanizer) c 3 dng

u vo, dng th nht l dng kh t bnh tch V-03 c a vo a th 2

hoc th 3, dng th hai l dng lng cng t bnh tch V-03 c a vo a

th 20 (nu trong ch hot ng AMF th avo a th 14), dng th 3 l

dng lng ty thp tch tinh (C-05, Rectifier) sau khi i qua thit btrao i

nhit E-20, dng ny bao gm 75% mole l lng v ng vai tr dng hi lu

ngoi cho qu trnh chng ct.

Trong thp tch ethane cc hydrocacbon nhnh methane, ethane c tch

ra khi dng kh lng v i ln nh thp. Nhit y thp C-01 c gi

120oC thng qua cc reboiler (E-01A/B). Hydrocacbon nhc tch ra, c

nn t 29 BarA ln 47 BarA bng my nn (K-01, Deethanizer OVHD

Compressor) v c trn vi kh thng phm. K-01 l my nn kiu pittng

n cp c dn ng bng ng c kh 766 KW, c thit b tch lng u vo

ti V-12. V-12 l bnh tch thng ng c ng knh 1.200 mm, cao 3.000 mm

c lp t trc my nn loi b tt c cc git lng cn li trong dng kh.

Cht lng y ca bnh tch u vo c x vo h thng x kn thng qua

thit biu chnh mc LICA-1401.

Cht lng ty thp ethane c chuyn n thp n nh (C-02, Stabilier) thu hi Bupro (sn phm nh) v Condensate (sn phm y).


19/35


SVTH : NHM 1 19

p sut hot ng ca thp tch ethane c iu chnh 29 BarA bi b

iu p PICA-1305. Trong trng hp, my nn kh K-01 khng lm vic, th

dng kh t thp C-01 sc a ra flare tng thng qua van PV-1303, duy tr p sut vn hnh ca thp.

I.3.2.3.7. iu chnh p sut dng kh

Trong ch hot ng MF, chiu chnh tng lu lng v p sut

ca dng kh vo nh my c ci t. Cc biu chnh p sut v iu chnh

dng PICA-0502A v FIC-0501 c lp t trn ng ng dn kh sau thp

hp ph V-06A/B v tn hiu iu chnh t 2 thit bny c la chn bng

thit b PY-0502 v sau c chuyn n van iu khin FV-0501C.

Nu dng kh cung cp tngoi khi khng , p sut u vo c gim

xung 109 BarA th PICA-0502A ng van FV-0501C duy tr p sut u

vo 109 BarA. Nu p sut vt qu 109 barA, PICA-0502B s mvan PV-

0502 gii phng kh d ra uc t ,v nh vy cc thit bc bo v khi

s qu p.

Trong trng hp ny, p sut u vo khng thiu chnh chnh xc do th

tch ca h thng ng ng di bin qu ln v gi tr ca thit biu chnh

c th b sai lch.

Lu lng dng kh i qua thit btrao i nhit kh lnh/kh E-14 c iu

chnh 45% tng dng kh qua nh my.

Trong trng hp, nhu cu tiu th kh ca cc h tiu th ln hn lng kh

cung cp, p sut ti u ra ca nh my c iu chnh 47 BarA bng van

iu p PV-1114A, c lp t ti u ra ca nh my. Nu nhu cu tiu th

thp hn lng cung cp, th lng kh d sc dn ra uc t thng qua

PV-1114B. V vy, trong c2 trng hp p sut u ra ca nh my u c

duy tr.


20/35


SVTH : NHM 1 20

I.3.2.4. Ch hot ng GPP

I.3.2.4.1. Cc thit b b sung

y l ch hon thin ca nh my. Khi hot ng ch ny th hiusut thu hi sn phm cao hn so vi cc chtrc.

Ch ny bao gm cc thit b ca chMF v c b sung mt s thit

b khc:

- Thp Stripper: C-04

- Thp tch C3/C4 : C-03

- Hai my nn: K-02, K-03

- Turbo-Expander: CC-01

- Thit btrao i nhit: E-17,E-11.....


Kh ngoi gin vo nh my c tip nhn u tin ti Slug Catcher

(25,6oC, 109bar) c a n V-03.

Dng kh ra t Slug Catcher qua V-08 tch nt phn lng cn li, dng

lng c a n V-03 xl, cn dng kh th c a n V-06 A/B

tch tinh nc.

Thit b CC-01 c a vo hot ng thay th cho E-20 ch MF.

Khong 2/3 lng kh ra khi V-06A/B c chuyn ti phn gin nca thit

b CC-01 ( xung 33,5bar, -18oC ), ri c dn vo thp tinh lc C-05.

Khong 1/3 dng kh cn li t V-06A/B c a ti thit btrao i nhit

E-14 lm lnh xung -35oC nhdng lnh tnh C-05 (-42,5oC). Sau

a vo van gim p FV-1001 (xung 47,5 bar, -62oC), ri a vo thp C-05

(33,5 bar, tnh-42oC, ty -20

oC) nh mt dng hi lu ngoi nh thp.

Kh ra khi C-05 c lm lnh bng E-14 trc khi nn ra dng kh thng

phm bng phn nn ca CC-01.

Dng kh ra tnh thp C-01 c my nn K-01 nn t 29 bar ln 47 bar,

ri tip tc c lm lnh trong thit btrao i nhit E-08, sau vo thp C-04 tch nc v hydrocacbon nh ln trong dng lng n t V-03. Kh sau


21/35


SVTH : NHM 1 21

khi ra khi thit b C-04 c nn tip ti p sut 75 bar nhmy nn K-02, ri

c lm lnh ti thit btrao i nhit bng khng kh E-19. Dng ny trn ln

vi dng kh t V-03 v c nn ti 109 bar bng my nn K-03, sau lic lm lnh E-13 v nhp vo dng kh nguyn liu trc khi vo V-08.

Dng lng ra t thp C-04 c a ln a th 14 hoc th 20 ca thp C-

01, dng lng 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.

Thp C-01 lm vic p sut 29 bar, nhit nh v y ln lt l 14oC v

109oC. Sn phm y ca thp C-01 ch yu l C3+c a n thp C-02 (11

bar, nhit nh l 55oC, nhit y l 134oC) tch bupro v condensate.

Dng kh ra tnh thp C-02 l hn hp Bupro c tin hnh ngng t

hon ton nhit 43oC qua h thng qut lm mt khng kh E-02, sau

c a ti bnh hi lu V-02 dng nm ngang. Mt phn Bupro c bm tr

li C-02 hi lu bng bm P-01A/B, p sut ca bm c thb p 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 cung cp cho

thp C-03 bng cht lng nng ty thp C-03. Sn phm y ca thp C-02

chnh l condensate thng phm c a ra bn cha hoc dn v kho cng

Th Vi.

Sn phm ra tnh thp C-03 l hi propane c ngng t hon ton

46oC qua thit b lm mt bng khng kh E-11 v ri c a ti thit b cha

hi lu V-05, mt phn propane thng phm tch ra bng thit biu khin

mc, v chng c a ti ng ng dn Propane hoc b cha V-21A. Phn

cn li c a trli nh thp C-03 nh mt dng hi lu ngoi nh thp.

Ti thp C-03, thit btrao i nhit E-10 c lp t cp nhit un si li

bng du nng ti nhit 97oC. Nhit ca n c iu khin bi van TV-

2123 t trn ng dn du nng. Butane cn li a ra bn cha hoc a n

kho cng Th Vi sau khi c gim nhit n 60oC bng thit b trao inhit E-17 v n 45oC nhthit btrao i nhit E-12.


22/35


SVTH : NHM 1 22


23/35


SVTH : NHM 1 23

I.3.2.4.3. Loi nc v ti sinh

Trong ch hot ng ny, dng kh tSlug Catcher c chuyn n bnh

tch V-08, v sau c a vo mt trong hai thp hp ph song song (V-06A/B) loi bnc cha trong kh. Sau cho qua h thng li lc F-01A/B

loi b cc bi bn, tp cht c hc b cun theo, ri a vo h thng kh x

l kh tng tnh trong ch MF.


Qu trnh x l dng Condensate trong ch hot ng GPP khc so vi

ch hot ng MF v AMF bi v trong ch hot ng GPP c thm hai

thit b l Stripper v my nn kh K-02/03. Dng lng v kh t bnh tch 3 pha

c chuyn ln lt n hai thit b ny.

p sut ca bnh tch V-03 c iu chnh 75 BarA bng van PV-2002

lp t trn ng hi lu ca my nn hi lu cp 2 (K-03).

Condensate t bnh tch V-03 thng qua thit biu chnh dng FV-1802

c lin kt vi thit biu chnh mc LIC-0302 (cascaded control) i vo a

trn cng ca thp C-04 (Gas Stripper), sau khi c gia nhit t 20oC ln 41oC

trong thit b gia nhit kh/Condensate (E-08A/B, Gas/Condensate Exchanger)

bi dng kh nng 54oC t my nn kh K-01 (Deethanizer OVHD Compressor).

Dng kh t thit b trao i nhit c chuyn n y thp C-04 (Gas

stripper). Mc ch chnh ca thit btrao i nhit l thu hi nhit, chng li s

to thnh hydrate u ra ca van FV-1082 (ni m p sut hot ng gim t

75 BarA xung 47,5 BarA).

Mc ch ca thp lm sch kh l loi nc khi condensate bng dng kh

nng (kh kh). Thp lm sch gm 6 a van, Condensate tip xc trc tip vi

dng kh nng i ln trong thp, v vy nc trong condensate s c cun

theo dng kh. Thp C-04 hot ng p sut hot ng l 47,5 BarA c iu

chnh bi thit biu chnh PICA-1801, PICA-1801 c lp t x kh ra

uc t, trnh hin tng qu p.


24/35


SVTH : NHM 1 24

Dng lng t y ca thp C-04 thng qua van iu chnh dng FV-1701

(kt hp vi thit biu chnh mc LICA-1821, cascaded control) a vo a

th 14 hoc 20 ca thp tch ethane, sau khi c gia nhit t 40

o

C ln 86

o

Ctrong thit btrao i nhit E-04 (Condensate Cross Exchanger) bi dng nng

154oC i ra ty thp C-02 ( Stabilizer ). Mc ch ca thit btrao i nhit l

tn dng v thu hi nhit.

I.3.2.4.5. Qu trnh tch tinh v lm lnh su

Mt phn ba lng kh c lm kh, s chuyn n thit b trao i

nhit E-14 (Cold Gas/Gas Exchanger) lm lnh su t 26oC xung -35oC

bng dng kh lnh tnh thp tinh C-05 (Rectifier) c nhit -42,5oC. Nhit

ca dng kh ra khi thit btrao i nhit ny l -36oC, y l mt thng s

quan trng trong qu trnh x l kh, nu nhit ny cao hn gi tr, th mt

lng hydrocacbon lng c thkhng c thu hi, v nu nhit ny thp

hn gi trc bit , th hydrate c thhnh thnh trong ng ng. V vy,

nhit ny c iu chnh bng dng lnh qua E-14 thng qua biu chnh

nhit TICA-1009. B iu chnh nhit TICA-1009 c lp t trn

ng ng u ra ca dng lnh, nhm trnh hin tng nhit thp hn gi tr

nhit thit kng ng (-10oC) bng cch gii hn dng kh lnh thng qua

thit b TY-1006.

p sut ca dng kh u vo c gim t 109 BarA xung 33,5 BarA

thng qua van FV-1001, nhqu trnh gin non nhit v nhit ca n

gim xung -62oC. Dng lnh ny gm 56% (t l mole phn) l lng, c a

vo a trn cng ca thp tch tinh C-05 nh l dng hi lu ngoi cho thp.

Hai phn ba lng kh cn li c a vo h thng gin n kh CC-01

(Turbo Expander), ti h thng ny kh c gin t 109 BarA xung 33,5 BarA

v nhit h xung -18oC. Van FV-0501B c lp trn ng bypass qua

CC-01, nhm trnh qu p cho h thng. Nu b phn gin nca CC-01 ngng

lm vic (SDV-1101 u vo phn gin nng li trong vng 0,5 giy), van


25/35


SVTH : NHM 1 25

FV-0501 s tng m, do vy c thtrnh c hin tng di p t ngt.

Dng lnh ny sau c a vo y thp tch tinh C-05.

Trong thp tch tinh C-05, kh cha ch yu l methane, ethane c tch rakhi dng lng cha cc cu t nng hn nh propane, butane v cc cu t

nng khc di p sut hot ng 33,5 BarA, nhit nh thp l -43oC v

nhit y thp l -20oC. Phn trn ca thp tch tinh nh l bnh tch

kh/lng. Cn nhn mnh thm rng trong cc ch hot ng AMF v MF,

thp tch tinh c tc dng nh mt bnh tch, nhng trong ch hot ng

GPP n c tc dng nh l mt thp chng ct phn on c dng hi lu ngoi

v khng c thit b gia nhit bn ngoi (Reboiler). Thp C-05 c 12 van dng

a.

p sut hot ng ca thp tch tinh trong ch hot ng GPP l 35,5

BarA thp hn so vi ch hot ng MF v AMF (47,5 BarA). p sut ny

khng c duy tr bi cc thit biu chnh p sut m ph thuc vo hiu

sut lm vic ca Turbo-Expanger/Compressor.

Dng kh tnh thp tch tinh c nhit -43oC c dng lm lnh su

dng kh nguyn liu i vo thit b trao i nhit E-14, sau c nn bi

phn nn ca CC-01. Mt van anti-surge FV-1111 c lp t phn nn ca

CC-01. Trc khi khi ng my nn, dng kh thng phm i theo ng

bypass (qua van FV-1111), sau tng thay i ti my nn khi my nn

khi ng, nhvan mt chiu lp t trn ng ng (check value). Khi my

nn ngng hot ng dng kh tr li di chuyn theo ng ng bypass. Khi

dng kh vo my nn khng , van anti-surge FV-1111 s mra gi cho

my nn lm vic ngoi vng Surge.

Dng kh sau c chuyn n ng ng dn kh thng phm qua b

o dng ME-13. ME-13 bao gm 2 bo dng FI-1150A/B, mt lm vic, mt

dphng. Van iu p PV-1114A c lp t trn ng ng iu chnh

p sut u ra ca nh my l 47 BarA.


26/35


SVTH : NHM 1 26

Dng lng ty thp tch tinh thng qua thit biu chnh dng FIC-1201

v thit biu chnh mc LIC-1201A c a vo a ca thp trn cng ca

thp C-01 nh l dng hi lu ngoi.I.3.2.4.6. iu chnh p sut v lu lng dng

Trong ch hot ng GPP, lu lng dng v p sut u vo ca nh

my c iu chnh tng. Thit biu chnh p sut v dng PCIA-0502A

, FIC-0501 c lp t trn ng ng dn kh sau h thng thp hp ph V-

06A/B v tn hiu iu khin t hai thit biu chnh ny nhvo b la chn

PY-0502 (Low selector). Sau chuyn n iu chnh ng mvan u vo

phn gin nca CC-01 (iu chnh tc quay ca CC-01). Trong trng hp

CC-01 dng, van FV-0501B s tng m trnh qu p ca h thng.

Khi lng kh cung cp ngoi khi khng , p sut u vo nh my gim

xung di 109 BarA, PICA-0502A gim tc ca CC-01 gi cho p sut

kh u vo nh my 109 BarA. Khi lng kh cp tngoi khi tng v my

nn khng th gim p sut mc d chy vi tc max, PICA-0502A c th

mCC-01 bypass (FV-0501B). Nu dng kh c lu lng ln hn cng sut

ca nh my, FIC-0501 gi cho tc dng kh gi tr bng vi cng sut ca

nh my bng iu chnh van FV-0501B. Nu p sut vt qu 109 BarA,

PICA-0502B s kch hot mvan PV- 0502 gii phng lng kh d a ra

uc t, do vy thit b bo v khi tnh trng qu p.

Trong trng hp, nhu cu tiu th ca cc h tiu th ln hn lng kh

cung cp, p sut u ra nh my c iu chnh 47 BarA bi van iu p

PV-1114A (Pressure Control Valve) c lp t u ra nh my, trc

ng ng dn kh. Khi nhu cu tiu th ca cc h tiu th thp hn lng kh

cung cp, mt lng kh d sc t thng qua van PV-1114B. V vy trong

chai trng hp trn p sut u ra ca nh my c iu chnh tt.


27/35


SVTH : NHM 1 27

I.3.2.5. Ch GPP chuyn i

I.3.2.5.1. Cc thit b b sung

Cc thit bch ny bao gm ton b cc thit b ca ch GPP vthm trm nn kh u vo K-1011A/B/C/D v bnh tch V-101.


gii quyt thm lng kh ng hnh t m Rng ng gy tt p sut

ng ktrn ng ng, em li hiu qu kinh t cao nht. Trm nn u vo

c lp t gm 4 my nn kh : 3 my hot ng v 1 my dphng, m

bo p sut thit k l 109 bar. Ngoi ra, mt s thit b ca nh my c ci

hon kt ni mrng vi trm kh nn.

Kh ng hnh t m Bch H v Rng ng vi lu lng t5,7 n 6,1

triu m3/ngy vo h thng Slug Catcher trong iu kin p sut 65 80 bar,

nhit 20 n 300C. Sau , dng kh ra tSC c chia lm hai dng:


28/35


SVTH : NHM 1 28


29/35


SVTH : NHM 1 29

Dng th nht c lu lng khong 1 triu /ngy c a qua van gim

p PV-106, gim p sut t 65 bar-80 bar xung 54 bar v i vo thit b tch

lng V-101. Lng c tch ra ti bnh V-101 c a vo thit b V-03 chbin su. Kh i ra t bnh tch V-101 c a vo h thng ng dn kh

thng phm 16 cung cp cho cc nh my in.

Dng thhai c lu lng khong 5 triu/ngy c a vo trm nn

kh u vo K-1011 A/B/C/D (3 my hot ng v 1 my dphng) nn

nng p sut t 65 bar- 80 bar ln 109 bar, sau qua h thng qut lm mt

bng khng kh E-1011, lm ngui dng kh ra khi my nn n nhit

khong 40-500C. 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 ph V-06 A/B

tch trit nc, trnh to thnh hydrate trong qu trnh lm lnh su.

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

phn ba dng kh ban u qua thit btrao i nhit E-14, h nhit t 26,5

xung -350C vi tc nhn lnh l dng kh kh n tnh thp C-05 c nhit

-450C, sau c lm lnh su bng cch gim p qua van FV-1001. p

sut gim t 109 bar xung 37 bar ( bng p sut lm vic ca C-05) ko theo

nhit gim xung -620C, ri c a vo a trn cng ca thp tinh ct C-

05, ng vai tr nh dng hi lu ngoi ca nh thp. Hai phn ba dng kh cn

lc a vo thit b CC-01 thc hin vic gim p t 109 bar xung 37

bar v nhit gim xung -120C v c a vo y 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 -450C v -150C, ti y kh (ch yu l metan v etan) c

tch ra ti nh thp C-05. Thnh phn lng ch yu l C3+c tch ra ty

thp.

Dng kh i ra tnh ca thp tinh ct c nhit -450C, c s dng

lm tc nhn lnh cho thit btrao i nhit E-14 v sau c nn ti p sut


30/35


SVTH : NHM 1 30

54 bar trong phn nn ca thit b CC-01. Hn hp kh i ra thit b ny l kh

thng phm c a vo h thng 16 n cc nh my in.

Dng lng ra ty thp tinh ct, c a vo a trn cng ca thp C-01nh dng hi lu ngoi nh thp.

Trong thp C-01, vi nhit y thp l 109 0C ( nhthit b gia nhit E-

01A/B), p sut hot ng ca thp l 27,5 bar. Cc hydrocacbon nh nh

metan, etan c tch ra i ln nh thp vo bnh tch V-12 tch lng c

trong kh, v c my nn K-01 nn t p sut 27,5 bar ln p sut 47,5 bar.

Dng ra khi my nn K-01 c a vo E-08, sau vo thp C-04. Do bnh

tch V-03 phi gim p sut vn hnh t 75 bar theo thit k xung cn 45 bar,

nn lng lng t y bnh tch V-03 c a trc tip qua E-04A/B m

khng i vo thit btrao i nhit E-08 nh thit k. V vy, E-08 v C-04 lc

ny khng hot ng nh cc thit b cng ngh, m ch hot ng nh cc

ng ng dn kh.

Dng kh t K-01 sau c nn n 75 bar nhmy nn K-02, ri li tip

tc a vo thit btrao i nhit E-19 bng vic s dng dng tc nhn lnh l

khng kh. Dng kh ra t E-19 c a vo my nn K-03 nn ti p sut

109 bar, v lm lnh trong thit b trao i nhit E-13.Sau khi, ra khi E-13

dng kh ny c a ti thit b V-08 nh l nguyn liu u vo. Thp tch

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

chng ct.

Dng lng i ra ty thp C-01 c a qua V-12, sau ti thp C-02.

Thp C-02 l thit b c cu trc dng thp, c p sut hot ng l 10 bar, nhit

y thp c duy tr 1350C nhthit b gia nhit E-03, nhit nh thp

560C. Hn hp Bupro c tch ra nh thp, cn Condesate c tch ra

y thp. Hn hp Bupro tnh thp C-02 tip tc 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 mt phn li nh thp, v phn cn li theong ng dn sn phm Bupro n bn cha V-21A/B hoc n kho cng Th


31/35


SVTH : NHM 1 31

Vi. Trong trng hp cn tch ring thnh sn phm Propan v Butan theo yu

cu ca khch hng th sn phm lng t bnh V-02 sc bm P-01A/B bm

qua thit b trao i nhit E-17 ( tn dng nhit) trc khi vo thp C-03.Thp C-03 c nhit y l 950C, p sut hot ng ca thp l 16 bar. Propan

c tch ra nh thp, nhqut E-11 lm lnh v c a vo bnh tch V-

05, sau c bm P-03 A/B cho hi lu mt phn trli nh thp v phn

cn li theo ng ng dn Propan thng phm. Butan c tch ra y thp,

qua thit b lm lnh E-12 ri theo ng ng dn Butan thng phm.

Lng tch ra ty thp C-02 l Condensate, c h nhit xung 600C

nh thit b trao i nhit E-04A/B v xung 450C nh thit b E-09. Sau

c a ti bn cha TK-21 hoc ng ng dn Condensate ti kho cng Th

Vi. Condensate (sau khi tch nc ti Slug Catcher) c tch ra trong Slug

Catcher c a vo thit b V-03 hot ng p sut 45 bar v nhit 200C

tch cc cu t kh nh b hp th trong hn hp lng ny, bng cch gin

nv gim p. T thit b V-03, Condensate c dn ti thit btrao i nhit

E-04 ( tn dng nhit ca dng Condensate ra ty C-02) sau i vo a

th 20 ca thp C-01.


32/35


SVTH : NHM 1 32

CHNG II : AN TON TRONG VN HNH

II.1. B PHN PHNG CHY CHA CHY

Phng chy cha chy l mt cng vic ti thiu quan trng trong bt klnhvc no. Ty c th ca tng vng, tng v tr, tng cng vic ca nh my m

ngi ta trang b h thng PCCC vi qui m khc nhau. N quyt nh n s

tn ti v pht trin ca nh my.

B phn phng chy cha chy (PCCC) ca nh my x l kh Dinh C

c thnh lp ring mt b phn lun sn sng theo di v kp thi x l khi c

ha hon xy ra. i ng nhn vin cha chy bao gm 12 ngi, vi 2 xe cu

ha lun trong tnh trng sn sng.

Hnh :Din tp phng chy cha chy

II.2. PHT HIN NGUY C CHY N

Cc nguy c gy ra chy nc pht hin nhcc u d cm bin: cm

bin kh, cm bin nhit, cm bin khi, cm bin la. Cc u cm bin nhit,

khi b tr trong phng iu khin, nh t my pht in, trm bm cc ha

cht v cc cng trnh ph trkhc ca nh my. Cc b cm bin kh, la b tr

quanh cc thit b cng ngh, cc b cm bin cn b tr trn cng phn vng


33/35


SVTH : NHM 1 33

kim sot c th v trc tip gim st nguy c chy ntrong vng . Cc tn

hiu thu c tcc u cm bin c truyn v v pht hin trn panel iu

khin ca h thng phng chng chy n ca phng iu khin trung tm. Paneliu khin tng x l cc tn hiu cm bin ny xc nh vng c nguy c

chy nng thi thc hin cc lnh:

ng van c lp vng chy n v xkh ra uc t. Kch hot my bm cha chy. Mvan xnc, CO2 hoc bt vo vng c chy n.

Bo ng bng ci, n chp vng c chy nv phng iu khin.II.3. KHI VO NH MY CN LU TI NHNG BIN BO CM

V CH DN

II.3.1. Khi c s c xy ra

a. Ci bo ng vang ln.

- Ci khn cp.

- Ci bo la.

- Ci bo kh.

- Ci bo nhng tnh trng khc.

- Ci bo yn.

b. Phng iu khin thng bo loa ngh nhng ngi khng c nhimv

ng cu ri khi nh my.

c. Thot khi khu vc lm vic bng cc cng thot him gn nht.

d. Tp trung ti im tp kt (cng chnh khu iu hnh)

II.3.2. Quy nh an ton ca nh my

-Ni quy ra vo.

-Ni quy xe ra vo.

-Ni quy phng chy cha chy.

-Ni quy lm vic.

- Quy nh an ton chung.


34/35


SVTH : NHM 1 34

II.3.3. Nhng quy nh chung ca nh my khi vo lm vic

- Phi c giy php ra vo.

- S dng bo h lao ng.- Khng mang theo vt dng c th gy la.

- Khng ht thuc v cc hot ng to la.

- Tun theo ch dn ca cn b ch dn.

- Quan st li thot him v im tp kt.

- Thot ra khi nh my v n im tp kt khi c ci bo ng.


35/35

Bo co Thc tp Chuyn ngnh GVHD: TS. L Thanh ThanhKT LUN

Nh my ch bin kh Dinh C cso v th kinh t quan trng. Gp phn mbo an ninh nng lng quc gia v khu vc c li nhun rt ln cho t

nc. Vi h thng cng ngh hin i lun c cp nht gp phn nng cao

hiu qu sn xut. Sn phm ca nh my c cht lng cao v ngy cng a

rng. Nh my c tng ha cao.

Nhng vn an ton, mi trng, k thut lun c ch trng cao.

Nh my l mt h thng khp kn, lun ch ng v nng lng v kh

nng duy tr nh my hot ng lin tc vi nhiu ch hot ng linh hot

(AMF, MF, GPP, GPP chuyn i).

Cng vi nh my kh Nam Cn Sn gp phn tn dng c hiu qu

lng kh thin nhin v kh ng hnh t vic khai thc du ngoi khi, trnh

lm tht thot kh thin nhin v kh ng hnh t vic khai thc du ngoi khi,

trnh lm tht thot ti nguyn qu gi ca t nc.

Trong cng cuc xy dng v pht trin hin nay, cng vi cc cng trnh

trng im quc gia GPP chng tc khnng lm ch cng ngh ca

Vit Nam. Pht huy tim nng sang to, i tt n u nhng cng ngh tin

tin, pht trin kp vi tc ca th gii.

bÁo cÁo thỰc tẬp dinh cỐ 2013

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