Tuy€n tap bio cao Hpi nghj KHCN "30 nim Dau khi Viet Nam: Co hpi mdi, thich thde mdi" 65<br />
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DANH GIA XUC TAC VA NGUYEN LIEU CHO QUA TRINH FCC<br />
CUA NHA M A V LOC DAU VIET NAM BANG PHUONG P H A P M . A . T .<br />
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Nguyen Hien Phong, Tran Thanh Phuong, Nguyen Anh Dire<br />
Trjnh Ngge Trung, Dinh Thj Thiiy Linh<br />
TT Nghien cdu vd Phdt triin Chi biin Dau khi<br />
K. Kato, A. Tamai<br />
Nippon Mining Research and Technology Co.<br />
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TOM T A T<br />
Qud trinh cracking xuc tdc Id qud trinh sdn xudt xdng quan trgng nhdt trong nhd<br />
mdy lge ddu. Viec lua chgn xiic tdc, nguyen lieu cho qud trinh FCC quyet dinh chdt luang,<br />
sudt luang sdn phdm cua qud trinh. Phirang phdp MAT (Micro Activity Test) - ASTM<br />
D3907 dimg de xdc dinh hogt tinh, do lira chgn cua xiic tdc FCC cdn bdng sir dung<br />
nguyen lieu chudn, ben cgnh do, nd cdn duac dimg de ddnh gid xuc tdc da duac gidm<br />
hogt tinh ciing nhu ddnh gid nguyen lieu cho qud trinh.<br />
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DOI TUgfNG THU^ NGHIEM vA FHlTONG P H A P NGHIEN ClTU<br />
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Bang 1: Kc hoach thi nghiem<br />
Sd thi nghiem M-0 M-1 M-2 M-3<br />
Thiet bj xir ly bang hoi nude, ''C Xuc tac mdi 760 760 760<br />
Thiet bj Autosorb:<br />
- Dien tich be mat 0 0<br />
- Phan bd 16 xdp 0 0<br />
Thiet bj MAT:<br />
- Nhiet dp phan iing, °C - 510 510 510<br />
- Xiic tac/nguyen lieu 3,0 4,5 6,0<br />
GC (Phan tich khi cracking ) - 0 0 0<br />
DGC (Phan tich chit long) - 0 0 0<br />
Thiet bj Steaming unit: lam giam boat tinh xiic tac FCC bang nhiet do va hoi<br />
nude: tao mau xiic tac FCC dugc giam bdt hoat tinh bdi nhiet do va hoi nude d<br />
760"C tir xiic tac mdi.<br />
Thiet bj Autosorb: Xac djnh anh hudng eua hoi nude, nhiet do len dien tich be<br />
mat, kich thudc ciing nhu phan bd lo xdp ciia xiic tac mdi ciing nhu xiic tac da<br />
dugc giam boat tinh.<br />
Thilt bi MAT, sac ky khi, sic ky chung cit md phdng: Xac djnh su khae nhau<br />
66 Danh gia xiic tie va nguyen lifu cho qui trinh FCC ciia nha may IQC dau Vift Nam^<br />
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cua kha nang cracking cac mau xuc tac da dugc xir ly bing each thay ddi nhiet<br />
do phan iing, ty le xuc tac/dau.<br />
• Nguyen lieu: Phan doan VGO Bach Hd, ty trgng nguyen lieu: 0,8528.<br />
• Xiic tac: Miu xiic tac FCC mdi do Nippon Mining Research & Technology Co.<br />
(Nhat Ban) cung cap.<br />
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KET QUA CHAY STEAMING UNIT<br />
Tao ra mau xuc tac FCC (S-760°C ± TC) dugc giam. boat tinh bdi nhiet do va hoi<br />
nude tir xiic tae mdi, khdi lugng mau 120g theo quy trinh ASTM.<br />
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Bang 2: Ket qua chay AUTOSORB<br />
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Xuc tdc mai S-7 60<br />
Dien tich be mat (m^/g) 293,25 245,55<br />
Tdng the tich Id xdp (cc/g) 0,2475 0,2373<br />
Kich thudc Id trung binh (A") 34,46 54,64<br />
Phan bd kich thudc Id xdp Hinhl Hinh 1<br />
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• Dien tich be mat cua xiic tac FCC mdi giam khi xir ly bdi hoi nude va ty le<br />
nghjeh vdi nhiet do xir ly.<br />
• Dd thj BET cua xiic tac mdi, S-760 (Hinh 2): Khi lugng nito hap phu tang, gia trj<br />
Spindle, I/W((Po/P) - I) se tang, tuong ty nhu vdi P/PQ, gia.^trj Spindle se tang<br />
theo quy luat xiic tac mdi —> S-760.<br />
• Phan bd kich thudc Id xdp: Kich thude Id xdp trung binh ciia S-760 (55,64A°)<br />
ldn hon so vdi xiic tac mdi (34,46 A°).<br />
im KACli.Ml Uir^aiptiau Dvl'l)<br />
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Hinh 1<br />
TuyIn tap bio cio Hpi nghj KHCN "30 nim Diu khi Viet Nam: Co hpi mdi, thich thde mdi' 67<br />
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KET QUA CHAY MAT, GC vA DGC<br />
Bang 3: Ket qua phan tich san pham khi, long ciia MAT<br />
Sd thi nghiem M-1 M-2 M-3<br />
Xuc tac FCC FCC FCC<br />
Mau xuc tac 760''C*5h 760''C*5h 760°C*5h<br />
Khdi lugng xiic tac (g) 4,0 4,0 4,0<br />
Nguyen lieu VGO VGO VGO<br />
Ty trgng nguyen lieu 0,8528 0,8528 0,8528<br />
Nhiet do phan img (°C) 510 510 510<br />
Ty le xuc tac/nguyen lieu (kl/kl) 3,0 4,5 6,0<br />
Do chuyen hda (%kl) 81,81 91,89 94,36<br />
Hieu suat san pham (%kl)<br />
H2 0,09 0,15 0,14<br />
CH4 0,54 0,84 1,01<br />
C2H6 + C2H4 0,95 1,49 1,86<br />
Khi dot ( H2, C , C2) 1,58 2,47 3,01<br />
Cdc (13,08) (16,95) (19,40)<br />
C3H8 2,16 3,13 3,88<br />
C3H6 3,44 4,74 5,11<br />
1-C4H10 6,04 7,20 8,00<br />
n-C4Hio 1,32 1,41 1,58<br />
l-C4H8 + i-C4H8 1,10 0,93 0,72<br />
t-2-C4H8 + C-2-C4H8 + 1,3-C4H6 2,39 2,59 2,21<br />
LPG ( C3, C4 ) 16,45 20,00 21,50<br />
Xang(C5-216''C) 49,71 52,00 50,14<br />
LCO(216-360°C) 12,28 7,67 5,40<br />
HCO(360°C^) 6,90 0,91 0,55<br />
Tong: 86,92 83,05 80,60<br />
Do chuyin hda: 100 - (LCO + HCO )<br />
Coc: 100 - (Khi d6t + LPG + Xang + LCO + HCO) (1)<br />
• Mau xuc tac S-760: Khi ty le xiic tac/nguyen lieu tang tir 3,0, 4,5, 6,0 d ciing<br />
nhiet do phan img (510°C), hieu suit khi ddt va LPG tang tuin tu 29,53, 36,95,<br />
40,90%kl. Ket qua nay hoan toan phii hgp vdi quy luat.<br />
• Hieu suat cdc dugc tinh theo cdng thiic (1) bdi vi khdng thi xac djnh dugc cdc<br />
ling dgng tren bl mat xiic tac va Id phan img.<br />
68 D i n h g i i xiic tic v i nguyen lifu cho q u i trinh FCC cua n h i miy Ipc dau Vift Nan^.<br />
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Hinh 2: Phan bo san pham MAT<br />
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DO CHINH XAC, DO LAP LAI<br />
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1. Thiet bj Autosorb<br />
• Do dien tich bl mat mau chuan AI2O3 (KHA-B8I6) theo 2 phuong phap: Phuong<br />
phap do 3 dilm tai gia tri P/PQ = 0,1; 0,2; 0,3 va Phuong phap do 39 diem, chgn 3<br />
dilm tai gia trj P/PQ = 0,1; 0,2; 0,3.<br />
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Dien tich be mat ( m'/g)<br />
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Sd lieu chuan 164 ±5<br />
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Phuong phap I 161,29<br />
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Phuong phap 2 162,68<br />
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• Do dien tieh be mat mau xiic tac FCC mdi 2 lan vdi eiing dieu kien<br />
(Phuang phap 5 dilm: P/PQ tir 0,1 - 0,5).<br />
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Sd ldn chgy Dien tich be mat (m^/g)<br />
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1 293,25<br />
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2 292,28<br />
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Ket luan: Thiet bj Autosorb hoat ddng tdt.<br />
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2. Thilt bj MAT<br />
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• Do chinh xac ciia thilt bi MAT se dugc kilm chiing theo nguyen lieu chuin va<br />
xuc tac chuin cua NIST, USA (RM-8589 & RM-8590).<br />
• Do lap: Thi nghiem 3 lin d ciing dilu kien phan iing, mau xiic tac FCC S-760°C;<br />
nhiet do phan iing: 5 lO^C; ty le xiic tac/ nguyen lieu: 3,0.<br />
Tuyen tap bio cio Hpi nghj KHCN "30 nim Dau khi Vift Nam: Cff hpi mdi, thach thde mdi" 69<br />
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Hinh 3<br />
Ket luan: thilt bi MAT hoat ddng tot.<br />
3. Thiet bj GC, DGC: Hoat ddng tdt, chuin theo djnh ky.<br />
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TAI LIEU THAM KHAO<br />
1. ASTM D5154. Phuang phdp thie nghiem tieu chudn "Xdc dinh hogt tinh vd do lua<br />
chgn ciia xuc tdc FCC bdng Microactivity Test".<br />
2. ASTM D4463. Hucmg ddn thie nghiem "Gidm hogt tinh xuc tdc FCC mai bdng hai<br />
nuac -phi kim logi".<br />
3. ASTM D2887. Phuang phdp thir nghiem tieu chudn "Phdn bd khodng nhiet dp sdi cua<br />
cdc phdn dogn ddu md bdng sdc ky khi".<br />
4. Huang ddn sic dung thiet bi Autosorb-1. Gas sorption system. Quantachrome<br />
Corporation, My.<br />
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