1. Tng quan v ethylbenzenCng thc phn t v cu trc ca ethylbenzen:

Tn IUPAC: ethylbenzeneEthylbenzen(hay ethylbenzol, phenyletane) l mt hp chthyrocacbon thmc cng thc phn tC8H10. Ethylbenzene l ng phn hydrocacbon thm ca o-xilen,m-xilenvp-xilen. Tng ttoluen, ethylbenzene c cc phn ng th nhn khi c mt btFe, th nhnh khi a ra ngoi nh nng, cngH2khi c xc tcniken, b xi ha mch nhnh khi un cch thy vi dung dchKMnO4. C 99% ethylbenzene trn th gii c s dng sn xut styrene trn ton th gii. Nhng nm 1960 v u nhng nm 1970 t l tng trng hng nm ca styrene v ethylbenzene trung bnh 10%. Khong 15% ca ethylbenzene c tiu th trong sn xut hp tc ca styrene v oxit propylene.Cc nh my ny cung cp mt li th kinh t v gi tr ca sn phm propylene oxit ng.Ethylbenzene c sn xut nhiu ti cc nh my H Lan, Ty Ban Nha, Nht Bn, Singapore, Hn Quc v Hoa K.2. Tnh cht vt l iu kin thng, ethylbenzene l cht lng trong sut, khng mu vi mi thm c trng. Ethylbenzene c kch ng cho da, mt v tng i c hi khi ung phi, ht th v hp th qua da.Bng mt s tnh cht vt l ca ethylbenzene:Khi lng mol phn t (g.mol-1)106.17

Khi lng ring 150C (g.cm-3) 0.87139

T trng (so vi khng kh) 3.7

Nhit si 101.3 kPa 136.2 0C

Nhit nng chy -94. 949 0C

Ch s khc x

20 0C : 1.49588 25 0C : 1.4932

Nhit ti hn 344.02 0C

p sut ti hn (kPa)3609 ( 36.09 bar )

Nhit chp chy 15-20 0C

ha tan trong nc 20 0C 0,015g trong 100ml

Gii hn nn 0.263

nht (cP)0.699 200C

3. Tnh cht ha hc Phn ng quan trng nht ca ethylbenzene l dehydro ha to styrene nhit cao 600-6600C trn xc tc kali vi cht mang l oxit st. Hi dng pha long. Thng thng chn lc ca styrene trong khong 90-97% mol vi chuyn ha t 60-70%. Phn ng ph gm dealkyl ha ethylbenzene to thnh benzene v toluene. Mt phn ng quan trng na l oxi ha ethylbenzene bng khng kh to thnh hydroperoxide C6H5CH(OOH)CH3. Phn ng tin hnh trn pha lng khng cn xc tc. Tuy nhin do hydroperoxide khng n nh d phn hy nhit cao, phi c ti thiu ha gim t l phn hy. S hnh thnh sn phm ph s gim nu duy tr nhit thp trong sut thi gian phn ng. Hydroperoxide sau c x l vi propylene to thnh styrene v propylene oxide. Nm 1999, 15% ethylbenzene sn xut trn th gii c s dng sn xut styrene monome v propylene oxide.Ngoi ra cn c cc phn ng c trng cho tnh cht ha hc ca ethylbenzene nh: Phn ng ethylbenzene vi Br2 Phn ng cng H2 Phn ng halogen ha nhm alkyl4. Cc phng php sn xut, iu chC 2 phng php sn xut ethylbenzene: Chng hn hp hi hydrocacbon thm C8 Ankyl ha benzen bng etylen4.1 Qu trnh chng tch t hn hp C8 Khong 1% ethylbenzene c sn xut t qu trnh ny, thng kt hp vi sn xut xylene t sn phm ca qu trnh reforming Sn xut ethylbenzene t ngun ny tin hnh phn ln bng chng ct,qu trnh tch rt kh khn, cng ngh tin hnh chng trong khong hp (siu chng phn on) Cng ngh u tin ca hng Cosden Oil and Chemical Company ra i nm 1957, lin kt vi Badger Company Qu trnh tch yu cu 3 thp chng,mi thp hn 100 a. Nhiu nh my c xy dng M, Chu u, Nht trong nhng nm 60, tuy nhin do vn u t v gi nng lng tng nn phng php ny khng c tnh cnh tranh.4.2 Qu trnh ankyl ha bng ethylene c tin hnh ch yu theo 2 phng php: Tin hnh trong pha lng Tin hnh trong pha hi vi xc tc rn tng c nh5. Tn cha v vn chuyn ethylbenzene5.1 Tiu chun k thut ca ethylbenzene sn phma s cc nh sn xut xc nh c im k thut bn hng ca h theo tiu chun M v th nghim phng php ASTM D3193 "Tiu chun k thut i vi ethylbenzene ". Cc thng s chnh ca mt c im k thut bn hng thng thng l: ti thiu tinh khit ca 99.5 wt % v t chun t l 10 ca kim tra mu (Hazen color test) vi dung mi l Pt/Co.5.2 Tn cha v vn chuyn sn phm ethylbenzeneEthylbenzene sau khi sn xut t tiu chun k thut trn s c a sang bn cha sn phm. Ethylbenzene l mt cht lng khng mu v c nhit chp chy thp ( 15-200C) nn rt d gy chy n trong qu trnh lu tr v vn chuyn. Gii hn ca oxygen trong bn cha dn n gy chy n 1400C, phn trm oxygen l 8 % th tch.V vy khi lu tr hay vn chuyn ethylbenzene, cc bn cha cn c bao ph vi mt kh tr (v d: N2) v m bo rng hm lng oxygen l di 8% pha hi vn nm khi phm vi chy n. Ngoi ra, ngi ta s duy tr nhit trong b cha l di nhit chp chy mt vi nhm m bo an ton.Ethylbenzene c th to hn hp chy n vi khng kh nhit thp, v vy trong qu trnh lu tr hay vn chuyn cn thng xuyn kim tra r r v khc phc ngay lp tc.Cc thit b lu tr v vn chuyn ethylbenzene cn c thit k c b phn iu khin trn ethylbenzene trong qu trnh bc vc hoc di chuyn. hn ch tc hi ca vic trn ethylbenzene, xung quanh cc b cha nn c cc l ng, hay bng b tng.i vi vn chuyn bng ng b, ng thy, ng bin v ng tu ha, ethylbenzene (m ha cht UN1175) c xp vo loi ha cht d chy n loi 3 .