Ethylene cracking C5 feem atmospheric siab rectification intercepts 45-75â ¢ isoprene enriched tivthaiv raws li raw khoom A; ethylene cracking C5 feem atmospheric siab rectification intercepts 25-45â º ̓ isoprene enriched tivthaiv raws li raw khoom B; Ethylene cracking C9 feem yog lub tshuab nqus tsev rectified nyob rau hauv 0.08ï½¢ 0.095MPa, Petroleum Resin thiab cov feem nrog boiling point ntawm 140ï½ ោង 180â ¢ 180â ¢ yog coj los ua cov khoom siv raw C. Cov khoom siv raw li A, B thiab C yog npaj raws li qhov loj piv ntawm 1: 1.5ï½ 3.0: 1.5ï½ 3.0 C5 / C9 roj av resin polymerization raw khoom D;
Tom qab dehydrating lub saum toj no-hais polymerization raw khoom D los ntawm ib tug 4A molecular sieve packing pej thuam, Petroleum Resin xaiv hydrogenation yog ua nrog ib tug Pd / Al2O3 catalyst kom tshem tawm alkyne, Roj av Resin thiab ces 0.05 rau 0.5 wt% ntawm FriedelCrafts yog ntxiv catalyst. prepolymerized nyob rau hauv chav tsev kub rau 0.5 mus rau 1.5 teev, Petroleum Resin thiab ces calcium hydroxide catalyst yog tshem tawm los ntawm kev sib xyaw nrog methanol, thiab tom qab distillation, Petroleum Resin lub polymer raw khoom feem E muaj ib tug boiling point ntawm 25 mus rau 180 ° C yog tau. Petroleum Resin saum toj no polymerized raw khoom E yog prepolymerized nyob rau hauv ib tug high-pressure tshuaj tiv thaiv kettle nrog stirring ntawm ib tug kub ntawm 180 ° C mus rau 230 ° C rau 3 mus rau 5 teev. Tau txais cov khoom dimerization F ntawm Centaolefin thiab Styrene los yog Methyl Styrene;
Siv cov khoom dimerization saum toj no F raws li cov khoom siv raw, Petroleum Resin sib xyaw nrog cov kuab tshuaj diluting ntawm qhov sib piv ntawm 1: 0.1 txog 1.0, Petroleum Resin thiab ntxiv cov roj av boron trifluoride catalyst accounting rau 0.1 txog 0.5% ntawm tag nrho cov huab hwm coj. ntawm cov khoom siv rau catalyze polymerization ntawm 30 mus rau 65 ° C 2 mus rau ib tug maub daj rau xim av polymerization tov tau nyob rau hauv 5 teev. Cov tshuaj polymerization tau muab tshem tawm ntawm cov catalyst nrog kev sib xyaw ntawm calcium hydroxide thiab methanol kom tau cov tshuaj daj daj daj; Roj av Resin cov tshuaj saum toj no tau raug hluav taws xob desalination thiab lub cev qhuav dej ntawm 50 txog 80 ° C. Pass active Al2O3 khoom txaj. ntawm âº
C5 / C9 roj av resin tov tom qab cov saum toj no pretreatment yog yaj nyob rau hauv ib tug dilution hnyav ntawm ib tug loj ratio ntawm 1: 1 mus rau 5, thiab raug rau ib tug hydrogenation cov tshuaj tiv thaiv nyob rau hauv lub xub ntiag ntawm ib tug hloov Pd catalyst kom tau ib tug hydrogenated diluted resin tov. . Cov tshuaj tiv thaiv hydrogen siab yog 10.0ï½ 17.0MPa, Petroleum Resin cov tshuaj tiv thaiv qhov chaw tshaj tawm yog 0.125ï½,0.333h / 1, lub sijhawm tshuaj tiv thaiv yog 3ï½ 8h; Petroleum Resin tshem tawm cov kuab tshuaj thiab cov Polymer tsawg, , C5 / C9 hydrogenated roj av resin.
