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焦化蜡油在ZSM-5和USY催化剂上的裂化性能研究 被引量:7

CRACKING PERFORMANCE OF COKER GAS OIL OVER ZSM-5 AND USY ZEOLITE CATALYSTS
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摘要 在实验室重油微反装置上对比研究了焦化蜡油在ZSM-5和USY催化剂上的反应规律。实验结果表明,与USY催化剂相比,焦化蜡油在ZSM-5催化剂上的转化率虽然相对较低,但因ZSM-5分子筛对焦化蜡油中大分子氮化物进入分子筛孔道具有阻碍作用,使其对碱性氮化物中毒的敏感性明显降低;同时,在较低的转化率下,采用ZSM-5催化剂时液化石油气产率可达到23.6%以上,丙烯产率在10%以上。说明采用ZSM-5催化剂对催化裂化装置掺炼部分焦化蜡油多产丙烯具有重要意义。 The catalytic cracking of coker gas oil over ZSM-5 and USY zeolite catalysts was comparatively studied on a microactivity test unit in laboratory. The tests revealed that, although the USY catalysts showed higher conversion of coker gas oil than the ZSM-5 catalysts, the ZSM-5 zeolite could obstruct the large-molecule basic nitrogen compounds of coker gas oil from entering the catalyst pores, thus reducing its susceptibility to poisoning. Meanwhile, the LPG yield was up to 23.6% and the propylene yield was above 10% under the lower conversion. All these indicates that ZMS-5 catalyst plays an important role in maximizing propylene production in catalytic cracking of coker gas oil.
出处 《炼油技术与工程》 CAS 北大核心 2007年第1期12-16,共5页 Petroleum Refinery Engineering
关键词 焦化蜡油 催化裂化 碱性氮化物 ZSM-5沸石 裂化催化剂 裂化性能 丙烯 coker gas oil, catalytic cracking, basic nitrogen compounds, ZSM-5 zeolite, cracking catalyst, cracking performance, propylene
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