650kt/a乙苯成套技术的工业应用

摘要

The industrial application of 650 kt/a ethylbenzene complete technology developed by Research Institute of Petroleum Processing has been conducted on PO/SM plant in Ningbo ZRCC LYONDELL Chemical Company.The results show that both alkylation catalyst and transalkylation catalyst display its good activity and stability when the ratio of benzene to ethylene and benzene to diethylbenzene are 3.1 and 8.0,respectively.In alkylation reaction,the ethylene conversion is 100％,the average ethylbenzene selectivity is 86.1％,and the average ethylation is high up to 99.5 ％.In transalkylation reaction,the average diethylbenzene conversion is 75.9％ and the average ethylbenzene selectivity reaches to 99.5％.The process flow and equipment design are both successful,and the consumption of energy and material are reduced.The quality of ethylbenzene can meet the requirement of PO/SM plant for a long-term stable running.%介绍中国石化石油化工科学研究院开发的苯和乙烯液相分子筛烷基化工艺技术在宁波镇海炼化利安德化学有限公司650 kt/a乙苯装置上的工业应用情况.工业应用结果表明:在苯与乙烯摩尔比为3.1、苯与二乙苯摩尔比为8.0的条件下,烷基化和烷基转移催化剂均具有良好的活性和稳定性,烷基化反应的乙烯转化率为100％,乙苯选择性平均在86.1％,乙基化选择性平均为99.5％；烷基转移反应的二乙苯转化率平均在75.9％,乙苯选择性平均为99.5％；该技术能耗、物耗低,乙苯产品质量高,能够满足环氧丙烷/苯乙烯装置长周期稳定运转的原料需求,说明工艺流程及设备设计合理.