高活性低水比GS-HA乙苯脱氢催化剂工业应用总结

Summary of industrial application of GS-HA catalyst with high activity and low water ratio for ethylbenzene dehydrogenation

介绍了GS-HA乙苯脱氢催化剂在中国石化海南炼油化工有限公司80 kt/a苯乙烯装置低水比工业试验,分析了低水比运行期间装置的节能效果和产生的经济效益。结果表明:该催化剂的乙苯转化率和苯乙烯选择性保持在64.5%以上和96.4%以上,说明该剂催化性能和稳定性优异,装置综合能耗降低1950.88 MJ/t(以苯乙烯计),节约蒸汽5.21 t/h,苯乙烯产量增加13.4 t/d,创造了良好的经济效益。运行后期平均水比为1.25,乙苯转化率保持在65.4%以上,苯乙烯选择性在96.8%以上,苯乙烯单体收率大于63.4%,反应性能优异,苯乙烯产量稳定,催化剂稳定性好,装置运行周期达到57个月,创国内装置单批催化剂满负荷运行的最长纪录。

The industrial test operation of GS-HA ethylbenzene dehydrogenation catalyst in the 80,000 TPY styrene unit of SINOPEC Hainan Refinery&Chemical Co.,Ltd.with low water ratio is introduced.The energy-saving effect and economic benefits of the unit during the operation with low water ratio are analyzed.The results show that the ethylbenzene conversion and styrene selectivity of the catalyst remain above 64.5%and 96.4%,indicating excellent catalytic performance and stability.The comprehensive energy consumption producing one ton styrene of the unit is reduced by 1,950.88 MJ,steam is saved by 5.21 t/h,and the aver-age styrene increases by 13.4 t/d,creating good economic benefits.In the later stage of operation,with an average water ratio at 1.25,the conversion of ethylbenzene remains above 65.4%,the selectivity of styrene is above 96.8%,the single yield of styrene is more than 63.4%,with excellent reaction performance,and the output of styrene is stable.The stability of the catalyst is outstanding,as it is used for 57 months in total,setting the longest record for a single batch of catalysts running at full load in domestic plants.