SEB-12低苯烯比稀乙烯制乙苯催化剂工业应用的经济性分析

The Economic Analysis of Industrial Application of SEB-12 Catalyst for the Alkylation of Benzene with Ethylene at Low Benzene/Ethylene Ratio

SEB-08催化剂对催化苯和稀乙烯烷基化制乙苯具有活性和乙基选择性高、产品中二甲苯含量低和再生周期长等优点.为了进一步节能降耗,中石化上海石油化工研究院研发了适合在低苯烯比条件下运行的SEB-12催化剂.本文介绍了SEB-12催化剂的工业应用试验情况,特别是对其经济性进行分析.结果表明,SEB-12催化剂在将苯烯比从6.0~7.0降至5.0~5.2后,仍保持高乙烯转化率、乙基选择性和长再生周期.使用SEB-12催化剂后,生产每吨乙苯所需的燃气使用量平均可降低0.013 t,折合每吨乙苯的成本降低65元,累积年降低成本549.2万元.

SEB-08 catalyst for the alkylation of benzene with dilute ethylene exhibited high conversion of ethylene,selectivity to ethyl,low xylene in product and long regeneration recycle.In order to further save energy and reduce consumption,Shanghai Research Institute of Petrochemical Technology had developed SEB-12 catalyst,which was suitable for working in low molar ratio of benzene to ethylene.In this work,the industrial application experiment was introduced,especially the analysis of its economy.The results showed that SEB-12 catalyst still maintained high conversion of ethylene,selectivity to ethyl and long regeneration cycle after the molar ratio of benzene to ethylene reduced from 6.0-7.0 to 5.0-5.2.By using SEB-12 catalyst,the gas consumption required for the production of ethylbenzene per ton could be reduced by 0.013 tons on average,the cost of ethylbenzene per ton could be reduced by RMB 65 Yuan,and the cumulative annual cost could be reduced by RMB 5.492 million Yuan.