碳二洗涤塔设计对脱甲烷系统分离工艺影响分析  

INFLUENCE OF CONDENSATING-FRACTIONATING TOWER DESIGN ON SEPARATION PROCESS OF DEMETHANIZER SYSTEM

作　　者：欧阳熠玫 Ouyang Yimei(SINOPEC Engineering Incorporation,Beijing,P.C.100101)

机构地区：[1]中国石化工程建设有限公司,北京100101

出　　处：《乙烯工业》2024年第2期15-17,21,I0001,共5页Ethylene Industry

摘　　要：对中国石化自主开发的低能耗乙烯技术工艺进行了深化研究,分析了装置中碳二洗涤塔设计对脱甲烷塔系统的影响,并对脱甲烷系统进行了模拟优化。结果表明:适当降低碳二洗涤塔的温度可大幅减少乙烯损失,同时提高氢气产品纯度。将碳二洗涤塔塔顶温度控制在约-122℃可使乙烯回收率和氢气纯度处于较高水平,同时将冷量的消耗控制在合理范围。The Low Energy Consumption Technology(LECT)developed by SEI is studied in detail,the influence of condensating-fractionating tower design on demethanizer system is analyzed,and the demethanizer system is simulated and optimized.The results show that properly reducing the temperature of condensating-fractionating tower can greatly reduce the ethylene loss while improving the purity of hydrogen product.Maintaining the overhead temperature of condensating-fractionating tower at about-122℃can ensure relatively high ethylene yield and hydrogen purity and keep the consumption of cooling capacity within a reasonable range.

关 键 词：乙烯分离工艺 碳二洗涤塔 模拟优化 

分 类 号：TQ221.211[化学工程—有机化工]