乙醇脱水制乙烯工艺流程模拟研究  

Simulation research on Ethanol dehydration to ethylene process

作　　者：马丽丽[1] 沈伟[1] 胡松[1] 杨卫胜[1] 

机构地区：[1]中国石油化工股份有限公司上海石油化工研究院,上海201208

出　　处：《计算机与应用化学》2016年第5期563-568,共6页Computers and Applied Chemistry

摘　　要：本文开发了一种乙醇脱水制乙烯工艺。为降低装置能耗,提高乙烯回收率,乙烯精制单元采用由脱重塔和脱轻塔组成的双塔分离工艺,以避免使用高能耗的深冷分离设备。本文运用PRO/II流程模拟软件建立了乙醇脱水制乙烯全流程工艺模型,通过研究乙烯精馏单元精馏塔的理论塔板数、进料位置、回流比等参数对乙烯分离效果的影响,确定了较优的工艺操作条件;通过全流程模拟计算,得到全装置总体物料平衡,乙烯产品纯度达到99.98 wt%,乙烯回收率达到99.5%,乙烯精馏部分单位产品能耗为1.03MJ/t。The ethanol dehydration to ethylene process was presented in this paper. With the purpose of reducing energy consumption and increasing ethylene recovery, a double-column separation process which contained de-light component column and de-heavy component column was adopted for the ethylene refining unit to avoid using high energy consumption of cryogenic separation equipment. The whole flowsheet of ethanol dehydration to ethylene process was established in the process simulation software PRO/II. The effect of the process parameters including theoretical stage, feed stage, and reflux ratio et al. on the ethylene refining unit was studied, and the optimal operation conditions were determined. The overall material balance was obtained by the process simulation. The results indicated that the ethylene mass purity and recovery ratio can reach 99.98% and 99.5% respectively, and the energy consumption for per unit product of the ethylene refining unit was 1.03 MJ/t.

关 键 词：乙醇脱水 乙烯 乙烷 流程模拟 节能优化 

分 类 号：TQ015.9[化学工程] TP391.9[自动化与计算机技术—计算机应用技术]