苯乙烯装置反应参数对精馏塔序能耗的影响  

Effects of reaction parameters on energy consumption of distillation sequences for a styrene plant

作　　者：吕东晖 刘桂莲[1] LYU Dong-hui;LIU Gui-lian(School of Chemical Engineering and Technology, Xi’an Jiaotong University,Xi'an 710049, China)

机构地区：[1]西安交通大学化学工程与技术学院

出　　处：《高校化学工程学报》2019年第3期594-602,共9页Journal of Chemical Engineering of Chinese Universities

基　　金：国家自然科学基金(U1662126,21476180)

摘　　要：分离多组分混合物的不同精馏塔序能耗不同,且受上游反应器操作的影响。构建以反应进度为中间变量的反应参数与精馏塔序通用集成模型,可用于确定任一精馏塔序的总气相负荷与各反应进度的定量关系以及其随各反应参数的变化趋势。通过对苯乙烯装置建模分析,探讨了反应进口温度和催化剂活性对主要反应的反应进度以及 5 种精馏塔序总气相负荷的影响规律。在不同反应进口温度下将各塔序在 Aspen Plus 软件中进行严格流程模拟,所得各塔序能耗与操作费用相对大小与所提出模型的结论一致。The energy consumption of different sequences for separating multicomponent mixtures is different, which is affected by upstream reactors. Quantitative relationship between total vapor rate of each distillation sequence and reaction extent, together with its variation trend along the reaction parameters can be determined by constructing an integrated model of the reaction parameters and distillation sequence with reaction extent as an intermediate variable. Effects of inlet temperature and catalyst activity on the extents of main reactions and the total vapor rate of 5 distillation sequences were discussed through modeling analysis of a styrene unit. All sequences were simulated by the rigorous simulation model of Aspen Plus software at different inlet temperatures. The results show that the energy consumption and the operating cost are consistent with the model prediction.

关 键 词：反应进度 精馏塔序 反应参数 气相负荷 

分 类 号：TQ028.3[化学工程]