基于CAPE-OPEN标准的乙苯脱氢反应器模块开发与全流程模拟

DEVELOPMENT OF ETHYLBENZENE DEHYDROGENATION REACTORMODULE BASED ON CAPE-OPEN STANDARD ANDWHOLE PROCESS SIMULATION

基于某乙苯负压绝热脱氢制苯乙烯装置转化率低于设计值的现状,建立了包括小分子水蒸气转化反应在内的乙苯绝热脱氢制苯乙烯反应动力学模型和反应器模型,基于工业数据,估计了模型动力学参数,模型具有较高的精度;采用C++语言和COM技术开发了符合CAPE-OPEN标准的乙苯脱氢制苯乙烯反应器单元模块;在Aspen Plus平台构建了内嵌反应器模块的乙苯脱氢制苯乙烯全流程模型,反应器与精馏塔的模拟结果与实际相吻合;进一步考察了工艺参数对装置运行中期反应的影响,提出了适宜的工艺参数,为乙苯脱氢制苯乙烯的工艺设计、生产优化提供有益的支持。

Based on the fact that the conversion rate of ethylbenzene dehydrogenation unit is lower than design value under vacuum insulation,the chemical kinetic model for adiabatic dehydrogenation of ethylbenzene to styrene including the small molecule steam conversion reactions and a reactor model were established.The kinetic parameters of the model were estimated with the data from an industrial ethylbenzene dehydrogenation unit and their reliability was verified.A reactor module of ethylbenzene dehydrogenation to styrene was developed by C++language and COM technologies according to the CAPE-OPEN standards,and the whole process model of ethylbenzene dehydrogenation to styrene was built on Aspen Plus platform.The simulation results of the reactor and distillation column were in good agreement with actual situation.The influence of the process parameters on the conversion during the operation mid-term of the unit was further investigated,and the suitable process parameters were put forward.It can provide useful support for the process design and production optimization of ethylbenzene dehydrogenation to styrene.