乙炔加氢反应器全周期操作优化  

Full-cycle operation optimization of acetylene hydrogenation reactor

作　　者：谢府命 许锋[1] 梁志珊[1] 罗雄麟[1] 石凤勇 XIE Fuming;XU Feng;LIANG Zhishan;LUO Xionglin;SHI Fengyong(Department of Automation, China University of Petroleum, Beijing 102249, China;CNPC North China Petrochemical,Renqiu 062552, Hebei, China)

机构地区：[1]中国石油大学(北京)自动化系,北京102249 [2]中国石油华北石化公司,河北任丘062552

出　　处：《化工学报》2018年第3期1081-1091,共11页CIESC Journal

基　　金：国家自然科学基金项目(21676295)~~

摘　　要：乙炔加氢反应器作为乙烯工业流程的重要环节,其运行会很大程度上影响到乙烯产品的产量和纯度。在一个运行周期内,乙炔加氢反应器内催化剂活性会随时间推移而缓慢降低,使操作点偏移,乙烯产量会随之降低。为了实现全周期操作优化,通过研究催化剂的失活机理,提出了考虑绿油累积效果的催化剂失活动力学模型,进而改进了乙炔加氢反应器二维非均相模型。通过在g PROMS平台模拟反应器全周期运行验证了改进模型的正确性,在上层运用Matlab优化器与g PROMS平台交互求解一个运行周期的操作优化问题。优化结果表明,与定值温度补偿方案相比,全周期操作优化在经济效益和反应器再生周期两方面都要优于定值温度补偿方案,且同时优化入口温度与入口加氢量的全周期操作优化方案具有更大的优势。Acetylene hydrogenation reactor is an important unit operation in ethylene process,whose operationdeeply influences yield and purity of ethylene product.Within an operating cycle,the catalyst activity in reactorgradually declines with time,the operating point will slowly deviates from the initial steady-state design point suchthat the ethylene yield will drop.To implement the full-cycle operation optimization,the kinetics model of catalystdeactivation considering green oil accumulation is presented through deactivation mechanism research,then a twodimensionalheterogeneous dynamic model of acetylene hydrogenation reactor with modified catalyst deactivationequation is proposed.The full-cycle simulation on gPROMS software verifies the correctness of modifiedmodel,and the full-cycle operation optimization is solved by Matlab optimizer on upper layer interacting withgPROMS simulation.The optimization results show that,the full-cycle operation optimization is superior tothe fixed value temperature compensation in regard to both the economic benefit and the regeneration cycle ofreactor,and the full-cycle operation optimization simultaneously optimizing inlet temperature and hydrogen input is of greater advantage

关 键 词：过程系统 操作优化 过程控制 乙炔加氢 催化剂失活模型 

分 类 号：TQ021.8[化学工程]