炼厂气膜分离氢回收装置的控制  

CONTROL OF MEMBRANE SEPARATION PROCESS FOR HYDROGEN RECOVERY FROM REFINERY GAS

作　　者：王磊[1] 邵诚[1] 王海[2] 

机构地区：[1]大连理工大学先进控制技术研究所,辽宁省大连市116024 [2]中国科学院大连化学物理研究所,辽宁省大连市116023

出　　处：《炼油技术与工程》2007年第1期44-47,共4页Petroleum Refinery Engineering

基　　金：国家"十五"科技攻关计划项目"先进控制与优化软件及综合自动化软件平台产业化关键技术"(2001BA204B01);"辽宁省工业装备先进控制系统重点实验室"基金的支持。

摘　　要：介绍了膜分离技术在炼厂气氢回收中应用的工艺流程及控制要求,设计了基于DCS／FSC的控制系统。膜分离装置采用了TBM中低压膜,并首次使用了两段分离设计,公称处理量达11 000 m3／h,操作弹性为30％- 130％,设计年开工时间为8-400 h,可产氢气6 798 m3／h,其中氢气体积分数大于91％,氢气回收率大于85％。膜分离装置的基本控制回路主要包括水冷器出口温度、旋风分离器液位、原料气入膜压力及一段、二段渗透气压力、操作温度等。通过在镇海炼油化工股份有限公司的应用证明,该工艺流程设计合理,控制系统安全可靠,整套系统取得了较高的经济效益。The process flow and process control requirements of membrane separation for hydrogen recovery from refinery gas are described. The control systems based on DCS and FSC were designed. Two-stage membrane separation unit of TBM medium-low pressure modules is installed to process the gas stream at a capacity of 11,000 Nm^3/h with a turndown ratio of 30% -130%. The design on-stream time is 8,400 h/yr, hydrogen production is 6,798 Nm^3/h with H2 purity greater than 91% and H： recovery rate higher than 85%. The basic control loops of the unit include water cooler outlet temperature, cyclone separator level, feed gas pressure, permeation gas pressures and operating temperatures of 1st and 2nd-stages. The successful application in Zhenhai Refining and Chemical Co. , Ltd. has approved that the process design is optimized, the control systems are safe and reliable and economic benefits are significant.

关 键 词：气体膜分离 低压氢回收 DCS FSC 炼厂气 制氢 加氨裂化 

分 类 号：TE966[石油与天然气工程—石油机械设备]