一种气体混合器调节控制方案及应用  

Adjustment Control Scheme and Application of a Gas Mixer

作　　者：刘伟 Liu Wei(Sinopec(Dalian)Petrochemical Research Institute Co.Ltd.,Dalian,116045,China)

机构地区：[1]中石化(大连)石油化工研究院有限公司,辽宁大连116045

出　　处：《石油化工自动化》2024年第4期16-19,共4页Automation in Petro-chemical Industry

基　　金：辽宁省市场监督管理局科技计划项目:氨/天然气掺混燃烧增效降碳技术研发。

摘　　要：针对聚烯烃装置料仓气中的VOCs废气,采用蓄热氧化装置进行深度处理并实现达标排放。介绍了蓄热氧化装置和废气混合器的工作流程,提出了废气控制阀和混合气总烃分析仪的选型方案,以及混合气浓度控制方案,分析了蓄热氧化装置中仪表易发生故障的原因,给出了该装置气体混合器的优化联锁控制方案。应用优化后的控制方案,能够保证气体在混合前后总烃相等,根据低浓度废气的流量,达到精准控制高浓度废气流量的目的。The heat storage oxidation installation is adopted to treat the VOCs exhaust gas in the silo gas of polyolefin installation in-depth,the emission standard is met.The process of the heat storage oxidation installation and gas mixer are introduced.The type selection scheme of exhaust gas control valve and the total hydrocarbon analyzer,and mixed gas concentration control scheme of the mixed gas are proposed.The reasons of the easily occurred fault for the instrument in the heat storage oxidation installation are investigated.The optimized interlock control scheme of the gas mixer is put forward.The application of the optimized control scheme can ensure the total hydrocarbon is equal before and after gas mixed.The flow of highconcentration exhaust gas cabne accurately controlled according to the flow of lowconcentration exhaust gas.

关 键 词：挥发性有机化合物 蓄热氧化 聚烯烃装置 料仓气 优化联锁 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]