甲醇原料罐液位自动控制装置的研制与应用  

Development and Application of Automatic Control Device for Methanol Intermediate Tank

作　　者：尚宇 曹建[2] 刘季[2] Shang Yu;Cao Jian;Liu Ji(College of System Engineering,National University of Defense Technology,Changsha 410073;Beijing Institute of Aerospace Testing Technology,Beijing 100074)

机构地区：[1]国防科技大学系统工程学院,湖南长沙410073 [2]北京航天试验技术研究所,北京100074

出　　处：《石化技术》2020年第4期10-11,共2页Petrochemical Industry Technology

基　　金：北京市科技计划课题,项目编号:Z181100005118004

摘　　要：某套化工连续生产线以甲醇为主要原料,开车运行期间需要保持生产线中甲醇原料罐的液位满足计量泵入口要求。现新建了一套甲醇原料罐液位自动控制装置,基于西门子S7-200系列PLC,利用闭环反馈控制,根据实际生产情况,自动完成甲醇的间歇性补加,提高了生产效率,减少了故障隐患。A set of chemical engineering continuous production line used methanol as the main raw material. During the operation of the production line,it was necessary to keep the methanol intermediate tank level to meet the metering pump inlet requirements. Now,a set of automatic control device for methanol intermediate tank level was built. Based on Siemens S7-200 series PLC,the closed-loop feedback control was used to automatically complete the intermittent replenishment of methanol according to the actual production situation,which improved the production efficiency and reduced the hidden trouble.

关 键 词：甲醇液位 可编程控制器 自动控制 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置] TQ223.121[自动化与计算机技术—控制科学与工程] TQ053.2[化学工程—有机化工]