比较双进料和双侧线采出策略对隔壁塔操作与控制的影响  

Comparing the influences of double feeds and double-side streams on the operation and control of the dividing wall columns

作　　者：熊小然 吴晨露[1] 马超[1] 郝阳洋 XIONG Xiao-ran WU Chen-lu MA Chao HAO Yang-yang(College of Information Science and Technology, Beijing University of Chemical Technology, Beijing 100029, China)

机构地区：[1]北京化工大学信息科学与技术学院,北京100029

出　　处：《现代化工》2017年第1期184-187,共4页Modern Chemical Industry

摘　　要：针对3种常见的隔壁塔控制结构,即3点控制结构、控侧线产品不纯物比例的4点控制结构和控预分馏塔顶部重组分纯度的4点控制结构,分别从开环分析和闭环分析2方面比较了双进料和双侧线采出策略对隔壁塔操作与控制的影响。结果显示,在3种控制结构下,双侧线采出策略均更有利于隔壁塔的操作与控制。Three kinds of dividing wall columns （DWCs） are introduced, including the three-point control structure, the four-point control structure with controlling the ratio between the two impurities in the intermediate product and the four-point control structure with controlling the purity of heavy component on the top of the prefractionator. Openloop analysisand close-loop analysis are carried out to compare the influences of double feeds and double-side streams strategies on the operation and control of the DWCs. The results show that double-side stream strategy is more conducive to the operation and controlof DWCs.

关 键 词：隔离壁精馏塔 双进料 双侧线采出 过程控制 

分 类 号：TQ028.3[化学工程]