双隔壁反应精馏塔的设计与控制  

Design and control of a reactive double dividing-wall distillation column (R-DDWDC)

作　　者：张铁权 臧立静 黄克谨[1] 陈海胜[1] 苑杨[1] 钱行 ZHANG Tie-quan;ZANG Li-jing;HUANG Ke-jin;CHEN Hai-sheng;YUAN Yang;QIAN Xing(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》2022年第3期221-226,共6页Modern Chemical Industry

基　　金：国家自然科学基金项目(21676011)。

摘　　要：以1个反应精馏塔串接2个常规精馏塔的多塔流程为基础,通过过程强化设计了一种双隔壁反应精馏塔(R-DDWDC),左隔壁集成反应操作和分离操作,右隔壁集成2个常规分离操作,二者的有效协作能够显著降低过程的设备投资成本和操作能耗。在稳态设计的基础上,提出了一种R-DDWDC的5点温度控制策略。该温度控制策略能够抑制较大的进料流量和浓度干扰,且具有很小的稳态误差。研究结果验证了采用R-DDWDC可分离具有最不利热力学特性和不利动力学特性的四元反应物系。A reactive double dividing-wall distillation column(R-DDWDC) is derived through the intensification of a multi-unit system involving in a reactive distillation column followed by two conventional distillation columns.While the left dividing-wall integrates the reaction operation and separation operation involved, and the right one integrates two conventional separation operations involved.The effective collaboration between two walls can secure potentially a considerable reduction in capital investment and operating cost.For the R-DDWDC,a five-point temperature control strategy is developed on the basis of steady state design, which can reject large disturbances from feed flow rate and feed concentration, and has small steady-state errors.These outcomes highlight that the R-DDWDC can be potentially a competitive option for the separations of quaternary reactive mixtures with the most unfavorable thermodynamic properties and unfavorable reaction kinetics.

关 键 词：双隔壁反应精馏塔 低转化率 低选择性 过程设计 过程控制 

分 类 号：TQ021.8[化学工程]