差压热耦合精馏分离甲基环戊烷/苯过程的动态性能研究  

Study on dynamic characteristics of pressure-swing thermally coupled distillation in separation of methyl-cyclopentane/benzene mixture

作　　者：张吕鸿[1] 刘建宾[1] 高鑫[1,2] 姜斌[1,2] 李洪[1,2] 

机构地区：[1]天津大学化工学院,天津300072 [2]天津大学精馏技术国家工程研究中心,天津300072

出　　处：《现代化工》2012年第11期97-100,102,共5页Modern Chemical Industry

基　　金：国家"973"项目(2009CB219905);长江学者和创新团队发展计划资助(IRT0936);国家科技支撑计划资助(2011BAE03B07)

摘　　要：以环戊烷/苯二元物系为例,采用动态模拟软件Aspen Plus Dynamics,对差压热耦合精馏的动态控制性能进行研究与分析。根据其工艺流程特点与分离操作要求建立了一种合理的控制方案。同时,对进料的流量、温度和组成扰动进行分析,考察塔顶、塔釜产品组成和流量等对进料扰动的闭环响应特性,分析该控制方案下差压热耦合精馏工艺对不同干扰因素的抗干扰性能和动态稳定特性。结果显示,该流程动态可控性强,各指标均能在干扰施加后较短时间内达到稳定,对各项干扰的稳定性能良好。To study the dynamic characteristics of PSTC distillation separating methyl-cyclopentane/benzene mixture, Aspen Plus Dynamics is used. A reasonable control system is built based on the process features, operation conditions and specifications. The upsets of feed flowrate, temperature and compositions are analyzed. The influence of products compositions and flowrates on the closed-loop dynamic responses to the upsets is studied. The dynamic stability and anti-upsets characteristics of PSTC distillation are studied as well. The results show that PSTC distillation has good dynamic controllability and resistance to interference. It indicates that this control system has good performance in dynamic characteristics.

关 键 词：差压热耦合 动态模拟 动态控制 精馏 甲基环戊烷 苯 

分 类 号：TQ028.4[化学工程]