以炼厂气体分馏装置丙烯精馏为例，利用Aspen Plus建立差压热耦合精馏稳态模拟，在此基础上运用Aspen Dynamics对RR-BR控制方案和D-B控制方案的动态特性进行研究，并与常规精馏进行比较。结果表明，该系统没有因为热耦技术的引入而使其对抗进料量和组成干扰的动态性能变差，RR-BR控制方案控制质量要优于D-B控制方案，主换热器的换热负荷和换热面积是差压热耦合精馏系统关键。

Taking the propylene distillation in gas fractionation facility of refinery as example,a steady-state simulation of differential pressure thermally coupled distillation is built up by using Aspen Plus.Based on the steady-state simulation,the dynamic characteristics of the RR-BR control and D-B control schemes are studied by using Aspen Dynamics,and are compared with conventional distillation.It is found that the dynamic performances resisting the disturbances of the feed flow rate and composition do not get weak with addition of the thermally coupled system.The control quality by RR-BR control scheme is better than that by D-B control scheme.The heat transfer load and area of the main heat exchanger are the key factors for differential pressure thermally coupled distillation.

赵建章(1982-),男,硕士生,讲师,研究方向为过程模拟、优化及控制,543921397@qq.com