一种外部热耦合反应蒸馏系统的模拟研究

根据常规反应蒸馏塔的热力学特性提出并研究了一种外部热耦合反应蒸馏系统（EHIRDS）。EHIRDS由一个高压的反应塔和一个低压的分离塔组成，且前者的精馏段与后者的提馏段进行热交换。引入四元理想放热反应体系A + B ? C + D，并以年总费用（TAC）最小为目标函数，对EHIRDS进行了研究，发现EHIRDS能够降低操作费用。采用三个换热器简化EHIRDS的设计（即S-EHIRDS）还可以进一步降低设备投资和操作费用。这些仿真结果初步确认了EHIRDS相比于常规设计具有更高的优越性。

A simulation-based study of externally heat-integrated reactive distillation system

In terms of the thermodynamic characteristics of conventional reactive distillation columns,an externally heat-integrated reactive distillation system(EHIRDS)was proposed and studied.It was comprised of a high-pressure reactive column and a low-pressure separation column,with external heat integration between the rectifying section of the former and the stripping section of the latter.A hypothetical quaternary ideal exothermic reaction was chosen to evaluate the EHIRDS with an objective function of minimization of total annual cost(TAC),and reduction in operating cost was achieved.The simplification of the EHIRDS with three heat exchangers(S-EHIRDS)could lead to a further reduction in capital investment and operating cost.These simulation results confirmed preliminarily the great potentials of the EHIRDS.