This study proposed the design and control system of a hybrid heat-integrated configuration for the diphenyl carbonate (DPC) indirect reactive distillation (RD) process. First, an existing DPC production process with an RD column and a distillation column (C1) as the base case was modified and optimized for further evaluation. Both thermally coupled distillation (TCD) and double-effect (DE) configurations were examined to simultaneously improve the energy efficiency. A hybrid heat-integrated configuration for the DPC indirect RD process was finally proposed. The remixing effect at the top part of the RD column could be removed, and the energy wastage in the condenser of the C1 was lower than that in the TCD configuration. The heat exchanger (HE) area was smaller than that in the DE configuration. Among all configurations, the hybrid configuration was superior; around 34.0 % of energy could be saved for producing 99.5 mol% of DPC. Then, three control structures (CS1, CS2, and CS3) and two inventory control loops (inventories A and B) were proposed in the hybrid heat-integrated configuration. Pressure-compensated temperature (PCT) control was also applied to eliminate the effect of pressure floating. The dynamic simulation results revealed that the CS3 PCT could maintain specifications during throughput and composition disturbances.

这项研究提出了一种用于碳酸二苯酯（DPC）间接反应蒸馏（RD）工艺的混合热集成配置的设计和控制系统。首先，对现有的以RD塔和蒸馏塔（C1）为基础的DPC生产工艺进行了修改和优化，以进行进一步评估。研究了热耦合蒸馏（TCD）和双效（DE）配置，以同时提高能源效率。最终提出了一种用于DPC间接RD工艺的混合热集成配置。可以消除RD塔顶部的再混合作用，并且C1冷凝器中的能量浪费低于TCD配置中的能量浪费。换热器（HE）的面积小于DE配置中的换热器（HE）的面积。在所有配置中，混合动力配置优越；生产99.5 mol％的DPC可以节省约34.0％的能量。然后，在混合热集成配置中，提出了三个控制结构（CS1，CS2和CS3）和两个库存控制回路（库存A和B）。还采用了压力补偿温度（PCT）控制来消除压力浮动的影响。动态仿真结果表明，CS3 PCT可以在通量和成分扰动期间保持规格。还采用了压力补偿温度（PCT）控制来消除压力浮动的影响。动态仿真结果表明，CS3 PCT可以在通量和成分扰动期间保持规格。还采用了压力补偿温度（PCT）控制来消除压力浮动的影响。动态仿真结果表明，CS3 PCT可以在通量和成分扰动期间保持规格。