反应精馏与渗透蒸发膜分离耦合法合成乙基叔丁基醚

CATALYTIC REACTIVE DISTILLATION COUPLED WITH PERVAPORATION FOR SYNTHESIZING ETHYL tert -BUTYL ETHER

以乙醇和叔丁醇为原料 ,通过催化反应、精馏与渗透蒸发膜分离三单元耦合过程合成了乙基叔丁基醚(ETBE) ,建立了相关五元高度非理想体系的耦合过程数学模型 ,以改进的超松弛法对模型求解 。

The synthesis of ETBE from ethanol (EtOH) and tert-butyl alcohol (TBA) was studied by using cation exchange resin as catalyst via reaction, reactive distillation, reaction with pervaporation. Catalytic reactive distillation coupled with pervaporation is restudied for the synthesis of ethyl tert-butyl ether from EtOH and TBA. A mathematical model for this combined process is developed. The model incorporates complex reaction kinetics, vapor-liquid non-idealities, distillation and pervaporation process. The rapid solution for this model can be obtained by modified overrelexation method. Simulation results are in good agreements with the experimental results. Some operating parameters are also optimized.