基于 Aspen Plus 连续萃取精馏过程概念设计及优化

摘要

基于Aspen Plus软件，以正庚烷-甲苯-苯酚体系为例，概念设计和优化连续萃取精馏过程。在满足产品正庚烷摩尔分数0.995以上条件下，设计和优化结果为：理论板数为30，原料进料第23板，萃取剂进料第9板，回流比6.5，溶剂比2.2，在此优化条件下，产品正庚烷摩尔分数达到0.998。设计结果可为工业化设计提供理论依据和设计参考。%Concept design and optimization for continuous extractive distillation was executed with N -heptane -toluene-phenol system as example by Aspen Plus software.Aimed at the n-heptane mole fraction of above 0.995 in the products , the results of design and optimization showed that parameters of extractive distillation were the number of theory plates of the whole tower 30, the mixture feed at 23rd plate, the solvent feed at 9th plate, reflux ratio 6.5 and the solvent ratio 2.2.Under the conditions , the n -heptane mole fraction reached 0.998.The results of concept design and optimization would provide a theory basis and design reference for the industrial design.