Simulation and Optimization of Reaction Process on Preparation of Chloromethane Catalyzed by Gas-Liquid Phase
In order to solve the problems in the synthesis of chloromethane and the reduction of by-product hydrochloric acid emissions,Aspen Plus software was used to model the existing process flow,and a single CSTR reactor model was established.Based model modification,parameter optimization and sensitivity analysis were carried out.A dual-reactor in series was pro-posed.By optimizing feed ratio,temperature and others,the optimal process for the dual-reactor in series was obtained.The first reactor is maintained at 160℃,the second reactor at 140℃;the methanol fed into the first reactor accounts for 75％ of the total methanol;the molar ratio of hydrogen chloride to methanol is 0.95.Compared with the original process,the optimized process significantly reduces the flow rate of hydrogen chloride,providing a feasible solution for reducing hydrochloric acid emissions.
chloromethanehydrochloric acidreactorAspen Plus software
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