Simulation and optimization of natural gas to ethylene glycol process
In order to improve the purity of ethylene glycol(EG)by synthesis process and reduce energy consumption,the refining section of the EG process was simulated and optimized using Aspen Plus simulation software.The results showed that:(1)using the next tower(DWC)instead of the conventional double coboiling distillation column for the binary system of ethylene glycol and butanediol(BD),the best process parameters of the next tower were obtained as follows:the raw material feed position of plate 25,the zeolizer feed position of plate 6,and the reflux ratio of 5.(2)Under the best process parameters of the next tower,the purity of EG prepared by azeotropic distillation of the next tower is the same as that of the double azeotropic distillation tower,both of which are 99.91%,the separation effect with a better,and the energy consumption can be reduced by 44.1%.The improvement of the natural gas to ethylend glycol production process through the next tower can ensure the purity and yield of the target product EG,and reduce the energy consumption.
natural gas to ethylene glycolEG refining sectionsimulation and optimizationnext door towerprocess parameters
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