【摘要】 煤制乙二醇工艺过程是重要的煤化工过程,目前对其的研究都未涉及到工艺参数的优化。本文采用Aspen Plus软件,结合煤制乙二醇工艺过程中亚硝酸甲酯合成反应精馏的特点,选用合适的反应动力学模型,对亚硝酸甲酯的反应精馏塔进行模拟。利用灵敏度分析模块,考察了全塔理论板数,进料位置和回流比等对塔顶亚硝酸甲酯质量流率的影响。研究发现全塔理论板数为41块、气相进料和液相甲醇最佳进料塔板位置分别为第35块和第1块、质量回流比为0.156时,得到的塔顶亚硝酸甲酯的质量流率比较高,该值与设计值误差为1.9%。本文的研究结果将为工业生产提供重要的参考。更多还原

【Abstract】 The process of taking coal as raw material to produce ethylene glycol is an important coal chemical process.At present the research didn’t involve the optimization of process parameters.In this paper,using the process simulation software Aspen Plus,combined with the characteristics of methyl nitrous synthesis reactive distillation in the process of taking coal as raw material to produce ethylene glycol,chose appropriate reaction kinetics model,make simulation to the methyl nitrite reactive distillation.Using Aspen sensitivity model,examined the sensibility effects of the theoretical plate number,feed position,and reflux ratio to the distillate methyl nitrite mass flow.The study found that the theoretical plate number is 41,the feed position of gas flow and liquid flow respectively is 34 and 1,mass reflux ratio is 0.156,the methyl nitrite mass flow in the tower top is quite high.Under the optimal condition,the error of the distillate methyl nitrite mass flow and actual operation parameters is 1.9%.The simulation results prove reliable,which can provide a significant reference for industrial applications.更多还原