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-  2018 

煤制乙二醇副产物杂醇油回收工艺的模拟研究

DOI: 10.13543/j.bhxbzr.2018.04.001

Keywords: 乙二醇,甲醇,乙醇,杂醇油,回收,模拟研究,
ethylene glycol
,methanol,ethanol,fusel oil,recovery,simulation and research

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Abstract:

利用Aspen Plus流程模拟软件对煤制乙二醇副产物杂醇油回收工艺进行模拟研究,选用非随机双液体(NRTL)热力学方法对煤制乙二醇副产物杂醇油回收工艺进行了模拟计算,应用灵敏度分析工具分别对甲醇回收塔(T-101)、萃取精馏塔(T-102)、乙二醇回收塔(T-103)的理论板数、进料位置、回流比等参数进行了优化,优化后的参数为:甲醇回收塔塔板数50,回流比3.6,进料位置第20块塔板;萃取精馏塔的塔板数25,回流比2.3,进料位置第14块塔板;乙二醇回收塔的塔板数9,回流比0.24,进料位置第7块塔板。经济效益分析表明,年处理2.4万t杂醇油可为企业带来每年约894.87万元的收益,显著提高企业的市场竞争力。
Abstract:Aspen Plus process simulation software has been used to study the recovery process of the fusel oil by-product ethylene glycol from coal. The NRTL thermodynamic method was used to simulate the recovery process of the fusel oil by-product ethylene glycol. The sensitivity analysis tools were used to simulate and optimize number of theoretical stages, mass reflux ratio, feed position and other parameters of the methanol recovery column (T-101), the extractive distillation column (T-102) and the glycol recovery column (T-103). The optimized design parameters of the methanol recovery column are as follows:number of theoretical plates 50, mass reflux ratio 3.6, the feed position 20. The extractive distillation column design parameters are as follows:number of theoretical plates 25, mass reflux ratio 2.3, feed position 14. The optimized design parameters of the glycol recovery column are as follows:number of theoretical plates 9, mass reflux ratio 0.24, feed position 7. According to an economic analysis, a factory treating 24 000 tons of fusel oil per year according to the optimized process will derive 8.948 7 million yuan in extra revenue each year, and can significantly improve its competitiveness in the market.

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