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以乙醇—水常见物系,模拟加盐萃取精馏的双塔连续操作过程,利用PRO/II流程模拟软件的CASE STUDY功能,依次分析原料进料位置、复合萃取剂进料位置、溶剂比、萃取精馏塔回流比等因素对于无水乙醇产品浓度的影响,并找出最优条件:两塔理论板数各为20块,原料进料位置为萃取精馏塔第17块板,复合萃取剂进料位置为第3块板,复合萃取剂中醋酸钾的质量浓度为0.1 g/mL,萃取精馏塔回流比为2.0,溶剂比为1.3。
In the common system of ethanol and water, the double tower continuous operation process simulated by salt extraction and distillation was simulated. By using the CASE STUDY function of PRO / II flow simulation software, the feed position of feed, the feed position of compound extractant, the solvent ratio, Distillation column reflux ratio and other factors on the concentration of ethanol products, and to find the optimal conditions: the number of theoretical plates for each of the two towers of 20, the raw material feed position for the 17th column of the extractive distillation column, composite extraction The feeding position of the agent was the third plate, the concentration of potassium acetate in the composite extractant was 0.1 g / mL, the reflux ratio of the extractive distillation column was 2.0 and the solvent ratio was 1.3.