CAJ | 학술논문

利用化工流程模拟软件，选用 Wilson 模型作为气液平衡的计算模型，对萃取精馏分离乙醇-甲苯共沸物的过程进行模拟研究。考察不同溶剂对乙醇-甲苯相对挥发度的影响，筛选出适宜的溶剂为正丙苯。对溶剂和原料的进料位置、溶剂比、回流比和溶剂进料温度对萃取精馏效果的影响进行了模拟分析。在保证产品乙醇、甲苯质量分数均在0.998以上的条件下，萃取精馏塔模拟优化结果为：全塔总理论板数35块，溶剂进料位置第16块塔板、原料进料位置第32块塔板、溶剂比1.2、回流比1.6、溶剂进料温度为常温。模拟结果可用于指导实际过程分析和设计。
이용화공류정모의연건，선용 Wilson 모형작위기액평형적계산모형，대췌취정류분리을순-갑분공비물적과정진행모의연구。고찰불동용제대을순-갑분상대휘발도적영향，사선출괄의적용제위정병분。대용제화원료적진료위치、용제비、회류비화용제진료온도대췌취정류효과적영향진행료모의분석。재보증산품을순、갑분질량분수균재0.998이상적조건하，췌취정류탑모의우화결과위：전탑총이론판수35괴，용제진료위치제16괴탑판、원료진료위치제32괴탑판、용제비1.2、회류비1.6、용제진료온도위상온。모의결과가용우지도실제과정분석화설계。
An extractive distillation process with two columns and n-propylbenzene as the extractant for separating ethanol-toluene mixture was simulated by using process simulation software and Wilson model. After the different solvents were investigated the influence of ethanol-toluene relative volatility, selecting the suitable solvent for n-propylbenzene. The effects of feed-positions of the solvent and mixture, reflux ratio, solvent ratio and the solvent feed-temperature on the extractive distillation were studied. The optimum process parameters were obtained. Aimed at mass fraction of ethanol and toluene was above 0.998 in the products, the optimum process parameters were obtained, as follows solvent feeding position 16, ethanol and toluene mixture feeding-position 32, solvent ratio 1.2, reflux ratio 1.6 and the solvent feed-temperature about 30 °C. The simulation results may be used to guide analysis and design of actual industrial plant.