焦化粗苯加氢精制萃取精馏工艺的改进与模拟  

Optimization and simulation of the extractive distillation process of coking crude benzol hydro-refining

作　　者：李春利[1] 宋博[1] 方静[1] 宋志英[1] 范喜频[1] 

机构地区：[1]河北工业大学化学工程研究所,天津300130

出　　处：《现代化工》2007年第S2期437-439,442,共4页Modern Chemical Industry

摘　　要：对以NFM为溶剂的Morphylane萃取精馏工艺进行优化,将原工艺中萃取精馏塔和溶剂回收塔合并为一塔,应用PRO/II软件对优化后的新塔进行模拟计算,考察了理论板数、溶剂比、进料位置、溶剂温度等因素对分离效果的影响,确定了较优的操作条件。与原工艺相比,萃取精馏塔理论板数减少5块,塔釜再沸器能耗减少4.29%,塔顶冷凝器负荷减少24.43%,塔顶非芳烃中的芳烃含量降低了14.95%。The extractive column and solvent recovery column in original Morphylane extractive distillation process,which used N-formylmorpholine as solvent were combined.By studying the effect of theoretical plate numbers,solvent ratio,feed stage,and temperature of solvent on product recovery ratio with PRO/II software,optimum operating parameters for the new extractive column were obtained.Comparing with the original extractive distillation process,theoretical plate numbers were reduced 5,heat duty of reboiler was saved 4.29%,refrigeration duty of condenser was saved 24.4%.

关 键 词：焦化粗苯 N-甲酰吗啉 萃取精馏 模拟 优化 

分 类 号：TQ522[化学工程—煤化学工程]