废溶剂油分离研究.pdfVIP

2010全国精馏技术与塔件设备优化新技术、新工艺研讨会 废溶剂油分离研究 李长海李跃金 (滨州学院，山东滨州，256600) 摘要：研究采用新型间歇精馏塔从工业废溶剂油中分离二甲苯和醋酸丁酯。对预处理后的原 料进行了间歇精馏工艺实验研究，考察了分离温度、回流比等参数对分离过程的影响，并将新塔的分 离情况和未改造前塔的分离情况进行了对比，结果表明，塔顶温度从110℃一115℃之间。新塔醋酸 丁酯的含量为89％左右，原塔含量为72．88％．塔顶温度在120℃以上时，新塔二甲苯含量为99％，原塔 为94．42％，二者含量均好于原精馏塔分离效果。回流比R=3时醋酸丁酯和二甲苯含量均较低，R=4、 5、6时二甲苯和醋酸丁酯的含量接近。 关键词：间歇精馏；二甲苯；醋酸丁酯 on the oi1 Studyseparatingspent LI LI in Chang—’haiYuej (Binzhou 256600) University，Binzhou Abstract：Theresearchof and fromindustrial dimethylbenzenebutylacetate spent solventoilbatchdistillationwas conductedtheresearchwhichthebatch by studied，and distillationwas material．Theeffectsof experimentbypretreated separationtemperature andrefluxratioon were thenewtowerwith separationefficiencyinvestigated，andcompared theoldone．The resultsshowedthatthebatchdistillation experimental toptemperature wasfrom110℃tol15℃．The ofnewtowerwhosecontentwas oldwas butylacetate 89％，the was 120℃．The ofnew 72．88％．The above towerwhosecontent toptemperature dimethylbenzene was oldwas94．42％．Whenthe contentof and 99％，the R=3，the dimethylbenzenebutylacetate werelower．WhentheR=4、5、 contentof and were 6，the dimethylbenzenebutylacetate approaching．