维纶生产中聚合物与单体分离的精馏技术  

Distillation Technology for Separation of Monomer and Polymer in PVA Fiber Production

作　　者：李群生[1] 于丹[1] 张武龙[1] 翟佳秀 徐凌云[2] 黄荣海[2] 

机构地区：[1]北京化工大学化学工程学院,北京100029 [2]安徽皖维高新材料股份有限公司,安徽巢湖238002

出　　处：《合成纤维》2014年第7期8-11,共4页Synthetic Fiber in China

摘　　要：利用计算机模拟与高效导向筛板塔对维纶生产中聚合物脱单体精馏塔进行技术改造,解决了高黏度物料在精馏过程中存在的液泛、堵塔及雾沫夹带等问题,塔釜的醋酸乙烯单体质量分数由原来的0.26%降到0.03%,吹出率达到99.85%;精馏过程中的回流比由1.3降至0.7,节能45%;技改后年增经济效益超过638万,改造投资回收期小于2个月。此技术可以广泛应用于化纤行业,以解决实际生产问题。The technical modification is made on polymer distillation column of polyvinyl alcohol （PVA） fiber by using computer simulation and high efficient flow guide sieve tray. As the result, the difficulty of the distillation of high viscosity material and problems Of liquid flooding and block are solved, the VAc content in the reaction kettle is decreased from 0.26 % to 0.03 %, the return ratio is cut down from 1.3 to 0.7 and energy saving is reached to 45 %. After technical modification, the profit is over RMB 6.36 million and in- vestment return back is within 2 months. The technology can be widely used in chemical fiber industry and solved practical problems in production.

关 键 词：精馏 高效导向筛板 高黏度物料 能耗 

分 类 号：TQ342[化学工程—化纤工业]