沸石膜用于BDO副产丁醇脱水的中试研究
Pilot study on using zeolite membrane in dehydration of butanol as by-product of BDO
程晋曦 1薛明明 2王建平 1文婷1
作者信息
- 1. 合肥江新化工科技有限公司,安徽 合肥 230601
- 2. 三菱化学(中国)管理有限公司,上海 200030
- 折叠
摘要
为了解决现有1,4-丁二醇(BDO)装置副产丁醇回收的问题,设计了一套沸石膜丁醇脱水中试样机,并进行了中试研究.中试采用循环脱水的操作方式,在丁醇水溶液循环流量为500 kg/h、膜管外侧压力约为0.5 MPaG(表压)、内侧压力约为10 kPaA(绝对压力)的条件下,考察了温度从90℃到130℃时ZEBREXTMZX0和ZEBREXTMZX2两种型号沸石膜的丁醇脱水性能,结果表明,随着操作温度和含水率的升高,沸石膜通量会升高,最佳操作温度为130℃,最大膜通量为12.45 kg/(m2.h);在中试条件下,水与丁醇的分离因子＞3 900,ZX0和ZX2膜都对水和丁醇有较好的分离效果.沸石膜脱水技术在BDO装置副产丁醇回收上的应用是可行的.
Abstract
In order to recover by-product butanol in the existing 1,4-butanediol(BDO)production unit,a set of zeolite membrane butanol-dehydration pilot prototype is designed and used to conduct pilot study.The pilot experiment adopts a circulating dehydration operation method.Under the conditions that the recirculation flow rate of aqueous butanol solution is 500 kg·g-1,the pressure on the outer side of the membrane tube is 0.5 MPa(G),and the pressure on the inner side is 10 kPa(absolute),the performances of ZEBREXTM ZX0 and ZEBREXTM ZX2 zeolite membranes for butanol dehydration are respectively investigated at the temperature ranging from 90℃ to 130℃.It is shown by the results that with the increasing operation temperature and moisture content,the flux of zeolite membrane will increase.The optimal operation temperature is 130℃,delivering a maximum membrane flux of 12.45 kg·m-2·h-1.Under pilot conditions,the separation factor between water and butanol exceeds 3 900,both ZX0 and ZX2 membranes have good separation effects on water and butanol.The zeolite membrane dehydration technology is feasible to be applied on the recovery of by-product butanol from BDO unit.
关键词
沸石膜脱水/膜分离/BDO副产丁醇/丁醇脱水/丁醇回收Key words
zeolite membrane dehydration/membrane separation/butanol as BDO byproduct/butanol dewatering/butanol recovery引用本文复制引用
出版年
2024
NETL
NSTL
万方数据