陶瓷膜用于硫化碱液纯化除杂研究

Purification of vulcanized alkali liquor by ceramic membrane technology

采用陶瓷膜对硫化碱液进行纯化除杂研究,分析了膜通量随运行时间的衰减变化趋势,确定了恢复膜通量的方法,并比较了2种陶瓷膜管的不同分离效果.结果表明,50 nm陶瓷膜能有效截留硫化碱液中的杂质,过滤硫化碱液时平均通量达到330～ 340 L/（m2 ·h）,碱回收率99％以上,清液ss低于6 mg/L,满足生产需要,提高了产品品质.

The purification of vulcanized alkali liquor is performed by ceramic membrane technology. The attenuation trend of membrane flux over time is obtained. The membrane flux recovery method is determined. The separation effects of different membrane tubes are compared. Experimental results show that 50 nm ceramic membrane can effectively get rid of impurities in alkaline solution. The average flux is 330 -340 L/（m2·h）. After ceramic membrane technology, the recovery rate of alkali is more than 99% and suspended solids of liquor are below 6 mg/L. It can meet the requirement of production and improve quality of products.