绿液除硅对苛化工段操作的影响  

Effect of Desilication of Green-Liquor on Causticizing Performance

作　　者：汪苹[1] 潘登[1] 陈宇[1] 魏燕[1] 

机构地区：[1]北京工商大学化学与环境工程学院,北京100037

出　　处：《中国造纸》2003年第11期14-17,共4页China Pulp & Paper

基　　金：中日合作研究项目(KTC00-00071);日本NEDO资助

摘　　要：绿液中硅含量高是影响苛化工段操作的重要因素之一。实验室研究以直接向绿液投加除硅剂进行除硅操作,可获得高达97%的除硅率。在进行未除硅和除硅苛化液澄清以及白泥洗涤过滤等实验后,证实除硅可缩短苛化澄清时间、压缩白泥沉降层,得到的除硅白泥过滤速度明显加快、干度提高。High silicon content of green-liquor is one of the important factors affecting alkaline recovery.The operations of clarification of green-liquor,washing and filtering of lime mud were compared between the green liquor with a desilication rate of97%and the undesili-conized one in the laboratory.The results indicated that desilication could quicken defecation,compress subside layer of lime mud and in-crease the lime mud solid content.

关 键 词：绿液 苛化操作 碱回收 除硅率 麦草浆 造纸黑液 除硅工艺 

分 类 号：X793[环境科学与工程—环境工程]