盐析-萃取法处理精苯废酸的中试研究  

Pilot-scale study on the purification of waste acid from benzol refining by salting-out extraction process

作　　者：李其祥[1] 毛磊[1] 靳美程[2] 程正载[1] 刘翠霞[2] 史世庄[1] 

机构地区：[1]武汉科技大学煤转化与新型炭材料湖北省重点实验室,湖北武汉430081 [2]武汉平煤武钢联合焦化有限责任公司,湖北武汉430082

出　　处：《武汉科技大学学报》2009年第4期423-426,共4页Journal of Wuhan University of Science and Technology

基　　金：武汉市科技计划资助项目(20066002049)

摘　　要：在中试规模上采用盐析-萃取法处理精苯废酸。结果表明,当物料配比m(废酸)∶m(母液)∶m(粗酚)=1∶0.3∶0.4时,COD的脱除率最高达到95.3%,且萃取剂粗酚可以循环使用,不影响萃取效果;净化酸可再利用生产硫酸铵,其各项质量指标均不低于用新鲜硫酸生产的硫酸铵;萃取剂再生残渣(焦油渣)用于配煤炼焦可改善焦炭质量。The purification of waste acid from benzol refining by salting-out extraction process in a pilot scale reactor was studied. The results show that COD removal rate reaches the highest 95.3% when the material quality ratio is 1：0. 3：0.4; moreover, the crude phenols extractant can be recycled without affecting COD removal efficiency. Purified acid can also be reused to produce ammonium sulfate, whose quality is no less favorable than that produced by fresh sulfuric acid.

关 键 词：精苯废酸 盐析-萃取法 中试 

分 类 号：U414[交通运输工程—道路与铁道工程]