含氰工业废盐中杂质的高温氧化脱除实验研究  

Experimental study on high temperature oxidation removal of impurities in cyanide-contained industrial waste salts

作　　者：姜海超[1] 申银山 陈晓飞 刘玉敏[1] 张向京[1] 程丽华 胡永琪[1] Jiang Haichao;Shen Yinshan;Chen Xiaofei;Liu Yumin;Zhang Xiangjing;Cheng Lihua;Hu Yongqi(Hebei University of Science and Technology,Shijiangzhuang 050018,China;Hebei Chengxin Co.,Ltd.)

机构地区：[1]河北科技大学,河北石家庄050018 [2]河北诚信有限责任公司

出　　处：《无机盐工业》2020年第2期62-64,90,共4页Inorganic Chemicals Industry

摘　　要：在氰乙酸和三聚氯氰等产品生产的同时副产大量的含氰氯化钠废盐,这些工业废盐含有氰化物和有机物等杂质,需精制后才能回收再利用。采用流化床高温氧化方法对含氰工业废盐中有氰化物和有机物的杂质做脱除实验研究。实验结果表明,温度在700℃以上、停留时间为3 min时,经高温流化氧化处理后工业废盐中的总有机碳(TOC)、无机铵和总铵可达到离子膜烧碱用原料盐标准;处理后的工业盐中未检测到氰。该研究为含氰工业废盐精制过程和装置的进一步放大提供了实验依据。In the production of cyanoacetic acid and cyanuric chloride,a large amount of cyanide-contained industrial waste salt is produced as a by-product.The industrial waste salt needs to be further refined to be recycled due to the highly toxic cyanide and other organic impurities.High temperature oxidation method was employed to remove the impurities in the industrial waste salt with experimental fluidized bed.The results showed that the TOC,inorganic ammonium and total ammonium in the industrial waste salt can reach the standard of raw material salt for ionic membrane caustic soda after high temperature oxidation treated in the fluidized bed at above 700 ℃ for 3 min,and there was no cyanide detected.This study provides an experimental basis for the scale up of the cyanide industrial waste salt refining process and apparatus.

关 键 词：氰 工业废盐 精制 流化床 

分 类 号：TQ124.42[化学工程—无机化工]