摘要
本研究提出一项新的工艺技术，它是以ＮＨ＿４ＣＮＳ－（ＮＨ＿４）＿２Ｓ＿２Ｏ＿３－Ｈ＿２Ｏ三元水盐系相图为理论基础，采用结晶法从Ｆ．Ｒ．脱硫脱氰废液中回收硫氰酸铵。本文介绍了其工艺流程和工艺参数，硫氰酸铵产品的纯度可达９５．０％～９９．５％。其总收率达６０％以上。
This paper deals with a study on a new technology that Ammonium thiocyanate was recovered from F.R. desulfuration and decyanation waste liguor by a crystallization method accoding to the NH_4CNS-(NH_4)_2S_2O_3-H_2O System phase aiagram theory,The technological process and feature parameters used in the Study are reported.The effects of test on operating conditions are also discussed. The NH_4CNS obtained is 95%～99.5%pure and the tolal yield is above 60%.
出处
《煤化工》
CAS
1994年第3期28-34,共7页
Coal Chemical Industry
关键词
硫氰酸铵
脱硫
脱氰
废水处理
炼焦
ammonium thiocyanate crystallization recovery desulfuration and de-cyanation waste liguor
