有机胺脱硫吸收液脱除硫代硫酸根工艺  

Process of Removing Thiosulfate from Organic Amine Desulfurization Absorption Liquid

作　　者：文乐 李焕湘 瞿浪宇 朱海 蔡继凤 WEN Le;LI Huan-xiang;QU Lang-yu;ZHU Hai;CAI Ji-feng(Changsha Huashijie Environmental Protection Technology Development Co.,Ltd.,Changsha 410000,China)

机构地区：[1]长沙华时捷环保科技发展股份有限公司,湖南长沙410000

出　　处：《化工管理》2022年第28期164-167,共4页Chemical Engineering Management

摘　　要：冶炼烟气中含有H_(2)S和SO_(2)气体,两种气体进入到有机胺脱硫系统,在酸性条件下生成硫代硫酸根,对脱硫系统的危害极大。采用调节硫酸吸收液pH值,将硫代硫酸根转化为硫单质和SO_(2)气体,硫单质过滤回收,SO_(2)气体送至脱硫系统。吸收液再通过氢氧化钙和氟化氢溶液将吸收液中的硫酸根和钙离子除去,回收有机胺吸收液返回脱硫系统,满足脱硫系统正常运行要求。The smelting flue gas contains H_(2)S and SO_(2) gas,and the two gases enter the organic amine desulfurization system to generate thiosulfate under acidic conditions,which is extremely harmful to the desulfurization system.The pH of the absorption liquid is adjusted by sulfuric acid,the thiosulfate is converted into sulfur and SO_(2) gas,sulfur is f iltered and recovered,and the SO_(2) gas is sent to the desulfurization system.The sulfate and calcium ions in the absorption liquid are removed by calcium hydroxide and hydrogen fluoride solution,and the organic amine absorption liquid is recovered and returned to the desulfurization system to meet the normal operation requirements of the desulfurization system.

关 键 词：脱硫 硫代硫酸根 硫单质 硫化氢 

分 类 号：X75[环境科学与工程—环境工程]