离子膜法烧碱副产硫酸脱氯工艺的优化  

Process optimization of by-product sulfuric acid dechlorination in ion-exchange membrane caustic soda production

作　　者：李景豪 韩巍 谢菊仙 张东海 LI Jinghao;HAN Wei;XIE Juxian;ZHANG Donghai(Xinjiang Zhongtai Chuangan Environmental Technology Co.,Ltd.,Urumqi 830019,China;Xinjiang Huatai Heavy Chemical Co.,Ltd.,Urumqi 830019,China;Xinjiang Shengsheng Co.,Ltd.,Urumqi 830019,China)

机构地区：[1]新疆中泰创安环境科技股份有限公司,新疆乌鲁木齐830009 [2]新疆华泰重化工有限责任公司,新疆乌鲁木齐830009 [3]新疆升晟股份有限公司,新疆乌鲁木齐830009

出　　处：《氯碱工业》2023年第5期35-39,共5页Chlor-Alkali Industry

摘　　要：新疆中泰创安环境科技股份有限公司于2017年投建1套2万√a废酸脱氯装置,将危险废弃物转化成产品,提高副产硫酸的经济附加值。运行过程中存在如下问题:真空系统立式机械真空泵故障率高,冬季生产原料硫酸温度低,脱氯效果差等。提出改造方案:将机械式真空泵改为水力真空泵;原料进料管线增加板式换热器;脱氯塔单独接人进料管线;提升自控水平,降低劳动强度。改造后,游离氯质量分数下降到0.007%以下,现场作业人员由3人减少至1人。In 2017,Xinjiang Zhongtai Chuangan Environmental Technology Co.,Ltd.invested in the construction of a 20000 t/a waste acid dechlorination unit to convert hazardous waste into products and increased the economic added value of by-product sulfuric acid.During operation of the unit,there were the following problems:high failure rate of vertical mechanical vacuum pumps for the vacuum system,low temperature of raw material sulfuric acid during production in winter,and poor dechlorination effect.The following transformation plans were proposed:replacing the mechanical vacum pump with a hydraulic vacuum pump;adding plate heat exchangers to the raw material feeding pipeline;separately connecting the dechlorination tower to the feed pipeline;improving automatic control level to reduce labor intensity.After the transformations were carried out,the free chlorine mass fraction decreased to below 0.007%,and the number of on-site workers decreased from 3 to 1.

关 键 词：危险废弃物 副产物 硫酸 脱氯 自控 连续生产 

分 类 号：X781.2[环境科学与工程—环境工程]