氯化钙溶液蒸发工艺对比  

Comparison of evaporation processes of calcium chloride solution

作　　者：张强 王炳男 ZHANG Qiang;WANG Bingnan(Zhejiang Zhenyang Development Co.,Ltd.,Ningbo 315200,China)

机构地区：[1]浙江镇洋发展股份有限公司,浙江宁波315200

出　　处：《氯碱工业》2022年第1期20-21,25,共3页Chlor-Alkali Industry

摘　　要：在环氧氯丙烷生产过程中,产生大量氯化钙废水,将该氯化钙废水处理并浓缩后制成氯化钙产品外售。比较了将氯化钙溶液浓缩至35%(质量分数)的三效顺流和三效逆流蒸发工艺,顺流蒸发工艺蒸汽消耗略高,但减少了泵的使用,降低了电耗,且循环水用量低,因此,顺流蒸发工艺更合适。A large amount of calcium chloride wastewater was produced in the production of epichloro-hydrin.The calcium chloride wastewater was treated and concentrated to make calceium chloride products for sale.The thre-effect concurrent process and the threeffect countercurrent evaporation process for concentrating calcium chloride solution to 35%(mass fraction)were compared.The steam consumption in the cocurrent evaporation process was slightly higher,but the power consumption was reduced because the use of pumps was reduced,and the consumption of eirculating water was low.Therefore,the cocurrent evaporation process was more suitable.

关 键 词：氯化钙溶液 蒸发 三效逆流工艺 三效顺流工艺 

分 类 号：TQ13[化学工程—无机化工]