摘要
针对传统离子膜烧碱工艺原材料消耗大、能耗高的缺点,取消原脱氯塔后亚硫酸钠处理装置与一次盐水生产中的加次氯酸钠装置,使脱氯后淡盐水保留5~50 mg·L-1游离氯送去一次盐水化盐,并通过改造原有离子膜烧碱生产系统的相关设备、增加在线监测、改进部分工艺操作方法以及优化工艺控制指标和自动控制参数等措施,实现了生产系统稳定运行,工程操作和维修强度明显减少,且产品质量达到了国际优等品的标准要求。生产1万t烧碱时亚硫酸钠、氯化钡、次氯酸钠的消耗分别下降57.1%、18.5%、100%,节电约1 600 kW.h,外排硫酸盐沉泥减少28.6%（干基）。
To reduce the huge consumption of raw materials and the high energy consumption,the diluted brine to preserve 5 to 50 mg·L-1 free chlorine is removed to salt dissolving through cancellation of sodium sulfite process unit after the dechlorinating tower and sodium hypochlorite unit in the first brine.After equipment innovation in the ionic membrane caustic soda production system,the steady operation of production system is improved and product quality too up to the superior quality of national standard.These innovations provide better online monitoring,improve some technological operations,optimize technological guideposts and autocontrol parameters.To produce 10 000 tons of sodium hydroxide,the consumption of raw materials decreases to sodium sulfite 57.1%,sodium hypochlorite 18.5%,barium chloride 100% respectively,saving power 1 600 kW·h.The strength of operation and maintenance would decrease efflux sulfate silt 28.6%（drybasis）.
出处
《桂林理工大学学报》
CAS
北大核心
2011年第1期100-105,共6页
Journal of Guilin University of Technology
基金
河南省重点科技攻关项目(072102270006)
关键词
离子膜
烧碱
工艺优化
ionic membrane caustic
sodium hydroxide
process optimization
