配制次氯酸钠用水pH值控制方案  

Control scheme of pH value of water for preparation of sodium hypochlorite aqueous solution

作　　者：闫建宁 苏晓凤 刘丽倩[1] 王志勇[1] 田娜[1] YAN jianning;SU Xiaofeng;LIU Liqian;WANG Zhiyong;TIAN Na(Tangshan Sanyou Chlor-Alkali Co.,Ltd.,Tangshan 063305,China)

机构地区：[1]唐山三友氯碱有限责任公司技术中心,河北唐山063305

出　　处：《聚氯乙烯》2020年第5期26-28,共3页Polyvinyl Chloride

摘　　要：从稀盐酸配制单闭环比值控制、稀盐酸高位槽液位位式控制、酸性水罐pH值自动控制、酸性水罐液位控制和两台酸水泵互锁控制等方面,结合仪表选型介绍了次氯酸钠配制水pH值调节过程的自动化控制方案。The automatic control scheme of pH value of water for preparation of sodium hypochlorite aqueous solution was introduced from the aspects such as single closed-loop ratio-control for preparation of dilute hydrochloric acid,liquid level control of dilute hydrochloric acid high level tank,automatic pH control and liquid level control of acidic water tank,interlock control of two acid water pumps,and selection of instrument.

关 键 词：次氯酸钠 盐酸 酸性水 溶液配制 DCS 控制方案 

分 类 号：TQ056.2[化学工程]