次氯酸钠系统的设计优化  

Design optimization of sodium hypochlorite system

作　　者：郝明松 陶鑫 邵金 HAO Ming-song;TAO Xin;SHAO Jin(Jiangsu Ruiheng New Material Technology Co.,Ltd.,Lianyungang 222065,China)

机构地区：[1]江苏瑞恒新材料科技有限公司,江苏连云港222065

出　　处：《中国氯碱》2023年第4期1-6,52,共7页China Chlor-Alkali

摘　　要：离子膜烧碱事故氯装置烧碱在吸收氯气过程中,游离碱逐渐减少,有效氯逐渐上升,氯气吸收速度随着游离碱浓度降低而降低。成品次氯酸钠浓度控制有效氯10%以上,游离碱的浓度控制在1%以下,如何精确控制游离碱浓度困扰着次氯酸钠生产企业。采用近红外线控制取代原先的氧化还原电位测量能够准确判断有效氯含量及游离碱浓度,稳定装置运行。In the process of absorbing chlorine gas in the ion exchange membrane caustic soda accident chlorine device,free alkali gradually decreases and effective chlorine gradually increases.The absorption rate of chlorine gas decreases with the decrease of free alkali concentration.The concentration of finished sodium hypochlorite should be controlled by more than 10%effective chlorine,and the concentration of free alkali should be controlled by less than 1%.How to accurately control the concentration of free alkali is a problem in the production of sodium hypochlorite.Using near-infrared control instead of the original oxidation reduction potential measurement can accurately determine the effective chlorine content and free alkali concentration,and stabilize the operation of the device.

关 键 词：有效氯 游离碱 氧化还原电位 近红外 

分 类 号：TQ151.22[化学工程—电化学工业]