摘要
本文针对试生产过程中出现的问题,对钠碱盐析结晶法生产亚硫酸钠工艺进行理论分析。结果表明,每盐析结晶生产1 t亚硫酸钠,吸收塔中吸收反应会结晶析出0.157 t亚硫酸钠,中和反应会给系统带进0.995 t水;氧化副反应主要发生在三级吸收塔,且温度越高,副反应程度越大。根据理论分析结果,采用一定的工艺改进后,使钠碱盐析结晶法实现了稳定工业化生产。
The production process of sodium sulfite by sodium-alkali salting out crystallization is analyzed theoretically.The results show that for every 1 t sodium sulfite produced by salting out crystallization,the absorption reaction in the absorption tower will crystallize and precipitate 0.157 t sodium sulfite,and the neutralization reaction will bring 0.995 water into the system;the oxidation side reactions mainly occurs in the tertiary absorption tower,and the higher the temperature,the greater the degree of side reaction.According to the theoretical analysis results,the sodium-alkali salting out crystallization method has been improved to achieve stable industrial production.
作者
张惠
岳国海
贾云雪
谭刚
ZHANG Hui;YUE Guo Hai;JIA Yun Xue;TAN Gan(Liaoning New China Dragon Dayou Moly Co.,Ltd.,Jinzhou 121013,Liaoning,China)
出处
《中国钼业》
2020年第2期49-51,共3页
China Molybdenum Industry
关键词
烟气脱硫
盐析结晶
亚硫酸钠
理论分析
flue gas desulfurization
salting out crystallization
sodium sulfite
theoretical analysis
作者简介
张惠(1983-),男,硕士,从事尾气处理研究。E-mail:zhanghui268@163.com。
