脱硫废水热烟气蒸发过程中氯离子的释放机理研究  

Research on the Release Mechanism of Chloride Ions During the Evaporation Process of Hot Flue Gas from Desulfurization Wastewater

作　　者：白文方 Bai Wenfang(Jiayuguan Hongsheng Electric Heating Co.,Ltd.,Jiayuguan Gansu 735100,China)

机构地区：[1]嘉峪关宏晟电热公司,甘肃嘉峪关735100

出　　处：《山西化工》2024年第6期117-118,131,共3页Shanxi Chemical Industry

摘　　要：脱硫废水的气化特征及过程中挥发性组分的迁移转化是实现其零排的关键,但目前对其的认识仅停留在宏观层面,缺少相应的量化研究。此次研究探讨了脱硫废水水滴蒸发过程和蒸发工艺条件、脱硫废水特性、氯离子释放机制和影响因素。研究旨在揭示脱硫废水热烟气蒸发过程中氯离子释放规律,以期为脱硫废水热烟气蒸发技术的推广应用、抑制二次污染提供理论与数据支持。此次研究利用仿真试验,对氯的释放机理进行了探讨;同时,还讨论了温度、酸碱度等因素对氯离子释放性能的影响。研究发现,氯离子的释放呈现出一定的阶段性;当温度升高时,水的电离和氯化物的水解将加速氯的析出;pH值越高,对HCl的产生有抑制作用。The gasification characteristics of desulfurization wastewater and the migration and transformation of volatile components during the process are the key to achieving zero discharge.However,current understanding of it is only at the macro level and lacks corresponding quantitative research.This study explores the evaporation process and process conditions of desulfurization wastewater droplets,the characteristics of desulfurization wastewater,the mechanism of chloride ion release,and influencing factors.The research aims to reveal the release law of chloride ions during the evaporation process of desulfurization wastewater hot flue gas,in order to provide theoretical and data support for the promotion and application of desulfurization wastewater hot flue gas evaporation technology and the suppression of secondary pollution.This study utilized simulation experiments to explore the mechanism of chlorine release.Meanwhile,the influence of factors such as temperature and pH on the release performance of chloride ions was also discussed.Research has found that the release of chloride ions exhibits a certain stage.When the temperature rises,the ionization of water and the hydrolysis of chlorides will accelerate the precipitation of chlorine.The higher the pH value,the more inhibitory it has on the production of HCl.

关 键 词：脱硫废水 旁路烟道蒸发 氯离子释放机理 单液滴蒸发 

分 类 号：X703[环境科学与工程—环境工程]