还原镁渣在电厂烟气湿法脱硫中的应用  

Application of Reduced Magnesium Slag in Wet Flue Gas Desulfurization of Power Plant

作　　者：郭静静[1] GUO Jing-jing(Yvlin Vocational and Technical College,Yvlin 719000,China)

机构地区：[1]榆林职业技术学院,陕西榆林719000

出　　处：《化学与粘合》2022年第5期451-453,共3页Chemistry and Adhesion

基　　金：陕西省榆林市科学技术局项目(编号:2019-112-05);榆林市科协2020年青年人才托举计划项目(编号:20200217)

摘　　要：为了消纳还原镁渣,实现以废治废,在电厂烟气脱硫中将还原镁渣用作脱硫剂。对还原镁渣在电厂烟气湿法脱硫中的应用进行了可行性分析,并设计了一套以还原镁渣用作脱硫剂的实验装置。结果表明,1200℃高温下镁渣与水按5∶1进行水合,将水合反应器加入其容积3/5的水,水合温度保持在75℃,反应时间为1.5h,浆液搅拌器的速度为30r/min,燃煤烟气与水合镁渣浆液的反应用量体积比为2∶1,脱硫反应的温度为40℃,时间为3h,保持水容积恒定,系统连续进行脱硫反应。最终脱硫效率可达78%,对新建或已投产运行的电力企业都有推广价值,具有可行性。同时,使得还原镁渣这种废弃物,多了一种固废利用的途径。In order to absorb the reduced magnesium slag and realize waste treatment by waste,the reduced magnesium slag is used as desulfurizer for the wet flue gas desulfurization in power plants.The feasibility of application of reduced magnesium slag in the wet flue gas desulfurization in power plants is analyzed,and a set of experiment device for utilizing reduced magnesium slag as desulfurizer is designed.The results show that the high-temperature magnesium slag at 1200℃is hydrated with water at a ratio of 5∶1,and the hydration reactor is added with water of 3/5 of its volume,the hydration temperature is kept at 75℃and the reaction time is 1.5h,the speed of slurry stirrer is 30r/min,and the dosage/volume ratio of coal flue gas to hydrated magnesium slag slurry is 2∶1,the desulfurization reaction temperature is 40℃and the time is 3h,keeping the water volume constant,the system carries out the desulphurization reaction continuously.The final desulfurization efficiency can reach 78%,which is of great value and feasibility for the newly-built power enterprises or the ones which are already put into operation.Meanwhile,this study provides an approach to utilize the reduced magnesium slag which is also a solid waste.

关 键 词：皮江法 还原镁渣 湿法脱硫 脱硫装置 

分 类 号：TQ546.5[化学工程—煤化学工程]