化工企业脱硫石膏盐溶液法制备硫酸钙晶须的工艺研究  

Research on the Production Process of Preparing Calcium Sulfate Whiskers with Desulfurized Gypsum from Chemical Plant Using Salt Solution Method

作　　者：常姗燕 杨玉敏 董丽丽 赵俊 马小男 孙佳源 CHANG Shan-yan;YANG Yu-min;DONG Li-li;ZHAO Jun;MA Xiao-nan;SUN Jia-yuan(School of Chemistry and Chemical Engineering,Xingtai University,Xingtai 054001,China)

机构地区：[1]邢台学院化学与化工学院,河北邢台054001

出　　处：《安徽化工》2024年第2期130-134,共5页Anhui Chemical Industry

基　　金：邢台市重点研发计划项目:大宗固废工业副产石膏资源化利用技术应用研究(2022ZZ057);煤焦化副产脱硫石膏脱色技术优化与应用(2020ZZ015)。

摘　　要：采用湿法脱硫工艺处理化工厂的废气时,会产生一种固体废弃物即脱硫石膏。与传统石膏相比,化工厂脱硫石膏中含有大量的有机杂质,综合利用难度更大。通过实验探索以化工厂脱硫石膏为原料制备硫酸钙晶须的生产工艺,分别采用盐溶液法制备晶须,探索盐溶液法中不同种类、不同浓度的盐溶液对产品的晶型形貌的影响。结果表明,采取盐溶液法制备晶须时,共对比5种不同盐溶液的效果,发现质量分数为10%的氯化钙中制备的晶须形貌最好,长径比为20~40,满足国标要求,且转化率较高。The chemical plant brings out a solid waste called desulfurized gypsum when adopting the wet desulfurization process to treat the waste gas of the chemical plant.Compared with traditional gypsum,desulfurized gypsum in chemical plants contains a large number of organic impurities,which is more difficult to use comprehensively.In this study,the pro-duction process of preparing calcium sulfate whiskers with desulfurized gypsum from chemical plant was explored through experiments.The whiskers were prepared by hydrothermal method and salt solution method,and the effect of hydrothermal conditions and different concentrations of salt solution on the product sound were explored.The results show that the whis-ker products content with national standard are not yet produced by changing the hydrothermal conditions.When preparing whiskers by the salt solution method,the effects of 5 different salt solutions were compared,and it shows that the whiskers prepared in calcium chloride with a mass fraction of 10%have the best morphology,with an aspect ratio of 20~40,which meets the requirements of the national standard and have a high conversion rate.

关 键 词：脱硫石膏 硫酸钙晶须 湿法脱硫 盐溶液法 水热法 

分 类 号：TQ132.32[化学工程—无机化工] O784[理学—晶体学] TQ177.375