燃煤电厂氨法碳捕集浆液中捕集产物结晶行为研究  

Study on Crystallization Behaviour of Captured Products fromAmmonia Carbon Capture Slurry in Coal-fired Power Plant

作　　者：马双忱[1] 高和利 陈柳潼 贾俊 樊帅军 陈文通 王小华 MA Shuangchen;GAO Heli;CHEN Liutong;JIA Jun;FAN Shuaijun;CHEN Wentong;WANG Xiaohua(Department of Environment Science and Engineering,North China Electric Power University,Baoding 071003,Hebei Province,China;Shenzhen Energy Baoding Power Co.,Ltd.,Baoding 072150,Hebei Province,China)

机构地区：[1]华北电力大学环境科学与工程系,河北保定071003 [2]深能保定发电有限公司,河北保定072150

出　　处：《动力工程学报》2024年第10期1632-1639,共8页Journal of Chinese Society of Power Engineering

基　　金：中央引导地方科技发展资金资助项目(236Z3703G);河北省省级科技计划资助项目(CXZZBS2024173)。

摘　　要：以燃煤电厂碳排放为背景,利用氨水吸收二氧化碳的结晶过程作为研究对象,基于经典的成核理论,采用温度、pH和电导率法研究了改变温度、搅拌转速、添加盐类添加剂前后碳酸氢铵结晶速率的变化,并通过扫描电镜(SEM)和X射线衍射(XRD)分析了有无添加剂对生成碳酸氢铵结晶的影响。结果表明:在水浴温度为25℃,搅拌转速为550 r/min的条件下,碳酸氢铵的结晶反应受到添加剂种类的影响,加入硫酸根离子会减缓反应的进行,加入氯化镁可以加快结晶的产生速率,并产生结构稳定的晶体。Under the background of carbon emission from coal-fired power plants,the crystallization process of carbon dioxide absorbed by ammonia water was used as the research object.Based on the classical nucleation theory,the changes in the crystallization rate of ammonium bicarbonate with temperature,stirring speed,salt additives adding were studied,by using temperature,pH and conductivity methods.The effect of additives on crystallization was analyzed by scanning electron microscope(SEM)and X-ray diffraction(XRD).Results show that the crystallization reaction of ammonium bicarbonate is affected by the kinds of additives at water bath temperature of 25℃and stirring speed of 550 r/min.The addition of sulfate ions will slow down the reaction,while the addition of magnesium chloride can accelerate crystallization rate and generate crystals with stable structure.

关 键 词：碳酸氢铵 结晶 电导率 添加剂 二氧化碳 

分 类 号：O782[理学—晶体学]