有机钙燃煤固氟剂的固氟效果和表面形态研究  

Study on fluorine removal efficiency and surface morphology of organic calcium fluorine removal additive for coal combustion

作　　者：刘静 向轶 刘建忠[4] LIU Jing;XIANG Yi;LIU Jianzhong(Departmental o f Architecture Engineering,Zhengzhou Technical College,Zhengzhou 450121,China;Xi’an Aerospace Propulsion Institute,Xi’an 710100,China;Xi’an Aerospace Yuan Dongli Engineering Co.,Ltd.,Xi’an 710100,China;State Key Laboratory of Clean Energy Utilization,Zhejiang University,Hangzhou 310027,China)

机构地区：[1]郑州职业技术学院建筑工程系,河南郑州450121 [2]西安航天动力研究所,陕西西安710100 [3]西安航天源动力工程有限公司,陕西西安710100 [4]浙江大学能源清洁利用国家重点实验室,浙江杭州310027

出　　处：《热力发电》2020年第2期65-70,共6页Thermal Power Generation

摘　　要：在煅烧实验台上研究了醋酸钙镁(CMA)、醋酸钙(CA)和丙酸钙(CP) 3种有机钙在不同煅烧温度和时间下煅烧产物的比表面积和表面形态,得出了有机钙固氟效果的变化规律,以及不同有机钙最佳固氟效果的温度和时间窗口。结果表明:不同煅烧温度下有机钙煅烧产物的比表面积随温度升高呈现出先升后降的趋势,并在900℃时达到最大值;3种样品中CMA煅烧产物的比表面积最大,固氟能力最好;不同煅烧时间下有机钙煅烧产物的比表面积随时间延长呈现出先增大后减小的趋势,且煅烧产物比表面积越大时,烧结现象对有机钙固氟能力的不利影响越大;煅烧产物的微观表面形态变化也进一步证实了固氟能力的变化规律。The specific surface area and surface morphology of calcium magnesium acetate(CMA),calcium acetate(CA)and calcium propionate(CP)calcinated at different temperatures and with different incineration times were studied on a calcination experiment table.The change law of fluorine fixing effect of the organic calcium,and the temperature and time window for the optimum fluorine-fixing effect of different organic calcium were obtained.The results showed that,the specific surface area of the calcinated products of the organic calcium increased at first and then decreased with the increasing calcination temperature,and reached the maximum at 900℃.The calcinated products of the CMA had the largest specific surface area and the best fluorine removal efficiency among the three samples.The specific surface area of the calcinated products of the organic calcium increased at first and then decreased with time,and the greater the specific surface area of the calcinates,the greater the adverse effect of sintering on the fluorine removal efficiency.The change of the microscopic surface morphology of the calcinates confirmed the change rule of the fluorine removal ability.

关 键 词：有机钙 固氟 热分解 比表面积 孔隙结构 表面形态 煅烧温度 煅烧时间 

分 类 号：TK16[动力工程及工程热物理—热能工程]