氧化铝焙烧炉余热可利用分析  

Analysis on waste heat availability of alumina calciner

作　　者：王宝奎[1] 李志国[1] 王晓平 杨群太 Wang Baokui;Li Zhiguo;Wang Xiaoping;Yang Quntai(Shenyang Aluminum and Magnesium Engineering and Research Institute Co.,Ltd.,Shenyang 110001,China;Huaqing College,Xi'an University of Architecture&Technology,Xi'an 710043,China;Guangxi Huasheng New Materials Co.,Ltd.,Fangchenggang 538000,China)

机构地区：[1]沈阳铝镁设计研究院有限公司,辽宁沈阳110001 [2]西安建筑科技大学华清学院,陕西西安710043 [3]广西华昇新材料有限公司,广西防城港538000

出　　处：《轻金属》2022年第8期17-20,共4页Light Metals

摘　　要：本文简要介绍了氢氧化铝焙烧过程的热利用现状,对焙烧过程余热在烟气显热、潜热和氧化铝产品中的分布情况进行了分析,对于不同气体燃料条件下生产单位氧化铝产品的碳排放量进行了计算。给出了氧化铝产品携带的热量,通过热量分布分析和行业运行现状的对比,认为间接加热余热回收率低,不适合氢氧化铝焙烧产生的高湿烟气余热回收,采直接换热回收氢氧化铝焙烧烟气余热,热量回收率高,可实现余热回收和深度收尘一体化,烟气达到超低排放要求。为行业从业者确定经济可行的焙烧炉余热利用方案提供参考。This paper briefly introduces the current situation of heat utilization in aluminum hydrate calcination process,analyzes the distribution of waste heat in flue gas sensible heat,latent heat and alumina products,as well as calculates the carbon emission per unit product of alumina under different gas fuel conditions.The heat carried by alumina products is presented.Through the comparison of heat distribution analysis and industry operation status,it is considered that the waste heat recovery rate of indirect heating is low,which is not suitable for the waste heat recovery of high-temperature flue gas from aluminum hydrate calcination.The direct heat exchange is used to recover the waste heat of flue gas from aluminum hydrate calcination,with high waste heat recovery rate obtained,which can realize the integration of waste heat recovery and deep dust collection,and the flue gas can meet the ultra-low emission requirements,thus providing reference for industry counterparts to determine the economical and feasible waste heat utilization plan of calciners.

关 键 词：氧化铝 焙烧炉 烟气 余热 

分 类 号：TF806.1[冶金工程—有色金属冶金]