煤/石油焦共气化过程中AAEM的催化转化行为  

Catalytic Characteristics and Transformation of AAEMs During Co-Gasification of Coal and Petroleum Coke

作　　者：刘虎平 张轩[2] 于敦喜[1] 于戈 喻鑫[1] 吴建群[1] 徐明厚[1] 乔慧坡 王泉斌[2] Liu Huping;Zhang Xuan;Yu Dunxi;Yu Ge;Yu Xin;Wu Jianqun;Xu Minghou;Qiao Huipo;Wang Quanbin(State Key Laboratory of Coal Combustion,Huazhong University of Science and Technology,Wuhan 430074,China;China Ship Development and Design Center,Wuhan 430064,China)

机构地区：[1]华中科技大学煤燃烧国家重点实验室,武汉430074 [2]中国舰船研究设计中心,武汉430064

出　　处：《燃烧科学与技术》2020年第2期105-112,共8页Journal of Combustion Science and Technology

基　　金：国家自然科学基金资助项目(51676075)。

摘　　要：以富含碱金属及碱土金属的准东煤和石油焦为原料,在热重反应器上分别进行了水蒸气及CO2条件下的共气化实验,探究了AAEM的赋存形态对其转化行为及燃料气化特性的影响规律.研究表明,准东煤与石油焦在水蒸气条件下的共气化反应速率明显快于CO2条件,来自煤中的AAEM促进了石油焦的气化.在CO2气氛中,不同赋存形态矿物的催化作用存在较大差异,盐酸溶态的Ca起主要催化作用,并在气化过程中生成CaS.而在水蒸气气氛中,不同赋存形态矿物的催化作用差异较小,气化过程中含Ca组分主要生成CaO.Co-gasification of petroleum coke and Zhundong coal rich in alkali and alkaline earth metals(AAEMs)was tested.The experiments were conducted on a thermogravimetric reactor and under the conditions of steam and CO2,respectively.The effects of the occurrence of AAEMs on their transformation and fuel co-gasification behavior were investigated.The results show that the gasification rate of Zhundong coal/petroleum coke mixtures in steam was significantly faster than that in CO2.The AAEMs promoted the co-gasification process.In CO2 gasification,the effects of Ca on co-gasification mainly depended on its occurrence in Zhundong coal.The HCl-soluble Ca played a dominant role in the catalysis of fuel gasification.The major product of Ca was CaS during CO2 gasification.In steam gasification,different forms of Ca in Zhundong coal had similar catalytic effects on cogasification,and the major product was CaO.

关 键 词：准东煤 石油焦 共气化 AAEMs 催化转化 

分 类 号：TK11[动力工程及工程热物理—热能工程]