Detailed in-furnace measurements with reburning of superfine pulverized coal in high CO_(2)concentration  

作　　者：Jun Shen Jiaxun Liu Shengxiang Deng Sha Wang Bin Chen Xiumin Jiang 

机构地区：[1]School of Mechanical and Automotive Engineering,Shanghai University of Engineering Science,Shanghai 201620,China [2]School of Mechanical Engineering,Shanghai Jiao Tong University,Shanghai 200240,China

出　　处：《Journal of Environmental Sciences》2021年第6期326-334,共9页环境科学学报（英文版）

基　　金：supported by National Natural Science Foundation of China(Nos.51776123,51806140,and 51704194);the Shanghai Sailing Plan(No.19YF1418000)。

摘　　要：This paper presents detailed measurements of gaseous species during the reburning process with high CO_(2)concentration in a bench-scale furnace.Superfine pulverized coal,with the average particle size below or around 20μm,is used as the reburning fuel.The data of flue gas concentration(NOx,HCN,NH_(3),CH_(4),O_(2),CO,CO_(2)etc.)is obtained in order to reveal the intrinsic connection between NOx emissions and other influential gaseous species at different positions of the furnace.The finding concludes that the advantage of superfine pulverized coal with regard to NO reduction is more efficient in homogeneous stage rather than heterogeneous stage.Meanwhile,the evolution of HCN and CH_(4)agrees well with each stage of NO reduction,which indicates that these gaseous species are favorable for NO abatement.Eventually,oxygen consumption rate for superfine pulverized coal is relatively faster,conducive to strengthen both homogeneous and heterogeneous NO reduction under CO_(2)reburning condition.

关 键 词：NO reduction Superfine pulverized coal Coal combustion Reburning in CO_(2) 

分 类 号：X701[环境科学与工程—环境工程]