Experimental Investigation for Co-Combustion Characteristics of Semi-Coke and Bituminous Coal in a 3 MWth Tangential Combustion Facility  

作　　者：GUAN Jingyu YU Qiang SUN Rui SHEN Tao WANG Minghao YAN Yanfei SONG Xin 

机构地区：[1]School of Energy Science and Engineering,Harbin Institute of Technology,Harbin 150001,China [2]State Key Laboratory of Efficient and Clean Coal-Fired Utility Boilers,Harbin Boiler Company Limited,Harbin 150046,China

出　　处：《Journal of Thermal Science》2020年第6期1655-1662,共8页热科学学报（英文版）

基　　金：funded by National Key Research and Development Program of China(Grant No.2017YFB0602002,and Grant No.2016YFC0203700)。

摘　　要：An experimental investigation was conducted in a 3 MW pilot-scale tangential combustion facility to explore the co-combustion characteristics of bituminous coal mixed with semi-coke.The thermal gravimetric analyzer(TGA)was used to obtained fuel thermal analysis.The results presented effects of semi-coke blending ratio(BR)on average furnace temperature,ignition temperature,NO emission and combustion efficiency.The excess air coefficient in main combustion sections and outlet were fixed at 0.85 and 1.2 while BR increased from 0%to 50 wt.%.The temperature profiles of combustion decreases along the height of furnace while average furnace temperature fluctuates slightly with an increasing BR.The concentration of NO has an increasing tendency with the increasing of BR.The ignition temperature obtained from TGA measurement agreed well with experiment result.In addition,combustion efficiency was not sensitive to BR and decreased slightly with the increasing BR.

关 键 词：tangential combustion SEMI-COKE blending ratio combustion characteristics experimental investigation 

分 类 号：TK227.1[动力工程及工程热物理—动力机械及工程]