HIGH TEMPERATURE COAL PARTIAL GASIFICATION OF O2/STEAM IN A FLUIDIZED BED

摘要：

　　The air-steam partial gasification characteristics of a high-ash coal were studied in a small scale fluidized bed.The influence of steam/coal ratio, gasification temperature, O2/N2 equivalence ratio(ER) on syngas quality was investigated.The results show that increasing steam/coal ratio could accelerate the water-gas shift reaction, thus leading to increased H2 and CO2 yield, and decreased CO yield.However, increasing steam/coal ratio reduces the low heat value (LHV).So the optimized steam/coal ratio falls between 0.45 and 0.5g/g.With the increasing of temperature, the concentration of H2 and CO increases, and the concentration of CO2 and CH4 decreases.Increasing ER could facilitate the combustion of H2 and carbon, therefore it could enhance carbon conversion and increase the yield of CO2.

关键词： high-ash coal partial gasification air-steam fluidized bed

作者: Xiong Zhang Jianjun Cheng Ye Feng Shihong Zhang Hanping Chen

作者单位: State Key Laboratory of Coal Combustion,Huazhong University of Science and Technology,Wuhan 430074,China

会议类型: 国际会议

会议名称: The 11th International Conference on Fluidized Bed Technology(CFB-11)(第十一届流化床技术国际会议)

会议地点: 北京

会议语种:英文

页码: 687-692

在线出版日期: 2014-05-14（万方平台首次上网日期，不代表论文的发表时间）