期刊论文

STUDY ON GASIFICATION CHARACTERISTICS OF GUIZHOU COAL WITH HIGH FUSION TEMPERATURE

中文

煤炭转化

Coal Conversion

1004-4248

2015

38

1

27-32

10.3969/j.issn.1004-4248.2015.01.006

国家高技术研究发展计划(863)项目

本校为其他机构

选取贵州典型高灰熔点煤种老矿中煤,在柱塞流反应器中进行气化特性研究,在未反应碳缩核模型以及动力-扩散模型两种气化反应动力学模型的基础上,建立了相应的一维柱塞流气化小室模型.结果表明,当反应温度从1 200℃上升至1 500℃时,CO2的体积分数下降约15％,CO的体积分数上升约16％,H2的体积分数上升约2％,碳转化率上升约20％;在相同温度下,水煤浆浓度增加5％,CO的体积分数约增加3％,H2的体积分数约增加0.5％,碳转化率下降约1.5％,气化模型计算结果与实验结果吻合较好.同时建议在实际气化炉运行过程中,应提高水煤浆浓度,以保证碳转化率同时尽量提高合成气有效成分.

Study on gasification characteristics of typical coal in Guizhou Province with high ash fusion temperature is carried out during plug flow. A corresponding gasification model which is based on the shrinking core model and the dynamic-diffusion model has been built in accordartce with the boundary conditions of the experimental gasifier. The result shows that when the temperature increased form 1 200 ℃ to 1 500 ℃, the volume fraction of CO2 decreases by 15%, the volume fraction of CO increases by 16%, the volume fraction of H2 increases by 2%,...