王姗,周敏
WANG Shan,ZHOU Min

• 1:中国矿业大学化工学院

摘要(Abstract)：

为分析生物质对晋城无烟煤气化过程的影响,以晋城无烟煤和杨树木屑为试验对象,研究无烟煤、脱灰无烟煤与木屑在气化介质CO2下的共气化特性,通过热重分析法考察了木屑掺混比、升温速率、煤样脱灰处理等因素对气化过程的影响。结果表明,掺混生物质木屑能降低无烟煤、脱灰无烟煤共气化温度,且增加生物质掺混比例能显著降低起始反应温度;脱灰无烟煤共气化反应起始温度更低。10、20℃/min升温速率下共气化试验结果表明,升温速率对共气化过程有一定影响;低升温速率下开始气化反应温度低,高升温速率下最大质量变化速率值大;煤样脱灰处理后,失去矿物质使煤孔结构发达,生物质与气化剂反应活位点增加,能提高气化反应性。
In order to analyze the influence of biomass on gasification of Jincheng anthracite,Jincheng anthracite and poplar sawdust were used as experimental objects to study the co-gasification characteristics of anthracite,demineralized anthracite and sawdust in the atmosphere of CO2.The influence of the blending ratios of poplar sawdust,heating rate and demineralization of coal samples on the gasification process was investigated by thermogravimetric analysis.The results show that the blending ratio of biomass can reduce the co-gasification temperature of anthracite and demineralized anthracite,and the increase of blending ratio can significantly reduce the initial reaction temperature,the initial temperature of co-gasification reaction of demineralized anthracite is lower,additionally. Comparisons of two kinds of heating rate of 10 and 20 ℃/min,heating rate has certain effect on co-gasification process,that is,low heating rate startes gasification reaction at lower temperature,and high heating rate obtains the maximum value of weight loss rate.After the anthracite is de-ashed,the loss of minerals leads to the development of coal pore structure,the active site of biomass and gasification agent is increased,and the gasification reactivity is improved.

关键词(KeyWords)： 晋城无烟煤;脱灰无烟煤;木屑;共气化;升温速率
Jincheng anthracite;demineralized anthracite;sawdust;co-gasification;heating rate

Abstract:

Keywords:

基金项目(Foundation): 国家重点研发计划资助项目(2016YFE0102500-11-01)

作者(Author): 王姗,周敏
WANG Shan,ZHOU Min

DOI: 10.13226/j.issn.1006-6772.18012302

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