不同煤种低温氧化过程指标气体变化规律研究 .pdfVIP

学兔兔 2013年第2期 煤 炭 工 程 不同煤种低温氧化过程指标气体变化规律研究 王彩萍 ，王伟峰 ，邓 军 (1．西安科技大学能源学院，陕西西安 710054； 2．西部矿井开采及灾害防治教育部重点实验室，陕西西安 710054) 摘 要：以不同煤种为研究对象，按不同的粒度进行程序升温实验，采集不同温度时产生的 气体进行气相色谱分析，以期分析煤氧化过程中产生指标CO，C H 和C：H6气体量以及气体浓 度的变化规律。实验结果表明：不同煤种低温氧化产生指标气体的温度不同，煤变质程度越高， 氧化能力越低，特征温度越高；CO和C H 产生量与温度呈指数关系；并确定了在相同温度段 不同煤种CO和C H 产生量的关系。 关键词：不同煤种；低温氧化；指标气体；变化规律 中图分类号：TQ533．5 文献标识码：A 文章编号：1671—0959(2013)02-0109-04 Study on Index Gas Variation Law of Different Coal During Low Temperature Oxidation Process WANG Cai—ping ，WANG Wei—feng ，DENG Jun ’ (1．School of Energy and Resources，Xi an University of Science and Technology，Xi an 71~54，China； 2．MOE Key Lab of Mining and Disaster Prevention and Control in Western Mines，Xi an 71~54，China) Abstract：Taking different coal as the~tudy object，programmed temperature rising experiments were conducted base on different size of coa1．Gas chromatography analyses were conducted on the gas collected from different temperature in order to analyze the index CO，C2 H4 and C2 H6 gas values from the coal oxidation process and the variation law of the gas concentration．The experiment results showed that the temperature of the index gas from the low temperature oxidation of different coal would be different．A higher metamorphic degree of coal，a lower coal oxidation capacity would be and a higher feature temperature would be．The production value and temperature of CO and C2 H4 were in an index relationship． The relationship between the CO and C2 H4 production of different coal at a same temperature was determined． Keywords：different coal；low temperature oxidation；index gas；variation law 我