煤田地质与勘探2016，Vol.44Issue(6)：27-32,37,7.DOI:10.3969/j.issn.1001-1986.2016.06.005
煤热解气体主产物及热解动力学分析
Main gases and kinetics of coal pyrolysis
摘要
Abstract
In order to study the gas products and kinetic parameters of coal pyrolysis, the pyrolysis experiment was carried out for four coal samples with different thermal evolution using Thermo Gravimetric-Infrared-Mass spec-trometry (TG-IR-MS). The variation trend of components and amount of released gases of four kinds of coal sam-ples during pyrolysis at temperature range of 30℃ to 1 100℃ with the heating rate of 10℃/min under helium at-mosphere was recorded in real time. The thermal analysis results showed that the weight loss rate and the maximum weight loss rate of coal decreased gradually with the increase of the thermal evolution degree, and was positively related to the voltile of dry ash-free basis. Some small-molecule gases like H2O, CH4, CO2,H2and SO2were re-leased gradually with pyrolysis temperature. With the increase of the coalification degree, the peaks of released gases gradually shifted to higher temperature. Pyrolysis kinetic analysis of coals with different coalification degree showed that the activation energy decreased with the metamorphism degree, illustrating that the heat effect strength and the ability of pyrolysis reactions decreased gradually.关键词
煤/热解/热重-红外-质谱联用技术/气相产物/热解动力学Key words
coal/pyrolysis/TG-IR-MS/gaseous products/kinetics分类
天文与地球科学引用本文复制引用
刘钦甫,崔晓南,徐占杰,郑启明,毋应科..煤热解气体主产物及热解动力学分析[J].煤田地质与勘探,2016,44(6):27-32,37,7.基金项目
山西省煤层气联合研究基金资助项目(2013012005)@@@@Shanxi Provincial Basic Research Program-Coal Bed Methane Joint Research Foundation(2013012005) （2013012005）
