文献类型：期刊文献

英文题名：Gas evolution characteristics during pyrolysis and catalytic pyrolysis of coals by TG-MS and in a high-frequency furnace

作者：Ding, Lu[1];Zhou, Zhijie[1];Guo, Qinghua[1];Lin, Shanjun[1];Yu, Guangsuo[1]

机构：[1]E China Univ Sci & Technol, Key Lab Coal Gasificat & Energy Chem Engn, Minist Educ, Shanghai Engn Res Ctr Coal Gasificat, Shanghai 200237, Peoples R China

年份：2015

卷号：154

起止页码：222

外文期刊名：FUEL

收录：;EI(收录号：20151600753061);WOS:【SCI-EXPANDED(收录号:WOS:000353893200027)】；

基金：This work has been partially supported by the National High Technology Research and Development of China (863 program, 2012AA053101), and the National Natural Science Foundation of China (21376081).

语种：英文

外文关键词：Catalytic pyrolysis; Na2CO3; Quadrupole mass spectrometry; Gaseous compounds evolution

摘要：Pyrolysis and catalytic pyrolysis behaviors of two kinds of coals with different ranks were determined by thermogravimetric analyzer-mass spectrometry (TG-MS) and a high-frequency furnace. A quantitative method of on-line gas analysis was proposed using quadrupole mass spectrometry. The effects of pyrolysis temperature (650-800 degrees C) and Na2CO3 loading amount (0-15 wt.%) on the gaseous compounds evolution were investigated. The results show that loading Na2CO3 on coal was favorable for gas production in pyrolysis process. The yields of light gas species in the high-frequency furnace were lower than those in TG-MS. By comparing the pyrolysis yields of gas and solid in the high-frequency furnace and TG-MS, it was concluded that heating methods had great effects on the reaction mechanism and product distribution of pyrolysis and catalytic pyrolysis of coals. Moreover, the evolution processes of gaseous compounds were related to the presence of different functional groups in the solid samples. (C) 2015 Elsevier Ltd. All rights reserved.