_热解条件对煤焦孔结构和反应性的影响.pdf

33 29 Vol.33 No.29 Oct.15, 2013 2013 10 15 Proceedings of the CSEE ©2013 Chin.Soc.for Elec.Eng. 63 0258-8013 (2013) 29-0063-06 TK 224 A 470 20  1 1 2 (1() 100190 2 222069) Effects of Pyrolysis Conditions on the Pore Structure and Reactivity of Chars 1 1 2 WEN Yuxin , XU Xiang , XIAO Yunhan (1. Key Laboratory of Advanced Energy and Power,, Chinese Academy of Sciences (Institute of Engineering Thermophysics), Haidian District, Beijing 100190, China; 2. Research Center for Clean Energy and Power, Chinese Academy of Sciences, Lianyungang 222069, Jiangsu Province, China) ABSTRACT: Lignite, sub-bituminous and bituminous coals were pyrolyzed in pressurised thermogravimetric analyser (PTGA), muffle furnace (MF) and drop-tube furnace (DTF). The effects of pyrolysis conditions on the char properties were studied. Mercury porosimetry and N , CO adsorption were used 2 2 to obtain pore structures of chars. The CO2 gasification reactivity was determined by PTGA at 1 173K. Chars were also analyzed 0 with scanning electron microscope and a CHN elemental IGCC analyzer. The results indicate that low pyrolysis pressure, high heating rate and short residence time under high temperature [1-2] substantially i