燃料化学学报Issue(6)：641-649,9.
CO气氛下褐煤加压快速热解过程中CH4的逸出规律
CH4 release character from pressurized fast pyrolysis of lignite in CO atmosphere
摘要
Abstract
Fast pyrolysis of Huolinhe lignite was carried out under pressure in a tubular reactor, and the CH4 evolution at CO atmosphere was examined. CO dissociation state O( a) adsorbed on coal is an active center. The stronger electronegative O could induce the electron cloud of other atoms around O ( a ) atom to offset to it, which could weaken the strength of original chemical bonds and promote their breaking. These result in the cracks of the aromatic ring, side chain, ether linkages and aliphatic chain in the char, which could produce more free radicals. The free radicals could stabilize the fragments produced in the pyrolysis, and lead to more CH4 generated and involved. Therefore, the CH4 yield is higher under CO than it in N2 . The CH4 yield increases by 12. 5% under CO compared with N2 at 900℃ and 1. 0 MPa. The CH4 yield increases with raise of temperature and pressure.关键词
CO气氛/加压/快速热解/CH4 逸出规律/化学键断裂Key words
CO atmosphere/pressure/fast pyrolysis/the CH4 evolution/the crack of the chemical bonds分类
化学化工引用本文复制引用
高松平,王建飞,赵建涛,王志青,房倚天,黄戒介..CO气氛下褐煤加压快速热解过程中CH4的逸出规律[J].燃料化学学报,2014,(6):641-649,9.基金项目
国家自然科学基金(21106173) （21106173）
中国科学院战略性先导科技专项(XDA0705100) （XDA0705100）
中国科学院山西煤炭化学研究所青年人才基金(2011SQNRC01) （2011SQNRC01）
高等学校科技创新项目(20091040)。 （20091040）
