燃料化学学报2018，Vol.46Issue(3)：290-297,8.
生物质气化燃气中固体颗粒物的恒温临氧热解机理研究
Isothermal partial oxidative pyrolysis mechanisms of solid particles from biomass gasification
摘要
Abstract
Isothermal pyrolytic characteristics of PBG at 400 ℃ under different reaction atmospheres in a horizontal tubular quartz reactor were investigated and compared. Meanwhile,chemical structures of PBG and its pyrolysis solid products were also analyzed with the help of XPS and 13C NMR methods. The results indicate that tar yields derived from PBG pyrolysis are 50.71 and 37.45 mg/g under biomass air gasification(BAG) and N2 atmospheres,respectively,while 11.96 mg/g under BAG+2% O2 atmosphere,which indicates that the presence of oxygen can inhibit the production of tar. Furthermore, the dominant reaction is characterized as the polycondensed aromatization involving dehydrogenation and deoxygenation in PBG under BAG atmosphere, tending to the formation of heavy organic compounds such as tar. While, surface oxygen-containing organic functional groups can be generated via the oxidation reaction between some surface functional groups of PBG and O2 in PBG under BAG+2% O2 atmosphere,inhibiting the aromatization of aromatic clusters and the formation of heavy organic compounds such as tar to some extent. Thus,the introduction of a limited amount of oxygen may be helpful for solving the pipe blockage during hot gas filtration of the raw BAG gas.关键词
生物质气化/气化固体颗粒物/恒温热解/临氧氧化/高温过滤Key words
biomass gasification/particle from biomass gasification/isothermal pyrolysis/partial oxidative/hot gas filtration分类
能源科技引用本文复制引用
林娜,郎林,刘华财,阴秀丽,吴创之..生物质气化燃气中固体颗粒物的恒温临氧热解机理研究[J].燃料化学学报,2018,46(3):290-297,8.基金项目
The project was supported by the National Natural Science Foundation of China(51676192,51661145022)and the Science and Technology Program of Guangzhou(201707010237).国家自然科学基金(51676192,51661145022)和广州市科技计划项目(201707010237)资助 （51676192,51661145022）
