林产化学与工业Issue(3)：13-19,7.DOI:10.3969/j.issn.0253-2417.2015.03.003
热过滤对流化床快速热解制取生物油产率和品质的影响
Effects of Hot Filtration on Yield and Quality of Bio-oil from Fast Pyrolysis of Chinese Fir in Fluidized Bed Reactor
摘要
Abstract
A hot filter was added to a 1 kg/h bench-scale continuous bubbling fluidized bed system for the fast pyrolysis of Chinese fir to get bio-oils. The effects of hot filter on the yield and stability of bio-oils were studied. The results indicated that both the yields of pyrolysis oil ( without hot filtration ) and filtered oil ( after hot filtration ) increased with the increase of pyrolysis temperature,and decreased after 475 ℃,at which the maximum yields were 58. 1% and 50. 7%,respectively. The addition of hot filter resulted in lower oil yield ( approximate 5% -10% decrease) ,which became worse when pyrolysis temperature increased. Compared to the pyrolysis-oilⅠ,the water content of filtered-oilⅠincreased from 13. 77% to 15. 83%,pH value increased from 2. 18 to 2. 23,and high-heating value decreased from 20. 47 MJ/kg to 19. 53 MJ/kg. However,it also showed significant reduction in solids contents,alkali and alkaline earth metals,and the overall decline was about 75%,which suppressed the happening of self-polymerization in bio-oils. During the aging tests,water content and kinematic viscosity of filtered-oilⅠincreased by 10. 2%and 57. 6%,but the fluctuation was less than that of pyrolysis-oilⅠ. GC/MS analysis of the bio-oils showed that less fluctuation in composition was observed in the filtered-oil Ⅰ. This indicated a positive impact of the hot filter on the quality of bio-oil.关键词
快速热解/热过滤/生物油/老化Key words
fast pyrolysis/hot filtration/bio-oil/aging test分类
化学化工引用本文复制引用
朱沈嘉,刘运权,王夺,叶跃元,李水荣..热过滤对流化床快速热解制取生物油产率和品质的影响[J].林产化学与工业,2015,(3):13-19,7.基金项目
国家“973”资助项目子课题(2012CB215306) （2012CB215306）
