EXPERIMENTAL STUDY ON BIO-OIL PYROLYSIS/GASIFICATION
The gasification of liquid bio-oil from biomass pyrolysis for synthesis gas with high quality was one of the most promising technologies of biomass utilization. The aim of this study was to understanding the mechanism of bio-oil gasification and the influence of operating parameters on the property of gas products. Firstly, the pyrolysis / gasification of bio-oil were performed using Thermo-gravimetric analyzer (TGA) with bio-oil from sawdust fast pyrolysis in fluidized bed as sample. It indicated that the pyrolysis of bio-oil can be divided into two stages, devolatilization (200-300℃) and carbonization (>300℃). The releasing behaviors of gas products from TGA were measured on-line coupled with Fourier Transform Infrared Spectroscopy (FTIR). The main gas products checked with FTIR were CO, CO2, CH4, H20 and light hydrocarbons, etc. Organics mainly evolved out at lower temperature (100-200℃), while the cracking of heavy hydrocarbon components took place at higher temperature (>200℃). Simultaneously, the gasification behavior was investigated in fixed bed gasification reactor under variant conditions with different temperature and residence time. The gas product evolving was checked using Micro-gas chromatograph. It was observed that the yield of CO and H2 increased with gasification temperature increasing from 600℃, and the maximum value was got at 800℃. The extension of residence time was not favorable for the upgrading of syngas quality. It is significant for the catching of bio-oil gasification. It is great for the utilization ofbiomass with higher quality.
Bio-oil pyrolysis/gasification TGA TG-FTIR fixed bed synthesis
Ying Gao Han-ping Chen Hai-ping Yang Rui-xue He Shi-hong Zhang Xian-hua WANG
State Key Laboratory of Coal Combustion,Huazhong University of Science and Technology,Wuhan,430074,P. R. China
国际会议
广州
英文
1080-1085
2008-12-03（万方平台首次上网日期，不代表论文的发表时间）