EXPERIMENTAL STUDY OF NO REDUCTION BY BIOMASS GASIFICATION TAR
Reduction of NO by biomass gasification tar was investigated. Tar compositions were so complex that some typical tar model compounds were selected to reduce NO, according to the TG-MS analyses. Those tar model compounds were benzene, toluene, styrene and phenol. The four compounds were main compositions of tar, and they covered from the primary tar to the tertiary tar. The chemical kinetic modeling of NO reduction by a typical tar model compound, toluene, was studied, in order to discover the mechanism of NO reduction by tar. The validity of the model was proved, experimentally. The kinetic study indicated that tar tended to yield HCCO and C2H radicals. The reaction activity of the two radicals was higher than CHi (i=1, 2, 3) radicals, so that the two radicals were more important in NO reduction. Experimental study of NO reduction by the four typical tar model compounds, benzene, toluene, styrene and phenol, was carried out to analysis the experimental characteristics of them. The results of the experiments indicated that the bulk equivalence ratio, φ, and temperature are the main factors in NO reduction; the NO reduction ability of tar model compound with substituent was higher than benzene; toluene and styrene, which have hydrocarbon substituent, could reduce more amount of NO than acetylene under suitable conditions. Then more tar with hydrocarbon substituent was expected than benzene in the engineering application of biomass gasification gas rebuming with tar. The experimental results showed that tar could improve the NO reduction by biogas with tar with comparison to by biogas without tar.
Tar NO Rebuming Model compound Experimental study
Jia Duan Rui-zhi Zhang Chun-yuan Liu Yong-hao Luo
School of Mechanical and Power Engineering,Shanghai Jiao Tong University,Shanghai 200240,China
国际会议
广州
英文
1101-1105
2008-12-03（万方平台首次上网日期，不代表论文的发表时间）