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Study on Biomass Gasification Coupling with Catalytic Cracking of Tar

文献类型: 会议论文

第一作者: Qing-li Xu

作者: Qing-li Xu 1 ; Hong-yu Li 1 ; Wei Qi 1 ; Ting-chen Li 1 ; Su-Ping Zhang 1 ; Zheng-wei Ren 1 ; Yong-jie Yan 1 ;

作者机构: 1.Research Center for Biomass Energy, East China University of Science and Technology, Shanghai, 200237

关键词: biomass;tar;gasification;catalytic cracking

会议名称: International Conference on Biomass Energy Technologies

主办单位:

页码: 20-25

摘要: Biomass gasification coupling with catalytic cracking of tar was carried out in the installation consisting of a fluidized bed reactor and a two-stage fixed bed reactor. The feedstock was sawdust and the cracking catalyst included calcined dolomite and the nickel- based reforming catalyst. The results showed that the mole ratio of H_2/CO (H/C) in the gas product is increased rapidly with the increase of gasification temperature and the weight ratio of S/B (steam to biomass) in the feedstock, but catalytic cracking temperature had little effect on H_2/CO. Meanwhile, different kinds of catalysts would cause different ratios of H/C. By employing two-stage catalytic cracking, i.e., calcined dolomite in stage I , and nickel-based catalyst in stage II , the conversion of tar cracking reached up to 96.70%, the yield of H_2 and CO increased. Moreover, it slowed down the deactivation of nickel-based reforming catalyst and extended its service life.

分类号: TK6

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