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《Journal of Zhejiang University(Engineering Science)》 2009-01
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Biomass entrained flow gasification and residue behavior

ZHOU Jing-song,ZHAO Hui,CAO Xiao-wei,LUO Zhong-yang,CEN Ke-fa(State Key Laboratory of Clean Energy Utilization,Zhejiang University,Hangzhou 310027,China)  
A lab-scale biomass entrained flow gasification system was used to test sawdust gasification in order to investigate the effects of reaction temperature and the mass ratio of oxygen to biomass on biomass gasification performance including gas composition,carbon conversion,products distribution and solid residue behavior.Results showed that H2 volume fraction increased and CO2 volume fraction decreased with the reaction temperature increasing;syn-gas composition in high temperature(1 000~1 400 ℃) reached above 80%.CH4 volume fraction increased firstly and then decreased with the reaction temperature increasing,at last CH4 volume fraction was very little at 1 400 ℃.The liquid product mass fraction reached only about 8%~10% at 1 400 ℃,which indicated that the tar content was very low.The carbon conversion rate increased to a maximum value 95% at 1 400 ℃ with the reaction temperature increasing;the high carbon conversion rate appeared between 600 ℃ and 800 ℃.The gas product yield rate increased with the reaction temperature increasing and it reached to a maximum value 91% at 1 400 ℃.
【Fund】: 国家自然科学基金资助项目(90610035);; 国家“973”重点基础研究发展计划资助项目(2007CB210200)
【CateGory Index】: TK6
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