Influence of Catalyst and Temperature on Gasification Performance by Externally Heated Gasifier

Yu Feng, Bo Xiao, Klaus Goerner, Gong Cheng, Jingbo Wang

.
School of Environmental Science & Engineering, Huazhong University of Science and Technology, Wuhan, China.

DOI: 10.4236/sgre.2011.23021                

Abstract

In the present study the catalytic steam gasification of biomass to produce hydrogen-rich gas with calcined dolomite and Nano-NiO/γ-Al₂O₃ as catalyst in an externally heated fixed bed reactor was investigated. The influence of the catalyst and reactor temperature on yield and product composition was studied at the temperature range of 700^oC - 900^oC. Over the ranges of experimental conditions examined, calcined dolomite revealed better catalytic performance, at the presence of steam, tar was completely decomposed as temperature increases from 800^oC to 900^oC. Higher temperature resulted in more H₂ and CO₂ production, and dry gas yield. The highest H₂ content of 51.02 mol%, and the highest H₂ yield of 1.66 m³/kg biomass were observed at the highest temperature level of 900^oC.

Keywords

Hydrogen Rich Gas, Biomass, Steam Gasification, Dolomite, Catalyst

Conflicts of Interest

The authors declare no conflicts of interest.

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