Influence of Catalyst and Temperature on Gasification Performance by Externally Heated Gasifier
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- 2 School of Environmental Science & Engineering, Huazhong University of Science and Technology, Wuhan, China
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Abstract
In the present study the catalytic steam gasification of biomass to produce hydrogen-rich gas with calcined dolomite and Nano-NiO/γ-Al<sub>2</sub>O<sub>3</sub> 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<sup>o</sup>C - 900<sup>o</sup>C. 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<sup>o</sup>C to 900<sup>o</sup>C. Higher temperature resulted in more H<sub>2</sub> and CO<sub>2</sub> production, and dry gas yield. The highest H<sub>2</sub> content of 51.02 mol%, and the highest H<sub>2</sub> yield of 1.66 m<sup>3</sup>/kg biomass were observed at the highest temperature level of 900<sup>o</sup>C.
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