Integrated gasification and catalytic reforming syngas production from corn straw with mitigated greenhouse gas emission potential
2019
Hu, Jianjun | Li, Dun | Lee, D. J. (Duu-Jong) | Zhang, Quanguo | Wang, Wei | Zhao, Shuheng | Zhang, Zhiping | He, Chao
The syngas that is produced from waste biomass often has high levels of CH₄ and CO₂, which are greenhouse gases. This investigation presents an integrated gasification and catalytic reforming process with a closed gas loop that can improve quality of syngas from corn straw and mitigate CH₄ and CO₂ emission. The effects of the support type, reforming temperature, steam-to-biomass (S/B) ratio, and catalyst-to-biomass ratio (C/B) ratio on gas yield and composition were experimentally examined with waste corn straw as the feedstock gasified at 850 °C in the proposed closed-loop apparatus. Reformation of syngas using Ni/γ-Al₂O₃ at 850 °C, S/B = 1 and C/B = 0.5 yielded 1.16 m³/kg of syngas, which contained 48.5% H₂, 33.9% CO, 12.2% CO₂ and 5.3% CH₄, corresponding to 71.0% and 81.5% enhancements of the first two and −77.8% and −58.1% reductions of the last two components.
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