期刊
ENERGY & FUELS
卷 34, 期 2, 页码 1131-1136出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.energyfuels.9b02177
关键词
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资金
- National Key R&D Program of China [2018YEE0106400]
- Natural Science Foundation of Shandong Province of China [ZR2019MEE069, ZR2019MB061, ZR2016YL010, ZR2016YL012]
- Shandong Provincial Key Research and Development Plan [2018GGX104028, 2018GGX104026]
Thermochemical conversion technology for the resource utilization of biomass can not only treat wastes polluting the environment but also efficiently generate hydrogen-rich gas for industrial applications. In this paper, the simulation calculation and experimental studies were employed to investigate the catalytic pyrolysis of herb residues for the preparation of hydrogen-rich gas. The results of thermogravimetry-Fourier transform infrared, kinetic, and thermodynamic studies showed that the catalytic pyrolysis of herb residues by 10 wt % Ni/CaO catalyst exhibited the lowest apparent activation energy compared to pyrolysis catalyzed with CaO or no catalyst. Under the catalysis of 10 wt % Ni/CaO and the temperature range of 500-700 degrees C, the content of H-2 in the catalytic pyrolysis gas products of herb residues was higher, while the content of CO2 was lower. Furthermore, in the presence of 10 wt % Ni/CaO catalyst, the catalytic pyrolysis experiment of herb residues in a moving bed reactor was carried out at 500-700 degrees C. The results showed that the distribution of hydrogen-rich gas composition with an increasing temperature was consistent with the thermodynamic simulation results. Specifically, with a rising pyrolysis temperature, the H-2 content increased initially and then decreased, which reached the highest ratio at 650 degrees C with an experimental value of 67.31 vol %.
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