Hydrogen production from steam gasification of corn straw catalyzed by blast furnace gas ash
| Autor: | Shengqiang Shen, Yisheng Chen, Yunji Pang, Donling Yu, Jin Guang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Wood gas generator Renewable Energy Sustainability and the Environment Pellets Energy Engineering and Power Technology 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Pulp and paper industry 01 natural sciences Methane 0104 chemical sciences chemistry.chemical_compound Fuel Technology chemistry Volume (thermodynamics) Heat of combustion 0210 nano-technology Water vapor Blast furnace gas Hydrogen production |
| Zdroj: | International Journal of Hydrogen Energy. 45:17191-17199 |
| ISSN: | 0360-3199 |
| DOI: | 10.1016/j.ijhydene.2019.02.235 |
| Popis: | A lab scale gasifier was built to perform the gasification experiment. The effects of temperature and steam flow on the process were investigated, and the effects of the addition of blast furnace gas ash (BFGA) on product composition, the value of H2/(CO + CO2), the lower heating value (LHV) of product gas, and productivity are summarized. The experimental results clearly indicate that the addition of BFGA in the steam gasification of corn straw pellets effectively enhances the ability of the downdraft gasifier to produce hydrogen-rich gas. Compared with the non-catalytic gasification process, the addition of BFGA promotes the formation of H2, inhibits the generation of methane, CH4, and other hydrocarbon gases, CnHm, and increases the H2/(CO + CO2) ratio. Unlike the process without the BFGA, the LHV of the product gas with BFGA increases with increasing temperature. When the water vapor volume was 0.75 kg/h, the gas production rate was the same at 850 °C with BFGA and at 950 °C without ash gas. The addition of BFGA clearly leads to a significant improvement in the ability of gasifiers to produce hydrogen-rich gas. |
| Databáze: | OpenAIRE |
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