Effect of steam partial pressure on gasification rate and gas composition of product gas from catalytic steam gasification of HyperCoal
- National Institute of Advanced Industrial Science and Technology, Ibaraki (Japan). Advanced Fuel Group
HyperCoal was produced from coal by a solvent extraction method. The effect of the partial pressure of steam on the gasification rate and gas composition at temperatures of 600, 650, 700, and 750{sup o}C was examined. The gasification rate decreased with decreasing steam partial pressure. The reaction order with respect to steam partial pressure was between 0.2 and 0.5. The activation energy for the K{sub 2}CO{sub 3}-catalyzed HyperCoal gasification was independent of the steam partial pressure and was about 108 kJ/mol. The gas composition changed with steam partial pressure and H{sub 2} and CO{sub 2} decreased and CO increased with decreasing steam partial pressure. By changing the partial pressure of the steam, the H{sub 2}/CO ratio of the synthesis gas can be controlled. 18 refs., 7 figs., 2 tabs.
- OSTI ID:
- 21261679
- Journal Information:
- Energy and Fuels, Vol. 23, Issue 10; ISSN 0887-0624
- Country of Publication:
- United States
- Language:
- English
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