Abstract
Biomass-derived gasification gas contains tar that can plug the particulate filters, and ammonia that forms nitrogen oxides when burned. The use of a catalytic gas purification unit before particulate filters to decompose tar and ammonia is a promising method to solve these problems.
Sulphur poisoning studies of nickel catalyst were performed in fixed-bed reactors at 800-950°C under 1-20 bar pressure with real and simulated gasification gas mixtures containing various amounts of H2S. The results indicated that the operation temperature had a great influence on the poisoning effect of sulphur. The higher the temperature the more sulphur the gas may contain without Catalyst Deactivation. The ammonia-decomposing activity declined due to sulphur more than the tar-decomposing activity. The catalyst was regenerated by removing H2S from the gas and the regeneration was enhanced by increasing the steam content of the gas.
Sulphur poisoning studies of nickel catalyst were performed in fixed-bed reactors at 800-950°C under 1-20 bar pressure with real and simulated gasification gas mixtures containing various amounts of H2S. The results indicated that the operation temperature had a great influence on the poisoning effect of sulphur. The higher the temperature the more sulphur the gas may contain without Catalyst Deactivation. The ammonia-decomposing activity declined due to sulphur more than the tar-decomposing activity. The catalyst was regenerated by removing H2S from the gas and the regeneration was enhanced by increasing the steam content of the gas.
Original language | English |
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Title of host publication | Catalyst Deactivation 1994 |
Subtitle of host publication | Proceedings of the 6th International Symposium |
Editors | B. Delmon, G.F. Froment |
Place of Publication | Amsterdam |
Publisher | Elsevier |
Pages | 499-506 |
ISBN (Print) | 978-0-444-81682-5 |
DOIs | |
Publication status | Published - 1994 |
MoE publication type | A4 Article in a conference publication |
Event | 6th International Symposium on Catalyst Deactivation - Ostend, Belgium Duration: 3 Oct 1994 → 5 Oct 1994 |
Publication series
Series | Studies in Surface Science and Catalysis |
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Volume | 88 |
ISSN | 0167-2991 |
Conference
Conference | 6th International Symposium on Catalyst Deactivation |
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Country/Territory | Belgium |
City | Ostend |
Period | 3/10/94 → 5/10/94 |
Keywords
- gasification