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Selective catalytic oxidation of ammonia by nitrogen oxides in a model synthesis gas
Lund University.
Linnaeus University, Faculty of Technology, Department of Building and Energy Technology.ORCID iD: 0000-0002-4162-3680
2013 (English)In: Fuel, ISSN 0016-2361, E-ISSN 1873-7153, Vol. 105, 331-337 p.Article in journal (Refereed) Published
Abstract [en]

Synthesis gas generated by the gasification of nitrogen-containing hydrocarbons will contain ammonia. This is a catalyst poison and elevated levels of nitrogen oxides (NOX) will be produced if the synthesis gas is combusted. This paper presents a study of the selective oxidation of ammonia in reducing environments. The concept is the same as in traditional selective catalytic reduction, where NOX are removed from flue gas by reaction with injected ammonia over a catalyst. Here, a new concept for the removal of ammonia is demonstrated by reaction with injected NOX over a catalyst. The experiments were carried out in a model synthesis gas consisting of CO, CO2, H-2, N-2 and NH3/NOX. The performance of two catalysts, V2O5/WO3/TiO2 and H-mordenite, were evaluated. On-site generation of NOX by nitric acid decomposition was also investigated and tested. The results show good conversion of ammonia under the conditions studied for both catalysts, and with on-site generated NOX. (C) 2012 Elsevier Ltd. All rights reserved.

Place, publisher, year, edition, pages
2013. Vol. 105, 331-337 p.
Keyword [en]
SCR, Synthesis gas, V2O5/WO3/TiO2, H-mordenite, Ammonia removal
National Category
Chemical Engineering Mechanical Engineering
Research subject
Technology (byts ev till Engineering), Bioenergy Technology
Identifiers
URN: urn:nbn:se:lnu:diva-23370DOI: 10.1016/j.fuel.2012.08.025ISI: 000311935400033Scopus ID: 2-s2.0-84870464049OAI: oai:DiVA.org:lnu-23370DiVA: diva2:584704
Available from: 2013-01-09 Created: 2013-01-09 Last updated: 2017-12-06Bibliographically approved

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