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Poisoning of SCR Catalysts used in Municipal Waste Incineration Applications
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology.ORCID iD: 0000-0002-4162-3680
Lund University .
2017 (English)In: Topics in catalysis, ISSN 1022-5528, E-ISSN 1572-9028, Vol. 60, no 17-18, p. 1306-1316Article in journal (Refereed) Published
Abstract [en]

A commercial vanadia, tungsta on titania SCRcatalyst was poisoned in a side stream in a waste incinerationplant. The effect of especially alkali metal poisoning was observed resulting in a decreased activity at long times of exposure. The deactivation after 2311 h was 36% whilet he decrease in surface area was only 7.6%. Thus the major cause for deactivation was a chemical blocking of acidic sites by alkali metals. The activation–deactivation model showed excellent agreement with experimental data. The model suggests that the original adsorption sites, from the preparation of the catalyst, are rapidly deactivated but are replaced by a new population of adsorption sites due to activation of the catalyst surface by sulphur compounds (SO2, SO3) in the flue gas.

Place, publisher, year, edition, pages
Springer, 2017. Vol. 60, no 17-18, p. 1306-1316
Keywords [en]
Poisoning, Waste incineration, SCR catalyst, Modelling of activation and deactivation
National Category
Chemical Process Engineering Energy Systems Bioenergy Renewable Bioenergy Research
Research subject
Technology (byts ev till Engineering), Bioenergy Technology
Identifiers
URN: urn:nbn:se:lnu:diva-66849DOI: 10.1007/s11244-017-0816-yISI: 000413848700005Scopus ID: 2-s2.0-85021815107OAI: oai:DiVA.org:lnu-66849DiVA, id: diva2:1120782
Conference
17th Nordic Symposium on Catalysis, 2016, Lund Sweden
Available from: 2017-07-07 Created: 2017-07-07 Last updated: 2023-05-12Bibliographically approved

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