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Poisoning of SCR Catalysts used in Municipal Waste Incineration Applications
Linnéuniversitetet, Fakulteten för teknik (FTK), Institutionen för byggd miljö och energiteknik (BET).ORCID-id: 0000-0002-4162-3680
Lund University .
2017 (engelsk)Inngår i: Topics in catalysis, ISSN 1022-5528, E-ISSN 1572-9028, Vol. 60, nr 17-18, s. 1306-1316Artikkel i tidsskrift (Fagfellevurdert) 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 poisoningwas observed resulting in a decreased activity at long timesof exposure. The deactivation after 2311 h was 36% whilethe decrease in surface area was only 7.6%. Thus the majorcause for deactivation was a chemical blocking of acidicsites by alkali metals. The activation–deactivation modelshowed excellent agreement with experimental data. Themodel suggests that the original adsorption sites, fromthe preparation of the catalyst, are rapidly deactivated butare replaced by a new population of adsorption sites dueto activation of the catalyst surface by sulphur compounds(SO2, SO3)in the flue gas.

sted, utgiver, år, opplag, sider
Springer, 2017. Vol. 60, nr 17-18, s. 1306-1316
Emneord [en]
Poisoning, Waste incineration, SCR catalyst, Modelling of activation and deactivation
HSV kategori
Forskningsprogram
Teknik, Bioenergiteknik/Energi- och Miljöteknik
Identifikatorer
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
Konferanse
17th Nordic Symposium on Catalysis, 2016, Lund Sweden
Tilgjengelig fra: 2017-07-07 Laget: 2017-07-07 Sist oppdatert: 2019-08-29bibliografisk kontrollert

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