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Processes for demetalization of fluid cracking catalysts
1988 (English)In: Fluid catalytic cracking: role in modern refining : developed from a symposium sponsored by the Division of Petroleum Chemistry, Inc., at the 194th Meeting of the American Chemical Society, New Orleans, Louisiana, August 30 - September 4, 1987 / [ed] Mario L. Occell, Washington, DC: American Chemical Society (ACS), 1988, 229-236 p.Conference paper (Refereed)
Abstract [en]

Three processes, Demet III, Demet X and New Demet, for demetallization of metal poisoned octacat fluid cracking catalysts were investigated. These processes removed a significant part of the V (30-40%) from the catalyst. The New Demet and Demet III were very effective in removing Ni (88% and 80%, respectively) while practically no Ni could be removed by Demet X. The Demet procedures also proved effective in removing other contaminants like Fe and Cu. All Demet methods resulted in increased cracking activities as determined by the micro-activity test. The conversions increased from 65% for the untreated catalyst to 76-78% for samples treated according to the different Demet procedures. The increase in activity was accompanied by a corresponding increase in gasoline yield of 5.0-6.5%.

Place, publisher, year, edition, pages
Washington, DC: American Chemical Society (ACS), 1988. 229-236 p.
A C S Symposium Series, ISSN 0097-6156 ; 375
URN: urn:nbn:se:ltu:diva-40263Local ID: f5412c20-a9d9-11de-8293-000ea68e967bISBN: 0-8412-1534-0 (print)OAI: diva2:1013785
Meeting of the American Chemical Society : 30/08/1987 - 04/09/1987
Upprättat; 1988; 20090925 (ysko)Available from: 2016-10-03 Created: 2016-10-03

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