Attrition due to mixing of hot and cold FCC catalyst particles.

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Title Attrition due to mixing of hot and cold FCC catalyst particles.
Author Whitcombe, Joshua Matthew; Agranovski, Igor E; Braddock, Roger David
Journal Name Powder Technology
Year Published 2003
Place of publication Switzerland
Publisher Elsevier Science SA
Abstract The formation of fines in a fluidized catalytic cracker unit (FCCU) due to catalyst attrition and fracture is a major source of catalyst loss. In addition to the generation of fine particles, a significant amount of aerosols have been identified in the stack emission of FCCUs. To determine the source of these aerosols, samples of fresh and equilibrium (e-cat) type catalysts were heated up to 600 °C and mixed with cold samples, simulating the thermal shock and particle fracture, which occurs inside an FCCU when catalyst is added. The thermal shock in the experiments produced fine particles and aerosols, which were captured on filters and analyzed using scanning electron microscopy (SEM) imaging and atomic absorption tests. It was found that significant quantities of metal rich aerosols were generated by the thermal shock. This production of fine particles and aerosols is a new phenomenon that can help explain excessive catalyst emissions from operating FCCUs.
Peer Reviewed Yes
Published Yes
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Copyright Statement Copyright 2003 Elsevier : Reproduced in accordance with the copyright policy of the publisher : This journal is available online - use hypertext links.
Volume 137
Page from 120
Page to 130
ISSN 0032-5910
Date Accessioned 2004-03-22
Language en_AU
Faculty Faculty of Environmental Sciences
Subject PRE2009-Environmental Engineering
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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