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Attrition resistance of a VPO catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
42256 45917 2010 10 PDF Available
Title
Attrition resistance of a VPO catalyst
Abstract

The attrition propensity of used and fresh vanadium phosphorous oxide (VPO) catalyst subjected to mechanical stress in a gas cyclone and in a bubbling-fluidized bed with and without submerged gas jet has been investigated. Attrition models for the investigated sources of attrition have been adopted from literature. The attrition tests confirmed the relationship between the operating conditions and the steady-state attrition rates under abrasion conditions. The material specific attrition rate constants for the three sources of attrition have been determined. These constants were compared with those measured for other catalyst materials in previous attrition tests. It is found, that the investigated VPO catalyst has a low attrition propensity comparable to FCC-catalyst, when subjected to mechanical stress in gas cyclone and in fluidized bed with submerged gas jet. The attrition rate constant of the VPO catalyst subjected to mechanical stress in the bubbling-fluidized bed seems to be slightly higher than those measured for FCC-catalysts. However, the deviation is in the range of the experimental error. In agreement with previous findings for other catalysts the cyclone attrition rate constant for fresh VPO catalyst is higher than for used catalyst.

Graphical abstractThe attrition propensity of a VPO catalyst subjected to mechanical stress in a gas cyclone and in a bubbling-fluidized bed with and without submerged gas jet has been investigated. The material specific attrition rate constants were compared with available literature data. The investigated VPO catalyst has a low attrition propensity which is comparable to FCC-catalyst.Figure optionsDownload full-size imageDownload high-quality image (103 K)Download as PowerPoint slide

Keywords
FCC, fluidized cracking catalyst; PSD, particle size distribution; SEM, scanning electron microscope; VPO, vanadium phosphorous oxideAttrition; Abrasion; Cyclone; Fluidized bed; VPO catalyst
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Publisher
Database: Elsevier - ScienceDirect
Journal: Applied Catalysis A: General - Volume 376, Issues 1–2, 31 March 2010, Pages 56–65
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
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Full-text PDF Download
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Any Questions? feel free to contact us