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Modeling the deactivation by metal deposition of heavy oil hydrotreating catalyst

Paper ID Volume ID Publish Year Pages File Format Full-Text
54405 47008 2014 7 PDF Available
Title
Modeling the deactivation by metal deposition of heavy oil hydrotreating catalyst
Abstract

•Catalyst deactivation during hydrotreating of heavy oil was studied.•Pore plugging model was employed.•Kinetics and deactivation parameters were estimated.•Good agreement between simulated/experimental data was found at short and long TOS.

Modeling the deactivation of heavy oil hydrotreating catalyst was carried out by using a pore plugging model. Experimental data were obtained at constant temperature of 385 °C, pressure of 9.8 MPa, LHSV of 0.25 h and 5000 scf H2/bbl oil. Kinetics was derived from experimental data collected at short times-on-stream (TOS) whereas data affected by pore plugging by metal deposition was obtained between 200 and 2200 h TOS. The model employed was capable of predicting with confidence the profiles of diminution of metal removal (nickel and vanadium) at short and long values of time-on-stream.

Keywords
Deactivation; Pore plugging; Heavy oil
First Page Preview
Modeling the deactivation by metal deposition of heavy oil hydrotreating catalyst
Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volumes 220–222, March 2014, Pages 221–227
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis