Application of a three-stage approach for modeling the complete period of catalyst deactivation during hydrotreating of heavy oil

Ignacio Elizalde, Jorge Ancheyta

Research output: Contribution to conferencePaper

13 Scopus citations

Abstract

© 2014 Elsevier Ltd. All rights reserved. Modeling the catalyst deactivation due to hydrodeasphaltenization (HDAsph), hydrodemetallization (HDM) and hydrodesulfurization (HDS) reactions with time-on-stream (TOS) was carried out by using a model that considers three deactivation stages: start-of-run (SOR), middle-of-run (MOR) and end-of-run (EOR). Experimental data of kinetics, intra-particle mass transfer and conversion affected by deactivation phenomena were obtained from laboratory scale reactor. Loss of activity was studied at constant operating conditions of temperature, pressure, liquid hourly space velocity (LHSV) and H2-to-oil ratio for a range of time-on-stream. It is found that different deactivation patterns are obtained depending on the considered reaction. It is predicted that catalyst exhibits higher rate of deactivation for HDS than for HDM at long TOS.
Original languageAmerican English
Pages45-51
Number of pages39
DOIs
StatePublished - 1 Jan 2014
Externally publishedYes
EventFuel -
Duration: 15 Dec 2014 → …

Conference

ConferenceFuel
Period15/12/14 → …

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