Modeling, Evaluating and Scaling up a Commercial Multilayer Claus Converter Based on Bench Scale Experiments

*Sepehr Sadighi orcid  -  1Catalysis Development Technologies Division, Research Institute of Petroleum Industry (RIPI), Iran, Islamic Republic of
Seyed Reza Seif Mohaddecy orcid  -  1Catalysis Development Technologies Division, Research Institute of Petroleum Industry (RIPI), Iran, Islamic Republic of
Mehdi Rashidzadeh orcid  -  1Catalysis Development Technologies Division, Research Institute of Petroleum Industry (RIPI), Iran, Islamic Republic of
Received: 6 Apr 2020; Revised: 23 May 2020; Accepted: 25 May 2020; Published: 1 Aug 2020; Available online: 30 Jul 2020.
Open Access Copyright (c) 2020 Bulletin of Chemical Reaction Engineering & Catalysis
License URL: http://creativecommons.org/licenses/by-sa/4.0

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Abstract

Industrial scale reactors work adiabatically and measuring their performance in an isothermal bench scale reactor is faced with uncertainties. In this research, based on kinetic models previously developed for alumina and titania commercial Claus catalysts, a multilayer bench scale model is constructed, and it is applied to simulate the behavior of an industrial scale Claus converter. It is shown that performing the bench scale isothermal experiments at the temperature of 307 ºC can reliably exhibit the activity of catalytic layers of an industrial Claus converter operating at the weighted average bed temperature (WABT) of 289 ºC. Additionally, an adiabatic model is developed for a target industrial scale Claus reactor, and it is confirmed that this model can accurately predict the temperature, and molar percentages of H2S and CS2. Based on simulation results, 20% of excess amount of Claus catalysts should be loaded to compensate their deactivation during the process cycle life. Copyright © 2020 BCREC Group. All rights reserved

 

Keywords: Sulfur recovery plant; Claus converter; Catalyst evaluation; Kinetic modeling; Scale up

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