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Title: Conversion of methanol to lower olefins. Kinetic modeling, reactor simulation, and selection

Abstract

Reactor types for commercial-scale methanol-to-olefins (MTO) processes in the ethene mode, using a small-pore molecular-sieve catalyst, have been evaluated both qualitatively and quantitatively. A kinetic model has been developed via an iterative process of model formulation, parameter estimation, and model validation. The final model consists of 12 reactions involving 6 component lumps plus coke. Important factors are the occurrence of consecutive reactions and the effect of coke on both the activity and selectivity. This kinetic model has been implemented in mathematical models of various reactors for the estimation of product selectivities and main reactor dimensions. These formed the basis for a comparison of different reactor types for a commercial-scale process. A circulating fast fluidized-bed reactor and a turbulent fluidized-bed reactor emerged as the most promising reactor systems for MTO in the ethene mode; ethene/propene ratios of 1--1.5 can be achieved with realistic reactor dimensions.

Authors:
;  [1];  [2]
  1. Koninklijke/Shell-Lab., Amsterdam (Netherlands)
  2. Shell Internationale Chemie Maatschappij, The Hague (Netherlands)
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
183119
Resource Type:
Journal Article
Journal Name:
Industrial and Engineering Chemistry Research
Additional Journal Information:
Journal Volume: 34; Journal Issue: 11; Other Information: PBD: Nov 1995
Country of Publication:
United States
Language:
English
Subject:
10 SYNTHETIC FUELS; METHANOL; DEHYDRATION; ALKENES; SYNTHESIS; CHEMICAL REACTORS; MATHEMATICAL MODELS; CHEMICAL REACTION KINETICS; ETHYLENE; MOLECULAR SIEVES; CATALYTIC EFFECTS; PROPYLENE

Citation Formats

Bos, A N.R., Tromp, P J.J., and Akse, H N. Conversion of methanol to lower olefins. Kinetic modeling, reactor simulation, and selection. United States: N. p., 1995. Web. doi:10.1021/ie00038a018.
Bos, A N.R., Tromp, P J.J., & Akse, H N. Conversion of methanol to lower olefins. Kinetic modeling, reactor simulation, and selection. United States. https://doi.org/10.1021/ie00038a018
Bos, A N.R., Tromp, P J.J., and Akse, H N. 1995. "Conversion of methanol to lower olefins. Kinetic modeling, reactor simulation, and selection". United States. https://doi.org/10.1021/ie00038a018.
@article{osti_183119,
title = {Conversion of methanol to lower olefins. Kinetic modeling, reactor simulation, and selection},
author = {Bos, A N.R. and Tromp, P J.J. and Akse, H N},
abstractNote = {Reactor types for commercial-scale methanol-to-olefins (MTO) processes in the ethene mode, using a small-pore molecular-sieve catalyst, have been evaluated both qualitatively and quantitatively. A kinetic model has been developed via an iterative process of model formulation, parameter estimation, and model validation. The final model consists of 12 reactions involving 6 component lumps plus coke. Important factors are the occurrence of consecutive reactions and the effect of coke on both the activity and selectivity. This kinetic model has been implemented in mathematical models of various reactors for the estimation of product selectivities and main reactor dimensions. These formed the basis for a comparison of different reactor types for a commercial-scale process. A circulating fast fluidized-bed reactor and a turbulent fluidized-bed reactor emerged as the most promising reactor systems for MTO in the ethene mode; ethene/propene ratios of 1--1.5 can be achieved with realistic reactor dimensions.},
doi = {10.1021/ie00038a018},
url = {https://www.osti.gov/biblio/183119}, journal = {Industrial and Engineering Chemistry Research},
number = 11,
volume = 34,
place = {United States},
year = {Wed Nov 01 00:00:00 EST 1995},
month = {Wed Nov 01 00:00:00 EST 1995}
}