LAPSE:2018.0192
Published Article
LAPSE:2018.0192
An Integrated Membrane Process for Butenes Production
July 30, 2018
Iso-butene is an important material for the production of chemicals and polymers. It can take part in various chemical reactions, such as hydrogenation, oxidation and other additions owing to the presence of a reactive double bond. It is usually obtained as a by-product of a petroleum refinery, by Fluidized Catalytic Cracking (FCC) of naphtha or gas-oil. However, an interesting alternative to iso-butene production is n-butane dehydroisomerization, which allows the direct conversion of n-butane via dehydrogenation and successive isomerization. In this work, a simulation analysis of an integrated membrane system is proposed for the production and recovery of butenes. The dehydroisomerization of n-butane to iso-butene takes place in a membrane reactor where the hydrogen is removed from the reaction side with a Pd/Ag alloys membrane. Afterwards, the retentate and permeate post-processing is performed in membrane separation units for butenes concentration and recovery. Four different process schemes are developed. The performance of each membrane unit is analyzed by appropriately developed performance maps, to identify the operating conditions windows and the membrane permeation properties required to maximize the recovery of the iso-butene produced. An analysis of integrated systems showed a yield of butenes higher than the other reaction products with high butenes recovery in the gas separation section, with values of molar concentration between 75% and 80%.
Keywords
integrated process, iso-butene production, Membranes
Suggested Citation
Melone L, Brunetti A, Drioli E, Barbieri G. An Integrated Membrane Process for Butenes Production. (2018). LAPSE:2018.0192
Author Affiliations
Melone L: Institute on Membrane Technology (ITM-CNR), National Research Council c/o, The University of Calabria, Cubo 17C, Via Pietro BUCCI, 87036 Rende CS, Italy
Brunetti A: Institute on Membrane Technology (ITM-CNR), National Research Council c/o, The University of Calabria, Cubo 17C, Via Pietro BUCCI, 87036 Rende CS, Italy [ORCID]
Drioli E: Institute on Membrane Technology (ITM-CNR), National Research Council c/o, The University of Calabria, Cubo 17C, Via Pietro BUCCI, 87036 Rende CS, Italy [ORCID]
Barbieri G: Institute on Membrane Technology (ITM-CNR), National Research Council c/o, The University of Calabria, Cubo 17C, Via Pietro BUCCI, 87036 Rende CS, Italy [ORCID]
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Journal Name
Processes
Volume
4
Issue
4
Article Number
E42
Year
2016
Publication Date
2016-11-15
Published Version
ISSN
2227-9717
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PII: pr4040042, Publication Type: Journal Article
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LAPSE:2018.0192
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doi:10.3390/pr4040042
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Jul 30, 2018
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