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Recovery of Methanol during Natural Gas Dehydration Using Polymeric Membranes: Modeling of the Process

A significant proportion of natural gas (NG) is produced in cold climates, where conditions are relevant to the formation of gas hydrates in raw gas stream. Methanol is often used as an effective inhibitor of hydrate formation. Further conditioning of NG includes dehydration, and the most common pro...

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Autores principales: Miroshnichenko, Daria, Teplyakov, Vladimir, Shalygin, Maxim
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9786195/
https://www.ncbi.nlm.nih.gov/pubmed/36557083
http://dx.doi.org/10.3390/membranes12121176
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author Miroshnichenko, Daria
Teplyakov, Vladimir
Shalygin, Maxim
author_facet Miroshnichenko, Daria
Teplyakov, Vladimir
Shalygin, Maxim
author_sort Miroshnichenko, Daria
collection PubMed
description A significant proportion of natural gas (NG) is produced in cold climates, where conditions are relevant to the formation of gas hydrates in raw gas stream. Methanol is often used as an effective inhibitor of hydrate formation. Further conditioning of NG includes dehydration, and the most common process of water vapor removal from NG is absorption. Absorption also provides removal of methanol vapors, which allows it reuse. The membrane method of natural gas dehydration is considered as a promising alternative; however, the study of methanol recovery by the membrane method, simultaneously to the dehydration of NG, has not been carried out previously. In addition, data on methanol vapor transfer in gas separation polymer membranes are almost absent in the literature. This paper evaluates the permeability coefficients of methanol vapors for several polymer materials, which are applied to the production of industrial membranes (PPO, PSf, CA). Mathematical modeling of the membrane process of NG dehydration with simultaneous recovery of methanol was performed. The dependencies of membrane area, methanol recovery and energy consumption for methane recycling and recompression on the process parameters are calculated. Obtained data show that the recovery of methanol during membrane dehydration of NG varies in the range 57–95%. The lowest values of membrane area and specific energy consumption were found for PPO based membrane.
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spelling pubmed-97861952022-12-24 Recovery of Methanol during Natural Gas Dehydration Using Polymeric Membranes: Modeling of the Process Miroshnichenko, Daria Teplyakov, Vladimir Shalygin, Maxim Membranes (Basel) Article A significant proportion of natural gas (NG) is produced in cold climates, where conditions are relevant to the formation of gas hydrates in raw gas stream. Methanol is often used as an effective inhibitor of hydrate formation. Further conditioning of NG includes dehydration, and the most common process of water vapor removal from NG is absorption. Absorption also provides removal of methanol vapors, which allows it reuse. The membrane method of natural gas dehydration is considered as a promising alternative; however, the study of methanol recovery by the membrane method, simultaneously to the dehydration of NG, has not been carried out previously. In addition, data on methanol vapor transfer in gas separation polymer membranes are almost absent in the literature. This paper evaluates the permeability coefficients of methanol vapors for several polymer materials, which are applied to the production of industrial membranes (PPO, PSf, CA). Mathematical modeling of the membrane process of NG dehydration with simultaneous recovery of methanol was performed. The dependencies of membrane area, methanol recovery and energy consumption for methane recycling and recompression on the process parameters are calculated. Obtained data show that the recovery of methanol during membrane dehydration of NG varies in the range 57–95%. The lowest values of membrane area and specific energy consumption were found for PPO based membrane. MDPI 2022-11-22 /pmc/articles/PMC9786195/ /pubmed/36557083 http://dx.doi.org/10.3390/membranes12121176 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Miroshnichenko, Daria
Teplyakov, Vladimir
Shalygin, Maxim
Recovery of Methanol during Natural Gas Dehydration Using Polymeric Membranes: Modeling of the Process
title Recovery of Methanol during Natural Gas Dehydration Using Polymeric Membranes: Modeling of the Process
title_full Recovery of Methanol during Natural Gas Dehydration Using Polymeric Membranes: Modeling of the Process
title_fullStr Recovery of Methanol during Natural Gas Dehydration Using Polymeric Membranes: Modeling of the Process
title_full_unstemmed Recovery of Methanol during Natural Gas Dehydration Using Polymeric Membranes: Modeling of the Process
title_short Recovery of Methanol during Natural Gas Dehydration Using Polymeric Membranes: Modeling of the Process
title_sort recovery of methanol during natural gas dehydration using polymeric membranes: modeling of the process
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9786195/
https://www.ncbi.nlm.nih.gov/pubmed/36557083
http://dx.doi.org/10.3390/membranes12121176
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