Cryogenic Removal of CO2 by Frost Formation from Biogas

Removal of carbon dioxide to upgrading biogas is possible by cryogenics and frost formation. In this work, it is targeted removing carbon dioxide by frost deposition (physical transition from gas to solid state) at low pressure and temperature from biogas, as well as assessing the impact of mass flo...

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Autores principales:	Sylvain Haddad, Rodrigo Rivera-Tinoco, Chakib Bouallou
Formato:	article
Lenguaje:	EN
Publicado:	AIDIC Servizi S.r.l. 2021
Materias:	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895
Acceso en línea:	https://doaj.org/article/393050ea1c244de5b9c27092d76e6ee6
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id	oai:doaj.org-article:393050ea1c244de5b9c27092d76e6ee6
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spelling	oai:doaj.org-article:393050ea1c244de5b9c27092d76e6ee62021-11-15T21:48:56ZCryogenic Removal of CO2 by Frost Formation from Biogas10.3303/CET21880242283-9216https://doaj.org/article/393050ea1c244de5b9c27092d76e6ee62021-11-01T00:00:00Zhttps://www.cetjournal.it/index.php/cet/article/view/11817https://doaj.org/toc/2283-9216Removal of carbon dioxide to upgrading biogas is possible by cryogenics and frost formation. In this work, it is targeted removing carbon dioxide by frost deposition (physical transition from gas to solid state) at low pressure and temperature from biogas, as well as assessing the impact of mass flow rate, temperature and the initial CO2 content in biogas on the carbon dioxide removal process. The Solid-Gas phase equilibrium between CH4 and CO2 is presented. It is followed by a sensitivity study of CO2 deposition on a flat plate and the assessment of different geometries of the heat exchanger generating frost. The global process including CO2 removal and biomethane liquefaction is simulated in AspenTech tools that are linked to a specific module modelling frost formation phenomenon. This module is coded in Dymola (Modelica language). Different operating modes of the heat exchanger are compared: thermal inertia or by direct cooling by nitrogen gas obtained after liquefaction of the biomethane. The temperature of the heat exchanger increases as CO2 deposits. Results show that cryogenic CO2 frost formation can be used for simultaneous liquefaction and upgrading of methane at 97% vol. minimum of purity and a reduction of cooling cycles on site by cold recovery from frost. This implies a reduction of energy intensity to remove carbon dioxide compared to conventional cryogenic technologies.Sylvain HaddadRodrigo Rivera-TinocoChakib BouallouAIDIC Servizi S.r.l.articleChemical engineeringTP155-156Computer engineering. Computer hardwareTK7885-7895ENChemical Engineering Transactions, Vol 88 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895
spellingShingle	Chemical engineering TP155-156 Computer engineering. Computer hardware TK7885-7895 Sylvain Haddad Rodrigo Rivera-Tinoco Chakib Bouallou Cryogenic Removal of CO2 by Frost Formation from Biogas
description	Removal of carbon dioxide to upgrading biogas is possible by cryogenics and frost formation. In this work, it is targeted removing carbon dioxide by frost deposition (physical transition from gas to solid state) at low pressure and temperature from biogas, as well as assessing the impact of mass flow rate, temperature and the initial CO2 content in biogas on the carbon dioxide removal process. The Solid-Gas phase equilibrium between CH4 and CO2 is presented. It is followed by a sensitivity study of CO2 deposition on a flat plate and the assessment of different geometries of the heat exchanger generating frost. The global process including CO2 removal and biomethane liquefaction is simulated in AspenTech tools that are linked to a specific module modelling frost formation phenomenon. This module is coded in Dymola (Modelica language). Different operating modes of the heat exchanger are compared: thermal inertia or by direct cooling by nitrogen gas obtained after liquefaction of the biomethane. The temperature of the heat exchanger increases as CO2 deposits. Results show that cryogenic CO2 frost formation can be used for simultaneous liquefaction and upgrading of methane at 97% vol. minimum of purity and a reduction of cooling cycles on site by cold recovery from frost. This implies a reduction of energy intensity to remove carbon dioxide compared to conventional cryogenic technologies.
format	article
author	Sylvain Haddad Rodrigo Rivera-Tinoco Chakib Bouallou
author_facet	Sylvain Haddad Rodrigo Rivera-Tinoco Chakib Bouallou
author_sort	Sylvain Haddad
title	Cryogenic Removal of CO2 by Frost Formation from Biogas
title_short	Cryogenic Removal of CO2 by Frost Formation from Biogas
title_full	Cryogenic Removal of CO2 by Frost Formation from Biogas
title_fullStr	Cryogenic Removal of CO2 by Frost Formation from Biogas
title_full_unstemmed	Cryogenic Removal of CO2 by Frost Formation from Biogas
title_sort	cryogenic removal of co2 by frost formation from biogas
publisher	AIDIC Servizi S.r.l.
publishDate	2021
url	https://doaj.org/article/393050ea1c244de5b9c27092d76e6ee6
work_keys_str_mv	AT sylvainhaddad cryogenicremovalofco2byfrostformationfrombiogas AT rodrigoriveratinoco cryogenicremovalofco2byfrostformationfrombiogas AT chakibbouallou cryogenicremovalofco2byfrostformationfrombiogas
_version_	1718426777562382336

Cryogenic Removal of CO2 by Frost Formation from Biogas

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