Syngas methanation from the supercritical water reforming of glycerol

An overall heat-integrated process of SCW (supercritical water) reforming of glycerol for methanation of the syngas obtained and power generation is proposed and analyzed. Methanation is the methane synthesis from the hydrogenation of CO and CO2. The SCW reforming is performed at 240 bars. Reforming...

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Autores: Serrera, Ana, Gutiérrez Ortiz, Francisco Javier, Ollero de Castro, Pedro Antonio
Tipo de recurso: artículo
Estado:Versión aceptada para publicación
Fecha de publicación:2014
País:España
Institución:Universidad de Sevilla (US)
Repositorio:idUS. Depósito de Investigación de la Universidad de Sevilla
OAI Identifier:oai:idus.us.es:11441/172244
Acceso en línea:https://hdl.handle.net/11441/172244
https://doi.org/10.1016/j.energy.2014.08.056
Access Level:acceso abierto
Palabra clave:Methane
Syngas
Methanation
Reforming
Supercritical water
Glycerol
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spelling Syngas methanation from the supercritical water reforming of glycerolSerrera, AnaGutiérrez Ortiz, Francisco JavierOllero de Castro, Pedro AntonioMethaneSyngasMethanationReformingSupercritical waterGlycerolAn overall heat-integrated process of SCW (supercritical water) reforming of glycerol for methanation of the syngas obtained and power generation is proposed and analyzed. Methanation is the methane synthesis from the hydrogenation of CO and CO2. The SCW reforming is performed at 240 bars. Reforming temperatures from 700 °C to 900 °C and glycerol feed concentrations between 25 wt.% and 50 wt.%, needed to reach an energy self-sufficient process, are studied. For methanation, three adiabatic, fixed-bed reactors are connected in series with intermediate gas cooling, operating at 30 bars. The exit temperatures of these reactors range from 600 °C to 300 °C, respectively. The feed for the methanation section is previously conditioned by a Pressure Swing Adsorption unit to achieve a stoichiometric number of 3. The recommended operating conditions are a reforming temperature of 800 °C and a glycerol concentration of 33 wt.% to obtain 0.166 kg CH4/kg glycerol, 0.433 kWe/kg glycerol and an overall energy efficiency of 61.6%, which may increase up to 76.1% if the hot water leaving the process at 90 °C is considered (cogeneration water). The results of this process were compared to those of the methanol synthesis, previously published, resulting in a better performance, because the carbon proportion converted into methane is higher than into methanol from SCW reforming of glycerol, and the higher specific overall value for the methane production, which considers the price of the product and the electricity jointly.ElsevierIngeniería Química y AmbientalMinisterio de Ciencia y Tecnología (MCYT). España2014info:eu-repo/semantics/articleinfo:eu-repo/semantics/acceptedVersionapplication/pdfapplication/pdfhttps://hdl.handle.net/11441/172244https://doi.org/10.1016/j.energy.2014.08.056reponame:idUS. Depósito de Investigación de la Universidad de Sevillainstname:Universidad de Sevilla (US)InglésEnergy, 76, 584-592.ENE2009-13755https://www.sciencedirect.com/science/article/pii/S036054421400992Xinfo:eu-repo/semantics/openAccessoai:idus.us.es:11441/1722442026-06-17T12:51:07Z
dc.title.none.fl_str_mv Syngas methanation from the supercritical water reforming of glycerol
title Syngas methanation from the supercritical water reforming of glycerol
spellingShingle Syngas methanation from the supercritical water reforming of glycerol
Serrera, Ana
Methane
Syngas
Methanation
Reforming
Supercritical water
Glycerol
title_short Syngas methanation from the supercritical water reforming of glycerol
title_full Syngas methanation from the supercritical water reforming of glycerol
title_fullStr Syngas methanation from the supercritical water reforming of glycerol
title_full_unstemmed Syngas methanation from the supercritical water reforming of glycerol
title_sort Syngas methanation from the supercritical water reforming of glycerol
dc.creator.none.fl_str_mv Serrera, Ana
Gutiérrez Ortiz, Francisco Javier
Ollero de Castro, Pedro Antonio
author Serrera, Ana
author_facet Serrera, Ana
Gutiérrez Ortiz, Francisco Javier
Ollero de Castro, Pedro Antonio
author_role author
author2 Gutiérrez Ortiz, Francisco Javier
Ollero de Castro, Pedro Antonio
author2_role author
author
dc.contributor.none.fl_str_mv Ingeniería Química y Ambiental
Ministerio de Ciencia y Tecnología (MCYT). España
dc.subject.none.fl_str_mv Methane
Syngas
Methanation
Reforming
Supercritical water
Glycerol
topic Methane
Syngas
Methanation
Reforming
Supercritical water
Glycerol
description An overall heat-integrated process of SCW (supercritical water) reforming of glycerol for methanation of the syngas obtained and power generation is proposed and analyzed. Methanation is the methane synthesis from the hydrogenation of CO and CO2. The SCW reforming is performed at 240 bars. Reforming temperatures from 700 °C to 900 °C and glycerol feed concentrations between 25 wt.% and 50 wt.%, needed to reach an energy self-sufficient process, are studied. For methanation, three adiabatic, fixed-bed reactors are connected in series with intermediate gas cooling, operating at 30 bars. The exit temperatures of these reactors range from 600 °C to 300 °C, respectively. The feed for the methanation section is previously conditioned by a Pressure Swing Adsorption unit to achieve a stoichiometric number of 3. The recommended operating conditions are a reforming temperature of 800 °C and a glycerol concentration of 33 wt.% to obtain 0.166 kg CH4/kg glycerol, 0.433 kWe/kg glycerol and an overall energy efficiency of 61.6%, which may increase up to 76.1% if the hot water leaving the process at 90 °C is considered (cogeneration water). The results of this process were compared to those of the methanol synthesis, previously published, resulting in a better performance, because the carbon proportion converted into methane is higher than into methanol from SCW reforming of glycerol, and the higher specific overall value for the methane production, which considers the price of the product and the electricity jointly.
publishDate 2014
dc.date.none.fl_str_mv 2014
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/acceptedVersion
format article
status_str acceptedVersion
dc.identifier.none.fl_str_mv https://hdl.handle.net/11441/172244
https://doi.org/10.1016/j.energy.2014.08.056
url https://hdl.handle.net/11441/172244
https://doi.org/10.1016/j.energy.2014.08.056
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Energy, 76, 584-592.
ENE2009-13755
https://www.sciencedirect.com/science/article/pii/S036054421400992X
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:idUS. Depósito de Investigación de la Universidad de Sevilla
instname:Universidad de Sevilla (US)
instname_str Universidad de Sevilla (US)
reponame_str idUS. Depósito de Investigación de la Universidad de Sevilla
collection idUS. Depósito de Investigación de la Universidad de Sevilla
repository.name.fl_str_mv
repository.mail.fl_str_mv
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