Effect of gas composition in Chemical-Looping Combustion with copper-based oxygen carriers: Fate of sulphur

8 pages, 6 figures, 5 tables.

Bibliographic Details
Authors: Forero, C. R., Gayán Sanz, Pilar, García Labiano, Francisco, Diego Poza, Luis F. de, Abad Secades, Alberto, Adánez Elorza, Juan
Format: article
Publication Date:2010
Country:España
Institution:Consejo Superior de Investigaciones Científicas (CSIC)
Repository:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/78510
Online Access:http://hdl.handle.net/10261/78510
Access Level:Open access
Keyword:CO2 capture
Chemical looping combustion
Copper
Sulphur
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oai_identifier_str oai:digital.csic.es:10261/78510
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repository_id_str
spelling Effect of gas composition in Chemical-Looping Combustion with copper-based oxygen carriers: Fate of sulphurForero, C. R.Gayán Sanz, PilarGarcía Labiano, FranciscoDiego Poza, Luis F. deAbad Secades, AlbertoAdánez Elorza, JuanCO2 captureChemical looping combustionCopperSulphur8 pages, 6 figures, 5 tables.Chemical-Looping Combustion (CLC) is an emerging technology for CO2 capture because separation of this gas from the other flue gas components is inherent to the process and thus no energy is expended for the separation. Natural or refinery gas can be used as gaseous fuels and they may contain different amounts of sulphur compounds, such as H2S and COS. This paper presents the combustion results obtained with a Cu-based oxygen carrier using mixtures of CH4 and H2S as fuel. The influence of H2S concentration on the gas product distribution and combustion efficiency, sulphur splitting between the fuel reactor (FR) and the air reactor (AR), oxygen carrier deactivation and material agglomeration was investigated in a continuous CLC plant (500Wth). The oxygen carrier to fuel ratio, φ, was the main operating parameter affecting the CLC system. Complete fuel combustion were reached at 1073 K working at φ values ≥1.5. The presence of H2S did not produce a decrease in the combustion efficiency even when working with a fuel containing 1300vppm H2S. At these conditions, the great majority of the sulphur fed into the system was released in the gas outlet of the FR as SO2, affecting to the quality of the CO2 produced. Formation of copper sulphide, Cu2S, and the subsequent reactivity loss was only detected working at low values of φ≤1.5, although this fact did not produce any agglomeration problem in the fluidized beds. In addition, the oxygen carrier was fully regenerated in a H2S-free environment. It can be concluded that Cu-based oxygen carriers are adequate materials to be used in a CLC process using fuels containing H2S although quality of the CO2 produced is affected. © 2010 Elsevier Ltd.This research was conducted with financial support from the Spanish Ministry of Science and Innovation (MICINN, Project CTQ2007-64400). C. R. Forero thanks UNIZAR-BSCH for the predoctoral fellowship. ReferencesPeer ReviewedElsevier2013201320102013info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/78510reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.ijggc.2010.04.002info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/785102026-05-22T06:33:51Z
dc.title.none.fl_str_mv Effect of gas composition in Chemical-Looping Combustion with copper-based oxygen carriers: Fate of sulphur
title Effect of gas composition in Chemical-Looping Combustion with copper-based oxygen carriers: Fate of sulphur
spellingShingle Effect of gas composition in Chemical-Looping Combustion with copper-based oxygen carriers: Fate of sulphur
Forero, C. R.
CO2 capture
Chemical looping combustion
Copper
Sulphur
title_short Effect of gas composition in Chemical-Looping Combustion with copper-based oxygen carriers: Fate of sulphur
title_full Effect of gas composition in Chemical-Looping Combustion with copper-based oxygen carriers: Fate of sulphur
title_fullStr Effect of gas composition in Chemical-Looping Combustion with copper-based oxygen carriers: Fate of sulphur
title_full_unstemmed Effect of gas composition in Chemical-Looping Combustion with copper-based oxygen carriers: Fate of sulphur
title_sort Effect of gas composition in Chemical-Looping Combustion with copper-based oxygen carriers: Fate of sulphur
dc.creator.none.fl_str_mv Forero, C. R.
Gayán Sanz, Pilar
García Labiano, Francisco
Diego Poza, Luis F. de
Abad Secades, Alberto
Adánez Elorza, Juan
author Forero, C. R.
author_facet Forero, C. R.
Gayán Sanz, Pilar
García Labiano, Francisco
Diego Poza, Luis F. de
Abad Secades, Alberto
Adánez Elorza, Juan
author_role author
author2 Gayán Sanz, Pilar
García Labiano, Francisco
Diego Poza, Luis F. de
Abad Secades, Alberto
Adánez Elorza, Juan
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv CO2 capture
Chemical looping combustion
Copper
Sulphur
topic CO2 capture
Chemical looping combustion
Copper
Sulphur
description 8 pages, 6 figures, 5 tables.
publishDate 2010
dc.date.none.fl_str_mv 2010
2013
2013
2013
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/78510
url http://hdl.handle.net/10261/78510
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv http://dx.doi.org/10.1016/j.ijggc.2010.04.002
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869408225428766720
score 15,81155

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