Optimum temperature for sulphur retention in fluidised beds working under oxy-fuel combustion conditions

7 pages, 9 figures, 4 tables

Detalles Bibliográficos
Autores: Diego Poza, Luis F. de, Rufas, Aránzazu, García Labiano, Francisco, Obras-Loscertales, Margarita de las, Abad Secades, Alberto, Gayán Sanz, Pilar, Adánez Elorza, Juan
Tipo de recurso: artículo
Fecha de publicación:2012
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/84947
Acceso en línea:http://hdl.handle.net/10261/84947
Access Level:acceso abierto
Palabra clave:Oxy-fuel combustion
SO2 retention
Limestone
Fluidized bed
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spelling Optimum temperature for sulphur retention in fluidised beds working under oxy-fuel combustion conditionsDiego Poza, Luis F. deRufas, AránzazuGarcía Labiano, FranciscoObras-Loscertales, Margarita de lasAbad Secades, AlbertoGayán Sanz, PilarAdánez Elorza, JuanOxy-fuel combustionSO2 retentionLimestoneFluidized bed7 pages, 9 figures, 4 tablesOxy-fuel combustion is one of the leading options for power generation with CO2 capture. The process consists of burning the fuel with a mixture of nearly pure oxygen and a CO2-rich recycled flue gas, resulting in a product flue gas from the boiler containing mainly CO2 and H2O. Among the possible boiler types, fluidised bed combustors are very appropriate for the oxy-fuel process because they allow the in situ des- ulphurisation by feeding Ca-based sorbents into the combustor. In this work, the effect of the temperature of the combustor on the retention of the SO2 generated in the combustion of two coals with very different sulphur content (a lignite and an anthracite) has been stud- ied. The experimental facility used was a bubbling fluidised bed (BFB) combustor of 3kWth. Tests were conducted under oxy-fuel combustion mode and also under enriched-air combustion mode for compar-ison reasons. A Spanish limestone ‘‘Granicarb’’ was used as Ca-based sorbent for sulphur retention. The temperatures tested were between 800 and 970 C using Ca/S molar ratios between 0 and 3. It was found that in BFB combustors operating under oxy-fuel combustion conditions the optimum temperature to achieve the highest sulphur retention was 900–925 C, whereas operating with enriched air the optimum combustion temperature was 850–870 C. Working at the optimum temperature, the SO2 retentions were lower in oxy-fuel combustion than in enriched air combustion conditions. It was also observed that working with lignite there was 10–15% of sulphur retention by coal ashes, however, working with anthracite the sulphur retention by coal ashes was negligible. This finding was independent of the combustion mode used, oxy-fuel or enriched air.This work has been supported by Spanish Ministry of Science and Innovation (MICINN, Project: CTQ2008-05399/PPQ) and by FEDER. A. Rufas thanks CSIC for the JAE fellowship and M. de las Obras thanks MICINN for the FPI fellowship.Peer reviewedElsevier201320132012info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/84947reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshttp://dx.doi.org/10.1016/j.fuel.2012.02.064info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/849472026-05-22T06:33:51Z
dc.title.none.fl_str_mv Optimum temperature for sulphur retention in fluidised beds working under oxy-fuel combustion conditions
title Optimum temperature for sulphur retention in fluidised beds working under oxy-fuel combustion conditions
spellingShingle Optimum temperature for sulphur retention in fluidised beds working under oxy-fuel combustion conditions
Diego Poza, Luis F. de
Oxy-fuel combustion
SO2 retention
Limestone
Fluidized bed
title_short Optimum temperature for sulphur retention in fluidised beds working under oxy-fuel combustion conditions
title_full Optimum temperature for sulphur retention in fluidised beds working under oxy-fuel combustion conditions
title_fullStr Optimum temperature for sulphur retention in fluidised beds working under oxy-fuel combustion conditions
title_full_unstemmed Optimum temperature for sulphur retention in fluidised beds working under oxy-fuel combustion conditions
title_sort Optimum temperature for sulphur retention in fluidised beds working under oxy-fuel combustion conditions
dc.creator.none.fl_str_mv Diego Poza, Luis F. de
Rufas, Aránzazu
García Labiano, Francisco
Obras-Loscertales, Margarita de las
Abad Secades, Alberto
Gayán Sanz, Pilar
Adánez Elorza, Juan
author Diego Poza, Luis F. de
author_facet Diego Poza, Luis F. de
Rufas, Aránzazu
García Labiano, Francisco
Obras-Loscertales, Margarita de las
Abad Secades, Alberto
Gayán Sanz, Pilar
Adánez Elorza, Juan
author_role author
author2 Rufas, Aránzazu
García Labiano, Francisco
Obras-Loscertales, Margarita de las
Abad Secades, Alberto
Gayán Sanz, Pilar
Adánez Elorza, Juan
author2_role author
author
author
author
author
author
dc.subject.none.fl_str_mv Oxy-fuel combustion
SO2 retention
Limestone
Fluidized bed
topic Oxy-fuel combustion
SO2 retention
Limestone
Fluidized bed
description 7 pages, 9 figures, 4 tables
publishDate 2012
dc.date.none.fl_str_mv 2012
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/10261/84947
url http://hdl.handle.net/10261/84947
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.fuel.2012.02.064
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_ 1869413084774268928
score 15,811543

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