Biomass: technical and environmental alternative in the thermoelectric generation process

Este artículo presenta los resultados del análisis técnico (basado en la cantidad de exergía) y ambiental de una planta termoeléctrica de 50 MWe nominales, localizada al sur del estado de Santa Catarina (Brasil), diseñada para operar con carbón pulverizado y adaptada para operar en proceso co-firing...

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Autores:
Restrepo Victoria, Alvaro Hernán
Bazzo, Edson
Tipo de recurso:
Article of journal
Fecha de publicación:
2015
Institución:
Universidad Autónoma de Occidente
Repositorio:
RED: Repositorio Educativo Digital UAO
Idioma:
spa
OAI Identifier:
oai:red.uao.edu.co:10614/11871
Acceso en línea:
http://red.uao.edu.co//handle/10614/11871
Palabra clave:
Biomasa
Planta termoeléctrica
Exergía
Análisis Ciclo de Vida (ACV)
Proceso co-firing
Gases Efecto Invernadero (GEI)
Biomass
Power plants
Exergy
Co-firing process
Life Cycle Assessment (LCA)
Greenhouse Gases (GHG)
Rights
openAccess
License
Derechos Reservados - Universidad Autónoma de Occidente
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dc.title.eng.fl_str_mv Biomass: technical and environmental alternative in the thermoelectric generation process
title Biomass: technical and environmental alternative in the thermoelectric generation process
spellingShingle Biomass: technical and environmental alternative in the thermoelectric generation process
Biomasa
Planta termoeléctrica
Exergía
Análisis Ciclo de Vida (ACV)
Proceso co-firing
Gases Efecto Invernadero (GEI)
Biomass
Power plants
Exergy
Co-firing process
Life Cycle Assessment (LCA)
Greenhouse Gases (GHG)
title_short Biomass: technical and environmental alternative in the thermoelectric generation process
title_full Biomass: technical and environmental alternative in the thermoelectric generation process
title_fullStr Biomass: technical and environmental alternative in the thermoelectric generation process
title_full_unstemmed Biomass: technical and environmental alternative in the thermoelectric generation process
title_sort Biomass: technical and environmental alternative in the thermoelectric generation process
dc.creator.fl_str_mv Restrepo Victoria, Alvaro Hernán
Bazzo, Edson
dc.contributor.author.none.fl_str_mv Restrepo Victoria, Alvaro Hernán
Bazzo, Edson
dc.subject.proposal.spa.fl_str_mv Biomasa
Planta termoeléctrica
Exergía
Análisis Ciclo de Vida (ACV)
Proceso co-firing
Gases Efecto Invernadero (GEI)
topic Biomasa
Planta termoeléctrica
Exergía
Análisis Ciclo de Vida (ACV)
Proceso co-firing
Gases Efecto Invernadero (GEI)
Biomass
Power plants
Exergy
Co-firing process
Life Cycle Assessment (LCA)
Greenhouse Gases (GHG)
dc.subject.proposal.eng.fl_str_mv Biomass
Power plants
Exergy
Co-firing process
Life Cycle Assessment (LCA)
Greenhouse Gases (GHG)
description Este artículo presenta los resultados del análisis técnico (basado en la cantidad de exergía) y ambiental de una planta termoeléctrica de 50 MWe nominales, localizada al sur del estado de Santa Catarina (Brasil), diseñada para operar con carbón pulverizado y adaptada para operar en proceso co-firing carbón-biomasa residual. Además de la planta termoeléctrica, el estudio consideró una frontera extendida que involucró los procesos relacionados con la obtención, transporte y manipulación tanto del carbón como de la biomasa. El análisis exergético siguió lineamentos de la segunda ley de la termodinámica, mientras que el análisis ambiental se realizó siguiendo la metodología de análisis de ciclo de vida (ACV), considerando 1 MWh como unidad funcional y la categoría de impacto en el calentamiento global, mediante el método IPCC 2007 GWP 100 años. Para ambos casos (operación solo con carbón y en co-firing), el análisis exergético indicó que la planta termoeléctrica responde por más del 95 % del total de la exergía consumida. Para el análisis ambiental, los resultados indicaron que para la operación solo con carbón se emiten 1230 kg de CO2-eq por MWh, mientras que para la operación en co-firing, con una participación de hasta 10 % de biomasa en base energética, el valor efectivo de la emisión fue de 1103 kg de CO2-eq por MWh.
publishDate 2015
dc.date.issued.none.fl_str_mv 2015-01
dc.date.accessioned.none.fl_str_mv 2020-02-12T18:53:17Z
dc.date.available.none.fl_str_mv 2020-02-12T18:53:17Z
dc.type.spa.fl_str_mv Artículo de revista
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dc.relation.spa.fl_str_mv Ingeniería y Universidad. Volumen 19, número 1, (enero-junio, 2015); páginas 67-86
dc.relation.citationendpage.none.fl_str_mv 86
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dc.relation.citationstartpage.none.fl_str_mv 67
dc.relation.citationvolume.none.fl_str_mv 19
dc.relation.cites.spa.fl_str_mv Restrepo Victoria, A.H., Bazzo, E.(2015). Biomass: technical and environmental alternative in the thermoelectric generation process. Ingeniería y Universidad. 19(1), 67-86. http://red.uao.edu.co//handle/10614/11871
dc.relation.ispartofjournal.spa.fl_str_mv Ingeniería y Universidad
dc.relation.references.none.fl_str_mv International Energy Agency, Key world energy statistics. Paris: IEA, 2013. Electric Power Research Institute, Biomass Co-firing guidelines. Palo Alto California: EPRI, 1997.
J. Hansson et al., “Co-firing biomass with coal for electricity generation. An assessment of the potential in EU27”, Energy Policy, vol. 37, pp. 1444-1455, 2009.
D. A. Tillman, “Biomass co-firing: The technology, the experience, the combustion consequences”, Biomass Bioenergy, vol. 19, pp. 365-384, 2000.
M. Hondo, “Life cycle GHG emission analysis of power generation systems: Japanese case”, Energy, vol. 30, pp. 2042-2056, 2005.
A. Odeah, T. Naser, and T. Cockerill, “Life cycle analysis of UK coal fired power plants”, Energy Conversion Management, vol. 49, pp. 212-220, 2008.
P. Spath, M. Mann, and D. Kerr, Life cycle assessment of coal-fired power production. Golden, Colorado: National Renewable Energy Laboratory, 1999.
F. Pereira, E. Bazzo, and A. Martins de Oliveira, “Biomass co-firing as an alternative technology for a clean coal electric generation in Brazil”, en 20th International Congress of Mechanical Engineering, Gramados, RS, Brazil, 2009.
R. Miyake, E. Bazzo, and M. Bzuneck, “Cofiring of rice straw and coal in a coal-fired utility boiler: thermodynamic analysis”, en 13th Brazilian Congress Thermal Sciences Engineering, Uberlandia, MG, Brazil, 2010.
G. Moreno-Contreras, J. Serrano-Rico y J. Palacios-Restrepo, “Desempeño de la combustión de desechos industriales en un reactor de lecho fluidizado burbujeante”, Ingeniería Universidad, vol. 13, no. 2, pp. 251-266, 2009.
F. Sebastián, J. Royo, and M. Gómez, “Cofiring versus biomass-fired power plants: GHG (greenhouse gases) emissions savings comparison by means of LCA (life cycle assessment) methodology”. Energy, vol. 36, pp. 2029-2037, 2011.
H. Ming-Che, H. An-Lei, and W. Tzai-Hung, “GIS-based biomass resource utilization for rice straw cofiring in the Taiwanese power market”, Energy, vol. 55, pp. 354-360, 2013.
S. Shafie, T. Mahlia, and H. Masjuki, “Life cycle assessment of rice straw co-firing with coal power generation in Malaysia”, Energy, vol. 57, pp. 284-294, 2013.
W. Schakel et al., “Comparative life cycle assessment of biomass co-firing plants with carbón capture and storage”, Applied Energy, vol. 13, pp. 441-467, 2014.
ISO, FDIS 14040, Environmental management. Life cycle assessment. Principles and framework. Ginebra: ISO, 2006.
ISO, FDIS 14044, Environmental management. Life cycle assessment. Requirements and guidelines Managements environmental. Analyse du cycle de vie. Ginebra: ISO, 2006.
T. Süffert, Carvão nos Estados do Rio Grande do Sul e Santa Catarina, Porto Alegre. Informe de Recursos Minerais. Série Oportunidades Minerais CPRM, 1997.
M. Yore, M. Summers, and B. Jenkins, “Development of a stubble cutting system for a combine harvester”, ASAE Paper Number: 01-1087. ASAE Annual International Meeting. Sacramento, CA, 2001.
IFK, “Report of rice straw and Brazilian coal analyses”, Institutfür Feuerungs -und Kraftwerkstechnik - Universität Stuttgart. Stuttgart, 2009. [en alemán].
J. Szargut, D. Morris, and F. Steward, Exergy analysis of thermal, chemical and metallurgical processes. New York: Hemisphere, 1988.
A. Bejan, G. Tsatsaronis, and M. Moran, Thermal design and optimization. Hoboken, NJ: John Wiley & Sons, 1996.
A. Restrepo, “Metodologia de análise e avaliação exergoambiental de plantas termoelétricas operando em combustão combinada carvão”, Tesis, Universidade Federal de Santa Catarina, Florianópolis, Brasil, 2012.
E. Hughes and EPRI, Biomass Cofiring: field test results. Palo Alto, CA: Electric Power Research Institute, 1999.
K. Heidi, H. Leif, and S. Anders, Update on impact categories, normalisation and weighting in LCA. Danish: Ministry of the Environment, Environmental Project Nr. 995, 2005
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institution Universidad Autónoma de Occidente
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spelling Restrepo Victoria, Alvaro Hernán8c9e3cd77d4f7e12ade6fa8e6da27860Bazzo, Edsonc4dabcbd0627929e73e0b1db0aa2f17aUniversidad Autónoma de Occidente. Calle 25 115-85. Km 2 vía Cali-Jamundí2020-02-12T18:53:17Z2020-02-12T18:53:17Z2015-0101232126http://red.uao.edu.co//handle/10614/11871Este artículo presenta los resultados del análisis técnico (basado en la cantidad de exergía) y ambiental de una planta termoeléctrica de 50 MWe nominales, localizada al sur del estado de Santa Catarina (Brasil), diseñada para operar con carbón pulverizado y adaptada para operar en proceso co-firing carbón-biomasa residual. Además de la planta termoeléctrica, el estudio consideró una frontera extendida que involucró los procesos relacionados con la obtención, transporte y manipulación tanto del carbón como de la biomasa. El análisis exergético siguió lineamentos de la segunda ley de la termodinámica, mientras que el análisis ambiental se realizó siguiendo la metodología de análisis de ciclo de vida (ACV), considerando 1 MWh como unidad funcional y la categoría de impacto en el calentamiento global, mediante el método IPCC 2007 GWP 100 años. Para ambos casos (operación solo con carbón y en co-firing), el análisis exergético indicó que la planta termoeléctrica responde por más del 95 % del total de la exergía consumida. Para el análisis ambiental, los resultados indicaron que para la operación solo con carbón se emiten 1230 kg de CO2-eq por MWh, mientras que para la operación en co-firing, con una participación de hasta 10 % de biomasa en base energética, el valor efectivo de la emisión fue de 1103 kg de CO2-eq por MWh.This paper presents a technical (base on exergy) and environmental analysis concerning an existing 50 MWe steam power plant located in the south of Santa Catarina state - Brazil, designed to operate with pulverized coal and modified to operate in co-firing process coal -biomass. In addition to the power plant, the study considered an extended boundary that involves the processes related to the obtaining, transport and handling both coal and biomass. The exergy analysis was focused in the second law of thermodynamics, while the environmental analysis followed the Life Cycle Assessment (LCA) methodology took into account as functional unit 1 MWh and the global warming impact category, following the IPCC GWP index over 100 years. For both cases (only coal and co-firing), the exergetic analysis indicated that the power plant is responsible for over 95% of the exergy consumption. Results indicated that for the case of operating only with coal, are emitted 1230 kg of CO2-eq per MWh, whereas for operation in co-firing, with a share of 10% of biomass on energy basis, the value of the issue it is 1103 kg CO2-eq per MWhapplication/pdfspaUniversidad JaverianaIngeniería y Universidad. Volumen 19, número 1, (enero-junio, 2015); páginas 67-868616719Restrepo Victoria, A.H., Bazzo, E.(2015). Biomass: technical and environmental alternative in the thermoelectric generation process. Ingeniería y Universidad. 19(1), 67-86. http://red.uao.edu.co//handle/10614/11871Ingeniería y UniversidadInternational Energy Agency, Key world energy statistics. Paris: IEA, 2013. Electric Power Research Institute, Biomass Co-firing guidelines. Palo Alto California: EPRI, 1997.J. Hansson et al., “Co-firing biomass with coal for electricity generation. An assessment of the potential in EU27”, Energy Policy, vol. 37, pp. 1444-1455, 2009.D. A. Tillman, “Biomass co-firing: The technology, the experience, the combustion consequences”, Biomass Bioenergy, vol. 19, pp. 365-384, 2000.M. Hondo, “Life cycle GHG emission analysis of power generation systems: Japanese case”, Energy, vol. 30, pp. 2042-2056, 2005.A. Odeah, T. Naser, and T. Cockerill, “Life cycle analysis of UK coal fired power plants”, Energy Conversion Management, vol. 49, pp. 212-220, 2008.P. Spath, M. Mann, and D. Kerr, Life cycle assessment of coal-fired power production. Golden, Colorado: National Renewable Energy Laboratory, 1999.F. Pereira, E. Bazzo, and A. Martins de Oliveira, “Biomass co-firing as an alternative technology for a clean coal electric generation in Brazil”, en 20th International Congress of Mechanical Engineering, Gramados, RS, Brazil, 2009.R. Miyake, E. Bazzo, and M. Bzuneck, “Cofiring of rice straw and coal in a coal-fired utility boiler: thermodynamic analysis”, en 13th Brazilian Congress Thermal Sciences Engineering, Uberlandia, MG, Brazil, 2010.G. Moreno-Contreras, J. Serrano-Rico y J. Palacios-Restrepo, “Desempeño de la combustión de desechos industriales en un reactor de lecho fluidizado burbujeante”, Ingeniería Universidad, vol. 13, no. 2, pp. 251-266, 2009.F. Sebastián, J. Royo, and M. Gómez, “Cofiring versus biomass-fired power plants: GHG (greenhouse gases) emissions savings comparison by means of LCA (life cycle assessment) methodology”. Energy, vol. 36, pp. 2029-2037, 2011.H. Ming-Che, H. An-Lei, and W. Tzai-Hung, “GIS-based biomass resource utilization for rice straw cofiring in the Taiwanese power market”, Energy, vol. 55, pp. 354-360, 2013.S. Shafie, T. Mahlia, and H. Masjuki, “Life cycle assessment of rice straw co-firing with coal power generation in Malaysia”, Energy, vol. 57, pp. 284-294, 2013.W. Schakel et al., “Comparative life cycle assessment of biomass co-firing plants with carbón capture and storage”, Applied Energy, vol. 13, pp. 441-467, 2014.ISO, FDIS 14040, Environmental management. Life cycle assessment. Principles and framework. Ginebra: ISO, 2006.ISO, FDIS 14044, Environmental management. Life cycle assessment. Requirements and guidelines Managements environmental. Analyse du cycle de vie. Ginebra: ISO, 2006.T. Süffert, Carvão nos Estados do Rio Grande do Sul e Santa Catarina, Porto Alegre. Informe de Recursos Minerais. Série Oportunidades Minerais CPRM, 1997.M. Yore, M. Summers, and B. Jenkins, “Development of a stubble cutting system for a combine harvester”, ASAE Paper Number: 01-1087. ASAE Annual International Meeting. Sacramento, CA, 2001.IFK, “Report of rice straw and Brazilian coal analyses”, Institutfür Feuerungs -und Kraftwerkstechnik - Universität Stuttgart. Stuttgart, 2009. [en alemán].J. Szargut, D. Morris, and F. Steward, Exergy analysis of thermal, chemical and metallurgical processes. New York: Hemisphere, 1988.A. Bejan, G. Tsatsaronis, and M. Moran, Thermal design and optimization. Hoboken, NJ: John Wiley & Sons, 1996.A. Restrepo, “Metodologia de análise e avaliação exergoambiental de plantas termoelétricas operando em combustão combinada carvão”, Tesis, Universidade Federal de Santa Catarina, Florianópolis, Brasil, 2012.E. Hughes and EPRI, Biomass Cofiring: field test results. Palo Alto, CA: Electric Power Research Institute, 1999.K. Heidi, H. Leif, and S. Anders, Update on impact categories, normalisation and weighting in LCA. Danish: Ministry of the Environment, Environmental Project Nr. 995, 2005Derechos Reservados - Universidad Autónoma de Occidentehttps://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessAtribución-NoComercial-SinDerivadas 4.0 Internacional (CC BY-NC-ND 4.0)http://purl.org/coar/access_right/c_abf2Biomass: technical and environmental alternative in the thermoelectric generation processArtículo de revistahttp://purl.org/coar/resource_type/c_6501http://purl.org/coar/resource_type/c_2df8fbb1Textinfo:eu-repo/semantics/articlehttp://purl.org/redcol/resource_type/ARTREFinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/version/c_970fb48d4fbd8a85BiomasaPlanta termoeléctricaExergíaAnálisis Ciclo de Vida (ACV)Proceso co-firingGases Efecto Invernadero (GEI)BiomassPower plantsExergyCo-firing processLife Cycle Assessment (LCA)Greenhouse Gases (GHG)PublicationTEXTA0248_Biomass: technical and environmental alternative in the thermoelectric generation process.pdf.txtA0248_Biomass: technical and environmental alternative in the thermoelectric generation process.pdf.txtExtracted texttext/plain41200https://dspace7-uao.metacatalogo.com/bitstreams/32c99a33-cbca-4327-af9c-52a73fba5e81/downloadbd8e054bc37f4e1cb0521bb00fcd9a56MD57THUMBNAILA0248_Biomass: technical and environmental alternative in the thermoelectric generation process.pdf.jpgA0248_Biomass: technical and environmental alternative in the thermoelectric generation process.pdf.jpgGenerated Thumbnailimage/jpeg11063https://dspace7-uao.metacatalogo.com/bitstreams/42f25dd7-df80-468a-b448-e11cd9b89798/downloada696228e278834bb8627cb718053c3a4MD58CC-LICENSElicense_rdflicense_rdfapplication/rdf+xml; charset=utf-8805https://dspace7-uao.metacatalogo.com/bitstreams/2eb5f514-f841-4ad5-950a-6c35c6218628/download4460e5956bc1d1639be9ae6146a50347MD52LICENSElicense.txtlicense.txttext/plain; charset=utf-81665https://dspace7-uao.metacatalogo.com/bitstreams/d0eadca1-4549-4ecf-b932-9a1ea93dd8a8/download20b5ba22b1117f71589c7318baa2c560MD53ORIGINALA0248_Biomass: technical and environmental alternative in the thermoelectric generation process.pdfA0248_Biomass: technical and environmental alternative in the thermoelectric generation process.pdfTexto archivo completo del artículo de revista, PDFapplication/pdf1761404https://dspace7-uao.metacatalogo.com/bitstreams/b0b29625-fa4b-46c2-9a3e-bf1ca87c14f0/download362c5bb21153db68c22cae6a0e343284MD5410614/11871oai:dspace7-uao.metacatalogo.com:10614/118712024-01-19 16:06:27.447https://creativecommons.org/licenses/by-nc-nd/4.0/Derechos Reservados - Universidad Autónoma de Occidenteopen.accesshttps://dspace7-uao.metacatalogo.comRepositorio UAOrepositorio@uao.edu.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