Densification mechanisms during solid biofuels production made of sawdust, coal and cocoa husks by pressing

Abstract. Solid biofuels have become a valuable alternative for cleaner energy generation. This work aimed to identify the feasibility of using mixtures between coal, sawdust and cocoa husks for manufacturing pellets and the effect of particle size on their mechanical properties. Moreover, advanced...

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Autores:
Forero Núñez, Carlos Andrés
Tipo de recurso:
Doctoral thesis
Fecha de publicación:
2014
Institución:
Universidad Nacional de Colombia
Repositorio:
Universidad Nacional de Colombia
Idioma:
spa
OAI Identifier:
oai:repositorio.unal.edu.co:unal/55057
Acceso en línea:
https://repositorio.unal.edu.co/handle/unal/55057
http://bdigital.unal.edu.co/50351/
Palabra clave:
62 Ingeniería y operaciones afines / Engineering
63 Agricultura y tecnologías relacionadas / Agriculture
66 Ingeniería química y Tecnologías relacionadas/ Chemical engineering
Biomass
Coal
Cocoa
Densification mechanisms
Pellets
Sawdust
Biomasa
Carbón
Cocoa
Mecanismos de densificación
Pellets
Aserrín
Rights
openAccess
License
Atribución-NoComercial 4.0 Internacional
id UNACIONAL2_8c9fc9a007be159ff44d7854fa2916b9
oai_identifier_str oai:repositorio.unal.edu.co:unal/55057
network_acronym_str UNACIONAL2
network_name_str Universidad Nacional de Colombia
repository_id_str
dc.title.spa.fl_str_mv Densification mechanisms during solid biofuels production made of sawdust, coal and cocoa husks by pressing
title Densification mechanisms during solid biofuels production made of sawdust, coal and cocoa husks by pressing
spellingShingle Densification mechanisms during solid biofuels production made of sawdust, coal and cocoa husks by pressing
62 Ingeniería y operaciones afines / Engineering
63 Agricultura y tecnologías relacionadas / Agriculture
66 Ingeniería química y Tecnologías relacionadas/ Chemical engineering
Biomass
Coal
Cocoa
Densification mechanisms
Pellets
Sawdust
Biomasa
Carbón
Cocoa
Mecanismos de densificación
Pellets
Aserrín
title_short Densification mechanisms during solid biofuels production made of sawdust, coal and cocoa husks by pressing
title_full Densification mechanisms during solid biofuels production made of sawdust, coal and cocoa husks by pressing
title_fullStr Densification mechanisms during solid biofuels production made of sawdust, coal and cocoa husks by pressing
title_full_unstemmed Densification mechanisms during solid biofuels production made of sawdust, coal and cocoa husks by pressing
title_sort Densification mechanisms during solid biofuels production made of sawdust, coal and cocoa husks by pressing
dc.creator.fl_str_mv Forero Núñez, Carlos Andrés
dc.contributor.advisor.spa.fl_str_mv Jochum, Joachim (Thesis advisor)
dc.contributor.author.spa.fl_str_mv Forero Núñez, Carlos Andrés
dc.contributor.spa.fl_str_mv Sierra Vargas, Fabio Emiro
dc.subject.ddc.spa.fl_str_mv 62 Ingeniería y operaciones afines / Engineering
63 Agricultura y tecnologías relacionadas / Agriculture
66 Ingeniería química y Tecnologías relacionadas/ Chemical engineering
topic 62 Ingeniería y operaciones afines / Engineering
63 Agricultura y tecnologías relacionadas / Agriculture
66 Ingeniería química y Tecnologías relacionadas/ Chemical engineering
Biomass
Coal
Cocoa
Densification mechanisms
Pellets
Sawdust
Biomasa
Carbón
Cocoa
Mecanismos de densificación
Pellets
Aserrín
dc.subject.proposal.spa.fl_str_mv Biomass
Coal
Cocoa
Densification mechanisms
Pellets
Sawdust
Biomasa
Carbón
Cocoa
Mecanismos de densificación
Pellets
Aserrín
description Abstract. Solid biofuels have become a valuable alternative for cleaner energy generation. This work aimed to identify the feasibility of using mixtures between coal, sawdust and cocoa husks for manufacturing pellets and the effect of particle size on their mechanical properties. Moreover, advanced characterization techniques such as Light and Fluorescence microscopy were used for identifying changes on the densification mechanisms due to the variation of raw materials. Cocoa husks exhibited a similar performance as sawdust for binding coal particles; compression ratio and final density of pellets made with sawdust-coal were near to values obtained with cocoa-coal pellets. Optical and fluorescence microscopy showed that coal particles crushed during the process as a result of the fragmentation stage included in the densification mechanisms; the images also reveals the incidence of lignin and protein content in the agglomeration process. The coal particles were brittle; therefore, it was necessary to add either sawdust or cocoa to increase the resilience, strength and durability of the final solids. Identification of the mechanisms taking place during densification is of great importance in order to establish the optimal conditions for producing biomass or coal-biomass pellets. The production of biomass or biomass-coal pellets might create alternatives for developing new renewable energy industries in Colombia.
publishDate 2014
dc.date.issued.spa.fl_str_mv 2014
dc.date.accessioned.spa.fl_str_mv 2019-07-02T11:14:12Z
dc.date.available.spa.fl_str_mv 2019-07-02T11:14:12Z
dc.type.spa.fl_str_mv Trabajo de grado - Doctorado
dc.type.driver.spa.fl_str_mv info:eu-repo/semantics/doctoralThesis
dc.type.version.spa.fl_str_mv info:eu-repo/semantics/acceptedVersion
dc.type.coar.spa.fl_str_mv http://purl.org/coar/resource_type/c_db06
dc.type.content.spa.fl_str_mv Text
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dc.identifier.uri.none.fl_str_mv https://repositorio.unal.edu.co/handle/unal/55057
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url https://repositorio.unal.edu.co/handle/unal/55057
http://bdigital.unal.edu.co/50351/
dc.language.iso.spa.fl_str_mv spa
language spa
dc.relation.ispartof.spa.fl_str_mv Universidad Nacional de Colombia Sede Bogotá Facultad de Ingeniería Departamento de Ingeniería Mecánica y Mecatrónica Ingeniería Mecánica Universidad Nacional de Colombia Sede Medellín Facultad de Minas Escuela de Mecatrónica Ingeniería Mecánica
Ingeniería Mecánica
dc.relation.references.spa.fl_str_mv Forero Núñez, Carlos Andrés (2014) Densification mechanisms during solid biofuels production made of sawdust, coal and cocoa husks by pressing. Doctorado thesis, Universidad Nacional de Colombia.
dc.rights.spa.fl_str_mv Derechos reservados - Universidad Nacional de Colombia
dc.rights.coar.fl_str_mv http://purl.org/coar/access_right/c_abf2
dc.rights.license.spa.fl_str_mv Atribución-NoComercial 4.0 Internacional
dc.rights.uri.spa.fl_str_mv http://creativecommons.org/licenses/by-nc/4.0/
dc.rights.accessrights.spa.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv Atribución-NoComercial 4.0 Internacional
Derechos reservados - Universidad Nacional de Colombia
http://creativecommons.org/licenses/by-nc/4.0/
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.mimetype.spa.fl_str_mv application/pdf
institution Universidad Nacional de Colombia
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spelling Atribución-NoComercial 4.0 InternacionalDerechos reservados - Universidad Nacional de Colombiahttp://creativecommons.org/licenses/by-nc/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Sierra Vargas, Fabio EmiroJochum, Joachim (Thesis advisor)e4c6f9ac-c91a-4a1a-a7de-35bde14ae673-1Forero Núñez, Carlos Andrésd84b5cd8-bb9a-4481-9205-0ff6c9a68b883002019-07-02T11:14:12Z2019-07-02T11:14:12Z2014https://repositorio.unal.edu.co/handle/unal/55057http://bdigital.unal.edu.co/50351/Abstract. Solid biofuels have become a valuable alternative for cleaner energy generation. This work aimed to identify the feasibility of using mixtures between coal, sawdust and cocoa husks for manufacturing pellets and the effect of particle size on their mechanical properties. Moreover, advanced characterization techniques such as Light and Fluorescence microscopy were used for identifying changes on the densification mechanisms due to the variation of raw materials. Cocoa husks exhibited a similar performance as sawdust for binding coal particles; compression ratio and final density of pellets made with sawdust-coal were near to values obtained with cocoa-coal pellets. Optical and fluorescence microscopy showed that coal particles crushed during the process as a result of the fragmentation stage included in the densification mechanisms; the images also reveals the incidence of lignin and protein content in the agglomeration process. The coal particles were brittle; therefore, it was necessary to add either sawdust or cocoa to increase the resilience, strength and durability of the final solids. Identification of the mechanisms taking place during densification is of great importance in order to establish the optimal conditions for producing biomass or coal-biomass pellets. The production of biomass or biomass-coal pellets might create alternatives for developing new renewable energy industries in Colombia.Biocombustibles sólidos se han convertido en una valiosa alternativa para la generación de energía limpia. Este trabajo tuvo como objetivo para identificar la viabilidad de utilizar mezclas entre el carbón, serrín y cáscaras de cacao para gránulos de fabricación y el efecto del tamaño de partícula en sus propiedades mecánicas. Por otra parte, Se utilizaron técnicas avanzadas de caracterización tales como luz y microscopía de fluorescencia para la identificación de cambios en los mecanismos de densificación debido a la variación de las materias primas. Cacao cáscaras mostraron un rendimiento similar como el aserrín para la unión de las partículas de carbón; relación de compresión y densidad final de bolitas hechas con aserrín-carbón estaban cerca a los valores obtenidos con el cacao-carbón pellets. Microscopía óptica y fluorescencia mostró que las partículas de carbón aplastados durante el proceso como resultado de la etapa de fragmentación incluido en los mecanismos de densificación; las imágenes también revela la incidencia de contenido de lignina y proteína en el proceso de aglomeración. Las partículas de carbón eran frágiles; Por lo tanto, era necesario añadir ya sea serrín o cacao para aumentar la resiliencia, resistencia y durabilidad de los sólidos finales. Identificación de los mecanismos que tienen lugar durante densificación es de gran importancia con el fin de establecer las condiciones óptimas para la producción de de biomasa o carbón-biomasa pellets. La producción de biomasa o biomasa-carbón bolitas podría crear alternativas para el desarrollo de nuevas industrias de energía renovable en Colombia.Doctoradoapplication/pdfspaUniversidad Nacional de Colombia Sede Bogotá Facultad de Ingeniería Departamento de Ingeniería Mecánica y Mecatrónica Ingeniería Mecánica Universidad Nacional de Colombia Sede Medellín Facultad de Minas Escuela de Mecatrónica Ingeniería MecánicaIngeniería MecánicaForero Núñez, Carlos Andrés (2014) Densification mechanisms during solid biofuels production made of sawdust, coal and cocoa husks by pressing. Doctorado thesis, Universidad Nacional de Colombia.62 Ingeniería y operaciones afines / Engineering63 Agricultura y tecnologías relacionadas / Agriculture66 Ingeniería química y Tecnologías relacionadas/ Chemical engineeringBiomassCoalCocoaDensification mechanismsPelletsSawdustBiomasaCarbónCocoaMecanismos de densificaciónPelletsAserrínDensification mechanisms during solid biofuels production made of sawdust, coal and cocoa husks by pressingTrabajo de grado - Doctoradoinfo:eu-repo/semantics/doctoralThesisinfo:eu-repo/semantics/acceptedVersionhttp://purl.org/coar/resource_type/c_db06Texthttp://purl.org/redcol/resource_type/TDORIGINAL1015993598.2014.pdfapplication/pdf5046183https://repositorio.unal.edu.co/bitstream/unal/55057/1/1015993598.2014.pdfa480f2119868b221b02ebebbc66add0dMD51THUMBNAIL1015993598.2014.pdf.jpg1015993598.2014.pdf.jpgGenerated Thumbnailimage/jpeg4986https://repositorio.unal.edu.co/bitstream/unal/55057/2/1015993598.2014.pdf.jpgd450627953700826574a9b617c542f55MD52unal/55057oai:repositorio.unal.edu.co:unal/550572024-03-16 23:07:32.628Repositorio Institucional Universidad Nacional de Colombiarepositorio_nal@unal.edu.co

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