Problem mapping of the generation and treatment of forest biomass ashes in boiler
Autor(a) principal: | |
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Data de Publicação: | 2021 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | por |
Título da fonte: | Ciência Florestal (Online) |
Texto Completo: | https://periodicos.ufsm.br/cienciaflorestal/article/view/35819 |
Resumo: | The nature of the problems associated with the biomass combustion in boilers and their impact on the performance of combustion equipment depends on the fuel’s characteristics, and the design and operation of the combustion equipment. Thus, the objective of this study was to map the problems associated with the generation and treatment of forest biomass ashes in an industrial boiler. The study was developed in a thermoelectric plant with a production of 28MW / hour originated from the combustion of residual forest biomass. Three biomass samples were collected before entering the boiler’s furnace and at four flowing points inside the boiler, where the treatment and recovery for the final disposal of the biomass ashes occur. To compare the collection points in the boiler and the biomass properties, part of the samples were calcined in the laboratory. The analysed properties were: inorganic elemental chemical composition; the ashes fusion test and the potentiality of occurrence of problems through the following indices: ash deposition (R); slag (Rs); inlay (Fu); viscosity (Sr) and alkali (Al). As for the elemental chemical composition, the compounds with the highest concentrations were silicon, aluminum, iron, calcium, potassium and magnesium oxides. The melting temperature of the ashes was between 1261 ° C and 1385 ° C at the collection points. The mapping of the problems indicated low risks of formation of slag and viscosity. The fouling index was high, from 0.69 for the decanter and 1.11 for the readler, the latter having a medium potential viscosity. The formation of alkali occurred in the readler and decanter, causing corrosion at these points. The calculations of the deposition rates, based on the elemental chemical composition of the ashes were able to express the problems that occur in the combustion of the forest biomass in the boiler. |
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Problem mapping of the generation and treatment of forest biomass ashes in boilerMapeamento dos problemas associados à geração e tratamento das cinzas na combustão da biomassa florestal em caldeiraElemental analysisFusion of the ashesIndices of the depositionAnálise elementarFusão das cinzasÍndices de deposiçãoThe nature of the problems associated with the biomass combustion in boilers and their impact on the performance of combustion equipment depends on the fuel’s characteristics, and the design and operation of the combustion equipment. Thus, the objective of this study was to map the problems associated with the generation and treatment of forest biomass ashes in an industrial boiler. The study was developed in a thermoelectric plant with a production of 28MW / hour originated from the combustion of residual forest biomass. Three biomass samples were collected before entering the boiler’s furnace and at four flowing points inside the boiler, where the treatment and recovery for the final disposal of the biomass ashes occur. To compare the collection points in the boiler and the biomass properties, part of the samples were calcined in the laboratory. The analysed properties were: inorganic elemental chemical composition; the ashes fusion test and the potentiality of occurrence of problems through the following indices: ash deposition (R); slag (Rs); inlay (Fu); viscosity (Sr) and alkali (Al). As for the elemental chemical composition, the compounds with the highest concentrations were silicon, aluminum, iron, calcium, potassium and magnesium oxides. The melting temperature of the ashes was between 1261 ° C and 1385 ° C at the collection points. The mapping of the problems indicated low risks of formation of slag and viscosity. The fouling index was high, from 0.69 for the decanter and 1.11 for the readler, the latter having a medium potential viscosity. The formation of alkali occurred in the readler and decanter, causing corrosion at these points. The calculations of the deposition rates, based on the elemental chemical composition of the ashes were able to express the problems that occur in the combustion of the forest biomass in the boiler.Os problemas relacionados à combustão da biomassa e o seu impacto sobre a eficiência das caldeiras dependem das características do combustível e do projeto e operação dos equipamentos. Assim, este estudo teve como objetivo mapear os problemas associados à geração, coleta e tratamento das cinzas da biomassa florestal queimada em caldeiras industriais. O estudo foi realizado em uma usina termelétrica que gera 28MW/hora e usa biomassa florestal como combustível. Foram feitas três coletas de cavacos de madeira, antes da entrada na fornalha da caldeira e em quatro locais de passagem de cinzas na caldeira, onde ocorre o tratamento e recolhimento para disposição final deste resíduo da biomassa. Parte do mix de biomassa foi calcinado em laboratório para comparação entre os pontos de amostragem com as propriedades da biomassa. As propriedades analisadas foram: composição química elementar inorgânica; teste de fusão das cinzas e a potencialidade de ocorrência de problemas por meio dos índices de: deposição das cinzas (R); escória (Rs); incrustação (Fu); viscosidade (Sr) e álcali (Al). Os compostos presentes em maior concentração nas cinzas foram os óxidos de silício, alumínio, ferro, cálcio, potássio e magnésio. A temperatura de fusão das cinzas foi entre 1261°C e 1385°C. O mapeamento dos problemas apontou baixos riscos de formação de escória e viscosidade. O índice de incrustação foi alto para o decantador (0,69) e o readler teve médio potencial de viscosidade (1,11). A formação de álcali ocorreu no readler e decantador, provocando corrosões nestes pontos. Os cálculos dos índices de deposição foram capazes de expressar os problemas que ocorrem na queima da biomassa florestal em caldeira.Universidade Federal de Santa Maria2021-09-06info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdftext/htmlhttps://periodicos.ufsm.br/cienciaflorestal/article/view/3581910.5902/1980509835819Ciência Florestal; Vol. 31 No. 3 (2021); 1167-1192Ciência Florestal; v. 31 n. 3 (2021); 1167-11921980-50980103-9954reponame:Ciência Florestal (Online)instname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMporhttps://periodicos.ufsm.br/cienciaflorestal/article/view/35819/pdfhttps://periodicos.ufsm.br/cienciaflorestal/article/view/35819/htmlCopyright (c) 2021 Ciência Florestalinfo:eu-repo/semantics/openAccessBrand, Martha AndreiaHenne, Reny AldoSchein, Viviane Aparecida SpinelliPereira, Ederson Rodrigues2021-09-06T21:13:38Zoai:ojs.pkp.sfu.ca:article/35819Revistahttp://www.ufsm.br/cienciaflorestal/ONGhttps://old.scielo.br/oai/scielo-oai.php||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br1980-50980103-9954opendoar:2021-09-06T21:13:38Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM)false |
dc.title.none.fl_str_mv |
Problem mapping of the generation and treatment of forest biomass ashes in boiler Mapeamento dos problemas associados à geração e tratamento das cinzas na combustão da biomassa florestal em caldeira |
title |
Problem mapping of the generation and treatment of forest biomass ashes in boiler |
spellingShingle |
Problem mapping of the generation and treatment of forest biomass ashes in boiler Brand, Martha Andreia Elemental analysis Fusion of the ashes Indices of the deposition Análise elementar Fusão das cinzas Índices de deposição |
title_short |
Problem mapping of the generation and treatment of forest biomass ashes in boiler |
title_full |
Problem mapping of the generation and treatment of forest biomass ashes in boiler |
title_fullStr |
Problem mapping of the generation and treatment of forest biomass ashes in boiler |
title_full_unstemmed |
Problem mapping of the generation and treatment of forest biomass ashes in boiler |
title_sort |
Problem mapping of the generation and treatment of forest biomass ashes in boiler |
author |
Brand, Martha Andreia |
author_facet |
Brand, Martha Andreia Henne, Reny Aldo Schein, Viviane Aparecida Spinelli Pereira, Ederson Rodrigues |
author_role |
author |
author2 |
Henne, Reny Aldo Schein, Viviane Aparecida Spinelli Pereira, Ederson Rodrigues |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Brand, Martha Andreia Henne, Reny Aldo Schein, Viviane Aparecida Spinelli Pereira, Ederson Rodrigues |
dc.subject.por.fl_str_mv |
Elemental analysis Fusion of the ashes Indices of the deposition Análise elementar Fusão das cinzas Índices de deposição |
topic |
Elemental analysis Fusion of the ashes Indices of the deposition Análise elementar Fusão das cinzas Índices de deposição |
description |
The nature of the problems associated with the biomass combustion in boilers and their impact on the performance of combustion equipment depends on the fuel’s characteristics, and the design and operation of the combustion equipment. Thus, the objective of this study was to map the problems associated with the generation and treatment of forest biomass ashes in an industrial boiler. The study was developed in a thermoelectric plant with a production of 28MW / hour originated from the combustion of residual forest biomass. Three biomass samples were collected before entering the boiler’s furnace and at four flowing points inside the boiler, where the treatment and recovery for the final disposal of the biomass ashes occur. To compare the collection points in the boiler and the biomass properties, part of the samples were calcined in the laboratory. The analysed properties were: inorganic elemental chemical composition; the ashes fusion test and the potentiality of occurrence of problems through the following indices: ash deposition (R); slag (Rs); inlay (Fu); viscosity (Sr) and alkali (Al). As for the elemental chemical composition, the compounds with the highest concentrations were silicon, aluminum, iron, calcium, potassium and magnesium oxides. The melting temperature of the ashes was between 1261 ° C and 1385 ° C at the collection points. The mapping of the problems indicated low risks of formation of slag and viscosity. The fouling index was high, from 0.69 for the decanter and 1.11 for the readler, the latter having a medium potential viscosity. The formation of alkali occurred in the readler and decanter, causing corrosion at these points. The calculations of the deposition rates, based on the elemental chemical composition of the ashes were able to express the problems that occur in the combustion of the forest biomass in the boiler. |
publishDate |
2021 |
dc.date.none.fl_str_mv |
2021-09-06 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
https://periodicos.ufsm.br/cienciaflorestal/article/view/35819 10.5902/1980509835819 |
url |
https://periodicos.ufsm.br/cienciaflorestal/article/view/35819 |
identifier_str_mv |
10.5902/1980509835819 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.relation.none.fl_str_mv |
https://periodicos.ufsm.br/cienciaflorestal/article/view/35819/pdf https://periodicos.ufsm.br/cienciaflorestal/article/view/35819/html |
dc.rights.driver.fl_str_mv |
Copyright (c) 2021 Ciência Florestal info:eu-repo/semantics/openAccess |
rights_invalid_str_mv |
Copyright (c) 2021 Ciência Florestal |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf text/html |
dc.publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
publisher.none.fl_str_mv |
Universidade Federal de Santa Maria |
dc.source.none.fl_str_mv |
Ciência Florestal; Vol. 31 No. 3 (2021); 1167-1192 Ciência Florestal; v. 31 n. 3 (2021); 1167-1192 1980-5098 0103-9954 reponame:Ciência Florestal (Online) instname:Universidade Federal de Santa Maria (UFSM) instacron:UFSM |
instname_str |
Universidade Federal de Santa Maria (UFSM) |
instacron_str |
UFSM |
institution |
UFSM |
reponame_str |
Ciência Florestal (Online) |
collection |
Ciência Florestal (Online) |
repository.name.fl_str_mv |
Ciência Florestal (Online) - Universidade Federal de Santa Maria (UFSM) |
repository.mail.fl_str_mv |
||cienciaflorestal@ufsm.br|| cienciaflorestal@gmail.com|| cf@smail.ufsm.br |
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1799944134629261312 |