Impacto da lavagem da polpa marrom no branqueamento, na evaporação e no meio ambiente
Autor(a) principal: | |
---|---|
Data de Publicação: | 2013 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | LOCUS Repositório Institucional da UFV |
Texto Completo: | http://locus.ufv.br/handle/123456789/5936 |
Resumo: | Worldwide pulp and paper industries have undergone changing due to changes in the industrial acceleration setting associated to rapid emergence of technologies. Industry challenges touch upon aspects from raw material quality and final product, environmental considerations, production costs control as well as modification and improvement of technologies used in the manufacturing process. Development and technologies improvement may represent an alternative to ensure the prosperity of pulp and paper industries. Accordingly the aim of this work was to implement operational improvements on Suzano Pulp and Paper washing filters (in Mucuri) to increase the brownstock washing efficiency and evaluate the impact on bleaching chemicals consumption, weak black liquor circuit and environment. Basically the actions implemented for washing process optimization were: Showers washing flow reduction of the thickeners filters showers where it worked with attached sheet detaching. The filter vat level control was set up to Auto mode; vacuum valve mechanic tune; insert approximately 111 m3/h clear condensate into filtrate circuit; reduced dilution factor of first washing press and washing filters filtrate tank level control around 40 50%. The material used on this study was eucalyptus pulp produced on Suzano Pulp and Paper Mucuri BA line 1. All analysis on different situations followed the real pulp mill productions and processes. Data regarding the primary raw material for obtaining cellulose, wood, were not evaluated, since it considers that the wood chemistry and physics composition are random parameters, therefore have no influence on the results of this study. For reference values (white), industrial date were collected thirty production days before and after operational changing in the washing system. Based on the results, it was observed that there was a significant improvement in washing filters operating performance, as evidenced by the results of increasing pre-O2 delignification degree (increased from 27.84 to 31.60%), reduction on washing xiii filters filtrate conductivity (reduction from 28.92 to 25.29 mS / cm), soda loss in alkaline delignification (reduction from 19.50 to 18.75 kg / tsa), increased brightness at the entrance of bleaching (increased from 45.61 to 49.33 ° ISO), reduction of active chlorine (reduction from 44.57 to 38.97 kg / tsa), hydrogen peroxide in bleaching (reduction from 8.34 to 7.82 kg / adt). |
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Mendes, André Fonsecahttp://lattes.cnpq.br/4964245338587602Colodette, Jorge Luizhttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4721443U9Jardim, Carolina Marangonhttp://lattes.cnpq.br/4049385760003391Gomide, José Líviohttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4781177P5Carvalho, Ana Márcia Macedo Ladeirahttp://lattes.cnpq.br/60173926589932882015-03-26T14:01:15Z2014-01-172015-03-26T14:01:15Z2013-07-15MENDES, André Fonseca. Impact of brown pulp washing in bleaching, and in evaporation and environment. 2013. 66 f. Dissertação (Mestrado em Qualidade da madeira; Tecnologia de celulose e papel) - Universidade Federal de Viçosa, Viçosa, 2013.http://locus.ufv.br/handle/123456789/5936Worldwide pulp and paper industries have undergone changing due to changes in the industrial acceleration setting associated to rapid emergence of technologies. Industry challenges touch upon aspects from raw material quality and final product, environmental considerations, production costs control as well as modification and improvement of technologies used in the manufacturing process. Development and technologies improvement may represent an alternative to ensure the prosperity of pulp and paper industries. Accordingly the aim of this work was to implement operational improvements on Suzano Pulp and Paper washing filters (in Mucuri) to increase the brownstock washing efficiency and evaluate the impact on bleaching chemicals consumption, weak black liquor circuit and environment. Basically the actions implemented for washing process optimization were: Showers washing flow reduction of the thickeners filters showers where it worked with attached sheet detaching. The filter vat level control was set up to Auto mode; vacuum valve mechanic tune; insert approximately 111 m3/h clear condensate into filtrate circuit; reduced dilution factor of first washing press and washing filters filtrate tank level control around 40 50%. The material used on this study was eucalyptus pulp produced on Suzano Pulp and Paper Mucuri BA line 1. All analysis on different situations followed the real pulp mill productions and processes. Data regarding the primary raw material for obtaining cellulose, wood, were not evaluated, since it considers that the wood chemistry and physics composition are random parameters, therefore have no influence on the results of this study. For reference values (white), industrial date were collected thirty production days before and after operational changing in the washing system. Based on the results, it was observed that there was a significant improvement in washing filters operating performance, as evidenced by the results of increasing pre-O2 delignification degree (increased from 27.84 to 31.60%), reduction on washing xiii filters filtrate conductivity (reduction from 28.92 to 25.29 mS / cm), soda loss in alkaline delignification (reduction from 19.50 to 18.75 kg / tsa), increased brightness at the entrance of bleaching (increased from 45.61 to 49.33 ° ISO), reduction of active chlorine (reduction from 44.57 to 38.97 kg / tsa), hydrogen peroxide in bleaching (reduction from 8.34 to 7.82 kg / adt).Mundialmente, a indústria de celulose e papel vem sofrendo transformações decorrentes de alterações no cenário de aceleração industrial aliadas à célere emergência de tecnologias. Os desafios do setor tangem desde aspectos de qualidade das matérias-primas e produto final, considerações ambientais, controle dos custos de produção, bem como alteração e aperfeiçoamento das tecnologias existentes e utilizadas no processo industrial. O desenvolvimento e o aprimoramento de tecnologias podem representar uma alternativa para garantir a prosperidade da indústria de celulose e papel. Nesse contexto, este trabalho visou implementar melhorias operacionais nos filtros lavadores da Suzano Papel e Celulose unidade Mucuri (BA) para aumentar a eficiência do processo de lavagem da polpa marrom e avaliar os impactos no consumo de químicos no branqueamento, circuito de licor negro fraco e meio ambiente. Basicamente, as ações implementadas para otimização do processo de lavagem foram: redução do fluxo de lavagem dos chuveiros dos filtros engrossadores trabalhou-se com os destacadores de manta ligados; o controle de nível das tinas dos filtros passou para o modo automático; ajuste mecânico nas válvulas de vácuo; inserção de aproximadamente 111 m 3/h de condensado limpo no circuito de filtrado; reduziu-se o fator de diluição da primeira prensa de lavagem e controlou-se o nível do tanque de filtrado dos filtros lavadores na faixa de 40 a 50%. O material utilizado neste estudo foi polpa celulósica de eucalipto produzida na linha 1 da Suzano Papel e Celulose unidade Mucuri - BA. Todas as condições analisadas foram condições de produção e processos reais da fábrica. Dados referentes à principal matéria-prima de obtenção de celulose, a madeira, não foram avaliados. Para valores de referência (o branco) foram coletados dados industriais de aproximadamente trinta dias de produção antes das modificações operacionais no sistema de lavagem e trinta dias após. Com base nos resultados, observou-se que houve uma melhora significativa na xi performance operacional dos filtros lavadores, fato evidenciado pelos resultados no aumento do grau de deslignificação na pré-O2 (elevação de 27,84 para 31,60%), redução na condutividade do filtrado nos filtros lavadores (de 28,92 para 25,29 μs/cm), redução da carga alcalina na deslignificação (de 19,50 para 18,75 Kg/tsa), elevação da alvura na entrada do branqueamento (de 45,61 para 49,33° ISO), redução no consumo de cloro ativo (de 44,57 para 38,97 Kg/tsa) e peróxido de hidrogênio no branqueamento (de 8,34 para 7,82 Kg/tsa).application/pdfporUniversidade Federal de ViçosaMestrado Profissionalizante em Tecnologia de Celulose e PapelUFVBRQualidade da madeira; Tecnologia de celulose e papelPolpa de celuloseLavagemBranqueamentoEvaporaçãoMeio ambientePaper pulpWashingBleachingEvaporationEnviromentCNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL::TECNOLOGIA E UTILIZACAO DE PRODUTOS FLORESTAIS::TECNOLOGIA DE CELULOSE E PAPELImpacto da lavagem da polpa marrom no branqueamento, na evaporação e no meio ambienteImpact of brown pulp washing in bleaching, and in evaporation and environmentinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisinfo:eu-repo/semantics/openAccessreponame:LOCUS Repositório Institucional da UFVinstname:Universidade Federal de Viçosa (UFV)instacron:UFVORIGINALtexto completo.pdfapplication/pdf2326972https://locus.ufv.br//bitstream/123456789/5936/1/texto%20completo.pdf761e5c605aeac56574fe8da85c10c883MD51TEXTtexto completo.pdf.txttexto completo.pdf.txtExtracted texttext/plain92784https://locus.ufv.br//bitstream/123456789/5936/2/texto%20completo.pdf.txt319fda0a3e918beb9032e018c680cb01MD52THUMBNAILtexto completo.pdf.jpgtexto completo.pdf.jpgIM Thumbnailimage/jpeg3659https://locus.ufv.br//bitstream/123456789/5936/3/texto%20completo.pdf.jpg8e63b598f344c60f5fce38ed08369d94MD53123456789/59362016-04-11 23:13:01.77oai:locus.ufv.br:123456789/5936Repositório InstitucionalPUBhttps://www.locus.ufv.br/oai/requestfabiojreis@ufv.bropendoar:21452016-04-12T02:13:01LOCUS Repositório Institucional da UFV - Universidade Federal de Viçosa (UFV)false |
dc.title.por.fl_str_mv |
Impacto da lavagem da polpa marrom no branqueamento, na evaporação e no meio ambiente |
dc.title.alternative.eng.fl_str_mv |
Impact of brown pulp washing in bleaching, and in evaporation and environment |
title |
Impacto da lavagem da polpa marrom no branqueamento, na evaporação e no meio ambiente |
spellingShingle |
Impacto da lavagem da polpa marrom no branqueamento, na evaporação e no meio ambiente Mendes, André Fonseca Polpa de celulose Lavagem Branqueamento Evaporação Meio ambiente Paper pulp Washing Bleaching Evaporation Enviroment CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL::TECNOLOGIA E UTILIZACAO DE PRODUTOS FLORESTAIS::TECNOLOGIA DE CELULOSE E PAPEL |
title_short |
Impacto da lavagem da polpa marrom no branqueamento, na evaporação e no meio ambiente |
title_full |
Impacto da lavagem da polpa marrom no branqueamento, na evaporação e no meio ambiente |
title_fullStr |
Impacto da lavagem da polpa marrom no branqueamento, na evaporação e no meio ambiente |
title_full_unstemmed |
Impacto da lavagem da polpa marrom no branqueamento, na evaporação e no meio ambiente |
title_sort |
Impacto da lavagem da polpa marrom no branqueamento, na evaporação e no meio ambiente |
author |
Mendes, André Fonseca |
author_facet |
Mendes, André Fonseca |
author_role |
author |
dc.contributor.authorLattes.por.fl_str_mv |
http://lattes.cnpq.br/4964245338587602 |
dc.contributor.author.fl_str_mv |
Mendes, André Fonseca |
dc.contributor.advisor-co1.fl_str_mv |
Colodette, Jorge Luiz |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4721443U9 |
dc.contributor.advisor-co2.fl_str_mv |
Jardim, Carolina Marangon |
dc.contributor.advisor-co2Lattes.fl_str_mv |
http://lattes.cnpq.br/4049385760003391 |
dc.contributor.advisor1.fl_str_mv |
Gomide, José Lívio |
dc.contributor.advisor1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4781177P5 |
dc.contributor.referee1.fl_str_mv |
Carvalho, Ana Márcia Macedo Ladeira |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/6017392658993288 |
contributor_str_mv |
Colodette, Jorge Luiz Jardim, Carolina Marangon Gomide, José Lívio Carvalho, Ana Márcia Macedo Ladeira |
dc.subject.por.fl_str_mv |
Polpa de celulose Lavagem Branqueamento Evaporação Meio ambiente |
topic |
Polpa de celulose Lavagem Branqueamento Evaporação Meio ambiente Paper pulp Washing Bleaching Evaporation Enviroment CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL::TECNOLOGIA E UTILIZACAO DE PRODUTOS FLORESTAIS::TECNOLOGIA DE CELULOSE E PAPEL |
dc.subject.eng.fl_str_mv |
Paper pulp Washing Bleaching Evaporation Enviroment |
dc.subject.cnpq.fl_str_mv |
CNPQ::CIENCIAS AGRARIAS::RECURSOS FLORESTAIS E ENGENHARIA FLORESTAL::TECNOLOGIA E UTILIZACAO DE PRODUTOS FLORESTAIS::TECNOLOGIA DE CELULOSE E PAPEL |
description |
Worldwide pulp and paper industries have undergone changing due to changes in the industrial acceleration setting associated to rapid emergence of technologies. Industry challenges touch upon aspects from raw material quality and final product, environmental considerations, production costs control as well as modification and improvement of technologies used in the manufacturing process. Development and technologies improvement may represent an alternative to ensure the prosperity of pulp and paper industries. Accordingly the aim of this work was to implement operational improvements on Suzano Pulp and Paper washing filters (in Mucuri) to increase the brownstock washing efficiency and evaluate the impact on bleaching chemicals consumption, weak black liquor circuit and environment. Basically the actions implemented for washing process optimization were: Showers washing flow reduction of the thickeners filters showers where it worked with attached sheet detaching. The filter vat level control was set up to Auto mode; vacuum valve mechanic tune; insert approximately 111 m3/h clear condensate into filtrate circuit; reduced dilution factor of first washing press and washing filters filtrate tank level control around 40 50%. The material used on this study was eucalyptus pulp produced on Suzano Pulp and Paper Mucuri BA line 1. All analysis on different situations followed the real pulp mill productions and processes. Data regarding the primary raw material for obtaining cellulose, wood, were not evaluated, since it considers that the wood chemistry and physics composition are random parameters, therefore have no influence on the results of this study. For reference values (white), industrial date were collected thirty production days before and after operational changing in the washing system. Based on the results, it was observed that there was a significant improvement in washing filters operating performance, as evidenced by the results of increasing pre-O2 delignification degree (increased from 27.84 to 31.60%), reduction on washing xiii filters filtrate conductivity (reduction from 28.92 to 25.29 mS / cm), soda loss in alkaline delignification (reduction from 19.50 to 18.75 kg / tsa), increased brightness at the entrance of bleaching (increased from 45.61 to 49.33 ° ISO), reduction of active chlorine (reduction from 44.57 to 38.97 kg / tsa), hydrogen peroxide in bleaching (reduction from 8.34 to 7.82 kg / adt). |
publishDate |
2013 |
dc.date.issued.fl_str_mv |
2013-07-15 |
dc.date.available.fl_str_mv |
2014-01-17 2015-03-26T14:01:15Z |
dc.date.accessioned.fl_str_mv |
2015-03-26T14:01:15Z |
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info:eu-repo/semantics/publishedVersion |
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info:eu-repo/semantics/masterThesis |
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masterThesis |
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publishedVersion |
dc.identifier.citation.fl_str_mv |
MENDES, André Fonseca. Impact of brown pulp washing in bleaching, and in evaporation and environment. 2013. 66 f. Dissertação (Mestrado em Qualidade da madeira; Tecnologia de celulose e papel) - Universidade Federal de Viçosa, Viçosa, 2013. |
dc.identifier.uri.fl_str_mv |
http://locus.ufv.br/handle/123456789/5936 |
identifier_str_mv |
MENDES, André Fonseca. Impact of brown pulp washing in bleaching, and in evaporation and environment. 2013. 66 f. Dissertação (Mestrado em Qualidade da madeira; Tecnologia de celulose e papel) - Universidade Federal de Viçosa, Viçosa, 2013. |
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http://locus.ufv.br/handle/123456789/5936 |
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Universidade Federal de Viçosa |
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Mestrado Profissionalizante em Tecnologia de Celulose e Papel |
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UFV |
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BR |
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Qualidade da madeira; Tecnologia de celulose e papel |
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Universidade Federal de Viçosa |
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