FAULT IDENTIFICATION AND IMPLEMENTATION OF IMPROVEMENT IN THE CHLORINE DIOXIDE FLOW MESH FOR PULP PRODUCTION
Abstract
This work aims to present results of an improvement project developed in an industry in the pulp and paper segment of the Ribeirão Preto region, in order to solve problems in the last phase of the manufacturing process called bleaching. The object of study focuses on the chlorine dioxide flow control mesh, used for pulp production, in which it was observed unexpected performance of the substance flow. Chlorine dioxide is used in the pulp bleaching process and must be accurately dosed for a good quality of the final product. To achieve the objective explained, theoretical concepts of the process were initially approached, then an analysis of instruments such as magnetic flow meter and control valve, computer programs used for evaluation and study of critical meshes. For the analysis of the problem, the DMAIC methodology was used, during the study and practices in the field it was found that all the instruments in the mesh were in regular functioning, but there was a variation in the control of chlorine dioxide flow, affecting the final product, cellulose. After the study it was concluded that the pipe curve was influencing the indication of the flow meter, generating bubbles in the flow of the chemical compound and interfering in the principle of measurement. After changing the pipe curve, there was an improvement in the passage of the substance, and the chlorine dioxide flow control mesh operated at quality levels acceptable by the company.
References
AQUARIUS SOFTWARE https://www.aquarius.com.br/blog/artigos/gestao-de-malhas-de- controle-mais-intuitiva-e-poderosa/ > acesso em 05 set. de 2021
BAYER, F. M.; ARAÚJO, O. C. B. Controle Automático de Processos. 3 ed. Santa Maria- RS: Colégio Técnico Industrial de Santa Maria para o Sistema Escola Técnica Aberta do Brasil – e-Tec Brasil., 2011. 92 p. DisponÃvel em: http://estudio01.proj.ufsm.br/cadernos_automacao/quinta_etapa/controle_automatico_process os_2012. Acesso em: 5 set. 2021
BOJORGE, N. Válvulas de controle: Sistema de controle e instrumentação. Departamento de engenharia QuÃmica e de petróleo- UFF, 2017. DisponÃvel em: https://www.professores.uff.br/ninoska/wp- content/uploads/sites/57/2017/08/Aula01_Instrumen_Introd_2sem2014.pdf. Acesso em: 9 out. 2021.
BRUNETTI, F. Mecânica dos Fluidos, 2 ed. revisada, São Paulo, Prentice Hall, 2008
CAMPOS, E. S.; FOELKEL, C. A evolução tecnológica do setor de celulose e papel no Brasil. São Paulo: Associação Brasileira Técnica de Celulose e Papel, 2017.
CONTROL Station‘s State-Based Analytics Enhances Value and Reach of Leading CLPM Solution. Automation.com, 27 ago. 2021. DisponÃvel em: https://www.automation.com/en- us/products/august-2021/control-station-state-based-analytics-clpm. Acesso em: 4 set. 2021.
CORDEIRO, M. Fundamentos Básicos Sobre Válvula de Controle. Automação Instrumentação Industrial, Atualizado: 21 de Abril de 2020. DisponÃvel em: < https://mauriciosscordeiro.wixsite.com/instrumentacao/post/princ%C3%ADpios- b%C3%A1sicos-de-v%C3%A1lvulas>. Acesso em 04 de set. de 2021.
ENGINSTREL ENGEMATIC. Conversor para medidor eletromagnético de vazão. Manual do Usuário 583 TM. DisponÃvel em: < https://www.engematic.com.br/admin/public/img/583tm-manual-do-usuario-6.pdf >. Acessado em 04 de set. de 2021.
FEY, A. Papel e Celulose : O processo de produção de celulose. Bioblog, 16 set. 2016. DisponÃvel em: <http://www.bioblog.com.br/o-processo-de-producao-de-celulose/ >.Acesso em 04 de set. de 2021.
GARCIA, G. Controle de processos Industriais-volume 1: estratégias convencionais, São Paulo, Editora Edgard Blucher, 2017.
HARRIS, T. J. Assessment of Control Loop Performance. The Canadian Journal of Chemical Engineering, v. Volume 67, 1989.
MAGALHÃES, L. Celulose. Toda matéria, atualizado em 6 de junho de 2020. DisponÃvel em: <https://www.todamateria.com.br/celulose/> Acesso em 03 de set. de 2021.
SENAI. Elementos finais de controle. Senai, 1999. DisponÃvel em :
<https://www.slideshare.net/akerman22/instrumentao-elementos-finais-de-controle-senai-cst
>. Acesso em 04 de set. de 2021
WEKERMA, C., Métodos PDCA e DMAIC e suas ferramentas analÃticas. São Paulo: Atlas, 2020
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