Determination of the residence-time distribution in industrial dryer for the production of recycled polyester

The study proposes the evaluation of the residence-time distribution (RTD) in situ in an industrial dryer for the production of recycled polyester fibers (PES) from colorless polyethylene terephthalate (PET) flakes without interruption of the production. A disturbance of the pulse type was employed,...

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Autores principales:	Zauli da Silva Felipe, Bastos Izabella Carneiro, Perna Rafael Firmani, Villalba Morales Sergio Andres
Formato:	article
Lenguaje:	EN
Publicado:	Association of the Chemical Engineers of Serbia 2021
Materias:	residence time pet flakes polyester fibers Chemical engineering TP155-156 Chemical industries HD9650-9663
Acceso en línea:	https://doaj.org/article/0d285e8c610843aaad4bccda90c8d86a
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spelling	oai:doaj.org-article:0d285e8c610843aaad4bccda90c8d86a2021-11-10T07:27:42ZDetermination of the residence-time distribution in industrial dryer for the production of recycled polyester1451-93722217-743410.2298/CICEQ200121047Zhttps://doaj.org/article/0d285e8c610843aaad4bccda90c8d86a2021-01-01T00:00:00Zhttp://www.doiserbia.nb.rs/img/doi/1451-9372/2021/1451-93722000047Z.pdfhttps://doaj.org/toc/1451-9372https://doaj.org/toc/2217-7434The study proposes the evaluation of the residence-time distribution (RTD) in situ in an industrial dryer for the production of recycled polyester fibers (PES) from colorless polyethylene terephthalate (PET) flakes without interruption of the production. A disturbance of the pulse type was employed, in which the tracer (blue PET flakes) had previously been crystalized and its concentration was obtained according to the time at the dryer outlet. Additionally, analyses of intrinsic viscosity and crystallization percentage of the PET flakes (colorless and blue) and PES intrinsic viscosity and color force were performed. By RTD, the mean residence time (322.8 min), the variance (1305.4 min2), the standard deviation (36.1 min) and the relative error (1.5%) were obtained when compared to the theoretical residence time, indicating the absence of preferred paths or flake agglomerates in the equipment. Finally, the characterization demonstrated that there was no alteration in the parameters of product quality during RTD evaluation, confirming the potential of application of this methodology for diagnoses of continuous industrial processes.Zauli da Silva FelipeBastos Izabella CarneiroPerna Rafael FirmaniVillalba Morales Sergio AndresAssociation of the Chemical Engineers of Serbiaarticleresidence timepet flakespolyester fibersChemical engineeringTP155-156Chemical industriesHD9650-9663ENChemical Industry and Chemical Engineering Quarterly, Vol 27, Iss 3, Pp 289-298 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	residence time pet flakes polyester fibers Chemical engineering TP155-156 Chemical industries HD9650-9663
spellingShingle	residence time pet flakes polyester fibers Chemical engineering TP155-156 Chemical industries HD9650-9663 Zauli da Silva Felipe Bastos Izabella Carneiro Perna Rafael Firmani Villalba Morales Sergio Andres Determination of the residence-time distribution in industrial dryer for the production of recycled polyester
description	The study proposes the evaluation of the residence-time distribution (RTD) in situ in an industrial dryer for the production of recycled polyester fibers (PES) from colorless polyethylene terephthalate (PET) flakes without interruption of the production. A disturbance of the pulse type was employed, in which the tracer (blue PET flakes) had previously been crystalized and its concentration was obtained according to the time at the dryer outlet. Additionally, analyses of intrinsic viscosity and crystallization percentage of the PET flakes (colorless and blue) and PES intrinsic viscosity and color force were performed. By RTD, the mean residence time (322.8 min), the variance (1305.4 min2), the standard deviation (36.1 min) and the relative error (1.5%) were obtained when compared to the theoretical residence time, indicating the absence of preferred paths or flake agglomerates in the equipment. Finally, the characterization demonstrated that there was no alteration in the parameters of product quality during RTD evaluation, confirming the potential of application of this methodology for diagnoses of continuous industrial processes.
format	article
author	Zauli da Silva Felipe Bastos Izabella Carneiro Perna Rafael Firmani Villalba Morales Sergio Andres
author_facet	Zauli da Silva Felipe Bastos Izabella Carneiro Perna Rafael Firmani Villalba Morales Sergio Andres
author_sort	Zauli da Silva Felipe
title	Determination of the residence-time distribution in industrial dryer for the production of recycled polyester
title_short	Determination of the residence-time distribution in industrial dryer for the production of recycled polyester
title_full	Determination of the residence-time distribution in industrial dryer for the production of recycled polyester
title_fullStr	Determination of the residence-time distribution in industrial dryer for the production of recycled polyester
title_full_unstemmed	Determination of the residence-time distribution in industrial dryer for the production of recycled polyester
title_sort	determination of the residence-time distribution in industrial dryer for the production of recycled polyester
publisher	Association of the Chemical Engineers of Serbia
publishDate	2021
url	https://doaj.org/article/0d285e8c610843aaad4bccda90c8d86a
work_keys_str_mv	AT zaulidasilvafelipe determinationoftheresidencetimedistributioninindustrialdryerfortheproductionofrecycledpolyester AT bastosizabellacarneiro determinationoftheresidencetimedistributioninindustrialdryerfortheproductionofrecycledpolyester AT pernarafaelfirmani determinationoftheresidencetimedistributioninindustrialdryerfortheproductionofrecycledpolyester AT villalbamoralessergioandres determinationoftheresidencetimedistributioninindustrialdryerfortheproductionofrecycledpolyester
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Determination of the residence-time distribution in industrial dryer for the production of recycled polyester

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