A Model for Correcting the Pressure Drop between Two Monoliths

This paper is concerned with the modeling of the pressure drop through monolith honeycombs. Monolith substrates are promising for the intensification of catalytic processes, especially because of their low back-pressure. There have been several improvements in the modeling of monolith reactors durin...

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Autor principal:	Ivan Cornejo
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	monolith structured reactor substrate pressure drop CFD LES Chemical technology TP1-1185 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/889f6dc1e02c4b91b80d0228e3777127
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spelling	oai:doaj.org-article:889f6dc1e02c4b91b80d0228e37771272021-11-25T17:05:45ZA Model for Correcting the Pressure Drop between Two Monoliths10.3390/catal111113142073-4344https://doaj.org/article/889f6dc1e02c4b91b80d0228e37771272021-10-01T00:00:00Zhttps://www.mdpi.com/2073-4344/11/11/1314https://doaj.org/toc/2073-4344This paper is concerned with the modeling of the pressure drop through monolith honeycombs. Monolith substrates are promising for the intensification of catalytic processes, especially because of their low back-pressure. There have been several improvements in the modeling of monolith reactors during the last decade, most of them focused on a single substrate configuration, while research in multiple substrates in a single reactor is still sparse. One example is the so-called "minor losses", such as those because of the flow entering and leaving a substrate. Both phenomena interact when two monoliths are placed close in series, and the extra losses produced by them may become relevant when relatively short monoliths are used. In this paper, a spatially resolved computational model of monolith channels arranged in series is used to compute the extra pressure drop because of the flow leaving one substrate and entering the next one downstream. Several Reynolds numbers and spacing lengths for the channels between substrates are investigated. According to the results, for close-coupled monoliths, the inlet and outlet effects produce a negligible pressure drop compared to that in a single monolith configuration. This phenomenon can be accounted for by introducing a correction factor. The magnitude of the correction factor depends on the channel’s Reynolds number, diameter, and spacing length. A model for such a factor is proposed. The model accurately predicts the trend and magnitude of the correction factor.Ivan CornejoMDPI AGarticlemonolithstructured reactorsubstratepressure dropCFDLESChemical technologyTP1-1185ChemistryQD1-999ENCatalysts, Vol 11, Iss 1314, p 1314 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	monolith structured reactor substrate pressure drop CFD LES Chemical technology TP1-1185 Chemistry QD1-999
spellingShingle	monolith structured reactor substrate pressure drop CFD LES Chemical technology TP1-1185 Chemistry QD1-999 Ivan Cornejo A Model for Correcting the Pressure Drop between Two Monoliths
description	This paper is concerned with the modeling of the pressure drop through monolith honeycombs. Monolith substrates are promising for the intensification of catalytic processes, especially because of their low back-pressure. There have been several improvements in the modeling of monolith reactors during the last decade, most of them focused on a single substrate configuration, while research in multiple substrates in a single reactor is still sparse. One example is the so-called "minor losses", such as those because of the flow entering and leaving a substrate. Both phenomena interact when two monoliths are placed close in series, and the extra losses produced by them may become relevant when relatively short monoliths are used. In this paper, a spatially resolved computational model of monolith channels arranged in series is used to compute the extra pressure drop because of the flow leaving one substrate and entering the next one downstream. Several Reynolds numbers and spacing lengths for the channels between substrates are investigated. According to the results, for close-coupled monoliths, the inlet and outlet effects produce a negligible pressure drop compared to that in a single monolith configuration. This phenomenon can be accounted for by introducing a correction factor. The magnitude of the correction factor depends on the channel’s Reynolds number, diameter, and spacing length. A model for such a factor is proposed. The model accurately predicts the trend and magnitude of the correction factor.
format	article
author	Ivan Cornejo
author_facet	Ivan Cornejo
author_sort	Ivan Cornejo
title	A Model for Correcting the Pressure Drop between Two Monoliths
title_short	A Model for Correcting the Pressure Drop between Two Monoliths
title_full	A Model for Correcting the Pressure Drop between Two Monoliths
title_fullStr	A Model for Correcting the Pressure Drop between Two Monoliths
title_full_unstemmed	A Model for Correcting the Pressure Drop between Two Monoliths
title_sort	model for correcting the pressure drop between two monoliths
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/889f6dc1e02c4b91b80d0228e3777127
work_keys_str_mv	AT ivancornejo amodelforcorrectingthepressuredropbetweentwomonoliths AT ivancornejo modelforcorrectingthepressuredropbetweentwomonoliths
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A Model for Correcting the Pressure Drop between Two Monoliths

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