Pressure drop evolution during dust loading of hollow-fiber membranes

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F19%3APU133920" target="_blank" >RIV/00216305:26210/19:PU133920 - isvavai.cz</a>

Výsledek na webu

<a href="https://filtech.de/conference/conference-programme-2019" target="_blank" >https://filtech.de/conference/conference-programme-2019</a>

DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Pressure drop evolution during dust loading of hollow-fiber membranes

Popis výsledku v původním jazyce

This work focuses on the pressure drop evolution during particle loading of polypropylene HFMs. We used two types of dust to simulate a particle laden environment. Pressure drop, permeate velocity, and accumulated mass of particles until reaching the final pressure drop were recorded. Dust-holding capacity was measured after each experiment. The pressure drop increased slowly when loaded with high dust concentrations. The membrane was easily cleanable simply by shaking, with a minimal residual pressure drop. The loading profile (pressure drop/dust load curve) varied with the inner diameter of hollow fibers and permeate velocity. The loading profile of a new HFM was independent of dust concentration, which is similar to the behavior of planar fabric-based filters. However, when a cleaned membrane was used, the dependence on the dust concentration was obvious. The same was true for the fouling rate, which was higher for the cleaned membrane than for the pristine one. Based on the results, it can be concluded that the HFMs can be repeatedly cleaned and reused, which is not possible in commercially available HEPA filters. At the same time, however, they are limited to a very specific low volume, or short-term high volume applications due to the higher pressure drops caused by the hollow-fiber geometry.

Název v anglickém jazyce

Pressure drop evolution during dust loading of hollow-fiber membranes

Popis výsledku anglicky

This work focuses on the pressure drop evolution during particle loading of polypropylene HFMs. We used two types of dust to simulate a particle laden environment. Pressure drop, permeate velocity, and accumulated mass of particles until reaching the final pressure drop were recorded. Dust-holding capacity was measured after each experiment. The pressure drop increased slowly when loaded with high dust concentrations. The membrane was easily cleanable simply by shaking, with a minimal residual pressure drop. The loading profile (pressure drop/dust load curve) varied with the inner diameter of hollow fibers and permeate velocity. The loading profile of a new HFM was independent of dust concentration, which is similar to the behavior of planar fabric-based filters. However, when a cleaned membrane was used, the dependence on the dust concentration was obvious. The same was true for the fouling rate, which was higher for the cleaned membrane than for the pristine one. Based on the results, it can be concluded that the HFMs can be repeatedly cleaned and reused, which is not possible in commercially available HEPA filters. At the same time, however, they are limited to a very specific low volume, or short-term high volume applications due to the higher pressure drops caused by the hollow-fiber geometry.

Druh

D - Stať ve sborníku

CEP obor

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OECD FORD obor

20402 - Chemical process engineering

Projekt

<a href="/cs/project/TJ02000170" target="_blank" >TJ02000170: Filtrace nanočástic z 3D tisku pomocí membrán z dutých vláken</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2019

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

International Conference and Exhibition for Filtration and Separation Technology, Filtech 2019

ISBN

978-3-941655-17-1

ISSN

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e-ISSN

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Počet stran výsledku

8

Strana od-do

1-8

Název nakladatele

Neuveden

Místo vydání

Kolín n. Rýnem

Místo konání akce

Kolín n. Rýnem

Datum konání akce

22. 10. 2019

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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