Experimental and numerical study of the flux of isobutane vapors near saturation through multi-layered ceramic membranes

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985858%3A_____%2F23%3A00564364" target="_blank" >RIV/67985858:_____/23:00564364 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S138358662202161X?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S138358662202161X?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.seppur.2022.122604" target="_blank" >10.1016/j.seppur.2022.122604</a>

Result language

angličtina

Original language name

Experimental and numerical study of the flux of isobutane vapors near saturation through multi-layered ceramic membranes

Original language description

The transport of vapors of isobutane near saturation through multi-layered asymmetric membranes is investigated experimentally and theoretically. The influence of the upstream state of the vapor, whether far or close to saturation, and of the orientation of the membrane on the mass flow rate is investigated. For a membrane with five layers, the mass flux increases from about 0.25 kg m−2s−1 for a vapor further from saturation to about 0.45 kgm−2s−1 for a vapor close to saturation. Also, close to saturation the mass flux in the flow direction from the separation layer to the support is up to 50% larger than in the opposite direction. The membranes consist of three to five layers, the support has a pore size of 3 μm, the finest separationnlayer has a pore size of 20 nm. Plane, circular membranes were tested in steady-state permeation experiments. The upstream pressure varied between about 0.3 times the saturation pressure and a value a few percent smaller than the saturation pressure, which is about 3.5 bar. Pressure differences between 0.1 and 0.5 bar were applied. Theoretical descriptions of the flow process are given, assuming that condensation may take place. For one description any heat transfer is neglected and the flow is assumed to be isothermal while for two other descriptions heat transfer and temperature variations due to condensation and evaporation are considered. For the experiments presented here the mass fluxes predicted by these three descriptions do not differ by a wide margin, e.g., the predictions vary between 1.02 and 1.25 kg m−2s−1. Qualitatively, the increase of the mass flux for a vapor close to saturation and the dependence of the mass flux on the flow direction is recovered by all three descriptions.

Czech name

—

Czech description

—

Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

—

OECD FORD branch

20402 - Chemical process engineering

Project

<a href="/en/project/GC19-23760J" target="_blank" >GC19-23760J: Development of novel organic-inorganic composite materials based on dendrimers as effective gas/vapor sorbents</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2023

Confidentiality

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

Name of the periodical

Separation and Purification Technology

ISSN

1383-5866

e-ISSN

1873-3794

Volume of the periodical

306

Issue of the periodical within the volume

1 Feb

Country of publishing house

GB - UNITED KINGDOM

Number of pages

12

Pages from-to

122604

UT code for WoS article

000897447500004

EID of the result in the Scopus database

2-s2.0-85142154522