Gas-phase mass-transfer measurements in a falling-film microreactor
Identifieur interne : 000976 ( Hal/Checkpoint ); précédent : 000975; suivant : 000977Gas-phase mass-transfer measurements in a falling-film microreactor
Auteurs : J. M. Commenge [France] ; T. Obein [France] ; S. Rode [France] ; P. Pitiot [France] ; M. Matlosz [France]Source :
- Chemical Engineering Science [ 0009-2509 ] ; 2011.
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Abstract
The industrial-scale performance of gas-liquid reactors is difficult to control when very rapid or highly exothermic reactions are involved. Microstructured reactors offer new opportunities for these reactions by enabling precise heat management and accurate control of operating conditions. The present study examines experimentally the gas-phase mass-transfer characteristics of a reactor tool for the characterization of gas-liquid reactions: a falling-film microreactor. A well-known chemical test system, the absorption of sulfur dioxide SO2 by sodium hydroxide NaOH is employed to determine the characteristics. The measurements of inlet and outlet concentrations in the gas phase enable the mass-transfer coefficient to be determined. The mass-transfer characteristics, in terms of dimensionless Sherwood number ShG, are then related to the hydrodynamic characteristics of the gas phase, through the Reynolds number ReG, and the physico-chemical properties of the reactional system, through the Schmidt number ScG. A strong dependence of dimensionless Sherwood number on gas-phase Reynolds number is observed, probably resulting from the specific features of the geometry of the gas-phase inlet.
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DOI: 10.1016/j.ces.2010.12.025
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Microstructured reactors offer new opportunities for these reactions by enabling precise heat management and accurate control of operating conditions. The present study examines experimentally the gas-phase mass-transfer characteristics of a reactor tool for the characterization of gas-liquid reactions: a falling-film microreactor. A well-known chemical test system, the absorption of sulfur dioxide SO2 by sodium hydroxide NaOH is employed to determine the characteristics. The measurements of inlet and outlet concentrations in the gas phase enable the mass-transfer coefficient to be determined. The mass-transfer characteristics, in terms of dimensionless Sherwood number ShG, are then related to the hydrodynamic characteristics of the gas phase, through the Reynolds number ReG, and the physico-chemical properties of the reactional system, through the Schmidt number ScG. A strong dependence of dimensionless Sherwood number on gas-phase Reynolds number is observed, probably resulting from the specific features of the geometry of the gas-phase inlet.</div></front></TEI><hal api="V3"><titleStmt><title xml:lang="en">Gas-phase mass-transfer measurements in a falling-film microreactor</title><author role="aut"><persName><forename type="first">J.M.</forename><surname>Commenge</surname></persName><email></email><idno type="halauthor">96207</idno><affiliation ref="#struct-211875"></affiliation></author><author role="aut"><persName><forename type="first">T.</forename><surname>Obein</surname></persName><email></email><idno type="halauthor">311372</idno><affiliation ref="#struct-211875"></affiliation></author><author role="aut"><persName><forename type="first">S.</forename><surname>Rode</surname></persName><email></email><idno type="halauthor">92083</idno><affiliation ref="#struct-211875"></affiliation></author><author role="aut"><persName><forename type="first">P.</forename><surname>Pitiot</surname></persName><email></email><idno type="halauthor">103002</idno><affiliation ref="#struct-14449"></affiliation></author><author role="aut"><persName><forename type="first">M.</forename><surname>Matlosz</surname></persName><email></email><idno type="halauthor">92086</idno><affiliation ref="#struct-211875"></affiliation></author><editor role="depositor"><persName><forename>Josiane</forename><surname>Moras</surname></persName><email>josiane.moras@ensic.inpl-nancy.fr</email></editor></titleStmt><editionStmt><edition n="v1" type="current"><date type="whenSubmitted">2011-07-06 10:12:11</date><date type="whenModified">2016-05-17 10:14:36</date><date type="whenReleased">2011-07-06 10:12:11</date><date type="whenProduced">2011</date></edition><respStmt><resp>contributor</resp><name key="109516"><persName><forename>Josiane</forename><surname>Moras</surname></persName><email>josiane.moras@ensic.inpl-nancy.fr</email></name></respStmt></editionStmt><publicationStmt><distributor>CCSD</distributor><idno type="halId">hal-00606332</idno><idno type="halUri">https://hal.archives-ouvertes.fr/hal-00606332</idno><idno type="halBibtex">commenge:hal-00606332</idno><idno type="halRefHtml">Chemical Engineering Science, Elsevier, 2011, 66 ((6)), pp. 1212 - 1218. <10.1016/j.ces.2010.12.025></idno><idno type="halRef">Chemical Engineering Science, Elsevier, 2011, 66 ((6)), pp. 1212 - 1218. <10.1016/j.ces.2010.12.025></idno></publicationStmt><seriesStmt><idno type="stamp" n="CNRS">CNRS - Centre national de la recherche scientifique</idno><idno type="stamp" n="LRGP-UL">LRGP</idno><idno type="stamp" n="UNIV-LORRAINE">Université de Lorraine</idno></seriesStmt><notesStmt><note type="audience" n="2">International</note><note type="popular" n="0">No</note><note type="peer" n="1">Yes</note></notesStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Gas-phase mass-transfer measurements in a falling-film microreactor</title><author role="aut"><persName><forename type="first">J.M.</forename><surname>Commenge</surname></persName><idno type="halAuthorId">96207</idno><affiliation ref="#struct-211875"></affiliation></author><author role="aut"><persName><forename type="first">T.</forename><surname>Obein</surname></persName><idno type="halAuthorId">311372</idno><affiliation ref="#struct-211875"></affiliation></author><author role="aut"><persName><forename type="first">S.</forename><surname>Rode</surname></persName><idno type="halAuthorId">92083</idno><affiliation ref="#struct-211875"></affiliation></author><author role="aut"><persName><forename type="first">P.</forename><surname>Pitiot</surname></persName><idno type="halAuthorId">103002</idno><affiliation ref="#struct-14449"></affiliation></author><author role="aut"><persName><forename type="first">M.</forename><surname>Matlosz</surname></persName><idno type="halAuthorId">92086</idno><affiliation ref="#struct-211875"></affiliation></author></analytic><monogr><idno type="halJournalId" status="VALID">11610</idno><idno type="issn">0009-2509</idno><title level="j">Chemical Engineering Science</title><imprint><publisher>Elsevier</publisher><biblScope unit="volume">66</biblScope><biblScope unit="issue">(6)</biblScope><biblScope unit="pp">pp. 1212 - 1218</biblScope><date type="datePub">2011</date></imprint></monogr><idno type="doi">10.1016/j.ces.2010.12.025</idno></biblStruct></sourceDesc><profileDesc><langUsage><language ident="en">English</language></langUsage><textClass><keywords scheme="author"><term xml:lang="en">Microstructure</term><term xml:lang="en">Films</term><term xml:lang="en">Chemical reactors</term><term xml:lang="en">Falling-film microreactor</term><term xml:lang="en">Mass transfer</term><term xml:lang="en">Multiphase reactors</term></keywords><classCode scheme="halDomain" n="spi.gproc">Engineering Sciences [physics]/Chemical and Process Engineering</classCode><classCode scheme="halTypology" n="ART">Journal articles</classCode></textClass><abstract xml:lang="en">The industrial-scale performance of gas-liquid reactors is difficult to control when very rapid or highly exothermic reactions are involved. Microstructured reactors offer new opportunities for these reactions by enabling precise heat management and accurate control of operating conditions. The present study examines experimentally the gas-phase mass-transfer characteristics of a reactor tool for the characterization of gas-liquid reactions: a falling-film microreactor. A well-known chemical test system, the absorption of sulfur dioxide SO2 by sodium hydroxide NaOH is employed to determine the characteristics. The measurements of inlet and outlet concentrations in the gas phase enable the mass-transfer coefficient to be determined. The mass-transfer characteristics, in terms of dimensionless Sherwood number ShG, are then related to the hydrodynamic characteristics of the gas phase, through the Reynolds number ReG, and the physico-chemical properties of the reactional system, through the Schmidt number ScG. A strong dependence of dimensionless Sherwood number on gas-phase Reynolds number is observed, probably resulting from the specific features of the geometry of the gas-phase inlet.</abstract></profileDesc></hal></record>Pour manipuler ce document sous Unix (Dilib)
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