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Titolo:
Enhancement of gas-liquid mass transfer by small reactive particles at realistically high mass transfer coefficients: absorption of sulfur dioxide into aqueous slurries of Ca(OH)(2) and Mg(OH)(2) particles
Autore:
Dagaonkar, MV; Beenackers, AACM; Pangarkar, VG;
Indirizzi:
Univ Groningen, Dept Chem Engn, NL-9747 AG Groningen, Netherlands Univ Groningen Groningen Netherlands NL-9747 AG G Groningen, Netherlands Univ Mumbai, Dept Chem Engn, Mumbai 400019, India Univ Mumbai Mumbai India 400019 ai, Dept Chem Engn, Mumbai 400019, India
Titolo Testata:
CHEMICAL ENGINEERING JOURNAL
fascicolo: 1-3, volume: 81, anno: 2001,
pagine: 203 - 212
SICI:
1385-8947(20010101)81:1-3<203:EOGMTB>2.0.ZU;2-4
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHEMICAL ABSORPTION; FINE PARTICLES; HYDROXIDE;
Keywords:
reactive solids; enhancement; solid dissolution; calcium hydroxide; magnesium hydroxide; sulfur dioxide;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
20
Recensione:
Indirizzi per estratti:
Indirizzo: Beenackers, AACM Univ Groningen, Dept Chem Engn, Nijenborgh 4, NL-9747 AG Groningen, Netherlands Univ Groningen Nijenborgh 4 Groningen Netherlands NL-9747 AG
Citazione:
M.V. Dagaonkar et al., "Enhancement of gas-liquid mass transfer by small reactive particles at realistically high mass transfer coefficients: absorption of sulfur dioxide into aqueous slurries of Ca(OH)(2) and Mg(OH)(2) particles", CHEM ENGN J, 81(1-3), 2001, pp. 203-212

Abstract

Chemical absorption of pure SO2 into aqueous slurries of fine and reactiveCa(OH)(2) and Mg(OH)(2) was studied in a stirred vessel at 298 K at realistically high mass transfer coefficients. The absorption process was theoretically analyzed using two different models. For the SO2-Ca(OH)(2) system, asingle reaction plane model was used to estimate the theoretical enhancement factor and for the SO2-Mg(OH)(2) system, a two-reaction plane model incorporating the solids dissolution promoted by the reactions with the absorbed SO2 in the liquid film was employed. For the later system, the theoretical results could be more accurately predicted by a correct approach to estimate the enhancement caused due to suspended solids and the overall enhancement factor. The extra enhancement observed for the SO2-Mg(OH)(2) system could be explained from the reaction between SO2 and the dissolved [SO3](2-). (C) 2001 Elsevier Science B.V. All rights reserved.

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Documento generato il 02/04/20 alle ore 17:33:57