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Titolo:
SIMULATION OF IMPERFECT MICROMIXING FOR FIRST-ORDER ADIABATIC REACTIONS - THE COALESCENCE-DISPERSION MODEL
Autore:
SHEIKH F; VIGIL RD;
Indirizzi:
IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM ENGN AMES IA 50011 IOWA STATE UNIV SCI & TECHNOL,DEPT CHEM ENGN AMES IA 50011
Titolo Testata:
Chemical Engineering Science
fascicolo: 12, volume: 53, anno: 1998,
pagine: 2137 - 2142
SICI:
0009-2509(1998)53:12<2137:SOIMFF>2.0.ZU;2-X
Fonte:
ISI
Lingua:
ENG
Soggetto:
REACTORS; FLUIDS;
Keywords:
MICROMIXING; NONISOTHERMAL; COALESCENCE-DISPERSION; ADIABATIC; REACTORS; BISTABILITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
9
Recensione:
Indirizzi per estratti:
Citazione:
F. Sheikh e R.D. Vigil, "SIMULATION OF IMPERFECT MICROMIXING FOR FIRST-ORDER ADIABATIC REACTIONS - THE COALESCENCE-DISPERSION MODEL", Chemical Engineering Science, 53(12), 1998, pp. 2137-2142

Abstract

A nonisothermal extension of the coalescence-dispersion (CD) model was developed to study the effects of micromixing on the bistability of adiabatic first-order reactions in continuously fed stirred tank reactors. The predictions of this nonisothermal CD model, which can also beused to calculate unstable solution branches, closely agree with calculations from the nonisothermal interaction exchange with the mean (IEM) model when the characteristic mass and thermal micromixing times are identical. The model predicts that micromixing has little effect on the overall conversion and temperature on the flow branch for adiabatic first-order reactions. However, the exit temperature distributions can be significantly altered as the mixing becomes decreasingly efficient. In contrast, mixing significantly influences the overall conversion and temperature when the reactor operates on the thermodynamic branch, but the exit temperature distributions show little qualitative change. (C) 1998 Elsevier Science Ltd. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/12/20 alle ore 06:34:09