Approximate characteristics of a moving temperature front in a fixed-bed catalytic reactor: Effect of mass dispersion

TY - JOUR

T1 - Approximate characteristics of a moving temperature front in a fixed-bed catalytic reactor

T2 - Effect of mass dispersion

AU - Nekhamkina, Olga

AU - Sheintuch, Moshe

PY - 2009/11/15

Y1 - 2009/11/15

N2 - We derive approximate relations for the propagation velocity and the maximal temperature rise of an "ideal" 1-D front in a pseudo-homogeneous packed bed reactor (PBR) model with a first order activated kinetics, accounting for a finite mass Peclet number (P eC). These relations are compared with known approximations for P eC → ∞ and are verified by direct numerical simulations showing a good agreement within a wide domain of parameters if P eC > P eT, which typically applies for PBRs.

AB - We derive approximate relations for the propagation velocity and the maximal temperature rise of an "ideal" 1-D front in a pseudo-homogeneous packed bed reactor (PBR) model with a first order activated kinetics, accounting for a finite mass Peclet number (P eC). These relations are compared with known approximations for P eC → ∞ and are verified by direct numerical simulations showing a good agreement within a wide domain of parameters if P eC > P eT, which typically applies for PBRs.

KW - Approximations

KW - Front velocity

KW - Maximal temperature rise

KW - Moving fronts

KW - Packed bed

UR - http://www.scopus.com/inward/record.url?scp=75149156091&partnerID=8YFLogxK

U2 - 10.1016/j.cej.2009.04.043

DO - 10.1016/j.cej.2009.04.043

M3 - 文章

AN - SCOPUS:75149156091

SN - 1385-8947

VL - 154

SP - 115

EP - 119

JO - Chemical Engineering Journal

JF - Chemical Engineering Journal

IS - 1-3

ER -