Nonstationary operation of a system of catalytic monolithic reactors for selective NOx reduction

被引：13

作者：

Jirát, J

Stepánek, F

Kubícek, M

Marek, M

机构：

[1] Prague Inst Chem Technol, Dept Chem Engn, Ctr Nonlinear Dynam Chem & Biol Syst, CR-16628 Prague 6, Czech Republic

[2] Prague Inst Chem Technol, Dept Math, Ctr Nonlinear Dynam Chem & Biol Syst, CR-16628 Prague, Czech Republic

来源：

CHEMICAL ENGINEERING SCIENCE | 1999年 / 54卷 / 13-14期

关键词：

selective NOx reduction; catalytic monoliths; thermal coupling; non-stationary operation; optimal temperature profile; vector optimization;

D O I：

10.1016/S0009-2509(98)00399-6

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

A mathematical model of thermally coupled monolithic catalytic reactors for selective NOx reduction is formulated, based on the evaluation of published kinetic data. The effect of temperature profiles on the conversion of NO is systematically studied. It is shown that when inlet streams containing reacting gas and cooling air are periodically switched between two thermally coupled monolithic reactors, one can achieve mean conversions of NO close to those corresponding to steady-state conditions with an optimal temperature profile. Operating parameters maximizing the NO conversion fdr a series of inlet gas conditions and catalyst types are obtained as a solution of a vector-optimization problem. Multiplicity of cyclic steady states is found in a certain parameter range under periodic operation. (C) 1999 Elsevier Science Ltd. All rights reserved.

引用

页码：2609 / 2618

页数：10

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