THE MASS BALANCE FOR GAS-PHASE REACTIONS IN TUBULAR REACTORS

被引：6

作者：

BOS, ANR ^{[1
]}

WESTERTERP, KR ^{[1
]}

机构：

[1] TWENTE UNIV TECHNOL,FAC CHEM TECHNOL,CHEM REACT ENGN LABS,POB 217,7500 AE ENSCHEDE,NETHERLANDS

来源：

CHEMICAL ENGINEERING COMMUNICATIONS | 1991年 / 99卷

关键词：

TUBULAR REACTORS; GAS PHASE; MASS BALANCE;

D O I：

10.1080/00986449108911584

中图分类号：

TQ [化学工业];

学科分类号：

0817 ;

摘要：

In this paper we discuss the use of an approximated form of the mass balance equation for a tubular reactor in which a gas phase reaction is carried out. By means of three examples it is shown that if density variations are not taken into account in a correct way, surprisingly high errors can occur. More specifically, if the mass balance is written down in a generally applied approximate form, i.e. using udc/dz instead of d{uc)/dz—u, c and z respectively being the gas velocity, concentration and length coordinate—even for density variations as low as 5%, errors of a magnitude higher than 5% can be introduced. This is particularly true for multiple reaction systems. The inexpediency of approximating d(uc) by udc is stressed: the approximation is in no way a simplification. Therefore, this commonly seen approximation should never be applied. © 1991, Taylor & Francis Group, LLC. All rights reserved.

引用

页码：139 / 153

页数：15