文档介绍：Chemical Product and Process
Modeling
Volume 2, Issue 1 2007 Article 5
Advanced Modeling of Reactive Separation
Units with Structured Packings
E. Y. Kenig∗
∗Univ Dortmund, e.******@-
Copyright
c 2007 The Berkeley Electronic Press. All rights reserved.
Advanced Modeling of Reactive Separation
Units with Structured Packings
E. Y. Kenig
Abstract
Reactive bining mass transfer with simultaneous chemical reactions within
a single column unit provide an important synergistic effect and bring about several advantages.
The influence of column internals in reactive separations increases significantly, because these in-
ternals have to enhance both separation and reaction and maintain a sound balance between them.
To solve this problem, a novel generation of column internals with enhanced mass transfer perfor-
mance and low pressure drop has been created. Among them, corrugated packings of the regular
type or structured packings have gained a wide acceptance.
This paper gives a state-of-the-art review of the structured packings modeling methods, focus-
ing on two innovative and particularly promising approaches. The first of them is based on the
application of CFD, whereas the second one employs the idea of hydrodynamic analogy between
complex and simple flow patterns. Both approaches are illustrated with several case studies.
KEYWORDS: reactive separations, structured packings, mass transfer, CFD, hydrodynamic analo-
gies
Kenig: Modeling of Reactive Separation Units with Structured Packings
INTRODUCTION
Manufacturing of chemical products from selected feed stocks is based on a
variety of chemical reactions. The reaction extend is often limited by the chemical
equilibrium between the reactants and products, thus reducing the conversion and
selectivity towards the main product. The process must then include the
separation of the equilibrium mixture and recycling of the reactants.
Conventionally, each unit separ