Dynamic Response Analysis of a Packed Bed Tubular Reactor

Abstract

To design rationally a chemical reactor with its associated control system, it is necessary toestimate the dynamic response of the reactor. In this paper, the dynamic response of the outputconcentration to the input concentration change for a packed bed tubular reactor has been studied.
In case of the isothermal operation, the transfer function could be derived by solving the partialdifferential equation which describes the material balance and the rate of reaction.
The transfer function of a packed bed has a form of G (s)=e^{-H (s)} where H (s) is rather complicatedfunction of s, and the frequency response can be estimated by numerical calculation using thefundamental kinetic parameters for the rate of reaction.
To simplify this tedious calculation, the authors present an approximate form of transfer functionwhich has good agreement with the special condition.