IDENTIFICATION OF NEW CONTROL STRUCTURES FOR A TUBULAR AMMONIA REACTOR-HEAT EXCHANGER SYSTEM USING DYNAMIC RESILIENCE ANALYSIS

  • A.O.F. Williams
  • V.O. Adeniyi

Abstract

The task of control structure selection for a tubular ammonia reactor-heat exchanger system using dynamic
resilience analysis is presented. Based on the linearized ninth-order state-space model of the reactor-heat
exchanger system presented in the literature, sixty (60) 2 2 , twenty (20) 23, and thirty (30) 33
alternate control structures corresponding to the choice of two controlled outputs and two manipulated
inputs (square system); two controlled outputs and three manipulated inputs (i.e. non-square system); and
three controlled outputs and three manipulated inputs (i.e. square system) respectively, were analyzed. The
dynamic resilience analysis identified new control structures for this reactor-heat exchanger system which
have not been previously reported in the literature. These new control structures have potential for
improved control design and closed-loop performance for the tubular reactor-heat exchanger system
beyond what is achievable using the 2 2 control structure previously reported in the literature.

Author Biographies

A.O.F. Williams

Department of Chemical & Petroleum Engineering, University of Lagos, Akoka, Lagos.

V.O. Adeniyi

Department of Chemical & Petroleum Engineering, University of Lagos, Akoka, Lagos.

Published
2019-07-23