State space formulation of ammonia reactor dynamics

Patnaik, L. M. ; Viswanadham, N. ; Sarma, I. G. (1980) State space formulation of ammonia reactor dynamics Computers & Chemical Engineering, 4 (4). pp. 215-222. ISSN 0098-1354

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The specific objective of this paper is to develop a state space model of a tubular ammonia reactor which is the heart of an ammonia plant in a fertilizer complex. A ninth order model with three control inputs and two disturbance inputs is generated from the nonlinear distributed model using linearization and lumping approximations. The lumped model is chosen such that the steady state temperature at the exit of the catalyst bed computed from the simplified state space model is close enough to the one computed from the nonlinear steady state model. The model developed in this paper is very useful for the design of continuous/discrete versions of single variable/multivariable control algorithms.

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Deposited On:30 Mar 2011 10:35
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