Aspects of emergency relief design for reactive systems
Article first published online: 17 JUN 2004
Copyright © 1994 American Institute of Chemical Engineers
Process Safety Progress
Volume 13, Issue 4, pages 177–182, October 1994
How to Cite
Goetz, D. D. and Sawrey, J. S. (1994), Aspects of emergency relief design for reactive systems. Proc. Safety Prog., 13: 177–182. doi: 10.1002/prs.680130402
- Issue published online: 17 JUN 2004
- Article first published online: 17 JUN 2004
An approach is presented to accurately design emergency relief systems for even the most complex chemical reactions. Two examples illustrate how large differences in relief requirements can result if small, but important, aspects of the calorimetry data are overlooked. Although both simple and rigorous kinetic models may seem to predict calorimetry data reasonably well, these examples demonstrate the importance of well-designed experiments, optimization algorithms, rigorous kinetic modeling, correct physical properties, and dynamic simulations.
The first example shows how the inclusion of a subtle equilibrium reaction in the kinetic model will allow venting of an intermediate species, decreasing the reactant available for the highly exothermic irreversible reaction. The second example emphasizes the importance of a rigorous model for the decomposition of a large molecule where bond cleavage can occur between repetitive groups.
This example takes advantage of the tempering effect of intermediate decomposition products which are accounted forwith the rigorous model.