Accidental releases of two-phase multicomponent critical flow from horizontal pipes
Article first published online: 16 APR 2004
Copyright © 2000 American Institute of Chemical Engineers (AIChE)
Process Safety Progress
Volume 19, Issue 4, pages 191–198, Winter 2000
How to Cite
Verlicchi, P., Leonelli, P. and Spadoni, G. (2000), Accidental releases of two-phase multicomponent critical flow from horizontal pipes. Proc. Safety Prog., 19: 191–198. doi: 10.1002/prs.680190404
- Issue published online: 16 APR 2004
- Article first published online: 16 APR 2004
An accident involving a two-phase release can result in serious consequences for people as well as the environment. Consequently, tools are needed to give accurate predictions of the discharge rate, physical state, composition of released material, and chocked pressure in order to improve process safety efficiency.
This paper discusses possible approaches to the examination of two-phase critical releases and presents a slip equilibrium model which provides critical flow rate, critical pressure, and phase fraction of the two phases emerging from an accidentally broken pipe containing a liquefied gas mixture under pressure.
Comparisons between experimental critical flow rates and model predictions are favorable in both monocomponent and multicomponent mixtures.