Abstract
Production, transportation, and storage of hazardous chemicals represent potential risks to the environment, the public, and the producers themselves. The release to the atmosphere of materials that may form mixtures denser than air is of special concern since they disperse at ground level. Toxic or combustible materials with boiling points below ambient temperature, such as chlorine and ammonia, are usually stored or transported as a saturated liquid. A release from such a system is likely to produce vaporization of much or all of the stored liquid, leading to entrainment and/or formation of liquid droplets in th: vapor release, affecting the density of the mixture considerably. Current dispersion models limit their study to aerosols that are made up by ideal gases or liquids. This work proposes extending the existing HGSYSTEM, a widely used vapor dispersion simulator and one known as a good performer in terms of dispersion simulation, to treat non-ideal solutions. This thesis gives a description of the fundamentals of vapor dispersion models currently used in industry and the one proposed here are explained in detail. At the end, data collected and the statistical comparison with the observed concentrations and the predicted ones by other simulators are given.
Lara, Armando (1999). Dense gas dispersion modeling for aqueous releases. Master's thesis, Texas A&M University. Available electronically from
https : / /hdl .handle .net /1969 .1 /ETD -TAMU -1999 -THESIS -L368.