Calculation methodology of pollutants dispersion during technological operations of high pressure gas outgassing at PJSC "Gazprom" enterprises
UDC: 504.3.054
DOI: 10.33285/2411-7013-2022-3(306)-5-11
Authors:
ROSTOVTSEV VADIM O.1,
SHIROKOV VLADIMIR A.
1,
KLIMENKO EVGENY T.1
1 National University of Oil and Gas "Gubkin University", Moscow, Russian Federation
Keywords: gas bleed, outgassing, ground concentrations, pollutant dispersion
Annotation:
The article considers a methodology based on the procedure for calculating surface concentrations of gas from sources with variable emission parameters. The need for such a technique is caused by the impossibility of calculating surface concentrations according to the MRR-2017 method , designed to calculate the dispersion of gases from sources with stationary parameters of pollutant emissions. Sources with variable emission parameters are one of the largest groups of sources in the gas transmission industry. The technique takes into account the change in source parameters, such as pressure, mass flow, temperature, linear velocity of the gas. At the end of the article, an example of calculating surface methane concentrations for a certain stability class and a set of meteorological data is given. The dependences of surface concentrations of methane on time for points located at different distances from the emission source are given. The results with the maximum concentration and the conditions under which these values are achieved are presented.
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