Abstract: The possibility of fuel vapor condensation in shock waves in fuel-rich (cyclohexane-oxygen) gaseous mixtures and explosion safety aspects of this effect are discussed. It is shown, that condensation process can essentially change the chemical composition of the gas. For example, the molar fraction of the oxidizer can increase in a few times. As a result, mixtures in which the initial concentration of fuel vapor exceeds the Upper Flammability Limit can, nevertheless, explode, if condensation shifts the composition of the mixture into the ignition region. The rate of the condensation process is estimated. This process can be fast enough to significantly change the chemical composition of the gas and shift it into the flammable range during the compression phase of blast waves, generated by explosions of fuel-vapor clouds or rapture of pressurized chemical reactors, with characteristic size of a few meters. It is shown that the presence of chemically inert microparticles in the gas mixtures under consideration increases the degree of supercooling and the mass of fuel vapors that have passed into the liquid and reduces the characteristic condensation time in comparison with the gas mixture without microparticles. The fuel vapor condensation should be taken into account in estimation the explosion hazard of chemical reactors, industrial and civil constructions, which may contain fuel-rich gaseous mixtures of heavy hydrocarbons with air.

Cite: Fomin P.A.
Shock wave induced condensation in fuel-rich gaseous and gas-particles mixtures
AIP Conference Proceedings. 2018. V.1939. 020011 :1-6. DOI: 10.1063/1.5027323 Scopus РИНЦ OpenAlex

Dates:

Accepted:

Dec 1, 2023

Identifiers:

Scopus:	2-s2.0-85045154205
Elibrary:	35508901
OpenAlex:	W2794710920

Citing: Пока нет цитирований

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