On the Thermal Explosion Theory of a Heterogeneous Liquid–Liquid System
- Authors: Samoilenko N.G.1, Korsunskiy B.L.1,2,3, Shatunova E.N.1, Bostandgiyan V.A.1, Kustova L.V.1
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Affiliations:
- Institute of Problems of Chemical Physics
- Semenov Institute of Chemical Physics
- National Research Nuclear University (MEPhI)
- Issue: Vol 12, No 5 (2018)
- Pages: 875-882
- Section: Combustion, Explosion, and Shock Waves
- URL: https://journals.rcsi.science/1990-7931/article/view/201090
- DOI: https://doi.org/10.1134/S1990793118050093
- ID: 201090
Cite item
Abstract
In this paper, the regularities of a thermal explosion of a heterogeneous system consisting of two immiscible liquids have been studied. Each phase is a solution of A and B reagents. Reagent B is extracted into a solution of reagent A, where the bimolecular exothermic reaction A + B → Products takes place. It has been shown that an exothermic reaction (combustion regime) continues to proceed in the system at high mass-exchange rates between phases after a thermal explosion. As a result, the maximal temperature may significantly exceed the temperature of the thermal explosion. The critical value of the Semenov parameter decreases with an increase in the mass-exchange rate between phases. In the limited range of values of the distribution coefficient of reagent B between phases, the increase of this coefficient is also accompanied by a decrease in the critical value of the Semenov parameter. The concentration of reagent B in the initial phase decreases monotonically due to its extraction into another phase. However, the equilibrium of the extraction of reagent B can shift, due to the temperature dependence of the distribution coefficient during the reaction. Thus, the time dependence of the concentration of reagent B on may be more complex and can pass through a minimum.
About the authors
N. G. Samoilenko
Institute of Problems of Chemical Physics
Email: kors@polymer.chph.ras.ru
Russian Federation, Chernogolovka, 142432
B. L. Korsunskiy
Institute of Problems of Chemical Physics; Semenov Institute of Chemical Physics; National Research Nuclear University (MEPhI)
Author for correspondence.
Email: kors@polymer.chph.ras.ru
Russian Federation, Chernogolovka, 142432; Moscow, 119334; Moscow, 115409
E. N. Shatunova
Institute of Problems of Chemical Physics
Email: kors@polymer.chph.ras.ru
Russian Federation, Chernogolovka, 142432
V. A. Bostandgiyan
Institute of Problems of Chemical Physics
Email: kors@polymer.chph.ras.ru
Russian Federation, Chernogolovka, 142432
L. V. Kustova
Institute of Problems of Chemical Physics
Email: kors@polymer.chph.ras.ru
Russian Federation, Chernogolovka, 142432