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JOURNALS // Teplofizika vysokikh temperatur // Archive

TVT, 2022 Volume 60, Issue 6, Pages 897–905 (Mi tvt11548)

This article is cited in 2 papers

Heat and Mass Transfer and Physical Gasdynamics

On the effect of a small acetone impurity on the thermal self-decomposition of acetylene

E. V. Gurentsov, A. V. Drakon, A.V. Eremin, E. Yu. Mikheeva

Joint Institute for High Temperatures, Russian Academy of Sciences, Moscow

Abstract: In this article, we experimentally studied the effect of acetone impurities on the induction time and soot yield during the self-decomposition of acetylene behind shock waves. The results of the experiments showed that variation of the acetone impurity in the range $0.5$$3.0\%$, characteristic of technical acetylene, does not have a significant effect on the pyrolysis kinetics and soot yield, while the addition of acetone to acetylene in a ratio $1 : 3$ increases it only slightly. At the same time, the results of modeling using modern kinetic mechanisms predict in the presence of acetone additives a significant acceleration of pyrolysis and increase in the yield of polyaromatic compounds and soot particles in acetylene. This result indicates the need for further improvement of kinetic schemes for a successful description of the kinetics of self-decomposition of acetylene and soot formation. The results should be taken into account when developing promising energy cycles based on the energy of acetylene self-decomposition, as well as when analyzing the risks of spontaneous explosions in technological processes associated with its use.

UDC: 544.43

Received: 17.03.2021
Revised: 12.03.2022
Accepted: 07.06.2022

DOI: 10.31857/S0040364422040147


 English version:
High Temperature, 2022, 60:6, 830–837

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© Steklov Math. Inst. of RAS, 2025