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Research Article

Influence of chemically active additives on kinetics of acetylene self-decomposition and following soot formation

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Pages 2774-2800 | Received 01 Sep 2021, Accepted 08 Feb 2022, Published online: 17 Feb 2022
 

ABSTRACT

In this work, the kinetics of pyrolysis and subsequent soot yield in undiluted mixtures of acetylene with chemically active additives, namely acetone, hydrogen, oxygen, methane and propane–butane mixture, were investigated numerically over a wide range of pressures and temperatures using the modern kinetics mechanisms. It was shown that with different amounts of additives and under different temperature/pressure conditions, both acceleration and deceleration of acetylene pyrolysis was possible. The determining factors were either additional thermal effects or new reaction channels arising in the presence of certain additives. The greatest inhibitory effect was observed with the addition of alkanes, while the oxygen additives caused significant acceleration of pyrolysis due to exothermic oxidative reactions. The results of the calculations qualitatively agree with available experimental data in the literature obtained from different reactors.

Disclosure statement

No potential conflict of interest was reported by the author(s).

Additional information

Funding

The study was supported by the RSF grant 21-19-00390.

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