Email this article Soot formation during pyrolysis of ethylene with additions of methanol and butanol
- Authors: Eremin A.V.1, Korshunova M.R.1, Mikheyeva E.Y.1
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Affiliations:
- Joint Institute for High Temperatures of the Russian Academy of Sciences
- Issue: Vol 15, No 1 (2022)
- Pages: 22-29
- Section: Articles
- URL: https://journal-vniispk.ru/2305-9117/article/view/288289
- DOI: https://doi.org/10.30826/CE22150103
- ID: 288289
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Abstract
Soot formation during pyrolysis of ethylene with the addition of alcohols (methanol and butanol) behind shock waves in the temperature range 2009–2524 K and pressure 2.56–3.58 bar has been investigated experimentally. Temperature dependences of optical density were measured by laser extinction at a wavelength of 633 nm and the size of carbon nanoparticles was measured by laser-induced incandescence. Temperature dependences of the induction times for the condensed phase appearance were also obtained. It has been shown that addition of methanol and butanol accelerates and increases the soot yield. The observed promoting effect on soot formation is stronger with the addition of butanol than methanol. The kinetic reasons for the influence of methanol and butanol on ethylene pyrolysis are discussed.
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About the authors
Alexander V. Eremin
Joint Institute for High Temperatures of the Russian Academy of Sciences
Author for correspondence.
Email: eremin@jiht.ru
Doctor of Science in physics and mathematics, professor, head of laboratory
Russian Federation, 13-2 Izhorskaya Str., Moscow 125412Mayya R. Korshunova
Joint Institute for High Temperatures of the Russian Academy of Sciences
Email: mayya_korshunova_95@mail.ru
junior research scientist
Russian Federation, 13-2 Izhorskaya Str., Moscow 125412Ekaterina Yu. Mikheyeva
Joint Institute for High Temperatures of the Russian Academy of Sciences
Email: ekaterina.mikheyeva@gmail.com
Candidate of Science in physics and mathematics, senior research scientist
Russian Federation, 13-2 Izhorskaya Str., Moscow 125412References
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Supplementary files
Supplementary Files
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1.
JATS XML
2.
Figure 1 Time histories of extinction signal for 5% C2H4 + 1% C4H9OH + 94% Ar mixture, T5 = 2146 K, and P5 = 3.11 bar and the procedure of determining the induction time
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3.
Figure 2 Temperature dependences of the optical density measured at reaction times 0.75 (a) and 1.5 ms (b) in ethylene and ethylene–methanol mixtures: 1 — 5% C2H4 in Ar; 2 — 5% C2H4 + 0.5% CH3OH in Ar; and 3 — 5% C2H4 + 1% CH3OH in Ar
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4.
Figure 3 Temperature dependences of the optical density measured at reaction times 0.75 (a) and 1.5 ms (b) in ethylene and ethylene–butanol mixtures: 1 — 5% C2H4 in Ar; 2 — 5% C2H4 + 0.5% C4H9OH in Ar; and 3 — 5% C2H4 + 1% C4H9OH in Ar
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5.
Figure 4 Temperature dependences of soot nanoparticle sizes measured at reaction time 1.5 ms in ethylene, ethylene–methanol (a), and ethylene–butanol (b) mixtures: 1 — PEM 5% C2H4 in Ar; 2 — 5% C2H4 in Ar; 3 — 5% C2H4+0.5% CH3OH in Ar; 4 — 5% C2H4 + 1% CH3OH in Ar; 5 — 5% C2H4 + 0.5% C4H9OH in Ar; and 6 — 5% C2H4 + 1% C4H9OH in Ar
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6.
Figure 5 Temperature dependences of induction times of condensed phase appearance in ethylene, ethylene–methanol (a), and etylene–butanol (b) mixtures. Signs — experimental results and curves — approximations: 1 — 5% C2H4 in Ar; 2 — 5% C2H4 + 0.5% CH3OH in Ar; 3 — 5% C2H4 + 1% CH3OH in Ar; 4 — 5% C2H4 + 0.5% C4H9OH in Ar; and 5 — 5% C2H4 + 1% C4H9OH in Ar
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