Abstract
This paper describes the results on methane oxidation in the plasma torch of low-current plasmatron at typical air expenditure of 0.1-0.55 g/s and at a flow velocity in a longitudinal direction up to 22 m/s. The discharge in a vortex gas flow burns in a glow regime with the spontaneous transitions from glow to spark. Due to special design of the plasmatron nozzle (with a ring groove at the inner surface of the nozzle), an efficient interaction of the gas flow with plasma column and the reproducible data on chemical gas composition in a combustion chamber are provided. An average discharge current in the plasmatron was varied from 0.05 to 0.2 A, which corresponded to an average power dissipated in the discharge from 60 to 150 W. A heat power due to fuel burning in the plasma torch was at a level of 1 kW. The data on chemical gas composition in the combustion chamber in a wide range of air excess coefficient a had been obtained. For the lean air-to-fuel compositions (that is for α 1), the lower flammable limit was of α ≈ 3. In a regime of syngas generation, i.e., for the rich air-fuel mixtures, the upper flammable limit was of about α ≈ 0.55. It is demonstrated that both the low and the upper flammable limits depend on the discharge current.
| Original language | English |
|---|---|
| Article number | 6811167 |
| Pages (from-to) | 1615-1622 |
| Number of pages | 8 |
| Journal | IEEE Transactions on Plasma Science |
| Volume | 42 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 1 Jan 2014 |
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Keywords
- Glow-to-spark transition
- hydrocarbon oxidation
- plasma torches
- plasma-assisted combustion.
ASJC Scopus subject areas
- Nuclear and High Energy Physics
- Condensed Matter Physics
Cite this
Methane oxidation in a low-current nonsteady-state plasmatron. / Korolev, Yury D.; Frants, Oleg B.; Landl, Nikolay V.; Geyman, Vladimir G.; Kasyanov, Vladimir S.
In: IEEE Transactions on Plasma Science, Vol. 42, No. 6, 6811167, 01.01.2014, p. 1615-1622.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Methane oxidation in a low-current nonsteady-state plasmatron
AU - Korolev, Yury D.
AU - Frants, Oleg B.
AU - Landl, Nikolay V.
AU - Geyman, Vladimir G.
AU - Kasyanov, Vladimir S.
PY - 2014/1/1
Y1 - 2014/1/1
N2 - This paper describes the results on methane oxidation in the plasma torch of low-current plasmatron at typical air expenditure of 0.1-0.55 g/s and at a flow velocity in a longitudinal direction up to 22 m/s. The discharge in a vortex gas flow burns in a glow regime with the spontaneous transitions from glow to spark. Due to special design of the plasmatron nozzle (with a ring groove at the inner surface of the nozzle), an efficient interaction of the gas flow with plasma column and the reproducible data on chemical gas composition in a combustion chamber are provided. An average discharge current in the plasmatron was varied from 0.05 to 0.2 A, which corresponded to an average power dissipated in the discharge from 60 to 150 W. A heat power due to fuel burning in the plasma torch was at a level of 1 kW. The data on chemical gas composition in the combustion chamber in a wide range of air excess coefficient a had been obtained. For the lean air-to-fuel compositions (that is for α 1), the lower flammable limit was of α ≈ 3. In a regime of syngas generation, i.e., for the rich air-fuel mixtures, the upper flammable limit was of about α ≈ 0.55. It is demonstrated that both the low and the upper flammable limits depend on the discharge current.
AB - This paper describes the results on methane oxidation in the plasma torch of low-current plasmatron at typical air expenditure of 0.1-0.55 g/s and at a flow velocity in a longitudinal direction up to 22 m/s. The discharge in a vortex gas flow burns in a glow regime with the spontaneous transitions from glow to spark. Due to special design of the plasmatron nozzle (with a ring groove at the inner surface of the nozzle), an efficient interaction of the gas flow with plasma column and the reproducible data on chemical gas composition in a combustion chamber are provided. An average discharge current in the plasmatron was varied from 0.05 to 0.2 A, which corresponded to an average power dissipated in the discharge from 60 to 150 W. A heat power due to fuel burning in the plasma torch was at a level of 1 kW. The data on chemical gas composition in the combustion chamber in a wide range of air excess coefficient a had been obtained. For the lean air-to-fuel compositions (that is for α 1), the lower flammable limit was of α ≈ 3. In a regime of syngas generation, i.e., for the rich air-fuel mixtures, the upper flammable limit was of about α ≈ 0.55. It is demonstrated that both the low and the upper flammable limits depend on the discharge current.
KW - Glow-to-spark transition
KW - hydrocarbon oxidation
KW - plasma torches
KW - plasma-assisted combustion.
UR - http://www.scopus.com/inward/record.url?scp=84902359008&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84902359008&partnerID=8YFLogxK
U2 - 10.1109/TPS.2014.2320321
DO - 10.1109/TPS.2014.2320321
M3 - Article
VL - 42
SP - 1615
EP - 1622
JO - IEEE Transactions on Plasma Science
JF - IEEE Transactions on Plasma Science
SN - 0093-3813
IS - 6
M1 - 6811167
ER -