Ignition of Low-Metamorphized Coal with Continuous Lasers at Wavelengths 450 nm and 808 nm Full article
Journal |
Eurasian Chemico-Technological Journal
ISSN: 1562-3920 |
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Output data | Year: 2022, Volume: 24, Number: 2, Pages: 93-101 Pages count : 9 DOI: 10.18321/ectj1321 | ||||
Tags | Coal; Combustion; Emission spectra; Laser ignition; Pulverized coal fuel | ||||
Authors |
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Affiliations |
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Funding (1)
1 | Russian Science Foundation | 22-13-20041 (122053100142-1) |
Abstract:
The paper presents the results of a comparative investigation into the kinetic and energy characteristics of the ignition of microparticles of low-metamorphized coal ranks (lignite coal and high volatile C bituminous coal) under the impact of laser radiation at the wavelengths λ = 450 nm and λ = 808 nm with an exposure time of 1 sec. Coal ignition is carried out only during irradiation. There is no transition to stationary combustion. The ignition delay time decreases monotonically with increasing radiation power density. It is established that the energy costs of ignition of the studied coal ranks may be made more economical by using laser radiation with a wavelength of λ = 450 nm. It is concluded from the results of measuring the energy characteristics of coal ignition that the absorption of radiation has a quantum nature. Two components contribute to the coal particles emission spectra measured at the initial stage of ignition: CO (CO2 *) flame and thermal glow associated with emitted carbon particles heated to T>2000 K for both coal ranks. At subsequent stages, only the glow of heated carbon particles with the thermal spectrum at T~2000 K is observed in the spectra. © 2022 The Author(s).
Cite:
Aduev B.P.
, Belokurov G.M.
, Liskov I.Y.
, Nurmukhametov D.R.
, Ismagilov Z.R.
Ignition of Low-Metamorphized Coal with Continuous Lasers at Wavelengths 450 nm and 808 nm
Eurasian Chemico-Technological Journal. 2022. V.24. N2. P.93-101. DOI: 10.18321/ectj1321 Scopus РИНЦ
Ignition of Low-Metamorphized Coal with Continuous Lasers at Wavelengths 450 nm and 808 nm
Eurasian Chemico-Technological Journal. 2022. V.24. N2. P.93-101. DOI: 10.18321/ectj1321 Scopus РИНЦ
Dates:
Submitted: | Mar 10, 2022 |
Accepted: | Jun 5, 2022 |
Published print: | Jul 25, 2022 |
Identifiers:
Scopus | 2-s2.0-85138712330 |
Elibrary | 50024304 |
Chemical Abstracts | 2023:2151012 CAplus |
OpenAlex | W4312575454 |