Ignition of Different Marks of Coal by Laser Pulses in the Free-Running Mod Научная публикация
Журнал |
Chemistry for Sustainable Development
ISSN: 1817-1818 |
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Вых. Данные | Год: 2019, Том: 27, Номер: 6, Страницы: 549-555 Страниц : 7 DOI: 10.15372/CSD2019172 | ||||
Ключевые слова | laser ignition, combustion, coal dust | ||||
Авторы |
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Организации |
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Реферат:
Laser ignition (λ = 1064 nm, τi = 120 ms) of the coal samples of different marks from the Kuznetsk coal basin was studied. Three consecutive stages of ignition were detected for all marks of coal. These stages are characterized by the threshold radiation energy densities Hcr(1), Hcr(2), Hcr(3) which are characteristic for each coal marks. It was established that the first stage involves surface heating and ignition of micro protrusions on coal particles. The duration of this stage does not exceed the time of the laser pulse. At the second stage, volatile matter are observed to evolve and ignite. The duration of combustion depends on the density of radiation energy. Ignition of the nonvolatile residue occurs at the third stage, upon reaching Hcr(3); burning time is 40-150 ms. It was demonstrated that the threshold value at the first stage varies only slightly for all coal marks. For bituminous coal, the second threshold decreases with an increase in coalification degree, while the third threshold increases. The second and the third thresholds for lignite are comparable with the values of Hcr(2) and Hcr(3) for low metamorphic bituminous coals. Experimental results allow us to conclude that ignition occurs at the first and the third stages according to the heterogeneous mechanism, while at the second stage it occurs according to a homogeneous mechanism.
Библиографическая ссылка:
Aduev B.P.
, Kraft Y.V.
, Nurmukhametov D.R.
, Ismagilov Z.R.
Ignition of Different Marks of Coal by Laser Pulses in the Free-Running Mod
Chemistry for Sustainable Development. 2019. V.27. N6. P.549-555. DOI: 10.15372/CSD2019172 WOS РИНЦ
Ignition of Different Marks of Coal by Laser Pulses in the Free-Running Mod
Chemistry for Sustainable Development. 2019. V.27. N6. P.549-555. DOI: 10.15372/CSD2019172 WOS РИНЦ
Оригинальная:
Адуев Б.П.
, Крафт Я.В.
, Нурмухаметов Д.Р.
, Исмагилов З.Р.
Зажигание углей различных стадий метаморфизма лазерными импульсами в режиме свободной генерации
Химия в интересах устойчивого развития. 2019. Т.27. №6. С.549-555. DOI: 10.15372/khur2019172 RSCI РИНЦ
Зажигание углей различных стадий метаморфизма лазерными импульсами в режиме свободной генерации
Химия в интересах устойчивого развития. 2019. Т.27. №6. С.549-555. DOI: 10.15372/khur2019172 RSCI РИНЦ
Идентификаторы БД:
Web of science | WOS:000571381000001 |
РИНЦ | 44607638 |
OpenAlex | W4251386057 |