Influence of inorganic salt on the characteristics of oxidation, ignition and combustion of bituminous coal

K. B. Larionov, I. V. Mishakov, K. V. Slyusarsky

Research output: Contribution to journalConference article

Abstract

The processes of oxidation, ignition and combustion of bituminous coal containing 5 wt.% of activating agent (Cu(NO3)2) was studied. The experiment was performed using high-speed video recording of the combustion process of the researched coals in combustion chamber at a temperature of 700°C in the air at atmospheric pressure. Analytical assessment of the characteristics of ignition and combustion processes of the researched coals was carried out based on the obtained results. It was established that addition of Cu(NO3)2 promoter leads to a significant decrease of the time characterizing the delay in the beginning of coal ignition (in 2 times). Effect of the activating additive was also expressed in formation of flame during coal combustion at the stage of volatile substances separation with periodic formation of characteristic flashes formed as a result of decomposition of copper nitrate in the pores of the carbon matrix. This contributed to intensification of the release process of relatively large volume of combustible gases. The obtained results were compared with previously obtained data of the oxidation process of these coals with activating additives of copper salts by thermogravimetric analysis.

Original languageEnglish
Article number012058
JournalJournal of Physics: Conference Series
Volume1359
Issue number1
DOIs
Publication statusPublished - 21 Nov 2019
Event4th All-Russian Scientific Conference Thermophysics and Physical Hydrodynamics with the School for Young Scientists, TPH 2019 - Yalta, Crimea, Ukraine
Duration: 15 Sep 201922 Sep 2019

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coal
ignition
salts
oxidation
copper
combustion chambers
flash
nitrates
flames
atmospheric pressure
recording
high speed
porosity
decomposition
carbon
air
matrices
gases
temperature

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Influence of inorganic salt on the characteristics of oxidation, ignition and combustion of bituminous coal. / Larionov, K. B.; Mishakov, I. V.; Slyusarsky, K. V.

In: Journal of Physics: Conference Series, Vol. 1359, No. 1, 012058, 21.11.2019.

Research output: Contribution to journalConference article

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AB - The processes of oxidation, ignition and combustion of bituminous coal containing 5 wt.% of activating agent (Cu(NO3)2) was studied. The experiment was performed using high-speed video recording of the combustion process of the researched coals in combustion chamber at a temperature of 700°C in the air at atmospheric pressure. Analytical assessment of the characteristics of ignition and combustion processes of the researched coals was carried out based on the obtained results. It was established that addition of Cu(NO3)2 promoter leads to a significant decrease of the time characterizing the delay in the beginning of coal ignition (in 2 times). Effect of the activating additive was also expressed in formation of flame during coal combustion at the stage of volatile substances separation with periodic formation of characteristic flashes formed as a result of decomposition of copper nitrate in the pores of the carbon matrix. This contributed to intensification of the release process of relatively large volume of combustible gases. The obtained results were compared with previously obtained data of the oxidation process of these coals with activating additives of copper salts by thermogravimetric analysis.

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