Effect of the high-power electromagnetic pulses on the reactivity of the coal-water slurry in hot environment

doi:10.1016/j.cjche.2020.07.060

Chinese Journal of Chemical Engineering ›› 2020, Vol. 28 ›› Issue (12): 3145-3151.DOI: 10.1016/j.cjche.2020.07.060

• Materials and Product Engineering • Previous Articles Next Articles

Effect of the high-power electromagnetic pulses on the reactivity of the coal-water slurry in hot environment

M. V. Belonogov, R. I. Taburchinov, R. I. Egorov

National Research Tomsk Polytechnic University, Tomsk, Russian Federation

Received:2020-02-22 Revised:2020-05-25 Online:2021-01-11 Published:2020-12-28
Contact: R. I. Egorov
Supported by:
This research was performed within the framework of the Russian State Assignment "Science" project FSWW-2020-0022. Investigations of the ignition techniques of waste-derived fuels were partially supported by the Tomsk Polytechnic University Competitiveness Enhancement Program (project VIU-ISHFVP-197/2019).

Effect of the high-power electromagnetic pulses on the reactivity of the coal-water slurry in hot environment

M. V. Belonogov, R. I. Taburchinov, R. I. Egorov

National Research Tomsk Polytechnic University, Tomsk, Russian Federation

通讯作者: R. I. Egorov
基金资助:
This research was performed within the framework of the Russian State Assignment "Science" project FSWW-2020-0022. Investigations of the ignition techniques of waste-derived fuels were partially supported by the Tomsk Polytechnic University Competitiveness Enhancement Program (project VIU-ISHFVP-197/2019).

Abstract

Abstract: An effect of the high-power electromagnetic pulses onto the droplet of coal-water slurry inside the furnace was investigated. In contrary to the previously investigated laser-induced fuel atomization that occurs at the room temperature, the pre-heated (to 400 K) slurry becomes dry enough to prevent the explosion-like steam formation. Thus, fuel does not atomize and the ignition does not accelerate. Furthermore, the absorption of several laser pulses leads to evident sintering of irradiated surface with following increase of the ignition delay time for up to 24%. Variation of the pulse energy in range 48-118 mJ (corresponding intensity up to 2.4 J·cm^-2) leads to certain variation of the increase of ignition delay. The strong pulsed overheating of the coal water slurry which does not initiate the fine atomization of the fuel generally makes its ignition longer.

Key words: Waste-derived fuels, Coal-water slurry, Auto-ignition, Ignition delay time, High-power laser pulse

摘要： An effect of the high-power electromagnetic pulses onto the droplet of coal-water slurry inside the furnace was investigated. In contrary to the previously investigated laser-induced fuel atomization that occurs at the room temperature, the pre-heated (to 400 K) slurry becomes dry enough to prevent the explosion-like steam formation. Thus, fuel does not atomize and the ignition does not accelerate. Furthermore, the absorption of several laser pulses leads to evident sintering of irradiated surface with following increase of the ignition delay time for up to 24%. Variation of the pulse energy in range 48-118 mJ (corresponding intensity up to 2.4 J·cm^-2) leads to certain variation of the increase of ignition delay. The strong pulsed overheating of the coal water slurry which does not initiate the fine atomization of the fuel generally makes its ignition longer.

关键词: Waste-derived fuels, Coal-water slurry, Auto-ignition, Ignition delay time, High-power laser pulse

M. V. Belonogov, R. I. Taburchinov, R. I. Egorov. Effect of the high-power electromagnetic pulses on the reactivity of the coal-water slurry in hot environment[J]. Chinese Journal of Chemical Engineering, 2020, 28(12): 3145-3151.

M. V. Belonogov, R. I. Taburchinov, R. I. Egorov. Effect of the high-power electromagnetic pulses on the reactivity of the coal-water slurry in hot environment[J]. 中国化学工程学报, 2020, 28(12): 3145-3151.

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Effect of the high-power electromagnetic pulses on the reactivity of the coal-water slurry in hot environment

Effect of the high-power electromagnetic pulses on the reactivity of the coal-water slurry in hot environment

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