Abstract
This paper presents a theoretical study of the thermal preparation and ignition of a coal–water fuel droplet under intense radiative-convective heating with diffusion of gaseous pyrolysis products of the solid fuel into the ambient gaseous medium. It has been found that gaseous pyrolysis products are ignited at a distance from the heating surface approximately equal to the radius of the droplet, after which the coke of the main fuel layer is ignited. The time between the ignition of volatiles and the coke residue is less than 0.5 s. Comparison of the ignition delays obtained by mathematical modeling and experimentally has shown satisfactory agreement between theoretical and experimental values.
| Original language | English |
|---|---|
| Pages (from-to) | 654-663 |
| Number of pages | 10 |
| Journal | Combustion, Explosion and Shock Waves |
| Volume | 54 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 1 Nov 2018 |
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Keywords
- coal–water fuel
- coke ignition
- diffusion of pyrolysis products
- ignition of volatile
ASJC Scopus subject areas
- Chemistry(all)
- Chemical Engineering(all)
- Fuel Technology
- Energy Engineering and Power Technology
- Physics and Astronomy(all)
Cite this
Effect of Diffusion of Coal Pyrolysis Products on the Ignition Characteristics and Conditions of Coal–Water Fuel Droplets. / Kuznetsov, G. V.; Salomatov, V. V.; Syrodoi, S. V.
In: Combustion, Explosion and Shock Waves, Vol. 54, No. 6, 01.11.2018, p. 654-663.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effect of Diffusion of Coal Pyrolysis Products on the Ignition Characteristics and Conditions of Coal–Water Fuel Droplets
AU - Kuznetsov, G. V.
AU - Salomatov, V. V.
AU - Syrodoi, S. V.
PY - 2018/11/1
Y1 - 2018/11/1
N2 - This paper presents a theoretical study of the thermal preparation and ignition of a coal–water fuel droplet under intense radiative-convective heating with diffusion of gaseous pyrolysis products of the solid fuel into the ambient gaseous medium. It has been found that gaseous pyrolysis products are ignited at a distance from the heating surface approximately equal to the radius of the droplet, after which the coke of the main fuel layer is ignited. The time between the ignition of volatiles and the coke residue is less than 0.5 s. Comparison of the ignition delays obtained by mathematical modeling and experimentally has shown satisfactory agreement between theoretical and experimental values.
AB - This paper presents a theoretical study of the thermal preparation and ignition of a coal–water fuel droplet under intense radiative-convective heating with diffusion of gaseous pyrolysis products of the solid fuel into the ambient gaseous medium. It has been found that gaseous pyrolysis products are ignited at a distance from the heating surface approximately equal to the radius of the droplet, after which the coke of the main fuel layer is ignited. The time between the ignition of volatiles and the coke residue is less than 0.5 s. Comparison of the ignition delays obtained by mathematical modeling and experimentally has shown satisfactory agreement between theoretical and experimental values.
KW - coal–water fuel
KW - coke ignition
KW - diffusion of pyrolysis products
KW - ignition of volatile
UR - http://www.scopus.com/inward/record.url?scp=85057734257&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85057734257&partnerID=8YFLogxK
U2 - 10.1134/S0010508218060047
DO - 10.1134/S0010508218060047
M3 - Article
AN - SCOPUS:85057734257
VL - 54
SP - 654
EP - 663
JO - Combustion, Explosion and Shock Waves
JF - Combustion, Explosion and Shock Waves
SN - 0010-5082
IS - 6
ER -