Effect of Diffusion of Coal Pyrolysis Products on the Ignition Characteristics and Conditions of Coal–Water Fuel Droplets

G. V. Kuznetsov, V. V. Salomatov, S. V. Syrodoi

Результат исследований: Материалы для журналаСтатьярецензирование

Аннотация

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.

Язык оригиналаАнглийский
Страницы (с-по)654-663
Число страниц10
ЖурналCombustion, Explosion and Shock Waves
Том54
Номер выпуска6
DOI
СостояниеОпубликовано - 1 ноя 2018

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Fuel Technology
  • Energy Engineering and Power Technology
  • Physics and Astronomy(all)

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