Coke Formation in the Combustion of Isolated Heavy Oil Droplets

Nicholas J. Marrone, Ian M. Kennedy, Frederick L. Dryer

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

The combustion and coking of isolated, free and suspended droplets of a residual oil have been studied. The combustion history of the free and suspended droplets was found to be characterized by qualitatively similar phenomena. The coke particle was seen to form within the final 9 percent of the droplet burning period and the mass of the coke particle was about 3 percent of the mass of the initial residual oil droplet. Changing the temperature history of a droplet by varying the initial droplet size between 260 and 570 microns or by diluting the residual oil with a more volatile No. 2 fuel oil did not affect the mass fraction of the residual oil in the initial droplet which was converted to coke. The contribution to the coke particle from both the asphaltene and maltenc (residual oil from which the asphaltenes have been removed) components of the oil was found to be significant, and therefore fuel asphaltene content alone will not provide a satisfactory basis for determining the relative coking tendency of different oils. The results indicate that in the combustion of heavy fuel oils coke particles will be formed and that particulate emissions may be best reduced through enahanced particle burnout (through techniques such as improved atomization and oil-water emulsions), and not through an attempted reduction in the formation of coke. G.

Original languageEnglish (US)
Pages (from-to)149-170
Number of pages22
JournalCombustion Science and Technology
Volume36
Issue number3-4
DOIs
StatePublished - Mar 1 1984
Externally publishedYes

Fingerprint

coke
Coke
Oils
Crude oil
oils
Fuel Oils
fuel oils
Coking
Fuel oils
histories
asphaltenes
burnout
Residual fuels
Particulate emissions
Asphaltenes
atomizing
Atomization
Emulsions
particulates
emulsions

ASJC Scopus subject areas

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

Cite this

Coke Formation in the Combustion of Isolated Heavy Oil Droplets. / Marrone, Nicholas J.; Kennedy, Ian M.; Dryer, Frederick L.

In: Combustion Science and Technology, Vol. 36, No. 3-4, 01.03.1984, p. 149-170.

Research output: Contribution to journalArticle

Marrone, Nicholas J. ; Kennedy, Ian M. ; Dryer, Frederick L. / Coke Formation in the Combustion of Isolated Heavy Oil Droplets. In: Combustion Science and Technology. 1984 ; Vol. 36, No. 3-4. pp. 149-170.
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