Combustion of Emulsions in Small Pool Burners

概要

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An experimental investigation on the combustion of emulsions in small pool burners has been carried out. The base fuel used was kerosene. The water content varied from zero to 30% by volume and by volume surfactant 2% was used. Stainless steel tubes of diameterφ 9.5, φ13 and φ16 were used for the burner. Coiled copper tubes (φ2) were attached to the top of each burner, so to control the burner wall temperature by cooling water which passes through the copper tubes. In order to make emulsions burn quasi-steadily and form a laminar diffusion flame, accompanied with evaporating of water in the emulsion, the burner wall temperature was maintained from 115°C to 120°C. Results show that the yellow point (fuel flow rate of onset of carbon luminosity) and sooting point (fuel flow rate of soot just formed) increase. The maximum burning point (fuel flow rate at beginning of fuel overflow from burner rim) decreases with the increase of the water content. The Booting rate (mass of collected soot/mass of burned fuel) decreased with the increase in the water content. The corrected sooting rate (mass of collected soot/mass of burned kerosene) of the emulsions were lower than that of the neat kerosene.