Behavior of Ignition and Combustion for Asphalt/Water-Emulsified Fuels

Abstract

The ignition and combustion behavior of single droplets of asphalt/water emulsified fuel (As/W) were observed in an electric furnace in order to obtain fundamental data for practical use. The ignition delay and the burnout time of single droplets of asphalt. C-heavy oil and As/W emulsions were investigated under specified furnace temperatures. Each fuel showed peculiar ignition and combustion behavior, and especially As/W emulsified fuel-J (As/W J) had a very strong microexplosion. The values of the ignition delay and the burnout time of As/W emulsified fuels were smaller than those of asphalt and C heavy oil. The reason can be explained by the occurrence of the microexplosion phenomena. Thus, the mechanism was discussed for some factors related to the phenomena.