Atomization and Sprays Journal of the International Institutes for Liquid Atomization and Spray Systems

ISSN for PRINT: 1045-5110

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2004, Volume14

Issue 1

99 pages

DOI: 10.1615/AtomizSpr.v14.i1

Issue price - $85.00

Kyoji Kimoto
Department of Mechanical Engineering, Osaka Prefectural College of Technology, Osaka, Japan

Kunihiko Namba
Department of Mechanical Engineering, Osaka Prefectural College of Technology, Osaka, Japan

Residual water mixture (RWM) is a fuel of an "oil-in-water" emulsion with a water content of about 30% (by weight) to the final residual oils such as asphalt and pitch after distilling crude oils. The fuel shows two orders of magnitude lower viscosity than the neat residual oils because of water content included in the emulsion, so it can be used in a pump to supply fuel to a burner. In this article, the atomization characteristics of the sprays of a twin-fluid atomizer and, in particular, NOx emission characteristics in the flue gases in a small furnace, are discussed for asphalt/water (As/W) emulsions, one of the RWM fuels, in combustion experiments. It is concluded that As/W fuels can be expected to be used as substitute fuels for C heavy oil because of improved combustive quality of residual oils and nearly equivalent NOx emissions to C heavy oil. The result is based on dispersed flames induced by the secondary atomization due to the microexplosion effect of the fuel droplets.

DOI: 10.1615/AtomizSpr.v14.i1.10 Download article, 14 pages

Article price - $35.00

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