Single droplet combustion of coal-oil/methanol/water mixtures

✍ Scribed by Masahiro Saito; Masayoshi Sadakata; Takeshi Sakai

• Publisher: Elsevier Science
• Year: 1983
• Tongue: English
• Weight: 685 KB
• Volume: 62
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/0016-2361(83)90118-7

✦ Synopsis

Single droplet combustion of coal-oil/methanol/water mixtures was investigated. A microexplosion occured during the gas-phase combustion period of emulsified fuels and caused secondary atomization of fuel droplets. The microexplosion during the combustion of a coal-oil/methanol/water mixture was the most violent of all the sample fuels and its apparent overall burning rate coefficient was maintained at the highest value over the range of ambient air temperatures used, 850-l 000°C. It was concluded that an appropriate addition of water and/or methanol could improve the combustion characteristics of coal/oil mixtures. The apparent overall burning rate coefficient of a methanol/coal/oil mixture was 2-3 times higher than that of a coal/oil mixture. However, that of a water/coal/oil mixture was 2-10 times higher than that of a coal/oil mixture.