Soot formation by combustion of a fuel droplet in high pressure gaseous environments

✍ Scribed by T. Kadota; H. Hiroyasu; A. Farazandehmehr

• Publisher: Elsevier Science
• Year: 1977
• Tongue: English
• Weight: 647 KB
• Volume: 29
• Category: Article
• ISSN: 0010-2180
• DOI: 10.1016/0010-2180(77)90094-3

✦ Synopsis

Experimental study was made of the soot formation by combustion of a hydrocarbon droplet. Droplets made at the tip of a fine quartz thread were ignited with an electric ignitor mounted just below the droplet. Formed soot was collected on a glass fiber filter paper. By weighing the g~ass fiber filter before and after sampling of soot with a microbalance, the mass of the soot was derived. To analyze the soot and its arrangement, filters were photographed by an electron microscope. Results showed that the mass of formed soot increased with pressure. Electron microscope photographs showed that the sizes of the fine soot particles also increased with pressure. The maximum amount of soot occurred with a variation of the oxygen concentration in the gaseous mixture. More soot was formed in the nitrogen-oxygen mixture than in the carbon dioxide-oxygen mixture. For normal paraffins, heavier hydrocarbons produced more soot than lighter ones.