Experimental Study of Combustion of Liquid Hydrocarbons under the Conditions of Vapor Gasification in the Presence of a Diluent Gas
E. P. Kopyev1, E. Yu. Shadrin1, I. S. Sadkin1, M. A. Mukhina1, S. Yu. Shimchenko2
1Kutateladze Institute of Thermophysics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090 Russia
2Lykov Institute of Heat and Mass Transfer, National Academy of Sciences of Belarus, Minsk, 220072 Belarus
Keywords: liquid hydrocarbons, combustion, water vapor, diluent gas, gas analysis, burning efficiency, NO
Abstract
The characteristics of combustion of liquid hydrocarbons in the presence of a mixture of superheated water vapor with a diluent gas in a vaporizing burner are studied by an example of diesel fuel. Carbon dioxide is used as a diluent gas. The experiments reveal regimes of injection of superheated water vapor or carbon dioxide, as well as their mixture in various proportions, that ensure similar profiles of the mean flame temperature, thermal power, and air-to-fuel ratio. It is demonstrated that fuel burning in the presence of superheated water vapor, carbon dioxide, and their mixture allows reaching low concentrations of CO and NO x in combustion products. In the case of CO2 injection, these values are at the boundary of admissible concentrations for class 3 in accordance with the EN:267 norms. In the case of injection of only superheated water vapor, the nitrogen oxide emissions in flue gases are smaller than those in the case of carbon dioxide injection: reduction of NO x emissions can reach 15 %.
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