Condensate fuel

There are many mechanisms involved in the propagation of a flame through a condensed fuel [13], The problem is extremely complicated therefore, the simplest case will be used here, namely, the opposed-flow flame spread. The tip of the flame controls the opposed-flow flame spread and all the transport mechanisms involved are presented in Figure 3.8. 

Theoretical research into the problem of combustion propagation on the surface of condensed fuels involving heterogeneous oxidation has been reported It has been found that the combustion velocity depends on thermal effects, kinetic parameters of the exothermic oxidation reaction on the surface, and on the rate of... 

Carbon residue may be present in the diesel fuel in suspended form. The carbon residue can be removed by ultracentrifuging. In the Smuda process some of the light layered clays can be carried out of the pyrolysis vessel with the hot pyrolytic gases and can be entrained in the condensed fuel. 

Ghosh, A.C., Patil, G.S. and Dutta, N.N. (1994). Liquid membrane permeation of aromatic hydrocarbons in LPG condensate. Fuel Process. Technol., 38, 17-30. 

The calorific value or heat of combustion or heating value of a sample of fuel is defined as the amount of heat evolved when a unit weight (or volume in the case of a sample of gaseous fuels) of the fuel is completely burnt and the products of combustion cooled to a standard temperature of 298 °K. Net calorific value assumes the water leaves with the combustion products without fully being condensed. Fuels should be compared based on the net calorific value (Table 2.55). The calorific value of coal varies considerably depending on the ash, moisture content and the type of coal, while calorific values of fuel oils are much more consistent. Table 2.55 shows that oil and gas have about 30% less specific CO2 emission than coal, based either on carbon content or energy output the only reason for this difference is the water content of the fuel and the energy loss due to water evaporation. Water condensation and heat recovery seems a way to increase the net efficiency and hence reduce emissions. 

Normal Electric HP Steam MP Steam LP Steam Condensate Fuel... 

The reaction zone inside the flame is characterized by maximum temperature and light emission. The rate of combustion is determined by either of the stages, depending on the nature of the condensed fuel and the oxidizing agent. This zone is called the leading zone. 

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