关键词: 振荡反应, 界面膜, 乳化燃油, 燃烧

Abstract: A new type of oscillating reactions in combustion of emulsion fuels induced by interface membrane was found from thermocouple determination. The fundamental composition of the emulsion is 50 mL kerosene + 2. 5 beau oil + 20 mL 1 mol/L NaOH + 12. 5 mL 20%OP aqueous solution + 40 mL H₂O. Some substitutions were carried out. It was found from the experiment, the condition producing oscillation is that the amount of beau oil added In the emulsion is 1. 5～5 mL. The substitution of gasoline for kerosene can also produce a similar oscillation, but the diesel oil can not. It can be explained by the result obtained that the oscillation was resulted from the inhibition of the interface membrane on combustion and make the emulsion to burn more completely. The membrane was produced from long-chain carboxylate which is a hydrolysis product of beau oil added in the emulsion. Without beau oil and NaOH, there will be no oscillation phenomena in the combustion of emulsion fuels.

Key words: Oscillating reaction, Interface membrane, Emulsion fuels, Combustion