OSCILLATING REACTION IN COMBUSTION OF EMU LSION FUELS INDUCED BY INTERFACE MEMBRANE

A new type of oscillating reactions in combustion of emulsion fuels in duced by interface membrane was found from thermocouple determination. The fundamental composition of the emulsion is 50 mL kerosene + 2.5 b ean 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 experi ment, the condition producing oscillation is that the amount of bean o il added in the emulsion is 1.5 similar to 5 mL. The substitution of g asoline for kerosene can also produce a similar oscillation, but the d iesel oil can not. It can be explained by the result obtained that the oscillation was resulted from the inhibition of the interface membran e on combustion and make the emulsion to burn more completely. The mem brane was produced from long-chain carboxylate which is a hydrolysis p roduct of bean oil added in the emulsion. Without bean oil and NaOH, t here will be no oscillation phenomena in the combustion of emulsion fu els.