Composition as an additive to create clear stable solutions and microemulsions with a combustible liquid fuel to improve combustion

A combustible fuel composition of combustible liquid fret selected from diesel fuel, kerosene, heating oil, coal slurry oil and distilled vegetable oil and an additive as a clear microemulsion with water present wherein said additive comprises:

• (a) ethanol having between 0.5 and 10% water by volume of ethanol;
• (b) one or more alcohols selected from the group consisting of:
• (i) straight- or branched-chain alcohols having between 3 and 5 carbon atoms, and
• (ii) straight- or branched-chain alcohols having between 6 and 12 carbon atoms;
• (c) ethoxylated alcohols having between 6 and 18 carbon atoms, where the ethylene oxide add-on is less than 5 moles;
• (d) a fatty acid of the structure R—(C═O)—OH, wherein R is alkyl or alkylene having between about 10 to 24 carbon atoms, in combination with ammonia or urea in an anhydrous state or as an aqueous solution and the ammonia or urea is present sufficient to neutralize about 40-80% of the fatty acid;
• wherein components a, b, c, and d as the additive when combined with mixing with the combustible liquid fuel form a clear, stable microemulsion fuel composition having a viscosity within 10% of the original viscosity of the combustible liquid fuel, and wherein the ratio of the combustible liquid fuel to additive ranges from about 50:50 to 99:1 by volume, with the proviso that water is present in the composition sufficient to form the microemulsion and with the proviso that ethylene oxide condensation and ethylene oxide esterification products formed with 1) an alkyl phenol, 2) a fatty acid, or 3) a fatty alcohol where the ethylene oxide add-on is 5 or more moles 4) a polyol or 5) a polyol and long-chain fatty acid are completely eliminated.

A combustible fuel composition of combustible liquid fuel selected from diesel fuel, kerosene, heating oil, coal slurry oil and distilled vegetable oil and an additive as a clear microemulsion with water present wherein said additive comprises:

• (a) ethanol having between 5 and 10% water by volume of ethanol;
• (b) one or more alcohols selected form the group consisting of:
• (i) straight- or branched-chain alcohols having between 3 and 5 carbon atoms, and
• (ii) straight- or branched-chain alcohols having between 6 and 12 carbon atoms;
• (c) ethoxylated alcohols having between 6 and 18 carbon atoms, where the ethylene oxide add-on is less than 5 moles.
• (d) a fatty acid of the structure R—(C═O)—OH, wherein R is alkyl or alkylene having between about 10 to 24 carbon atoms, in combination with ammonia or urea in an anhydrous state or as an aqueous solution and the ammonia or urea is present sufficient to neutralize about 40-80% of the fatty acid;
• wherein components a, b, c, and d, as the additive when combined with mixing with combustible liquid fuel form a clear, stable micro emulsion fuel composition having a viscosity with 10% of the original viscosity of the combustible liquid fuel, and wherein the ratio of the combustible liquid fuel to additive ranges from about 50:50 to 99:1 by volume, with the proviso that water is present in the composition sufficient to form the microemulsion and with the proviso that ethylene oxide condensation and ethylene oxide esterification products formed with 1) an alkyl phenol, 2) a fatty acid, 3) a fatty alcohol where the ethylene oxide add-on is 5 or more moles, 4) a polyol or 5) a polyol and long-chain fatty acid are completely eliminated.