COMPOSITION OF DIESEL FUEL Russian patent published in 2003 - IPC

FIELD: petrochemical industry. SUBSTANCE: invention presents a for internal-combustion engines (ICE). Composition of the diesel fuel includes: general diesel fuel, ethanol, a stabilizing dope and, optionally, alkyl ether of a fatty acid and/or a cosolvent. The stabilizing dope is picked out of a group consisting of a blend of two different ethoxylated fat alcohols, each of which has length of a hydrocarbon chain from 9 up to 13 carbon atoms, present in a molar ratio to each other from approximately 1:3 up to 3:1 inclusively; from 0 volumetric percents (vol. %) up to approximately 10 volume % inclusively in relation to the volume of a blend of dopant increasing the cetane number, as well as from 0 vol. % up to less than approximately 5 vol. % relatively to the volume of a blend of demulsifier; at that at least 75 % ethoxylated fat alcohol have concentration of the linear non-ramified alcohol, and the reaction product of (1)blend of ethoxilated alcohol and amide. At that the indicated ethoxilated alcohol contains at least about 75 mass % at least of one linear non-ramified alcohol, that has the length of its hydrocarbon chain from 9 up to 15 atoms of carbon, and the indicated amide represents mainly the equimolar product of reaction of alkamine and alkyl ether of a fatty acid; and (2) of ethoxylated fatty acid or its derivative, that have the length of a hydrocarbon chain from 9 up to 15 atoms of carbon. The composition may have alkyl ether of a fatty acid and a cosolvent. It also contains 0.5-10 vol. % of the stabilizing dope. EFFECT: composition of the fuel has increased cetane number and high resistance to its lamination at the presence of water. 22 cl, 6 ex, 2 tbl, 1 dwg