| 摘要 |
FIELD: chemistry. ^ SUBSTANCE: gas-oil composition includes a gas-oil composition and additives added in the following steps 1 and 2 and containing a synthetic base FT in amount of 60 vol. % or more with respect to total amount of the gas-oil composition, with weight content of sulphur equal to or less than 5 parts per million, content of aromatic compounds equal to less than 10 vol. %, content of oxygen equal to or less than 100 parts per million, final temperature of 360C or lower, insoluble residue after oxidation resistance test equal to less than 0.5 mg/100 ml, wear spot diameter HFRR (WS1.4) equal to less than 400 mcm and specific ratio of content of normal paraffins and their overall content, (step 1) a lubricity additive containing a fatty acid and/or fatty acid ester is mixed in amount of 20 mg/l or higher and 300 mg/l or less in units of the active component with the gas-oil composition through flow mixing, forced mixing or settling the mixture for a suitable period of time; and (step 2) an additive which enhances fluidity at low temperature, which contains a copolymer of ethylene vinyl acetate and/or a compound having surface activity, is mixed in amount of 20 mg/l or more and 1000 mg/l or less in units of the active component, with the gas-oil composition through flow mixing, forced mixing or settling the mixture for a suitable period of time. ^ EFFECT: gas-oil composition having low-temperature properties and having low fuel consumption characteristics, is suitable for use during winter. ^ 5 cl, 6 ex, 8 tbl, 1 dwg |
