FIELD: production of fuel.
SUBSTANCE: invention relates to decontaminated, ultrapure liquid fuel for turbines operating on gas combustion products, and to methods and device for production of such fuel from crude oil, oil refining residual oil and other types of contaminated liquid material. Fuel having limit content of sulfur is formed by a combination of three streams of liquid hydrocarbons, wherein the rate of each flow coming into the combination is determined from the corresponding sulfur content and the corresponding contribution to the total final sulfur content in the combination, taking into account the flow rate of each of the other two streams and the corresponding sulfur content, and such flows are formed by fractionation of crude oil, either in the presence of added steam, or without it, into three liquid fractions F1, F2 and F3, wherein the output phase, in the form of mass % of crude oil, each fraction, is determined from the content thereof sulfur so that content of sulfur in fraction F1 is less than content of sulfur in fraction F2, which is lower content of sulfur than in fraction F3, then fraction F2 is treated, and two portions of fraction F3, one of which is a portion obtained as a result of solvent separation, treated such that each treated stream has a sulfur content which is less than the sulfur limit in the fuel and maximizes the output fraction of the fraction F1 with respect to the fractions F2 and F3, while increasing portion of medium in the fraction F1, which otherwise could be within range of lighter kerosene substances, to minimize the amount of light distillates in fraction F2, and it remains untreated, and when it is combined with treated fraction F2 and treated portions of fraction F3, then final limit content combination sulfur is not exceeded.
EFFECT: invention reduces corrosion action and ash deposition caused by oil-soluble metal traces in fuel.
23 cl, 1 dwg
