METHOD FOR OFF-GRADE FUEL PURIFICATION FROM ASPHALTENES AND SULPHUR COMPOUNDS AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2016 - IPC C10G53/14 C10G53/04 C10G53/10 C10G53/12 C10G19/02 C10G27/14 C10G17/06 

FIELD: fuel.

SUBSTANCE: invention relates to off-grade fuel purification from asphaltenes and sulphur compounds by mixing initial fuel fraction with extraction agent in the form of concentrated sulphuric acid followed by separation of the formed refined fraction by its treatment with neutralizing agent and water. Method distinctive aspect is that the initial fuel fraction is subjected to ozone oxidation prior to mixing, and fuel purification is single-flow in one cycle, where the extraction agent is used once in every cycle, and neutralising reagent is calcined soda, after treatment with water refined fraction is subjected to filtration and dehydration. Invention also relates to the device.

EFFECT: present invention provides a simple and efficient method and device for purification of dark, off-grade diesel and furnace fuel from undesirable impurities in one cycle of processing of initial fuel fraction and enables to obtain one whole flow of purified fuel, as well as to reduce the amount of used extraction agent - sulphuric acid, and to reduce the amount of hard-to-utilize residue (acid tar) formed upon extraction.

2 cl, 2 dwg