METHOD FOR REGENERATIVE CLEANING OF HYDROCARBON RAW FROM ACID IMPURITIES Russian patent published in 2019 - IPC C10G19/00 C10G19/02 C10G19/08 

FIELD: cleaning devices.

SUBSTANCE: invention relates to methods for cleaning gasoline, kerosene, diesel fractions, light oils and gas condensates from acidic impurities and can be used in the refining, oil producing and petrochemical industries. In the described method of alkaline purification of hydrocarbons from acidic impurities, an aqueous solution of potassium hydroxide with a concentration of 40–50 wt. % Is used as the alkaline agent, and as a by-product the concentrate of potassium salts of organic acids is released, the alkaline solution, after settling from the concentrate of salts of organic acids, is reused, the concentration of the alkaline solution is maintained by constantly adding to it the calculated amount of solid potassium hydroxide, and the reaction water accumulated in the alkaline solution, when absorbed in acidic impurities, is subjected to gas or stripping.

EFFECT: technical result is obtaining as a by-product a concentrate of potassium salts of organic acids and the elimination of the continuous formation of toxic wastewater.

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