METHOD FOR TREATMENT OF LIGHT HYDROCARBON FRACTIONS Russian patent published in 2013 - IPC C10G21/20 C10G19/02 C10G19/08 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to the method of treatment of light hydrocarbon fractions containing sulphureous compounds and carbon dioxide, by means of contact in a counterflow absorber within a single stage with a circulating modified aqueous solution of alkanolamine regenerated to preserve a modifying additive by means of temperature desorption of carbon dioxide and sulphureous compounds. The modifying additive is sodium hydroxide in the amount of 0.005-1%, which after regeneration together with the absorbent is returned into the process. Absorbent supply into the absorber column is carried out by two flows into the upper and medium part of the column, the flow of saturated absorbent is discharged accordingly from the medium and the lower part of the absorber, flows are combined and sent for regeneration into a desorber.

EFFECT: high extent of treatment from carbon dioxide, hydrogen sulfide and other sulphureous compounds.

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