METHOD FOR PREPARATION OF FUEL GAS Russian patent published in 2016 - IPC C10G5/06 B01D3/28 

FIELD: oil and gas industry; energy.

SUBSTANCE: invention can be applied to oil and gas industry and power engineering. Gas (1) is mixed with absorbate (2), separated in separator (3) to separation gas (4) and absorbent (5), where the latter is separated into circulating (6) and balance (7) ones. Latter is mixed with separation gas (4), compressed with compressor (8), cooled in cooler (9), and fed into separation section of fractionating absorber (10), where it is divided into condensate (11) and gas, which through half-blind plate (12) is fed into absorption section of absorber (10), where it is absorbed by circulating absorbent cooled in cooler (13). From top of absorber (10) fuel gas (16) is discharged, and from half-blind plate (12) absorbate (2) is discharged. At least part (17) of balance absorbent (7) can be moved out as commercial product, and part (18) of condensate (11) can be recycled to compression stage.

EFFECT: invention allows reducing loss of C₅₊ hydrocarbons with fuel gas and improving its quality.

3 cl, 1 dwg