GAS REFINING SYSTEM AND GAS REFINING METHOD

摘要

Disclosed are a gas refining system and a gas refining method. The gas refining system by an embodiment of the present invention comprises the following: a pressurizing unit pressurizing gas; a first refining unit refining the gas pressurized by the pressurizing unit, and producing first refined gas and first waste gas; a second refining unit refining the first refined gas and producing second refined gas and second waste gas; a third refining unit refining the second refined gas and producing third refined gas and third waste gas; and a returning line for supplying the third waste gas to the second refining unit. The first refined gas and the second refined gas are supplied to consuming facilities as production gas. [Reference numerals] (100) First refining unit; (200) Second refining unit; (300) Third refining unit; (AA) Third waste gas; (BB) Combustion; (CC) Second waste gas; (DD) Third refined gas(production gas); (EE) Second refined gas; (FF) First waste gas; (GG) Raw gas; (HH) First refined gas(production gas)