METHOD OF NATURAL GAS CLEANING AND DEVICE TO THIS END

摘要

FIELD: oil and gas industry.SUBSTANCE: method includes primary separation of raw natural gas flow with separation of water and gas condensate from it and further treatment of the separated gas from acid components containing hydrogen sulphide and carbon dioxide. Treatment from acid components is performed at two stages: at first hydrogen sulphide removal stage is implemented using adsorbent with hydrogen fractional selectivity and at the next stage carbon dioxide is removed using ultrasound separation. At that gas condensate upon primary separation and ultrasound separation is subjected to stabilization process and in this process gas is returned to hydrogen sulphide removal stage. Hydrogen sulphide upon hydrogen sulphide removal stage is sent to sulphur recovery stage by means of Claus conversion process, the obtained sulphur is subjected to degassing and gas from sulphur degassing is returned to sulphur recovery stage.EFFECT: improved treatment degree for natural gas from hydrogen sulphide and carbon dioxide at fuller conversion of sulphur compounds.14 cl, 1 tbl, 1 dwg