METHOD OF NATURAL GAS DRYING AND CLEANING AND DEVICE TO THIS END Russian patent published in 2013 - IPC B01D53/26 

FIELD: process engineering.

SUBSTANCE: invention relates to processing of natural and associated oil gas. Proposed method comprises mixing with recirculating regeneration gas, separation from dropping liquid and mechanical impurities, two-step adsorption of heavy hydrocarbon vapors and water at synthetic carbon adsorbent and composite adsorbent, respectively, at simultaneous cooling of adsorbents by coolant to adsorption temperature but not higher than 50°C and not lower than water freezing point or hydrating temperature. It comprises also the regeneration of adsorbents at reduced pressure by indirect heating of adsorbents by heat carrier to regeneration temperature of 80-150°C and blowing out of desorbing vapors by purified gas fed in amount of 0.1-2.0% of purified gas flow rate. Besides it includes regeneration gas recirculation with the help of circular pump using steam condensate as a working fluid. Note here that regenerated adsorbents are cooled by indirect cooling by coolant to adsorption temperature.

EFFECT: higher yield of commercial gas, power savings, simplified device, reduced harmful emissions.

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