FIELD: process engineering.
SUBSTANCE: invention relates to trapping of carbon dioxide from gas flow. In compliance with proposed method, for catching CO2 from gas flow during defrosting of solid CO2 in freezer gaseous CO2 is removed therefrom. Defrosting is performed by converting solid CO2 in freezer in gaseous CO2. In defrosting, the freezer is kept at inside pressure 50 kPa lower than that exceeding barometric pressure, preferably, 25 kPa lower than that exceeding barometric pressure, more preferably, 10 kPa lower than that exceeding barometric pressure and most preferably approximately at barometric pressure. Gaseous CO2 is evacuated from freezer. Note here that solid CO2 in freezer is converted in gaseous CO2 to directed to store. Anti-sublimation system comprises freezer and gaseous CO2 removal from freezer.
EFFECT: decreased weight of freezer and valves and accessories.
12 cl, 1 dwg
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