Method For Trapping Carbon Dioxide By Cryocondensation

A method for producing at least one CO2-lean gas and one or more CO2-rich fluids from a process fluid containing CO2 and at least one compound more volatile than CO2, comprising:

• a) a cooling in at least one vessel of at least part of said process fluid so as to obtain at least one solid containing predominantly CO2 by cryo-condensation of part of said process fluid and at least one residual gas containing said CO2-lean gas;
• b) an extraction from said vessel of at least part of said solid formed in step a);
• and
• c) a liquefaction and/or sublimation of at least a part of said solid extracted in step b) so as to obtain one or more CO2-rich fluids;
• wherein the time intervals during which said step b) is implemented are included within the time intervals during which said step a) is implemented.