Patent ID: 8252089

Claim:
A method for compressing and drying a gas rich in carbon dioxide, comprising compressing the gas to produce a gas rich in carbon dioxide at a high pressure rich in carbon dioxide in a compressor, cooling the gas at a high pressure in a cooler to form a cooled gas, purifying the gas rich in carbon dioxide in a unit for drying by adsorption comprising; at least two bottles of adsorbent operating in a cycle in which one bottle is supplied with gas rich in carbon dioxide for drying whilst another bottle is pressurized and regenerated by a flow of dry gas produced by the drying unit, the drying unit producing at least one dry gas rich in carbon dioxide, wherein only during the first pressurization of at least one bottle, at start up, a part of the gas rich in carbon dioxide compressed in the compressor, taken upstream of the cooler and hotter than the cooled gas at the inlet to the drying unit is conveyed to the bottle to pressurize it.