Patent ID: 7169211

Claim:
A method of processing high-temperature and low-pressure fumes in order to recover the available energy and to collect at high pressure the CO 2 present in the fumes, comprising the following stages: a) compressing said high-temperature and low-pressure fumes so as to obtain medium-pressure fumes, b) compressing said medium-pressure fumes so as to obtain high-pressure fumes, c) separating part of the carbon dioxide contained in said high-pressure fumes so as to obtain fumes depleted in carbon dioxide and high-pressure carbon dioxide, d) expanding said fumes depleted in carbon dioxide, e) vaporizing a cooling fluid by heat exchange with at least said high-temperature and low-pressure fumes, said medium-pressure fumes and said high-pressure fumes, f) expanding the vaporized fluid while recovering mechanical energy, g) condensing by cooling the expanded fluid, and h) compressing the condensed fluid so as to obtain the cooling fluid of stage e).