New process for upgrading of the co2 coming from the zone of the regeneration of the catalytic cracking unit box

摘要

Recovering all or part of carbon dioxide (CO 2) emissions from a catalytic cracking unit (FCC), where the CO 2 emissions are derived from flue gas of a regeneration zone of FCC by transforming the CO 2 in a mixture of hydrogen and hydrocarbons, comprises collecting CO 2 from flue gas of the FCC unit by absorption of the CO 2 in an aqueous solution of amines, regenerating the amine and releasing CO 2 gas, recovering CO 2 by contacting CO 2 gas with water vapor using a solid comprising at least a metallic oxide (MO), and regenerating the solid using a reducing agent from the FCC unit. Recovering all or part of carbon dioxide (CO 2) emissions from a catalytic cracking unit (FCC), where the CO 2 emissions are derived from flue gas of a regeneration zone of FCC by transforming the CO 2 in a mixture of hydrogen and hydrocarbons having at least four carbon atoms, comprises (a) collecting CO 2 from flue gas of the FCC unit by absorption of the CO 2 in an aqueous solution of amines, (b) regenerating the amine and releasing CO 2 gas, (c) recovering CO 2 at a temperature of 200-800[deg] C and a pressure of 0.2-17.5 MPa by contacting CO 2 gas with water vapor using a solid comprising at least a metallic oxide of formula (MO), and (d) regenerating the solid using a reducing agent from the FCC unit. M : group VIII of Mendeleev classification comprising Fe or Co.