METHOD FOR REDUCING CO2 EMISSIONS IN A FLOW OF GAS-BURNED COMBUSTION PRODUCTS AND INDUSTRIAL UNITS FOR IMPLEMENTING THIS METHOD

摘要

1. A method of reducing CO emissions in a stream of gaseous products of combustion, comprising: generating a stream of gaseous products of combustion; compressing a stream of gaseous products of combustion; recycling the first part of the compressed stream of gaseous products of combustion to the stage of generation and separating CO from the second part of the compressed stream of gaseous products of combustion to obtain a liquid stream CO and a stream of gaseous products of combustion essentially free of CO.2. The method according to claim 1, wherein the flow of gaseous products of combustion is generated during the combustion process. The method according to claim 2, in which the flow of gaseous products of combustion is produced in power plants operating on coal or natural gas, in boilers operating on liquid fuel, or in cement or steel production. The method according to claim 3, in which the flow of gaseous products of combustion is generated at power plants operating on natural gas. The method according to claim 1, wherein CO is separated from the second part of the compressed flow of gaseous products of combustion using a cryogenic separator, a method using selective relative to CO membranes, an adsorption process, an absorption process, a diaphragm, or a combination thereof. The method according to claim 1, wherein CO is separated from the second part of the compressed stream of gaseous products of combustion using a cryogenic separator. The method according to claim 6, wherein the flow of gaseous products of combustion is compressed to a pressure of less than about 0.5 MPa (5 atm.). The method according to claim 7, wherein the flow of gaseous products of combustion is compressed to a pressure of from about 0.1 MPa to about 0.4 MPa (from 1 atm to 4 atm.). The method according to claim 1, in which