Method of cleaning a carbon dioxide rich flue gas and a boiler system
First Claim
1. A method of cleaning a carbon dioxide rich flue gas generated in a boiler combusting a fuel in the presence of a gas containing oxygen gas, the method comprising:
- forwarding the carbon dioxide rich flue gas from the boiler to a gas cleaning system,removing in said gas cleaning system at least a portion of a contaminant content of the carbon dioxide rich flue gas,pressurizing at least a portion of the carbon dioxide rich flue gas from which at least the portion of the contaminant content has been removed, andforwarding at least a portion of the pressurized portion of the carbon dioxide rich flue gas from which at least the portion of the contaminant content has been removed to at least one gas cleaning device for being utilized as a utility gas therein; and
utilizing the pressurized portion of the carbon dioxide rich flue gas from which at least the portion of the contaminant content has been removed by at least one of;
(i) flushing a cover for an isolator of the at least one gas cleaning device in the form of an electrostatic precipitator;
(ii) atomizing an absorption liquid of the at least one gas cleaning device in the form of a spray dryer absorber; and
(iii) fluidization of a particulate material of the at least one gas cleaning device in the form of a mixing device supplying the particulate material mixed with absorbent to a contact reactor bringing the particulate material mixed with the absorbent into contact with the carbon dioxide rich flue gas.
2 Assignments
0 Petitions
Accused Products
Abstract
A boiler system (101) comprises a boiler (2) for combusting a fuel in the presence of a gas containing oxygen gas, and a gas cleaning system (106). The boiler system (101) comprises a compression device being operative for pressurizing at least a portion of the carbon dioxide rich flue gas from which at least a portion of the contaminant content has been removed, and a carbon dioxide supply duct (142; 143; 145) being operative for forwarding at least a portion of the pressurized carbon dioxide rich flue gas to at least one gas cleaning device (108; 110; 111) for being utilized as a utility gas therein.
13 Citations
17 Claims
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1. A method of cleaning a carbon dioxide rich flue gas generated in a boiler combusting a fuel in the presence of a gas containing oxygen gas, the method comprising:
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forwarding the carbon dioxide rich flue gas from the boiler to a gas cleaning system, removing in said gas cleaning system at least a portion of a contaminant content of the carbon dioxide rich flue gas, pressurizing at least a portion of the carbon dioxide rich flue gas from which at least the portion of the contaminant content has been removed, and forwarding at least a portion of the pressurized portion of the carbon dioxide rich flue gas from which at least the portion of the contaminant content has been removed to at least one gas cleaning device for being utilized as a utility gas therein; and utilizing the pressurized portion of the carbon dioxide rich flue gas from which at least the portion of the contaminant content has been removed by at least one of; (i) flushing a cover for an isolator of the at least one gas cleaning device in the form of an electrostatic precipitator; (ii) atomizing an absorption liquid of the at least one gas cleaning device in the form of a spray dryer absorber; and (iii) fluidization of a particulate material of the at least one gas cleaning device in the form of a mixing device supplying the particulate material mixed with absorbent to a contact reactor bringing the particulate material mixed with the absorbent into contact with the carbon dioxide rich flue gas. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A boiler system comprising:
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a boiler for combusting a fuel in the presence of a gas containing oxygen gas, and a gas cleaning system being operative for removing at least a portion of a contaminant content of a carbon dioxide rich flue gas generated in the boiler, a compression device being operative for pressurizing at least a portion of the carbon dioxide rich flue gas from which at least the portion of the contaminant content has been removed, and a carbon dioxide supply duct being operative for forwarding at least a portion of the pressurized portion of the carbon dioxide rich flue gas from which at least the portion of the contaminant content has been removed to at least one gas cleaning device for being utilized as a utility gas therein; and wherein the at least one gas cleaning device comprises at least one of; (i) an electrostatic precipitator, the carbon dioxide supply duct being operative for forwarding the pressurized portion of the carbon dioxide rich flue gas from which at least the portion of the contaminant content has been removed to an isolator flushing system of the electrostatic precipitator, (ii) a spray dryer absorber, the carbon dioxide supply duct being operative for forwarding the pressurized portion of the carbon dioxide rich flue gas from which at least the portion of the contaminant content has been removed to a slurry atomization arrangement of the spray dryer absorber, and (iii) a mixing device supplying particulate material mixed with absorbent to a contact reactor being operative for bringing the particulate material mixed with the absorbent into contact with the carbon-dioxide rich flue gas, the carbon dioxide supply duct being operative for forwarding the pressurized portion of the carbon dioxide rich flue gas from which at least the portion of the contaminant content has been removed to the mixing device for fluidizing the particulate material in the mixing device. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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Specification