System and method for carbon dioxide removal
a carbon dioxide and carbon dioxide technology, applied in the direction of machine operation, lighting and heating apparatus, separation processes, etc., can solve the problems of increasing operational costs, limiting the fuel source to gasification systems, and requiring a significant capital investmen
Inactive Publication Date: 2013-01-31
GENERAL ELECTRIC CO
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Benefits of technology
The patent text describes a system and method for removing carbon dioxide (CO2) from a fluid stream. The system includes an external heat transfer device and a magnetocaloric heat transfer device, which work together to remove heat from the fluid stream. Additionally, there is a cryogenic CO2 capture system that is coupled to the magnetocaloric heat transfer device, which captures the remaining CO2 after heat removal. The patent text highlights the technical effect of this system and method in reducing CO2 emissions from combustion facilities and other sources.
Problems solved by technology
These known pre-combustion methods limit the fuel source to gasification systems, require a significant capital investment, and increase operational costs.
These known oxyfuel combustion methods also require a significant capital investment, and result in increased operational costs, including increased auxiliary power consumption.
These known post-combustion methods further require a significant capital investment, and result in increased operational costs, including increased auxiliary power consumption.
However, use of known cryogenic CO2 capture methods with flue gases cooled to approximately ambient temperatures requires significant auxiliary power usage by a flue gas compression device.
For example, as the flue gas temperature decreases, the percentage of CO2 removed increases, and the costs of energy to achieve this result increases.
The relatively high energy usage to remove the heat from the flue gas and the energy used to compress the flue gases cooperate to significantly impact the costs of operating the associated facilities.
Method used
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[0012]In the following specification and the claims, reference will be made to a number of terms, which shall be defined to have the following meanings.
[0013]The singular forms “a”, “an”, and “the” include plural references unless the context clearly dictates otherwise.
[0014]“Optional” or “optionally” means that the subsequently described event or circumstance may or may not occur, and that the description includes instances where the event occurs and instances where it does not.
[0015]Approximating language, as used herein throughout the specification and claims, may be applied to modify any quantitative representation that could permissibly vary without resulting in a change in the basic function to which it is related. Accordingly, a value modified by a term or terms, such as “about” and “substantially”, are not to be limited to the precise value specified. In at least some instances, the approximating language may correspond to the precision of an instrument for measuring the val...
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A carbon dioxide (CO2) removal system includes an external heat transfer device. The CO2 removal system also includes a magnetocaloric heat transfer device coupled in flow communication with the external heat transfer device. The CO2 removal system further includes a cryogenic CO2 capture system coupled in flow communication with the magnetocaloric heat transfer device.
Description
BACKGROUND[0001]The subject matter described herein relates generally to fossil fuel-fired power generation facilities and, more particularly, to a system and method for removing carbon dioxide from an associated flue gas stream via magnetic refrigeration.[0002]Known fossil fuel-fired power generation facilities combust fossil fuels with air and produce flue gases that include carbon dioxide (CO2). Many of these known facilities use known methods to remove at least a portion of the CO2. Some known methods are used to facilitate pre-combustion capture, including shift conversion in fuel gasification systems. These known pre-combustion methods limit the fuel source to gasification systems, require a significant capital investment, and increase operational costs. Other known methods include oxyfuel combustion, wherein an oxygen-enriched gas is used rather than compressed air for combustion, thereby producing CO2-rich flue gases that facilitate CO2 removal due to the high concentration ...
Claims
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Login to View More IPC IPC(8): F25B21/00
CPCB01D53/002B01D53/005B01D2259/814B01D2257/504B01D2258/0283F25B21/00F25J3/067F25J2205/20F25J2210/70F25J2220/82F25J2230/08F25J2230/30F25J2240/02F25J2240/80F25J2270/908Y02C20/40
InventorVOGEL, CHRISTIANGONZALEZ SALAZAR, MIGUEL ANGELKULKARNI, PARAG PRAKASH
OwnerGENERAL ELECTRIC CO