Method to increase CO2 capture efficiencies by carbonation and related carbonator
[EN] This invention discloses a method to increase the CO2 capture efficiency in a fluidized bed carbonator of CaO or Ca(OH)2 by exploiting the characteristics of a solid entrainment zone at the exit of the carbonator, where fine solids are in contact with the gas exiting the carbonator. The method being characterized by selectively cooling said entrainment zone to 500-600ºC by feeding the to the beginning of a solid entrainment zone part of the make-up flow of limestone at ambient temperature, by installing a heat exchanger section of a water/steam circuit, by spraying water or by feeding a flow of Ca(OH)2 powder at ambient temperature to capture the CO2 from the gas already depleted in CO2 that leaves the denser region of solids that is present at the bottom of the carbonator.
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| Format: | solicitud de patente biblioteca |
| Language: | English |
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2023-07-06
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| Online Access: | http://hdl.handle.net/10261/366185 |
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dig-incar-es-10261-3661852024-08-21T09:54:01Z Method to increase CO2 capture efficiencies by carbonation and related carbonator Procédé pour augmenter les rendements de capture de CO2 par carbonatation et carbonateur associé Abanades García, Juan Carlos Arias Rozada, Borja [EN] This invention discloses a method to increase the CO2 capture efficiency in a fluidized bed carbonator of CaO or Ca(OH)2 by exploiting the characteristics of a solid entrainment zone at the exit of the carbonator, where fine solids are in contact with the gas exiting the carbonator. The method being characterized by selectively cooling said entrainment zone to 500-600ºC by feeding the to the beginning of a solid entrainment zone part of the make-up flow of limestone at ambient temperature, by installing a heat exchanger section of a water/steam circuit, by spraying water or by feeding a flow of Ca(OH)2 powder at ambient temperature to capture the CO2 from the gas already depleted in CO2 that leaves the denser region of solids that is present at the bottom of the carbonator. [FR] La présente invention divulgue un procédé pour augmenter le rendement de capture de CO2 dans un carbonateur à lit fluidisé de CaO ou de Ca(OH)2 en exploitant les caractéristiques d'une zone d'entraînement de solides à la sortie du carbonateur, des solides fins étant en contact avec le gaz sortant du carbonateur. Le procédé est caractérisé par le refroidissement sélectif de ladite zone d'entraînement à 500-600 °C, en amenant une partie par une partie du flux d'appoint de calcaire à température ambiante au début d'une zone d'entraînement de solides, en installant une section d'échangeur de chaleur d'un circuit eau/vapeur, en pulvérisant de l'eau ou en amenant un flux de poudre de Ca(OH)2 à température ambiante pour capturer le CO2 à partir du gaz déjà appauvri en CO2 qui laisse la région plus dense de solides qui est présente au fond du carbonateur. Peer reviewed Consejo Superior de Investigaciones Científicas (CSIC) A1 Solicitud de patente con informe sobre el estado de la técnica 2024-08-21T09:54:01Z 2024-08-21T09:54:01Z 2023-07-06 2021-12-29 solicitud de patente WO2023126485 A1 http://hdl.handle.net/10261/366185 en EP4205832 A1 (2023-07-05) Sí open application/pdf |
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[EN] This invention discloses a method to increase the CO2 capture efficiency in a fluidized bed carbonator of CaO or Ca(OH)2 by exploiting the characteristics of a solid entrainment zone at the exit of the carbonator, where fine solids are in contact with the gas exiting the carbonator. The method being characterized by selectively cooling said entrainment zone to 500-600ºC by feeding the to the beginning of a solid entrainment zone part of the make-up flow of limestone at ambient temperature, by installing a heat exchanger section of a water/steam circuit, by spraying water or by feeding a flow of Ca(OH)2 powder at ambient temperature to capture the CO2 from the gas already depleted in CO2 that leaves the denser region of solids that is present at the bottom of the carbonator. |
| format |
solicitud de patente |
| author |
Abanades García, Juan Carlos Arias Rozada, Borja |
| spellingShingle |
Abanades García, Juan Carlos Arias Rozada, Borja Method to increase CO2 capture efficiencies by carbonation and related carbonator |
| author_facet |
Abanades García, Juan Carlos Arias Rozada, Borja |
| author_sort |
Abanades García, Juan Carlos |
| title |
Method to increase CO2 capture efficiencies by carbonation and related carbonator |
| title_short |
Method to increase CO2 capture efficiencies by carbonation and related carbonator |
| title_full |
Method to increase CO2 capture efficiencies by carbonation and related carbonator |
| title_fullStr |
Method to increase CO2 capture efficiencies by carbonation and related carbonator |
| title_full_unstemmed |
Method to increase CO2 capture efficiencies by carbonation and related carbonator |
| title_sort |
method to increase co2 capture efficiencies by carbonation and related carbonator |
| publishDate |
2023-07-06 |
| url |
http://hdl.handle.net/10261/366185 |
| work_keys_str_mv |
AT abanadesgarciajuancarlos methodtoincreaseco2captureefficienciesbycarbonationandrelatedcarbonator AT ariasrozadaborja methodtoincreaseco2captureefficienciesbycarbonationandrelatedcarbonator AT abanadesgarciajuancarlos procedepouraugmenterlesrendementsdecapturedeco2parcarbonatationetcarbonateurassocie AT ariasrozadaborja procedepouraugmenterlesrendementsdecapturedeco2parcarbonatationetcarbonateurassocie |
| _version_ |
1809105097124216832 |