METHOD AND APPARATUS FOR EXTRACTING CARBON DIOXIDE FROM AIR
First Claim
1. A process for removing carbon dioxide from air, comprising passing ambient air in contact with a sorbent to absorb carbon dioxide from the air, delivering the carbon dioxide to a controlled environment, and removing excess carbon dioxide from an exhaust stream exiting the controlled environment.
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Accused Products
Abstract
A method and apparatus for extracting CO2 from air, and for delivering that extracted CO2 to controlled environments, such as a greenhouse, or to open-air agricultural fields. The present disclosure allows the delivery of CO2 to be made at times of highest demand. The present disclosure contemplates several geometric configurations to enhance the CO2 extraction process. The present disclosure also provides a method of delivering the CO2 to the controlled environment in response to demand, such as for example, by using a secondary sorbent as a buffer to store extracted CO2.
147 Citations
49 Claims
- 1. A process for removing carbon dioxide from air, comprising passing ambient air in contact with a sorbent to absorb carbon dioxide from the air, delivering the carbon dioxide to a controlled environment, and removing excess carbon dioxide from an exhaust stream exiting the controlled environment.
- 3. An apparatus for adding carbon dioxide to a controlled environment, comprising an extractor for extracting carbon dioxide from ambient air outside of the controlled environment and delivering the carbon dioxide into the controlled environment, wherein the extractor further comprises an ion exchange material in a solid frame that forms a partial enclosure having at least two openings to allow air to enter and exit the extractor.
- 8. An apparatus for adding carbon dioxide to a controlled environment which comprises an extractor for extracting carbon dioxide from air outside of the controlled environment and delivering the extracted carbon dioxide into the controlled environment, wherein the extractor includes a plurality of moveable filters comprised of a carbon dioxide capture material that are placed in contact with ambient air to capture carbon dioxide and moved on a track into an enclosure to release the extracted carbon dioxide.
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12. A method for delivering carbon dioxide to a controlled environment, comprising capturing carbon dioxide from ambient air using a plurality of moveable filters, the moveable filters having a strong humidity function;
- storing the filters until needed; and
exposing the moveable filters to warm, humid air of the controlled environment to release the carbon dioxide when desired.
- storing the filters until needed; and
- 13. A process for removing carbon dioxide from ambient air and for delivering carbon dioxide to a controlled environment wherein the temperature of the ambient air is substantially lower than the air within the controlled environment to which the carbon dioxide is to be delivered, comprising the steps of heating the ambient air, passing the heated air in contact with a sorbent to absorb carbon dioxide from the air, and delivering the carbon dioxide to a controlled environment.
- 17. An apparatus for managing heat in a controlled environment without producing excess carbon dioxide, comprising at least two thermally insulated reservoirs located adjacent to the controlled environment, wherein a first reservoir is maintained at an elevated temperature and a second reservoir is maintained at a lower temperature.
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21. A process for capturing carbon dioxide and delivering the captured carbon dioxide to a controlled environment, comprising the steps of capturing carbon dioxide from the air of a livestock facility and delivering the captured carbon dioxide to a controlled environment.
- 22. A method for managing a carbon dioxide level in a controlled environment, comprising using a primary sorbent to collect carbon dioxide, transferring at least a part of the collected carbon dioxide to a secondary sorbent, storing the collected carbon dioxide in the secondary sorbent, and releasing the stored carbon dioxide as desired for operation of the controlled environment.
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30. An apparatus for managing the level of carbon dioxide in a controlled environment, comprising:
- a primary sorbent for capturing carbon dioxide from an air stream;
an enclosure in which carbon dioxide from the primary sorbent may be released;
at least two gas-liquid interfaces for recapturing the carbon dioxide on a secondary sorbent; and
at least one container for storing the secondary sorbent.
- a primary sorbent for capturing carbon dioxide from an air stream;
- 31. A method for carbon dioxide fertilization of open agricultural fields, comprising capturing carbon dioxide from air adjacent the field and releasing the carbon dioxide in a manner that will raise the carbon dioxide concentration near the plants in the field.
- 46. A method for determining the amount of fossil carbon that has been incorporated into a controlled environment containing plants, comprising measuring the carbon-14 content of the plants.
Specification