Carbon dioxide removal and associated systems, devices, and methods

An apparatus for removal of carbon dioxide gas, the apparatus comprising:

• a web comprising a sorbent configured to absorb carbon dioxide, wherein the sorbent comprises an amine group and/or a molecular weight of less than 1,000 atomic mass units (AMUs);
• a drive system operably coupled to the web, wherein, in operation:
• the drive system transports the web from a first zone, in which the web is exposed to gas, to a second zone, and
• the first zone is at a first temperature and the second zone is at a second temperature at least 5 degrees Celsius greater than the first temperature;
• a heating mechanism configured to increase a temperature of the second zone at least to the second temperature;
• and
• a conductor thermally coupled to the heating mechanism, wherein the conductor is located between the heating mechanism and the web within the second zone, such that the conductor fluidically or spatially isolates the web from the heating mechanism.

An apparatus for removal of carbon dioxide gas, the apparatus comprising:

• a web comprising a sorbent configured to absorb carbon dioxide, wherein the sorbent comprises an amine group and/or a molecular weight of less than 1,000 atomic mass units (AMUs);
• a drive system operably coupled to the web, wherein, in operation:
• the drive system transports the web from a first zone, in which the web is exposed to gas, to a second zone, and
• the first zone is at a first temperature and the second zone is at a second temperature at least 5 degrees Celsius greater than the first temperature;
• a heating mechanism configured to increase a temperature of the second zone at least to the second temperature;
• and
• a conductor thermally coupled to the heating mechanism and located between the heating mechanism and the web within the second zone, wherein the conductor directly contacts the web.

An apparatus for removal of carbon dioxide gas, the apparatus comprising:

• a web comprising a sorbent configured to absorb carbon dioxide, wherein the sorbent comprises an amine group and/or a molecular weight of less than 1,000 atomic mass units (AMUs);
• a drive system operably coupled to the web, wherein, in operation:
• the drive system transports the web from a first zone, in which the web is exposed to gas, to a second zone, and
• the first zone is at a first temperature and the second zone is at a second temperature at least 5 degrees Celsius greater than the first temperature;
• a heating mechanism configured to increase a temperature of the second zone at least to the second temperature;
• and
• a first conductor, and a second conductor downstream of the first conductor within the second zone, wherein the first conductor is at or greater than the second temperature, and wherein the second conductor is at a temperature lower than the second temperature and is configured to recapture heat from the web.

An apparatus for removal of carbon dioxide gas, the apparatus comprising:

• a web comprising a sorbent configured to absorb carbon dioxide, wherein the sorbent comprises an amine group and/or a molecular weight of less than 1,000 atomic mass units (AMUs);
• a drive system operably coupled to the web, wherein, in operation:
• the drive system transports the web from a first zone, in which the web is exposed to gas, to a second zone, and
• the first zone is at a first temperature and the second zone is at a second temperature at least 5 degrees Celsius greater than the first temperature;
• a heating mechanism configured to increase a temperature of the second zone at least to the second temperature, wherein the second zone comprises a housing including a plurality of walls coupled to one another and that define a perimeter of the second zone, and wherein at least one of the plurality of walls includes a chemical component to inhibit reactions at a corresponding surface of the at least one of the plurality of walls.

A method for removing carbon dioxide gas, the method comprising:

• providing a web comprising a sorbent configured to absorb carbon dioxide, wherein the sorbent comprises an amine group and/or a molecular weight of less than 1,000 atomic mass units (AMUs);
• transporting the web via a drive mechanism from (i) a first zone to (ii) a second zone within an at least partially enclosed area;
• heating, using a heating mechanism, a portion of the web within the second zone to a predetermined minimum temperature, such that (i) the first zone is at a first temperature and the second zone is at a second temperature of at least 85 degrees Celsius and at least 5 degrees Celsius greater than the first temperature, and (ii) an affinity of the web within the second zone to absorb carbon dioxide decreases, wherein the heating mechanism is configured to hold a fluid having a temperature at or above the second temperature, and wherein the fluid does not directly contact the web;
• and
• removing fluid comprising at least 0.1% carbon dioxide from the second zone.

A system for removal of carbon dioxide gas, the system comprising:

• an apparatus comprising:
• a web comprising a sorbent configured to absorb carbon dioxide, wherein the sorbent comprises an amine group and/or a molecular weight of less than 1,000 atomic mass units (AMUs);
• a drive system operably coupled to the web, wherein, in operation, the drive system transports the web from a first zone, configured to be at a first temperature, toward a second zone, configured to be operated at a second temperature greater than the first temperature, wherein the second temperature is at least 85 degrees Celsius;
• and
• a heating mechanism configured to increase a temperature of the second zone at least to the second temperature, wherein the heating mechanism is configured to hold a fluid having a temperature at or above the second temperature, and wherein the fluid does not directly contact the web;
• and
• a controller operably coupled to the apparatus.