US 12,403,424 B2
Carbon dioxide removal and associated systems, devices, and methods
Marek Herrmann-Nowosielski, Cambridge, MA (US); and Alexander Nowosielski-Slepowron, Cambridge, MA (US)
Assigned to Sponge DAC, Inc., Cambridge, MA (US)
Filed by Sponge DAC, Inc., Cambridge, MA (US)
Filed on Jan. 21, 2025, as Appl. No. 19/033,424.
Claims priority of provisional application 63/623,775, filed on Jan. 22, 2024.
Prior Publication US 2025/0235821 A1, Jul. 24, 2025
Int. Cl. B01D 53/83 (2006.01); B01D 53/34 (2006.01); B01D 53/62 (2006.01); B01D 53/96 (2006.01)
CPC B01D 53/83 (2013.01) [B01D 53/346 (2013.01); B01D 53/62 (2013.01); B01D 53/96 (2013.01); B01D 2253/20 (2013.01); B01D 2257/504 (2013.01); B01D 2258/06 (2013.01); B01D 2259/40094 (2013.01); B01D 2259/40096 (2013.01); B01D 2259/40098 (2013.01)] 18 Claims
OG exemplary drawing
 
1. 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 of at least 85 degrees Celsius and at least 5 degrees Celsius greater than the first temperature; 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.