# US 12,214,311 B2 · Capturing carbon dioxide > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,214,311 B2 - Document ID: US12214311B2 - Status: Granted - Kind: B2 - Application number: 17/544,578 - Filed: 2021-12-07 - Published: 2022-06-09 - Granted: 2025-02-04 - Earliest claimed: 2020-12-07 - Assignees: Carbon Engineering ULC - Applicants: Carbon Engineering ULC - Inventors: Douglas Edward Olmstead; Megan Lynn O'Brien; Teresa Juliet Pena Bastidas; Todd Ernest Wilke - Web page: https://patentgrep.com/patent/US12214311B2 ## CPC - B01D 53/18: Absorbing units; Liquid distributors therefor (B01D3/16, B01D3/26, B01D3/30 take precedence; packing elements B01J19/30, B01J19/32) - B01D 53/185: {Liquid distributors} - B01D 53/14: by absorption - B01D 53/1475: {Removing carbon dioxide} - B01D 53/62: Carbon oxides - B01D 53/78: with gas-liquid contact - B01J 19/32: Packing elements in the form of grids or built-up elements for forming a unit or module inside the apparatus for mass or heat transfer - C08J 5/18: Manufacture of films or sheets - C08J 7/056: Forming hydrophilic coatings - C09D 175/14: Polyurethanes having carbon-to-carbon unsaturated bonds - B01D 2251/304: of sodium - B01D 2251/306: of potassium - B01D 2251/602: Oxides - B01D 2252/10: Inorganic absorbents - B01D 2257/504: Carbon dioxide - B01D 2258/06: Polluted air - C08J 2327/06: Homopolymers or copolymers of vinyl chloride - C08J 2475/14: Polyurethanes having carbon-to-carbon unsaturated bonds - Y02C 20/40: of CO2 - B01D: SEPARATION (separating solids from solids by wet methods B03B, B03D; by pneumatic jigs or tables B03B; by other dry methods B07; magnetic or electrostatic separation of solid materials from solid materials or fluids, separation by high-voltage electric fields B03C; centrifuges, vortex apparatus B04; presses per se for squeezing-out liquid from liquid-containing material B30B9/02; treatment of water C02F, e.g. softening by ion-exchange C02F1/42; {arrangements of air intake cleaners in gas turbine plants F02C7/05} ; arrangements or mounting of filters in air-conditioning, air-humidification or ventilation F24F13/28) - B01J: CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS - C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29) - C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D) - Y02C: CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG] ## Abstract A system for removing CO2 from a dilute gas mixture includes a frame including a plurality of structural members; at least one packing section including one or more packing sheets, the one or more packing sheets including a plurality of macrostructures; one or more basins positioned at least partially below the at least one packing section, the one or more basins configured to hold a CO2 capture solution; at least one fan positioned to circulate a CO2 laden gas through the at least one packing section; and a liquid distribution system configured to flow the CO2 capture solution onto the at least one packing section. ## Claims ### Claim 1 A system for removing CO2 from a dilute gas mixture, the system comprising: a frame comprising a plurality of structural members; at least one packing section comprising one or more packing sheets, the one or more packing sheets comprising a plurality of macrostructures; one or more bottom basins positioned at least partially below the at least one packing section relative to a flow of a CO2 capture solution along the at least one packing section, the one or more bottom basins configured to hold the CO2 capture solution; at least one fan positioned to circulate a CO2-laden gas through the at least one packing section; and a liquid distribution system comprising one or more top basins for the CO2 capture solution, the one or more top basins for the CO2 capture solution configured to direct the CO2 capture solution to the at least one packing section at a liquid loading rate in a range from 0.5 L/m2s to 5.0 L/m2s, the liquid distribution system comprising one or more redistribution systems positioned above the one or more bottom basins and within the at least one packing section. ### Claim 2 (depends on 1) The system of claim 1, wherein the at least one packing section and fan are configured to flow the CO2-laden gas through the at least one packing section in a crossflow configuration relative to the CO2 capture solution. ### Claim 3 (depends on 1) The system of claim 1, wherein the at least one packing section and fan are configured to flow the CO2-laden gas through the at least one packing section in a counterflow configuration relative to the CO2 capture. ### Claim 4 (depends on 1) The system of claim 1, wherein: the one or more-top basins are positioned at least partially above the at least one packing section relative to the flow of the CO2 capture solution along the at least one packing section; and the liquid distribution system comprises the one or more redistribution systems positioned below the one or more-top basins. ### Claim 5 (depends on 1) The system of claim 1, wherein the one or more packing sheets comprise a first set of gradual channels at a first angle and a second set of gradual channels at a second angle that is greater than the first angle. ### Claim 6 (depends on 5) The system of claim 5, wherein the first angle is 15 degrees and the second angle is 45 degrees or less. ### Claim 7 (depends on 1) The system of claim 1, wherein the one or more packing sheets comprises a hydrophilic surface coating. ### Claim 8 (depends on 1) The system of claim 1, wherein the one or more packing sheets comprises a hydrophilic surface treatment. ### Claim 9 (depends on 1) The system of claim 1, wherein the plurality of macrostructures comprises at least one of: corrugations, flutes, herringbone, or channels. ### Claim 10 (depends on 9) The system of claim 9, wherein the one or more packing sheets further comprises a plurality of microstructures. ### Claim 11 (depends on 10) The system of claim 10, wherein the plurality of microstructures comprises a plurality of ridges that are nonparallel to the corrugations. ### Claim 12 (depends on 10) The system of claim 10, wherein the corrugations are aligned with a direction of the flow of the CO2 capture solution from the one or more top basins onto the at least one packing section. ### Claim 13 (depends on 11) The system of claim 11, wherein the plurality of microstructures comprises at least one of ridges, dimples, pores, etches, granules, fibres, perforations, or a combination thereof. ### Claim 14 (depends on 13) The system of claim 13, wherein the ridges comprise a plurality of cross-stream ridges. ### Claim 15 (depends on 7) The system of claim 7, wherein the hydrophilic surface coating comprises a cellulose layer and at least one of an EVA layer or a PVC glue layer. ### Claim 16 (depends on 7) The system of claim 7, wherein the hydrophilic surface coating comprises at least one acrylic coating. ### Claim 17 (depends on 16) The system of claim 16, wherein the at least one acrylic coating comprises at least one of a urethane-acrylic hybrid copolymer or a self-crosslinking acrylic copolymer emulsion. ### Claim 18 (depends on 17) The system of claim 17, wherein the at least one acrylic coating comprises: a first acrylic layer that comprises the urethane-acrylic hybrid copolymer or the self-crosslinking acrylic copolymer emulsion; and a second acrylic layer that comprises the urethane-acrylic hybrid copolymer blended with the self-crosslinking acrylic copolymer emulsion. ### Claim 19 (depends on 1) The system of claim 1, wherein the one or more packing sheets comprises a hydrophilic material composition. ### Claim 20 (depends on 19) The system of claim 19, wherein the hydrophilic material composition comprises a PVC resin or vinyl compound. ### Claim 21 (depends on 1) The system of claim 1, wherein the CO2 capture solution comprises a low surface tension CO2 capture solution. ### Claim 22 (depends on 1) The system of claim 1, wherein the one or more packing sheets comprises at least one of: a rate-enhancing additive or a rate-enhancing coating. ### Claim 23 (depends on 1) The system of claim 1, wherein the one or more packing sheets comprises a plurality of dissolvable solids. ### Claim 24 (depends on 1) The system of claim 1, wherein the CO2 capture solution comprises a caustic capture solution. ### Claim 25 (depends on 1) The system of claim 1, wherein the liquid distribution system is configured to flow the CO2 capture solution from the one or more bottom basins onto the at least one packing section. ### Claim 26 (depends on 1) The system of claim 1, wherein the one or more redistribution systems comprises one or more liquid basins.