# US 11,298,650 B2 · Rotational absorber device and method for scrubbing an absorbate from a gas > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,298,650 B2 - Document ID: US11298650B2 - Status: Granted - Kind: B2 - Application number: 16/614,031 - Filed: 2018-05-01 - Published: 2020-03-05 - Granted: 2022-04-12 - Earliest claimed: 2017-05-16 - Assignees: Romico Hold A.V.V. - Applicants: Romico Hold A.V.V. - Inventors: Jozef Johannes Hubertus Brouwers - Web page: https://patentgrep.com/patent/US11298650B2 ## CPC - B01D 53/185: {Liquid distributors} - B01D 3/28: Fractionating columns with surface contact and vertical guides, e.g. film action - B01D 3/30: Fractionating columns with movable parts or in which centrifugal movement is caused - B01D 19/0052: {in rotating vessels, vessels containing movable parts or in which centrifugal movement is caused (B01D19/0026 takes precedence)} - B01D 53/1406: {Multiple stage absorption} - B01D 53/1481: {Removing sulfur dioxide or sulfur trioxide} - B01D 53/1487: {Removing organic compounds} - C07C 31/04: Methanol - 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) - C07C: ACYCLIC OR CARBOCYCLIC COMPOUNDS - Y02C: CAPTURE, STORAGE, SEQUESTRATION OR DISPOSAL OF GREENHOUSE GASES [GHG] ## Abstract A device and method for scrubbing an absorbate from a gas is described. The rotational absorber device comprises a housing having a gas inlet, a gas outlet, an absorbent liquid inlet and an absorbent liquid outlet; a rotor mounted for rotation in said housing and connecting to the inlets and outlets, the rotor comprising a plurality of scrubbing channels extending axially and parallel to a common rotation axis; and means for rotating the rotor. The device and method provide a scrubbing of the gas with improved selectivity and efficiency. ## Claims ### Claim 1 A rotational absorber device for scrubbing an absorbate from a gas, the device comprising: a housing having a gas inlet; a gas outlet; at least one absorbent liquid inlet; means for providing a sustained flow of absorbent liquid to the at least one absorbent liquid inlet; and at least one absorbent liquid outlet; at least one rotor mounted for rotation in said housing and fluidly connecting to the inlets and outlets, the at least one rotor comprising a plurality of scrubbing channels extending axially and parallel to a common central axis of rotation, wherein the channels are circumferentially enclosed by walls over an entire axial length of the at least one rotor, the at least one rotor being disposed between the at least one absorbent liquid inlet and the at least one absorbent liquid outlet; wherein the device further comprises: means for rotating the at least one rotor causing an absorbent liquid fed to the at least one rotor to be at least partly separated from a gas fed to the rotor, and exit the at least one rotor in the form of absorbent liquid droplets that are propelled radially outwards with respect to the common central axis of rotation of the at least one rotor towards the at least one absorbent liquid outlet where the absorbent liquid is discarded; and wherein the gas inlet and the at least one absorbent liquid inlet are located on one side of the at least one rotor, and the gas outlet and the at least one absorbent liquid outlet are located on an opposite side of the at least one rotor. ### Claim 2 (depends on 1) The rotational absorber device according to claim 1, wherein the axial length of the at least one rotor and the scrubbing channels ranges from 100-5000 times the cross-sectional width of the channels. ### Claim 3 (depends on 1) The rotational absorber device according to claim 1, further comprising pressurizing means adapted to increase the pressure of an inlet gas. ### Claim 4 (depends on 1) The rotational absorber device according to claim 1, wherein the plurality of scrubbing channels amounts to at least 10. ### Claim 5 (depends on 1) The rotational absorber device according to claim 1, further comprising an absorbent liquid collector that connects to the at least one absorbent liquid outlet. ### Claim 6 (depends on 1) The rotational absorber device according to claim 1, wherein the at least one rotor comprises a first rotor and a second rotor both mounted for rotation in said housing and disposed between the at least one absorbent liquid inlet and the at least one absorbent liquid outlet, whereby the second rotor is provided closer to the at least one absorbent liquid outlet axially than the first rotor. ### Claim 7 (depends on 4) The rotational absorber device according to claim 4, wherein the at least one absorbent liquid inlet comprises a first absorbent liquid inlet and a second absorbent liquid inlet, and the at least one rotor comprises a first rotor and a second rotor, the absorbent liquid inlets each being located at an upstream side of the a respective rotor, and wherein the at least one absorbent liquid outlet comprises a first absorbent liquid outlet and a second absorbent liquid outlet, the absorbent liquid outlets each being located at a downstream side of a respective rotor. ### Claim 8 (depends on 7) The rotational absorber device according to claim 7, wherein at least one of the first absorbent liquid outlet and the second absorbent liquid outlet reconnects to at least one of the first absorbent liquid inlet and the second absorbent liquid inlet. ### Claim 9 (depends on 1) A vessel provided with the rotational absorber device according to claim 1. ### Claim 10 (depends on 1) A method for scrubbing an absorbate from a gas, the method comprising providing a rotational absorber device in accordance with claim 1, feeding the gas to the gas inlet, selecting the absorbent liquid by the ability of the absorbate to dissolve in the absorbent liquid, feeding a sustained flow of the absorbent liquid to the at least one absorbent liquid inlet, rotating the at least one rotor in said housing which causes the absorbent liquid to be confined to an inward facing wall of the scrubbing channels and form a film thereto, allowing molecular transport of absorbate from the gas to the absorbent liquid, causing the absorbent liquid fed to the at least one rotor to be at least partly separated from the gas fed to the at least one rotor and exit the at least one rotor in the form of absorbent liquid droplets that are propelled radially outwards with respect to the common central axis of rotation of the at least one rotor towards the at least one absorbent liquid outlet, and exiting the gas through the gas outlet and the absorbent liquid through the at least one absorbent liquid outlet. ### Claim 11 (depends on 10) The method according to claim 10, wherein the absorbate comprises methanol.