Absorption type—removal / condensing apparatus

• US 9,908,083 B2
• Filed: 12/21/2015
• Issued: 03/06/2018
• Est. Priority Date: 12/19/2014
• Status: Active Grant

• Current Assignee: Seibu Giken Co., Ltd.
• Original Assignee: Seibu Giken Co., Ltd.
• Inventors: Maruyama, Kanae, Inoue, Koji, Okano, Hiroshi, Kuroda, Ayako
• Primary Examiner(s): Lawrence, Frank
• Application Number:
  US14/976,601
• Publication Number:
  US 20160175772A1
• Time in Patent Office: 806 Days
• Field of Search: 96109, 96111, 96125, 95 10, 95139, 95113, 423228, 423230
• CPC Class Codes: B01D 2251/304 of sodium
• CPC Class Codes: B01D 2251/306 of potassium
• CPC Class Codes: B01D 2251/606 Carbonates
• CPC Class Codes: B01D 2252/20484 with one hydroxyl group
• CPC Class Codes: B01D 2252/20489 with two or more hydroxyl groups
• CPC Class Codes: B01D 2253/112 Metals or metal compounds not provided for in B01D2253/104 or B01D2253/106
• CPC Class Codes: B01D 2253/206 Ion exchange resins
• CPC Class Codes: B01D 2253/25 Coated, impregnated or composite adsorbents
• CPC Class Codes: B01D 2253/3425 Honeycomb shape
• CPC Class Codes: B01D 2257/302 Sulfur oxides
• CPC Class Codes: B01D 2257/404 Nitrogen oxides other than dinitrogen oxide
• CPC Class Codes: B01D 2257/406 Ammonia
• CPC Class Codes: B01D 2257/504 Carbon dioxide
• CPC Class Codes: B01D 2257/708 Volatile organic compounds V.O.C.'s
• CPC Class Codes: B01D 2257/90 Odorous compounds not provided for in groups B01D2257/00 - B01D2257/708
• CPC Class Codes: B01D 2258/06 Polluted air
• CPC Class Codes: B01D 2259/4009 using hot gas
• CPC Class Codes: B01D 2259/4508 for cleaning air in buildings
• CPC Class Codes: B01D 53/06 with moving adsorbents, e.g. rotating beds B01D53/025 takes precedence
• CPC Class Codes: B01D 53/62 Carbon oxides
• CPC Class Codes: Y02A 50/20 : Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
• CPC Class Codes: Y02C 20/40 : of CO2

Abstract

An absorption-type carbon dioxide removal/condensing apparatus is removes or condenses carbon dioxide so that the apparatus secures high recovery efficiency. The apparatus has a honeycomb rotor holding a carbon dioxide absorbent, which is divided into at least a processing zone and a reproduction zone. After anyone of reproduction air for heating and a processing air is humidified by a humidifying device, both airs are ventilated into the zones, respectively. Thereby, the apparatus can improve absorption performance and density performance. If the honeycomb rotor is further divided into at least first and second processing zones, an air to be processed is humidified by a humidifier to ventilate into the first processing zone, and then a portion or all of the processing air which passed through the first procession zone is passed through the second procession zone (second pass).

Claims

1. An absorption-removal/condensing apparatus comprising:

a honeycomb rotor which has an absorption function of carbon dioxide and supports a solid amine absorbent, said honeycomb rotor being divided into a processing zone and a reproduction zone at least,

carbon dioxide being removed from subject air to be processed by making the solid amine absorbent of the honeycomb rotor absorb the carbon dioxide contained in the air to be processed by ventilating the air to be processed through said processing zone, and the carbon dioxide absorbed in said processing zone by the solid amine absorbent being released into air for reproduction by ventilating the air for reproduction through said reproduction zone to regenerate the solid amine absorbent of said honeycomb rotor,

wherein said apparatus has at least one humidity adjustment device which makes high a relative humidity of at least one of the air for reproduction ventilated through said reproduction zone and the air to be processed ventilated through the processing zone.

2. The absorption removal/condensing apparatus according to claim 1, wherein said solid amine absorbent is a weakly basic ion-exchange resin which has primary amine and/or the second class amine as a functional group.

3. The absorption typo removal/condensing apparatus according to claim 1, wherein

the at least one humidity adjustment device comprises a processing zone humidifier,

the air to be processed ventilated into said processing zone is made to have a high relative humidity by said processing zone humidifier, and

a heatless humidifier is used as said processing zone humidifier.

4. The absorption removal/condensing apparatus according to claim 1, wherein

the at least one humidity adjustment device comprises a processing zone humidifier,

the air to be processed ventilated into said processing zone is made to have a high relative humidity by said processing zone humidifier, and

a cooling device is used as said processing zone humidifier.

5. The absorption removal/condensing apparatus according to claim 1, wherein

the at least one humidity adjustment device comprises a reproduction zone humidifier,

the air for reproduction ventilated into said reproduction zone is made to have a high relative humidity by said reproduction zone humidifier, and

a heatless humidifier is used as said reproduction zone humidifier.

6. The absorption type removal/condensing apparatus according to claim 1, wherein a portion of the processed air that has passed through said processing zone is re-circulated back to an entrance of the processing zone and is made to pass through said processing zone together with additional air to be processed.

7. The absorption removal/condensing apparatus according to claim 1, wherein

a portion of the air for reproduction air that has passed through said reproduction zone is re-circulated back to an entrance of said reproduction zone as circulatory air,

a heating device heats at least one of the air for reproduction and the circulatory air,

the at least one humidity adjustment device comprises a reproduction zone humidifier, and

at least one of the air for reproduction and the circulatory air is made to have a high relative humidity by said reproduction zone humidifier.

8. The absorption-type removal/condensing apparatus according to claim 1, wherein a total heat exchanger is mounted between an entrance and an exit of the reproduction zone, to transfer heat from the exit of said reproduction zone back to the entrance of said reproduction zone.

9. The absorption typo and the removal condensing apparatus according to claim 1, wherein

said honeycomb rotor is divided into at least the reproduction zone and first and second processing zones,

the at least one humidity adjustment device comprises a processing zone humidifier,

the air to be processed is humidified by the processing zone humidifier and passed through said first processing zone, and

a portion or all of the air to be processed that has exited from an exit of the first processing zone is made to pass through said second processing zone.

10. The absorption removal/condensing apparatus according to claim 1, wherein

said at least one humidity adjustment device comprises a reproduction zone humidifier, and

the reproduction zone humidifier makes high the relative humidity of the air for reproduction ventilated into said reproduction zone so that a reproduction zone entrance enthalpy becomes higher than a processing zone entrance enthalpy.

11. The absorption removal/condensing apparatus according to claim 1, wherein said apparatus controls a carbon dioxide extraction ratio by controlling a difference between a reproduction zone entrance enthalpy and a processing zone entrance enthalpy.

12. The absorption removal/condensing apparatus according to claim 1, wherein

a wind velocity at an entrance of the reproduction zone is set to be equal to a wind velocity at an entrance of the processing zone entrance, and

a carbon dioxide extraction ratio and an amount of carbon dioxide removal are controlled by controlling the wind velocity at the reproduction zone entrance and the processing zone entrance.

13. The absorption removal/condensing apparatus according to claim 1, wherein

said honeycomb rotor which has an absorption function of carbon dioxide serves as a first honeycomb rotor,

said apparatus further comprises a second honeycomb rotor, and

said second honeycomb rotor is selected from the group consisting of a honeycomb rotor which has a humidity absorption function, a honeycomb rotor which has a humidity adsorption function, a honeycomb rotor which has a function for removing an acidic gas, a honeycomb rotor which has a function for removing an alkaline gas, and a honeycomb rotor which has a function for removing a VOC.

14. The absorption removal/condensing apparatus according to claim 3, wherein the heatless humidifier is a selected from the group consisting of an evaporation humidifier, a water spray humidifier and an ultrasonic humidifier.

15. The absorption removal/condensing apparatus according to claim 5, wherein the heatless humidifier is a selected from the group consisting of an evaporation humidifier, a water spray humidifier and an ultrasonic humidifier.