Dehumidifier and carbon dioxide recovery system

Abstract

To provide a dehumidifier that can reduce energy consumption in a carbon dioxide capture system that directly captures carbon dioxide from the atmosphere, and a carbon dioxide capture system equipped with a dehumidifier. [Solution] The dehumidifier 3 comprises a compressor 311 that compresses a heat transfer medium, a condenser 312 that releases the heat from the heat transfer medium compressed by the compressor 311 to the outside, an expansion valve 313 that reduces the pressure of the heat transfer medium supplied from the condenser 312, an evaporator 314 that evaporates the heat transfer medium supplied from the expansion valve 313 and absorbs heat from the outside, and a blower 315 that takes in air and sends the pre-treated gas, which has been cooled by passing through the evaporator 314 and from which moisture has been removed, toward the carbon dioxide recovery device of the carbon dioxide recovery system.

Claims

[Claim 1] A dehumidifying device used in a carbon dioxide recovery system that directly recovers carbon dioxide from the atmosphere, which removes moisture from the atmosphere, A compressor that compresses the heat transfer medium, A condenser that releases heat from the heat transfer medium compressed by the compressor to the outside, An expansion valve for reducing the pressure of the heat transfer medium supplied from the condenser, An evaporator that evaporates the heat transfer medium supplied from the expansion valve and absorbs heat from the outside, A blower that takes in air and cools it by passing it through the evaporator, thereby removing the moisture from the air, and sends the pre-treated gas toward the carbon dioxide recovery device of the carbon dioxide recovery system. A fluid pipe connected to the condenser, which guides the fluid heated by the condensation heat generated in the condenser, A heat exchanger connected to the condenser via the fluid piping, which performs heat exchange between the fluid supplied from the condenser through the fluid piping and the pre-treated gas supplied from the blower, A first path for guiding the pre-treated gas to the carbon dioxide recovery device, A second path guides the heated gas, which is heated by passing the pre-treated gas through the heat exchanger and sent toward the carbon dioxide recovery device by the blower, to the carbon dioxide recovery device. A dehumidifying device characterized by having the following features. [Claim 2] A carbon dioxide capture system that directly captures carbon dioxide from the atmosphere, A dehumidifier that removes moisture from the atmosphere, A carbon dioxide recovery device that adsorbs carbon dioxide from the pre-treated gas that has passed through the dehumidifier after the moisture has been removed by the dehumidifier, Equipped with, The dehumidifier described above is A compressor that compresses the heat transfer medium, A condenser that releases heat from the heat transfer medium compressed by the compressor to the outside, An expansion valve for reducing the pressure of the heat transfer medium supplied from the condenser, An evaporator that evaporates the heat transfer medium supplied from the expansion valve and absorbs heat from the outside, A blower that takes in air and cools it by passing it through the evaporator, thereby removing the moisture from the air, and sends the pre-treated gas toward the carbon dioxide recovery device. A fluid pipe connected to the condenser, which guides the fluid heated by the condensation heat generated in the condenser, A heat exchanger connected to the condenser via the fluid piping, which performs heat exchange between the fluid supplied from the condenser through the fluid piping and the pre-treated gas supplied from the blower, A first path for guiding the pre-treated gas to the carbon dioxide recovery device, A second path guides the heated gas, which is heated by passing the pre-treated gas through the heat exchanger and sent toward the carbon dioxide recovery device by the blower, to the carbon dioxide recovery device. A carbon dioxide capture system characterized by having the following features. [Claim 3] The carbon dioxide recovery device is An adsorption tank containing a carbon dioxide adsorbent that adsorbs carbon dioxide from the pre-treated gas, A heating source that heats the carbon dioxide adsorbent contained in the adsorption tank and releases the carbon dioxide adsorbed on the carbon dioxide adsorbent from the carbon dioxide adsorbent, It has, The carbon dioxide recovery system according to claim 2, characterized in that, after a heating operation is performed in which the carbon dioxide adsorbent is heated by the heat source and the carbon dioxide is released from the carbon dioxide adsorbent, a cooling operation is performed in which the carbon dioxide adsorbent is cooled by the pre-treated gas introduced to the adsorption tank through the first path.

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