US 10,933,371 B2 · Gas recovery and concentration device

Abstract

An energy efficient and durable thermal swing type carbon dioxide recovery and concentration device can be made smaller and use low-temperature heat waste of 100° C. or less. A honeycomb rotor carries adsorption particles having a sorption capacity for carbon dioxide. The rotor is rotated in a sealed casing divided into at least an sorption zone and a desorption zone and is brought into contact with material gas that contains carbon dioxide in a state wherein the honeycombs in the sorption zone are moist so as to adsorb the carbon dioxide while carrying out evaporative cooling of water. Then, the honeycombs that have adsorbed the carbon dioxide are moved to the desorption zone and brought into contact with low pressure vapor so as to desorb high concentration carbon dioxide. Thus, it is possible to continuously recover carbon dioxide at a high recovery rate and high concentration.

Claims17

Dependent claims

A method comprising:

providing a honeycomb rotor which supports non-water soluble amine ion exchange carbon dioxide sorption particles having a sorption capability for carbon dioxide;
rotating the honeycomb rotor though at least a sorption zone and a desorption zone which are sealed from each other;
and
performing a recovery concentration method for carbon dioxide while rotating said honeycomb rotor, the recover concentration method comprising:
making said sorption zone contact with a mixed gas which contains carbon dioxide while said sorption zone is wet, to sorb carbon dioxide from the mixed gas by cooling the mixed gas and vaporizing water in said sorption zone;
and
after rotating the honeycomb rotor, desorbing the carbon dioxide by providing water vapor to the desorption zone and introducing the water vapor into honeycombs of said honeycomb rotor which have sorbed carbon dioxide, to thereby desorb carbon dioxide from the desorption zone in a state of high concentration.

4 more elements

A carbon dioxide recovery concentration device comprising:

a honeycomb rotor which supports non-water soluble carbon dioxide sorption particles having a sorption capability for carbon dioxide;
and
a rotor rotating device having at least a sorption zone and a desorption zone which are sealed from each other, the honeycomb rotor being rotatably provided in the rotor rotating device, wherein the carbon dioxide recovery concentration device is configured so that:
recovery concentration of carbon dioxide recovers carbon dioxide by rotating said honeycomb rotor,
a mixed gas which contains carbon dioxide at a relative humidity of 100% or less is introduced to the sorption zone while the sorption zone is wet, to sorb carbon dioxide from the mixed gas by vaporizing water and cooling the mixed gas in said sorption zone, and
carbon dioxide is desorbed in the desorption zone by introducing water vapor into honeycombs of said honeycomb rotor which have sorbed carbon dioxide, to desorb carbon dioxide, wherein
the rotor rotating device has first and second boundaries between the sorption zone and the desorption zone, where the sorption zone and the desorption zone are separated from one another in a rotating direction of the honeycomb rotor,
at least one of the first and second boundaries is provided as a water screen purge zone, and
water is introduced into the honeycomb rotor in each water screen purge zone.

6 more elements

Dependencies are inferred from the claim text.

Gas recovery and concentration device

Life of this patent

Gas recovery and concentration device

Life of this patent

Abstract

Claims17