Fluidized bed and method and system for gas component capture
AssigneeADA-ES, Inc.
InventorsHolly Krutka, Cody Wilson, Travis Starns
Life of this patent
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Abstract
The present disclosure is directed to a process that allows dry sorbents to remove a target constituent, such as carbon dioxide (CO2), from a gas stream. A staged fluidized bed separator enables gas and sorbent to move in opposite directions. The sorbent is loaded with target constituent in the separator. It is then transferred to a regenerator where the target constituent is stripped. The temperature of the separator and regenerator are controlled. After it is removed from the regenerator, the sorbent is then transferred back to the separator.
Claims22
A method, comprising:
- receiving a gas stream comprising a target constituent to be removed by a solid sorbent;
- fluidizing sequentially a plurality of beds of the sorbent with the gas stream to sorb the target constituent on the solid sorbent in the beds, wherein a direction of flow of the gas stream is counter to a direction of flow of sorbent from a first of the plurality of beds to a second of the plurality of beds;
- removing a target constituent-loaded sorbent from a last of the plurality of beds;
- and
- desorbing the constituent from the constituent-loaded sorbent to form a target constituent-rich product gas and a constituent-lean sorbent for recycle to a selected one of the plurality of beds.
A method, comprising:
- fluidizing sequentially a plurality of beds of target constituent-loaded solid sorbent with a gas stream to desorb, into the gas phase, the target constituent from the solid sorbent in the beds and form a lean solid sorbent, wherein a direction of flow of the gas stream is counter to a direction of flow of the target constituent-loaded solid sorbent from a first of the plurality of beds to a second of the plurality of beds;
- and
- collecting, as a product gas, the desorbed target constituent.
A fluidized bed separation system, comprising:
- a plurality of stacked beds fluidized by a fluidization gas, wherein the plurality of stacked beds comprise one of a target constituent-loaded solid sorbent and a target constituent-lean solid sorbent;
- a down comer operable to move sorbent particles from a first bed to a lower second bed;
- and
- an input for the fluidization gas, wherein the fluidization gas flows countercurrently to movement of the sorbent particles from the first to the second beds.
Dependencies are inferred from the claim text.