US 9,539,540 B2 · Rotary moving bed for CO2 separation and use of same

Abstract

A rotary moving bed and process for separating a carbon dioxide from a gas stream is disclosed. The rotary moving bed can have a rotational assembly rotating on a vertical axis, and a plurality of sorbent cells positioned horizontally to the axis of rotation that fills a vertical space in the moving bed, where the sorbent cells adsorb the carbon dioxide by concentration swing adsorption and adsorptive displacement. The sorbent can be regenerated and the carbon dioxide recaptured by desorbing the carbon dioxide from the sorbent using concentration swing adsorption and desorptive displacement with steam. The gas flows in the system flow in a direction horizontal to the axis of rotation and in a direction opposite the rotational movement of the sorbent cells.

Claims23

Dependent claims

A rotary moving bed comprising

a rotational assembly having a vertical axis of rotation and a plurality of fixed sorbent cells positioned horizontally relative to the axis of rotation and each cell or a combination of cells filling the vertical space within the rotational assembly such that gases cannot bypass the sorbent cells,
a non-moving exterior structure;
a regeneration stream inlet and outlet;
and
a CO2 feed stream inlet and outlet;
wherein a regeneration stream flows from the regeneration inlet to the regeneration outlet in the opposite direction of rotation for the rotational assembly, and a CO2 feed stream flows from the CO2 feed stream inlet to the CO2 feed stream outlet in the opposite direction of rotation for the rotational assembly;
and
wherein the CO2 feed stream and the regeneration feed stream flow in a horizontal direction relative to the vertical axis of rotation.

5 more elements

A process for the separation and/or purification of CO2 gas from a CO2 feed stream, comprising

feeding a CO2 feed stream into a CO2 feed stream inlet of a rotary moving bed and collecting a CO2-depleted feed stream at a CO2 feed stream outlet of the rotary moving bed,
feeding a regeneration stream into a regeneration stream inlet of the rotary moving bed and collecting a CO2-enriched stream at the regeneration stream outlet of the rotary moving bed,
wherein the rotary moving bed comprises
a rotational assembly having a vertical axis of rotation and a plurality of fixed sorbent cells positioned horizontally relative to the axis of rotation and each cell or a combination of cells filling the vertical space within the rotational assembly such that air cannot bypass the sorbent cells,
a non-moving exterior structure;
a desorption region between the regeneration inlet and outlets;
and
an adsorption region between the CO2 feed stream inlet and outlet;
wherein the regeneration stream flows from the regeneration inlet to the regeneration outlet in the opposite direction of rotation for the rotational assembly, and the CO2 feed stream flows from the CO2 feed stream inlet to the CO2 feed stream outlet in the opposite direction of rotation for the rotational assembly;
and
wherein the CO2 feed stream and the regeneration feed stream flow in a horizontal direction relative to the vertical axis of rotation.

8 more elements

Dependencies are inferred from the claim text.

Rotary moving bed for CO2 separation and use of same

Life of this patent

Rotary moving bed for CO2 separation and use of same

Life of this patent

Abstract

Claims23