Rotary moving bed for CO₂separation and use of same

摘要

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.

主权项

1. 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.