Inner Loop Seal and Method for Solid Recirculation in CO2 Capturing System Using Dry Sorbent and CO2 Capturing System Including the Inner Loop Seal for Solid Recirculation

摘要

The present invention relates to an inner loop room for recirculating a solid of a dry carbon dioxide collecting apparatus, a solid recirculating method using the inner loop room, and the dry carbon dioxide collecting apparatus having the inner loop room. The dry carbon dioxide collecting apparatus comprises: an absorption reactor; an absorption reactor cyclone; a regeneration reactor; and a regeneration reactor cyclone. The present invention relates to the inner loop room which is connected to a solid inlet pipe positioned between the absorption reactor cyclone and the regeneration reactor; is positioned inside the regeneration reactor; and controls solid flow. The inner loop room for recirculating the solid of the dry carbon dioxide collecting apparatus includes: a solid inlet unit; a solid discharge unit; and a gas spraying pipe. The solid inlet unit is connected to a lower end unit of the solid inlet pipe; and inlets an absorbent which absorbs carbon dioxide. The solid discharge unit is folded to an upper side in a lower end of the solid inlet unit; includes an upper opening unit; and discharges the absorbent to the opening unit. The gas spraying pipe is positioned on one side of the solid discharge unit; injects gas to a solid layer in the solid discharge unit; and fluidizes the gas.