Patent ID: 8603222

Claim:
A system for calcination/carbonation cycle processing, the system comprising: mineral sorbent granules having a size distribution between about 40 microns and about 125 microns; A calciner reactor for receiving the mineral sorbent granules in a partially carbonated state, the calciner reactor being configured for granular flow of the partially carbonated sorbent granules under gravitational forces at a residence time of from 1 to 10 seconds; a heat exchange structure for transferring heat from hot flue gas through a wall of the calciner reactor to a granular flow of the sorbent granules for facilitating a calcination reaction of the sorbent granules to regenerate the sorbent granules; a gas extraction unit for removing gas products from the calciner, wherein the gas products comprise carbon dioxide from the calcination reaction; a carbonator reactor located below the calciner reactor for receiving the regenerated sorbent granules from the calciner reactor and for receiving a cold flue gas, such that the regenerated sorbent granules are partially carbonised while the flue gas is scrubbed and the partially carbonated sorbent granules and the scrubbed flue gas exit the carbonator reactor as respective hot materials; and a riser unit for cycling the partially carbonated sorbent granules from the carbonator reactor to the calciner reactor.