Patent ID: 9040004
Filing Date: 2015-05-26
Classification: B01D

Abstract:
1. Method for cleaning exhaust gases comprising combining an exhaust gas and a sorbent in a fluidized bed reactor, segregating solid matter in a subsequent filter system and then re-channeling up to 99% of the sorbent into the fluidized bed reactor, wherein the fluidized bed reactor comprises an expanded circulating fluidized bed and that the gas is subjected to a rotation about the flow axis in the fluidized bed reactor, wherein the rotational movement of the gas is achieved by installations in at least one nozzle, which is located in the gas and sorbent injection region of the fluidized bed reactor and the at least one nozzle comprises single or multiple nozzles and the installations in the single or multiple nozzles comprise guide vanes, and adjusting a gas speed relative to the empty reactor of 2 m/s to 10 m/s and/or a mean solid residence time of 15 min to 200 min by external solids recirculation and/or a mean solid loading of 1 kg/m