Patent ID: 8999278
Filing Date: 2015-04-07
Classification: B01D,B01J,C04B

Abstract:
1. A method for removing at least one gaseous pollutant from a gas stream, comprising: adding a calcium-based sorbent to a chamber; feeding a carbonaceous material into the chamber concurrently with said adding of said calcium-based sorbent to the chamber; suspending said calcium-based sorbent in the chamber; calcining said calcium-based sorbent in the chamber to produce suspended lime at a controllable temperature and residence time; activating said carbonaceous material to produce an activated sorbent using steam activation; feeding said suspended lime from the chamber into a separate gas duct comprising a gas stream comprising at least one gaseous pollutant; and reacting said lime with said at least one gaseous pollutant to remove said at least one gaseous pollutant from the gas phase of said gas stream.