Patent ID: 8585993
Filing Date: 2013-11-19
Classification: B01D,B01J,C01B,C01G,C01P,Y02P

Abstract:
1. A method for regenerating amorphous iron oxide hydroxide after being used as a desulfurizer, the method comprising the following steps: (1) grinding a waste mixture into waste powder, wherein the waste mixture results from use of the amorphous iron oxide hydroxide as a desulfurizer; (2) preparing the waste powder into a suspension and charging the suspension with a gas comprising oxygen to obtain a slurry comprising the amorphous iron oxide hydroxide and elemental sulfur; and (3) placing the slurry or a solid resulting from filtering the slurry into a container and charging the slurry or the solid with air so that the elemental sulfur floats and the amorphous iron oxide hydroxide precipitates.