Patent ID: 7470412
Filing Date: 2008-12-30
Classification: B01D,C10G,F23G,Y02A,Y02C,Y02P

Abstract:
1. A method for treating a regenerator flue gas stream comprising (A) providing from a catalyst regenerator a regenerator flue gas stream that contains NOx and carbon monoxide; (B) mixing fuel and oxygen and combusting a portion of the oxygen in the mixture with said fuel to form a hot oxidant stream that has a temperature of at least 2000 F and that contains oxygen and products of said combustion; (C) feeding the hot oxidant stream at a velocity of at least 500 feet per second into the regenerator flue gas stream to form a mixture having a temperature higher than 1250 F sufficient to convert carbon monoxide in the mixture to carbon dioxide and to convert NOx in the mixture to N