Patent ID: 6117403
Filing Date: 2000-09-12
Classification: B01D,B03C,C01B,C01G,F01N,F23J,Y02A,Y02T

Abstract:
A process for removing particulate, Hg, NOx, and SO.sub.2 emissions from a flue gas stream and collecting the resulting acids for industrial use comprising the steps ofa. oxidizing Hg, NOx and SOx in a flue gas stream using an electrical converting apparatus to HgO, HNO.sub.3 and H.sub.2 SO.sub.4 ;b. collecting particulate emissions, HgO, NO.sub.2, SO.sub.2, HNO.sub.3, and H.sub.2 SO.sub.4 in a wet electrostatic precipitator (ESP), forming a mixture;c. separating the particulate emissions and HgO from the mixture; andd. processing the mixture by separating HNO.sub.3 and H.sub.2 SO.sub.4 from each other and concentrating HNO.sub.3 and H.sub.2 SO.sub.4, and thereby removing particulate, Hg, NOx, and SO.sub.2 emissions from the flue gas stream and producing acids for industrial use.