Barrier discharge conversion of SO.sub.2 and NOx to acids
AssigneeZero Emissions Technology Inc.
InventorsFrancis R. Alix, S. Edward Neister, Christopher R. McLarnon
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Abstract
A process and apparatus for reducing particulate, nitrogen oxides ("NOx"), sulfur dioxide ("SO.sub.2 "), and mercury ("Hg") emissions from the combustion exhaust of fossil fuel fired plants while producing an end product that is commercially useful, comprising the steps of oxidizing Hg, NOx and SO.sub.2 using a barrier, pulse, corona, or electron beam electrical discharge apparatus to produce HgO and the acids HNO.sub.3 and H.sub.2 SO.sub.4, collecting the HgO, acids and particulates in a wet ESP, and separating the particulates from the collected acid mixture, then separating and concentrated the acids for industrial use.
Claims8
A process for removing particulate, Hg, NOx, and SO.sub.2 emissions from a flue gas stream and collecting acids for industrial use comprising the steps of
- a. 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, said converting apparatus comprising a barrier discharge source;
- 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, forming a mixture;
- c. separating the particulate emissions and HgO from the mixture;
- and
- d. 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.
Dependencies are inferred from the claim text.