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Emission control systemMethods and apparatus utilizing hydrogen peroxide are useful to reduce SOx and mercury (or other heavy metal) emissions from combustion flue gas streams. The methods and apparatus may further be modified to reduce NOx emissions. Continuous concentration of hydrogen peroxide to levels approaching or exceeding propellant-grade hydrogen peroxide facilitates increased system efficiency. In this manner, combustion flue gas streams can be treated for the removal of SOx and heavy metals, while isolating useful by-products streams of sulfuric acid as well as solids for the recovery of the heavy metals. Where removal of NOx emissions is included, nitric acid may also be isolated for use in fertilizer or other industrial applications.
Document ID
20090042937
Acquisition Source
Headquarters
Document Type
Other - Patent
Authors
Parrish, Clyde F.
Chung, J. Landy
Date Acquired
August 24, 2013
Publication Date
September 1, 2009
Subject Category
Chemistry And Materials (General)
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
Patent
US-Patent-7,582,271
Patent Application
US-Patent-Appl-SN-11/040,294
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