Pilot-scale evaluation of H2O2 injection to control to NOx emissions

    Authors

    M. M. Collins; C. D. Cooper; J. D. Dietz; C. A. Clausen;L. M. Tazi

    Comments

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    Abbreviated Journal Title

    J. Environ. Eng.-ASCE

    Keywords

    HYDROGEN-PEROXIDE; OXIDATION; Engineering, Environmental; Engineering, Civil; Environmental Sciences

    Abstract

    Nitric oxide (NO) in combustion flue gasses can be converted to higher oxidation states by the injection of aqueous solutions of hydrogen peroxide (H2O2) into the hot flue gases. The NO is oxidized to NO2, HNO2, and HNO3, which can then be removed in a wet scrubber. A pilot plant system that was designed, constructed, and operated at Kennedy Space Center confirmed previous results that H2O2 is very effective at oxidizing NO; conversions of NO above 90% were obtained at temperatures of about 500 degreesC (930 degreesF) using mole ratios of H2O2:NOx slightly above 1.0. The mole ratios of H2O2/NOx needed to obtain high conversions of NO were significantly lower in the pilot plant that they had been in previous laboratory studies. demonstrating that this process can be an economically feasible method for NO, control. The position of the injector and the type of atomization were very important to the efficient utilization of peroxide. When SO2 was present in the flue gas, both NO and SO2 were oxidized without increasing the demand for peroxide.

    Journal Title

    Journal of Environmental Engineering-Asce

    Volume

    127

    Issue/Number

    4

    Publication Date

    1-1-2001

    Document Type

    Article

    Language

    English

    First Page

    329

    Last Page

    336

    WOS Identifier

    WOS:000167714700008

    ISSN

    0733-9372

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