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Dickerson SNCR

Dickerson SNCR. John Sherwell PPRP. SNCR - Selective Non-Catalytic Reduction. NOx control High temp reaction (1,700 – 1,900 o F) Urea reagent CO(NH 2 ) 2 + NO + ½ O 2 -> 2N 2 + CO 2 + 2H 2 O. Help Mirant comply with the NOx requirements of HAA. Hearings held 8/25/08

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Dickerson SNCR

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  1. Dickerson SNCR John Sherwell PPRP

  2. SNCR - Selective Non-Catalytic Reduction NOx control High temp reaction (1,700 – 1,900 oF) Urea reagent CO(NH2)2 + NO + ½ O2 -> 2N2 + CO2 + 2H2O Help Mirant comply with the NOx requirements of HAA

  3. Hearings held 8/25/08 • Expect a proposed order 9/9/2008

  4. Issues Side reaction: NH3 + SO3 + H2O -> (NH4)HSO4 Emitted a PM fine From sulfur in coal From urea decomposition PM fine is regulated under the CAA The low emission rate for this project do not trigger any permitting requirements

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