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Show WHAT IS THERMAL DeNOx? • £elective lS..on-~atalytic R.eduction (SNCR) Technology for Reducing NOx Emissions • Gas Phase Reaction Between Ammonia and Nitrogen Oxide in Fluegas from Many Fuels • Ammonia Source can be Aqueous or Anhydrous Ammonia • NOx Reduction Occurs in Fluegas Streams Without Use of Catalyst Between 1600 of and 2000 of With NH3 Only Down to 1300 of if Hydrogen Gas Injected with NH3 • Two Reaction Paths* Proceed Simultaneously : NO + NH3 + 02 ==> N2 + H20 NH3 + 02 ==> NO + H20 . (Desired DeN Ox Reaction) (Undesired Reaction) NET EFFECT: Requires Greater than 1 Mole NH3 to reduce 1 Mole NO. • No Measurable effect on CO, C02, SOx, etc .... • THERMAL DeNOx Process is Patented, Engineered, & Licensed by Exxon Research & Engineering Company (* Note: These path equations summarize over 35 chemical reactions and are not meant to show stoichiometric balance) Exxon Research & Engineering Co., P.O. Box 101, Florham Park, N}, 07932. Phone (201) 765.1250 Fax (201) 765.1648 |