OCR Text |
Show E aa.. )( 0 z HIGH PREHEAT EMISSION PERFORMANCE 1000 r-------------------rn"777771 800 600 400 200 o o 500 1000 PREHEAT, of 1500 PRE-CAAA BACKGROUND • NOx controlled as N02 precursor - Low priority • Few retrofit controls - CA, NY, TX, FL - Boilers, turbines 1800 • New source standards: major sources only • Increasing New Source Review pressure • Control development/commercialization at moderate level 0lI0 ' .7214·1·$ HIGH TEMPERATURE PROCESS CHARACTERISTICS • High temperatures promote thermal NOx • Increasing recuperation/regeneration for efficiency • Oxygen enriched burner markets increasing • CO secondary to NOx 8S CAAA priority • Some process specific air toxics concerns RELEVANT CAAA TITLES • Title I: Ozone Attainment - New/existing source NOx control - Market based trend: offsets/credits • Title III: Air Toxics - Control based approach to HAPs - Evolve from NSPS controls • Title IV: Acid Deposition - Boiler NOx/SOx 2-phase control - Banking/trading • Title V: Permitting - Classify/consolidate permitting requirements - Enhanced monitoring |