Staged NO[sub x] control seeks to avoid full-scale SCR

Journal Article · Wed Sep 01 04:00:00 EDT 1993 · Power; (United States)

OSTI ID:5819603

Collins, S

This article reports that San Diego Gas and Electric Co. (SDG and E) recently completed the third phase of a unique staged NO[sub x]-reduction system demonstration. The system is installed at the utility's 110-MW Encina station Unit 2, a balanced-draft, gas/oil-fired boiler supplied by Babcock and Wilcox Co., Barberton, Ohio. The new system combines urea-based selective non-catalytic reduction (SNCR) and two stages of ammonia (NH[sub 3])-based selective catalytic reduction (SCR). The SCR system combines an in-duct catalyst module and two parallel, catalyst-coated air heaters. Overall NO[sub x] reductions up to 91% at low loads and 72% at full load have been achieved to date.

• OSTI ID: 5819603
• Journal Information: Power; (United States), Journal Name: Power; (United States) Vol. 137:9; ISSN 0032-5929; ISSN POWEAD
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200202* -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
AIR POLLUTION CONTROL
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
DEMONSTRATION PLANTS
EQUIPMENT
FOSSIL-FUEL POWER PLANTS
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
POWER PLANTS
REDUCTION
THERMAL POWER PLANTS