SOx-NOx-Rox Box{trademark} flue gas clean-up demonstration. Final report

Technical Report · Fri Sep 01 04:00:00 EDT 1995

DOI:https://doi.org/10.2172/171277· OSTI ID:171277

Babcock and Wilcox`s (B and W) SOx-NOx-Rox Box{trademark} process effectively removes SOx, NOx and particulate (Rox) from flue gas generated from coal-fired boilers in a single unit operation, a high temperature baghouse. The SNRB technology utilizes dry sorbent injection upstream of the baghouse for removal of SOx and ammonia injection upstream of a zeolitic selective catalytic reduction (SCR) catalyst incorporated in the baghouse to reduce NOx emissions. Because the SOx and NOx removal processes require operation at elevated gas temperatures (800--900 F) for high removal efficiency, high-temperature fabric filter bags are used in the baghouse. The SNRB technology evolved from the bench and laboratory pilot scale to be successfully demonstrated at the 5-MWe field scale. This report represents the completion of Milestone M14 as specified in the Work Plan. B and W tested the SNRB pollution control system at a 5-MWe demonstration facility at Ohio Edison`s R.E. Burger Plant located near Shadyside, Ohio. The design and operation were influenced by the results from laboratory pilot testing at B and W`s Alliance Research Center. The intent was to demonstrate the commercial feasibility of the SNRB process. The SNRB facility treated a 30,000 ACFM flue gas slipstream from Boiler No. 8. Operation of the facility began in May 1992 and was completed in May 1993. About 2,300 hours of high-temperature operation were achieved. The main emissions control performance goals of: greater than 70% SO{sub 2} removal using a calcium-based sorbent; greater than 90% NOx removal with minimal ammonia slip; and particulate emissions in compliance with the New Source Performance Standards (NSPS) of 0.03 lb/million Btu were exceeded simultaneously in the demonstration program when the facility was operated at optimal conditions. Testing also showed significant reductions in emissions of some hazardous air pollutants.

• Research Organization: Babcock and Wilcox Co., Alliance, OH (United States); Ohio Coal Development Office, Columbus, OH (United States); Electric Power Research Inst., Palo Alto, CA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States); Ohio State Government, Columbus, OH (United States); Electric Power Research Inst., Palo Alto, CA (United States)
• DOE Contract Number: FC22-90PC89656
• OSTI ID: 171277
• Report Number(s): DOE/PC/89656--T1; ON: DE96003839
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
20 FOSSIL-FUELED POWER PLANTS
BAGHOUSES
COAL
COMBINED SOXNOX PROCESSES
COMPILED DATA
DEASHING
DEMONSTRATION PROGRAMS
DENITRIFICATION
DESULFURIZATION
ECONOMICS
FABRIC FILTERS
FIELD TESTS
FLUE GAS
FLY ASH
FOSSIL-FUEL POWER PLANTS
MARKET
MINERALS
NITROGEN OXIDES
PERFORMANCE TESTING
POLLUTION CONTROL EQUIPMENT
PROGRESS REPORT
SODIUM CARBONATES
SORBENT INJECTION PROCESSES
SULFUR DIOXIDE
US CLEAN COAL TECHNOLOGY PROGRAM