Field evaluation of METHANE de-NOX at Olmsted Waste-to-Energy facility

Conference · Wed Jan 01 04:00:00 EST 1992

OSTI ID:6834624

Biljetina, R; Abbasi, H A ^[1]; Cousino, M E; Dunnette, R ^[2]

---

1. Institute of Gas Technology, Chicago, IL (United States)
2. Olmsted County, Rochester, MN (United States)

A natural gas injection technology (METHANE de-NOX) for reducing NO[sub x] emissions from municipal waste combustors (MWCS) has been developed in a joint program between the Institute of Gas Technology (IGT), Riley Stoker Corporation (Riley), Olmsted Waste-to-Energy, and Takuma Company, Ltd. The METHANE de-NOX technology offers significant benefits compared to Thermal de-NO[sub x], which is the only NO[sub x] reduction technology that has been commercially employed in the United States to MWCS. Funding for this development was provided by the Gas Research Institute (GRI) and a number of gas utilities. The METHANE de-NOX approach used involves injection of natural gas, together with recirculated flue gases, above the grate to provide oxygen deficient combustion conditions that promote the destruction of NO[sub x], as well as NO[sub x] precursors. Extensive development testing, using both simulated combustion products and actual municipal waste (MW), showed that 50% to 70% NO[sub x] reduction could be achieved. A full-scale METHANE de-NOX system was designed and retrofitted to a 100-ton/day Riley/Takuma mass burn system at the Olmsted County Waste-to-Energy facility for this field evaluation. A flexible system design was chosen to allow testing of key parameters to not only optimize the process for the Olmsted unit, but also acquire design data for its a plication to MWCs of other sizes and designs. Extensive testing was carried out to evaluate the effectiveness of this new technology. This paper concentrates on the METHANE de-NOX system retrofit and the results of the field evaluation tests which demonstrated the reduction of up to 60% in NO[sub x] emissions and up to 50% in CO emissions. Further benefits included a reduction of up to 50% in excess air requirements and furnace efficiency improvements. An assessment of the application potential for this technology to other systems is also presented along with a comparison to Thermal de-NO[sub x].

• Research Organization: Institute of Gas Technology, Chicago, IL (United States)
• Sponsoring Organization: IGT; GRI; Institute of Gas Technology, Chicago, IL (United States); Gas Research Inst., Chicago, IL (United States)
• OSTI ID: 6834624
• Report Number(s): CONF-9201124-1; ON: TI93005397
• Country of Publication: United States
• Language: English

Related Subjects

09 BIOMASS FUELS
092000* -- Biomass Fuels-- Combustion-- (1990-)
095000 -- Biomass Fuels-- Environmental Aspects-- (1990-)
42 ENGINEERING
421000 -- Engineering-- Combustion Systems
AIR POLLUTION ABATEMENT
CHEMICAL REACTIONS
COCOMBUSTION
COMBUSTION
DENITRIFICATION
ENERGY SOURCES
FIELD TESTS
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASEOUS WASTES
GASES
NATURAL GAS
OXIDATION
POLLUTION ABATEMENT
REFUSE DERIVED FUELS
TESTING
THERMOCHEMICAL PROCESSES
WASTES