An engineering and economic evaluation of the methane de-NOX{sup SM} technology

Technical Report · Fri Dec 31 04:00:00 EST 1993

DOI:https://doi.org/10.2172/10177324· OSTI ID:10177324

Abbasi, H A; Khinkis, M J ^[1]; Scherrer, R ^[2]

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1. Institute of Gas Technology, Chicago, IL (United States)
2. Ogden Martin Systems Inc., Fairfield, NJ (United States)

The Institute of Gas Technology (IGT) and Ogden Martin Systems, Inc. (OMS) are conducting joint engineering and economic evaluation of IGT`s METHANE de-NOX{sup SM} technology for its application to new, as well as retrofit, municipal waste combustors (MWCs). It is anticipated that this new technology offers a technically and economically attractive alternative to existing selective noncatalytic reduction (SNCR) systems for new facilities, as well as in retrofit applications. Consequently, IGT and OMS are considering pursuing a long-term demonstration of this technology on an OMS MWC. The METHANE de-NOX approach was developed based on extensive full-scale MWC infurnace characterization and pilot-scale testing using simulated combustion products. The approach involves injection of natural gas, together with recirculated flue gases (for mixing), above the grate to provide oxygen-deficient combustion conditions that promote the destruction of NO{sub x} precursors, as well as NO{sub x}. Extensive pilot-scale testing, using both simulated combustion products and actual municipal waste (MW), showed that significant NO{sub x} reduction could be achieved. The results were used to define the key operating parameters for a field evaluation of the process. 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. The results of the field evaluation tests 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 boiler efficiency improvements. This paper describes the METHANE de-NOX technology and discusses the results to date of the IGT/OMS engineering and economic study. The focus is on the discussion of the benefits and drawbacks of this new technology in comparison with existing SNCR systems.

• Research Organization: Institute of Gas Technology, Chicago, IL (United States)
• Sponsoring Organization: Institute of Gas Technology, Chicago, IL (United States)
• OSTI ID: 10177324
• Report Number(s): CONF-9304162--2; ON: TI94017678
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320604
54 ENVIRONMENTAL SCIENCES
540120
AIR POLLUTION ABATEMENT
CHEMICALS MONITORING AND TRANSPORT
COMBUSTION
COMBUSTION PRODUCTS
COMPARATIVE EVALUATIONS
DEMONSTRATION PROGRAMS
DENITRIFICATION
ENGINEERING
EXPERIMENTAL DATA
FIELD TESTS
FLUE GAS
METHANE
MUNICIPAL WASTE MANAGEMENT
MUNICIPAL WASTES
NATURAL GAS
NITROGEN OXIDES
REDUCTION
SELECTIVE CATALYTIC REDUCTION
STAGED COMBUSTION