Development of advanced NO sub x control concepts for coal-fired utility boilers

CombiNO{sub x} is a NO{sub x} reduction process which incorporates three different NO{sub x} control technologies: reburning, selective non-catalytic reduction (SNCR), and methanol injection. Gas reburning is a widely used technology that has been proven to reduce NO{sub x} up to 60% on full-scale a...

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Bibliographic Details
Main Authors: Evans, A., Newhall, J., England, G., Seeker, W.R.
Language:unknown
Published: 2008
Subjects:
20 FOSSIL-FUELED POWER PLANTS
FLUE GAS
AIR POLLUTION ABATEMENT
NITROGEN OXIDES
BOILERS
METHANOL
NITROGEN DIOXIDE
PROGRESS REPORT
REDUCTION
SCRUBBING
STAGED COMBUSTION
SULFUR DIOXIDE
UREA
ALCOHOLS
AMIDES
CARBONIC ACID DERIVATIVES
CHALCOGENIDES
CHEMICAL REACTIONS
COMBUSTION
DOCUMENT TYPES
GASEOUS WASTES
HYDROXY COMPOUNDS
NITROGEN COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
POLLUTION ABATEMENT
SULFUR COMPOUNDS
SULFUR OXIDES
THERMOCHEMICAL PROCESSES
WASTES
Carbonic acid
Online Access:http://www.osti.gov/servlets/purl/7074968
https://www.osti.gov/biblio/7074968
https://doi.org/10.2172/7074968
Description
Summary:CombiNO{sub x} is a NO{sub x} reduction process which incorporates three different NO{sub x} control technologies: reburning, selective non-catalytic reduction (SNCR), and methanol injection. Gas reburning is a widely used technology that has been proven to reduce NO{sub x} up to 60% on full-scale applications. The specific goals of the CombiNO{sub x} project are: 70% NO{sub x} reduction at 20% of the cost of selective catalytic reduction; NO{sub x} levels at the stack of 60 ppm for ozone non-attainment areas; Demonstrate coal reburning; Identify all undesirable by-products of the process and their controlling parameters; Demonstrate 95% N0{sub 2} removal in a wet scrubber. Before integrating all three of CombiNO{sub x}'s technologies into a combined process, it is imperative that the chemistry of each individual process is well understood. Pilot-scale SNCR tests and the corresponding computer modeling were studied in detail and discussed in the previous quarterly report. This quarterly report will present the results obtained during the pilot-scale advanced reburning tests performed on EER's Boiler Simulation Facility (BSF). Since methanol injection is a relatively new NO{sub x} control technology, laboratory-scale tests were performed to better understand the conditions at which methanol is most effective. The experimental set-up and results from these tests will be discussed.

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