ULNB upgrade to reduce NOx
Key challenges
To reduce NOx emissions as low as possible with primary measures on a 500MWe coal-fired boiler and enable maximum generation under the Transitional National Plan.
RJM Solution
Design, supply, install supervision, and optimisation of a new set of RJM Ultra-Low NOx burners, as well as new curtain air ports, air ducts and OFA modifications.
Results
Industrial Emissions Directive compliance was met without the need for secondary SNCR or SCR measures. NOx reduced from 460mg/Nm3 to 190mg/Nm3 on full load, allowing increased generation under the plant’s annual NOx bubble.
Northeast Utilities, Schiller Unit 6, New Hampshire
NOx reduction project to meet Phase 1 RACT regulations
Coal
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Northeast Utilities, Norwalk Harbor
Engineer, model and supply new NOx reduction system
Oil
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