Selective Non-Catalytic Reduction (SNCR) for Cost Effective NOx Control

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In certain applications, MEGTEC’s selective non-catalytic reduction (SNCR) technology can be deployed as a relatively low capital cost solution. Our SNCR technology utilizes custom-designed Turbotak atomizing nozzles to inject ammonia or urea solutions directly into the hot gas to chemically reduce NOx to nitrogen and water. In applications where site specific performance data is necessary, we can conduct a full-scale demonstration of the effectiveness of an SNCR solution. We offer pilot testing at your facility to determine the feasibility of SNCR for NOx emissions control. Urea and ammonia injection testing is conducted to evaluate the best choice of reagent for your process, proper equipment sizing for full-scale installation, and injection locations.

We continue to expand our database in chemical production applications such as glass and carbon black manufacturing through full-scale demonstrations. Our goals are to maximize NOx control performance while optimizing chemical utilization with low reagent consumption and the lowest levels of reagent slip. We utilize both predictive and scale modeling techniques to assure optimum gas flow distribution to achieve this goal.

Selective non-catalytic reduction (SNCR) is a proven method for controlling nitrogen oxide (NOX) emissions by injecting an aqueous ammonia or urea solution into the hot gas stream, where it reacts with nitrogen oxides to produce harmless by-products.

NOX emissions are effectively reduced using B&W MEGTEC SNCR systems featuring high efficiency, and wear — and plug-resistant Turbotak nozzles. These systems optimize drop size and spray coverage to reduce NOX and reagent consumption.

SNCR systems from B&W MEGTEC precisely control the injection rate to meet requirements of 60 percent, to as high as 90 percent reduction of NOX, with minimal ammonia slip. These systems can be used in all processes requiring NOX control given the correct temperature and residence time.

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Additional features and benefits include:

  • Rugged high-temperature design delivers a broad operating range
  • Controlled dropsize and spray coverage promotes high-efficiency NOX control
  • Custom designed and optimized
  • New systems and retrofitting existing systems offer production and capital flexibility
  • Easy and cost-effective system integration with the existing process minimizes downtime
  • Low capital cost and minimal impact to process
  • No catalyst bed required, which helps reduce overall costs

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  • System design and engineering
  • Nozzles and lances
  • Unloading stations and handling equipment
  • Tanks
  • Pumping, metering control, and transfer skids
  • Mixing and dilution controls
  • Headers
  • Programming/PLCs
  • Installation and startup
  • Service and technical support

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B&W MEGTEC offers pilot testing at your facility to determine the feasibility of SNCR for the control of NOX emissions. Testing can be conducted using urea and ammonia injection to evaluate the best choice of reagent for your process, equipment sizing for full-scale installation, and injection location. Equipment provided for performance testing includes injection nozzles, pump skid, and controls.

We continue to expand our experience in chemical production applications, such as glass and carbon black manufacturing, through full-scale demonstrations. Our goals are to maximize NOX control performance while optimizing chemical utilization with low ammonia consumption and the lowest levels of ammonia slip. We utilize both predictive and scale modeling techniques to optimize gas flow distribution to achieve this goal.

B&W MEGTEC also supplies selective catalytic reduction (SCR) for high-performance NOX control.

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