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Power Plant SCR Units and Ammonia Safety Measures

From Sensidyne, LP
 

 

Selectrive Catalytic Reduction (SCR) systems will be installed on 100,000 MW of U.S. coal-fired generating capacity by 2004. SCR investment for Nitrogen Oxides (NOx) control will be the largest for any control strategy implemented to date. Many oil and gas-fired generating stations, industrial boilers, co-generation, and combined cycle plants already use SCR or SNCR systems to comply with current and future NOx emission standards.

An SCR system is installed in the flue work, often between the economizer and the air heater. An ammonia injection area is followed by a reactor section downstream, which contains catalyst layers to enhance the NOx reduction. The use of the catalyst means that system will function at much lower flue gas temperatures. Soot-blowers or other cleaning measures are utilized in the reactor, depending upon the degree of dust loading.

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Gas detectors and gas sensors interact with a gas to initiate the measurement of its concentration. The detector or sensor then provides output to an instrument to display the measurements. Search by Specification | Learn more about Gas Detectors and Gas Sensors
Combustion analyzers and flue gas analyzers measure the gas content of emissions in order to monitor the combustion efficiency of fuel-burning equipment. Learn more about Combustion Analyzers
Gas transmitters consist of an enclosure, sensor, and electronics that convert a signal from a gas sensor into an analog output signal (typically 4-20 mA). Search by Specification | Learn more about Gas Transmitters
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Product Announcements
Branch Environmental Corp. - Selective Catalytic Reduction (SCR) Systems
Selective Catalytic Reduction (SCR) uses ammonia injected at elevated temperatures to react with oxides of nitrogen (NOx) in the air or gas. The NOx and ammonia are converted to harmless nitrogen and... (read more)
Branch Environmental Corp. - Selective Catalytic Reduction (SCR) System
Where large volumes must be handled, we can provide a solvent concentration stage using a special media which captures the VOC and then is regenerated. This allows the released VOC gas to be sent to a... (read more)
Branch Environmental Corp. - Wet Scrubbers for Dust, Fumes, Mist...
Branch Environmental Corp. supplies custom built scrubbers and systems for air pollution control. From small units to large custom designed systems, you receive competitive pricing with the highest... (read more)
Bionomic Industries - BIONOxSOLVER™ NOx Scrubbing Solution
BIONOxSOLVER is the first major breakthrough process NOx control chemistry to greatly simplify wet scrubbing system operation and dramatically reduce scrubber system complexity and costs. This special... (read more)
GE ENERGY Filtration Technologies - Powerwave® Acoustic Cleaning Systems
Powerwave acoustic cleaning systems can significantly improve the cleaning of air pollution control equipment, heat transfer surfaces, material handling and storage equipment, and areas of production... (read more)
Kavlico - Kavlico Urea Sensor a Golden Mousetrap Finalist
Kavlico has announced that its Urea-Dosing Sensor was named finalist in the Electronics Section, Sensors & Vision subcategory of the Design News Golden Mousetrap Awards 2009. Kavlico's urea-air... (read more)
Bryan Steam, LLC. - Ultra Low Nox Water and Steam Boilers
Ultra Low Nox Boiler/Burner design for Bryan Steam Compliance+® Series hot water and steam boilers. (read more)
 
Topics of Interest
selective catalytic reduction (SCR) Siemens, Werner von selective catalytic reduction (SCR) Envir onment. a process installed downstream of a boiler, involving a catalytic reactor through which... (Read More)
Selective Catalytic Reduction (SCR) is the dominant solution for meeting future NOx reduction regulations for heavy-duty diesel powertrains. SCR systems benefit from closed-loop control if an... (Read More)
Although the technologies listed in this chapter might sound new, most have been around for a long time. What's driving them are environmental and efficiency issues. As they have become increasingly... (Read More)
seeding, inoculation septic system seeding, inoculation Bringing in suitable bacteria and other organisms to help biochemical reactions. The return of activated sludge is one example. To start... (Read More)
Digital control systems and advanced technologies like selective catalytic reduction (SCR) and low-NOx burners are commonly used in the power industry. Yet poor or inconsistent damper actuation... (Read More)
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