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Proprietary SNCR Technology Introduced

LP Amina’s new patented SNCR technology provides further NOx pollution reduction

LP Amina’s has developed a new cost-effective method to deliver improved nitrogen oxide (NOx) emission reduction, combining LP Amina’s existing combustion optimization expertise with newly patented selective non-catalytic reduction technology (SNCR).

Fossil fuel power plants seeking to reduce their air pollution emissions have increasingly sought pollution reduction methods which do not require the erection of complex treatment plants. These treatment facilities are most commonly used to treat emissions from coal-fired power plants. Building treatment plants, such as flue gas desulfurization (FGD) towers for sulfur pollution (SOx) and selective catalytic reduction (SCR) for NOx pollution require an investment of millions of dollars (typically 3-10% the cost of the total power plant) and may require substantial site modification, not physically possible at some locations. Many plants now realize that the greatest emissions benefit at the lowest cost can be realized by modification of the existing power plant boiler. Combustion modification of the boiler can reduce NOx emissions with just a small percentage of the investment necessary for an SCR system. Unlike with SCR systems which require ongoing expense for catalysts, ammonia and other supplies as well as additional operation and maintenance personnel, combustion optimization projects result in little if any recurring expense.

LP Amina as a leader in combustion optimization has achieved impressive results for its combustion optimization projects. The recent Yixing and Wang Long projects, both in China, have reduced NOx emissions up to 65%. These projects have increased the plants energy efficiency and have resulted in reduced operating cost. However, for some locations 60% NOx emission reduction is not quite enough. Recognizing the needs of some customers to achieve even greater NOx emission reduction, LP Amina has developed a new method to combine combustion optimization with SNCR technology. LP Amina patent pending SNCR system with combustion optimization can provide Nox reduction in excess of 80% from baseline conditions.

Traditional SNCR designs have received considerable attention as a low cost NOx reduction option requiring far less initial cost than an SCR plant. Unfortunately traditional SNCR projects have often delivered disappointing NOx removal performance. The LP Amina Combustion Optimization/SNCR system was developed to improve on the performance limitations of traditional SNCR systems. According to the LP Amina retrofit design overfired-air injector ports and fuel injector ports are added along all four of the boiler’s walls with two parallel ports just in from the boiler corner.This design reduces the amount of NOx created in combustion. The SNCR effect is then created with liquid aerosol injectors, which spray SNCR droplets from the air injectors ports and reduce NOx pollution even further. The LP Amina dual combustion optimization/SNCR system can be applied to boilers, metallurgical melt furnaces, incinerators and other furnaces.

LP Amina’s new combined combustion optimization/SNCR system is an economical method to reduce NOx emissions 60-80% and represents an important, yet practical contribution to clean combustion technology.

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