The application of desulfurization and denitrification SNCR technology in the environmental protection industry is mainly reflected in the removal of sulfur dioxide and nitrogen oxides from industrial flue gas to reduce air pollution. SNCR technology, also known as selective non catalytic reduction, is a technology used for removing nitrogen oxides. Its characteristics include low product price, simple layout, small footprint, and low construction and operating costs. However, SNCR technology is generally suitable for temperatures ranging from 850 ℃ to 1150 ℃, which means it has specific requirements for the temperature range, and there are problems with downstream equipment being prone to blockage and corrosion. The denitrification efficiency is between 30% and 80%, and the amount of ammonia escaping is relatively large.
Despite the limitations mentioned above, SNCR technology is still an effective denitrification method, especially when there are strict limitations on cost and equipment complexity. In addition, SNCR technology is suitable for various working conditions and environments. Although its denitrification efficiency may not be as high as other more complex technologies, its cost-effectiveness and simplicity make it a feasible choice in certain application scenarios.
In practical applications, SNCR technology is widely used in industrial flue gas denitrification such as thermal power plants, steel mills, cement plants, and incineration plants. For example, in the purification of waste to energy incineration flue gas, SNCR technology reduces nitrogen oxide emissions by injecting reducing agents such as urea or ammonia into high-temperature flue gas, reacting with nitrogen oxides to generate nitrogen and water.
Overall, although SNCR technology has its limitations, its low cost and high efficiency make it a feasible denitrification technology in specific application scenarios. With the increasingly strict environmental regulations and continuous technological progress, SNCR technology is expected to play a greater role in the environmental protection industry.
Simple operation: SNCR denitrification process does not require a complex control system and is easy to maintain and manage.
Low investment cost: Due to the simple equipment and short construction period, the investment cost of SNCR denitrification process is relatively low.
Wide application range: Applicable to various types of combustion boilers and industrial furnaces, especially for the transformation of old equipment.
Significant nitrogen oxide emission reduction effect: A removal rate of 70%-90% can be achieved.
Environmentally friendly: The byproducts are nitrogen and water vapor, no secondary pollution, and meet environmental protection requirements.
In the chemical industry, SNCR technology is suitable for large-scale power plant boilers, especially for chemical production processes that need to reduce nitrogen oxide emissions. By adopting SNCR technology, chemical companies can effectively reduce nitrogen oxide emissions, improve environmental protection standards, reduce operating costs, and improve economic benefits.
