Introduction to External denitration system, introduction to SCR flue gas denitrification advantages and characteristics

External denitration systemthat is, selective catalytic reduction technology is a technology used to reduce the emission of nitrogen oxides in flue gas.。

1、Brief introduction of External denitration system

External denitration systemis an efficient, stable and environment-friendly flue gas denitrification technology.，the product looks atmospheric.，is an advanced External denitration system developed by our company in combination with the actual situation of the industry。

External denitration system

2、Structural advantages of External denitration system

The External denitration system has the following structure

1. Reducing agent storage and supply system

Used to store and supply reducing agent (such as ammonia or urea solution) to the reactor.

2. Reducing agent supply

Reducing agents such as liquid pure ammonia or ammonia water (aqueous solution of ammonia) are evaporated and mixed with diluted air or flue gas.

3. Flue gas mixing and distribution

The mixed reducing agent and flue gas are fully mixed in the mixing tube and evenly distributed to the catalyst reactor through the distribution system.

4. Temperature control and monitoring

The temperature in the catalyst reactor is maintained within the optimal reaction temperature range through the temperature control and monitoring system.

5. Catalytic reduction reaction

Under the action of catalyst, the reductant and NOx in flue gas undergo selective catalytic reduction reaction to generate nitrogen and water vapor.

External denitration system

3、External denitration system explanation video

On-site aerial photography of External denitration system。

External denitration system

As you can see from the live video.，Shandong yiran energy-saving environment protection co., ltd is a External denitration system。

4、External denitration system function

External denitration systemit has the functions of Improve energy efficiency, environmental protection, Improve working conditions, Improve energy efficiency and Promote sustainable development，the product looks beautiful.，it is an ideal choice for customers to buy External denitration system。

External denitration system

5、External denitration system use

External denitration systemCommonly used inFlue gas denitrification,environmental protection,Improve product quality,Meet the requirements of environmental protection,Promote sustainable development and so on，Simple structure and reliable operation.，it is usually composed of Flue gas mixing and distribution system, Catalyst supply system, Temperature control and monitoring system, Catalyst reactor and control system，it has the functions of environmental protection, Improve energy efficiency, Improve working conditions, Promote sustainable development and environmental protection，Catalysts are used to promote the selective catalytic reduction reaction between reducing agents (such as ammonia and urea) and NOx in flue gas. Under the action of catalyst, the reductant preferentially reacts with NOx to generate harmless nitrogen and water vapor, but hardly reacts with oxygen in flue gas. This chemical reaction is usually carried out in the temperature range of 200-450℃, and the specific reaction temperature depends on the type of catalyst selected.，is a External denitration system。

External denitration system

External denitration systemat the start of the operation,Ammonia gas or other suitable reducing agent (such as urea aqueous solution) is sprayed into the flue gas upstream of the catalyst at high temperature. Under the action of catalyst, the reducing agent selectively reacts with nitrogen oxides (NOx) in flue gas to generate pollution-free nitrogen and water vapor. Because NH3 is selective, it only reacts with NOx and basically does not react with O2, so this technology is called selective catalytic reduction denitrification.，it has been widely used in Gas power plant, metallurgy, iron and steel plant, building materials, metallurgy and other industries，the advantage is It is famous for its high-efficiency denitration ability, which can usually reach more than 90% denitration efficiency. This means that the External denitration system technology can significantly reduce the concentration of nitrogen oxides (NOx) in flue gas and make it meet strict environmental protection emission standards. This high-efficiency denitration ability is mainly due to the promotion of the catalyst, which makes the chemical reaction between reductant and NOx more rapid and thorough.、The initial investment of technology may be high, but in the long run, its economic feasibility is remarkable. The high-efficiency denitration ability of External denitration system technology can significantly reduce the environmental emission cost of enterprises and avoid fines and legal risks due to illegal emissions. In addition, External denitration system technology can also reduce operating costs and improve the economic benefits of enterprises by recycling heat energy.、The by-products produced by the technology are mainly nitrogen and water vapor, which are harmless to the environment and will not cause secondary pollution. Compared with the traditional wet flue gas denitrification technology, the External denitration system technology does not need to use a lot of water resources and will not produce pollutants such as wastewater, which is more in line with the requirements of environmental protection and sustainable development.、Technology has been developed and applied for many years, and it is mature and stable. The External denitration system has high reliability and stability, and can maintain stable denitrification efficiency under various working conditions. In addition, the External denitration system technology has good adaptability and adjustability, and can be adjusted and optimized according to different flue gas components and emission requirements.、Intelligent control is gradually realized. By integrating advanced control system and sensor technology, the External denitration system can monitor the composition and emission concentration of flue gas in real time, and automatically adjust the injection amount of reductant and the active state of catalyst to ensure the stability and reliability of denitrification efficiency.。