What is a SCR low temperature denitrification? Introduction to the principle of SCR flue gas denitrification structure

SCR low temperature denitrificationthe full name is selective catalytic reduction technology, which is an advanced flue gas denitrification technology.，in the course of work,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.，the product looks atmospheric.，be loved by our customers.。

1、Brief introduction of SCR low temperature denitrification

SCR low temperature denitrificationthe full name is selective catalytic reduction technology, which is an advanced flue gas denitrification technology.，multifunctional, with functions such as Improve working conditions, Improve energy efficiency, Improve working conditions, Promote sustainable development and environmental protection，the main features are Promote sustainable development, Less secondary pollution, Mature technology, Strong adaptability and Environmental protection and pollution-free。

SCR low temperature denitrification

2、SCR low temperature denitrification field real shot

Exquisite design, advanced technology and complete sizes and models are available for customers to choose at will.。

SCR low temperature denitrification

Note: All the pictures in this article were taken by One-combustion energy saving manufacturer.。

3、SCR low temperature denitrification advantage

The advantages of SCR low temperature denitrification are as follows:

1. Wide applicability

SCR low temperature denitrification technology is suitable for many industries and processes, such as coal-fired power plants, iron and steel smelting, cement production and so on. These industries will produce a large number of NOx emissions in the production process, and the SCR low temperature denitrification technology can provide effective denitrification solutions for them. In addition, the gate technology can be adjusted and optimized according to different flue gas components and emission requirements to meet different denitration requirements.

2. Diversity and high efficiency of catalysts

There are many kinds of catalysts used in the SCR low temperature denitrification technology, including vanadium-based catalysts and titanium-based catalysts, which can promote the chemical reaction between reductant and NOx at low temperature. At the same time, the active components and carrier materials of the catalyst are constantly being developed and improved to improve its catalytic efficiency and service life. This enables the SCR low temperature denitrification technology to maintain high efficiency of denitration in a wider temperature range and more complex flue gas conditions.

3. economic viability

The initial investment of this technology may be high, but in the long run, its economic feasibility is remarkable. The high-efficiency denitration ability of SCR low temperature denitrification technology can significantly reduce the environmental emission cost of enterprises and avoid fines and legal risks due to illegal emissions. In addition, SCR low temperature denitrification technology can also reduce operating costs and improve the economic benefits of enterprises by recycling heat energy.

4. Mature and stable technology

SCR low temperature denitrification technology has been developed and applied for many years, and the technology is mature and stable. The SCR low temperature denitrification has high reliability and stability, and can maintain stable denitrification efficiency under various working conditions. In addition, the SCR low temperature denitrification technology has good adaptability and adjustability, and can be adjusted and optimized according to different flue gas components and emission requirements.

5. Intelligent control and convenience of operation

The SCR low temperature denitrification has gradually realized intelligent control. By integrating advanced control system and sensor technology, the SCR low temperature denitrification 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.

SCR low temperature denitrification

4、SCR low temperature denitrification structure

The SCR low temperature denitrification structure is introduced as follows:

1. 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.

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. 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.

4. Reactor

It is the core component of SCR low temperature denitrification technology, and it is equipped with catalyst to promote the chemical reaction between reductant and NOx.

5. control system

The whole SCR low temperature denitrification is automatically controlled to ensure the stable operation of the system and achieve the expected denitration effect.

SCR low temperature denitrification

5、SCR low temperature denitrification principle

SCR low temperature denitrificationat the start of the operation,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.，it has the characteristics of Environment friendly, Good selectivity, Mature and stable technology, High denitration efficiency and Stable operation，It is a product series that integrates environmental protection, Promote sustainable development, Meet the requirements of environmental protection, Flue gas denitrification and Improve product quality，is an advanced SCR low temperature denitrification developed by our company in combination with the actual situation of the industry。

SCR low temperature denitrification

SCR low temperature denitrificationthat is, selective catalytic reduction technology is a technology used to reduce the emission of nitrogen oxides in flue gas.，widely used inbuilding materials,iron and steel plant,Gas power plant,metallurgy,cement plant and other industries。