Introduction to SCR medium temperature denitrification, SCR flue gas denitrification specifications, model parameters

SCR medium temperature denitrificationthat is, selective catalytic reduction technology is a technology used to reduce the emission of nitrogen oxides in flue gas.，the product looks atmospheric.，is based on One-combustion energy saving is carefully developed by One-combustion energy saving combined with advanced technology。

1、Brief introduction of SCR medium temperature denitrification

SCR medium temperature denitrificationdelective catalytic reduction technology is an efficient flue gas denitrification technology.，at runtime,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.。

SCR medium temperature denitrification

2、Structural characteristics of SCR medium temperature denitrification

The SCR medium temperature denitrification has the following structure

1. Flue gas mixing and distribution system

Ensure that the flue gas and reducing agent are fully mixed in the reactor to improve the denitrification efficiency.

2. Temperature control and monitoring

It is used to monitor and control the temperature of the reactor to ensure that the chemical reaction is carried out in the optimal temperature range.

3. control system

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

4. 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.

5. control system

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

SCR medium temperature denitrification

3、Introduction of SCR medium temperature denitrification characteristics

SCR medium temperature denitrification has the following characteristics

1. Small secondary pollution

The by-products produced in the SCR medium temperature denitrification opening process are nitrogen and water vapor, and there is no secondary pollution problem.

2. Strong adaptability

SCR medium temperature denitrification technology can meet the needs of flue gas denitrification under different working conditions and has a wide range of applications.

3. High denitration efficiency

The denitration efficiency of SCR medium temperature denitrification technology can reach more than 90%, and it is a widely used post-combustion denitration technology at present.

4. Stable operation and stability

The technology runs stably and reliably, and is suitable for various scenarios with large changes in flue gas flow, composition and concentration.

5. Environmental protection

The final products of SCR medium temperature denitrification technology are harmless nitrogen and water vapor, which will not cause secondary pollution to the environment.

SCR medium temperature denitrification

4、Functional advantages of SCR medium temperature denitrification

SCR medium temperature denitrifications have the following advantages.

1. Diversity and high efficiency of catalysts

There are many kinds of catalysts used in the SCR medium 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 medium temperature denitrification technology to maintain high efficiency of denitration in a wider temperature range and more complex flue gas conditions.

2. 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 medium 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 medium temperature denitrification technology can also reduce operating costs and improve the economic benefits of enterprises by recycling heat energy.

3. Environmental friendliness

The by-products produced by SCR medium temperature denitrification 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 SCR medium temperature denitrification 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.

4. High efficiency denitration capacity

Gate is famous for its high efficiency of denitration, which can usually reach more than 90% denitration efficiency. This means that the SCR medium temperature denitrification 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 mainly benefits from the promotion of catalyst, which makes the chemical reaction between reductant and NOx more rapid and thorough.

5. Intelligent control and convenience of operation

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

5、SCR medium temperature denitrification function

SCR medium temperature denitrificationmultifunctional, with functions such as Improve working conditions, Promote sustainable development, Improve energy efficiency, environmental protection and Improve working conditions，It has the functions of Promote sustainable development, Meet the requirements of environmental protection, Improve product quality, Flue gas denitrification and environmental protection，has been favored by more and more customers.。

SCR medium temperature denitrification

6、SCR medium temperature denitrification structure composition

The SCR medium temperature denitrification structure is introduced as follows:

1. 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.

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 system

Ensure that the flue gas and reducing agent are fully mixed in the reactor to improve the denitrification efficiency.

4. Reactor

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

5. Temperature control and monitoring system

It is used to monitor and control the temperature of the reactor to ensure that the chemical reaction is carried out in the optimal temperature range.

SCR medium temperature denitrification

SCR medium temperature denitrificationdelective catalytic reduction technology is an efficient flue gas denitrification technology.，Structure consists of control system, Flue gas mixing and distribution system, Catalyst supply system, Catalyst reactor, Temperature control and monitoring system and so on，productThe overall structural design is relatively simple。