New trends in environmental protection in the grain processing industry: SCR denitrification solutions for flue gas treatment

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Grain processing enterprises play an important role in economic and social development, and are the most important link in the agricultural industry chain, which plays an important role in improving agricultural output value and increasing farmers' income. The importance of grain processing enterprises is not only reflected in the economic level, but also involves social stability, environmental protection and international cooperation. However, grain processing enterprises may produce nitrogen oxides in the drying and other links, how to deal with it?.

Food drying is an important link to ensure the storage safety and quality of food, in this process, the need to use hot blast stove and other equipment, in the process of burning fuel, may produce a variety of pollutants including nitrogen oxides, which poses a potential threat to the environment and human health. In the combustion process may produce incomplete combustion of solid particles; During the combustion process, nitrogen and oxygen in the air react at high temperatures to form nitrogen oxides, which may cause harm to the environment and human body.

In order to reduce the emission of pollutants, grain processing enterprises can take the following measures:

1, by optimizing the combustion process, improve the combustion technology, reduce the generation of nitrogen oxides;

2, effectively remove particles in the smoke;

3, through selective reduction (SCR), nitrogen oxides are converted into harmless substances to achieve ultra-low emissions, while ensuring that ammonia escape data is less than 3ppm. It can meet various working conditions, and the denitrification efficiency reaches more than 95% of the denitrification activity efficiency.

While promoting the mechanization of grain drying and improving the drying capacity of grain producing areas, the state also pays attention to environmental protection and energy-saving upgrading to ensure that emissions meet standards. Through the adoption of energy-saving green environmental protection technology and equipment, the use of heat pumps, electric heating, biomass combustion, natural gas and solar energy and other heat sources, as well as the existing food dryers for environmental protection and energy-saving upgrading, efforts to reduce the emission of pollutants, to ensure food security and environmental health.