Fang Xinlihua Successfully Signed Contract for 15 # Sintering Smoke Denitration Catalyst of Rizhao Iron and Steel
Publishdate：2020-03-31 Views：15
In March 2020, Anhui Fangxin Lihua Environmental Protection Technology Co., Ltd., a wholly-owned subsidiary of Beijing Fangxin Lihua Technology Co., Ltd., successfully signed a procurement contract for low-temperature SCR denitrification catalysts in the sintering flue gas of Rizhao Iron and Steel 15 # 600 ㎡. This project adopts the process of "main exhaust fan+limestone gypsum desulfurization+wet electrostatic precipitator+smoke+whitening hot air furnace heating and heating+low-temperature SCR denitrification". The denitrification adopts the process concept of "medium temperature design and wide temperature operation", that is, the denitrification body and equipment selection is designed according to 280 ℃, and the denitrification operation is operated in the temperature range of 220 ℃ -280 ℃.
As a well-known domestic steel enterprise, the selection of sintering flue gas denitrification process at Rizhao Iron and Steel has considerable reference significance. From early pre desulfurization high-temperature denitrification to post high-temperature denitrification, post medium and low-temperature denitrification, and from the previous use of plate catalysts to the later use of 25 pore honeycomb catalysts, it highlights the prudence of Rizhao Iron and Steel as the owner in process selection. It is necessary to meet the current and future more stringent pollutant emission standards, achieve sustained and stable standard emissions of pollutants, and also consider the energy consumption and secondary investment of equipment operation. How to find a balance point and achieve a win-win situation between environmental protection and efficiency tests the wisdom of managers. After several rounds of inspection and exchange, Rizhao Steel has finally adopted the concept of "medium temperature design and wide temperature operation", which is another engineering practice of this concept after projects such as Tangshan Ruifeng Steel and Songting Steel.
Due to the complex composition of flue gas and strict emission standards, sintering flue gas is a difficult point in non electric flue gas treatment. The temperature required for SCR denitrification is provided by adding gas heating devices and consuming energy. For denitrification, for every 10 ℃ increase in operating temperature, there will be a significant increase in operating energy consumption. Based on this, Fang Xinlihua took the lead in proposing the design concept of "medium temperature design and wide temperature operation" in the industry. When designing the process, the selection design is based on 280 ℃, and the catalyst operating temperature is designed to meet the standard of 180 ℃ -220 ℃. This process design can not only meet the stable emission standards of environmental protection indicators, but also lower the operating temperature according to actual operating conditions to reduce operating costs. According to the design, the central control screen of the system will display the gas consumption values at different denitrification operating temperatures in real time, effectively displaying the operating energy consumption more intuitively.
As a professional research and development manufacturer of non electric low-temperature denitrification catalysts, the company has provided smoke control products and project services to well-known enterprises in non electric sub industries such as steel sintering, pelletizing, coking, garbage incineration, lime kiln, gas boiler, acid washing, papermaking, glass, ceramics, refractory materials, etc. for more than a decade.
In March 2020, Anhui Fangxin Lihua Environmental Protection Technology Co., Ltd., a wholly-owned subsidiary of Beijing Fangxin Lihua Technology Co., Ltd., successfully signed a procurement contract for low-temperature SCR denitrification catalysts in the sintering flue gas of Rizhao Iron and Steel 15 # 600 ㎡. This project adopts the process of "main exhaust fan+limestone gypsum desulfurization+wet electrostatic precipitator+smoke+whitening hot air furnace heating and heating+low-temperature SCR denitrification". The denitrification adopts the process concept of "medium temperature design and wide temperature operation", that is, the denitrification body and equipment selection is designed according to 280 ℃, and the denitrification operation is operated in the temperature range of 220 ℃ -280 ℃.
As a well-known domestic steel enterprise, the selection of sintering flue gas denitrification process at Rizhao Iron and Steel has considerable reference significance. From early pre desulfurization high-temperature denitrification to post high-temperature denitrification, post medium and low-temperature denitrification, and from the previous use of plate catalysts to the later use of 25 pore honeycomb catalysts, it highlights the prudence of Rizhao Iron and Steel as the owner in process selection. It is necessary to meet the current and future more stringent pollutant emission standards, achieve sustained and stable standard emissions of pollutants, and also consider the energy consumption and secondary investment of equipment operation. How to find a balance point and achieve a win-win situation between environmental protection and efficiency tests the wisdom of managers. After several rounds of inspection and exchange, Rizhao Steel has finally adopted the concept of "medium temperature design and wide temperature operation", which is another engineering practice of this concept after projects such as Tangshan Ruifeng Steel and Songting Steel.
Due to the complex composition of flue gas and strict emission standards, sintering flue gas is a difficult point in non electric flue gas treatment. The temperature required for SCR denitrification is provided by adding gas heating devices and consuming energy. For denitrification, for every 10 ℃ increase in operating temperature, there will be a significant increase in operating energy consumption. Based on this, Fang Xinlihua took the lead in proposing the design concept of "medium temperature design and wide temperature operation" in the industry. When designing the process, the selection design is based on 280 ℃, and the catalyst operating temperature is designed to meet the standard of 180 ℃ -220 ℃. This process design can not only meet the stable emission standards of environmental protection indicators, but also lower the operating temperature according to actual operating conditions to reduce operating costs. According to the design, the central control screen of the system will display the gas consumption values at different denitrification operating temperatures in real time, effectively displaying the operating energy consumption more intuitively.
As a professional research and development manufacturer of non electric low-temperature denitrification catalysts, the company has provided smoke control products and project services to well-known enterprises in non electric sub industries such as steel sintering, pelletizing, coking, garbage incineration, lime kiln, gas boiler, acid washing, papermaking, glass, ceramics, refractory materials, etc. for more than a decade.
