The successful application of Fangxin Lihua ultra-low temperature denitrification catalyst in the ultra-low emission project of Taiyuan Iron and Steel Group's rotary kiln
Publishdate：2021-02-18 Views：17
The 1x600t/d light burned dolomite rotary kiln ultra-low emission project of the Composite Materials Plant of the Mining Branch of Taiyuan Iron and Steel Group Co., Ltd., designed by Shanxi Taiyuan Iron and Steel Engineering Technology Co., Ltd., was officially put into operation on October 23, 2020. Its denitrification system uses the latest 150 ℃ ultra-low temperature denitrification catalyst developed and produced by Beijing Fangxin Lihua Technology Co., Ltd. At present, the system has been running steadily for 4 months and can achieve nearly zero emissions.
The main design parameters for the inlet flue gas of the denitrification system in this project are: flue gas volume of 95000 Nm3/h, flue gas temperature at the denitrification inlet ≥ 150 ℃, NOx ≤ 600mg/Nm3, SO2 ≤ 20mg/Nm3, and dust ≤ 10mg/Nm3. After operation, the flue gas temperature is 150-160 ℃, and the NOx in the outlet flue gas remains below 50mg/Nm3 (design value 150 mg/Nm3), which can achieve near zero emissions. The denitrification control ability is strong, and the ammonia escape is less than 2.28mg/Nm3. The resistance of the two layers of catalyst is less than 228Pa, and all indicators meet and are superior to the design indicators. The smooth implementation of this project has achieved catalytic removal of NOx under ultra-low temperature conditions, and will play an important demonstration role in non electric fields such as steel sintering and lime kilns.
The R&D team of He Hong from Beijing Fangxin Lihua Technology Co., Ltd. has been engaged in research on low-temperature denitrification technology for a long time. Different production processes and formulas are adopted according to the characteristics of flue gas in different industries to solve the problem of NOx removal under low-temperature sulfur-containing conditions. The low-temperature denitrification catalyst produced by the company has been successfully applied in two "world first sets of devices", namely:
In 2015, it was used in the world's first coke oven flue gas low-temperature denitrification device - the coke oven flue gas purification facility of Baosteel Zhanjiang Iron and Steel Coking Project. In 2018, it was used in the world's first sintering flue gas 180 ℃ low-temperature SCR denitrification project - Tangshan Ruifeng Iron and Steel Group Co., Ltd. 1 # and 3 # sintering machine flue gas 180 ℃ low-temperature SCR denitrification. With the deepening of ultra-low emissions in the non electric industry, the R&D team of He Hong has continuously experimented and solved problems, continuously reducing the applicable temperature of the catalyst and creating multiple application achievements. The successful operation of ultra-low temperature catalysts in Taiyuan Iron and Steel rotary kilns marks a new level of flue gas treatment in China.
Ultralow Emission System of Light Burnt Dolomite Rotary Kiln in Composite Materials Plant of Mining Branch of Taiyuan Iron and Steel Group Co., Ltd
The 1x600t/d light burned dolomite rotary kiln ultra-low emission project of the Composite Materials Plant of the Mining Branch of Taiyuan Iron and Steel Group Co., Ltd., designed by Shanxi Taiyuan Iron and Steel Engineering Technology Co., Ltd., was officially put into operation on October 23, 2020. Its denitrification system uses the latest 150 ℃ ultra-low temperature denitrification catalyst developed and produced by Beijing Fangxin Lihua Technology Co., Ltd. At present, the system has been running steadily for 4 months and can achieve nearly zero emissions.
The main design parameters for the inlet flue gas of the denitrification system in this project are: flue gas volume of 95000 Nm3/h, flue gas temperature at the denitrification inlet ≥ 150 ℃, NOx ≤ 600mg/Nm3, SO2 ≤ 20mg/Nm3, and dust ≤ 10mg/Nm3. After operation, the flue gas temperature is 150-160 ℃, and the NOx in the outlet flue gas remains below 50mg/Nm3 (design value 150 mg/Nm3), which can achieve near zero emissions. The denitrification control ability is strong, and the ammonia escape is less than 2.28mg/Nm3. The resistance of the two layers of catalyst is less than 228Pa, and all indicators meet and are superior to the design indicators. The smooth implementation of this project has achieved catalytic removal of NOx under ultra-low temperature conditions, and will play an important demonstration role in non electric fields such as steel sintering and lime kilns.
The R&D team of He Hong from Beijing Fangxin Lihua Technology Co., Ltd. has been engaged in research on low-temperature denitrification technology for a long time. Different production processes and formulas are adopted according to the characteristics of flue gas in different industries to solve the problem of NOx removal under low-temperature sulfur-containing conditions. The low-temperature denitrification catalyst produced by the company has been successfully applied in two "world first sets of devices", namely:
In 2015, it was used in the world's first coke oven flue gas low-temperature denitrification device - the coke oven flue gas purification facility of Baosteel Zhanjiang Iron and Steel Coking Project. In 2018, it was used in the world's first sintering flue gas 180 ℃ low-temperature SCR denitrification project - Tangshan Ruifeng Iron and Steel Group Co., Ltd. 1 # and 3 # sintering machine flue gas 180 ℃ low-temperature SCR denitrification. With the deepening of ultra-low emissions in the non electric industry, the R&D team of He Hong has continuously experimented and solved problems, continuously reducing the applicable temperature of the catalyst and creating multiple application achievements. The successful operation of ultra-low temperature catalysts in Taiyuan Iron and Steel rotary kilns marks a new level of flue gas treatment in China.
Ultralow Emission System of Light Burnt Dolomite Rotary Kiln in Composite Materials Plant of Mining Branch of Taiyuan Iron and Steel Group Co., Ltd
