Forging furnace is widely used in automobile manufacturing, aerospace, engineering machinery, metallurgical equipment, petrochemical, military and other industries. These industries require forging processing to ensure high strength and wear resistance of parts. Forging furnaces have been widely used in many industries because of their key role in improving the performance of metal components, and with the advancement of technology and the growth of market demand, the forging furnace industry has shown a continuous growth trend globally, especially in China.
Selective catalytic reduction technology is a method of denitrification in the flue gas after the furnace. Under the action of a certain temperature and catalyst, the reducing agent NH₃ is used to selectively reduce the nitrogen oxides and NOx in the flue gas into non-toxic and pollution-free nitrogen N₂ and water H₂ ₃. During this process, the activation energy of the reaction is reduced under the action of the catalyst. The reaction temperature is reduced to 150-450℃, which is suitable for the actual temperature range of coal-fired power plants.
In SCR denitrification systems, commonly used reducing agents include ammonia NH₃ and urea CO(NH₂)₂ These reducing agents need to be evenly injected into the flue gas containing NOx in a specific manner. Ammonia can be injected as a gas or liquid, whereas urea is usually injected as an aqueous solution and quickly breaks down to form ammonia at high temperatures. The injected reducing agent and NOx in the flue gas need to be fully mixed to ensure the efficiency and effect of the subsequent catalytic reaction, and the uneven mixing will lead to the reduction of denitrification efficiency and may even produce side reactions, so this step is crucial.
The mixture of uniform flue gas and reducing agent then flows through the catalyst layer, under the action of a certain temperature and catalyst, NOx and reducing agent react, is reduced to N₂ and H₂O, the catalyst is usually made of vanadium titanate, tungstate or molybdate and other materials, these materials can effectively promote the reaction, reduce the temperature and energy required for the reaction.
SCR denitrification technology generally NOx removal efficiency can be maintained at 70-90%, is an efficient flue gas denitrification technology, with the development of denitrification technology, selective catalytic reduction SCR denitrification technology, provides an efficient and reliable nitrogen oxide emission reduction method, through the technology can be NOx into harmless nitrogen and water vapor, effectively control nitrogen oxide emissions.
Post time: Jan-15-2025