The rolling furnace is mainly used for heating the billet, including preheating the billet, directional heating, tempering treatment, etc., in order to improve the plasticity of the steel and reduce the deformation resistance, so that the steel is easy to deform. In the process, some gas is produced.
If gas fuels are used, such as natural gas, blast furnace gas, coke oven gas, producer gas, blast furnace and coke oven mixed gas, etc., the main combustible component of these fuels is hydrocarbons, so a certain amount of carbon dioxide and water vapor will be produced during the combustion process. At the same time, incomplete combustion may also produce carbon monoxide and other toxic gases.
It should be noted that although the steel rolling furnace can use advanced combustion technology and energy-saving measures to improve energy efficiency and reduce environmental pollution, if the operation is improper or the equipment is aging, it may still cause air pollution and have adverse effects on the environment and human health. Therefore, enough attention should be paid to the operation and maintenance of steel rolling heating furnace.
SCR flue gas denitrification technology is an important environmental protection technology for reducing NOx (nitrogen oxides) emissions in steel rolling furnace. Specifically, the rolling furnace adopts the combined process of “medium-high temperature SCR denitration +SDS desulphurization + cloth bag dust removal”. This process first uses waste heat to heat up the flue gas, and then carries out preliminary purification through medium-high temperature SCR denitrification. Next, a sodium-alkali process (such as baking soda) is used for flue spray desulfurization. Finally, the flue gas is further purified by a straight-through bag filter to remove particulate matter. This collaborative treatment technology not only has good economic benefits, but also helps to achieve ultra-low emission control and total amount control of flue gas particles, NOX and SO2 in the steel industry. This not only improves the environment and air quality of steel enterprises and corresponding industrial zones, but also improves the civilized image of the city and promotes the green development of steel enterprises. It is worth noting that SCR technology has a variety of applications in the steel industry, including sintering, pelletizing, coking and other major processes. Compared with other technologies such as AC adsorption catalysis and O3 oxidation co-absorption technology, SCR technology has certain advantages and limitations.
The SCR denitration system independently developed by Green Valley Environmental Protection has independent intellectual property rights and a number of invention patents, and also has a large amount of experience data in the application field, which ensures that the project design is reasonable, the operation is stable and reliable, and provides the company with continuous invention and creation power.
Post time: Nov-11-2023