Tunnel kiln flue gas denitrification technology – reduce nitrogen oxide emissions

   In industrial production, especially in the building materials industry, tunnel kiln has become the key equipment for its efficient production, tunnel kiln will produce a large amount of nitrogen oxides (NOx) during the roasting process, but the production of these gases not only destroys the ozone layer, but also produces the formation of particulate matter, which poses a danger to human health, and is one of the main factors leading to haze. It can also lead to soil acidification and water eutrophication problems, nitrogen oxides can also cause irritation and corrosion of lung tissue, and health problems such as pulmonary edema. In addition to the production of nitrogen oxides and particulate matter, the flue gas of tunnel kiln also emits carbon dioxide, which leads to global warming and affects the ecological balance. In order to reduce the emission of these pollutants, tunnel kiln needs to take effective environmental protection measures to reduce the emission of pollutants and reduce the impact on the environment.

   Tunnel kiln flue gas denitrification technology is mainly selective catalytic reduction technology (SCR denitrification technology), this technology is by converting the nitrogen oxides in the flue gas into nitrogen and water vapor, so as to reduce environmental pollution, this method denitrification efficiency is high, but the cost is high, the need to replace the catalyst regularly.

   In order to ensure the efficient operation of the flue gas of the tunnel kiln, the pre-treatment system, temperature control, system integration and monitoring and control need to be considered during the system design process. After effective dust removal and desulphurization pretreatment, it can ensure the operation of subsequent denitration equipment and improve the overall treatment efficiency; In the process of denitration reaction, usually need to be carried out in a certain temperature window, through the heat exchanger or other temperature control equipment to adjust the flue gas temperature; Various equipment and treatment designs need to be integrated to ensure that the equipment works together to achieve the best denitration effect; By adopting advanced monitoring system and automatic control scheme, the system can run stably.

   With the increasingly strict environmental regulations and continuous progress of technology, tunnel kiln flue gas treatment in the field of industrial environmental protection occupies an important position, through the effective implementation of advanced denitrification system, can reduce nitrogen oxide emissions, reduce environmental pollution, environmental protection has this important significance.