Principle and Process of SCR Denitrification in Cracking Furnaces

     Principle and Process of SCR Denitrification for Cracking Furnaces

     For denitrification in cracking furnace boilers and kilns, nitrogen oxides in the flue gas are primarily generated through the oxidation of nitrogen in the air under high-temperature conditions. The resulting NOx pollutants are referred to as thermal NOx. The main denitrification processes for cracking furnaces include SCR, SNCR, SNCR+SCR, and PNCR. Below is an introduction to the principle and process of SCR denitrification for cracking furnaces:

     Through analysis of the properties and characteristics of cracking furnace flue gas, our company has independently developed and explored the use of Selective Catalytic Reduction (SCR) to control NOx in cracking furnace exhaust gas. The principle and process of SCR denitrification for cracking furnaces involve placing the SCR denitrification reactor between the economizer and air preheater of the cracking furnace boiler. The flue gas generated from combustion vertically enters the SCR reactor,

      SCR denitrification for cracking furnaces passes through various layers of catalyst modules, reducing NOx into harmless N2 and H2O. In SCR denitrification technology, the reaction can occur within a temperature range of 300°C to 400°C, achieving a flue gas denitrification efficiency of over 90%. Our company has extensive and mature operational experience in SCR denitrification for large-scale boilers and kiln air volume equipment.