Flue gas desulfurization and denitrification

Flue gas desulfurization and denitrification:

In industry, denitration is usually carried out during combustion and desulfurization is carried out after combustion. What does desulfurization and denitrification mean? This issue of Brenda Bian Xiao will tell you. ...

Flue gas desulfurization refers to the removal of sulfide from flue gas.

Flue gas denitrification refers to removing nitrogen oxides from flue gas.

Flue gas desulfurization is generally divided into wet desulfurization, dry desulfurization and semi-dry desulfurization. At present, the commonly used flue gas desulfurization method is SDS dry desulfurization The main process is to send the activated calcium desulfurizer into the silo for temporary storage, and then control the feeder to output an appropriate amount of activated calcium desulfurizer from the variable at the lower part of the silo in combination with the change of flue gas quantity, and send it into the desulfurization reactor through the powder feeding fan, so that the flue gas entering it can be mixed and reacted to remove sulfur and other components in the flue gas.

Flue gas denitrification generally includes selective catalytic reduction flue gas denitrification, selective non-catalytic reduction flue gas denitrification, PNCR polymer flue gas denitrification and other methods. At present, the commonly used flue gas denitration method is PNCR dry molecule denitration, and its main process is to directly spray polymer denitration agent into the furnace through pneumatic conveying and other devices. Under the action of high temperature, the chemical bond between amino and polymer is broken, and a large number of functional groups containing amino are released. The amino functional groups react with nitrogen oxides (nitrogen oxides) in flue gas to remove nitrogen oxides (nitrogen oxides).

Desulfurization and denitrification is a common industrial waste gas treatment process. Here, Bian Xiao only introduces two commonly used desulfurization and denitrification methods. Which technical scheme is adopted specifically needs to be comprehensively designed and used according to the working conditions. I hope my introduction is useful to you.