NCR process characteristics:

NOx denitrification rate is low, only 25 - 40%

Because the SO3 can not increase the SCR to relax the conditions to relax NH3

For multi-layer injection, the control system is suitable for the following load and temperature capability

The project cost is low, the area is small, it is suitable for the old factory reconstruction, the new furnace, such as according to the boiler design to cooperate with, the efficiency will be higher.

Pre injection subsystem of SNCR furnace of boiler:

The pre furnace injection system is divided into 4 layers, from bottom to top, which are labeled as first jet, second jet and third.

Jet layer, fourth jet. Each spray layer is composed of a urea solution, a vapor channel and a plurality of spray gun. Among them, first, 2, 3, there are 14 single layer of the gun; the fourth layer has a single layer of 7 guns. The arrangement of the spray gun is located near the furnace break angle.