Catalyst

Characteristics of common types of scr denitrification

SCR Catalyst

Low temp

Medium temp

High temp

Catalyst Type

CuO-SCR

VWT-SCR

Fe-Zeolite

Heat resistance

180-500

200-450

350-550

Optimal temp

200-280

280-420

400-530

Sulfur resistance

Low

High

Fuel sulphur content

25ppm or tail gas containing sulfur 2ppm

Aging resistance

High

Lower

High

Maximum DeNOx efficiency

98%

98%

98%

Reaction equation

CO(NH2)2 + H2O → 2NH3 + CO2

8NH3 + 6NO2 → 7N2 + 12H2O

4NH3 + 4NO +  O2 → 4N2+6H2O

2NH3 + NO + NO2 → 2N2+3H2O

Catalyst

Catalyst selection: Customers can choose different types and formulations of
catalysts according to different application scenarios.