When exhaust gas stream containing NH3 was combusted, NH3 and organic nitrogen compounds are oxidized. NOx and N2O are typically generated as by-products. It is well known that typical oxidation catalysts at low temperature (250 degC) can reduce NOx generation but possibly generate a large amount of N2O generation. (see Graph 1) N-U has developed NHN catalysts which treats NH3 and organic nitrogen gases effectively without any NH3 or other reducing agents injection and minimizes generation of NOx and N2O. (see Graph 2). It is workable for the treatment of high concentration of NH3 up to 1%. In the meanwhile, NHN catalyst does not contain any toxic substances.
Treating Gases
Ammonia, Hydrogen cyanide, Acrylonitrile, Other organic nitrogen compounds(DMF、NMP、Tri-methylamine、etc.)
Catalyst Specification
Catalyst |
Organic Nitrogen Destruction Catalyst, Ammonia Destruction Catalyst (NHN) |
Shape |
Honeycomb Monolith |
Cell Density |
200 cells/inch2 |
Standard Size |
150×150×50tmm |
Standard SV |
3,000~10,000 hr-1 |
Inlet Temperature |
350~400 degC |
Commercial References
Field of Application | Gas composition | Commercial unit |
NH3 stripper(Semiconductor manufacturing process) |
Ammonia |
more than 50 units |
By-passed NH3 from DeNOx equipment |
Ammonia |
Wastewater treatment |
Ammonia |
Chemical industry |
Acrylonitrile |
Coffee beans roasting |
Amino Acid |
Synthetic fiber、Synthetic leather |
DMF |
Electrodeposition coating |
Isocyanate |
Li-Battery |
NMP |
Performance Curve
Graph 1: NH3 Reaction by Typical Oxidation Catalyst

Graph 2: NH3 Reaction by NHN Catalyst

Contact Sales Department
Department |
Environmental Catalyst Div. |
Contact Form |
|
TEL |
81-3-5436-8479 |
FAX |
81-3-5436-8680 |