NH3 Destruction Catalyst

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