DNT Selective Non-Catalytic Reduction

Selective Non-Catalytic NOx
Reduction (SNCR) Systems

Selective Non-Catalytic Reduction (SNCR) is a proven method of controlling nitrogen oxide emissions (NOx) from Incinerators, Industrial Boilers, Utility Boilers, Process Plant Heaters, Paper Mill Recovery Boilers, Cement Kilns, CPI Process Exhausts. The method can use either urea or ammonia and does not require a catalyst. DNT has experience and track record at 30+ units.

Can continuously achieve 40-70% NOx reduction in Industrial Applications and is generally considered the most cost effective technique for achieving the first increment of NOx reduction. Installed cost is approximately $5 per kW gross heat input.

DNT knows where, how, and how much reagent to inject into your Process.
The data proves that DNT's system uses less reagent than the competition's - which also means that ammonia slip is less as well.
DNT's design is protected by US and International Patent Law and is covered by a broad Intellectual Property Infringement Defense and Damages Insurance policy.

DNT has impressive experience with both ammonia an urea-based systems. DNT's Urea-Based system is Patent-Pending and INSURED. This Intellectual Property Insurance is extended to DNT's customers, listed as Additional Insured, and covers Litigation Expense and Damages.

The liquid reagent is received, stored, and processed in "Standard" design modules, prefabricated to the maximum extent possible. Installation is routine and is often managed by Plant or Corporate personnel. Provided with or without the PLC of your choice. Simple and Efficient.

The key component is the injection nozzle. DNT's Version 3 is now in operation at several facilities - as part of DNT systems or OEM replacement. The Version 3 injector doesn't clog internally, lasts longer in this brutal environment (ultra-high temperatures with high acid gas/particulate concentrations), and atomizes/distributes the reagent better than the Competition's.

Typically the range of temperature for this reaction is 1600-2100°F. SNCR is an ideal retrofit technology and is compatible with other techniques (i.e., low-NOx burners, OFA, FGR, gas reburning, etc.) as part of a Combination Technology Approach to even higher NOx reduction.

Selective Catalytic Reduction may be used in any industry with effluent gas at sufficient temperature and residence time such as Power, Petrochemical, Steel, Metal production, Pulp and Paper, Cement, Waste to Energy, Glass, Nitrous Acid Production etc.