Selective Catalytic Reduction (SCR) is the process of NOx reduction, or DeNOx, that occurs when a NOx source is mixed with ammonia and allowed to react at the surface of the proper catalyst.
Particulate Matter (PM) Emissions   | PM + SO2 or HCl   | PM + NOx   |   Any Combination PM, SO2, HCl, NOx, mercury, dioxins
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DeNOx

Selective Catalytic Reduction (SCR) is the process of NOx reduction, or DeNOx, that occurs when a NOx source is mixed with ammonia and allowed to react at the surface of the proper catalyst.  The liquid ammonia injected upstream immediately turns into gas, mixes with the NOx gas and the mixture then reacts at the catalyst. The result is the conversion of the mixture to nitrogen gas N2 and water vapor H2O, both harmless constituents of the atmosphere. While the process uses aqueous ammonia, there is no wet residue or by-product collected.  All the reactants leave the system in the form of gases.

Tri-Mer offers three DeNOx approaches:
1. Dry removal with the unique catalytic ceramic catalyst filters for gas temperatures greater than 350°F.
This technology features DeNOx at temperatures lower than conventional SCR while also capturing particulate, and
offers the option of removing acid gases, mercury, and dioxins. Please view our NOx Control page for more information.
2. Conventional stand-alone SCR equipment.
Tri-Mer offers low temperature DeNOx that operates at roughly 300°F to 750°F. For more information, see our Low Temperature SCR page. We also offer high temperature DeNOx that operates in the range of 600°F to 1100°F.
3. A non-SCR process
A non-SCR process, wet scrubbing with the Tri-NOx MultiChem system, for applications under 350°F with special requirements. See Tri-NOx for more information.

DeNOx efficiencies over 90% can be achieved. The Tri-Mer integrated SCR systems, whether filter based or stand-along catalytic reactor, include ammonia injection and storage tanks. For smaller applications, 300 gallon totes of aqueous ammonia are suitable.

DeNOx aqueous ammonia used for smaller DeNOx projects and reduction of NOx DeNOx filling station and storage tanks for NOx reduction in conjunction with ceramic filter systems

Totes of aqueous ammonia used
on smaller DeNOx projects.

DeNOx filling station and storage tanks used on large DeNOx installations.


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Kevin Moss
Ph: 989.321.2991
kevin.moss@tri-mer.com