emissions are the product of every air-fed combustion process and are
known to contribute to acid rain, forest and vegetation decline, changes
to the ozone layer and greenhouse gases. The EPA and other governing
agencies mandate the reduction and control of NOx emissions through
Ammonia is used in a de-nitrification process
converting NOx into free nitrogen and water vapor through catalytic (SCR)
and non-catalytic (SNCR) applications. (See Below)
- Selective Catalytic Reduction
or a compound of ammonia is used as the reducing agent that is
injected into the flue gas stream, passing over a catalyst. NOx
emission reductions of 80-90% are achieved.
efficiency of SCR process reactions relies on a very close and
effective reagent injection-control, based on the feedback from
measured NOx emissions in the flue gas at the economizer outlet.
catalyst composition can consist of many active metals and support
materials to meet specific requirements in each SCR installation.
online control of process exhaust data or injection mapping functions
is typically implemented to prevent "ammonia slip".
SCR technology has been applied to utility and industrial boilers,
process heaters, gas turbines, internal combustion engines, chemical
plants and steel mills.
- Selective Non-Catalytic Reduction
is used as a reducing agent that is injected into hot flue gas
reacting with the NOx at high temperatures. NOx emission
reductions of 30-70% are achieved.
efficiency of SNCR process reactions relies on the careful injection
of the ammonia reagent into regions of the furnace or other sources
where proper conditions such as, temperature, residence time and
concentration exist for the reaction to occur while preventing
systems are suitable for use on low capacity factor units, units with
short service lives and for seasonal control.
M. Technologies Inc. is an
industry leader in the field of ammonia system integration for the Power
Industry. We will provide the conceptual design, fabrication,
turnkey procurement, installation, system training, system start-up,
scheduled preventative maintenance programs, safety training,
assistance with PSM,
RMP and General
Industry program requirements and 24 hour technical
equipment design and fabrication includes the ammonia storage and
delivery system, the metering station, ammonia injection
controls, skid packages and
questions, comments or additional information, please contact us at:
M. Technologies Inc.