If I have ammonia in my waste gas stream to the thermal oxidizer will the incineration of ammonia generate more NOX or will it serve to reduce NOX. Any pointers?
You haven't told us how much ammonia your waste gas contains. Nor have you told us the operating conditions for the thermal oxidizer (i.e., combustion temperature, excess air percentage, whether or not a catalyst is used, etc).
However, in general, ammonia combustion does produce NO and NO2. Depending upon the location of your plant and the environmental regulations that you must satisfy, you may have to consider removal of those gases from your oxidizer flue gas.
Milton Beychok
(Contact me at www.air-dispersion.com)
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I noticed that for the similar posting you made a on June 10th (thread127-125964), some of the responders felt that you might get some thermal deNox taking place. That won't take place by itself ... it takes some very knowledgeable and careful design to get thermal deNox to work. I suggest that you do a Google search on "thermal deNox" and locate some reputable designers and vendors of such units ... and seek their help.
Also, you should be aware that thermal deNox only achieves 40 to 70 percent NOx removal.
I suggest you read this paper by ExxonMobil Research and Engineering (the developer of the thermal deNox process)and scroll down to page 4 of the 8-page pdf document:
