What is the main reaction of ammonia in the main furnace?
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I would like to ask whether the ammonia reaction in the main furnace is mainly a combustion reaction or a decomposition reaction?
The reaction of ammonia in the main furnace is mainly the reaction of NH3 and SO2 to generate H2S, water and N2, with very little decomposition reaction.
Reply to 1# SHIBIN1 As long as the furnace temperature reaches above 1250 degrees, ammonia decomposes mainly into H2O and N2. If the furnace temperature is low, NO may be generated, and ammonia can also generate H2 and N2.
Reply to 2# Clauspolunit Is this confirmed? The literature I read is that high-temperature decomposition reactions are the main ones and low-temperature combustion reactions are the main ones.
This post was last edited by sdwfsgyykai on 2019-10-21 07:51. Hello, teacher, if you go to a fluidized bed boiler to mix ammonia, the temperature in the furnace is about 900 degrees, and the oxygen content is 1-2, what gas will be produced? Waiting for the reply, thank you
Ammonia mainly undergoes three reactions in the reactor of the sulfur recovery unit. One is the oxidation reaction of ammonia. Compared with hydrogen sulfide, the reaction speed of ammonia and oxygen is very slow, especially in an oxygen-depleted state. The second is the high-temperature decomposition reaction of ammonia. However, in the presence of hydrogen sulfide and water, the decomposition reaction is strongly inhibited. According to data, under these conditions, even if the temperature reaches a high temperature of 1200°C, the decomposition rate is only 20%. The most important reaction of ammonia in the reactor is the reaction between ammonia and sulfur dioxide.
Thank you, teacher. Although the furnace is different from ours, I have gained a lot.