Denitration system and method for sintering flue gas without ammonia reducing agent
A technology of sintering flue gas and reducing agent, which is applied in the field of sintering flue gas denitrification system without ammonia reducing agent, which can solve the problems of large amount of flue gas, low removal efficiency, and high removal cost of sintering machines, and achieve a reduction in floor space , Simplify the process flow, simplify the effect of process equipment
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[0033] The sintering flue gas is heated to a suitable temperature by a heater in front of the dust collector and then sent to the denitration reactor. Since the denitration reactor is equipped with a catalyst layer, the catalytic reduction reaction is carried out to remove NOx under the action of the catalyst, and the removal efficiency can reach 80 % to 90% or even higher, the sintering flue gas after the reaction is discharged into the atmosphere after dust removal and desulfurization.
[0034] In this embodiment, because the denitration reactor is arranged in front of the dust collector, it can save energy, but the amount of iron ore catalyst is larger, so the denitration reactor can be designed as a fluidized bed to realize online catalyst replacement.
[0035] Through research, it is found that CO in the sintering flue gas itself can reduce NOx by 10% to 15% by raising the temperature without a catalyst; using a kind of iron ore as a catalyst, NOx can be reduced under the ...
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