Regarding the issue of the sulfur-ammonia gas preheater
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If the resistance in the ammonium sulfate gas preheater is high, can it be cleaned by regularly spraying ammonia water plus using hot gas for cleaning? Please discuss the feasibility
My opinion: Theoretically, hot ammonia water is a viable option, but the gas flow rate here is very high; reverse spraying would introduce liquid into the saturator, affecting its operating parameters. Therefore, I recommend abandoning this idea； What is the definition of hot gas? The preheater itself already heats the gas – could there be gas at an even higher temperature? If you are using the ammonia-based desulfurization method, it is necessary to check the effectiveness of the mist capture layer ； If the gas comes directly from drum cooling, it is recommended to enhance the operations of the primary cooler and electrostatic precipitator in order to minimize the content of tar dust as much as possible.
I agree with what was said above. From a technical perspective, it’s clear that the diameter of the condensate discharge pipe in the preheater isn’t very large; it’s not like in the electrostatic precipitator case. Therefore, the efficiency won’t be very good. Secondly, there is no hot gas available for use