Seeking help with ammonia vaporization tower
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A ammonia vaporization tower is now required, with the following conditions: 1. 20% ammonia solution falls from the top of the tower; after reaching the tray, it drops evenly and freely through a liquid separator. Ammonia solution temperature: 20 degrees, flow rate: 300 kg/h. 2. High-temperature flue gas at 200°C is introduced at the bottom of the ammonia vaporization tower; the parameters of this flue gas can be selected based on standard flue gas parameters. 3. Try to evaporate as much ammonia as possible, allowing it to be carried away by the flue gas, while carrying away as little water vapor as possible. May I ask how many cubic meters of flue gas at 200°C are required? What temperature is appropriate for controlling the top of the ammonia vaporization tower? Additionally, since the flue gas carries away ammonia, how can we determine the amount of water vapor in the mixed gas? Is it based on the saturated water vapor at the flue gas outlet temperature? Is it still in an unsaturated state? I’m not quite sure how steam carries things away Thank you all for your guidance @QingchengJun
What is the purpose of this process? Is it to remove ammonia from the ammonia water in order to discharge the wastewater? Is it necessary to release the flue gas into the atmosphere? Is it legal to treat ammonia water with flue gas before releasing it, thereby emitting large amounts of ammonia? Using hot air to blow through ammonia water in order to remove ammonia is applied in wastewater treatment; theoretically, this process makes use of both distillation and stripping principles, and factors such as the vapor pressure and gas molar fraction at the corresponding temperatures must be taken into account
It shouldn’t be possible to include ammonia in the high-temperature flue gas, right? Aren’t there any regulations regarding ammonia levels in flue gas emissions?
The flue gas carries away the ammonia gas present in the ammonia solution, primarily for SCR denitration purposes; water is separated as much as possible so that only the ammonia gas is carried away by the flue gas. The flue gas and ammonia gas enter the denitration system, while the wastewater is discharged or sent to a water treatment system