Diameter of the two-stage evaporation vapor tube
Thread Content
In the urea production evaporation system, the diameter of the gas phase pipes in the two-stage evaporation separator, as determined through material balance calculations and pipe diameter formulas, should be 65 or more (with an empirical flow velocity of 1–10). However, in actual production, pipes with a diameter of 500 are used. There must be a reason for this, but I’m not sure what it is; I hope someone experienced can help me figure it out.
You should specify what production process is used for granulation and what the production capacity is.
The thickening of the pipe diameter in the two-stage gas separator should be related to the condensation and recovery of the gas phase medium in the two stages. It is necessary to reduce resistance while ensuring product quality (maintaining vacuum levels and reducing water content). At the same time, it is also necessary to consider preventing clogging caused by biuret.
To supplement the question regarding the second floor: the method involves full circulation of the aqueous solution, with granulation taking place through natural cooling in a granulation tower; the production capacity is 20 Wt/year