Is a decompressor necessary for the ammonia vaporization tower?
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Is a decompressor necessary for the ammonia vaporization tower? It can still be designed as conventional distillation, with direct condensation and reflux at the tower top?
The decompressor is installed to increase the ammonia concentration in the gas exiting the tower, that is, the concentration of ammonia water； If designed as a distillation tower, the tower pressure must be increased to over ten kilograms, resulting in a very large temperature difference between the upper and lower parts of the tower.
Isn’t a so-called shrinker nothing but partial condensation? If the gas phase contains high levels of ammonia, wash it with water. Is it just to reduce consumption?
This technique originated in the former Soviet Union; before the 1980s, diluted ammonia was used for fertilization in rural areas, and increasing the concentration of ammonia could reduce transportation costs. The ammonia vapor after leaving the tower is condensed and cooled to become ammonia water.