Should steam or ammonia water be used first in the ammonia evaporator?
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How to properly put into service and shut down an ammonia evaporator?
Based on your process requirements, is there any interlock mechanism such as overheat protection?
Starting from the need to control the wall temperature, steam should be introduced subsequently; however, the endothermic process of ammonia evaporation can easily cause freezing in the steam lines. Therefore, after weighing the pros and cons, it is advisable to introduce steam first, followed by liquid ammonia, with only a short interval between the two steps
How can there be discussions about sulfuric acid in the ammonia industry or in phosphate ammonium fertilizer plants?
Ammonia water should be added, with steam being introduced slowly – this is the safe way to do it.