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I would like to ask those of you working in the coal chemical industry: why is the top temperature of the ammonia vaporization tower controlled at around 102°C? What are the principles governing the control of the top temperature for water vapor desorption? Very confused
Firstly, this is a very simple question: water boils at 100 degrees. Second, in ammonia distillation towers, steam is usually introduced directly; if the temperature exceeds the boiling point under normal pressure, it means that the steam is escaping directly, so there’s no need to use steam for ammonia distillation. The standard operating procedure is to use a temperature of 98 degrees, leaving some margin at 100 degrees, so that the amount of ammonia solution produced isn’t too large