On anti-corrosion for atmospheric and vacuum distillation
Thread Content
Requirements of the anti-corrosion regulations. Calculate the dew point temperature of water in the gas at the top of the atmospheric pressure tower, and ensure that the operating temperature of the gas phase inside the tower is at least 28°C above this dew point temperature. The tower top recycle reflux temperature is above 90°C. Why is it more than 28°C above the water dew point temperature? What is the basis?
Turning water into a gaseous state rather than a liquid state facilitates heat exchange
It depends on the operating pressure of the tower.
Corrosion proceeds more slowly at temperatures above the dew point, and upgrading the material can also reduce corrosion