Problems in distillation tower operation
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With all other conditions unchanged, if the light components in the feed composition decrease, how do the purity at the bottom and top of the tower change? Up or down? How to analyze it?
The feed section of the tower generally uses bubble-point feeding of the material. When there are changes in your material, an increase in the light components indicates that the bubble point of the material has also changed. By recalculating the bubble point, it becomes possible to analyze the conditions inside the tower.
With all other conditions unchanged, a decrease in the content of light components in the feed composition leads to an increased load on the distillation section; as a result, the heavier components are carried to the top of the tower, causing the product at the top to be of substandard quality and its concentration to decrease. And the content of the product at the bottom of the tower will increase.
If the light components in the feed mixture decrease, the pressure in the distillation section will increase, and the separation efficiency of the product at the top of the tower may decline