Top and bottom temperature trends in distillation column operation
Thread Content
Does the temperature increase gradually from the top to the bottom of the distillation column? Do situations that are not of this kind occur? I have a question!
Without a central heat exchanger, it’s usually like this.
A complete distillation column includes sufficient trays, reflux at the top, and a heater at the bottom. It can be seen that the bottom is the source of heat, while the top is the source of cold; therefore, the temperature gradient throughout the tower should decrease from bottom to top.
If the high temperature returning from the reboiler is excluded, then it will be based on the gradient
\ud83d\udc4d
Check whether a reboiler or stripping steam is used at the bottom of the tower; if stripping steam is used, the gradient may not necessarily increase from top to bottom
Check whether a reboiler or stripping steam is used at the bottom of the tower; if stripping steam is used, the gradient may not necessarily increase from top to bottom
Most distillation columns are like this: if there is a heat exchanger in the middle or cold material is fed in, this gradient will be altered
Temperature gradient and concentration gradient are the fundamental conditions for distillation