Distillation column top temperature
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What are the hazards of excessively high or low temperatures at the top of a distillation tower? Please provide a detailed explanation!
The top of tower temperature reflects the changes in the composition of the product at the tower top. The top temperature is too high, resulting in more heavy components. The top temperature is too low, resulting in an excess of light components.
It’s mainly to ensure that the product quality is up to standard, right?
It mainly depends on the quality of the product at the bottom of the tower; since there are more light components in this product, it is possible to increase the temperature at the top of the tower； There are too few light components in the product at the bottom of the tower, which allows the temperature at the top of the tower to be reduced and the recovery rate to be increased ；
There are process control parameters; if the temperature is too high, reflux is added
Yes, it depends on the distillation range specified for the product at the top of the tower
The top temperature primarily affects the boiling range of the product; adjustments should be made accordingly based on the relevant product specifications. As long as the quality of the product at the top of the tower remains satisfactory, a higher temperature is certainly preferable, but it is also necessary to consider whether the load on the air cooler at the top of the tower can handle it
It has a significant impact on the flash point of diesel and the dry point of naphtha. It’s mainly about product quality