What is the purity that can be achieved with side-line extraction?
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In distillation operations, when there is a small amount of light components at the top of the tower, the product can be obtained from a side stream in the distillation section. Without reflux, what purity can generally be achieved when the product is taken from this side stream?
99% is also possible; it depends on the properties of the material
We have a tower from which the liquid-phase product is obtained via side lines; there is reflux and displacement at the top of the tower, as well as displacement at the bottom. The highest purity of the product can reach 5 nines.
The value measured on our company’s side line can also reach 99.5%; it depends on how well the temperature and pressure are controlled
This is related to many factors: 1. Consider the properties of the separated systems, relative volatility； 2. It is also related to the number of trays from the side line to the top of the tower; the more trays there are, the better the separation effect ； 3. During operation, the higher the reflux ratio, the better the separation effect; therefore, it is not possible to state a specific value in general. First, it is necessary to consider what is being separated, as well as the design of the tower
It can reach 99%, but it depends on the purpose of the design；
It can reach over 99%, but this depends on the purpose of the design as well as the precision of the tower.