Temperature control issue in extraction towers
Thread Content
Oil enters at the bottom of the tower, while the solvent enters at the top. After extraction, the oil exits from the top of the tower, and the solvent exits from the bottom. The tower is heated with heat transfer oil. During the re-extraction process, if I want to keep the temperature of the extraction tower at 85 degrees, should I monitor the temperature at the bottom of the tower or at the top?
The extraction temperature depends on the temperature in the extraction section; generally, there is a temperature difference throughout the extraction tower, which facilitates the extraction process and separation An extraction tower should not have only one temperature; a temperature gradient is created throughout the tower! This temperature gradient varies depending on the solubility of the solute in the solvent; it can increase gradually or decrease gradually! As the original poster said, a situation where there is only one temperature occurs very rarely; what happens instead is that a temperature is detected that should not be at the top or bottom, but rather at the temperature between the solvent feed inlet and the oil feed inlet!
Your extraction method is quite rare; how do you control it now?