Effect of too low solvent ratio in drawer distillation on the non-aromatic content in mixed aromatics
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I took a look at the operation manual provided by the manufacturer. Among the factors that contribute to a high non-aromatic content in mixed aromatics, one of them mentions an excessively low solvent ratio; however, I thought that a higher solvent ratio should be the issue. I hope some experts can help discuss this matter with me. Other factors such as a high solvent temperature, a low temperature at the bottom of the extraction tower, a low water content in the solvent, and high reflux in the extraction tower are all understandable to me. But I don’t understand why an excessively low solvent ratio would be a problem. I kindly ask my colleagues for their guidance
In aromatic hydrocarbon extraction, extraction distillation involves a low solvent ratio, which means less extractant is used. A smaller amount of extractant results in poorer extraction efficiency, leading to an increased content of non-aromatic compounds in the mixed aromatic hydrocarbons.
Note that it refers to an excessively low solvent ratio; by \"excessively low\", it means there isn’t even enough solvent to handle the aromatic compounds
With all other process conditions unchanged, a lower volume ratio leads to an increase in aromatic purity, an increase in the content of aromatics among the non-aromatic compounds, and the non-aromatic compounds do not end up as part of the aromatics.
It’s too low; you need to consider the proportion of aromatic compounds in your feed. The solvent ratio should be within a flexible range rather than being a fixed design value. We can discuss this together, Q1031625064
If the solvent ratio is too low, the non-aromatic content in the aromatics will decrease；
It should be noted that the issue here is \"too low\" – too low means that the amount of solvent is not sufficient to meet the conditions required for extraction and separation. When the amount of solvent is adequate to satisfy the basic requirements of extraction, reducing the solvent ratio helps to decrease the non-aromatic components in the mixed aromatics
It should be noted that the issue here is \"too low\" – too low means that the amount of solvent is not sufficient to meet the conditions required for extraction and separation. When the amount of solvent is adequate to satisfy the basic requirements of extraction, reducing the solvent ratio helps to decrease the non-aromatic components in the mixed aromatics