Solvent deasphalting solvent ratio
Thread Content
Why should the solvent ratio be decreased when the solvent becomes heavier, and increased when it becomes lighter? Shouldn’t it be the other way around? Looking for an assist.
Why should the solvent ratio be decreased when the solvent becomes heavier, and increased when it becomes lighter? Shouldn’t it be the other way around? To figure out this issue, it is necessary to understand the properties of the solvent. The solubility of the solvent increases as its weight increases; in other words, the solubility of the C4 component is higher than that of C3, and that of C5 is higher than that of C4. Therefore, in order to maintain the properties of the oil product as well as the overall yield of the process, it is necessary to reduce the solvent ratio when the solubility of the solvent is high (i.e., when the solvent is heavier). On the other hand, when the solubility of the solvent decreases, it is necessary to increase the solvent ratio in order to ensure the yield of the process and the quality of the product (i.e., when the solvent is lighter)