Variation patterns of hydrogen solubility in light and heavy oil products
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I would like to ask experts about the patterns governing the solubility of hydrogen in petroleum products. For example, under the same temperature and pressure conditions, is the solubility of hydrogen in heavy oils such as residue or catalytic cracking tail oil greater or smaller than its solubility in light oils such as gasoline, diesel, or lubricant base oils? Is there any pattern to this?
This post was last edited by Trace elements on 2017-1-24 at 16:24. The solubility of hydrogen should be considered a thermodynamic variable; the temperature, pressure, and composition of the solvent all have a significant impact on its solubility in that solvent. As the original poster mentioned, under constant temperature and pressure, the solubility of hydrogen in heavy oil and light oil mainly depends on their composition. Hydrogen has a higher solubility in alkanes than in aromatics, and its solubility in either alkanes or aromatics is greater than that in a mixture of alkanes and aromatics. In other words, the solubility of a single-component oil is higher than that of a mixed component; for single alkanes, as the number of carbon atoms increases, so does the solubility. Based on the various types of oils mentioned by the original poster, it can be roughly inferred as follows: the solubility of hydrogen in gasoline and diesel > that in lubricant base oils > that in hydrocracking tail oils > that in residue oil
It increases as temperature and pressure rise