关键词: 氢气溶解度, RICP 渣油加氢工艺, 沥青质稳定性

Abstract: The vapor-liquid equilibrium of H2-residue-aromatics of RHT process was built based on the Aspen Plus software, which aims at figuring out the influence of various kinds of aromatics as solvent on the amount of soluble hydrogen in the liquid phase. Naphthalene, anthracene, chrysene, pyrene, and HCO were tested. The results showed that hydrogen solubility in the liquid phase increased after the addition of aromatics solvent; hydrogenation of residue resulted in the further raise of hydrogen solubility in residue compared with the residue feedstock. Based on the knowledge that aromatic solvents are in favor of asphaltene stability, it was found that the increase of hydrogen solubility has negative effect on the asphaltene stability. The results provide a deeper understanding of the effect of aromatic hydrocarbons on the stability of asphaltenes in RICP process.

Key words: Hydrogen Solubility, RICP process, asphaltene stability.