关键词: font-family:-apple-system, blinkmacsystemfont, ", font-size:14px, background-color:#FFFFFF, ">低硫残渣型, 船用燃料油, 固定床渣油加氢技术, 体积空速, 氢分压, 反应温度, 氢油比, 降残炭率

Abstract: To produce low sulfur residue marine fuel oil, the influences of reaction conditions such as space velocity, hydrogen partial pressure, reaction temperature and other reaction conditions on the hydrodesulfurization and carbon residue hydroconversion of typical high-sulfur residue feedstock were studied in a pilot plant of residue hydrotreating unit, and the optimization experiment of reaction conditions was carried out. The results show that under the same catalyst system, space velocity, hydrogen partial pressure and reaction temperature are the key factors affecting the selective hydrodesulfurization of residue, while the influence of the hydrogen-to-oil ratio is relatively small. Considering both the hydrodesulfurization performance and stability of the hydrogenation catalyst system, a higher and suitable space velocity (from 0.20 h^-1 to 0.24 h^-1), an appropriate hydrogen partial pressure (from 13 MPa to 15 MPa) and a reaction temperature not exceeding 380℃ are more beneficial to the selective hydrodesulfurization of residue. Based on the above results, by comprehensively adjusting and matching different reaction parameters, when the mass fraction of sulfur in the hydrotreated product is below 0.50%, the carbon residue is increased by 11.3 percentage points and the carbon residue reduction rate is reduced by 5.1 percentage points. The adjustment and optimization of reaction conditions are more important for the selective hydrodesulfurization process of residue.

Key words: font-family:-apple-system, blinkmacsystemfont, ", font-size:14px, background-color:#FFFFFF, ">low sulfur residue type, marine fuel oil, fixed-bed residue hydrotreating technology, volume space velocity, hydrogen partial pressure, reaction temperature, hydrogen-to-oil ratio, removal rate of carbon residue