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

摘要： 为生产低硫残渣型船用燃料油，采用典型高硫渣油原料在中型渣油加氢装置上开展了反应条件（体积空速、氢分压、反应温度及氢油比等）对渣油加氢脱硫及残炭加氢转化过程影响规律的研究，并进行了反应条件优化试验。结果表明：在相同催化剂体系下，体积空速、氢分压和反应温度是影响渣油选择性加氢脱硫的关键因素，而氢油比的影响较小；在兼顾加氢催化剂体系的加氢脱硫性能和稳定性的前题下，较高且适宜的体积空速（0.20～0.24 h^-1）、适合的氢分压（13～15 MPa）以及不高于380℃的反应温度更有利于渣油选择性加氢脱硫。基于以上结果，通过综合调整匹配不同反应参数，在满足加氢产品硫质量分数低于0.50%的情况下，残炭提升了11.3个百分点、降残炭率降低了5.1百分点。

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