| 摘要: |
| 目的 为催化剂孔结构的设计提供依据。方法 采用具有不同孔径的两种催化剂对沥青质的加氢反应性能进行研究，对比催化剂孔结构对沥青质加氢反应过程的影响。结果 不同来源渣油沥青质的转化率接近，均为60%左右，远小于分子更小的煤焦油沥青质的转化率（79.88%），说明位阻效应和分子结构的复杂性对沥青质加氢反应过程具有重要的影响。沥青质在小孔径、高活性金属含量催化剂上的转化率比大孔径催化剂高10%左右，更容易脱除沥青质外围的饱和结构，但由于内扩散的限制及反应后沥青质缩合度的增加，沥青质加氢反应的生焦倾向更大。结论 合适的孔径和活性金属含量以及两者的合理匹配是沥青质加氢反应具有高转化率和良好的产品分布的关键。 |
| 关键词: 沥青质 加氢反应 催化剂 反应性能 |
| DOI：10.3969/j.issn.1007-3426.2025.03.003 |
| 分类号: |
| 基金项目:山东省重点研发计划“原油及其馏分制化学品和特种燃料成套工艺包开发”（2021ZLGX06） |
|
| Influence of catalyst structure composition on asphaltene hydrogenation reaction performance |
|
SUN Jie1, XIAO Shengyu2, LI Mingzhen2, LI Yinghao2, SUN Yudong2
|
|
1.Shandong Qilong Chemical Co., Ltd., Zibo, Shandong, China;2.College of Chemistry and Chemical Engineering, China University of Petroleum (East China), Qingdao, Shandong, China
|
| Abstract: |
| Objective The aim is to provide a basis for the design of catalyst pore structure. Method The hydrogenation reaction performance of asphaltene were researched using two catalysts with different pore sizes, and the effect of catalyst pore structure on the hydrogenation reaction process of asphaltene was compared. Result The conversion rates of residue asphaltene were close to be about 60%, which was far less than the 79.88% conversion rate of coal tar asphaltenes with smaller molecules, indicating that the steric effect and the complexity of molecular structure had an important effect on the hydrogenation reaction process of asphaltene. The conversion rate of asphaltene on the catalyst with a small pore size and high active metal content was about 10% higher than that on the catalyst with a large pore size, and it was easier to remove the saturated structure outside the asphaltene. However, due to the limitation of internal diffusion and the increase of asphaltene condensation degree after the reaction, the coking tendency of the asphaltene hydrogenation reaction was greater. Conclusion The key factors of high conversion rate and good product distribution of the asphaltene hydrogenation reaction are suitable pore size, active metal content, and reasonable matching of them of catalyst. |
| Key words: asphaltene hydrogeneration reaction catalyst reaction performance |
