【摘要】 考察了加氢工艺条件对高硫渣油加氢脱硫反应效果的影响,结果表明:提高反应温度、降低空速有利于提高加氢脱硫反应活性;降低反应温度、降低氢分压及提高空速有利于提高加氢脱硫选择性。在达到相同脱硫率的情况下,提高反应温度可以采用更高的反应空速,从而降低渣油加氢的加工成本。渣油加氢-延迟焦化组合工艺的研究结果表明:随着加氢脱硫深度增加,加氢渣油中剩余的含硫化合物更倾向于生成石油焦;组合工艺可以大幅降低石油焦硫质量分数到3.0%以下,满足低硫焦的指标要求;与单独延迟焦化工艺相比,组合工艺可以生产更多更优质的高价值产品。更多还原

【Abstract】 The hydrotreating process conditions of high sulfur residue were investigated. The results show that increasing the reaction temperature and reducing the LHSV are beneficial for increasing the hydrodesulfurization reaction effect; lowering the reaction temperature, reducing the hydrogen partial pressure and increasing the LHSV are beneficial for increasing the hydrodesulfurization selectivity. In the case of achieving the same desulfurization rate, increasing the reaction temperature can greatly increase the LHSV,thereby reducing the processing cost of residue hydrogenation. Research on the combined process of residue hydrogenation and delayed coking shows that as the depth of hydrodesulfurization increases, the remaining sulfur compounds in the hydrogenated residue are more likely to remain in petroleum coke. The combined process can greatly reduce the sulfur mass fraction of petroleum coke to below 3.0%,which can meet the index requirements of low-sulfur coke. Compared with delayed coking process, the combined process can produce more high-value products, and the properties of the coking products are also better.更多还原