A residue hydrogenation - delayed coking combination process was constructed, in which low-sulfur, high-coke residue oil produced by residue hydrogenation was supplied to delayed coking as feedstock to produce high-quality anode materials (low-sulfur petroleum coke). This practice is of great significance for improving the technical level of delayed coking, reducing environmental pressure, and promoting the transformation and upgrading of refineries. Combined with the process characteristics and production practice of PetroChina Yunnan Petrochemical Company, on the basis of the residue hydrogenation - delayed coking combination process for producing low-sulfur petroleum coke, the sulfur content in the feedstock was increased by increasing the proportion of vacuum residue oil in the feedstock, the selectivity of hydrogenation desulfurization was improved by maintaining high space velocity and adjusting the temperature of each reactor bed, and the feedstock properties were improved by blending catalytic cracking diesel. Ultimately, hydrogenated residue oil with a sulfur content of less than 0.60% and a coke content of around 6.00% was directly produced. High-quality low-sulfur petroleum coke that meets the 2B standard was successfully produced and can be used as an anode material for power batteries, thus expanding high-value-added specialty products while producing light oil fuels.

构建渣油加氢-延迟焦化组合工艺，渣油加氢生产低硫、高残炭的脱硫渣油供给延迟焦化作原料，生产优质的负极材料（低硫石油焦），对于提升延迟焦化技术水平、减轻环保压力、促进炼油厂转型升级具有重要示范意义。结合中国石油云南石化有限公司工艺流程特点和生产实际，在渣油加氢-延迟焦化组合工艺生产低硫石油焦技术的基础上，通过提高原料油减压渣油的掺炼比例提高原料的残炭，通过保持高空速和调整各反应器床层温度提高加氢脱硫选择性，通过掺炼催化裂化柴油改善原料性质，最终直接生产出硫质量分数在0.60%以下、残炭在6.00%左右的加氢渣油。成功生产出符合2B标准的高品质低硫石油焦，可以作为动力电池的负极材料，在生产轻质油品燃料的同时拓展了高附加值的特种产品。