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**The key research and development project “Key Technologies for Co-hydrogenation of Coal and Heavy Oil and Product Processing” passed the on-site evaluation by the expert panel. Author/Source: Collaborative Group for Advanced Processing and Hydrogenation of Coal Tar. Date: April 20, 2021. Clicks: 7. On April 19, the **key research and development project “Key Technologies for Co-hydrogenation of Coal and Heavy Oil and Product Processing”, led by Yanchang Petroleum (Group), successfully completed a 72-hour on-site evaluation. With the support of the key research and development program \"Key Technologies for Co-hydrogenation of Coal and Heavy Oil and Product Processing,\" Yanchang Petroleum Group is focusing on advancing key technical solutions for a 450,000-ton/year coal oil co-refining facility. This technical research achieved a reduction in the viscosity of the oil-coal slurry through the synergistic optimization of the compatibility between coal and heavy oil ； The structure of the vacuum distillation tower was optimized, reducing the amount of oil sludge containing solids and increasing the yield of liquid oil ； Optimization of the pressure reduction system extended the operational life of the device ； Highly efficient Fe-based catalysts were developed, improving conversion and selectivity ； Distillates with high cycloalkanes and low sulfur content were produced ； By localizing the key equipment of the facility and other measures, the new hydrogenation process for coal and heavy oil was applied in the demonstration plant, resulting in an increase of 9.45 percentage points in the overall oil yield compared to before the process optimization, as well as an increase of 9.78 percentage points in the oil yield (naphtha + diesel). The assessment results show that all indicators have met or exceeded the requirements set out in the project task statement. Hu Guangfa, the project leader and chief engineer of Yanchang Petroleum Group, along with the leaders of 12 sub-projects from institutions such as East China University of Science and Technology, the Coal Science and Technology Research Institute, and Northwest University, participated in the assessment. **The High-Tech Research and Development Center of the Ministry of Science and Technology, the Shaanxi Chemical Industry Society, and relevant experts provided guidance for the on-site assessment.