Core Insights - The successful operation of a pilot plant for hydrogenation of high-temperature coal tar marks a new pathway for coal-to-liquid fuel production [1][2] - The developed technology addresses the bottlenecks in deep refining of high-temperature coal tar and the development of high-end chemical products, filling a gap in the domestic market for producing high-density, low-freezing-point liquid fuels from coal tar [1] Group 1: Technology Development - The technology took seven years to develop, progressing from laboratory research to a pilot scale of 100 tons, including catalyst development, process optimization, and product testing [2] - A collaboration with enterprises led to the establishment of a 1,000-ton pilot evaluation facility, which successfully operated on the first attempt using refined wash oil as raw material [2] Group 2: Product Characteristics - The products produced from the pilot plant have a density exceeding 0.83 g/cm³ and a freezing point below -60°C, making them suitable for use as transportation fuels and blending components [2] Group 3: Technical Challenges - High-temperature coal tar, a byproduct of coking, presents challenges due to its high density, viscosity, and boiling point, along with impurities such as nitrogen, sulfur, and oxygen, which complicate hydrogenation processes [1] - The research team focused on removing impurities from high-temperature coal tar, enhancing catalyst resistance to coking, and innovating reactor designs to achieve deep conversion of low-quality raw materials into high-quality, clean coal-based liquid fuels [1]

串联式全加氢工艺攻克上下游"炼化一体"发展瓶颈 青岛能源所多相催化转化研究组基于煤焦化副产的高温馏分油的分子结构的特殊性，围绕高温煤焦油杂 质脱除、催化剂抗结焦性能提升、反应器进行创新设计攻关，开发了加氢预处理—加氢精制—加氢开环 的串联式全加氢工艺，配套使用的非贵金属加氢预处理催化剂、加氢精制催化剂和酸性适中的选择性加 氢裂化催化剂，实现了富含多环芳烃劣质原料深度转化生产高品质、清洁煤基液体燃料。 该所相关负责人介绍，该技术历时7年，从实验室开发到百吨级小试，初步完成催化剂研发、工艺优化 和产品测试。之后，该所与企业合作搭建千吨级中试评价装置，并以精制洗油为原料，实现中试装置一 次性开车成功。此次开车的中试装置生产的产品密度超过0.83g/cm³，凝点低于-60℃，非常适合用作交 通运输燃料及调和组分。 该所开发的串联式全加氢工艺技术，攻克了高温煤焦油深度炼制及高端化工产品开发的上下游"炼化一 体"发展瓶颈，填补了国内利用煤焦油重组分生产大密度、低凝点液体燃料的空白，为特殊应用场景下 燃料的低成本、大规模生产提供了技术支撑。 据介绍，焦化产生的煤焦油属于炼焦副产物，产量大且富含多环芳烃，非常适合生产低凝点液 ...