Thread Content
New hydrocracking catalysts contribute to the upgrading of diesel refining. Driven by the \"dual carbon\" goals, traditional refineries continue to be optimized and upgraded, with the production of refined products such as diesel moving toward higher quality and lower carbon emissions, while clean processing methods such as hydrocracking and catalytic cracking play an increasingly important role. At the same time, the trend toward integration of refining and chemical processing is evident; companies are actively expanding into the field of new chemical materials, striving to reduce the amount of crude oil used and increase the production of chemicals. Converting excess diesel in the market into feedstock for ethylene cracking holds great potential for application, and the key technology behind this lies in the development of hydrocracking catalysts. Through in-depth research, new approaches to diesel hydrocracking are being explored. Under the school-enterprise joint training program, Wang Wenxiao, relying on the ongoing project \"Research on Key Catalytic Materials and Catalytic Processes for Molecular Refining,\" has focused on the technical requirements related to the hydrocracking of diesel-derived polycyclic aromatic hydrocarbons to produce materials suitable for ethylene cracking and naphtha. His work involves the design of bifunctional catalysts for such hydrocracking processes, as well as the study of how these bifunctional catalysts function in the selective ring-opening cracking of polycyclic aromatic hydrocarbons. Currently, the relevant diesel hydrocracking catalysts used both domestically and internationally are mainly supported types, as their preparation methods are well-established and they possess good anti-sintering properties and structural stability. Thanks to years of development, they have become the dominant type in industry, such as UIP’s HC-215 and HC-185, as well as Chevron’s ICR-215 and ICR-160. The Research Institute of Petroleum and Petrochemicals, China National Petroleum Corporation, has developed a new diesel hydrocracking catalyst that combines non-support metal sulfides with Y molecular sieves. This catalyst possesses strong metal hydrogenation capabilities, and it helps to reduce the decline in activity caused by interactions between the support and metal components. It features a large specific surface area and high pore volume, which enable it to exhibit better performance in actual oil product evaluations. Through scientific research efforts, progress is being made to upgrade diesel refining processes. Wang Wenxiao utilized the existing instruments and equipment at the Petrochemical Research Institute to conduct experiments, preparing a series of hydrocracking catalysts and analyzing the suitability of different catalysts for various feedstocks. Initial breakthroughs were achieved in the development of unsupported diesel hydrocracking catalysts, and a new type of hydrocracking catalyst was created, enabling the production of multiple chemical raw materials from diesel through hydrocracking. Evaluation tests were conducted using straight-run diesel from refineries as the raw material. Compared with the raw material, the alkanes content in the product increased by 7.7%, the total naphthenes content increased by 5.3%, while the aromatics content decreased by 13%. The aromatic index (BMCI) of the oil dropped from 25.67 to 16.59, achieving the goal of producing more high-quality ethylene cracking feedstock; the catalyst’s operational cycle lasted 720 hours. Its research findings have been accepted for publication in the journal Chemical Engineering Progress; 1 invention patent has been applied for, and it has participated in 2 national conferences. Carrying forward the spirit and setting sail on a new journey, driven by his passion for the oil industry, Wang Wenxiao is about to join the East China Environmental Geotechnics Branch of China National Petroleum Engineering Corporation to embark on a new chapter of endeavor. As a young energy professional in the new era, he is determined to apply his professional knowledge to the field of environmental protection in petroleum engineering, thereby contributing to green and low-carbon development. Looking to the future, we will carry forward the petroleum spirit of hard work and dedication, focusing on areas such as safety, environmental protection, and environmental management. Through concrete actions, we will fulfill our mission of \"contributing to our country through petroleum\", and write a glorious chapter of our youth on the path of serving our nation through energy.