The new diesel hydrorefining catalyst was industrially applied for the first time at the Cangzhou branch

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This post was last edited by yxhoo on 2012-2-10 05:08. On July 22, 2011, Sinopec Cangzhou Branch successfully commissioned a new diesel hydrotreating unit with a capacity of 1.6 million tons per year. The device passed the basic engineering design review in July 2010, mechanical commissioning was completed on May 31, 2011; pre-vulcanization began on July 17, and qualified products were produced on July 22. This unit fully incorporates the research and development achievements of SEI’s hydrogenation technology, including a fully mixed hydrogen heating and high-temperature cracking scheme used in the reaction section, a two-tower stripping process with a hydrogen sulfide stripping tower and a product distillation tower in the distillation section, as well as SEI’s patented internal components for hydrogenation reactors, double-pass heat exchangers with threaded locking rings, and air-cooled exchangers using rolled finned tubes. The use of the RS-1100 diesel refining desulfurization catalyst represents the first industrial application of this catalyst. The diesel hydrotreating unit at the Cangzhou branch is one of the seven diesel hydrotreating units developed by SEI to address the upgrade in the quality of diesel fuel for vehicles meeting National III standards. The design and construction process received careful attention and strong support from company leaders at all levels. During the design process, the project team overcame the challenge of tight deadlines by demonstrating a spirit of teamwork and hard work. They carried out effective modular design efforts by drawing on similar installations in Jinan and Jingmen, making maximum use of standardized designs. It took only 12 months from the initial design review to the completion and operation of the facility, which fully reflects SEI’s technical expertise and project management capabilities ； During the commissioning phase, Deputy Chief Engineer Li Hao and the deputy chief in charge of relevant specialties visited the site to provide technical guidance. Manager Chen Yang organized technical personnel from various specialties to form a commissioning team, offering comprehensive technical support to ensure a smooth start-up process. The successful commissioning of this facility laid a solid foundation for the improvement of the quality of diesel products at the Cangzhou branch. It also served as a good starting point for subsequent facilities in Jinan, Jingmen, and other locations, adding new achievements to SEI’s hydrogenation technologies. Recently, the new diesel hydrotreating catalyst RS-1100, developed by the China Institute of Petroleum, was used industrially for the first time in the 1.6 million tons per year diesel hydrotreating unit at Sinopec Cangzhou Branch, and the unit started up successfully on its first attempt. Under milder conditions, the product properties met the expected standards, indicating that the performance of the diesel hydroprocessing catalyst developed by the Institute of Petrology has reached a new level. Developing diesel hydrodesulfurization catalysts with higher performance is necessary not only to provide technical support for domestic refineries in producing ultra-low sulfur diesel, but also to enhance the international competitiveness of China’s refining technology. Compared with the reference catalyst RS-1000, the new generation of diesel ultra-deep hydrogenation desulfurization catalyst RS-1100 features higher desulfurization activity, along with a 14% reduction in bulk density. By providing technical support for refineries to produce ultra-low sulfur diesel, it also reduces the procurement costs for refineries using this catalyst, further enhancing the competitiveness of the diesel hydrogenation refining catalysts developed by the China Petroleum Research Institute in the market. The device produces qualified refined diesel, with a sulfur content of less than 300 ppm, meeting the National III diesel standard and thus achieving the intended objectives. Next, targeted further industrial application and promotion of the RS-1100 catalyst will be carried out.