【Ten Years of Rapid Development in Chemical Equipment】1724–2013: The First Industrial Facility for Diesel Liquid-Phase Circulating Hydrogenation with a Capacity of 2.6 Million Tons per Year

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Happy May Day 2024! Safety first. Let’s give praise and support to the achievements in China’s chemical engineering technology and equipment. **********************【Ten Years of Progress in Chemical Engineering Equipment】A continuously updated summary post is available; feel free to join the discussions at https://bbs.hcbbs.com/thread-3576046-1-1.html (Source: Haichuan Chemical Engineering Forum) ***************** China’s first liquid-phase cyclic hydrogenation unit has been calibrated 2013-07-17: China’s first industrial unit for liquid-phase cyclic hydrogenation of diesel, with a capacity of 2.6 million tons per year and world-class standards, was recently calibrated at Shijiazhuang Refining & Chemical Complex. All performance indicators of this unit have met the expected goals, enabling it to produce diesel that meets national V standards. On December 23, 2011, this system completed the entire process and produced qualified products. This technology can reduce the sulfur content in diesel products by over 80% compared to current standards, thereby effectively reducing air pollution; compared with traditional hydrogenation technologies, it can also cut the energy consumption of the facilities by more than 40%. The purpose of this calibration is to comprehensively evaluate the performance of the unit after nearly 7,000 hours of operation, including reaction conditions, product properties, chemical hydrogen consumption, product distribution, and the unit’s energy consumption. The calibration is carried out in stages such as a cycle ratio of 2.0 (National IV, National V) and a cycle ratio of 1.5 (National V). By comparing the data from these various stages, the impact of different cycle ratios on the material balance of the equipment, as well as on hydrogen and energy consumption during the production of National V diesel, is examined. This approach aims to assess the technical feasibility of producing ultra-low sulfur diesel and to identify optimal process operating conditions. This calibration provides a basis for optimizing future production and carrying out technical upgrades, while also accumulating technical experience.