Group 1 - The successful commissioning of the 200,000 tons/year diesel adsorption separation unit marks a significant milestone in the Guangxi Petrochemical integrated refining and upgrading project, utilizing advanced technology to enhance production flexibility and efficiency [1][2] - The unit employs a proprietary "diesel adsorption separation" technology developed by Kunlun Engineering and CNOOC Tianjin Chemical Research and Design Institute, which allows for the separation of diesel into high-quality olefin and aromatic raw materials, addressing structural contradictions in oil supply [1] - The process integrates four core units: adsorption, residual liquid recovery, desorption agent purification, and product refinement, achieving continuous operation and high-quality output under complex conditions, thus meeting the stringent demands of industrial operations [1] Group 2 - The project, with a total investment of 30.5 billion yuan, covers over 4,400 acres and includes the construction of 14 chemical units, including a 1.2 million tons/year ethylene cracking unit and two refining units with a capacity of 200,000 tons/year for diesel adsorption and de-aromatization [2] - The team overcame eight technical challenges during the commissioning process, including controlling the activation temperature of the adsorbent and adjusting the circulation flow of the desorption agent, which contributed to a record-breaking startup speed for similar units [2] - The comprehensive utilization efficiency of raw materials in this new unit is over 15% higher than traditional processes, leading to reduced energy consumption and carbon emissions while significantly enhancing the economic benefits and risk resilience of the refining industry [1][2]