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]

Core Viewpoint - Jilin Petrochemical has successfully tested the world's first 1 million tons/year diesel adsorption device, marking a significant advancement in the industrial application of diesel adsorption separation technology, facilitating the company's transition from refining to chemical production [1] Group 1: Technological Advancements - The project utilizes a complete set of diesel adsorption separation technology developed jointly by Kunlun Engineering and CNOOC Tianjin Chemical Research and Design Institute, overcoming the industry's challenge of efficiently separating aromatics from non-aromatics [1] - The technology embodies the "molecular refining" concept, aiming to maximize the value extraction of each molecule with a focus on "oil when suitable, olefins when suitable, and aromatics when suitable" [1] Group 2: Economic Impact - The device uses hydrogen-refined diesel as raw material, producing non-aromatic adsorbents that can be directly supplied to ethylene cracking units as high-quality feedstock, while aromatic adsorbents are sent to hydrocracking and catalytic cracking units, creating a closed-loop industrial chain of "raw materials - processing - high-value products" [1] - This project is part of a larger transformation and upgrading initiative with a total investment of 33.9 billion yuan, making it one of the largest single investment industrial projects in Jilin Province, supporting the local traditional industry’s intelligent and digital transformation [1]