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 - The successful commissioning of the world's largest 2 million tons/year diesel adsorption separation unit marks a significant advancement in the integrated transformation and upgrading of the petrochemical industry in Southwest China, providing a scalable and efficient solution for the global refining industry's transition from "oil-heavy" to "chemical-heavy" production [1][2]. Group 1: Project Overview - The diesel adsorption separation unit is part of a major national petrochemical project with a total investment of 30.5 billion yuan, covering over 4,400 acres [5]. - The project commenced construction in July 2023 and is expected to be fully completed by July 14, 2025, with initial operations starting on October 18, 2023 [5]. Group 2: Technological Innovation - The unit utilizes a proprietary "diesel adsorption separation" technology developed by Kunlun Engineering and CNOOC Tianjin Chemical Research Design Institute, which allows for precise molecular-level control to separate diesel into high-quality olefin and aromatic raw materials [2]. - The process enhances raw material utilization efficiency by over 15% compared to traditional methods, while also reducing energy consumption and carbon emissions [2]. Group 3: Industry Impact - The project is expected to facilitate the transformation of Guangxi's petrochemical industry from a "fuel-type" refinery to a "chemical products and organic materials-type" enterprise, filling gaps in high-end chemical new materials in the region [5]. - It aims to support the establishment of a trillion-yuan green chemical new materials industry cluster in Guangxi, enhancing China's position in the global refining industry and contributing to national energy security and high-quality development of the chemical industry [5].