Core Viewpoint - The successful operation of the No. 2 gasifier at Datang Inner Mongolia Duolun Coal Chemical Co., Ltd. has set a world record for continuous high-load operation using low-quality lignite as raw material, demonstrating the feasibility of utilizing such coal in chemical production [1][4]. Group 1: Project Overview - The Datang Inner Mongolia Duolun Coal Chemical project is located in Duolun County, Xilin Gol League, and is the first large-scale coal chemical base constructed by China Datang Corporation [1]. - This project is the first modern coal chemical project in China to produce coal-based olefin products using low-quality lignite, aligning with national energy development strategies and industrial policies [1]. Group 2: Technical Details - The project consists of seven main production units, including lignite pre-drying, gasification, syngas purification, methanol production, methanol-to-propylene, and polypropylene production [4]. - The gasification unit, which is the core of the project, utilizes three Shell gasifiers that consume 8,610 tons of low-quality lignite daily, producing 525,000 standard cubic meters of effective syngas per hour [4]. Group 3: Achievements and Innovations - The gasifier has achieved a continuous operation of 319 days, setting a world record for gasifiers using lignite [1][4]. - The project has successfully addressed challenges related to the high sulfur content, ash content, and other properties of low-quality lignite, leading to optimized operations and improved stability [4]. - The successful long-term operation of the gasifier validates the potential for using low-quality lignite in chemical production, paving new paths for coal selection in the coal chemical industry [4].