Review of the basic design for the Yulin Chemical 15 million tons/year demonstration project for clean and efficient conversion of coal based on different quality levels

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From April 1st to 3rd, the review meeting for the basic design of the railway dedicated line, air separation unit, 330/110kV substation, and power supply lines for the first phase of the olefins, aromatics, and advanced processing project of Shaanxi Coal Group Yulin Chemical’s 15 million tons per year coal conversion demonstration project (referred to as Phase 2, Stage 1) was successfully held in Xi’an. This review work was entrusted to Zhongyi Wood Engineering Co., Ltd., with experts in railway transportation and cost estimation invited to participate. The meeting heard reports from China Railway Xi’an Survey and Design Institute Co., Ltd., China Global Engineering Corporation, and China Energy Construction Group Shaanxi Electric Power Design Institute Co., Ltd. respectively. Subsequently, the participants divided into groups to discuss and formulate their respective review opinions. The meeting carefully considered these group opinions before finally arriving at the expert group’s review opinion. The experts present agreed that the basic design documents meet the requirements set out in the \"Procedures for Pre-feasibility Studies, Feasibility Studies, and Design Documents for Railway Construction Projects\", the \"Regulations on the Design Elements for Foundations of Petrochemical Plants\", and the \"Requirements regarding the Depth of Preliminary Design for Power Transmission and Transformation Projects\", and can thus serve as a basis for subsequent detailed design. Wang Weifeng, deputy general manager of Yulin Chemical, gave an introduction to the Phase 1 of Project 2, covering aspects such as design and procurement, construction progress, and key milestones. He pointed out that the Phase 1 of Project 2 serves as a strong support for the Shaanxi Provincial Party Committee and Provincial Government in building a \"trillion-yuan modern energy industry cluster,\" and it is also a practical example of the group company’s efforts to optimize the industry, adjust its structure, and achieve incremental growth. He hopes that the experts attending the meeting will conduct a thorough review of the basic design with a professional perspective and a rigorous attitude, in order to promote the construction of the project on a high starting point, with high standards and high quality. Phase 1 of Project Phase 2 utilizes 9 3,500-ton-class space furnaces (based on the space coal gasification technology), integrating a range of industry-leading technologies to create the world’s largest coal-based cogeneration system. Centered on the clean and efficient conversion of coal into different grades, the project establishes a full industrial chain ranging from coal to syngas, and then to olefins/aromatics, ultimately leading to high-value new materials. It is designed to produce over 4 million tons per year of chemical products such as polyolefins and aromatics, thereby enabling the transformation of coal from a fuel source into materials with higher added value. At the same time, the project includes the construction of a million-ton-scale CCS (carbon capture and storage) facility, and it employs zero-waste-water discharge technology to ensure that pollutant emissions are at extremely low levels, thereby promoting the green and low-carbon transformation of the coal chemical industry.