60% model review of the 5.6 million tons/year methanol synthesis unit for Phase 1 of Yulin Chemical Phase II project

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Recently, a model review meeting for 60% of the 5.6 million tons per year methanol synthesis unit, which is part of Phase 1 of Stage 2 of Shaanxi Coal Group Yulin Chemical Co., Ltd.’s 15 million tons per year demonstration project for clean and efficient conversion of coal into various products, was held at Hefei Donghua Engineering Technology Co., Ltd. As the core leader of the project, Yulin Chemical, in collaboration with the design firm Donghua Engineering Technology Co., Ltd., carried out systematic localization adjustments and technical optimizations for the advanced Lurgi process package used in this facility. At the review meeting, senior experts from the coal chemical industry conducted in-depth discussions on key aspects such as the feasibility of the process route for the plant model, the suitability of equipment selection, the rationality of the overall layout, and compliance with safety and environmental regulations. Through multiple rounds of discussion and refinement, the review team unanimously recognized the scientific validity and forward-thinking nature of this model in terms of technical solutions and engineering design. It was deemed to not only fully leverage the technical advantages of the Lurgi process but also achieve innovative improvements based on the actual conditions of the project, thereby providing a solid foundation for the high-standard construction and efficient operation of the facility in the future. The successful completion of this review marks a solid foundation for the further detailed design of the facility, as well as for the efficient progress of equipment procurement and project construction. Recently, Yulin Chemical Company, together with the process package provider Air Liquide Global Engineering Technologies Germany GmbH, the detailed design firm Donghua Engineering Technology Co., Ltd., and the relevant equipment suppliers, successfully carried out a centralized review of 60% scale models of the syngas purification unit for Phase 1 of Project 2 at Donghua Company. This review covers key units such as conversion and heat recovery, deaeration tanks, sulfur recovery, CO2 compressors, refrigeration plants, low-temperature methanol washing, and utility systems, marking this stage as a solid foundation for subsequent procurement and construction of the facility. As an important milestone in the project design process, the 60% model review serves as a crucial link between the detailed design and the construction design. It focuses on assessing the rationality and feasibility of key elements such as the structural framework of the equipment, piping layout, space for operation and maintenance, and safety and environmental protection facilities. During the review period, the three parties formed a professional technical team that, adhering to the principles of \"checking each unit individually, verifying each system separately, and optimizing every detail\", used 3D modeling techniques to conduct comprehensive scenario-based simulations of the device. In-depth discussions were held on key review aspects such as the main pipeline layout, valve bank configuration, position of equipment connections, space for lifting and maintenance, installation of ladder platforms, and layout of the fire protection system. Special attention was paid to verifying the suitability of the process package technology provided by Air Liquide Global Engineering Technologies Germany GmbH; at the same time, the equipment arrangement and pipeline integration plans in Donghua Company’s detailed design were optimized, thereby helping to avoid potential risks at the design stage. Through 12 days of efficient collaboration, the technical personnel from all three parties developed a number of high-quality optimization suggestions, effectively identifying potential risks such as spatial collisions and operational difficulties. They also established the key criteria for compiling the pipeline material list, thereby achieving the review objectives of \"process compliance, safety and controllability, constructability, and ease of maintenance.\" This review not only implemented the previous design recommendations but also established a regular communication mechanism among the owner, the process package supplier, and the design institute, paving the way for the procurement of 70% of the pipeline materials and the review of 90% of the models in the future. The 15 million tons per year demonstration project for the clean and efficient conversion of coal into various products at Shaanxi Coal Group Yulin Chemical Co., Ltd. – focusing on the production of olefins, aromatics, and products derived from their further processing – builds upon the first-phase project. Through the systematic integration of coal pyrolysis, coal/semi-coke gasification, and downstream processing technologies, this project aims to further expand and extend the industrial chain. It seeks to explore new pathways for the combined development of coal-based olefins and coal-based aromatics, with the goal of producing four categories of high-value-added products: high-performance materials, battery electrolyte solvents, biodegradable materials, and special oils. Ultimately, chemical products such as polyolefins, polyesters, polycarbonates, polyether polyols, EVA, POE, SAP, DMC, DEC, EMC, and EC will be manufactured, thereby facilitating the advancement of the coal chemical industry in terms of sophistication, diversity, and low carbon emissions. Following the principle of \"overall planning and phased implementation,\" the Phase 2 project is divided into Phase 2, Stage 1 projects and subsequent projects. Phase 1 of Phase II covers an area of approximately 9,200 mu, with an estimated total investment for the project at around 62 billion yuan. Coal gasification will utilize 9 3,500-ton-class space furnaces. The main facilities to be built include those for producing 5.6 million tons per year of methanol from coal, as well as 1.48 million tons per year of olefins from methanol; in addition, downstream processing units will be established to produce 8 different types of products such as polyethylene, polypropylene, EVA, and SAP, for a total of 2.77 million tons per year.