The review of the main model for the hardness removal of gasification ash water in the gasification unit of the China Coal Yulin Coal Deep Processing Base project has been successfully completed

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Recently, the review of the main model for hardness removal from gasification ash water in the gasification unit of the China Coal Yulin Coal Deep Processing Base project was successfully completed. This review meeting was led by the environmental engineering team. The design team began by examining the flowchart for removing hardness from gasification ash water, systematically analyzing the design logic and functional roles of each subsystem, and then presenting a detailed report on the overall design plan. Subsequently, the project team from Tianchen Engineering Co., Ltd. held in-depth discussions with the client regarding the key aspects of model review. Regarding key equipment, pipeline layout, system integration, and other aspects, the design team used 3D models to demonstrate the various elements, carefully checking each detail and answering questions, to ensure that the design plan is both feasible and precise. The successful completion of this model review not only marks an important milestone in the project but also, through collaborative analysis by various parties, provides guidance for advancing the detailed design in the next phase and lays a solid technical foundation. According to sources in the gasification sector, on September 29th, the core structure of Gasification Frame I for China Coal Yulin Phase II project was successfully completed. Following the successful completion of Gasification Frame II, both core units were erected one after another; this achievement of having both frames completed marks the successful conclusion of the construction phase for the project’s core units. Vaporization Framework I is a high-rise reinforced concrete frame-shear wall structure with a floor area of 3,568㎡ and a building area of 23,641㎡. It has 13 floors and a total height of 105m; it serves as the core component of the project, and its construction presents high standards and significant challenges. The gasifier adopts the AP (GE) semi-waste-boiler process with cooling, and is equipped with a water-coal slurry radial syngas cooler (RSC); this represents a large-scale demonstration project for the pressure-driven gasification of water-coal slurry using the AP (GE) semi-waste-boiler process. For the second phase of China Coal’s project, 4 water-coal slurry gasification units are to be constructed, with one additional unit reserved for future use. The nominal capacity of each unit is 2,860 tons of dry coal per day, resulting in a total effective gas output of 616,000 m3/h (CO + H2) ； 5 sets of coal grinding units are provided, with 1 additional set reserved. The preliminary investment estimate for the China Coal Yulin Coal Deep Processing Base project is 23.888 billion yuan. The main construction activities include producing 2.2 million tons per year of methanol and 900,000 tons per year of polyolefins; at the same time, the existing first-phase coal chemical plant will be optimized and upgraded, with projects for producing 250,000 tons per year of LDPE/EVA through chain extension and addition being carried out. The main units of the project include air separation, gasification, purification, sulfur recovery, methanol synthesis, MTO, olefin separation, 3 polyolefin units, and 1 EVA unit, among others. Completion of construction and commissioning are expected by mid-2026. Once the project is put into operation, it will effectively promote local economic and social development as well as the optimization and upgrading of the industrial structure; during peak periods, it can create employment opportunities for tens of thousands of people. By then, China Coal Shaanxi Company will further enhance the new advantages of its role as the leading enterprise in the industrial chain, promote the development of coal chemicals in a direction toward higher quality, greater diversity, and lower carbon emissions, as well as foster integrated development among coal, coal-fired power, and new energy sources, thereby creating a robust industrial and value chain.