Pile foundation construction for the second-phase air separation unit at Yulin Chemical begins

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On June 2, the foundation work for the air separation unit began as part of Phase 1 of the olefins, aromatics, and advanced processing project under Yulin Chemical’s 15 million tons per year demonstration project for clean and efficient coal conversion on a differentiated basis. This marks the entry of the air separation unit into the actual construction phase, laying a solid foundation for the civil engineering work related to this unit by the end of July. Shaanxi Coal Group Yulin Chemical Co., Ltd.’s 15 million tons per year demonstration project for the clean and efficient conversion of coal into various products – involving the production of olefins, aromatics, and other derivatives. Project type: New construction. Location: Qingshui Industrial Park, Yushen Industrial Zone, Yulin City, Shaanxi Province. Land area and total investment: The project is divided into a northern area and a southern area; the northern area covers an area of 62.67 hm2, while the southern area covers 1016.38 hm2. The total investment amounts to 175.973 billion yuan, of which 8.191 billion yuan is invested in environmental protection, accounting for 4.65%. Staffing and operation system: The factory’s operating hours are 8,000 hours per year, with 5,529 employees assigned to this project. Construction contents: The project includes the main structure, storage and transportation facilities, utility systems, environmental protection measures, as well as supporting facilities. The main production facilities include 38 units such as coal pyrolysis units and pulverized coal gasification units; the storage and transportation facilities comprise 6 circular enclosed coal silos, 173 storage tanks, and 77 loading/unloading units; the utility systems include 6 supercritical boilers and 6 supercritical extraction units (used as public heat sources in the park); the environmental protection facilities consist of 9 waste gas/waste liquid incineration units, 14 wastewater pretreatment units, and 2 comprehensive wastewater treatment plants; the supporting facilities include the park’s water supply system, waste dump sites, and hazardous waste disposal facilities. The main products of the project include polyolefins, polyesters, biodegradable plastics, battery electrolytes, etc. The main facilities include a 13.5 million tons/year coal pyrolysis plant (including hydrogen-assisted pyrolysis), a 5.6 million tons/year methanol plant, a 1.48 million tons/year methanol-to-olefins plant, a 31,500 Nm3/h hydrogen production plant via water electrolysis, a 1.9 million tons/year diesel hydrogenation plant, a 1.5 million tons/year aromatics reforming complex, a 700,000 tons/year light hydrocarbon aromatization plant, a 2.2 million tons/year purified terephthalic acid plant, a 2.4 million tons/year polyester plant, a 260,000 tons/year polycarbonate plant, a 300,000 tons/year polypropylene (PP) plant, a 300,000 tons/year polyethylene (FDPE) plant, a 400,000 tons/year polyvinyl acetate-co-vinyl acetate (EVA) plant, a 50,000 tons/year polyolefin elastomer (POE) plant, a 1 million tons/year dimethyl carbonate (DMC) plant, a 220,000 tons/year superabsorbent resin plant, a 300,000 tons/year polybutylene terephthalate-co-butylene adipate (PBAT) plant, a 67,800 tons/year biodegradable biomaterial (PBS) plant, a 30,000 tons/year polytetramethylene ether glycol (PTMEG) plant, a 210,000 tons/year ethylene carbonate (EC) plant, an 80,000 tons/year poly3-hydroxypropionic acid (PPL) plant, a 330,000 tons/year polyether polyol plant, a 700,000 tons/year propylene oxide plant, a 150,000 tons/year ethyl methyl carbonate (EMC) plant, a 600,000 tons/year diethyl carbonate (DEC) plant, and a 600,000 tons/year polypropylene carbonate (PPC) plant, along with supporting utility systems and auxiliary facilities.