Design bidding for Xinjiang Shanneng Zhundong Wucaiwan 800,000 tons/year coal-to-olefins project, with a total investment of 20.8 billion yuan

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Tender for the design of Xinjiang Shanneng’s 800,000 tons/year coal-to-olefins project 2025-01-07 On December 28, 2024, Xinjiang Shanneng Chemical Co., Ltd. issued a public tender for the overall project management, chief supervision, technical services, basic design, and some detailed designs for its 800,000 tons/year coal-to-olefins project in Wucaiwan, Zhundong. Scope of the tender: The bidder, acting as the main design agency for the 800,000 tons per year coal-to-olefins project at Wuciwa Bay in Zhundong, Xinjiang Shanneng Chemical Co., Ltd., will be responsible for the overall foundation engineering design and detailed engineering design of the entire project (including overall management tasks). The bidder shall be in charge of optimizing and improving the overall project design, designing the foundation elements for all the plant’s utility and auxiliary systems, carrying out some of the detailed engineering work, providing digital delivery services, as well as offering related technical support. Specific requirements are detailed in the technical specifications. Project Overview: This project is located in the Zhundong Economic and Technological Development Zone of Changji Hui Autonomous Prefecture, Xinjiang Uygur Autonomous Region. Using coal as raw material, it employs processes such as pressurized gasification of coal, purification, methanol synthesis, and methanol-to-olefins conversion; in addition, green hydrogen is integrated into the olefins production process. A new coal-to-olefins facility with an annual capacity of 800,000 tons will be built. The project design calls for 3.9021 million tons of raw coal per year, as well as 412,300 tons of fuel coal per year (this amount will drop to 233,900 tons after 5 years of using green hydrogen). The annual consumption of fresh water is 7.1064 million cubic meters (it will fall to 6.6730 million cubic meters after 5 years of using green hydrogen). The main process units of this project include an air separation unit, gasification units (coal gasification, shift), purification units (low-temperature methanol washing, cryogenic treatment, sulfur recovery, CCUS), a methanol synthesis unit, a methanol-to-olefins unit (MTO, olefin separation, SCU, 1-butene), polyethylene production units, polypropylene production units, and a hydrogen production unit via water electrolysis. The main facilities to be constructed include 3 oxygen production units with a capacity of 75,000 Nm3/h each (2 driven by steam and 1 driven electrically), a methanol production plant with an annual capacity of 2.2 million tons (involving gasification, shift reaction, heat recovery, and purification using 657,000 Nm3/h of effective gas (CO+H₂)), a sulfur recovery plant with an annual capacity of 20,000 tons, an olefin production plant based on methanol with an annual capacity of 2.2 million tons, an olefin separation plant with an annual capacity of 800,000 tons, a steam cracking plant with an annual capacity of 50,000 tons, a plant for producing 1-butene from butane derivatives with an annual capacity of 15,000 tons, a polypropylene (PP) production plant with an annual capacity of 450,000 tons, and a polyethylene (PE) production plant with an annual capacity of 450,000 tons. The total investment in the project amounts to 20.858 billion yuan, of which 1.667 billion yuan is allocated to environmental protection measures, accounting for 8.0% of the total investment in project construction. The hydrogen produced as a by-product of the methanol plant in this project, along with the hydrogen generated by the water electrolysis hydrogen production unit, is used as raw material for the methanol to olefins plant, the polypropylene plant, and the sulfur recovery plant. The hydrogen production system using electrolysis of water employs an alkaline electrolysis method to produce 12,000 Nm³/h of hydrogen and 6,000 Nm³/h of oxygen. In the base year, 12 units of 1000 Nm³/h electrolytic water hydrogen production systems of Series 1 were installed; thereafter, 12 units of such systems per series were added each year. By the tenth year, a total of 10 series comprising 120 units of 1000 Nm³/h electrolytic water hydrogen production systems would have been built, thereby enabling the gradual increase in the supply of green hydrogen and green oxygen over ten years.