Review of 10 general contract technical specification documents for the 800,000-ton-per-year coal-to-olefins project at Wuciwan, Zhundong, in Xinjiang Shanneng Chemical Industry

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Recently, a review meeting for 10 general contract technical specifications for Xinjiang Shanneng Chemical’s 800,000-ton-per-year coal-to-olefins project in Wucaiwan, Zhundong, was held at the Yankuang Building. The meeting was held in a hybrid online-offline format, with 34 professional technical experts from the company’s Chemical Industry Technology Committee invited to attend. This review session will focus on key units such as gasification, purification, polyethylene, and polypropylene, conducting a thorough examination of the accuracy, feasibility, and rationality of the technical specifications. Systematic verification and evaluation will be carried out from various aspects including process design, equipment selection, safety and environmental protection, as well as electrical and instrumentation systems, with guiding opinions and recommendations provided. Xinjiang Shanneng Chemical Co., Ltd.’s 800,000 tons per year coal-to-olefins project in Wucuiwan, Zhundong. Project name: Xinjiang Shanneng Chemical Co., Ltd.’s 800,000 tons per year coal-to-olefins project in Wucuiwan, Zhundong. Constructor: Xinjiang Shanneng Chemical Co., Ltd. Location of the project: Modern Coal Chemical Industry Demonstration Zone, Zhundong Economic and Technological Development Zone, Xinjiang (west side of Shenqi Road, at the entrance of Open-Pit Mine No. 4 in Huoshao Mountain Industrial Park, Wucuiwan Mining Area). Total investment for the project: 2,085,801.19 million yuan, of which 1,667 million yuan is allocated to environmental protection measures, accounting for 8.0% of the total project investment. Construction scale and overview: This project uses coal from the Wucaiwan No. 4 open-pit mine as raw material, and produces MTO-grade methanol (an intermediate product) through coal gasification under pressure, shift reaction and heat recovery, low-temperature methanol washing, and methanol synthesis ； MTO-grade methanol is then processed through MTO and olefin separation to obtain polymer-grade ethylene and polymer-grade propylene monomers ； Polyethylene products are produced through the polymerization of ethylene ； Propylene is polymerized to produce polypropylene products. The process technology planned for the main production units of this project is close to or reaches the current international advanced level. Construction contents: The project construction includes the main structure, storage and transportation facilities, utility systems, environmental protection measures, as well as supporting projects. 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 – totaling 13 production units. In addition to the main products of polypropylene and polyethylene, by-products such as sulfur, MTBE, C5, C6, liquefied gas, and wax components are also produced. The storage and transportation engineering includes 6 circular, enclosed coal silos, 36 storage tanks, and 8 loading and unloading systems ； Utilities include 2 (1 in service and 1 standby) 380-ton/hour high-temperature and high-pressure coal-fired boilers, etc ； Environmental protection projects include 1 set of waste gas incineration equipment and 1 comprehensive sewage treatment plant, among others ； The supporting projects include the park’s water supply system, the waste dump in the park, and hazardous waste disposal facilities.