China Coal Yulin 2.2 million Tons Methanol 900000 Tons Polyolefin Coal Chemical Project

1. Project Overview and CCT Key Nodes

progress of One-off CAC across the 1.1 Line

on July 12, China Coal Yulin Coal Deep Processing Base, located in Yuheng Industrial Zone, Yulin, Shaanxi Province, China, completed the whole plant. The 2.2 million-ton/year methanol synthesis plant contracted by EPC of Ningbo Project was successfully handed over, marking the completion of 48 units of the whole project at one time and officially entering the linkage commissioning stage. The total construction period of the project is 754 days, 36 days ahead of schedule, setting a new record for the construction speed of coal chemical industry of the same scale in China. This methanol plant is china single series largest methanol synthesis unit.

1.2 Project Policy and Industrial Chain Positioning

with a total investment of 23.888 billion billion yuan, the project is the first large-scale coal chemical demonstration project approved by the Ministry of Ecological Environment after China put forward the "3060" double carbon target. Relying on the complete integrated chain of "coal mine-methanol-olefin-high-end polyolefin" and adopting the "two joint ventures" low-carbon operation mode, it is the benchmark for China's coal clean conversion and high-end transformation of coal chemical industry, and has long-term reference value for overseas buyers.

2. core device configuration, process and construction sequence

the project covers methanol synthesis, DMTO olefin production, polyolefin and supporting public works. The core production capacity and technology are clear: 2.2 million tons/year methanol adopts Zhuangxin Wanfeng David process to produce MTO grade refined methanol; The 2.35 million-ton/year DMTO-III olefin production plant completed the Zhongjiao oven on June 23. Supporting 900000 tons of flexible adjustable polyolefin production capacity; Circulating water and three-dimensional storage are all contracted by Ningbo Project, carrying China's top water-saving cooling and modular construction technology. Delivery rhythm in stages: warehouse in March, circulating water in April, TMTO unit in June and methanol synthesis unit in July are all handed over, and multi-unit peak-shifting construction ensures the overall construction period.

Interpretation of 3. Process Advantages and Construction Difficulties

3.1 low carbon and construction innovation technology

the methanol synthesis route stably produces high-purity raw materials and is suitable for downstream polyolefin production. The circulating water system is the largest water-saving and fog-eliminating device in China and is suitable for green production in the northwest water-scarce area. The storage large-span grid adopts a new overall upgrading process, which has the reference value of global coal chemical projects and meets the needs of overseas low-carbon factories.

3.2 Project Construction Core Challenges

the dead weight and pipeline wall thickness of super-large single series of equipment reach the upper limit of the industry, the pipelines in the factory are dense, and the sealing and welding precision control of high-pressure synthesis gas pipelines are strict. The manufacturing cycle of large equipment such as synthetic towers and heat exchangers is long, which is superimposed on the low-temperature construction environment in northwest China for two consecutive years. The construction difficulty is significantly higher than that of conventional coalification projects, which reflects the mature capability of China's large-scale coal chemistry projects.

Impact of 4. Production on Global Chemical Trade and Industry Chain

the project supports the direct supply of raw coal from its own Dahai coal mine, eliminating the cost of long-distance raw material transfer and outstanding cost competitiveness. With an annual output of 2.2 million tons of methanol and 900000 tons of high-end polyolefin, the methanol/polyolefin output ratio can be flexibly adjusted to hedge the fluctuation of international crude oil and olefin prices. At the industrial level, the project verifies the feasibility of China's large-scale low-carbon coal chemical industry landing, and for overseas traders, northwest China has added stable MTO methanol and high-end polyolefin sources, optimized China's overall supply distribution, eased the pressure of centralized supply in the east, and enriched procurement channels in Southeast Asia and South Asia. In the high oil price cycle, the cost advantage of China's coal products will be further highlighted, long-term change in the Asian methanol, polyolefin regional supply pattern.