【Ten Years of Rapid Development in Chemical Equipment】2241-2025: China’s first project for the in-depth processing of C5 compounds in the coal chemical industry was completed and put into operation in Yulin
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Give praise and encouragement to the achievements made in China’s chemical engineering technology and equipment; your participation in discussions is the greatest encouragement. **********************【Ten Years of Great Development in Chemical Engineering Equipment】Regularly updated summary posts – feel free to join the discussions: https://bbs.hcbbs.com/thread-3576046-1-1.html ***************** On March 6, 2025, it was reported by Shaanxi Tanwei Rixin Chemical Co., Ltd. that its 50,000 tons per year carbon pentane deep processing project has started trial production, with qualified products being produced. This is the first industrial project in China for the in-depth processing of C5 compounds produced as a by-product of coal-based olefin production, enabling the efficient comprehensive utilization of by-products from coal chemical processes. The project is located in the Yuheng Industrial Zone of Yulin City, Shaanxi Province, with a total investment of 280 million yuan. It uses carbon pentane produced as a by-product of coal-to-olefins production as raw material, and employs proprietary technology for further processing. The facility can produce 19,000 tons of methyl tert-butyl ether (an intermediate), 10,000 tons of isoprene, 2,000 tons of 1-pentene, 2,000 tons of tert-butanol, and 2,000 tons of methyl tert-butyl ketone annually. Most of these products serve as raw materials for the synthesis of fine chemicals and can be widely used in industries such as fragrances and pharmaceuticals. Among them, isoprene fills the gap in the central and western regions for the production of isoprene through coal chemical routes.
The project was approved for registration in April 2021, construction began in August 2023, equipment installation was completed in September 2024, and trial production started on February 8 of this year. At present, the facility has completed all processes; its production capacity has reached 100% of the designed level. More than 6,700 tons of C5 have been processed, and over 900 tons of isoprene products have been produced, with all products meeting the top-grade standards set by national regulations. As one of China’s four major modern coal chemical industry bases, Yulin currently has 4 MTO (coal (methanol) to olefins) plants. While producing polyolefin products, these plants also generate some butane and mixed pentane compounds, with the output of mixed pentane amounting to around 200,000 tons per year. Based on the compositional characteristics of the C5 compounds produced as by-products in coal chemical industry, Prodigy Chemical has worked closely with institutions such as Tsinghua University, Beijing University of Chemical Technology, and the Chinese Academy of Sciences to develop new technologies for their further processing. These technologies enable the separation of various components, allowing for the production of new products such as methyl tert-butyl ether, isoprene, tert-butanol, methyl tert-butyl ketone, and 1-pentene.
【Ten Years of Rapid Development in Chemical Equipment】Pilot-scale calibration completed for the green synthesis process of MDI using the urea method without phosgene 2240-2025 https://bbs.hcbbs.com/thread-5681562-1-1.html (Source: Haichuan Chemical Industry Forum)
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