All the key equipment for the PSA unit, which is essential for the first phase of the Olefins, Aromatics and Advanced Processing project under Yulin Chemical’s 15 million tons per year demonstration project for clean and efficient conversion of coal into various products, has been installed

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On March 31, 2026, all 30 key pieces of equipment for the PSA unit, which is an essential component of the first phase of Yulin Chemical’s 15 million tons per year demonstration project for the clean and efficient conversion of coal into various products such as olefins, aromatics, and other refined products, were installed in place. The maximum weight of a single core adsorption tower in a PSA unit is approximately 14.2 tons, with a diameter of 1.5 meters and a total height of 10 meters. The PSA unit utilizes technology from the Southwest Research Institute; it is designed to achieve a hydrogen purity of 99.9% with a hydrogen recovery rate of ≥80%. The project is scheduled to be completed on March 30, 2027. According to Donghua Technology, the methanol production capacity of the second phase of Shaanxi Coal Yulin Chemical is 2×2.8 million tons per year, making it the largest single-series facility under construction in the world at present. The two pressure swing adsorption hydrogen recovery units in the methanol synthesis plant of the first-phase project of the Olefins, Aromatics and Deep Processing Facility of Shaanxi Coal Group Yulin Chemical Co., Ltd.’s 15 million tons per year demonstration project for clean and efficient conversion of coal into various products, utilize technology developed by Southwest Research Institute. The hydrogen production capacity of a single unit is 6,500 m3/h. The pressure swing adsorption hydrogen production system used in Yulin Chemical Company’s 1.8 million tons per year ethylene glycol plant is based on the technology developed by the Southwest Research Institute. The project produces 480,000 standard cubic meters of hydrogen per hour, making it the world’s largest PSA hydrogen production facility based on coal chemical technology. The PSA hydrogen production plant was put into operation in September 2022 and passed the inspection and acceptance in April 2023.