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According to reports, before that, the largest PSA hydrogen production facility built abroad had a processing capacity of 236,000 standard cubic meters per hour, while the largest domestic PSA hydrogen production plant capacity was only 75,000 standard cubic meters per hour.
According to Wang Heming, deputy general manager of Shenhua Group's Coal-to-liquids Co., Ltd., the Shenhua Group's coal-to-oil project is a national key project approved by the State Council and is the world's first commercial demonstration unit for direct liquefaction of coal. Hydrogen is the leader of the coal-to-oil project, and the hydrogen production unit is the core of the entire project. The PSA hydrogen production device can convert the coal powder provided by the coal preparation device into a synthesis gas through a partial oxidation method, and then it is processed into a high-purity product hydrogen through transformation, pressure swing adsorption, and the like.
The world's largest PSA hydrogen production plant is designed and manufactured by Sichuan Tianyi Technology Co., Ltd. This device not only ranks first in the world, but also rewrites history in terms of process design, process flow, special valves, adsorbents and many other aspects. For example, in terms of process design, the double forward can operation process with independent intellectual property rights is adopted to make the process flow simpler, the operation is more stable, and the product yield is higher. There is no precedent at home and abroad; the process flow is for the first time using 12 towers. , 4 grouping process, and for the first time, switching from 12 towers to 6 towers is realized on the program switching, which simplifies the program and makes the control system run more smoothly. With the new sealing technology, all 172 valves are guaranteed zero leakage. The use of a new air flow distributor further enhances the use efficiency of the adsorbent. At the same time, with respect to the high requirements of the coal-to-oil project, the device also solves the problem of the existing adsorbent particle size, reduces the dead space, and improves the understanding of the suction rate and the hydrogen yield. The data shows that the device has a processing gas volume of 340,000 standard cubic meters per hour, a hydrogen production capacity of 280,000 standard cubic meters per hour, a hydrogen purity of 99.9%, and a hydrogen yield of not less than 90%.
On August 13th, the reporter learned from Shenhua Group that a pressure swing adsorption gas separation (PSA) hydrogen production plant that handled a gas volume of 340,000 Nm3/hr was successfully tested at one time, and all technical indicators met the design requirements and will be in the group. The coal oil project plays a central role. This is currently the world's largest PSA hydrogen production plant. Many of these processes use technology and processes that were first adopted in the world, breaking the monopoly of foreign companies over the years in large PSA hydrogen production plants.
April 29, 2021