The gas release buffer tank for the last PSA unit in Yulin Chemical’s extra-large pressure swing adsorption hydrogen production plant was successfully lifted into place

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The exhaust gas buffer tank for the last PSA unit of Shaanxi Coal Group Yulin Chemical’s ultra-large pressure swing adsorption hydrogen production plant was successfully lifted into place. Author/Source: Gas Separation; Date: 2020-08-19; Clicks: 16. Recently, the exhaust gas buffer tank for the last PSA unit – the largest coal-based hydrogen production PSA plant in the world, with a capacity of 480,000 Nm3/h – of Shaanxi Coal Group Yulin Chemical Company was successfully installed, as part of the overall project managed by Southwest Chemical Engineering Research and Design Institute Co., Ltd. This marks the successful completion of the installation of the PSA units used for syngas purification in this project. It is reported that the lifting of these PSA devices took 24 days, with a total of 48 devices being lifted. The total weight of these devices was 1,607.80 tons; the heaviest individual device weighed 59.12 tons and stood 34.5 meters tall. The successful completion of the lifting work for the PSA unit equipment has laid a solid foundation for the subsequent installation of the steel structure and process pipelines. The 1.8 million tons per year ethylene glycol production project of Yulin Chemical Company, belonging to Shaanxi Coal Group, is part of the group’s demonstration project for the utilization of coal in order to produce new chemical materials. Hydrogen is the feed gas for the synthesis of ethylene glycol, and PSA hydrogen production is an important step in the entire process. The PSA hydrogen production unit accompanying this project has a total raw gas processing capacity of 570,000 Nm3/h, with a total hydrogen production capacity of 480,000 Nm3/h. Upon completion, it will be the largest coal-to-hydrogen PSA plant in the world to date. It represents another major breakthrough in China’s PSA hydrogen production technology, following the 280,000 Nm3/h ultra-large PSA hydrogen production project built by Shenhua in Ordos in 2008. In June 2019, Southwest Chemical Research and Design Institute Co., Ltd. and Shaanxi Coal Group Yulin Chemical Company signed a supply agreement for a super-large pressure swing adsorption hydrogen production unit with a capacity of 480,000 Nm3/h, to be used in connection with an ethylene glycol production project with an annual capacity of 1.8 million tons ； According to the project schedule, the design work for this device was completed on June 5 this year ； On July 11 this year, the first lift of the first unit in the 480,000 Nm3/h ultra-large pressure swing adsorption hydrogen production plant – the downstream gas buffer tank (110621-V-101B) – was successfully completed.