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After the technology independently developed by the Dalian Research Institute was applied to the production facilities, the purity of the hydrogen produced could reach over 99.998%, which is far higher than the standards required for hydrogen used in fuel cell vehicles. On September 9th, a side-line facility with a capacity of 500 standard cubic meters per hour, utilizing the hydrogen purification technology developed by the Dalian (Fushun) Petrochemical Research Institute for fuel cell vehicles, was successfully commissioned at Gaoqiao Petrochemical. The purity of the hydrogen produced there was over 99.998%, well above the relevant standards, marking another significant breakthrough in the development of China Petrochemical’s hydrogen industry chain. The hydrogen used in fuel cell vehicles requires a purity of no less than 99.97%, with very strict requirements regarding the levels of 14 types of impurities such as sulfur and carbon dioxide. Currently, hydrogen purification mostly relies on conventional PSA (Pressure Swing Adsorption) technology, with purified hydrogen generally serving as the feedstock. This approach presents issues such as high requirements for the feedstock, complex process flows, high equipment costs, and large space requirements. With the support of the Technology Department of the group company, Dalian Institute utilized hydrogen produced as a by-product of low-cost reforming units as raw material, and by employing a highly selective adsorbent specifically developed for targeted impurity removal, along with a rapid purification process (S-PSA) and precise timing control strategies, it developed a complete set of technologies for producing high-quality hydrogen for use in hydrogen fuel cells. This technology features low investment, small land footprint, and low energy consumption. As verified by the side-line system, the purity of the produced hydrogen is well above the standards required for hydrogen used in fuel cell vehicles**, providing a solid technical foundation for the production of high-purity hydrogen with wide-ranging applications. (Sun Baoxiang, Wang Luyao)