【Ten Years of Rapid Development in Chemical Processing Equipment】For the first time in China, a full-scale venting test of a 10-megapascal high-pressure hydrogen pipeline was successfully carried out from 2893 to 2025

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Let’s give praise and support to the achievements made in China’s chemical engineering technology and equipment; your participation in discussions is the greatest encouragement. **********************【Ten Years of Progress in Chemical Engineering Equipment】A continuously updated summary post is available – feel free to join the discussions: https://bbs.hcbbs.com/thread-3576046-1-1.html ***************** On December 10th, China carried out its first full-scale venting test for high-pressure hydrogen pipelines at 10 megapascals. This test served as a kind of “safety simulation” for such pipelines, filling a technical gap in this field in China and marking a new level of advancement in the safety technologies related to hydrogen pipelines in our country. https://p3-sign.toutiaoimg.com/tos-cn-i-axegupay5k/07c96e921c974d4ab1525778ffb2580e~tplv-tt-origin-web:gif.jpeg?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1766033108&x-signature=UremHCPBXuHmcOGYFErXX1GsqvE%3D To achieve widespread use of hydrogen energy, it is essential to ensure the safe and stable transport of hydrogen over long distances. During pipeline operation, planned maintenance may be required at times, or emergencies can occur; in such cases, it is necessary to release the hydrogen inside the pipeline quickly and safely – this process is known as \"venting\". How to ensure that high-pressure hydrogen does not pose a danger or cause any impact on the outside environment during venting is precisely the core issue to be addressed by this venting test. This experiment established a complete simulation testing platform that accurately replicated the various scenarios in which hydrogen needs to be released during the actual operation of pipelines, including safe release without ignition and release during ignited combustion, while also testing the safety performance under different pressure and operating conditions. The research findings will be directly applied to the construction of future large-diameter hydrogen pipelines, thereby improving the safety level of pipeline operation. https://p3-sign.toutiaoimg.com/tos-cn-i-tjoges91tu/90a9bce6171524fe560fdafba50c6045~tplv-tt-origin-web:gif.jpeg?_iz=58558&from=article.pc_detail&lk3s=953192f4&x-expires=1766033108&x-signature=xTheM4kj8GMDu2SJ%2FFw%2B0AojRyo%3D**Yu Bin, director of the New Energy Engineering Technology Center at the Pipeline Network Group’s Engineering Technology Innovation Company, explained that through the testing platform, the system is able to obtain key parameters such as hydrogen concentration distribution, flame structure, thermal radiation intensity, and its range of influence. This enables a clear understanding of the flow and diffusion patterns of hydrogen under high-pressure conditions, covering a wide range of scenarios including pressures from 1 MPa to 10 MPa, various vertical pipe heights, different pipe diameters, and various types of flame arrestors. The success of this experiment not only resolved a key technical challenge in hydrogen storage and transportation but also provided valuable experience for the development of safety technologies related to hydrogen storage and transport in our country. The relevant achievements will help improve the safety standards in the hydrogen energy industry, promote coordinated development of all segments of the hydrogen energy supply chain, and provide a solid foundation for the large-scale use of hydrogen energy in China.