[Ten years of major development in chemical equipment] 1226-2023 The first domestic hydrogen-doped natural gas pipeline discharge jet fire test

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This post was last edited by Swimming Fish in the Desert on 2023-11-20 16:40 to look at the development of chemical technology in the past ten years and praise China's prosperity and strength in the prosperous age. It will be more lively with everyone's participation and the sea will be more exciting with you. [Ten Years of Development of Chemical Equipment] Continue to update the summary post. Welcome to participate in the discussion https://bbs.hcbbs.com/thread-3576046-1-1.html Enhance quality awareness and promote high-quality development------------------------------------------------- November 13, 2023 * * The Pipe Network Group was informed that the first domestic hydrogen-doped natural gas pipeline release jet fire test and closed space leakage and explosion test organized by the group were successfully implemented recently, filling the gap in the hydrogen-doped release and explosion verification test of long-distance natural gas pipelines in my country, and laying an important foundation for the realization of independent and controllable hydrogen-doped transportation technology for long-distance natural gas pipelines. According to reports, hydrogen-infused transportation in natural gas pipelines involves mixing hydrogen and natural gas in different proportions and then using the existing natural gas pipeline network for transportation. Hydrogen-doped natural gas can be directly utilized and can improve the quality of natural gas ； Hydrogen and natural gas can also be separated and used separately to achieve low-cost long-distance transportation of hydrogen, which is of great significance to promoting energy conservation, carbon reduction, and green development in the energy industry. This test is my country’s largest industrial verification test for hydrogen-doped natural gas combustion in pipelines. The test uses X65 steel grade, 323.9 mm diameter pipes, the venting riser height is 5 meters, the test pressure is as high as 12 MPa, and the maximum hydrogen doping ratio is 30%. The simulated closed space structure is constructed with reference to the gas pipeline valve chamber. “By obtaining parameters such as full-scale jet fire radiation intensity, closed space explosion pressure, flame temperature and length, the test reveals the flame propagation and explosion mechanism of hydrogen-doped natural gas, determines the optimal hydrogen-doping ratio for pipeline transportation, and provides data support for the establishment of a safety standard system for hydrogen-doped natural gas pipelines. ” * * said Peng Shiyao, a senior engineer at the New Energy Storage and Transportation Research Center of the Pipeline Network Group Research Institute. The reporter learned that the safety of hydrogen-doped natural gas pipelines has always been the focus of exploration and research in this technical field. Due to the characteristics of hydrogen itself, once a hydrogen-doped pipeline leaks, high temperature and high pressure will be extremely destructive. “Long-distance, large-diameter, high-grade steel and high-pressure pipeline transportation is the development trend of hydrogen energy supply in the future. Through this test, we formulated an industrial verification experimental plan to improve the model accuracy of hydrogen-doped combustion and explosion characteristics, and provide technical support for the prevention and control of risks in the transportation and operation of hydrogen-doped natural gas pipelines in my country. ”Li Yuxing, a professor at China University of Petroleum (East China) who participated in the trial, said. This test was conducted by * * The Pipeline Network Group is jointly carried out by scientific research teams such as Beijing Institute of Technology and China University of Petroleum (East China).