Numerical simulation of leakage and diffusion distribution of natural gas and hydrogen mixtures in a closed container

Li, Hao; Cao, Xuewen; Du, Honglin; Teng, Lin; Shao, Yanbo; Bian, Jiang

doi:10.1016/j.ijhydene.2022.08.142

Cited by 30 publications

(4 citation statements)

References 38 publications

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“…11 shows a flow chart from hydrogen leakage to occurrence of accidents. During the literature research process, it was found that the current behavior of hydrogen leakage, calculation of explosion overpressure, and determination of safety distance were mostly obtained through simulation software [104][105][106][107][108]. So far, the partial evolution mechanism of accidents is still unclear, such as the kinetic mechanism of high-pressure hydrogen leakage reaction and the synergistic damage effect of hydrogen and other components on materials, so further model optimization and on-site experiments are necessary [109].…”

Section: Causes Of An Accidentmentioning

confidence: 99%

Risk Identification and Safety Technology for Hydrogen Production from Natural Gas Reforming

Feng,

Gu,

Pang

et al. 2024

ChemBioEng Reviews

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The hydrogen production from natural gas has advantages of low investment, low carbon emission, and high hydrogen production rate. This paper briefly describes the technical overview of hydrogen production from natural gas reforming and identifies its risk factors. According to the dangerous characteristics of high reaction temperature, easy leakage of reaction medium, flammability, and explosion in the process, the intrinsic safety of the process is discussed in combination with relevant research and industrial experience. The safety requirements of key equipment and materials are introduced in detail, followed by the optimization methods of process safety that can be taken in the engineering process. Besides, the accident prevention measures for emergency shutdown and fire explosion are summarized. Finally, the future research demands are put forward from the perspective of research and development, which is instructive for the safe hydrogen production from natural gas in the future.

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Section: Causes Of An Accidentmentioning

confidence: 99%

Risk Identification and Safety Technology for Hydrogen Production from Natural Gas Reforming

Feng,

Gu,

Pang

et al. 2024

ChemBioEng Reviews

View full text Add to dashboard Cite

show abstract

“…At present, there are parallel CFD programs, such as GASFLOW-MPI developed by Karlsruhe Institute of Technology in Germany, which has been used to predict the flow [81], diffusion [82,83], combustion and explosion of hydrogen and other gases [84]. Li et al [85] carried out numerical simulation on the leakage of hydrogen-mixed natural gas, and found that the higher the proportion of hydrogen-mixed natural gas, the longer the duration of the dangerous area after the leakage. Olvera and Choudhuri [86] used standard k-e turbulence model to compute dispersion patterns of hydrogen and methane and found that the potential risk of hydrogen was greater, but with the rapid rise of hydrogen, the impact on the release of surrounding buildings was rapidly reduced.…”

Section: The Research Of Hydrogen Leakagementioning

confidence: 99%

A review on hazards and risks to pipeline operation under transporting hydrogen energy and hydrogen-mixed natural gas

Li,

Song,

Zhang

2024

Sci. Tech. Energ. Transition

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As an efficient and clean fuel, hydrogen energy plays an important role in relieving the energy crisis and achieving the ori-entation of zero carbon emissions. Transportation is the key link in the construction of hydrogen energy infrastructure. For large-scale and long-distance transportation of hydrogen, pipeline transportation has the advantages of high efficiency and cost saving. While using the existing natural gas pipeline to transport hydrogen, it would economize the economic cost, time cost and labor cost. However, the transportation of hydrogen may bring more hazards and risks. Based on the investigation of a large number of literatures, the research advance in hydrogen embrittlement, leakage, combustion and explosion risk of hydrogen and hydrogen-mixed natural gas pipelines was reviewed. The mechanism, research means and evaluation meth-ods of hydrogen embrittlement, as well as the experimental and numerical simulation research results of leakage, combus-tion and explosion were discussed in detail. The definite and important conclusions include: (1) For buried hydrogen-mixed natural gas transportation pipeline, the leakage rate of hydrogen and methane is the same, the formation of the leakage crater is foreign to the nature of leakage gas. (2) When adding less than 25 volume percentage of hydrogen into the natural gas pipelines, the explosion risk would not be increased. Future research should focus on the risk prediction, quantitative risk assessment, intelligent monitoring, and explosion-suppression technical measures of hydrogen and hydrogen-mixed natural gas transportation pipelines, so as to establish comprehensive and multi-level pipeline safety protection barriers.

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“…Pipeline transportation of hydrogen started earlier in developed countries. The most typical case of a hydrogen pipeline 50 is the 208 km long hydrogen pipeline built and put into operation by the Hull Chemical Plant in the Rhine Ruhr industrial area of Germany in 1939, which is in good operation. According to the “White Paper on China’s Hydrogen Energy and Fuel Cell Industry” published in 2019, 51 the US already has 2500 km of hydrogen pipelines, Europe has 1598 km of hydrogen pipelines, China’s hydrogen pipelines are still in their infancy, and it is expected that China will build more than 3000 km of hydrogen pipelines by 2030.…”

Section: Hydrogen Pipeline Transportationmentioning

confidence: 99%

Key Technologies of Pure Hydrogen and Hydrogen-Mixed Natural Gas Pipeline Transportation

et al. 2023

Self Cite

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Thanks to the advantages of cleanliness, high efficiency, extensive sources, and renewable energy, hydrogen energy has gradually become the focus of energy development in the world's major economies. At present, the natural gas transportation pipeline network is relatively complete, while hydrogen transportation technology faces many challenges, such as the lack of technical specifications, high safety risks, and high investment costs, which are the key factors that hinder the development of hydrogen pipeline transportation. This paper provides a comprehensive overview and summary of the current status and development prospects of pure hydrogen and hydrogen-mixed natural gas pipeline transportation. Analysts believe that basic studies and case studies for hydrogen infrastructure transformation and system optimization have received extensive attention, and related technical studies are mainly focused on pipeline transportation processes, pipe evaluation, and safe operation guarantees. There are still technical challenges in hydrogenmixed natural gas pipelines in terms of the doping ratio and hydrogen separation and purification. To promote the industrial application of hydrogen energy, it is necessary to develop more efficient, low-cost, and low-energy-consumption hydrogen storage materials.

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Numerical simulation of leakage and diffusion distribution of natural gas and hydrogen mixtures in a closed container

Cited by 30 publications

References 38 publications

Risk Identification and Safety Technology for Hydrogen Production from Natural Gas Reforming

Risk Identification and Safety Technology for Hydrogen Production from Natural Gas Reforming

A review on hazards and risks to pipeline operation under transporting hydrogen energy and hydrogen-mixed natural gas

Key Technologies of Pure Hydrogen and Hydrogen-Mixed Natural Gas Pipeline Transportation

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