使用氢作为能源载体或能源的相关风险

Q4 Energy
P. Guy, Capelle Julien
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引用次数: 1

摘要

氢气是一种危险气体,它的点火能量低,可燃性范围大,能促进钢的脆化,对聚合物的渗透系数高。氢脆对管材断裂韧性和断裂伸长率的影响较大,而对屈服应力和极限强度的影响较小。用于输送氢气(纯氢气或与天然气混合)的管道缺陷评估需要特定的工具。通过失效评估图或缺口失效评估图获得与裂纹或划痕相关的安全系数。通过极限分析对腐蚀缺陷进行评估,通过计算使用压力下的损伤值来评估估计的修复因子和凹痕。最大允许操作压力(MAOP)的计算中的设计因子根据管道的位置进行修改,以考虑火炬效应或爆炸的致命风险。监测氢气通过国内氢气分配网络渗透造成的泄漏是至关重要的,特别是在封闭区域。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Risks Associated with the Use of Hydrogen as an Energy Carrier or Source
Hydrogen is a dangerous gas due to its low ignition energy, wide flammability range, promotion of the embrittlement of steel, and its high coefficient of permeation for polymers. The fracture toughness and failure elongation of pipe steels are strongly impacted by hydrogen embrittlement, whereas yield stress and ultimate strength are moderately impacted. Specific tools are required for the pipe defect assessment used for the transport of hydrogen, which is pure or blended with natural gas. The safety factors associated with cracks or scratches are obtained through the failure assessment diagram or the notch failure assessment diagram. The corrosion defects are assessed by limit analysis, and the estimated repair factor and dents are evaluated by computing the damage value under service pressure. The design factor in the calculation of the maximum admissible operating pressure (MAOP) is modified depending on the location of the pipes to account for the lethal risks from the torch effect or explosion. It is crucial to monitor the leaks due to hydrogen permeation through domestic hydrogen distribution networks, particularly in closed areas.
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来源期刊
Journal of Nuclear Energy Science and Power Generation Technology
Journal of Nuclear Energy Science and Power Generation Technology Energy-Energy Engineering and Power Technology
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