含氢气体经主要输气管道输送过程中,物料的氢降解和压缩站设备运行方式的变化是风险和成本增加的因素

IF 8.3 2区 工程技术 Q1 CHEMISTRY, PHYSICAL
A.G. Ishkov , O.V. Zhdaneyev , K.V. Romanov , E.A. Koloshkin , S.Y. Nastich , V.A. Egorov , A.B. Arabey , A.Y. Mikhalev , V.A. Lopatkin
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引用次数: 0

摘要

考虑了现有气体输送系统中压缩站主要工艺设备运行方式的改变,以及压缩站设备材料在输送甲烷-氢混合物或氢气压力增大时力学性能的退化问题。考虑了离心压缩机在含氢混合物管道输送中的运行特点。由于氢的物理和化学性质的特殊性,导致流速的增加,因此需要提高压缩机的转子转速,这受到法规要求的限制。当使用含氢混合物时,转子材料脆化的风险增加。介绍了压气站设备的特点材料——不同等级的结构钢的抗氢脆试验结果。建立了氢浓度为5% ~ 100%,压力为10mpa时钢的强度、延性和抗裂性能变化的主要规律。高强钢在含氢环境下存在去强化和强脆现象。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Hydrogen degradation of materials and changes in the operation mode of compressor station equipment as factors of increased risks and costs during transportation of hydrogen-containing gas through main gas pipelines

Hydrogen degradation of materials and changes in the operation mode of compressor station equipment as factors of increased risks and costs during transportation of hydrogen-containing gas through main gas pipelines
The problems of changing operating modes of the main technological equipment of compressor stations (CS) of the existing gas transportation system, as well as degradation of mechanical properties of the CS equipment material in case of transportation of methane-hydrogen mixtures or hydrogen at increased pressure are considered. The peculiarities of centrifugal compressor operation at pipeline transportation of hydrogen-containing mixtures are considered. Due to the peculiarities of physical and chemical properties of hydrogen, leading to an increase in flow velocity, an increase in the rotor speed of the compressor is required, which is limited by regulatory requirements. When operating with hydrogen-containing mixtures, the risk of embrittlement of the rotor material increases. The results of tests for estimation of resistance to hydrogen embrittlement of structural steels of different classes, which are characteristic materials of compressor station equipment, are presented. The main regularities of change of strength, ductility and crack resistance of steels at hydrogen concentration from 5 % to 100 % and pressure 10 MPa are established. In hydrogen-containing environment there is de-strengthening and strong embrittlement of high-strength steels.
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来源期刊
International Journal of Hydrogen Energy
International Journal of Hydrogen Energy 工程技术-环境科学
CiteScore
13.50
自引率
25.00%
发文量
3502
审稿时长
60 days
期刊介绍: The objective of the International Journal of Hydrogen Energy is to facilitate the exchange of new ideas, technological advancements, and research findings in the field of Hydrogen Energy among scientists and engineers worldwide. This journal showcases original research, both analytical and experimental, covering various aspects of Hydrogen Energy. These include production, storage, transmission, utilization, enabling technologies, environmental impact, economic considerations, and global perspectives on hydrogen and its carriers such as NH3, CH4, alcohols, etc. The utilization aspect encompasses various methods such as thermochemical (combustion), photochemical, electrochemical (fuel cells), and nuclear conversion of hydrogen, hydrogen isotopes, and hydrogen carriers into thermal, mechanical, and electrical energies. The applications of these energies can be found in transportation (including aerospace), industrial, commercial, and residential sectors.
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