Hydrogen pipeline project definition and process design requirements, pressure pipeline design and installation qualification certificate
2025-05-30
Hydrogen pipeline engineering: Engineering for transporting hydrogen through pipelines. Generally includes hydrogen pipelines, hydrogen stations, pipeline crossings (and overpasses), and auxiliary production facilities.
Hydrogen station: A general term for various process stations in hydrogen pipeline projects. Generally includes hydrogen stations and hydrogen-added natural gas pipeline hydrogen stations.
The design and construction units of hydrogen pipeline projects should apply for and obtain the corresponding level of pressure pipeline design and installation qualification certificates.
1. Process design should optimize the pipeline design based on gas source conditions, transmission distance, transmission volume, user characteristics and requirements, and the relationship with existing pipelines and underground gas storage capacity and distribution, and determine it after comprehensive analysis and technical and economic comparison.
2. The hydrogen pressure range is determined according to the hydrogen resistance of the pipe material, and the results of hydrogen erosion tests of various materials and equipment should be provided.
3. The process design should determine the following content
a) Overall hydrogen transmission process
b) Process parameters and flow of hydrogen stations;
c) Number and spacing of hydrogen stations;
d) Diameter of hydrogen pipeline, design pressure, and compressor station pressure ratio.
4. In the process design, the gas source pressure should be used reasonably. When using pressure boosting transmission, multiple schemes should be technically and economically compared, combining factors such as transmission volume, pipe diameter, transmission pressure, power supply, and operation management, and the compressor station pressure ratio and station spacing should be reasonably selected according to economic and energy-saving principles.
5. Gas quality monitoring facilities should be installed at the gas source station and terminal station of the hydrogen pipeline, and it is advisable to install gas quality monitoring facilities at intermediate (distribution) stations.
6. The strength design of the hydrogen pipeline should meet the requirements of changes in operating conditions.
7. It is advisable to set up a bypass at the hydrogen station.
8. The hydrogen pipeline process design should at least include the following information:
1) Composition of pipeline gas
2) Quantity, location, supply volume, and variable range of gas sources
3) Pressure, temperature, and range of variation of gas sources
4) Natural environmental conditions along the line and ground temperature range at the pipeline burial location;
5) Data on pressure demand and gas consumption of users along the line.
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