Device and method for flow law research and corrosion simulation test of hydrogen-doped natural gas pipeline

Abstract

The invention relates to a device and method for the flow law research and corrosion simulation test of a hydrogen-doped natural gas pipeline, belongs to the technical field of petroleum and natural gas engineering, and aims to truly restore the single-phase or gas-liquid two-phase flow state of the hydrogen-doped natural gas pipeline, simulate the fluctuation change of a mountain pipeline, effectively research the flow law of the hydrogen-doped natural gas pipeline, master the mechanical property change and the corrosion rule of the pipe in a hydrogen-containing environment, and provides a guidance for safe operation of actual hydrogen-doped natural gas pipelines and design and operation of process facilities.

Description

technical field [0001] The invention relates to a multifunctional hydrogen-doped natural gas pipeline flow law research and corrosion simulation test device and method based on a test loop, belonging to the technical field of petroleum and natural gas engineering. Background technique [0002] At present, my country has put forward the goal of carbon neutrality, and strives to reach the peak of carbon dioxide emissions before 2030, and strives to achieve carbon neutrality before 2060; hydrogen energy has a wide range of sources, high energy conversion rate, clean and pollution-free, storable and renewable It is an important energy carrier to realize sustainable energy supply and cycle. However, the construction of the existing hydrogen pipeline network and storage and transportation facilities is lagging behind, and the market development is constrained; therefore, it is of great significance to use the existing mature natural gas pipeline facilities to mix hydrogen into the ...

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Problems solved by technology

[0003] However, the addition of hydrogen to natural gas pipelines will change the hydraulic and thermal flow properties of the original transport medium, and at the same time, it will cause risks such as hydrogen embrittlement, hydrogen bubbling, decarbonization, and hydrogen corrosion to pipeline materials.

[0004] In order to reasonably study the flow laws of hydrogen-doped natural gas pipelines and grasp the changes in mechanical properties and corrosion laws of pipes in hydrogen-containing environments, it is necessary to restore the flow conditions of hydrogen-doped natural gas pipelines and accurately control temperature, pressure and other working conditions; However, the research on the flow law of hydrogen-doped natural gas pipelines is mainly carried out in the reactor, which cannot truly restore the flow state of the pipeline, and is far from the actual flow conditions; for the testing of the mechanical properties of materials in hydrogen-containing environments, it is usually The material is electrochemically precharged with hydrogen or the material is placed in a hydrogen-containing environment for a period of time before performing a mechanical test in the air; similar test results cannot truly characterize the degradation of the material in the ambient gas and the coupling of the load effect The measured data cannot truly reflect the performance of the material in the real service environment

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