CN116399680B - Gas transportation method with pipeline hydrogen embrittlement protection function - Google Patents
Gas transportation method with pipeline hydrogen embrittlement protection function Download PDFInfo
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- CN116399680B CN116399680B CN202211488456.8A CN202211488456A CN116399680B CN 116399680 B CN116399680 B CN 116399680B CN 202211488456 A CN202211488456 A CN 202211488456A CN 116399680 B CN116399680 B CN 116399680B
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- 239000001257 hydrogen Substances 0.000 title claims abstract description 166
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 166
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 163
- 239000007789 gas Substances 0.000 title claims abstract description 104
- 238000000034 method Methods 0.000 title claims abstract description 27
- 230000001681 protective effect Effects 0.000 claims abstract description 40
- 230000002045 lasting effect Effects 0.000 claims abstract description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 90
- 239000003345 natural gas Substances 0.000 claims description 45
- 238000001179 sorption measurement Methods 0.000 claims description 14
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 9
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 9
- 238000002474 experimental method Methods 0.000 claims description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 238000011065 in-situ storage Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims 5
- 230000004888 barrier function Effects 0.000 claims 2
- 238000010348 incorporation Methods 0.000 claims 2
- 230000002265 prevention Effects 0.000 claims 2
- 230000002633 protecting effect Effects 0.000 claims 1
- 230000002829 reductive effect Effects 0.000 abstract description 8
- 230000002401 inhibitory effect Effects 0.000 abstract description 5
- 229910000831 Steel Inorganic materials 0.000 description 20
- 239000010959 steel Substances 0.000 description 20
- 238000010574 gas phase reaction Methods 0.000 description 7
- 150000002431 hydrogen Chemical class 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004364 calculation method Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- JISVROCKRBFEIQ-UHFFFAOYSA-N [O].O=[C] Chemical compound [O].O=[C] JISVROCKRBFEIQ-UHFFFAOYSA-N 0.000 description 1
- 230000009172 bursting Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000000670 limiting effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/10—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces generated by pneumatic or hydraulic pressure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0014—Type of force applied
- G01N2203/0016—Tensile or compressive
- G01N2203/0017—Tensile
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/003—Generation of the force
- G01N2203/0042—Pneumatic or hydraulic means
- G01N2203/0044—Pneumatic means
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Pipeline Systems (AREA)
Abstract
The invention belongs to the technical field of pipeline transportation, and provides a gas transportation method with a pipeline hydrogen embrittlement protection function, which comprises the following steps: determining the pressure and the hydrogen loading ratio of the gas to be transported; pre-charging protective gas under preset pressure according to the pressure and the hydrogen loading ratio of the gas to be transported, and stopping pre-charging after lasting the first preset time period; after the pre-completion is finished, the pipeline conveys the gas to be conveyed, and conveying is stopped after the second time is continuously preset; according to the first preset time length and the second preset time length, the pipeline alternately performs pre-charging of protective gas and transportation of gas to be transported; according to the first preset duration of pre-filling the protective gas and the second preset duration of transporting the gas, the pipeline alternately performs pre-filling of the protective gas and transporting the gas to be transported, so that the purpose of inhibiting the hydrogen embrittlement of the pipeline is achieved, the probability of failure of the pipeline due to the hydrogen embrittlement is reduced, the problem of directly adding the additional protective gas into the gas is avoided, and the purity of the transporting gas is ensured.
Description
Technical Field
The invention belongs to the technical field of pipeline transportation, and particularly relates to a gas transportation method with a pipeline hydrogen embrittlement protection function.
Background
Hydrogen energy is a clean low-carbon energy source and is an important means for global energy technical revolution and industrial revolution at present. Currently, to reduce the transportation costs of hydrogen, hydrogen is typically delivered through existing natural gas pipelines in the form of pure hydrogen or hydrogen-loaded natural gas. Hydrogen embrittlement of metal tubing is an important factor limiting the development of hydrogen pipelines: in a hydrogen environment, hydrogen molecules are adsorbed on the surface of the metal pipe and permeate into the pipe in an atomic form, so that the mechanical property of the metal pipe is reduced, and the operation safety of the pipe is threatened. Therefore, the hydrogen embrittlement protection of the pure hydrogen or the hydrogen-doped natural gas pipeline is of great significance for the safe operation of the pure hydrogen or the hydrogen-doped natural gas pipeline.
In the prior study, a method for preventing pipeline hydrogen embrittlement by adding carbon monoxide gas into a hydrogen conveying pipeline or a hydrogen mixing conveying pipeline is disclosed, and the method can effectively inhibit pipeline steel from hydrogen induced failure under the conditions of not reducing total pressure and high hydrogen partial pressure, so as to avoid catastrophic accidents caused by hydrogen induced brittle bursting. The method comprises the steps of mixing oxygen into hydrogen according to a volume ratio of 0.05% -0.5% to obtain oxygen-doped hydrogen, mixing the oxygen-doped hydrogen into natural gas to obtain the hydrogen-doped natural gas, and inhibiting the hydrogen embrittlement phenomenon of the natural gas pipeline by oxygen doping by utilizing a mechanism that a specific amount of oxygen has an inhibiting effect on the hydrogen embrittlement of the hydrogen in the pipe.
The inventors found that: the existing hydrogen embrittlement protection technology of the pure hydrogen or the hydrogen-doped natural gas pipeline needs to blend a certain amount of additional gas into the pipeline, which can lead to the reduction of the purity of the conveyed pure hydrogen or the hydrogen-doped natural gas and is unfavorable for the subsequent sale and processing of the pure hydrogen/the hydrogen-doped natural gas.
Disclosure of Invention
In order to solve the problems, the invention provides a gas transportation method with a pipeline hydrogen embrittlement protection function.
In order to achieve the above object, the present invention is realized by the following technical scheme:
the invention provides a gas transportation method with a pipeline hydrogen embrittlement protection function, which comprises the following steps:
determining the pressure and the hydrogen loading ratio of the gas to be transported;
pre-charging protective gas under preset pressure according to the pressure and the hydrogen loading ratio of the gas to be transported, and stopping pre-charging after lasting the first preset time period;
after the pre-completion is finished, the pipeline conveys the gas to be conveyed, and conveying is stopped after the second time is continuously preset;
and according to the first preset time length and the second preset time length, the pipeline alternately performs pre-charging of protective gas and transportation of the gas to be transported.
Further, when the gas to be transported is pure hydrogen, the pressure of the pure hydrogen is determined.
Further, when the gas to be transported is hydrogen-loaded natural gas, the pressure and the hydrogen loading ratio of the hydrogen-loaded natural gas are determined.
Further, in the gas transportation process, the time when the pipeline adsorption hydrogen concentration increases to the critical adsorption hydrogen concentration is taken as a second preset time period.
Further, the gas of the critical pressure and the critical hydrogen loading ratio is charged into the pipe, and the surface adsorption hydrogen concentration of the pipe at this time is calculated as the critical adsorption hydrogen concentration.
Further, in the gas environment with different pressures and different hydrogen loading ratios, the area shrinkage of the pipeline is measured, the hydrogen embrittlement index is calculated, and the critical pressure and the critical hydrogen loading ratio for enabling the hydrogen embrittlement index of the pipeline sample to be a preset value are determined.
Further, manufacturing a pipeline sample, and filling pure hydrogen with different pressures or hydrogen-doped natural gas with different hydrogen-doped ratios at different pressures into an autoclave of a high-pressure in-situ stretcher;
in pure hydrogen with different pressures or hydrogen-doped natural gas environments with different hydrogen-doped ratios with different pressures, a stretching experiment is carried out on a pipeline sample, the area shrinkage of the pipeline sample is measured, the hydrogen embrittlement index is calculated, and the critical pure hydrogen pressure or critical hydrogen-doped natural gas pressure and the hydrogen-doped ratio which enable the hydrogen embrittlement index of the pipeline sample to be 35% are determined.
Further, a protective gas with preset pressure is filled in a hydrogen permeation electrolytic cell with a high-pressure gas phase reaction kettle, and a pipeline sample is kept stand in the protective gas for a preset time period.
Further, the protective gas is carbon monoxide.
Further, the protective gas is carbon monoxide oxygen.
Compared with the prior art, the invention has the beneficial effects that:
1. the invention is based on the pressure of the gas to be transported and the hydrogen loading ratio, and on the basis of determining to pre-charge the protective gas under the preset pressure; according to the first preset duration of pre-filling the protective gas and the second preset duration of transporting the gas, the pipeline alternately performs pre-filling of the protective gas and transporting the gas to be transported, so that the purpose of inhibiting the hydrogen embrittlement of the pipeline is achieved, the probability of failure of the pipeline due to the hydrogen embrittlement is reduced, the problem of directly adding the additional protective gas into the gas is avoided, and the purity of the transporting gas is ensured;
2. according to the invention, by utilizing the characteristic that the adsorption capacity of hydrogen molecules on the surface of the pipeline steel pre-adsorbed with protective gas is reduced, the hydrogen embrittlement of the pure hydrogen or hydrogen-doped natural gas pipeline is inhibited by alternately conveying the hydrogen embrittlement protective gas and the pure hydrogen or hydrogen-doped natural gas into the pipeline, so that the probability of failure of the pure hydrogen or hydrogen-doped natural gas pipeline due to the hydrogen embrittlement is reduced;
3. according to the invention, the hydrogen embrittlement protective gas and the pure hydrogen or the hydrogen-doped natural gas are alternately conveyed in the pipeline, so that the doping of the impurity gas into the pure hydrogen or the hydrogen-doped natural gas is avoided, and the purity of the pure hydrogen or the hydrogen-doped natural gas is ensured;
4. the protective gas alternately conveyed in the invention can be recycled, so that the industrial cost of the method is reduced;
5. according to the invention, by calculating the effective hydrogen embrittlement protection time, the alternate delivery time of pure hydrogen or hydrogen-doped natural gas and protective gas can be reasonably arranged, the occurrence of hydrogen embrittlement can be reduced to the greatest extent, and the protective effect of the protective gas can be maximized.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments and are incorporated in and constitute a part of this specification, illustrate and explain the embodiments and together with the description serve to explain the embodiments.
Fig. 1 is a flowchart of embodiment 1 of the present invention.
Detailed Description
The invention will be further described with reference to the drawings and examples.
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
Example 1:
as described in the background art, in the process of transporting gas through pipelines, the adopted hydrogen embrittlement protection mode of pure hydrogen or hydrogen-doped natural gas pipelines requires to blend a certain amount of additional protective gas into the pipelines, so that the purity of the transported gas is reduced, and the gas is not beneficial to sales and processing of the transported gas; in view of the above problems, the present embodiment provides a gas transportation method with a pipeline hydrogen embrittlement protection function, including:
determining the pressure and the hydrogen loading ratio of the gas to be transported; pre-charging protective gas under preset pressure according to the pressure and the hydrogen loading ratio of the gas to be transported, and stopping pre-charging after lasting the first preset time period; after the pre-completion is finished, the pipeline conveys the gas to be conveyed, and conveying is stopped after the second time is continuously preset; and according to the first preset time length and the second preset time length, the pipeline alternately performs pre-charging of protective gas and transportation of the gas to be transported. According to the method, the device and the system, the pipeline alternately performs the pre-charging of the protective gas and the transportation of the gas to be transported according to the first pre-set time length of pre-charging the protective gas and the second pre-set time length of transporting the gas, so that the purpose of inhibiting the hydrogen embrittlement of the pipeline is achieved, the problem that the additional protective gas is directly added into the gas is avoided, and the purity of the transporting gas is ensured. The main steps of the gas transportation method with the pipeline hydrogen embrittlement protection function in the embodiment are as follows:
s1, filling pure hydrogen with different pressures or hydrogen-doped natural gas with different hydrogen-doped ratios at different pressures into an autoclave of a high-pressure in-situ stretcher;
s2, carrying out a stretching experiment on the pipeline sample in pure hydrogen with different pressures or hydrogen-doped natural gas environments with different hydrogen-doped ratios with different pressures, measuring the area shrinkage of the sample, calculating the hydrogen embrittlement index, and determining the pure hydrogen pressure or the hydrogen-doped natural gas pressure and the hydrogen-doped ratio which enable the hydrogen embrittlement index of the pipeline sample to be 35%; the pipeline sample is a pipeline steel pipe sample, and X52 steel can be adopted; the calculation of the hydrogen embrittlement index can be carried out in a conventional manner and is not described in detail here;
s3, filling pure hydrogen or hydrogen-doped natural gas with a hydrogen embrittlement index of 35% of a pipeline sample into a hydrogen permeation electrolytic cell with a high-pressure gas phase reaction kettle; calculating the critical adsorption hydrogen concentration of the pipeline sample at the moment;
s4, filling 2MPa of carbon monoxide into a hydrogen permeation electrolytic cell with a high-pressure gas phase reaction kettle, and standing a pipeline sample in the 2MPa of carbon monoxide for one day;
s5, evacuating 2MPa of carbon monoxide, and filling 4MPa of pure hydrogen into a hydrogen permeation electrolytic cell with a high-pressure gas phase reaction kettle. Measuring the change of the adsorbed hydrogen concentration of the pipeline sample in the 4MPa pure hydrogen environment along with time, and when the adsorbed hydrogen concentration of the pipeline sample in the 4MPa pure hydrogen environment is increased to the critical adsorbed hydrogen concentration, namely the effective protection time under the condition;
s6, conveying 2MPa of carbon monoxide into an X52 steel pure hydrogen or hydrogen-doped natural gas pipeline for one day;
s7, conveying 4MPa pure hydrogen into an X52 steel pure hydrogen or hydrogen-doped natural gas pipeline, wherein the conveying time is equal to the effective protection time obtained through experiments;
s8, 2MPa of carbon monoxide is conveyed into the X52 steel pure hydrogen/hydrogen-doped natural gas pipeline again, the conveying time is one day, after conveying is completed, 4MPa of pure hydrogen is conveyed, and the conveying time is equal to the effective protection time obtained through experiments; the subsequent process repeats steps S6 and S7.
In some embodiments, an experimental method for measuring critical adsorbed hydrogen concentration calculations of pipeline steel in a pure hydrogen or hydrogen-loaded natural gas environment without hydrogen embrittlement based on gas phase hydrogen permeation parameters is provided, comprising:
filling pure hydrogen with different pressures or hydrogen-doped natural gas with different hydrogen-doped ratios with different pressures into an autoclave of a high-pressure in-situ stretcher;
carrying out a stretching experiment on a sample of a certain pipeline steel L in pure hydrogen with different pressures or hydrogen-doped natural gas environments with different hydrogen-doped ratios with different pressures, measuring the area shrinkage of the sample, calculating the hydrogen embrittlement index, and determining the critical pure hydrogen pressure or critical hydrogen-doped natural gas pressure and hydrogen-doped ratio which enable the hydrogen embrittlement index of the pipeline steel L to be just 35%;
and (3) filling the critical pure hydrogen pressure or critical hydrogen-doped natural gas pressure and hydrogen-doped ratio of the pipeline steel L into a hydrogen permeation electrolytic cell with a high-pressure gas phase reaction kettle. And calculating the surface adsorption hydrogen concentration of the sample of the pipeline steel L at the moment, wherein the adsorption hydrogen concentration is the critical adsorption hydrogen concentration S of the pipeline steel L in a pure hydrogen/hydrogen-doped natural gas environment without hydrogen embrittlement.
In some embodiments, an experimental method for measuring effective hydrogen embrittlement protection time of pre-charged protective gas to pipeline steel in a pure hydrogen/hydrogen-loaded natural gas environment is provided, comprising:
filling a protective gas G with a certain pressure P, such as carbon monoxide, oxygen and the like, into a hydrogen permeation electrolytic cell with a high-pressure gas phase reaction kettle, and enabling a pipeline steel L sample to stand in the protective gas G with the pressure P for a pre-filling time T; the precharge time T may be a preset first duration;
the protective gas G with the pressure P is emptied, pure hydrogen with a certain pressure or hydrogen-doped natural gas with a certain hydrogen-doped ratio with a certain pressure is filled into a hydrogen permeation electrolytic cell with a high-pressure gas phase reaction kettle, and the environment is marked as W. And measuring the change of the adsorption hydrogen concentration of the pipeline steel L sample in the environment W along with time, wherein the time for increasing the adsorption hydrogen concentration of the pipeline steel L sample in the environment W to the critical adsorption hydrogen concentration S is the effective hydrogen embrittlement protection time V of the pipeline steel L sample in the environment W, which is the protective gas G with the pressure P of the pre-charging time T, and the effective hydrogen embrittlement protection time V can be a preset second duration.
In some embodiments, a method for calculating effective protection time of a protection gas on a pure hydrogen/hydrogen-doped natural gas pipeline based on the experimental method is provided, which comprises the following steps:
in a pure hydrogen/hydrogen-doped natural gas pipeline made of pipeline steel L, after protective gas G with the pressure P in the T time is pre-filled, the safe operation time of the pipeline steel L in the working environment W without hydrogen embrittlement is V.
The above description is only a preferred embodiment of the present embodiment, and is not intended to limit the present embodiment, and various modifications and variations can be made to the present embodiment by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present embodiment should be included in the protection scope of the present embodiment.
Claims (9)
1. A gas transportation method with a pipeline hydrogen embrittlement protection function, which is characterized by comprising the following steps:
determining the pressure and the hydrogen loading ratio of the gas to be transported;
pre-charging protective gas under preset pressure according to the pressure and the hydrogen loading ratio of the gas to be transported, and stopping pre-charging after lasting the first preset time period;
after the pre-filling is stopped, the pipeline conveys the gas to be conveyed, and after the second preset time period, the conveying is stopped; in the gas transportation process, the time when the concentration of the adsorbed hydrogen in the pipeline is increased to the critical concentration of the adsorbed hydrogen is taken as a second preset time length;
and according to the first preset time length and the second preset time length, the pipeline alternately performs pre-charging of protective gas and transportation of the gas to be transported.
2. A method of transporting a gas having a hydrogen embrittlement prevention effect on a pipeline according to claim 1, wherein the pressure of the pure hydrogen is determined when the gas to be transported is pure hydrogen.
3. A method of transporting gas with pipe hydrogen embrittlement protection as claimed in claim 1, wherein the pressure and the loading ratio of the loaded natural gas are determined when the gas to be transported is the loaded natural gas.
4. A gas transportation method with the hydrogen embrittlement prevention effect of a pipe according to claim 1, wherein a gas of a critical pressure and a critical hydrogen addition ratio is charged into the pipe, and the surface adsorption hydrogen concentration of the pipe at this time is calculated as the critical adsorption hydrogen concentration.
5. The method for transporting gas having a hydrogen embrittlement protecting effect for a pipeline according to claim 4, wherein the shrinkage of the pipeline is measured under different pressure and different hydrogen incorporation ratios, the hydrogen embrittlement index is calculated, and the critical pressure and the critical hydrogen incorporation ratio for making the hydrogen embrittlement index of the pipeline sample be a preset value are determined.
6. The method for transporting gas with the pipeline hydrogen embrittlement protection effect according to claim 5, wherein pipeline samples are manufactured, and pure hydrogen with different pressures or hydrogen-doped natural gas with different hydrogen-doped ratios with different pressures are filled in an autoclave of a high-pressure in-situ stretcher;
in pure hydrogen with different pressures or hydrogen-doped natural gas environments with different hydrogen-doped ratios with different pressures, a stretching experiment is carried out on a pipeline sample, the area shrinkage of the pipeline sample is measured, the hydrogen embrittlement index is calculated, and the critical pure hydrogen pressure or critical hydrogen-doped natural gas pressure and the hydrogen-doped ratio which enable the hydrogen embrittlement index of the pipeline sample to be 35% are determined.
7. The method for transporting gas with hydrogen embrittlement protection according to claim 6, wherein a protective gas of a predetermined pressure is filled in the hydrogen permeable electrolytic cell with the high-pressure gas reaction vessel, and the pipe sample is left to stand in the protective gas for a predetermined period of time for a first predetermined period of time.
8. A method of transporting a gas having a hydrogen embrittlement barrier effect in a pipeline as claimed in claim 1, wherein the protective gas is carbon monoxide.
9. A method of transporting a gas having a hydrogen embrittlement barrier effect in a pipeline as claimed in claim 1, wherein the protective gas is oxygen.
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| CN202211488456.8A CN116399680B (en) | 2022-11-25 | 2022-11-25 | Gas transportation method with pipeline hydrogen embrittlement protection function |
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| CN202211488456.8A CN116399680B (en) | 2022-11-25 | 2022-11-25 | Gas transportation method with pipeline hydrogen embrittlement protection function |
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| US10634593B2 (en) * | 2017-02-17 | 2020-04-28 | Goff Omega Holdings, Llc | Testing method for hydrogen embrittlement |
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