CN113566113A - Equipment and method for extracting and transporting hydrogen in hydrogen-doped natural gas - Google Patents
Equipment and method for extracting and transporting hydrogen in hydrogen-doped natural gas Download PDFInfo
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- CN113566113A CN113566113A CN202110698308.8A CN202110698308A CN113566113A CN 113566113 A CN113566113 A CN 113566113A CN 202110698308 A CN202110698308 A CN 202110698308A CN 113566113 A CN113566113 A CN 113566113A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C11/00—Use of gas-solvents or gas-sorbents in vessels
- F17C11/005—Use of gas-solvents or gas-sorbents in vessels for hydrogen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/02—Special adaptations of indicating, measuring, or monitoring equipment
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C13/00—Details of vessels or of the filling or discharging of vessels
- F17C13/04—Arrangement or mounting of valves
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D1/00—Pipe-line systems
- F17D1/02—Pipe-line systems for gases or vapours
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/01—Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of a product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17D—PIPE-LINE SYSTEMS; PIPE-LINES
- F17D3/00—Arrangements for supervising or controlling working operations
- F17D3/18—Arrangements for supervising or controlling working operations for measuring the quantity of conveyed product
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2221/00—Handled fluid, in particular type of fluid
- F17C2221/01—Pure fluids
- F17C2221/012—Hydrogen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2223/00—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel
- F17C2223/01—Handled fluid before transfer, i.e. state of fluid when stored in the vessel or before transfer from the vessel characterised by the phase
- F17C2223/0107—Single phase
- F17C2223/0138—Single phase solid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F17—STORING OR DISTRIBUTING GASES OR LIQUIDS
- F17C—VESSELS FOR CONTAINING OR STORING COMPRESSED, LIQUEFIED OR SOLIDIFIED GASES; FIXED-CAPACITY GAS-HOLDERS; FILLING VESSELS WITH, OR DISCHARGING FROM VESSELS, COMPRESSED, LIQUEFIED, OR SOLIDIFIED GASES
- F17C2260/00—Purposes of gas storage and gas handling
- F17C2260/02—Improving properties related to fluid or fluid transfer
- F17C2260/026—Improving properties related to fluid or fluid transfer by calculation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/32—Hydrogen storage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/34—Hydrogen distribution
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/45—Hydrogen technologies in production processes
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- Engineering & Computer Science (AREA)
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- General Engineering & Computer Science (AREA)
- Hydrogen, Water And Hydrids (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
Abstract
The invention discloses equipment and a method for extracting hydrogen in transported hydrogen-doped natural gas. The equipment comprises at least one magnesium-based solid hydrogen storage and transportation device, the magnesium-based solid hydrogen storage and transportation device comprises a hydrogen storage chamber, the hydrogen storage chamber comprises a storage cavity for placing magnesium-based solid hydrogen storage materials and a heat exchange cavity for circulating heat exchange media, the storage cavity is communicated with a natural gas pipeline through an air inlet pipe and an air outlet pipe, a first hydrogen concentration detector, a first flowmeter and a first valve are arranged on the air inlet pipe, a second hydrogen concentration detector, a second flowmeter and a second valve are further arranged on the air outlet pipe, and an inlet and an outlet which are communicated with the outside are formed in the heat exchange cavity. After the natural gas pipeline transports the hydrogen-doped natural gas for a long distance, a magnesium-based solid hydrogen storage and transportation device is adopted near a hydrogen utilization unit such as a hydrogenation station to absorb and store hydrogen in the natural gas pipeline and transport the hydrogen to the hydrogen utilization unit, so that the problem of hydrogen transportation between the natural gas pipeline and the hydrogen utilization unit at a distance of hundreds of kilometers is solved.
Description
Technical Field
The invention relates to the technical field of hydrogen energy storage and transportation, in particular to equipment and a method for extracting and transporting hydrogen in hydrogen-doped natural gas.
Background
The transportation cost of hydrogen can be effectively reduced by transporting the natural gas doped with hydrogen through the existing natural gas pipeline, but how to efficiently separate the hydrogen in the natural gas doped with hydrogen and solve the problem of hydrogen transportation of hydrogen units such as a natural gas pipeline transporting to a hydrogen filling station over the last hundred kilometers is a technical problem which needs to be solved urgently.
Disclosure of Invention
The invention aims to provide equipment for efficiently extracting and transporting hydrogen in hydrogen-doped natural gas, aiming at the defects in the prior art.
The invention relates to equipment for extracting hydrogen from transported hydrogen-doped natural gas, which comprises at least one magnesium-based solid hydrogen storage and transportation device, wherein the magnesium-based solid hydrogen storage and transportation device comprises a hydrogen storage chamber, the hydrogen storage chamber comprises a storage cavity for containing magnesium-based solid hydrogen storage substances and a heat exchange cavity for circulating a heat exchange medium, the storage cavity is communicated with a natural gas pipeline through an air inlet pipe and an air outlet pipe, the air inlet pipe is provided with a first hydrogen concentration detector, a first flowmeter and a first valve, the air outlet pipe is further provided with a second hydrogen concentration detector, a second flowmeter and a second valve, and the heat exchange cavity is provided with an inlet and an outlet which are communicated with the outside.
Furthermore, the equipment comprises a plurality of magnesium-based solid hydrogen storage and transportation devices, a gas flow dividing device is arranged between the natural gas pipeline and the plurality of gas inlet pipes, and a gas flow converging device is arranged between the natural gas pipeline and the plurality of gas outlet pipes.
Further, the equipment also comprises a heat conduction oil device, wherein the heat conduction oil device comprises an oil tank and a temperature control mechanism used for adjusting the temperature of oil in the oil tank, the oil tank is communicated with an inlet and an outlet of the heat exchange cavity through an oil inlet pipe and an oil outlet pipe respectively to form a circulation loop, a third valve and a circulation pump are arranged on the oil inlet pipe, and a fourth valve is arranged on the oil outlet pipe.
Furthermore, the temperature control mechanism comprises a heating assembly for heating the heat conduction oil, a refrigerating assembly for cooling the heat conduction oil and a temperature sensor for detecting the temperature of the heat conduction oil.
Furthermore, the equipment also comprises a purging device which is detachably communicated with the heat exchange cavity through a blowing pipe.
Furthermore, the equipment also comprises an air pump which is detachably communicated with the storage cavity through an air pumping pipe.
Further, the magnesium-based solid-state hydrogen storage material comprises one or more of pure magnesium, magnesium alloy and magnesium-based composite material.
The method for extracting the hydrogen in the transported hydrogen-doped natural gas uses the equipment and comprises the following specific steps:
s1: introducing a heat exchange medium with the temperature of 80-150 ℃ into the heat exchange cavity;
s2: opening the first valve and the second valve, adjusting the opening of the first valve to adjust the flow rate of the hydrogen-doped natural gas, and observing the hydrogen concentration c detected by the second hydrogen concentration detectoroutWhen c isoutWhen the concentration is 0.01-1%, stopping adjusting the first valve, and introducing hydrogen-doped natural gas to the magnesium-based solid hydrogen storage and transportation device at the flow rate;
s3: hydrogen charging quantity m of magnesium-based solid hydrogen storage and transportation deviceH2Calculated by the following formula:
here, vinData for real-time detection of a first flow meter, and voutFor real-time detection of data of the second flowmeter, cinAnd coutThe concentrations of hydrogen gas detected by the first hydrogen concentration detector and the second hydrogen concentration detector, t1And t2The time of starting and ending hydrogen storage of the magnesium-based solid hydrogen storage and transportation device is respectively; when m isH2When the hydrogen filling quantity is equal to the rated hydrogen filling quantity of the magnesium-based solid hydrogen storage and transportation device, the first valve and the second valve are closed;
s4: stopping introducing the heat exchange medium, discharging the heat exchange medium in the heat exchange cavity, and vacuumizing the storage cavity after the magnesium-based solid hydrogen storage material of the magnesium-based solid hydrogen storage and transportation device is cooled to remove the natural gas in the storage cavity.
The invention selectively absorbs hydrogen in the hydrogen-doped natural gas by utilizing the chemical reaction of the magnesium-based solid hydrogen storage material and the hydrogen, realizes the high-efficiency extraction of the hydrogen in the hydrogen-doped natural gas, adopts a magnesium-based solid hydrogen storage and transportation device to absorb and store the hydrogen in the natural gas pipeline near a hydrogen utilization unit of a hydrogenation station and the like after the natural gas pipeline transports the hydrogen-doped natural gas for a long distance, and transports the hydrogen to the hydrogen utilization unit, thereby solving the problem of hydrogen transportation at a distance of hundreds of kilometers between the natural gas pipeline and the hydrogen utilization unit. The overall hydrogen transportation cost of the mode can be obviously reduced, and the large-scale application of hydrogen energy can be promoted.
Drawings
FIG. 1 is a schematic three-dimensional structure of an apparatus for extracting hydrogen from natural gas for transportation according to the present invention;
FIG. 2 is a schematic view of the structure of the heat transfer oil device of the present invention;
FIG. 3 is a schematic structural view of a purge apparatus of the present invention;
fig. 4 is a schematic structural view of a hydrogen storage chamber of the present invention.
1. A magnesium-based solid hydrogen storage and transportation device; 11. a hydrogen storage chamber; 111. a storage chamber; 112. a heat exchange cavity; 2. an air inlet pipe; 21. a first hydrogen concentration detector; 22. a first flow meter; 23. a first valve; 3. an air outlet pipe; 31. a second hydrogen concentration detector; 32. a second flow meter; 33. a second valve; 4. a natural gas pipeline; 5. a gas diversion device; 6. a gas confluence device; 7. a heat transfer oil device; 71. an oil tank; 72. a temperature control mechanism; 721. a heating assembly; 722. a refrigeration assembly; 723. a temperature sensor; 73. an oil inlet pipe; 731. a third valve; 732. a circulation pump; 74. an oil outlet pipe; 741. a fourth valve; 8. a purging device; 81. an air blowing pipe; 9. an air pump; 91. and an air exhaust pipe.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1-4, the apparatus for extracting hydrogen from natural gas blended with hydrogen according to the present invention comprises at least one magnesium-based solid hydrogen storage and transportation device 1, wherein the magnesium-based solid hydrogen storage and transportation device 1 comprises a hydrogen storage chamber 11, the hydrogen storage chamber 11 comprises a storage cavity 111 for storing magnesium-based solid hydrogen and a heat exchange cavity 112 for circulating a heat exchange medium, the storage cavity 111 is communicated with a natural gas pipeline 4 through an air inlet pipe 2 and an air outlet pipe 3, the air inlet pipe 2 is provided with a first hydrogen concentration detector 21, a first flowmeter 22 and a first valve 23, the air outlet pipe 3 is further provided with a second hydrogen concentration detector 31, a second flowmeter 32 and a second valve 33, and the heat exchange cavity 112 is provided with an inlet and an outlet communicated with the outside.
The invention selectively absorbs the hydrogen in the hydrogen-doped natural gas by utilizing the chemical reaction of the magnesium-based solid hydrogen storage material and the hydrogen, thereby realizing the high-efficiency extraction of the hydrogen in the hydrogen-doped natural gas. After the natural gas pipeline 4 transports the hydrogen-doped natural gas for a long distance, the magnesium-based solid hydrogen storage and transportation device 1 is adopted near a hydrogen unit of a hydrogenation station and the like to absorb and store hydrogen in the natural gas pipeline 4 and transport the hydrogen to the hydrogen unit, so that the problem of hydrogen transportation between the natural gas pipeline 4 and the hydrogen unit for hundreds of kilometers is solved. The overall hydrogen transportation cost of the mode can be obviously reduced, and the large-scale application of hydrogen energy can be promoted.
The equipment can comprise a plurality of magnesium-based solid hydrogen storage and transportation devices 1, a gas flow dividing device 5 is arranged between a natural gas pipeline 4 and a plurality of gas inlet pipes 2, and a gas confluence device 6 is arranged between the natural gas pipeline 4 and a plurality of gas outlet pipes 3, so that the extraction rate of hydrogen is improved.
The equipment also comprises a heat conduction oil device 7, wherein the heat conduction oil device 7 comprises an oil tank 71 and a temperature control mechanism 72 for adjusting the temperature of oil in the oil tank 71, the oil tank 71 is communicated with the inlet and the outlet of the heat exchange cavity 112 through an oil inlet pipe 73 and an oil outlet pipe 74 respectively to form a circulation loop, a third valve 731 and a circulation pump 732 are arranged on the oil inlet pipe 73, a fourth valve 741 is arranged on the oil outlet pipe 74, the temperature of the heat conduction oil flowing into the magnesium-based solid hydrogen storage and transportation device 1 is 80-150 ℃ by taking the oil as a heat conduction medium, and the temperature of the heat conduction oil flowing out of the magnesium-based solid hydrogen storage and transportation device 1 is 150-220 ℃.
The temperature control mechanism 72 may further include a heating component 721 for heating the heat conducting oil, a refrigerating component 722 for cooling the heat conducting oil, and a temperature sensor 723 for detecting the temperature of the heat conducting oil, wherein the heat conducting oil is heated and cooled by the heating component 721 and the refrigerating component 722, and when the temperature sensor 723 detects that the temperature reaches a preset value, the heating component 721 and the refrigerating component 722 stop heating or cooling.
The equipment can also comprise a purging device 8, the purging device 8 is detachably communicated with the heat exchange cavity 112 through a gas blowing pipe 81, after the magnesium-based solid hydrogen storage and transportation device 1 stores hydrogen, oil in the heat exchange cavity 112 is purged out through the purging device 8, and the oil enters the oil tank 71 again. Purge arrangement 8 may include a booster pump through which a source of purge gas is passed into heat exchange chamber 112.
The equipment can also comprise an air pump 9, the air pump 9 is detachably communicated with the storage cavity 111 through an air pumping pipe 91, and after the magnesium-based solid hydrogen storage and transportation device 1 stores hydrogen and is cooled, all natural gas in the storage cavity 111 is pumped out by the air pump 9, so that the purity of the hydrogen in the storage cavity 111 is ensured.
The method for extracting the hydrogen in the transported hydrogen-doped natural gas uses the equipment and comprises the following specific steps:
s1: introducing a heat exchange medium with the temperature of 80-150 ℃ into the heat exchange cavity 112;
s2: the first valve 23 and the second valve 33 are opened, the flow rate of the hydrogen-doped natural gas is adjusted by adjusting the opening degree of the first valve 23, and the hydrogen concentration c detected by the second hydrogen concentration detector 31 is observedoutWhen c isoutWhen the concentration is 0.01-1%, stopping adjusting the first valve 23, and introducing hydrogen-doped natural gas into the magnesium-based solid hydrogen storage and transportation device 1 at the flow rate;
s3: magnesium-based solidHydrogen charging quantity m of hydrogen storage and transportation device 1H2Calculated by the following formula:
here, vinData for real-time detection of the first flow meter 22, and voutReal-time detection data for the second flow meter 32, cinAnd coutThe concentrations of hydrogen gas detected by the first hydrogen concentration detector 21 and the second hydrogen concentration detector 31, t1And t2The time for starting and ending the hydrogen storage of the magnesium-based solid hydrogen storage and transportation device 1 is respectively; when m isH2When the hydrogen is equal to the rated hydrogen charging amount of the magnesium-based solid hydrogen storage and transportation device 1, the first valve 23 and the second valve 33 are closed;
s4: stopping introducing the heat exchange medium, discharging the heat exchange medium in the heat exchange cavity 112, and vacuumizing the storage cavity 111 after the magnesium-based solid hydrogen storage of the magnesium-based solid hydrogen storage and transportation device 1 is cooled, thereby removing the natural gas inside.
Wherein, the partial pressure of hydrogen of the mixed gas flowing into the magnesium-based solid hydrogen storage and transportation device is not lower than 0.1 MPa.
The magnesium-based solid hydrogen storage material can be one or more of pure magnesium, magnesium alloy and magnesium-based composite material.
Example 1
The magnesium-based solid hydrogen storage and transportation device 1 has the rated hydrogen storage capacity of 1000kg and the hydrogen charging time of 10h, and consists of 10 magnesium-based hydride tanks with the length-diameter ratio of 4. The 5 magnesium-based solid hydrogen storage and transportation devices 1 are connected in the manner of the attached figure 1. The heat conducting oil device 7 is connected with the magnesium-based solid hydrogen storage and transportation device 1. The hydrogen concentration of the mixed gas is 10 percent, and the hydrogen partial pressure is 0.4 MPa. Firstly, heat conduction oil is heated to 120 ℃ by adopting heat conduction oil equipment, and 5 magnesium-based solid hydrogen storage and transportation devices 1 are heated. When the temperature of the magnesium-based solid hydrogen storage and transportation device 1 rises to 115 ℃, the valve is opened, and the mixed gas flows into the magnesium-based solid hydrogen storage and transportation device 1 at the rated flow rate of 20m/s for hydrogen charging. The magnesium-based solid hydrogen storage and transportation device 1 absorbs hydrogen in the mixed gas in the hydrogen filling process, and the volume fraction of the hydrogen in the mixed gas flowing out of the magnesium-based solid hydrogen storage and transportation device 1 is 0.5%. The temperature of the heat conducting oil flowing out of the magnesium-based solid hydrogen storage and transportation device 1 is 180 ℃. The heat transfer oil is cooled and maintained at 120 ℃ by using a heat transfer oil device 7. The mixture gas flowing out flows into the natural gas pipeline 4 through the gas confluence device 6. The hydrogen filling amount of each magnesium-based solid hydrogen storage and transportation device 1 is calculated according to the flux of the mixed gas calculated by the gas metering device and the volume fraction of hydrogen in the mixed gas flowing into and out of the magnesium-based solid hydrogen storage and transportation device 1. And when the hydrogen charging amount reaches 980kg, stopping charging hydrogen, and replacing the magnesium-based solid hydrogen storage and transportation device 1 to continuously absorb hydrogen. After hydrogen is charged in each magnesium-based solid hydrogen storage and transportation device 1, standing for 5h until the internal temperature of the magnesium-based solid hydrogen storage and transportation device 1 is reduced to below 60 ℃, vacuumizing the magnesium-based solid hydrogen storage and transportation device 1 for 1h until the pressure in the magnesium-based solid hydrogen storage and transportation device 1 is less than 100Pa, and discharging residual natural gas in the magnesium-based solid hydrogen storage and transportation device 1. Finally, each magnesium-based solid hydrogen storage and transportation device 1 storing 980kg of magnesium is loaded on a heavy truck and transported to a hydrogenation station as a hydrogen source of the hydrogenation station.
Example 2
The magnesium-based solid hydrogen storage and transportation device 1 has the rated hydrogen storage capacity of 1000kg and the hydrogen charging time of 10h, and consists of 8 magnesium-based hydride tanks with the length-diameter ratio of 2. 10 magnesium-based solid hydrogen storage and transportation devices 1 are connected in the manner of figure 1. The heat conducting oil device 7 is connected with the magnesium-based solid hydrogen storage and transportation device 1. The hydrogen concentration of the mixed gas is 8 percent, and the hydrogen partial pressure is 0.2 MPa. Firstly, heat conduction oil is heated to 100 ℃ by adopting heat conduction oil equipment, and 10 magnesium-based solid hydrogen storage and transportation devices 1 are heated. When the temperature of the magnesium-based solid hydrogen storage and transportation device 1 rises to 95 ℃, the valve is opened, and the mixed gas flows into the magnesium-based solid hydrogen storage and transportation device 1 at the rated flow rate of 22m/s for hydrogen charging. The magnesium-based solid hydrogen storage and transportation device 1 absorbs hydrogen in the mixed gas in the hydrogen filling process, and the volume fraction of the hydrogen in the mixed gas flowing out of the magnesium-based solid hydrogen storage and transportation device 1 is 0.12%. The temperature of the heat-conducting oil flowing out of the magnesium-based solid hydrogen storage and transportation device 1 is 160 ℃. The heat transfer oil is cooled and maintained at 100 ℃ by using a heat transfer oil device 7. The mixture gas flowing out flows into the natural gas pipeline 4 through the gas confluence device 6. The hydrogen filling amount of each magnesium-based solid hydrogen storage and transportation device 1 is calculated according to the flux of the mixed gas calculated by the gas metering device and the volume fraction of hydrogen in the mixed gas flowing into and out of the magnesium-based solid hydrogen storage and transportation device 1. And when the hydrogen charging amount reaches 980kg, stopping charging hydrogen, and replacing the magnesium-based solid hydrogen storage and transportation device 1 to continuously absorb hydrogen. After hydrogen is charged in each magnesium-based solid hydrogen storage and transportation device 1, standing for 5h until the internal temperature of the magnesium-based solid hydrogen storage and transportation device 1 is reduced to below 60 ℃, vacuumizing the magnesium-based solid hydrogen storage and transportation device 1 for 1h until the pressure in the magnesium-based solid hydrogen storage and transportation device 1 is less than 100Pa, and discharging residual natural gas in the magnesium-based solid hydrogen storage and transportation device 1. Finally, each magnesium-based solid hydrogen storage and transportation device 1 storing 980kg of magnesium is loaded on a heavy truck and transported to a hydrogenation station as a hydrogen source of the hydrogenation station.
The above is not relevant and is applicable to the prior art.
While certain specific embodiments of the present invention have been described in detail by way of illustration, it will be understood by those skilled in the art that the foregoing is illustrative only and is not limiting of the scope of the invention, as various modifications or additions may be made to the specific embodiments described and substituted in a similar manner by those skilled in the art without departing from the scope of the invention as defined in the appending claims. It should be understood by those skilled in the art that any modifications, equivalents, improvements and the like made to the above embodiments in accordance with the technical spirit of the present invention are included in the scope of the present invention.
Claims (8)
1. The equipment for extracting and transporting hydrogen in the hydrogen-doped natural gas is characterized in that: the magnesium-based solid hydrogen storage and transportation device (1) comprises at least one magnesium-based solid hydrogen storage and transportation device (1), wherein the magnesium-based solid hydrogen storage and transportation device (1) comprises a hydrogen storage chamber (11), the hydrogen storage chamber (11) comprises a storage cavity (111) for containing magnesium-based solid hydrogen storage materials and a heat exchange cavity (112) for circulating heat exchange media, the storage cavity (111) is communicated with a natural gas pipeline (4) through an air inlet pipe (2) and an air outlet pipe (3), the air inlet pipe (2) is provided with a first hydrogen concentration detector (21), a first flowmeter (22) and a first valve (23), the air outlet pipe (3) is further provided with a second hydrogen concentration detector (31), a second flowmeter (32) and a second valve (33), and the heat exchange cavity (112) is provided with an inlet and an outlet which are communicated with the outside.
2. The apparatus for extracting hydrogen from a carrier gas as claimed in claim 1, wherein: the equipment comprises a plurality of magnesium-based solid hydrogen storage and transportation devices (1), a gas flow dividing device (5) is arranged between a natural gas pipeline (4) and a plurality of gas inlet pipes (2), and a gas confluence device (6) is arranged between the natural gas pipeline (4) and a plurality of gas outlet pipes (3).
3. The apparatus for extracting hydrogen from a carrier gas as claimed in claim 1, wherein: the equipment further comprises a heat conduction oil device (7), the heat conduction oil device (7) comprises an oil tank (71) and a temperature control mechanism (72) used for adjusting the temperature of oil in the oil tank (71), the oil tank (71) is communicated with an inlet and an outlet of the heat exchange cavity (112) to form a circulation loop through an oil inlet pipe (73) and an oil outlet pipe (74), a third valve (731) and a circulation pump (732) are arranged on the oil inlet pipe (73), and a fourth valve (741) is arranged on the oil outlet pipe (74).
4. The apparatus for extracting hydrogen from a carrier gas as claimed in claim 3, wherein: the temperature control mechanism (72) comprises a heating assembly (721) for heating the heat conduction oil, a refrigerating assembly (722) for cooling the heat conduction oil and a temperature sensor (723) for detecting the temperature of the heat conduction oil.
5. The apparatus for extracting hydrogen from a carrier gas as claimed in claim 3, wherein: the equipment further comprises a purging device (8), wherein the purging device (8) is detachably communicated with the heat exchange cavity (112) through a blowing pipe (81).
6. The apparatus for extracting hydrogen from a carrier gas as claimed in claim 3, wherein: the equipment further comprises an air suction pump (9), wherein the air suction pump (9) is detachably communicated with the storage cavity (111) through an air suction pipe (91).
7. The apparatus for extracting hydrogen from a carrier gas as claimed in claim 1, wherein: the magnesium-based solid hydrogen storage includes one or more of pure magnesium, magnesium alloy and magnesium-based composite material.
8. A method for extracting hydrogen in natural gas for transporting hydrogen is characterized in that: use of the apparatus according to any of claims 1-7, with the following specific steps:
s1: introducing a heat exchange medium with the temperature of 80-150 ℃ into the heat exchange cavity (112);
s2: opening the first valve (23) and the second valve (33), adjusting the opening degree of the first valve (23) to adjust the flow rate of the hydrogen-doped natural gas, and observing the hydrogen concentration c detected by the second hydrogen concentration detector (31)outWhen c isoutWhen the concentration is 0.01-1%, stopping adjusting the first valve (23), and introducing hydrogen-doped natural gas to the magnesium-based solid hydrogen storage and transportation device (1) at the flow rate;
s3: hydrogen charging amount m of magnesium-based solid hydrogen storage and transportation device (1)H2Calculated by the following formula:
here, vinData for real-time detection of the first flow meter (22), and voutFor real-time detection data of the second flowmeter (32), cinAnd coutThe concentrations of hydrogen gas detected by a first hydrogen concentration detector (21) and a second hydrogen concentration detector (31), t1And t2The time for starting and ending hydrogen storage of the magnesium-based solid hydrogen storage and transportation device (1) is respectively; when m isH2When the hydrogen storage and transportation device (1) is equal to the rated hydrogen charging amount of the magnesium-based solid hydrogen storage and transportation device, the first valve (23) and the second valve (33) are closed;
s4: stopping introducing the heat exchange medium, discharging the heat exchange medium in the heat exchange cavity (112), and vacuumizing the storage cavity (111) after the magnesium-based solid hydrogen storage object of the magnesium-based solid hydrogen storage and transportation device (1) is cooled to remove the internal natural gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110698308.8A CN113566113B (en) | 2021-06-23 | 2021-06-23 | Equipment and method for extracting and transporting hydrogen in hydrogen-doped natural gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110698308.8A CN113566113B (en) | 2021-06-23 | 2021-06-23 | Equipment and method for extracting and transporting hydrogen in hydrogen-doped natural gas |
Publications (2)
| Publication Number | Publication Date |
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| CN113566113A true CN113566113A (en) | 2021-10-29 |
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| CN115108531A (en) * | 2022-07-19 | 2022-09-27 | 西安交通大学城市学院 | Continuous hydrogen purification system and process for hydrogen-doped natural gas |
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