CN212157863U - Portable low-temperature equipment for polarizing hydrogen - Google Patents
Portable low-temperature equipment for polarizing hydrogen Download PDFInfo
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- CN212157863U CN212157863U CN202020876249.XU CN202020876249U CN212157863U CN 212157863 U CN212157863 U CN 212157863U CN 202020876249 U CN202020876249 U CN 202020876249U CN 212157863 U CN212157863 U CN 212157863U
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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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Abstract
A portable cryogenic device for polarizing hydrogen gas comprising: the refrigerator thermostat comprises a refrigerator cold head, an instrument skirt, a shell, a plurality of cold platforms, a hydrogen pipeline, a plurality of catalytic reaction cavities, a plurality of thermometers and a heater; the refrigerator thermostat is a main device for polarizing hydrogen, and the hydrogen can be solidified without consuming liquid helium; the hydrogen is polarized through an internal hydrogen pipeline and a two-stage catalytic reaction cavity; part of hydrogen pipelines and the primary catalytic reaction cavity are thermally anchored on a primary cooling table of the refrigerator, and precooling and primary catalysis are carried out with the aid of a catalyst; the hydrogen can be liquefied and even solidified after entering the secondary catalytic reaction cavity, and the conversion of the hydrogen into parahydrogen is accelerated. The utility model provides high parahydrogen's conversion efficiency and purity, the parahydrogen after will purifying rises to be convenient for store for a long time after the room temperature.
Description
Technical Field
The utility model belongs to the technical field of low temperature physics experimental apparatus, specifically say so, be one kind and not consume liquid helium can provide the equipment of low temperature environment for polarization parahydrogen experiment.
Background
The para-hydrogen can be used for preparing a nuclear magnetic resonance spectrum or a hyperpolarization substrate for preclinical nuclear magnetic imaging, enhances nuclear magnetic resonance signals, and has wide application prospects in the fields of medicine, biology, chemistry, physics, energy, aerospace and the like.
Generally, hydrogen molecules are composed of two spin isomer mixtures of orthohydrogen (Ortho-H2) and parahydrogen (Para-H2), wherein hydrogen molecules with the same nuclear spin direction are orthohydrogen, and hydrogen molecules with the opposite nuclear spin direction are parahydrogen. The equilibrium component ratio of orthohydrogen to parahydrogen is closely related to the temperature, for example, the equilibrium component ratio of parahydrogen is about 25% at 273K and the equilibrium component ratio of parahydrogen exceeds 99.8% at 20K.
The composition ratio of para-hydrogen in a hydrogen mixture can in principle be varied by changing the temperature, but since the transition between ortho-hydrogen and para-hydrogen involves a change in the nuclear spin (magnetic), the spontaneous transition between ortho-hydrogen and para-hydrogen is slow without a catalyst. At low temperature and with suitable catalysts (e.g. activated carbon, Fe)2O3、CrO:SiO2Etc.) can accelerate the conversion of orthohydrogen to parahydrogen. The process of converting para-hydrogen after purification into ortho-hydrogen is slow and can be stored for a long time.
The device of polarization hydrogen at present conversion efficiency is low, and is consuming time longer, and the instrument is heavy, can't obtain high-purity parahydrogen under specific environment convenient fast.
SUMMERY OF THE UTILITY MODEL
The utility model provides a low temperature equipment of portable polarization hydrogen under the condition that need not consume liquid helium, utilizes the refrigerator to give high-purity hydrogen cooling to add the catalyst and assist with higher speed orthohydrogen to the conversion of parahydrogen, used equipment integration is convenient for remove in the integral type rack.
In order to realize the purpose, the utility model discloses a technical scheme as follows:
a portable cryogenic device for polarizing hydrogen gas comprising: refrigerator thermostat 21, compressor 17, temperature control appearance 20 and vacuum pump package 19, its characterized in that:
the refrigerator thermostat 21 comprises a refrigerator cold head 1, an instrument skirt 2, a shell 3, a primary cold stage 16, a secondary cold stage 5, a hydrogen pipeline 9, a catalytic reaction cavity and a plurality of thermometers and heaters, wherein the shell 3 is internally provided with a vacuum cavity, and the primary cold stage 16, the secondary cold stage 5, the hydrogen pipeline 9, the catalytic reaction cavity and the plurality of thermometers and heaters are all arranged in the vacuum cavity;
the refrigerator cold head 1, the instrument skirt 2, the primary cold platform 16 and the secondary cold platform 5 are sequentially arranged from top to bottom;
the instrument skirt 2 is provided with a vacuum electrical connector, a vacuumizing interface 6, a hydrogen introducing port assembly 7 and a hydrogen outlet 8;
the catalytic reaction cavity comprises a primary catalytic reaction cavity 10 for pre-cooling and primarily catalyzing hydrogen and a secondary catalytic reaction cavity 15 for liquefying or solidifying hydrogen, and the primary catalytic reaction cavity 10 is arranged below the primary cooling table 16;
the secondary catalytic reaction cavity 15 is arranged below the secondary cooling platform 5;
the hydrogen pipelines 9 are respectively arranged between the hydrogen inlet assembly 7 and the primary catalytic reaction cavity 10, between the primary catalytic reaction cavity 10 and the secondary catalytic reaction cavity 15, and between the secondary catalytic reaction cavity 15 and the hydrogen outlet 8, so that a hydrogen flow channel is formed in the vacuum cavity;
the refrigerator cold head 1 is connected with the compressor 17 through a helium inlet and a helium outlet respectively to form a helium circulation loop;
the temperature controller 20 is electrically connected with a plurality of thermometers and heaters through the vacuum electric connector;
the vacuum pump set 19 is respectively connected with the vacuumizing interface 6 and the hydrogen pipeline vacuumizing interface of the hydrogen introducing port assembly 7.
The utility model discloses still further adopt following preferred technical scheme:
the refrigerator thermostat 21, the compressor 17, the temperature controller 20 and the vacuum pump unit 19 are integrated in the cabinet 18.
The hydrogen introducing port assembly 7 comprises a hydrogen pipeline vacuumizing interface, a vacuum gauge, a hydrogen inlet interface and an internal hydrogen pipeline interface;
the vacuum gauge is arranged at the interface of the internal hydrogen pipeline and is used for measuring and displaying the pressure in the hydrogen pipeline 9;
the hydrogen inlet interface is connected with a hydrogen supply device;
the internal hydrogen pipeline interface is connected with the hydrogen pipeline 9.
And a cold screen 4 is also arranged in the vacuum cavity, and the cold screen 4 is fixed on the primary cold table 16.
The thermometers and heaters include a first thermometer and heater 14, a second thermometer and heater, and a third thermometer and heater 13;
the first thermometer and heater 14 is provided on the hydrogen line 9 at the hydrogen outlet 8;
the second thermometer and the heater are arranged on the primary cooling table 16;
the third thermometer and heater 13 are disposed on the outer wall of the secondary catalytic reaction chamber 15.
The hydrogen pipeline 9 is a stainless steel capillary.
The pre-cooling part of the hydrogen pipeline 9 is thermally anchored to the primary cooling stage 16.
A filter 11 for preventing the solidified hydrogen from blocking the hydrogen pipeline 9 is arranged below the secondary catalytic reaction cavity 15; and sealed by an indium sealing flange 12.
The refrigerator cold head 1 is a bakeable two-stage GM machine cold head.
The compressor 17 is an air-cooled helium compressor.
The utility model discloses following technological effect has:
the utility model discloses under the liquid helium condition need not to consume, utilize low temperature equipment to give high-purity hydrogen cooling and add the catalyst and assist and can accelerate the conversion of orthohydrogen to parahydrogen, improved parahydrogen's conversion efficiency and purity. And the device has a continuous flow mode of operation and a single shot mode of operation. The continuous flow mode of operation may convert flowing ortho-hydrogen to para-hydrogen at low hydrogen flow rates. While the single-shot mode of operation may convert a certain amount of orthohydrogen for a longer period of time, the hydrogen gas may be liquefied or solidified in order to increase the purity of parahydrogen.
Drawings
Fig. 1 is a schematic diagram of a portable cryogenic device for polarizing hydrogen gas in accordance with the present invention.
Fig. 2 is a front view of the refrigerator thermostat of the portable polarized hydrogen cryogenic apparatus of the present invention.
The refrigerator comprises a refrigerator cold head 1, a refrigerator cold head 2, an instrument skirt 3, a vacuum shell 4, a cold screen 5, a secondary cold stage 6, a vacuumizing port 7, a hydrogen inlet 8, a hydrogen outlet 9, a hydrogen pipeline 10, a primary catalytic reaction cavity 11, a filter 12, an indium sealing flange 13, a third thermometer, a heater 14, a first thermometer, a heater 15, a secondary catalytic reaction cavity 16, a primary cold stage 17, a compressor 18, a cabinet 19, a vacuum pump group 20, a temperature control instrument 21 and a refrigerator thermostat.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
FIG. 1 is a schematic diagram of a portable cryogenic apparatus for polarization of hydrogen gas in accordance with the present invention; fig. 2 is a front view of the refrigerator thermostat 21 of the portable polarized hydrogen cryogenic apparatus of the present invention, as shown in fig. 1 and fig. 2, the present invention provides a portable polarized hydrogen cryogenic apparatus comprising: a refrigerator thermostat 21, a compressor 17, a temperature controller 20, and a vacuum pump set 19.
The refrigerator thermostat 21, the compressor 17, the temperature controller 20 and the vacuum pump unit 19 are integrated in the cabinet 18. Cabinet 18 is provided with casters that can be moved and locked so that the cryogenic equipment for polarized hydrogen can be moved and secured as needed at any time.
The refrigerator thermostat 21 comprises a refrigerator cold head 1, an instrument skirt 2, a shell 3, a cold screen 4, a cold platform, a hydrogen pipeline 9, a primary catalytic reaction chamber 10, a secondary catalytic reaction chamber 15, a filter plate 11, a first thermometer and a heater 14, a second thermometer and a heater, and a third thermometer and a heater 13, and a vacuum chamber is arranged in the shell 3. The cold screen 4, the cold platform, the hydrogen pipeline 9, the primary catalytic reaction cavity 10, the secondary catalytic reaction cavity 15, the filter plate 11 and a plurality of thermometers and heaters are all arranged in the vacuum cavity.
Wherein, the cold platform includes one-level cold platform 16 and second grade cold platform 5. Furthermore, the refrigerator cold head 1, the instrument skirt 2, the primary cold stage 16 and the secondary cold stage 5 are sequentially arranged from top to bottom.
The refrigerating machine cold head 1 is respectively connected with the compressor 17 through a helium inlet and a helium outlet to form a helium circulation loop. Namely, the high-pressure room-temperature helium gas is transmitted to the cold head 1 of the refrigerator through the helium gas transmission pipeline and the helium gas inlet for expansion refrigeration, and the expanded low-pressure room-temperature helium gas is transmitted to the inside of the compressor 17 through the other helium gas transmission pipeline and the helium gas outlet to be converted into the high-pressure helium gas, and the operation is repeated in a circulating manner. The catalyst needs to be heated for regeneration after losing activity, the temperature in the vacuum cavity can reach more than 350K, but the maximum working temperature which can be borne by a standard second-grade GM cold head does not exceed 325K, so that the cold head of a refrigerating machine can be damaged when the catalyst is heated and regenerated. The cold head that can toast the type can bear the highest operating temperature and be more than 370K to this refrigerator cold head still can normally work when guaranteeing to toast catalyst heating, consequently the utility model discloses in, the preferred type second grade GM machine cold head that can toast that uses. The compressor 17 employs an air-cooled helium compressor.
The instrument skirt 2 is a place where connection parts such as an electrical connector and a vacuum pumping port are collectively installed together to realize connection of related parts in the cryostat and an external instrument. The instrument skirt 2 is provided with a vacuum electrical connector, a vacuumizing interface 6, a hydrogen introducing port assembly 7 and a hydrogen outlet 8. The temperature controller 20 is electrically connected with the first thermometer and heater 14, the second thermometer and heater, and the third thermometer and heater 13 in the vacuum chamber through electrical leads and vacuum electrical connectors, and the temperature of the positions of the thermometers and heaters is monitored and controlled by using a PID temperature control program built in the temperature controller 20.
The hydrogen introducing port component 7 comprises a hydrogen pipeline vacuumizing interface, a vacuum gauge, a hydrogen inlet interface and an internal hydrogen pipeline interface; the hydrogen pipeline vacuumizing interface is connected with a vacuum pump set 20, and the hydrogen pipeline 9 is pumped by the vacuum pump set 19 to achieve a vacuum environment; the vacuum gauge is arranged at the interface of the hydrogen pipeline inside the hydrogen gas, and measures and displays the pressure in the hydrogen pipeline 9; the hydrogen inlet interface is connected with hydrogen supply equipment; the internal hydrogen pipeline interface is connected with a hydrogen pipeline 9.
The vacuum pump set 19 is also connected with the vacuumizing interface 6 and the hydrogen pipeline vacuumizing interface, and pumps the inside of the shell 3 to ensure that the inside of the shell reaches a vacuum environment.
The hydrogen pipeline 9 at the hydrogen outlet 8 is provided with a first thermometer and a heater 14, so that the polarized parahydrogen can be recovered to the room temperature, and the storage is convenient.
The vacuumizing interface 6, the hydrogen introducing port assembly 7 and the hydrogen outlet 8 are all provided with valves for controlling the opening and closing of the vacuumizing interface 6, the hydrogen introducing port assembly 7 and the hydrogen outlet 8.
The primary cooling table 16 is fixed with a cold screen 4, a second thermometer and a heater, and a primary catalytic reaction chamber 10. Moreover, the hydrogen pipeline 9 is a stainless steel capillary, and part of the hydrogen pipeline 9 is thermally anchored on the primary cooling table 16 to pre-cool the hydrogen. The primary catalytic reaction chamber 10 is filled with a catalyst, and the cold energy of the primary cooling table 16 is utilized to pre-cool and primarily catalyze the hydrogen so as to improve the purity and the yield of the parahydrogen.
The second thermometer and heater can monitor and control the temperature of the primary cooling stage 16, and can heat and bake the catalyst in the primary catalytic reaction chamber 10 to regenerate the catalyst quickly.
The secondary cooling table 5 is provided with a secondary catalytic reaction cavity 15, the catalyst is filled in the secondary catalytic reaction cavity 15, precooled and preliminarily catalyzed hydrogen can be liquefied (20.3K) and even solidified (14K), and almost all hydrogen can be converted into parahydrogen so as to obtain high-purity parahydrogen.
The third thermometer and the heater 13 can carry out temperature changing and control on the secondary catalytic reaction cavity 15, and the temperature changing and control can be carried out with high precision within the range of 14K-30K by combining with the temperature controller 20.
A filter 11 is arranged below the secondary catalytic reaction cavity 15 and used for preventing the solidified hydrogen from blocking the hydrogen pipeline 9. The filter plate 11 is sealed by an indium sealing flange 12.
The hydrogen pipelines 9 are respectively arranged between the hydrogen inlet assembly 7 and the primary catalytic reaction cavity 10, between the primary catalytic reaction cavity 10 and the secondary catalytic reaction cavity 15, and between the secondary catalytic reaction cavity 15 and the hydrogen outlet 8, so that a hydrogen flow channel is formed in the vacuum cavity.
This system adopts portable design, and the required part of polarization hydrogen all integrates in the integral type rack, is convenient for remove. The refrigerator thermostat provides a proper temperature environment for the polarized parahydrogen, and the exquisite hydrogen pipeline and catalytic reaction cavity design improves the purity of the prepared parahydrogen and improves the efficiency of the system for polarizing parahydrogen. The system has a continuous flow mode of operation and a single shot mode of operation. The continuous flow mode of operation may convert flowing ortho-hydrogen to para-hydrogen at low hydrogen flow rates. While the single-shot mode of operation may convert a certain amount of orthohydrogen for a longer period of time, the hydrogen gas may be liquefied or solidified in order to increase the purity of parahydrogen.
When the system works, firstly, the temperature control instrument is started, and the temperature value which is expected to be reached is set; and opening the compressor and the refrigerator thermostat to cool. And secondly, opening a vacuum pump group to be connected with a vacuumizing interface of the vacuum cavity and a vacuumizing interface at a hydrogen inlet through a corrugated pipe, vacuumizing the vacuum cavity and the hydrogen pipeline, and closing a corresponding valve and the vacuum pump group after the vacuum degree and the temperature meet the requirements. And finally, opening a hydrogen inlet valve, enabling the hydrogen to enter a hydrogen pipeline and then enter a primary catalytic reaction cavity, primarily polarizing the hydrogen with the aid of a catalyst, and then enabling the hydrogen to enter a secondary catalytic reaction cavity, fully polarizing the hydrogen within the range of 14-30K, and converting the hydrogen into parahydrogen. The polarized parahydrogen enters a hydrogen pipeline, reaches a hydrogen outlet after being heated to the room temperature, enters a collecting device and is stored at the room temperature.
Although some specific embodiments of the present invention have been described in detail by way of illustration, it should be understood by those skilled in the art that the above illustration is only for purposes of illustration and is not intended to limit the scope of the invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (10)
1. A portable cryogenic device for polarizing hydrogen gas comprising: refrigerator thermostat (21), compressor (17), temperature control appearance (20) and vacuum pump package (19), its characterized in that:
the refrigerator thermostat (21) comprises a refrigerator cold head (1), an instrument skirt (2), a shell (3), a primary cold platform (16), a secondary cold platform (5), a hydrogen pipeline (9), a catalytic reaction cavity, a plurality of thermometers and heaters, wherein the shell (3) is internally provided with a vacuum cavity, and the primary cold platform (16), the secondary cold platform (5), the hydrogen pipeline (9), the catalytic reaction cavity, the plurality of thermometers and the heaters are all arranged in the vacuum cavity;
the refrigerator cold head (1), the instrument skirt (2), the primary cold platform (16) and the secondary cold platform (5) are sequentially arranged from top to bottom;
the instrument skirt (2) is provided with a vacuum electrical connector, a vacuumizing interface (6), a hydrogen introducing port assembly (7) and a hydrogen outlet (8);
the catalytic reaction cavity comprises a primary catalytic reaction cavity (10) for pre-cooling and primarily catalyzing hydrogen and a secondary catalytic reaction cavity (15) for liquefying or solidifying hydrogen, and the primary catalytic reaction cavity (10) is arranged below the primary cooling platform (16);
the secondary catalytic reaction cavity (15) is arranged below the secondary cooling platform (5);
the hydrogen pipelines (9) are respectively arranged between the hydrogen inlet component (7) and the primary catalytic reaction cavity (10), between the primary catalytic reaction cavity (10) and the secondary catalytic reaction cavity (15), and between the secondary catalytic reaction cavity (15) and a hydrogen outlet (8), so that a hydrogen flow channel is formed in the vacuum cavity;
the refrigerating machine cold head (1) is connected with the compressor (17) through a helium inlet and a helium outlet respectively to form a helium circulating loop;
the temperature controller (20) is electrically connected with a plurality of thermometers and heaters through the vacuum electric connector;
and the vacuum pump set (19) is respectively connected with the vacuumizing interface (6) and the hydrogen pipeline vacuumizing interface of the hydrogen introducing port assembly (7).
2. A portable cryogenic device for polarizing hydrogen gas as claimed in claim 1, wherein:
the refrigerator thermostat (21), the compressor (17), the temperature control instrument (20) and the vacuum pump group (19) are integrated in a cabinet (18).
3. A portable cryogenic apparatus for polarizing hydrogen gas as claimed in claim 2, wherein:
the hydrogen introducing port assembly (7) comprises a hydrogen pipeline vacuumizing interface, a vacuum gauge, a hydrogen inlet interface and an internal hydrogen pipeline interface;
the vacuum gauge is arranged at the interface of the internal hydrogen pipeline and is used for measuring and displaying the pressure in the hydrogen pipeline (9);
the hydrogen inlet interface is connected with a hydrogen supply device;
the internal hydrogen pipeline interface is connected with the hydrogen pipeline (9).
4. A portable cryogenic apparatus for polarizing hydrogen gas as claimed in claim 1 or 2, wherein:
and a cold screen (4) is also arranged in the vacuum cavity, and the cold screen (4) is fixed on the primary cold table (16).
5. A portable cryogenic apparatus for polarizing hydrogen gas as claimed in claim 1 or 2, wherein:
the thermometer and heater comprises a first thermometer and heater (14), a second thermometer and heater and a third thermometer and heater (13);
the first thermometer and heater (14) being arranged on the hydrogen line (9) at the hydrogen outlet (8);
the second thermometer and the heater are arranged on the primary cooling table (16);
the third thermometer and the heater (13) are arranged on the outer wall of the secondary catalytic reaction cavity (15).
6. A portable cryogenic apparatus for polarizing hydrogen gas as claimed in claim 1 or 2, wherein:
the hydrogen pipeline (9) is a stainless steel capillary.
7. The portable cryogenic device for polarizing hydrogen of claim 6, wherein:
the precooling part of the hydrogen pipeline (9) is thermally anchored on the primary cold stage (16).
8. A portable cryogenic apparatus for polarizing hydrogen gas as claimed in claim 1 or 2, wherein:
a filter (11) for preventing the solidified hydrogen from blocking the hydrogen pipeline (9) is arranged below the secondary catalytic reaction cavity (15); and sealed by an indium sealing flange (12).
9. A portable cryogenic apparatus for polarizing hydrogen gas as claimed in claim 1 or 2, wherein:
the refrigerator cold head (1) is a bakeable two-stage GM machine cold head.
10. A portable cryogenic apparatus for polarizing hydrogen gas as claimed in claim 1 or 2, wherein:
the compressor (17) is an air-cooled helium compressor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020876249.XU CN212157863U (en) | 2020-05-22 | 2020-05-22 | Portable low-temperature equipment for polarizing hydrogen |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020876249.XU CN212157863U (en) | 2020-05-22 | 2020-05-22 | Portable low-temperature equipment for polarizing hydrogen |
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| CN212157863U true CN212157863U (en) | 2020-12-15 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112645281A (en) * | 2020-12-30 | 2021-04-13 | 同济大学 | Ortho-para hydrogen conversion device and ortho-para hydrogen conversion method |
| CN112808176A (en) * | 2020-12-30 | 2021-05-18 | 同济大学 | Device and method for converting orthoparahydrogen |
| CN117160369A (en) * | 2023-11-01 | 2023-12-05 | 中海石油气电集团有限责任公司 | Method and device for catalytic conversion of normal-para-hydrogen by continuous and efficient operation of catalyst |
-
2020
- 2020-05-22 CN CN202020876249.XU patent/CN212157863U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112645281A (en) * | 2020-12-30 | 2021-04-13 | 同济大学 | Ortho-para hydrogen conversion device and ortho-para hydrogen conversion method |
| CN112808176A (en) * | 2020-12-30 | 2021-05-18 | 同济大学 | Device and method for converting orthoparahydrogen |
| CN112645281B (en) * | 2020-12-30 | 2022-09-16 | 同济大学 | Ortho-para hydrogen conversion device and ortho-para hydrogen conversion method |
| CN112808176B (en) * | 2020-12-30 | 2022-09-20 | 同济大学 | Orthopara-hydrogen conversion device and orthopara-hydrogen high-performance conversion method |
| CN117160369A (en) * | 2023-11-01 | 2023-12-05 | 中海石油气电集团有限责任公司 | Method and device for catalytic conversion of normal-para-hydrogen by continuous and efficient operation of catalyst |
| CN117160369B (en) * | 2023-11-01 | 2024-04-09 | 中海石油气电集团有限责任公司 | Method and device for catalytic conversion of normal-para-hydrogen by continuous and efficient operation of catalyst |
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Address after: 100085 no.1027, 1st floor, area a, No.1 South anningzhuang back street, Haidian District, Beijing Patentee after: BEIJING PHYSIKE TECHNOLOGY Co.,Ltd. Address before: 100085 no.1027, 1st floor, Lin 831-nei 1, Changping Road, Anning North Road, Haidian District, Beijing Patentee before: BEIJING PHYSIKE TECHNOLOGY Co.,Ltd. |