CN115340068A - Hydrogen isotope purification device - Google Patents
Hydrogen isotope purification device Download PDFInfo
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- CN115340068A CN115340068A CN202211011009.3A CN202211011009A CN115340068A CN 115340068 A CN115340068 A CN 115340068A CN 202211011009 A CN202211011009 A CN 202211011009A CN 115340068 A CN115340068 A CN 115340068A
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- cavity
- tube bundle
- palladium
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B4/00—Hydrogen isotopes; Inorganic compounds thereof prepared by isotope exchange, e.g. NH3 + D2 → NH2D + HD
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Abstract
An embodiment of the present application provides a hydrogen isotope purification apparatus, including: a cavity; the air inlet pipeline is communicated with the cavity and is used for introducing air into the cavity; the palladium tube bundle is arranged in the cavity, one end of the palladium tube bundle is closed, and the other end of the palladium tube bundle is communicated with the outside of the cavity; the first gas outlet pipeline is communicated with the cavity and is used for leading out gas in the cavity; the heating element is connected with the cavity and used for heating the palladium tube bundle so that hydrogen isotopes in the gas introduced into the cavity can permeate into the tube cavity of the palladium tube bundle. The hydrogen isotope purification device that this application embodiment provided is comparatively simple in construction to integrated the heating member, make the hot homogeneity of palladium membrane better, purification efficiency obtains promoting.
Description
Technical Field
The application relates to the technical field of hydrogen isotope treatment, in particular to a hydrogen isotope purification device.
Background
The hydrogen isotope purification process is usually realized by using a palladium membrane, and the hydrogen isotope purification apparatus in the related art is usually complex in structure and difficult to be integrated well in the hydrogen isotope preparation system, and it usually needs to heat the palladium membrane by using an external heating device, resulting in poor thermal uniformity of the palladium membrane and performance loss.
Disclosure of Invention
In view of the above problems, the present application has been made to provide a hydrogen isotope purification apparatus that overcomes or at least partially solves the above problems.
An embodiment of the present application provides a hydrogen isotope purification apparatus, including: a cavity; the air inlet pipeline is communicated with the cavity and is used for introducing air into the cavity; the palladium tube bundle is arranged in the cavity, one end of the palladium tube bundle is closed, and the other end of the palladium tube bundle is communicated with the outside of the cavity; the first gas outlet pipeline is communicated with the cavity and is used for leading out gas in the cavity; the heating element is connected with the cavity and used for heating the palladium tube bundle so that hydrogen isotopes in the gas introduced into the cavity can permeate into the tube cavity of the palladium tube bundle.
The hydrogen isotope purification device that this application embodiment provided is comparatively simple in construction to integrated the heating member, make the hot homogeneity of palladium membrane better, purification efficiency obtains promoting.
Drawings
Fig. 1 is a schematic view of a hydrogen isotope purification apparatus according to an embodiment of the present application;
fig. 2 is a schematic view of a hydrogen isotope purification apparatus according to another embodiment of the present application;
fig. 3 is a schematic view of a hydrogen isotope purification apparatus according to still another embodiment of the present application.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clear, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present application. It should be apparent that the described embodiment is one embodiment of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the described embodiments of the application without any inventive step, are within the scope of protection of the application.
It is to be noted that, unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. If the description "first", "second", etc. is referred to throughout, the description of "first", "second", etc. is used only for distinguishing similar objects, and is not to be construed as indicating or implying a relative importance, order or number of technical features indicated, it being understood that the data described in "first", "second", etc. may be interchanged where appropriate. If "and/or" is presented throughout, it is meant to include three juxtapositions, exemplified by "A and/or B" and including either scheme A, or scheme B, or schemes in which both A and B are satisfied.
An embodiment of the present application provides a hydrogen isotope purification apparatus, referring to fig. 1, including: a cavity 10; and the air inlet pipeline 20 is communicated with the cavity 10, and the air inlet pipeline 20 is used for introducing gas into the cavity 10. The palladium tube bundle 30 is arranged in the cavity 10, one end of the tube cavity of the palladium tube bundle 30 is closed, and the other end of the tube cavity of the palladium tube bundle 30 is communicated with the outside of the cavity 10. The first gas outlet pipeline 40 is communicated with the cavity 10, and the first gas outlet pipeline 40 is used for leading out gas in the cavity 10. And a heating member 50, the heating member 50 being connected to the chamber 10, the heating member 50 being used to heat the palladium tube bundle 30 so that hydrogen isotopes in the gas introduced into the chamber 10 can permeate into the tube lumens of the palladium tube bundle 30.
The chamber 10 is used for accommodating the palladium tube bundle 30 and the gas to be purified, and the specific shape of the chamber 10 may be set according to the shape of the palladium tube bundle 30, which is not limited in this respect.
The inlet line 20 and the first outlet line 40 may be in gaseous communication with the chamber 10 by means of suitable connecting structures to perform the respective functions. As an example, a flange may be provided on the chamber 10, a through hole for gas flow may be provided on the flange, and the inlet pipe 20 and the first outlet pipe 40 may be in gas communication with the chamber 10 through the through hole on the flange. Preferably, the inlet line 20 and the first outlet line 40 may be hermetically connected to the chamber 10 to prevent leakage of gas resulting in radioactive exposure.
The palladium tube bundle 30 may have a tube bundle structure made of a palladium membrane, hydrogen atoms are dissolved in the palladium membrane to form a solid solution of palladium hydride, and hydrogen has high fluidity in the solid solution, so that hydrogen is easily diffused in palladium, and any gas except hydrogen and its isotopes cannot permeate the palladium membrane, so that hydrogen isotopes can be purified by the palladium membrane.
Specifically, one end of the palladium tube bundle 30 is closed, and the other end may communicate with the outside of the chamber 10, in other words, the palladium tube bundle 30 and the chamber 10 are sealed. After the gas containing hydrogen isotopes is introduced into the cavity 10, the hydrogen isotopes in the gas will permeate into the lumens of the palladium tube bundle 30, the remaining components will be blocked by the palladium tube bundle 30 and stay in the cavity 10, the hydrogen isotopes in the lumens of the palladium tube bundle 30 can be recovered through one end of the palladium tube bundle 30 communicated with the outside of the cavity 10, so as to obtain purified hydrogen isotope gas, and the remaining gas in the cavity 10 can be led out of the cavity 10 through the first gas outlet pipeline 40.
The working temperature of the palladium membrane is generally 300-500 ℃, so that the palladium tube bundle 30 needs to be heated during hydrogen isotope purification, and in the embodiment, the heating member 50 is integrally arranged in the hydrogen isotope purification device, and no external heating device is used for heating the palladium tube bundle 30, so that the structure of the hydrogen isotope purification device is simplified, the thermal uniformity of the palladium tube bundle 30 is ensured, and the purification efficiency is effectively improved. Specifically, the heating member 50 may be connected to the chamber 10, and the heating member 50 may be any suitable heating device, such as a resistance heating wire, etc.
In some embodiments, still referring to fig. 1, the heating member 50 may be disposed at a side wall 11 of the chamber 10, the side wall 11 being a wall extending in the same direction as the palladium tube bundle 30. It will be appreciated that the side wall 11 is the closest wall of the plurality of walls of the chamber 10 to the palladium tube bundle 30, and the arrangement of the heating element 50 on the side wall 11 helps to improve the heating effect of the heating element 50 on the palladium tube bundle 30, and further ensures the thermal uniformity of the palladium tube bundle 30.
In some embodiments, the heating element 50 may include a resistance heating wire, which may be wound around the sidewall 11, and it is understood that the winding is configured to heat the sidewall 11 more uniformly, so that the palladium tube bundle 30 extending in the same direction as the sidewall 11 can also be heated more uniformly.
In some embodiments, referring to fig. 2, a temperature uniforming body 60 may be disposed on the sidewall 11 in a coating manner, and the heating member 50 may be disposed in the temperature uniforming body 60. The temperature equalizing body 60 may be made of a heat conductive material such as copper, which can further ensure that the side wall 11 is uniformly heated, thereby ensuring the thermal uniformity of the palladium tube bundle 30.
The temperature equalizing body 60 can be tightly attached to and completely cover the side wall 11, so as to ensure a good temperature equalizing effect. In some embodiments, the temperature equalizing body 60 may be disposed on a side of the sidewall 11 facing away from the inner space of the cavity 10, so that the temperature equalizing body 60 does not contact the radioactive gas in the cavity 10, thereby ensuring the performance and the service life of the temperature equalizing body 60. In some embodiments, the temperature uniforming body 60 may have a recess provided therein, and the heating member 50 may be disposed in the recess.
In some other embodiments, the heating element 50 may be disposed in other suitable manners, for example, the heating element 50 may be disposed in the chamber 10 and directly heat the palladium tube bundle 30, but this will have higher requirements on the radiation resistance and the service life of the heating element 50.
In some embodiments, the hydrogen isotope purification apparatus further includes a temperature measuring component 70, the temperature measuring component 70 may be disposed in the cavity, and the temperature measuring component 70 may be configured to monitor the temperature in the cavity 10, so as to ensure that the palladium tube bundle 30 works in a relatively proper temperature environment. The temperature measuring member 70 may be a temperature measuring device such as a thermocouple, and is not limited thereto. In some embodiments, the temperature measurement member 70 may also be disposed in the temperature uniforming body 60.
In some embodiments, the palladium tube bundle 30 may include a plurality of palladium tubes 31 extending in the same direction, the hydrogen isotope purification apparatus further includes a gas collecting chamber 32 and a second gas outlet pipeline 33, the gas collecting chamber 32 is hermetically disposed in the cavity 10, one end of each palladium tube 31 is communicated with the gas collecting chamber 32, the other end is closed, the second gas outlet pipeline 33 is communicated with the gas collecting chamber 32, and the second gas outlet pipeline 33 is used for communicating the gas collecting chamber 32 with the outside of the cavity 10.
In this embodiment, the palladium tube bundle 30 is composed of a plurality of palladium tubes 31, and such a structure can increase the effective contact area between the palladium tube bundle 30 and the gas, thereby improving the efficiency of hydrogen isotope purification. It can be understood that, in order to implement the functions described above, one end of the lumen of each palladium tube 31 needs to be sealed, and the other end needs to be communicated with the outside of the cavity 10, and if each palladium tube 31 is directly communicated with the outside of the cavity 10, a plurality of through holes need to be provided on the cavity 10, which would result in difficult sealing and higher cost, for this reason, in this embodiment, a gas collecting cavity 32 and a second gas outlet pipeline 33 are further provided to indirectly communicate one end of each palladium tube 31 with the outside of the cavity 10, so as to effectively reduce the number of openings on the cavity 10, and facilitate ensuring the sealing performance of the cavity 10.
It can be understood that, in the actual use process, the gas inlet pipeline 20, the first gas outlet pipeline 40 and the second gas outlet pipeline 33 need to be connected to the corresponding radioactive process system to complete the relevant functions, and in some embodiments, the gas inlet pipeline 20, the first gas outlet pipeline 40 and the second gas outlet pipeline 33 are hermetically connected to the first end of the cavity 10, that is, the three pipelines are disposed at the same end of the cavity 10, so that the hydrogen isotope purification apparatus can be more conveniently integrated in the radioactive process system, and the occupation of a large space can be avoided.
Further, in practical use, the terminals of some electrical components in the hydrogen co-purification apparatus need to be led out of the chamber 10 and connected to the corresponding power supply devices, such as the heating element 50 and the temperature measuring element 70 mentioned above, for this reason, in some embodiments, referring to fig. 3, the hydrogen isotope purification apparatus further includes an electrical wiring element 80, and the electrical wiring element 80 is hermetically connected to a second end of the chamber 10, which is opposite to the first end. In this embodiment, the electrical wiring member 80 can be used to lead the terminal of the electrical component out of the cavity 10, and the electrical wiring member 80 is disposed at an end away from the pipeline, so that in actual use, the electrical wiring will be away from the radioactive process system described above, thereby ensuring the service life of the electrical wiring. In addition, even when the electric component is damaged, the electric connection member 80 can be used to replace the electric component more conveniently and safely.
In some embodiments, the hydrogen isotope purification apparatus may further include a flow guide 90, the flow guide 90 being disposed in the chamber 10, the flow guide 90 being configured to guide the gas in the chamber 10 to flow from the end of the palladium tube bundle 30 closed to the end of the palladium tube bundle 30 communicating with the outside of the chamber 10. It is understood that in some embodiments described above, the gas inlet pipeline 20 and the first gas outlet pipeline 40 are disposed at the same end of the cavity 10, and in this case, if the diversion member 90 is not used, the fluidity of the gas introduced into the cavity 10 may be poor, so that the gas cannot sufficiently contact with the palladium tube bundle 30, and the hydrogen isotope purification efficiency is low. Flow guides 90 may be provided to direct gas within chamber 10 from the closed end of palladium tube bundle 30 to the end of palladium tube bundle 30 in communication with the exterior of chamber 10 to ensure adequate contact of the gas with palladium tube bundle 30.
In some embodiments, referring to fig. 2-3, the flow guide 90 may be a cylindrical structure disposed outside the palladium tube bundle 30, and the chamber 10, the palladium tube bundle 30, and the flow guide 90 may be coaxially disposed, such that the flow guide 90 actually divides the chamber 10 into an inner chamber and an outer chamber, and the gas will flow in the direction shown by the arrows in fig. 2 after passing into the chamber 10, i.e., first in the outer chamber toward the second end of the chamber 10, and then enter the inner chamber along the opening of the flow guide 90 near the second end of the chamber 10 and flow toward the first end of the chamber 10. In this embodiment, the first outlet line 40 may be configured to communicate with the inner chamber, and the inlet line 20 may be configured to communicate with the outer chamber to achieve the above-described gas flow pattern.
The guiding member 90 in this embodiment not only enables the gas to be sufficiently contacted with the palladium tube bundle 30, but also enables the gas to be sufficiently preheated by the heating member 50 before contacting the palladium tube bundle 30, thereby further improving the efficiency of hydrogen isotope purification.
In some embodiments, a filter 100 may be further disposed in the cavity 10, and the filter 100 is used for filtering the gas entering the cavity 10. It will be understood that the gas introduced into the chamber 10 may have some dust components, which may stay on the surface of the palladium tube bundle 30 to reduce the effective contact area of the palladium tube bundle 30 with the gas, and some dust components may be toxic to the palladium tube bundle 30, so that the gas entering into the chamber 10 may be filtered by means of the filter member 100. One skilled in the art can select an appropriate filter element 100 based on the type of dust component that may be encountered during actual use, without limitation. Preferably, the filter element 100 is required to complete the filtration before the gas contacts the palladium tube bundle 30, for example, in the embodiment of fig. 2, the filter element 100 is disposed at the opening of the flow guide member 90 near the second end of the chamber 10.
In some embodiments, it is understood that a radioactive environment exists in the inner cavity 10, and a gas leakage in the inner cavity 10 may possibly cause a safety accident, and for this reason, referring to fig. 3, the hydrogen isotope purification apparatus may be provided with a protective case 110, and the cavity 10 may be provided in the protective case 110. The protective case 110 may be made of a radioactive shielding material, thereby preventing leakage of radioactivity inside the cavity 10 and ensuring safety in operation. The cavity 10 itself can also be made of a radioactive shielding material, and the cavity 10 and the protective shell 110 can form double protection, thereby further improving the safety of operation.
In some embodiments, a protection chamber 120 may be formed between the chamber 10 and the protective case 110, and the protection chamber 120 may be in a vacuum state in an operating state of the hydrogen isotope purification apparatus, so that heat in the inner chamber 10 can be prevented from being emitted to the outside. In order to better maintain the vacuum state of the protection chamber 120, a sealing process between the chamber body 10 and the protection chamber 120 is required.
In some embodiments, a line may be provided on the protective shell 110, through which the protective cavity 120 may be vacuumed. In some embodiments, after the hydrogen isotope purification apparatus is finished operating, inert gas may be melted into the protection chamber 120 to cool the chamber 10 and the components inside the chamber.
In some embodiments, a heat shield 140 may be further disposed in the protection chamber 120, and the heat shield 140 may further prevent heat loss from the inner chamber 10 of the hydrogen isotope purification apparatus.
It should be understood that the above-described embodiments are illustrative and should not be construed as limiting the present application, and that those skilled in the art may make variations, modifications, substitutions and alterations to the above-described embodiments without departing from the scope of the present application.
Claims (14)
1. A hydrogen isotope purification apparatus comprising:
a cavity;
the air inlet pipeline is communicated with the cavity and is used for introducing gas into the cavity;
the palladium tube bundle is arranged in the cavity, one end of the tube cavity of the palladium tube bundle is closed, and the other end of the tube cavity of the palladium tube bundle is communicated with the outside of the cavity;
the first gas outlet pipeline is communicated with the cavity and is used for leading out gas in the cavity;
the heating element is connected with the cavity and used for heating the palladium tube bundle so that hydrogen isotopes in the gas introduced into the cavity can permeate into the tube cavity of the palladium tube bundle.
2. The apparatus of claim 1, wherein the heating element is disposed on a side wall of the chamber, the side wall being a wall extending in the same direction as the palladium tube bundle.
3. The apparatus of claim 2, wherein the heating element comprises a resistance heating wire wound around the sidewall.
4. A device according to claim 2 or 3, wherein the side wall is provided with a temperature uniforming body in which the heating element is provided.
5. The apparatus of claim 1, further comprising:
the temperature measuring part is arranged in the cavity and used for monitoring the temperature in the cavity.
6. The device of claim 1, wherein the palladium tube bundle comprises a plurality of palladium tubes extending in the same direction, the device further comprising a gas collection chamber and a second gas outlet line, the gas collection chamber is sealingly disposed within the cavity, one end of the tube cavity of each of the palladium tubes is in communication with the gas collection chamber, the other end is closed, the second gas outlet line is in communication with the gas collection chamber, and the second gas outlet line communicates the gas collection chamber with the outside of the cavity.
7. The apparatus of claim 6, wherein the inlet conduit, the first outlet conduit, and the second outlet conduit are sealingly connected to the first end of the cavity.
8. The apparatus of claim 7, further comprising: an electrical wiring member sealingly connected to a second end of the cavity, the second end being opposite the first end.
9. The apparatus of claim 7, further comprising:
the flow guide piece is arranged in the cavity and used for guiding the gas in the cavity to flow from the closed end of the palladium tube bundle to the end, communicated with the outside of the cavity, of the palladium tube bundle.
10. The apparatus of claim 9, wherein the flow guide is a cylindrical structure disposed outside the palladium tube bundle, and wherein the flow guide, the palladium tube bundle, and the cavity are coaxial.
11. The apparatus of claim 1, further comprising:
and the filtering piece is arranged in the cavity and filters the gas entering the cavity.
12. The apparatus of claim 1, further comprising:
a protective case, the cavity disposed in the protective case.
13. The device of claim 12, wherein the cavity and the protective shell form a protective cavity therebetween.
14. The apparatus of claim 13, further comprising: a heat shield disposed in the protection cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211011009.3A CN115340068A (en) | 2022-08-23 | 2022-08-23 | Hydrogen isotope purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211011009.3A CN115340068A (en) | 2022-08-23 | 2022-08-23 | Hydrogen isotope purification device |
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| Publication Number | Publication Date |
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| CN115340068A true CN115340068A (en) | 2022-11-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211011009.3A Pending CN115340068A (en) | 2022-08-23 | 2022-08-23 | Hydrogen isotope purification device |
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Citations (6)
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| JPS62128903A (en) * | 1985-11-27 | 1987-06-11 | Tadahiro Omi | Ultrahigh-purity hydrogen permeable cell |
| JP2004149332A (en) * | 2002-10-29 | 2004-05-27 | Tokyo Gas Co Ltd | Hydrogen production system |
| CN104785074A (en) * | 2014-01-16 | 2015-07-22 | 日本派欧尼株式会社 | Palladium alloy membrane unit, storage structure thereof, and method of purifying hydrogen by using the same |
| CN105169896A (en) * | 2015-09-06 | 2015-12-23 | 中国船舶重工集团公司第七一二研究所 | Tube bundle palladium or palladium alloy membrane purifier and making method thereof |
| CN105967145A (en) * | 2016-05-09 | 2016-09-28 | 中国船舶重工集团公司第七〇二研究所 | Purifier with palladium/palladium alloy membrane and usage method thereof |
| CN213193140U (en) * | 2020-07-29 | 2021-05-14 | 苏州高迈新能源有限公司 | Purifier |
-
2022
- 2022-08-23 CN CN202211011009.3A patent/CN115340068A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62128903A (en) * | 1985-11-27 | 1987-06-11 | Tadahiro Omi | Ultrahigh-purity hydrogen permeable cell |
| JP2004149332A (en) * | 2002-10-29 | 2004-05-27 | Tokyo Gas Co Ltd | Hydrogen production system |
| CN104785074A (en) * | 2014-01-16 | 2015-07-22 | 日本派欧尼株式会社 | Palladium alloy membrane unit, storage structure thereof, and method of purifying hydrogen by using the same |
| CN105169896A (en) * | 2015-09-06 | 2015-12-23 | 中国船舶重工集团公司第七一二研究所 | Tube bundle palladium or palladium alloy membrane purifier and making method thereof |
| CN105967145A (en) * | 2016-05-09 | 2016-09-28 | 中国船舶重工集团公司第七〇二研究所 | Purifier with palladium/palladium alloy membrane and usage method thereof |
| CN213193140U (en) * | 2020-07-29 | 2021-05-14 | 苏州高迈新能源有限公司 | Purifier |
Non-Patent Citations (1)
| Title |
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| 王常珍: "《冶金物理化学研究方法（第4版）》", 冶金工业出版社, pages: 23 - 24 * |
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