CN115029563B - High-temperature heat pipe alkali metal working medium rectifying and purifying device and method - Google Patents
High-temperature heat pipe alkali metal working medium rectifying and purifying device and method Download PDFInfo
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- CN115029563B CN115029563B CN202210660057.9A CN202210660057A CN115029563B CN 115029563 B CN115029563 B CN 115029563B CN 202210660057 A CN202210660057 A CN 202210660057A CN 115029563 B CN115029563 B CN 115029563B
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- 229910052783 alkali metal Inorganic materials 0.000 title claims abstract description 75
- 150000001340 alkali metals Chemical class 0.000 title claims abstract description 73
- 238000005555 metalworking Methods 0.000 title claims abstract description 57
- 238000000034 method Methods 0.000 title claims abstract description 14
- 238000002844 melting Methods 0.000 claims abstract description 60
- 230000008018 melting Effects 0.000 claims abstract description 60
- 238000010438 heat treatment Methods 0.000 claims abstract description 55
- 238000003860 storage Methods 0.000 claims abstract description 49
- 239000007788 liquid Substances 0.000 claims abstract description 40
- 239000011261 inert gas Substances 0.000 claims abstract description 26
- 238000001816 cooling Methods 0.000 claims abstract description 21
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 5
- 239000010959 steel Substances 0.000 claims abstract description 5
- 239000012535 impurity Substances 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 9
- 238000010926 purge Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical group [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 5
- 229910052700 potassium Inorganic materials 0.000 claims description 5
- 239000011591 potassium Substances 0.000 claims description 5
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 3
- 239000007789 gas Substances 0.000 claims description 3
- 229910052744 lithium Inorganic materials 0.000 claims description 3
- 239000001301 oxygen Substances 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000000746 purification Methods 0.000 claims description 3
- 238000005057 refrigeration Methods 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 238000009835 boiling Methods 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B26/00—Obtaining alkali, alkaline earth metals or magnesium
- C22B26/10—Obtaining alkali metals
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B26/00—Obtaining alkali, alkaline earth metals or magnesium
- C22B26/10—Obtaining alkali metals
- C22B26/12—Obtaining lithium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/02—Refining by liquating, filtering, centrifuging, distilling, or supersonic wave action including acoustic waves
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B9/00—General processes of refining or remelting of metals; Apparatus for electroslag or arc remelting of metals
- C22B9/04—Refining by applying a vacuum
-
- 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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Acoustics & Sound (AREA)
- Physics & Mathematics (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to a high-temperature heat pipe alkali metal working medium rectifying and purifying device and a method, wherein the device comprises a vacuum unit, a working medium rectifying tank, a working medium rectifying and heating device, a working medium melting tank heating device, a working medium storage tank heating device, an inert gas steel cylinder, a glove box, a condenser, a cooling device and the like; heating and melting the alkali metal working medium in a working medium melting tank, entering a working medium rectifying tank through a connecting pipe III, carrying out vacuum rectification on the liquid alkali metal working medium in the working medium rectifying tank, and entering a working medium storage tank through a connecting pipe II to cool the generated alkali metal vapor into high-purity liquid alkali metal; the vacuum unit maintains the vacuum degree of the device. The device has the advantages that no valve is arranged in the high-temperature area of the working medium flow pipeline, so that the leakage rate of the device is greatly reduced, and the safety and reliability of the working medium rectification process are ensured.
Description
Technical Field
The invention belongs to the technical field of high-temperature heat pipes, and particularly relates to a rectification and purification device and method for an alkali metal working medium of a high-temperature heat pipe.
Background
The heat pipe transfers heat through the phase change of the working medium, and has the characteristics of good heat conductivity, ideal isothermicity, adjustability of heat flow density, reversibility of heat transfer direction, adaptability to various external requirements, simple structure, reliable operation, no external auxiliary power equipment and the like. The heat pipe may be designed to meet various different requirements of heat transfer devices, thermostatic devices, temperature switches, thermal diodes, etc. by utilizing one or more characteristics of the heat pipe. The invention provides a device and a method for rectifying and purifying an alkali metal working medium of a high-temperature heat pipe, which solve the problem of impure alkali metal working medium in the process of manufacturing the high-temperature heat pipe.
Disclosure of Invention
According to the invention, no valve is arranged in the high-temperature region of the working medium flow pipeline, so that the leakage rate of the device is greatly reduced, and the safety and reliability of the working medium rectification process are ensured.
In order to achieve the above purpose, the present invention adopts the following technical scheme: the high-temperature heat pipe alkali metal working medium rectifying and purifying device comprises a vacuum unit 1, a pressure gauge 2, a first connecting pipe 3, a working medium storage tank expansion section 4, an inert gas steel cylinder 5, a condenser 6, a cooling device 7, a working medium melting tank 8, a third connecting pipe 9, a second connecting pipe 10, a working medium rectifying tank 11, a working medium rectifying and heating device 12, a working medium melting tank heating device 13, a working medium storage tank 14, a working medium storage tank heating device 15, a glove box 16, a fourth connecting pipe 17 and a fifth connecting pipe 18; the outlet of the vacuum unit 1 is provided with a pressure gauge 2; the outlet of the vacuum unit 1 is divided into two paths, one path is connected with the expansion section 4 of the working medium storage tank through a valve F1, and the other path is connected with the top of the condenser 6 through a connecting pipe I3 and a valve F3; the condenser 6 is connected with an inlet of the working medium melting tank 8 through a connecting pipe five 18, the working medium melting tank 8 is provided with a working medium melting tank heating device 13, and the top of the working medium melting tank 8 is connected with the connecting pipe five 18 by a clamp for convenient opening; the bottom of the working medium melting tank 8 is connected with the top of a working medium rectifying tank 11 through a connecting pipe III 9, and the working medium rectifying tank 11 is provided with a working medium rectifying tank heating device 12; an outlet at the upper part of the working medium rectifying tank 11 is connected with a working medium storage tank 14 through a second connecting pipe 10, and the working medium storage tank is provided with a working medium storage tank heating device 15; the bottom of the working medium storage tank 14 enters the glove box 16 through a connecting pipe IV 17, and a valve F9 is arranged on the connecting pipe IV 17 in the glove box 16.
The high-temperature heat pipe alkali metal working medium rectifying and purifying device is characterized in that a heating device is arranged on the periphery of the second connecting pipe, the third connecting pipe, the fourth connecting pipe and the valve F9.
The high-temperature heat pipe alkali metal working medium rectifying and purifying device is characterized in that a cooling device is arranged on the periphery of an expansion section of a working medium storage tank, the cooling mode of the cooling device is water coil cooling or air cooling, and an inert gas inlet is arranged on the expansion section of the working medium storage tank and is controlled through a valve F2.
The high-temperature heat pipe alkali metal working medium rectifying and purifying device is characterized in that a tee joint is arranged in the middle of a working medium melting tank, one path of the tee joint is provided with an inert gas inlet which is controlled by a valve F5, and the other path of the tee joint is provided with an exhaust port which is controlled by a valve F6.
The high-temperature heat pipe alkali metal working medium rectifying and purifying device is characterized in that an impurity outlet is arranged at the bottom end of a working medium melting tank and is controlled by a valve F7, and an impurity outlet is arranged at the bottom end of a working medium rectifying tank and is controlled by a valve F8.
The high-temperature heat pipe alkali metal working medium rectifying and purifying device is characterized in that the depth of a connecting pipe three inserted into a working medium rectifying tank exceeds the outlet of the working medium rectifying tank by 5-10 cm.
The high-temperature heat pipe alkali metal working medium rectifying and purifying device is characterized in that an alkali metal upper limit liquid level sensor 19 and an alkali metal lower limit liquid level sensor 20 are respectively arranged in a working medium melting tank, a working medium rectifying tank and a working medium storage tank, and the liquid level sensors can be temperature sensors or capacitive liquid level sensors.
The high-temperature heat pipe alkali metal working medium rectifying and purifying device is characterized in that the alkali metal working medium is potassium, sodium or lithium.
The high-temperature heat pipe alkali metal working medium rectifying and purifying device is characterized in that inert gas entering a glove box is dried by a dryer, the water content in the glove box is less than 1PPm, and the oxygen content is less than 1PPm.
The method for rectifying and purifying the alkali metal working medium of the high-temperature heat pipe comprises the following steps:
(1) Purging system inert gas: opening a valve F2 inert gas inlet system, and opening a valve F4 and a valve F6 gas outlet system;
(2) Placing an alkali metal working medium: opening a clamp at the top of the working medium melting tank in a system inert gas purging state to place solid alkali metal into the working medium melting tank, and closing the clamp at the top of the working medium melting tank after the working medium is placed;
(8) Opening a vacuum unit to vacuumize the system: sequentially closing a valve F6, a valve F4 and a valve F2 to stop system purging, closing a valve F1 to open a valve F3, and then opening a vacuum unit to vacuumize the system;
(4) Melting the working medium to remove white oil impurities in the working medium: when the vacuum degree of the system is more than 6Pa, a working medium melting tank heating device is turned on, the temperature is set to be 200-300 ℃, and the heating time is 30-120 min;
(5) The working medium enters a rectifying tank: opening a working medium rectifying tank heating device and a connecting pipe three peripheral heating device, setting the temperature to be 200-300 ℃, closing a valve F3, opening a valve F4 and a valve F5, pressing liquid alkali metal working medium into the working medium rectifying tank by inert gas, observing liquid level sensors of a working medium melting tank and the working medium rectifying tank to alarm, wherein the liquid level of the working medium rectifying tank does not exceed an upper limit liquid level, and sequentially closing the valve F5 and the valve F4 when the liquid level of the working medium rectifying tank does not exceed a lower limit liquid level of the alkali metal in the working medium melting tank;
(6) And (3) working medium rectification: opening a valve F1 to vacuumize the system, opening refrigeration of a cold area device, opening a working medium storage tank heating device and a connecting pipe peripheral heating device, setting the temperature to be 200-300 ℃, improving the heating temperature of a working medium rectifying tank, and setting the temperature according to the boiling point of alkali metal; stopping working medium rectification when the upper limit of the liquid level of the working medium storage tank is alarmed or the lower limit of the liquid level of the working medium rectification tank is alarmed, closing the heating device of the rectification tank, and closing the vacuum unit;
(7) And (3) working medium storage: opening the four peripheral heating devices of the connecting pipes, setting the temperature to be 20-100 ℃ higher than the melting point of the alkali metal working medium, opening the valve F2 and the valve F9, and putting the alkali metal working medium into a quantitative container or directly filling the alkali metal working medium into the heat pipe.
The invention has the advantages that:
1. According to the invention, a valve is not arranged in a high-temperature region of the working medium flow pipeline, so that the leakage rate of the device is greatly reduced, and the safety and reliability of the working medium rectification process are ensured;
2. according to the invention, the system is vacuumized in the alkali metal working medium melting stage, so that volatile impurities such as white oil in the alkali metal working medium can be pumped into the condensing tank, and the subsequent working medium rectifying tank, working medium storage tank and pipelines are not polluted;
3. According to the invention, the liquid level alarm is arranged in the working medium melting tank, the working medium rectifying tank and the working medium storage tank, so that the production is guided more effectively, and the production safety is ensured.
Drawings
FIG. 1 is a schematic diagram of a device and a method for rectifying and purifying alkali metal working medium of a high-temperature heat pipe.
In the figure, a vacuum unit, a 2-manometer, a 3-connecting pipe I, a 4-working medium storage tank expansion section, a 5-inert gas steel cylinder, a 6-condenser, a 7-cooling device, an 8-working medium melting tank, a 9-connecting pipe III, a 10-connecting pipe II, a 11-dry rectifying tank, a 12-two working medium rectifying and heating device, a 13-working medium melting tank heating device, a 14-working medium storage tank, a 15-working medium storage tank heating device, a 16-glove box, a 17-connecting pipe IV, a 18-connecting pipe V, a 19-alkali metal upper limit liquid level sensor and a 20-alkali metal lower limit liquid level sensor are arranged.
Detailed Description
In order that the technical spirit and advantageous effects of the present invention may be more clearly understood, a detailed description of specific embodiments of the present invention will be given below with reference to the accompanying drawings.
Referring to fig. 1, the high-temperature heat pipe alkali metal working medium rectifying and purifying device comprises a vacuum unit 1, a pressure gauge 2, a first connecting pipe 3, a working medium storage tank expansion section 4, an inert gas steel cylinder 5, a condenser 6, a cooling device 7, a working medium melting tank 8, a third connecting pipe 9, a second connecting pipe 10, a working medium rectifying tank 11, a working medium rectifying and heating device 12, a working medium melting tank heating device 13, a working medium storage tank 14, a working medium storage tank heating device 15, a glove box 16, a fourth connecting pipe 17 and a fifth connecting pipe 18; the outlet of the vacuum unit 1 is provided with a pressure gauge 2; the outlet of the vacuum unit 1 is divided into two paths, one path is connected with the expansion section 4 of the working medium storage tank through a valve F1, and the other path is connected with the top of the condenser 6 through a connecting pipe I3 and a valve F3; the condenser 6 is connected with an inlet of the working medium melting tank 8 through a connecting pipe five 18, the working medium melting tank 8 is provided with a working medium melting tank heating device 13, and the top of the working medium melting tank 8 is connected with the connecting pipe five 18 by a clamp for convenient opening; the bottom of the working medium melting tank 8 is connected with the top of a working medium rectifying tank 11 through a connecting pipe III 9, and the working medium rectifying tank 11 is provided with a working medium rectifying tank heating device 12; an outlet at the upper part of the working medium rectifying tank 11 is connected with a working medium storage tank 14 through a second connecting pipe 10, and the working medium storage tank is provided with a working medium storage tank heating device 15; the bottom of the working medium storage tank 14 enters the glove box 16 through a connecting pipe IV 17, and a valve F9 is arranged on the connecting pipe IV 17 in the glove box 16.
The high-temperature heat pipe alkali metal working medium rectifying and purifying device is characterized in that a heating device is arranged on the periphery of a second connecting pipe 10, a third connecting pipe 9, a fourth connecting pipe 17 and a valve F9.
The high-temperature heat pipe alkali metal working medium rectifying and purifying device is characterized in that a cooling device 7 is arranged on the periphery of the working medium storage tank expansion section 4, the cooling mode of the cooling device 7 is water pipe cooling or air cooling, and an inert gas inlet is arranged on the working medium storage tank expansion section 4 and is controlled through a valve F2.
The high-temperature heat pipe alkali metal working medium rectifying and purifying device is characterized in that a tee joint is arranged in the middle of a working medium melting tank 8, one path of the tee joint is provided with an inert gas inlet which is controlled by a valve F5, and the other path of the tee joint is provided with an exhaust port which is controlled by a valve F6.
The high-temperature heat pipe alkali metal working medium rectifying and purifying device is characterized in that an impurity outlet is arranged at the bottom end of a working medium melting tank 8 and is controlled by a valve F7, and an impurity outlet is arranged at the bottom end of the working medium rectifying tank 8 and is controlled by a valve F8.
The high-temperature heat pipe alkali metal working medium rectifying and purifying device is characterized in that the depth of a connecting pipe III 8 inserted into the working medium rectifying tank 11 exceeds the outlet of the working medium rectifying tank 11 by 5-10 cm.
The high-temperature heat pipe alkali metal working medium rectifying and purifying device is characterized in that an alkali metal upper limit liquid level sensor 19 and an alkali metal lower limit liquid level sensor 20 are respectively arranged in a working medium melting tank 8, a working medium rectifying tank 11 and a working medium storage tank 14, and the liquid level sensors can be temperature sensors or capacitive liquid level sensors.
The high-temperature heat pipe alkali metal working medium rectifying and purifying device is characterized in that the alkali metal working medium is potassium, sodium or lithium.
The high-temperature heat pipe alkali metal working medium rectifying and purifying device is characterized in that inert gas entering a glove box 16 is dried by a dryer, the water content in the glove box is less than 1PPm, and the oxygen content is less than 1PPm.
To illustrate the feasibility of the method of the invention, rectification of potassium working medium is used as an example:
A rectification and purification method of high-temperature heat pipe potassium working medium comprises the following steps:
(1) Purging system inert gas: opening a valve F2 inert gas inlet system, and opening a valve F4 and a valve F6 gas outlet system;
(2) Placing an alkali metal working medium: opening a clamp at the top of the working medium melting tank 8 in a system inert gas purging state to place solid alkali metal into the working medium melting tank 8, and closing the clamp at the top of the working medium melting tank 8 after the working medium is placed;
(3) Opening the vacuum unit 1 to vacuumize the system: sequentially closing a valve F6, a valve F4 and a valve F2 to stop system purging, closing a valve F1 to open a valve F3, and then opening a vacuum unit 1 to vacuumize the system;
(4) Melting the working medium to remove white oil impurities in the working medium: when the vacuum degree of the system is more than 6Pa, the working medium melting tank heating device 13 is turned on, the temperature is set to 260 ℃, and the heating time is 60 minutes;
(5) The working medium enters a working medium rectifying tank: opening a working medium rectifying tank heating device 12 and a connecting pipe three 9 peripheral heating device, setting the temperature at 200 ℃, closing a valve F3, opening a valve F4 and a valve F5, pressing liquid alkali metal working medium into a working medium rectifying tank 11 by inert gas, observing liquid level sensors of the working medium melting tank 8 and the working medium rectifying tank 11 to give an alarm, and sequentially closing the valve F5 and the valve F4 when the liquid level of the working medium rectifying tank 11 does not exceed an upper limit liquid level and the liquid level of the alkali metal in the working medium melting tank is given an alarm;
(6) And (3) working medium rectification: opening a valve F1 to vacuumize the system, opening refrigeration of a cooling device 7, opening a working medium storage tank heating device 15 and a connecting pipe two 10 peripheral heating device, setting the temperature to 200 ℃, improving the heating temperature of a working medium rectifying tank 11, and setting the temperature to 600 ℃; stopping working medium rectification when the upper limit of the liquid level of the working medium storage tank 14 is alarmed or the lower limit of the liquid level of the working medium rectification tank is alarmed, closing the rectification tank heating device 12, and closing the vacuum unit 1;
(7) And (3) working medium storage: opening the four 17 peripheral heating devices of the connecting pipe, setting the temperature to 120 ℃, opening the valve F2 and the valve F9, and putting the alkali metal working medium into a quantitative container or directly filling the alkali metal working medium into the heat pipe.
It is to be understood that the above description is not intended to limit the invention, and that the invention is not limited to the examples described above, but rather that variations within the spirit and scope of the invention can be made by those skilled in the art.
Claims (10)
1. The utility model provides a high temperature heat pipe alkali metal working medium rectification purification device which characterized in that: the device comprises a vacuum unit 1, a pressure gauge 2, a first connecting pipe 3, a working medium storage tank expansion section 4, an inert gas steel cylinder 5, a condenser 6, a cooling device 7, a working medium melting tank 8, a third connecting pipe 9, a second connecting pipe 10, a working medium rectifying tank 11, a working medium rectifying heating device 12, a working medium melting tank heating device 13, a working medium storage tank 14, a working medium storage tank heating device 15, a glove box 16, a fourth connecting pipe 17 and a fifth connecting pipe 18; the outlet of the vacuum unit 1 is provided with a pressure gauge 2; the outlet of the vacuum unit 1 is divided into two paths, one path is connected with the expansion section 4 of the working medium storage tank through a valve F1, and the other path is connected with the top of the condenser 6 through a connecting pipe I3 and a valve F3; the condenser 6 is connected with an inlet of the working medium melting tank 8 through a connecting pipe five 18, the working medium melting tank 8 is provided with a working medium melting tank heating device 13, and the top of the working medium melting tank 8 is connected with the connecting pipe five 18 by a clamp for convenient opening; the bottom of the working medium melting tank 8 is connected with the top of a working medium rectifying tank 11 through a connecting pipe III 9, and the working medium rectifying tank 11 is provided with a working medium rectifying tank heating device 12; an outlet at the upper part of the working medium rectifying tank 11 is connected with a working medium storage tank 14 through a second connecting pipe 10, and the working medium storage tank is provided with a working medium storage tank heating device 15; the bottom of the working medium storage tank 14 enters the glove box 16 through a connecting pipe IV 17, and a valve F9 is arranged on the connecting pipe IV 17 in the glove box 16.
2. The high-temperature heat pipe alkali metal working medium rectifying and purifying device according to claim 1, wherein the periphery of the connecting pipe II, the connecting pipe III, the connecting pipe IV and the valve F9 is provided with a heating device.
3. The device for rectifying and purifying the alkali metal working medium of the high-temperature heat pipe according to claim 2, wherein a cooling device is arranged at the periphery of the expansion section of the working medium storage tank, the cooling mode of the cooling device is water coil cooling or air cooling, and the expansion section of the working medium storage tank is provided with an inert gas inlet which is controlled by a valve F2.
4. The high-temperature heat pipe alkali metal working medium rectifying and purifying device according to claim 3, wherein a tee joint is arranged in the middle of the working medium melting tank, one path of the tee joint is provided with an inert gas inlet which is controlled by a valve F5, and the other path of the tee joint is provided with an exhaust port which is controlled by a valve F6.
5. The high-temperature heat pipe alkali metal working medium rectifying and purifying device according to claim 4, wherein an impurity outlet is arranged at the bottom end of the working medium melting tank and is controlled by a valve F7, and an impurity outlet is arranged at the bottom end of the working medium rectifying tank and is controlled by a valve F8.
6. The high-temperature heat pipe alkali metal working medium rectifying and purifying device according to claim 5, wherein the depth of the connecting pipe three inserted into the working medium rectifying tank exceeds the outlet of the working medium rectifying tank by 5-10 cm.
7. The device for rectifying and purifying an alkali metal working medium of a high-temperature heat pipe according to claim 6, wherein an alkali metal upper limit liquid level sensor 19 and an alkali metal lower limit liquid level sensor 20 are respectively arranged in the working medium melting tank, the working medium rectifying tank and the working medium storage tank, and the liquid level sensors are temperature sensors or capacitive liquid level sensors.
8. The device for rectifying and purifying the alkali metal working medium of the high-temperature heat pipe according to claim 7, wherein the alkali metal working medium is potassium, sodium or lithium.
9. The high-temperature heat pipe alkali metal working medium rectifying and purifying device according to claim 8, wherein inert gas entering a glove box is dried by a dryer, the water content in the glove box is less than 1PPm, and the oxygen content is less than 1PPm.
10. A method for purifying a high-temperature heat pipe alkali metal working medium rectifying device according to claim 9, characterized in that:
(1) Purging system inert gas: opening a valve F2 inert gas inlet system, and opening a valve F4 and a valve F6 gas outlet system;
(2) Placing an alkali metal working medium: opening a clamp at the top of the working medium melting tank in a system inert gas purging state to place solid alkali metal into the working medium melting tank, and closing the clamp at the top of the working medium melting tank after the working medium is placed;
(3) Opening a vacuum unit to vacuumize the system: sequentially closing a valve F6, a valve F4 and a valve F2 to stop system purging, closing a valve F1 to open a valve F3, and then opening a vacuum unit to vacuumize the system;
(4) Melting the working medium to remove white oil impurities in the working medium: when the vacuum degree of the system is more than 6Pa, a working medium melting tank heating device is turned on, the temperature is set to be 200-300 ℃, and the heating time is 30-120 min;
(5) The working medium enters a rectifying tank: opening a working medium rectifying tank heating device and a connecting pipe three peripheral heating device, setting the temperature to be 200-300 ℃, closing a valve F3, opening a valve F4 and a valve F5, pressing liquid alkali metal working medium into the working medium rectifying tank by inert gas, observing liquid level sensors of a working medium melting tank and the working medium rectifying tank to alarm, wherein the liquid level of the working medium rectifying tank does not exceed an upper limit liquid level, and sequentially closing the valve F5 and the valve F4 when the liquid level of the working medium rectifying tank does not exceed a lower limit liquid level of the alkali metal in the working medium melting tank;
(6) And (3) working medium rectification: opening a valve F1 to vacuumize the system, opening refrigeration of a cold area device, opening a working medium storage tank heating device and a connecting pipe peripheral heating device, setting the temperature to be 200-300 ℃, improving the heating temperature of a working medium rectifying tank, and setting the temperature according to the boiling point of alkali metal; stopping working medium rectification when the upper limit of the liquid level of the working medium storage tank is alarmed or the lower limit of the liquid level of the working medium rectification tank is alarmed, closing the heating device of the rectification tank, and closing the vacuum unit;
(7) And (3) working medium storage: opening the four peripheral heating devices of the connecting pipes, setting the temperature to be 20-100 ℃ higher than the melting point of the alkali metal working medium, opening the valve F2 and the valve F9, and putting the alkali metal working medium into a quantitative container or directly filling the alkali metal working medium into the heat pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210660057.9A CN115029563B (en) | 2022-05-08 | 2022-05-08 | High-temperature heat pipe alkali metal working medium rectifying and purifying device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210660057.9A CN115029563B (en) | 2022-05-08 | 2022-05-08 | High-temperature heat pipe alkali metal working medium rectifying and purifying device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115029563A CN115029563A (en) | 2022-09-09 |
| CN115029563B true CN115029563B (en) | 2024-05-17 |
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Family Applications (1)
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| CN202210660057.9A Active CN115029563B (en) | 2022-05-08 | 2022-05-08 | High-temperature heat pipe alkali metal working medium rectifying and purifying device and method |
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| CN212770903U (en) * | 2020-07-16 | 2021-03-23 | 北京微焓科技有限公司 | Alkali metal heat pipe working medium purification and filling system |
| CN114318007A (en) * | 2022-01-12 | 2022-04-12 | 中国科学院电工研究所 | Method for purifying alkali metal and alkaline earth metal |
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