Method and device for micro-fluidic centrifugal separation of hydrogen and deuterium

Abstract

The invention discloses a method and a device for micro-fluidic centrifugal separation of hydrogen and deuterium. The device comprises a rotor, a shell, a bearing, a motor, an adsorption material, a discharge port, an air inlet and an air outlet. A housing surrounds the rotor, provides mechanical support and seal, and a gas flow path is generally designed within the housing to export the separated gas. According to the device, hydrogen deuterium and deuterium gas are separated through centrifugal force, the deuterium gas is adsorbed and collected on the inner wall of the gas centrifugal machine through an adsorption material, deuterium gas collection can be achieved through decompression extraction without disassembling equipment, pure deuterium gas can be collected at a discharging port of the gas centrifugal machine, and pure hydrogen deuterium can be output at a gas outlet of the gas centrifugal machine. The method adopts step-by-step separation, the effect is remarkable, and the purity of the output deuterium gas is high. Compared with a traditional method for separating hydrogen, deuterium and deuterium gas, which is complex in process and various in equipment, the method has the advantages of being simple in design, high in operability, low in safety risk, low in production cost, capable of avoiding resource waste and wide in industrial application prospect.

Description

Technical Field

[0001] The invention belongs to the field of isotope technology, and in particular relates to a method and a device for separating hydrogen and deuterium by microfluidic centrifugation. Background Art

[0002] Deuterium, an isotope of hydrogen, is a potential fuel for controlled nuclear fusion and is also widely used in semiconductors, optical fiber materials, special light sources, medical testing, chemical tracers, and pharmaceuticals. However, the concentration of deuterium in nature is very low.

[0003] The main method for preparing deuterium gas in industry is the electrolysis of heavy water. The products of the cathode of the electrolysis of heavy water are mainly deuterium gas, hydrogen deuterium and hydrogen. When the hydrogen atomic content in the cathode gas is 1%, the molar fraction of deuterium gas is 98.0228%, and the molar fraction of hydrogen deuterium is 1.976%. The molar ratio of hydrogen molecules is only 0.012%, and most of the impurity hydrogen in the gas phase exists in a mixed state of hydrogen and deuterium. Usually, high-purity and high-concentration deuterium is obtained by separating the 'hydrogen-deuterium' mixed gas. There are several main methods for separating deuterium: thermal diffusion method, gas concentration method, and electrolysis method. The process of thermal diffusion method is relatively complicated, and requires strict control of temperature and pressure conditions. It also requires a large amount of heat energy to achieve the separation between deuterium and hydrogen, which consumes a lot of energy. The gas concentration method has high requirements on the purity of the starting material, and the separation efficiency is greatly affected by the gas pressure. The electrolysis method consumes a lot of electricity to achieve the electrochemical separation of deuterium and hydrogen, and impurities have a great impact on the electrolysis efficiency, and the price is high. The current limitations of deuterium gas separation technology have led to the development of energy-saving, high-efficiency, and simple process technologies. Based on the different characteristics of the relative molecular mass of deuterium and ordinary hydrogen. There is a proton and a neutron in the deuterium nucleus, and the relative molecular mass is 4; while there is only one proton in the ordinary hydrogen nucleus, and the relative molecular mass is 2. This characteristic can be used to separate deuterium gas from hydrogen-deuterium mixed gas. Summary of the invention

[0004] In order to solve the problems of complex, high energy consumption, low efficiency and high price of existing separation technology of hydrogen deuterium and deuterium gas, the present application provides a method and device for microfluidic centrifugal separation of hydrogen deuterium.

[0005] To achieve the above-mentioned purpose, in the first aspect, the present invention provides a device for centrifugal separation of hydrogen and deuterium by microfluidics, which adopts the following technical scheme: a device for centrifugal separation of hydrogen and deuterium by microfluidics, comprising a rotor, a housing, a bearing, a motor, an adsorbent material, a discharge port, an air inlet and an air outlet. The cathode product (deuterium gas containing hydrogen and deuterium) of the electrolysis of heavy water enters the rotor cavity through the air inlet, and the rotor is driven by the motor to rotate at a high speed. When the rotor rotates at a high speed, a strong centrifugal force field is generated, and the mixed gas is thrown outward radially under the action of the centrifugal force, and the heavier molecules (deuterium gas molecules) will move to the outer edge of the rotor under the action of the centrifugal force, while the lighter molecules (hydrogen and deuterium molecules) will stay near the center of the rotor. The gas flows along the set path, and the deuterium molecules slide along the rotor wall to the bottom of the rotor cavity and are discharged through the discharge pipe; a part of the undischarged mixed gas is enriched in the middle of the rotor cavity, and the deuterium in the mixed gas is adsorbed and collected by the adsorption material on the inner wall of the middle of the rotor cavity; the remaining hydrogen and deuterium molecules, due to the combined effect of centrifugal force and pressure difference, move upward along the axis in an orderly manner and are finally discharged from the top outlet.

[0006] The present invention discloses a device for separating hydrogen and deuterium by microfluidic centrifugation. The rotor is the core component of a gas centrifuge, which is usually cylindrical or cannulated, made of high-strength, corrosion-resistant materials, and is precisely processed and balanced to ensure its stability and durability when rotating at high speed. The minimum rotation speed of the rotor for separating deuterium gas and hydrogen-deuterium mixed gas is 40,000 rpm.

[0007] The present invention discloses a device for centrifugal separation of hydrogen and deuterium by microfluidics, wherein the housing surrounds the rotor, provides mechanical support and sealing, and prevents gas leakage. A gas flow path is usually designed in the housing to guide the separated gas out. The present invention discloses a device for centrifugal separation of hydrogen and deuterium by microfluidics, wherein the bearing is used to support and position the rotor to ensure its smooth operation. Due to the high-speed rotation of the rotor, the bearing needs to have high durability and low friction characteristics, and a magnetic suspension bearing or an air bearing is usually used.

[0008] The present invention discloses a device for separating hydrogen and deuterium by microfluidic centrifugation. The motor is used to drive the rotor to rotate. Meanwhile, the precise speed control, overload protection and overheating protection can ensure the safe and efficient operation of the device.

[0009] The present invention discloses a device for separating hydrogen and deuterium by microfluidic centrifugation. The adsorbent material (metal organic framework material) is located in the middle of the rotor cavity and fits closely with the inner wall, so as to better adsorb deuterium. By adding amino (-NH2) groups to the metal organic framework material UiO-66, a stronger selective adsorption of deuterium can be achieved through polar interaction and weak hydrogen bond formation. At the same time, in the synthesis process of UiO-66, aminoterephthalic acid (NH2-BDC) is used as an organic ligand to form an amino-functionalized MOF, UiO-66-NH2. By changing the ratio of NH2-BDC to Zr ions, the reaction temperature and time, the pore structure of UiO-66 can be adjusted to reach 0.6-0.8nm, and the porosity can reach 50%-70%, so that deuterium molecules can be accommodated and smaller hydrogen and deuterium molecules can be excluded, thereby achieving selective adsorption of deuterium. Compared with other adsorption materials such as activated carbon and molybdenum disulfide, metal organic framework materials usually have extremely high specific surface area, which can provide more adsorption sites, thereby improving adsorption efficiency; metal organic framework materials are usually prepared by simple synthesis methods, and the cost of the raw materials used is relatively low, and they are easy to buy on the market; metal organic framework materials usually have good chemical stability and can operate stably for a long time under various environmental conditions. After the separation is completed, the air inlet is sealed, and the air outlet is connected to a vacuum pump. By reducing the pressure, the pressure in the container is reduced, and the deuterium gas is extracted from the metal framework material, and the pure deuterium gas is output through the outlet.

[0010] The present invention discloses a device for separating hydrogen and deuterium by microfluidic centrifugation. The discharge pipe extends to the bottom of a rotor cavity. During the separation process, deuterium gas is enriched at the bottom of the rotor cavity and is transported to a discharge port through the discharge pipe to collect pure deuterium gas.

[0011] The present invention discloses a device for separating hydrogen and deuterium by microfluidic centrifugation. The outlet pipe extends to the top of a rotor cavity. During the separation process, hydrogen and deuterium are enriched at the top of the rotor cavity and transported to the outlet through the outlet pipe to output pure hydrogen and deuterium.

[0012] The present invention discloses a device for separating hydrogen and deuterium by microfluidic centrifugation. The air inlet pipe extends to the middle of a rotor cavity. During the separation process, deuterium gas mixed with a small amount of hydrogen and deuterium is input into the air inlet and transported to the middle of the rotor cavity through the air inlet pipe.

[0013] The present invention provides a device for separating hydrogen and deuterium by microfluidic centrifugation, wherein the maximum theoretical separation power of the centrifuge in the device is

[0014]

[0015] Where ρ is the density of the mixed gas, D is the mutual diffusion coefficient of the light and heavy components, ΔM, Ω, z, r, R, and T are the average molecular mass of the mixed gas, rotor angular velocity, rotor length, rotor radius, gas constant, and absolute temperature of the gas, respectively.

[0016] Assuming that the centrifuge used to separate hydrogen and deuterium has a rotor speed of 60,000 rpm, a rotor radius of 0.15 m, a rotor length of 0.5 m, a gas constant of 8.314 J / (mol·K), and a gas absolute temperature of 300 K. Substituting into the formula, the separation power is 46.075 SWU / a, which meets the production requirements.

[0017] To achieve the above object, in a second aspect, the present invention provides a method for separating hydrogen and deuterium by microfluidic centrifugation, which adopts the following technical scheme: A method for separating hydrogen and deuterium by microfluidic centrifugation, comprising the following steps:

[0018] S1. Open the air inlet valve and the fan, and introduce unpurified deuterium gas. The fan rotates the blades or impeller to generate airflow, thereby generating an airflow pressure difference to input the mixed gas into the entire pipeline system.

[0019] S2. The mixed gas enters the No. 1 gas centrifuge through the air inlet. The motor drives the rotor to rotate at high speed. The rotor generates a strong centrifugal force field when rotating at high speed. The mixed gas is thrown radially outward under the action of centrifugal force. The heavier molecules (deuterium molecules) will move to the outer edge of the rotor under the action of centrifugal force, while the lighter molecules (hydrogen-deuterium molecules) will stay near the center of the rotor. The gas follows the set flow path, and the deuterium molecules slide along the rotor wall to the bottom of the rotor cavity and are discharged by the discharge pipe; a part of the undischarged mixed gas is enriched in the middle of the rotor cavity, and the deuterium in the mixed gas is adsorbed and collected by the adsorption material (metal organic framework material) on the inner wall of the middle of the rotor cavity; the remaining hydrogen-deuterium molecules, due to the combined action of centrifugal force and pressure difference, move upward in an orderly manner along the axis, and are finally discharged from the top outlet.

[0020] S3. The mixed gas that has been separated once enters the No. 2 gas centrifuge through the air inlet. The motor drives the rotor to rotate at high speed. The rotor generates a strong centrifugal force field when rotating at high speed. The mixed gas is thrown radially outward under the action of centrifugal force. The heavier molecules (deuterium molecules) will move to the outer edge of the rotor under the action of centrifugal force, while the lighter molecules (hydrogen-deuterium molecules) will stay near the center of the rotor. The gas follows the set flow path, and the deuterium molecules slide along the rotor wall to the bottom of the rotor cavity and are discharged by the discharge pipe; a part of the undischarged mixed gas is enriched in the middle of the rotor cavity, and the deuterium in the mixed gas is adsorbed and collected by the adsorption material (metal organic framework material) on the inner wall of the middle of the rotor cavity; the remaining hydrogen-deuterium molecules, due to the combined action of centrifugal force and pressure difference, move upward in an orderly manner along the axis, and are finally discharged from the top outlet.

[0021] S4. Connect multiple gas centrifuges after the No. 2 gas centrifuge and repeat S2 multiple times to separate hydrogen deuterium from deuterium gas. After the separation is completed, the pressure in the container is reduced by decompression to extract the deuterium gas from the metal group, output from the discharge port, and store it in a deuterium storage tank. Finally, pure hydrogen deuterium and deuterium gas are obtained.

[0022] In a specific implementation plan, the gas velocity at the gas inlet is preferably 10 to 25 m / s, and the pressure drop is controlled at 0.5 MPa during separation and 10 when extracting deuterium gas. -3 ~10 -6 Pa.

[0023] Compared with the prior art, the present invention has the following beneficial effects:

[0024] (1) The device of the present invention has a simple structure. The gas centrifuge uses centrifugal force to separate hydrogen deuterium from deuterium gas. The adsorption material (metal organic framework material) is used on the inner wall of the gas centrifuge to adsorb and collect deuterium gas. The deuterium gas can be collected by decompression extraction without disassembling the equipment, thereby achieving efficient collection. Pure deuterium gas can be collected at the discharge port of the gas centrifuge, and pure hydrogen deuterium can be output at the gas outlet of the gas centrifuge.

[0025] (2) The method of the present invention uses step-by-step separation, which has significant effects and outputs high purity deuterium gas. Compared with the traditional method of separating hydrogen deuterium and deuterium gas, which has complex processes and numerous equipment, it has the advantages of simple design and strong operability, low safety risks, low production costs, and avoids waste of resources, and has broad industrial application prospects. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The present invention is a schematic diagram of a method for separating hydrogen and deuterium by microfluidic centrifugation.

[0027] Figure 2 The figure is a schematic diagram of a device for microfluidic centrifugal separation of hydrogen and deuterium according to the present invention.

[0028] In the figure, the names corresponding to the reference numerals are: 1-gas delivery port, 2-inlet valve, 3-fan, 4-gas centrifuge No. 1, 5-gas centrifuge No. 2, 6-deuterium storage tank, 7-exhaust port, 8-rotor, 9-housing, 10-inlet port, 11-discharge port, 12-gas outlet, 13-bearing, 14-adsorbent material, 15-motor. DETAILED DESCRIPTION

[0029] In a first aspect, the present invention provides a device for separating hydrogen and deuterium by microfluidic centrifugation, which adopts the following technical scheme: a device for separating hydrogen and deuterium by microfluidic centrifugation, such as Figure 2 As shown, it includes a rotor 8, a housing 9, a bearing 13, a motor 15, an adsorption material 14, a discharge port 11, an air inlet 10 and an air outlet 12.

[0030] The present invention discloses a device for separating hydrogen and deuterium by microfluidic centrifugation. The cathode product (deuterium gas containing hydrogen and deuterium) of heavy water electrolysis enters the cavity of rotor 8 through air inlet 10. Rotor 8 is driven by motor 15 to rotate at high speed. When rotating at high speed, rotor 8 generates a strong centrifugal force field. Mixed gas is thrown outward radially under the action of centrifugal force. Heavier molecules (deuterium gas molecules) move to the outer edge of rotor 8 under the action of centrifugal force, while lighter molecules (hydrogen and deuterium molecules) stay near the center of rotor 8. According to the set flow path, deuterium gas molecules slide along the wall of rotor 8 to the bottom of rotor cavity and are discharged by discharge pipe; a part of mixed gas that is not discharged is enriched in the middle of rotor 8 cavity, and deuterium gas in the mixed gas is adsorbed and collected by adsorption material 14 on the inner wall of the middle of rotor 8 cavity; the remaining hydrogen and deuterium molecules, due to the combined action of centrifugal force and pressure difference, move upward in an orderly manner along the axis, and are finally discharged from the top gas outlet.

[0031] The present invention provides a device for separating hydrogen and deuterium by microfluidic centrifugation. The rotor 8 is the core component of the gas centrifuge, which is usually cylindrical or cannulated, made of high-strength, corrosion-resistant materials, and is precisely processed and balanced to ensure its stability and durability when rotating at high speed. The minimum rotation speed of the rotor for separating deuterium gas and hydrogen-deuterium mixed gas is 40,000 rpm.

[0032] The present invention is a device for separating hydrogen and deuterium by microfluidic centrifugation, wherein the housing 9 surrounds the rotor 8, provides mechanical support and sealing, and prevents gas leakage. A gas flow path is usually designed in the housing to guide the separated gas out.

[0033] The present invention provides a device for microfluidic centrifugal separation of hydrogen and deuterium, wherein the bearing 13 is used to support and position the rotor 8 to ensure its smooth operation. Due to the high-speed rotation of the rotor 8, the bearing 13 needs to have high durability and low friction characteristics, and usually adopts a magnetic suspension bearing or an air bearing.

[0034] The present invention provides a device for microfluidic centrifugal separation of hydrogen and deuterium. The motor 15 is used to drive the rotor 8 to rotate. At the same time, its precise speed control, overload protection and overheating protection can ensure that the device works safely and efficiently.

[0035] The present invention discloses a device for microfluidic centrifugal separation of hydrogen and deuterium, wherein the adsorbent material (metal organic framework material) 14 is located in the middle of the rotor 8 cavity, closely fits the inner wall, and can better adsorb deuterium. Adding amino (-NH2) groups to the metal organic framework material UiO-66 can achieve stronger selective adsorption of deuterium through polar interaction and weak hydrogen bond formation. At the same time, in the synthesis process of UiO-66, aminoterephthalic acid (NH2-BDC) is used as an organic ligand to form an amino-functionalized MOF, UiO-66-NH2. By changing the ratio of NH2-BDC to Zr ions, the reaction temperature and time, the pore structure of UiO-66 can be adjusted to reach 0.6-0.8nm, and the porosity can reach 50%-70%, so that deuterium molecules can be accommodated and smaller hydrogen and deuterium molecules can be excluded, thereby achieving selective adsorption of deuterium. Compared with other adsorption materials such as activated carbon and molybdenum disulfide, metal organic framework materials usually have extremely high specific surface area, which can provide more adsorption sites, thereby improving adsorption efficiency; metal organic framework materials are usually prepared by simple synthesis methods, and the cost of the raw materials used is relatively low, and they are easy to buy on the market; metal organic framework materials usually have good chemical stability and can operate stably for a long time under various environmental conditions. After the separation is completed, the air inlet is sealed, and the air outlet is connected to a vacuum pump. By reducing the pressure, the pressure in the container is reduced, and the deuterium gas is extracted from the metal framework material, and the pure deuterium gas is output through the outlet.

[0036] The present invention provides a device for microfluidic centrifugal separation of hydrogen and deuterium. The discharge pipe extends to the bottom of the rotor 8 cavity. During the separation process, deuterium gas is enriched at the bottom of the rotor 8 cavity and is transported to the discharge port 11 through the discharge pipe to collect pure deuterium gas.

[0037] The present invention provides a device for microfluidic centrifugal separation of hydrogen and deuterium, wherein the outlet pipe extends to the top of the rotor 8 cavity. During the separation process, hydrogen and deuterium are enriched at the top of the rotor 8 cavity and transported to the outlet 12 through the outlet pipe to output pure hydrogen and deuterium.

[0038] The present invention provides a device for separating hydrogen and deuterium by microfluidic centrifugation, wherein the air inlet pipe extends to the middle of the rotor cavity 8. During the separation process, the air inlet 10 inputs deuterium gas mixed with a small amount of hydrogen and deuterium, and the deuterium gas is transported to the middle of the rotor cavity through the air inlet pipe. To achieve the above purpose, in a second aspect, the present invention provides a method for separating hydrogen and deuterium by microfluidic centrifugation, which adopts the following technical scheme: A method for separating hydrogen and deuterium by microfluidic centrifugation, the process is as follows: Figure 1 As shown, the following steps are included:

[0039] S1. Open the air inlet valve 2 and the fan 3, and introduce unpurified deuterium gas. The fan 3 rotates the blades or impeller to generate airflow, thereby generating an airflow pressure difference to input the mixed gas into the entire pipeline system.

[0040] S2. The mixed gas enters the No. 1 gas centrifuge 4 through the air inlet. The motor drives the rotor to rotate at high speed. The rotor generates a strong centrifugal force field when rotating at high speed. The mixed gas is thrown radially outward under the action of centrifugal force. The heavier molecules (deuterium molecules) will move to the outer edge of the rotor under the action of centrifugal force, while the lighter molecules (hydrogen-deuterium molecules) will stay near the center of the rotor. The gas flows along the set path, and the deuterium molecules slide along the rotor wall to the bottom of the rotor cavity and are discharged by the discharge pipe; a part of the undischarged mixed gas is enriched in the middle of the rotor cavity, and the deuterium in the mixed gas is adsorbed and collected by the adsorption material on the inner wall of the middle of the rotor cavity; the remaining hydrogen-deuterium molecules, due to the combined action of centrifugal force and pressure difference, move upward in an orderly manner along the axis, and are finally discharged from the top outlet.

[0041] S3. The mixed gas that has been separated once enters the No. 2 gas centrifuge through the air inlet. The motor drives the rotor to rotate at high speed. The rotor generates a strong centrifugal force field when rotating at high speed. The mixed gas is thrown radially outward under the action of centrifugal force. The heavier molecules (deuterium molecules) will move to the outer edge of the rotor under the action of centrifugal force, while the lighter molecules (hydrogen-deuterium molecules) will stay near the center of the rotor. The gas follows the set flow path, and the deuterium molecules slide along the rotor wall to the bottom of the rotor cavity and are discharged by the discharge pipe; a part of the undischarged mixed gas is enriched in the middle of the rotor cavity, and the deuterium in the mixed gas is adsorbed and collected by the adsorption material on the inner wall of the middle of the rotor cavity; the remaining hydrogen-deuterium molecules, due to the combined action of centrifugal force and pressure difference, move upward in an orderly manner along the axis, and are finally discharged from the top outlet.

[0042] S4, connect multiple gas centrifuges after the No. 2 gas centrifuge, repeat S2 multiple times, and the separation of hydrogen, deuterium and deuterium gas can be achieved. After the separation is completed, the pressure in the container is reduced by decompression, the deuterium gas is extracted from the metal group, output from the discharge port, and stored in the deuterium storage tank 6. Finally, pure hydrogen, deuterium and deuterium gas are obtained.

[0043] The above is the specific equipment and process of the present invention, which is explained with the help of the figures. However, the present invention is not limited to the specific equipment and process described above, and any modification or replacement of the relevant equipment based on the above, and any partial adjustment of the relevant process based on the above, belong to the present invention.

Claims

1. A device for microfluidic centrifugal separation of hydrogen and deuterium, characterized in that: The invention comprises a rotor, a housing, a bearing, an electric motor, an adsorbent material, a discharge port, an air inlet and an air outlet. The cathode product of the electrolysis of heavy water with deuterium gas containing hydrogen and deuterium enters the rotor cavity through the air inlet. The rotor is driven by the electric motor to rotate at a high speed. The rotor generates a strong centrifugal force field when rotating at a high speed. The mixed gas is thrown outward radially under the action of the centrifugal force. The heavier deuterium gas molecules move to the outer edge of the rotor under the action of the centrifugal force, while the lighter hydrogen and deuterium molecules stay near the center of the rotor. The gas flows along the set flow path, and the deuterium gas molecules slide along the rotor wall to the bottom of the rotor cavity and are discharged by the discharge pipe. A part of the mixed gas that has not been discharged is enriched in the middle of the rotor cavity, and the deuterium gas in the mixed gas is adsorbed and collected by the adsorbent material on the inner wall of the middle of the rotor cavity. The remaining hydrogen and deuterium molecules, due to the combined action of the centrifugal force and the pressure difference, move upward in an orderly manner along the axis and are finally discharged from the top air outlet.

2. The device for microfluidic centrifugal separation of hydrogen and deuterium according to claim 1, characterized in that: The rotor is the core component of the gas centrifuge, usually cylindrical or barrel-shaped, made of high-strength, corrosion-resistant materials, and precision-machined and balanced to ensure its stability and durability at high-speed rotation. The minimum rotation speed of the rotor for separating deuterium and hydrogen-deuterium mixed gas is 40,000rpm.

3. The device for microfluidic centrifugal separation of hydrogen and deuterium according to claim 1, characterized in that: The shell surrounds the rotor, providing mechanical support and sealing to prevent gas leakage; a gas flow path is usually designed inside the shell to discharge the separated gas; the bearing is used to support and position the rotor to ensure its smooth operation, and the bearing usually adopts a magnetic bearing or an air bearing.

4. The device for microfluidic centrifugal separation of hydrogen and deuterium according to claim 1, characterized in that: The adsorption material is a metal organic framework material, which is located in the middle of the rotor cavity and fits tightly with the inner wall, so that deuterium gas can be better adsorbed. Amino groups are added to the metal organic framework material UiO-66, so that deuterium gas can be more selectively adsorbed through polar interactions and weak hydrogen bond formation. At the same time, in the synthesis process of UiO-66, amino terephthalic acid is used as an organic ligand to form an amino-functionalized MOF, UiO-66-NH2. By changing the ratio of NH2-BDC to Zr ions, the reaction temperature and time, and by adjusting the pore structure of UiO-66 to reach 0.6-0.8nm and a porosity of 50%-70%, deuterium gas molecules can be accommodated and smaller hydrogen-deuterium molecules are excluded, thereby achieving selective adsorption of deuterium gas.

5. The device for microfluidic centrifugal separation of hydrogen and deuterium according to claim 1, characterized in that: The discharge pipe extends to the bottom of the rotor chamber. During the separation process, deuterium gas is enriched at the bottom of the rotor chamber and is transported to the discharge port through the discharge pipe to collect pure deuterium gas.

6. The device for microfluidic centrifugal separation of hydrogen and deuterium according to claim 1, characterized in that: The gas outlet pipeline extends to the top of the rotor chamber. During the separation process, hydrogen and deuterium are enriched at the top of the rotor chamber and transported to the gas outlet through the gas outlet pipeline to output pure hydrogen and deuterium.

7. The device for microfluidic centrifugal separation of hydrogen and deuterium according to claim 1, characterized in that: The air inlet pipeline extends to the middle of the rotor cavity. During the separation process, deuterium gas mixed with a small amount of hydrogen and deuterium is input into the air inlet and transported to the middle of the rotor cavity through the air inlet pipeline.

8. A method for separating hydrogen and deuterium by microfluidic centrifugation, using the device for separating hydrogen and deuterium by microfluidic centrifugation according to claim 1, characterized in that: The steps include: S1. Open the air inlet valve and the fan, and introduce unpurified deuterium gas. The fan rotates the blades or impeller to generate airflow, thereby generating an airflow pressure difference to input the mixed gas into the entire pipeline system; S2. The mixed gas enters the No. 1 gas centrifuge through the air inlet, and the motor drives the rotor to rotate at high speed. The rotor generates a strong centrifugal force field when rotating at high speed. The mixed gas is thrown radially outward under the action of centrifugal force. The heavier deuterium molecules will move to the outer edge of the rotor under the action of centrifugal force, while the lighter hydrogen and deuterium molecules will stay near the center of the rotor; the gas follows the set flow path, and the deuterium molecules slide along the rotor wall to the bottom of the rotor cavity and are discharged through the discharge pipe; a part of the undischarged mixed gas is enriched in the middle of the rotor cavity, and the deuterium in the mixed gas is adsorbed and collected by the metal organic framework material on the inner wall of the middle of the rotor cavity; the remaining hydrogen and deuterium molecules, due to the combined action of centrifugal force and pressure difference, move upward in an orderly manner along the axis, and are finally discharged from the top outlet; S3. The mixed gas separated once enters the No. 2 gas centrifuge through the air inlet, and the motor drives the rotor to rotate at high speed. The rotor generates a strong centrifugal force field when rotating at high speed. The mixed gas is thrown radially outward under the action of centrifugal force, and the heavier deuterium molecules move to the outer edge of the rotor under the action of centrifugal force, while the lighter hydrogen and deuterium molecules stay near the center of the rotor; the gas flows along the set flow path, and the deuterium molecules slide along the rotor wall to the bottom of the rotor cavity and are discharged by the discharge pipe; a part of the mixed gas that has not been discharged is enriched in the middle of the rotor cavity, and the deuterium in the mixed gas is adsorbed and collected by the metal organic framework material on the inner wall of the middle of the rotor cavity; the remaining hydrogen and deuterium molecules, due to the combined action of centrifugal force and pressure difference, move upward in an orderly manner along the axis, and are finally discharged from the top outlet; S4. Connect multiple gas centrifuges after No. 2 gas centrifuge and repeat S2 multiple times to achieve separation of hydrogen deuterium and deuterium gas. After the separation is completed, reduce the pressure in the container by decompression, extract the deuterium gas from the metal group, output it from the discharge port, and store it in a deuterium storage tank to finally obtain pure hydrogen deuterium and deuterium gas.

9. The method for separating hydrogen and deuterium by microfluidic centrifugation according to claim 8, characterized in that: The gas flow velocity at the gas inlet is 10-25 m / s. The pressure drop is controlled at 0.5 MPa during separation and 10 MPa during deuterium extraction. -3 ~10 -6 Pa.

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