阅读说明：本技术 一种生产不同组分正氢和仲氢的装置 (Device for producing orthohydrogen and parahydrogen with different components ) 是由 陆小飞 张启勇 周芷伟 成安义 吴克平 李姗姗 于 2021-07-29 设计创作，主要内容包括：本发明公开一种生产不同组分正氢和仲氢的装置,室温状态的正常氢气分为常温平衡氢流路、一级平衡氢流路、二级平衡氢流路。常温平衡氢流路提供一路室温正常氢,通过一级制冷工质降温后提供一级正常氢,通过二级制冷工质降温后提供二级正常氢；一级平衡氢流路通过一级制冷工质降温和正仲氢催化转化提供一级平衡氢,通过二级制冷工质降温后提供二级温度的一级平衡氢；二级平衡氢流路通过一级制冷工质降温和正仲氢催化转化生产一级平衡氢,再通过二级制冷工质降温和正仲氢催化转化提供二级平衡氢。本发明通过调节三路室温正常氢气供给的压力和流量,能够提供不同压力、温度、流速和组分比的正仲氢流体,本装置结构紧凑、接口清晰。(The invention discloses a device for producing orthohydrogen and parahydrogen with different components. The normal temperature hydrogen balancing flow path provides one path of normal hydrogen at room temperature, the first-level normal hydrogen is provided after the temperature of the first-level refrigeration working medium is reduced, and the second-level normal hydrogen is provided after the temperature of the second-level refrigeration working medium is reduced; the primary balance hydrogen flow path provides primary balance hydrogen through the cooling of a primary refrigeration working medium and the catalytic conversion of the ortho-para hydrogen, and provides primary balance hydrogen at a secondary temperature after the cooling of a secondary refrigeration working medium; the secondary balanced hydrogen flow path produces primary balanced hydrogen through the cooling of the primary refrigerant and the catalytic conversion of the ortho-para hydrogen, and then provides secondary balanced hydrogen through the cooling of the secondary refrigerant and the catalytic conversion of the ortho-para hydrogen. The device can provide the parahydrogen fluid with different pressures, temperatures, flow rates and component ratios by adjusting the pressure and flow of the three paths of room-temperature normal hydrogen supply, and has compact structure and clear interface.)

1. An apparatus for producing orthohydrogen and parahydrogen of different compositions, characterized by: the system comprises a normal temperature hydrogen balancing flow path, a primary hydrogen balancing flow path, a secondary hydrogen balancing flow path, a primary refrigeration working medium flow path, a secondary refrigeration working medium flow path, an orthohydrogen output hydrogen flow path and a vacuum heat insulation cold box.

2. The device as claimed in claim 1, wherein the inlet end of the normal temperature balance hydrogen flow path is connected with a hydrogen source, and is provided with a regulating valve and a flowmeter for controlling the flow rate of the normal temperature balance hydrogen flow path; the outlet end of the normal temperature hydrogen balancing flow path is provided with three branches, an adjusting valve and a thermometer, the first branch provides normal hydrogen at normal temperature, the second branch provides primary normal hydrogen realized by cooling of a primary refrigeration working medium, and the third branch provides secondary normal hydrogen realized by cooling of a secondary refrigeration working medium.

3. The apparatus of claim 1 wherein the inlet end of the primary balance hydrogen flow path is connected to a source of hydrogen gas and is provided with a regulator valve and a flow meter for controlling the flow rate of the primary balance hydrogen flow path; the outlet end of the primary balance hydrogen flow path is provided with two branches, a regulating valve and a thermometer thereof, the first branch provides primary balance hydrogen realized by cooling of a primary refrigeration working medium and an ortho-para hydrogen catalytic converter and is provided with an ortho-para hydrogen component measuring meter, and the second branch provides primary balance hydrogen of secondary temperature realized by cooling of a secondary refrigeration working medium.

4. The apparatus of claim 1, wherein the inlet end of the secondary balance hydrogen flow path is connected to a hydrogen source and is provided with a regulating valve and a flow meter for controlling the flow rate of the secondary balance hydrogen flow path; the outlet end of the secondary balanced hydrogen flow path is provided with a thermometer and an orthoparahydrogen component measuring meter, and the outlet end of the secondary balanced hydrogen flow path provides secondary balanced hydrogen realized by the primary refrigeration working medium and the secondary refrigeration working medium cooling and the orthoparahydrogen catalytic converter.

5. The apparatus of claim 1, wherein the inlet end of the primary refrigerant flow path is provided with a primary refrigerant input port and a regulating valve, the outlet end of the primary refrigerant flow path is provided with a primary refrigerant output port and a regulating valve, and the primary refrigerant flow path is cooled by the cryocooler or the cryoworking medium.

6. The device as claimed in claim 1, wherein the inlet end of the secondary refrigeration working medium flow path is provided with a secondary refrigeration working medium input interface and a regulating valve, the outlet end of the secondary refrigeration working medium flow path is provided with a secondary refrigeration working medium output interface and a regulating valve, and the secondary refrigeration working medium flow path is provided with refrigeration capacity by the cryogenic refrigerator or provided with refrigeration capacity by the cryogenic working medium.

7. The apparatus of claim 1 wherein the inlet end of the para-hydrogen export hydrogen flow path is provided with a six-way connection, and the para-hydrogen export hydrogen flow path is provided with a regulating valve, a heater and a pressure, temperature and para-hydrogen composition meter; the outlet end of the parahydrogen output hydrogen flow path provides an output interface of the hydrogen fluid outlet end with different pressures, temperatures, flow rates and parahydrogen component ratios.

8. The apparatus of claim 7, wherein the six-way interface is connected to the outlet ports of normal temperature hydrogen, primary normal hydrogen, secondary normal hydrogen, primary equilibrium hydrogen, secondary temperature primary equilibrium hydrogen, and secondary equilibrium hydrogen, respectively.

9. The device according to claim 1, wherein the vacuum heat insulation cold box is provided with a primary refrigeration working medium pre-cooling heat exchanger, a primary refrigeration working medium heat exchange unit and an orthohydrogen catalytic converter, the vacuum heat insulation cold box is provided with a secondary refrigeration working medium pre-cooling heat exchanger, a secondary refrigeration working medium heat exchange unit and an orthohydrogen catalytic converter, and the vacuum heat insulation cold box is provided with a vacuum interface.

Technical Field

The invention belongs to the technical field of industrial gas, and particularly relates to a device for producing orthohydrogen and parahydrogen with different components.

Background

The hydrogen molecule consists of two hydrogen atoms, and two states, orthohydrogen and parahydrogen, exist due to the difference in the spin direction of the two nuclei. The two hydrogen spin isomers differ in that the two nuclear spins of orthohydrogen are in the same direction and the two nuclear spins of parahydrogen are in opposite directions. When normal hydrogen gas is cooled to a lower temperature at room temperature, the orthohydrogen therein is slowly converted into parahydrogen, resulting in a decrease in the orthohydrogen component ratio and an increase in the parahydrogen component ratio and the release of heat, and finally the orthohydrogen and parahydrogen components of the hydrogen gas reach a new equilibrium state.

The normal hydrogen is based on the equilibrium hydrogen at room temperature, and the orthohydrogen and parahydrogen components are basically kept unchanged during the rapid temperature reduction or temperature return of the normal hydrogen under the condition of no catalytic conversion, namely the orthohydrogen and parahydrogen component ratio is 75 percent and 25 percent. The composition of the equilibrium hydrogen is temperature dependent and is an equilibrium state after the conversion of ortho-hydrogen and para-hydrogen into each other is stabilized. Typical equilibrium hydrogen at ambient temperature is 75% ortho-hydrogen + 25% para-hydrogen, equilibrium hydrogen at 77K is 50% ortho-hydrogen + 50% para-hydrogen, and equilibrium hydrogen at liquid hydrogen normal boiling point (20.4K) is 0.2% ortho-hydrogen + 99.8% para-hydrogen.

The natural conversion process between ortho-hydrogen and para-hydrogen is extremely slow when the temperature of the equilibrium hydrogen gas changes. Research results show that the conversion between orthohydrogen and parahydrogen is a magnetic mechanism, and the interaction of a non-zero magnetic moment exists between a magnetic center and hydrogen nuclei of two spins, so that the spin conversion of hydrogen molecules is accelerated. Therefore, in the process of hydrogen temperature reduction or temperature rise, a catalyst is required to accelerate the catalytic conversion between orthohydrogen and parahydrogen, and the equilibrium hydrogen in a new stable state is achieved.

The orthohydrogen and the parahydrogen have different thermodynamic properties and characteristics, the conversion between the orthohydrogen and the parahydrogen can generate heating or refrigerating effect, the orthohydrogen and the parahydrogen with different components have wide application in engineering technology and scientific research, and the normal-temperature hydrogen or the low-temperature liquid hydrogen widely used in industry can not provide the orthohydrogen and the parahydrogen with different working conditions and any component proportion. The existing research on parahydrogen focuses on a catalytic conversion device of parahydrogen (such as patent CN 203162532U, CN 203490203U, CN 108562112A, CN 109028755A), the performance of a parahydrogen catalyst and the measurement of the content of parahydrogen (such as patent CN 104730141A), and the technology of the research on parahydrogen is difficult to provide parahydrogen with different pressures, temperatures, flow rates and component ratios, and can not meet the requirements of engineering technology and scientific research.

Disclosure of Invention

In view of the above, the present invention provides an apparatus for producing orthohydrogen and parahydrogen with different compositions, aiming at the hydrogen or liquid hydrogen requirements with different orthohydrogen and parahydrogen component ratios, which realizes the hydrogen or liquid hydrogen production with different orthohydrogen and parahydrogen component ratios by means of the hydrogen fluid with different orthohydrogen and parahydrogen component ratios optimally mixed, and provides the orthohydrogen fluid with different pressures, temperatures, flow rates and component ratios by combining the hydrogen gas supply pressure, flow rate and temperature regulation.

In order to achieve the purpose, the device for producing orthohydrogen and parahydrogen with different components comprises a normal-temperature equilibrium hydrogen flow path, a primary equilibrium hydrogen flow path, a secondary equilibrium hydrogen flow path, a primary refrigeration working medium flow path, a secondary refrigeration working medium flow path, an orthohydrogen output hydrogen flow path and a vacuum heat-insulating cold box.

Further, the normal-temperature balanced hydrogen flow path realizes functions of normal-temperature normal hydrogen, primary normal hydrogen and secondary normal hydrogen. The inlet end of the normal temperature balance hydrogen flow path is connected with a hydrogen source and is provided with a regulating valve and a flowmeter for controlling the flow rate of the normal temperature balance hydrogen flow path. The outlet end of the normal temperature hydrogen balancing flow path is provided with three branches, an adjusting valve and a thermometer, the first branch provides normal hydrogen at normal temperature, the second branch provides primary normal hydrogen realized by cooling of a primary refrigeration working medium, and the third branch provides secondary normal hydrogen realized by cooling of a secondary refrigeration working medium.

Further, the primary hydrogen balance flow path realizes the functions of primary hydrogen balance and secondary temperature primary hydrogen balance. The inlet end of the primary balance hydrogen flow path is connected with a hydrogen source and is provided with a regulating valve and a flowmeter for controlling the flow rate of the primary balance hydrogen flow path; the outlet end of the primary balance hydrogen flow path is provided with two branches, a regulating valve and a thermometer thereof, the first branch provides primary balance hydrogen realized by the primary refrigeration working medium cooling and the normal-parahydrogen catalytic converter and is provided with a normal-parahydrogen component measuring meter, and the second branch provides primary balance hydrogen of secondary temperature realized by the secondary refrigeration working medium cooling.

Further, the secondary hydrogen balance flow path performs a function of secondary hydrogen balance. The inlet end of the secondary balanced hydrogen flow path is connected with a hydrogen source and is provided with a regulating valve and a flowmeter for controlling the flow rate of the secondary balanced hydrogen flow path, and the outlet end of the secondary temperature balanced hydrogen flow path is provided with a thermometer and an orthohydrogen component measuring meter. The secondary balanced hydrogen flow path is used for cooling the primary refrigeration working medium and realizing primary balanced hydrogen by the positive para-hydrogen catalytic converter, and further realizing secondary balanced hydrogen by cooling the secondary refrigeration working medium and realizing secondary balanced hydrogen by the positive para-hydrogen catalytic converter.

Furthermore, the primary refrigeration working medium flow path realizes the function of cooling the hydrogen flow path to the primary temperature. The inlet end of the primary refrigeration working medium flow path is provided with a primary refrigeration working medium input interface and an adjusting valve, and the outlet end of the primary refrigeration working medium flow path is provided with a primary refrigeration working medium output adjusting valve and an interface. The primary refrigeration working medium flow path is provided with cold energy by the low-temperature refrigerator or provided with cold energy by the low-temperature working medium.

Further, the secondary refrigerant flow path realizes the function of cooling the hydrogen flow path to the secondary temperature. The inlet end of the secondary refrigeration working medium flow path is provided with a secondary refrigeration working medium input interface and an adjusting valve, and the outlet end of the secondary refrigeration working medium flow path is provided with a secondary refrigeration working medium output adjusting valve and an interface. The secondary refrigeration working medium flow path is provided with cold energy by the low-temperature refrigerator or is provided with cold energy by the low-temperature working medium.

Further, a six-way interface is arranged at the inlet end of the para-hydrogen output hydrogen flow path, and the para-hydrogen output hydrogen flow path is provided with a regulating valve, a heater and a pressure, temperature and para-hydrogen component measuring meter; the outlet end of the parahydrogen output hydrogen flow path provides an output interface of the hydrogen fluid outlet end with different pressures, temperatures, flow rates and parahydrogen component ratios.

Furthermore, the six-way interface is respectively connected to the outlet ends of normal temperature normal hydrogen, primary normal hydrogen, secondary normal hydrogen, primary equilibrium hydrogen, secondary temperature primary equilibrium hydrogen and secondary equilibrium hydrogen. The optimal combination is selected according to the temperature and para-hydrogen composition requirements of the user requirements to reduce the energy consumption of the device and reduce the operation of the process.

Further, the hydrogen flow paths of different components of para-hydrogen fulfill the function of hydrogen fluids of different pressures, temperatures, flow rates and ortho-para-hydrogen component ratios. The hydrogen flow paths of different components of the parahydrogen are provided with a normal temperature balanced hydrogen flow path, a primary balanced hydrogen flow path and interfaces of outlet ends of a secondary balanced hydrogen flow path, the hydrogen flow paths of different components of the parahydrogen are provided with a heater and a regulating valve, the hydrogen flow paths of different components of the parahydrogen are provided with pressure, temperature and component measuring meters, and the hydrogen flow paths with different orthohydrogen and parahydrogen component ratios are provided with output interfaces. Further, the vacuum heat insulation cold box has the functions of reducing the temperature of the hydrogen flow path to a specified temperature and performing catalytic conversion on the para-hydrogen. The vacuum heat insulation cold box is provided with a primary refrigeration working medium precooling heat exchanger, a primary refrigeration working medium heat exchange module and an ortho-para hydrogen catalytic converter, the vacuum heat insulation cold box is provided with a secondary refrigeration working medium precooling heat exchanger, a secondary refrigeration working medium heat exchange module and an ortho-para hydrogen catalytic converter, and the vacuum heat insulation cold box is provided with a vacuum interface.

The working principle is as follows: a device for producing orthohydrogen and parahydrogen with different components divides a normal hydrogen source under the room temperature state into three paths, wherein the first path of normal hydrogen source firstly provides one path of normal temperature normal hydrogen (75% orthohydrogen and 25% parahydrogen), and is divided into two paths after being cooled to the first temperature by a first-stage refrigeration working medium, one path of normal hydrogen (75% orthohydrogen and 25% parahydrogen) is provided, and the other path of normal hydrogen (75% orthohydrogen and 25% parahydrogen) is provided after being cooled to the second temperature by a second-stage refrigeration working medium; the second path of normal hydrogen source is cooled to the first-stage temperature through a first-stage refrigeration working medium and produces first-stage equilibrium hydrogen through an orthohydrogen catalytic converter, and then the second path of normal hydrogen source is divided into two paths, wherein one path of normal hydrogen source provides first-stage equilibrium hydrogen (taking the first-stage temperature of 77K as an example, 50% orthohydrogen and 50% parahydrogen), and the other path of normal hydrogen source provides first-stage equilibrium hydrogen at the second-stage temperature after being cooled to the second-stage temperature through a second-stage refrigeration working medium (taking the first-stage temperature of 77K as an example, 50% orthohydrogen and 50% parahydrogen); the third normal hydrogen source is cooled to the first-stage temperature by the first-stage refrigeration working medium and produces first-stage equilibrium hydrogen by the normal-parahydrogen catalytic converter, and then is cooled to the second-stage temperature by the second-stage refrigeration working medium and produces second-stage equilibrium hydrogen by the normal-parahydrogen catalytic converter (taking the second-stage temperature of 20K as an example, 0.02 percent of normal hydrogen and 99.8 percent of parahydrogen). The method realizes the production of hydrogen or liquid hydrogen with different components of parahydrogen by adjusting the supply pressure and flow rate of three paths of normal hydrogen at room temperature and optimally combining six paths of normal hydrogen at room temperature, primary normal hydrogen, primary equilibrium hydrogen, secondary normal hydrogen, primary equilibrium hydrogen at secondary temperature and secondary equilibrium hydrogen.

The invention has the following beneficial effects:

the refrigeration working medium and the para-hydrogen catalytic converter adopted by the invention are mature, and the designed process flow can be flexibly operated according to requirements to realize the high-efficiency production of hydrogen or liquid hydrogen with different ortho-hydrogen and para-hydrogen component ratios. The device for producing orthohydrogen and parahydrogen with different components disclosed by the invention can provide orthohydrogen and parahydrogen fluids with different pressures, temperatures, flow rates and component proportions, meets the requirements of engineering application and scientific research on the orthohydrogen and parahydrogen with different working conditions, and is comprehensive in function and strong in applicability.

Drawings

FIG. 1 is a process diagram of the present invention.

In the figure, J1, J4-J8-device interfaces, J9-vacuum pump interfaces, CB-vacuum heat insulation cold box, OP 1-OP 3-normal-secondary hydrogen catalytic converter, HX 1-primary heat exchanger, HX 2-secondary heat exchanger, H1-H6-heat exchanger, R1-primary refrigeration working medium heat exchange unit, R2-secondary refrigeration working medium heat exchange unit, V_H2、V_R1、V_R2、V₁₀、V₁₁、V₁₂、V₁₃、V₂₀、V₂₂、V₂₃、V₃₀、V₄₀、V₆₀、V₈₀Regulating valve, P₀～P₂、P₄Pressure gauges, T1, T2, T4, T11, T13, T21, T23, T31, T33-thermometers, Q-heaters, F1-F3-flowmeters, A1-A4-positivePara-hydrogen component measuring meters 1, 10-12, 20-22, 30, 31, 40-46, 48, 50, 60, 70 and 80-pipelines, and L1 and L2-liquid level meters.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention are described in further detail below with reference to the embodiments of the present invention and the accompanying drawings, but the described embodiments are some, not all, of the embodiments of the present invention. Other embodiments based on the embodiments of the invention, which are not inventive by the person skilled in the art, are within the scope of protection of the invention.

As shown in fig. 1, an apparatus for producing orthohydrogen and parahydrogen with different components is disclosed, which comprises the following components: the system comprises a normal temperature balanced hydrogen flow path, a primary balanced hydrogen flow path, a secondary balanced hydrogen flow path, a primary refrigeration working medium flow path, a secondary refrigeration working medium flow path, an orthohydrogen output hydrogen flow path and a vacuum heat insulation cold box.

Specifically, an apparatus for producing different compositions of orthohydrogen and parahydrogen ratios comprises the following embodiments (taking a primary temperature of 77K, a secondary temperature of 20K as an example):

the equipment used in the apparatus is as follows, with reference to fig. 1. Normal hydrogen at room temperature passes through device interface J1 and regulating valve V_H2Connected to a pipe 1, the pipe 1 being provided with a pressure gauge P0 and passing through a regulating valve V_H2The control device supplies air pressure. The outlet of the pipeline 1 is divided into three paths, the first path is provided with a flowmeter F1 and passes through a regulating valve V₁₀Connected to a normal temperature balance hydrogen flow path pipeline 10, and provided with a flow meter F2 and a regulating valve V₂₀Is connected to a first-stage hydrogen-balance flow path pipeline 20, and a third path is provided with a flow meter F3 and passes through a regulating valve V₃₀Is connected to the secondary equilibrium hydrogen flow path conduit 30.

The normal temperature equilibrium hydrogen flow path pipeline 10 realizes the functions of providing normal temperature normal hydrogen, primary normal hydrogen and secondary normal hydrogen; the normal temperature balance hydrogen flow path pipeline 10 is divided into two paths after entering the vacuum heat insulation cold box CB, and one path is divided into two paths by a regulating valve V₁₁Connected to the pipe 41 to provide normal temperature hydrogen (75% normal hydrogen + 25% secondary hydrogen), and the other path passes through the primary heat exchanger HX1 for precooling and the primary refrigerant heat exchange unit R1 is connected to the pipeline 11 after being cooled. The pipe 11 was provided with a thermometer T11 and an ortho-para hydrogen component meter A1. The outlet of the pipeline 11 is divided into two paths, and one path of the two paths passes through the regulating valve V₁₂Is connected to a line 42 to provide primary normal hydrogen (75% normal + 25% para-hydrogen) and the other path is through a regulator valve V₁₃Is connected to the conduit 12. The conduit 12 is connected to the conduit 44 after being cooled by the secondary heat exchanger HX2 and the secondary refrigerant heat exchange unit. Line 44 is provided with a temperature gauge T13 and provides secondary normal hydrogen (75% normal hydrogen + 25% parahydrogen). The outlets of the pipe 41, the pipe 42, and the pipe 44 are connected to the parahydrogen output hydrogen flow path pipe 40.

The primary equilibrium hydrogen flow path conduit 20 performs the function of providing primary equilibrium hydrogen and secondary temperature primary equilibrium hydrogen; the primary balance hydrogen flow path pipeline 20 enters a vacuum heat insulation cold box CB, and then is precooled by a primary heat exchanger HX1, cooled by a primary refrigerant heat exchange R1 and connected to a pipeline 21 by an ortho-para hydrogen catalytic converter OP 1. The pipe 21 was provided with a thermometer T21 and an ortho-para hydrogen component meter A2. The outlet of the pipeline 21 is divided into two paths, and one path passes through the regulating valve V₂₂Is connected to line 43 to provide the first balance of hydrogen (50% ortho + 50% para) and the other path is through a regulator valve V₂₃Is connected to the conduit 22. Conduit 22 is connected to conduit 45 via secondary heat exchanger HX2 pre-cooling and secondary refrigerant heat exchange unit R2. Line 45 is provided with a temperature gauge T23 and provides the first level of equilibrium hydrogen (50% ortho + 50% para) at the second level of temperature. The outlets of the piping 43 and the piping 45 are connected to the parahydrogen output hydrogen flow path piping 40

The secondary equilibrium hydrogen flow path pipe 30 performs a function of supplying secondary equilibrium hydrogen; and the secondary balance hydrogen flow pipeline 30 enters a vacuum heat insulation cold box CB, is precooled by a primary heat exchanger HX1, is cooled by a primary refrigerant heat exchange unit R1, and is connected to the pipeline 31 by an ortho-para hydrogen catalytic converter OP 2. Conduit 31 is provided with a temperature gauge T31 and is connected to conduit 46 by a secondary heat exchanger HX2 precooling and a secondary refrigerant heat exchange unit R2 cooling and an ortho-para hydrogen catalytic converter OP 3. Line 46 was equipped with a thermometer T33 and an ortho-para hydrogen composition meter A3 and provided secondary equilibrium hydrogen (0.02% ortho-hydrogen + 99.8% para-hydrogen). An outlet of the conduit 46 is connected to the parahydrogen output hydrogen flow path conduit 40.

The flow pipeline 40 for outputting the ortho-para hydrogen realizes the function of producing the hydrogen or the liquid hydrogen of the ortho-para hydrogen with different components by mixing normal-temperature normal hydrogen, primary equilibrium hydrogen, secondary normal hydrogen, primary equilibrium hydrogen at a secondary temperature and secondary equilibrium hydrogen; the parahydrogen output flow pipeline 40 is provided with a heater Q and a thermometer T4 to realize the temperature regulation of the parahydrogen fluid; the flow path pipeline 40 for outputting the parahydrogen is provided with a regulating valve V₄₀Is connected to the pipe 48 to achieve the pressure regulation of para-hydrogen; the pipe 48 is provided with a pressure gauge P4 and an orthohydrogen component meter A4; the outlet of the parahydrogen output hydrogen flow pipeline 48 is connected to the device interface J4, and the parahydrogen output hydrogen flow pipeline 48 adopts a vacuum heat insulation pipeline.

The primary refrigeration working medium heat exchange unit R1 has the function of providing a cold source for cooling the normal-temperature hydrogen to the primary temperature; the primary refrigeration working medium heat exchange unit R1 is provided with a pipeline 50 at a primary refrigeration working medium inlet and a pipeline 60 at an outlet, the primary refrigeration working medium heat exchange unit R1 is provided with a heat exchanger H1, a heat exchanger H2 and a heat exchanger H3 of a heat flow path, and the primary refrigeration working medium heat exchange unit R1 is provided with a pressure gauge P1, a temperature gauge T1 and a liquid level gauge L1. The inlet end of the pipeline 50 passes through a regulating valve V_R1Connected to the device interface J5, the tubing 50 is vacuum insulated tubing. The outlet of the pipeline 60 of the first-stage refrigeration working medium outlet is passed through the regulating valve V₆₀To the device interface J6.

The secondary refrigeration working medium heat exchange unit R2 has the function of providing a cold source for cooling the primary temperature hydrogen to the secondary temperature; the secondary refrigeration working medium heat exchange unit R2 is provided with a pipeline 70 of a secondary refrigeration working medium inlet and a pipeline 80 of a secondary refrigeration working medium outlet, the secondary refrigeration working medium heat exchange unit R2 is provided with a heat exchanger H4, a heat exchanger H5 and a heat exchanger H6 of a heat flow path, and the secondary refrigeration working medium heat exchange unit R2 is provided with a pressure gauge P2, a temperature gauge T2 and a liquid level gauge L2. The inlet end of the pipeline 70 passes through a regulating valve V_R2Connected to the device interface J7, the conduit 70 is a vacuum insulated conduit. The outlet of the pipeline 80 of the secondary refrigeration working medium outlet is passed through the regulating valve V₈₀To the device interface J8.

Vacuum insulation cold box CB provides deviceThe function of low-temperature heat insulation environment; the vacuum heat insulation cold box CB is provided with a vacuum pump interface J9, and the required vacuum degree is not higher than 10 during normal work^-3Pa。

The working process of the system is as follows:

taking the first-stage temperature of 77K, the first-stage equilibrium hydrogen component of 50% orthohydrogen and 50% parahydrogen, the second-stage temperature of 20K and the second-stage equilibrium hydrogen component of 0.02% orthohydrogen and 99.8% parahydrogen as an example, the specific process for obtaining the orthohydrogen and parahydrogen fluid under the typical working condition is as follows:

typical operating conditions 1, production operation of 25% to 50% para-hydrogen at primary temperature: opening the regulating valve V_H2And controlling the pressure gauge P0 at a set value as required, and opening the primary refrigerant inlet valve regulating valve V_R1And an outlet valve V₆₀And the temperature T1, pressure P1 and level L1 (as applicable) of R1 are controlled at set points. Opening the regulating valve V₁₀And V₁₂And close V₁₁And V₁₃Supplying primary normal hydrogen (25% para-hydrogen) via line 42, opening regulator valve V₂₀And V₂₂And close V₂₃The first balance of hydrogen (containing 50% para-hydrogen) is provided via line 43. According to the requirements of the normal hydrogen-parahydrogen proportion, regulating a valve V₁₀The flow rate F1 of the normal temperature equilibrium hydrogen flow path 10 is adjusted by the adjusting valve V₂₀The flow rate F2 of the primary balance hydrogen flow path 20 was adjusted and the regulator valve V was further fine-tuned by the results of the para-hydrogen composition tester A4₁₂And V₂₂And the production of parahydrogen with the temperature of 25-50% of the first-grade temperature is realized.

Typical operating mode 2, 50% -99.8% para-hydrogen production operation at first-order temperature: opening the regulating valve V_H2And controlling the pressure gauge P0 at a set value as required, and opening the primary refrigerant inlet valve regulating valve V_R1And an outlet valve V₆₀And the temperature T1, the pressure P1 and the liquid level L1 of R1 are controlled at set values. Regulating valve V for opening inlet valve of secondary refrigeration working medium_R2And an outlet valve V₈₀And the temperature T2, pressure P2 and level L2 (as applicable) of R2 are controlled at set points. Opening the regulating valve V₂₀And V₂₂And close V₂₃First-order equilibrium hydrogen (50% para-hydrogen) is supplied via line 43 and the regulator valve V is opened₃₀Through a conduit 46 providingStage equilibrium hydrogen (99.8% para-hydrogen). According to the requirements of the normal hydrogen-parahydrogen proportion, regulating a valve V₂₀The flow rate F2 of the normal temperature equilibrium hydrogen flow path 20 is adjusted by the adjusting valve V₃₀The flow rate F3 of the primary balance hydrogen flow path 30 was adjusted and the regulator valve V was further fine-tuned by the results of the para-hydrogen composition tester A4₂₂And the production of parahydrogen with 50-99.8% of the first-stage temperature is realized.

Typical operating mode 3, production operation of 25% -50% para-hydrogen at secondary temperature: opening the regulating valve V_H2And controlling the pressure gauge P0 at a set value as required, and opening the primary refrigerant inlet valve regulating valve V_R1And an outlet valve V₆₀And controlling the temperature T1, the pressure P1 and the liquid level L1 of the R1 at set values, and opening a regulating valve V of a secondary refrigerant inlet valve_R2And an outlet valve V₈₀And the temperature T2, pressure P2 and level L2 (as applicable) of R2 are controlled at set points. Opening the regulating valve V₁₀And V₁₃And close V₁₁And V₁₂Supplying primary normal hydrogen (containing 25% para-hydrogen) at a secondary temperature via line 44, and opening the regulating valve V₂₀And V₂₃And close V₂₂The first balance hydrogen (containing 50% para-hydrogen) at the second temperature is provided via line 45. According to the requirements of the normal hydrogen-parahydrogen proportion, regulating a valve V₁₀The flow rate F1 of the normal temperature equilibrium hydrogen flow path 10 is adjusted by the adjusting valve V₂₀The flow rate F2 of the primary balance hydrogen flow path 20 was adjusted and the regulator valve V was further fine-tuned by the results of the para-hydrogen composition tester A4₁₃And V₂₃And the production of 25 to 50 percent para-hydrogen at the secondary temperature is realized.

Typical operating conditions 4, 50% to 99.8% para-hydrogen production operation at secondary temperature: opening the regulating valve V_H2And controlling the pressure gauge P0 at a set value as required, and opening the primary refrigerant inlet valve regulating valve V_R1And an outlet valve V₆₀And controlling the temperature T1, the pressure P1 and the liquid level L1 of the R1 at set values, and opening a regulating valve V of a secondary refrigerant inlet valve_R2And an outlet valve V₈₀And the temperature T2, pressure P2 and level L2 (as applicable) of R2 are controlled at set points. Opening the regulating valve V₂₀And V₂₃And close V₂₂The first-order equilibrium hydrogen (containing hydrogen) at the second-order temperature is supplied through the pipe 4550% para-hydrogen), regulating valve V is opened₃₀Secondary equilibrium hydrogen (containing 99.8 para-hydrogen) is provided via line 46. According to the requirements of the normal hydrogen-parahydrogen proportion, regulating a valve V₂₀The flow rate F2 of the normal temperature equilibrium hydrogen flow path 20 is adjusted by the adjusting valve V₃₀The flow rate F3 of the secondary balance hydrogen flow path 30 was adjusted and the regulator valve V was further fine-tuned by the results of the para-hydrogen composition tester A4₂₃And the production of parahydrogen with the secondary temperature of 50-99.8% is realized.

Para-para hydrogen production operation outside the typical regime: the production of 25-99.8% continuous parahydrogen component can be realized under the typical working conditions of 1-4. In addition, continuous regulation of the temperature of the off-duty parahydrogen fluid can be achieved by turning on the heater Q to control the temperature of T4, by regulating valve V₄₀Controlling the pressure of P4 enables continuous regulation of the pressure of the parahydrogen fluid.

The primary temperature and the secondary temperature given in the above embodiments can be realized by using corresponding refrigeration working media or cryo-refrigerators according to the requirements of orthohydrogen and parahydrogen of different components.

In conclusion, the embodiment of the invention can realize the production of orthohydrogen and parahydrogen with different components, and the provided six-way fluid with typical temperature and orthohydrogen-parahydrogen component ratio can select a proper combination mode according to requirements so as to reduce the energy consumption of a device or reduce the flow operation, and meet the requirements of engineering application and scientific research on the orthohydrogen and parahydrogen with different working conditions.

In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.