A lunar soil hydrogen reduction water production device and water production method

Abstract

The present invention relates to a lunar soil hydrogen reduction water production device and a water production method. The lunar soil hydrogen reduction water production device includes a screening device, a magnetic separation device, a heating device, a pressure device, a condensing device, a vibrating device and a hydrogen storage tank. The screening device is connected to the magnetic separation device and transports the screened lunar soil to the magnetic separation device. The magnetic separation device is connected to the heating device and inputs magnetic material into the heating chamber of the heating device. The magnetic separation device is installed at the vibrating end of the vibrating device; the hydrogen storage tank is connected to the top of the heating device through a hydrogen transmission pipeline, the bottom of the heating device is connected to the condensing device through a gas channel, the top of the condensing device is connected to the hydrogen storage tank through a hydrogen recovery pipeline, the pressure device is connected to the hydrogen transmission pipeline through a first pressure pipeline, and the pressure device is also connected to the gas channel through a second pressure pipeline; a first valve and a second valve are respectively provided on the hydrogen transmission pipelines on both sides of the first pressure pipeline, and a third valve and a fourth valve are respectively provided on the gas channels on both sides of the second pressure pipeline.

Description

Technical Field

[0001] The present invention relates to the field of mineral processing technology, and in particular to a lunar soil hydrogen reduction water production device and water production method. Background Art

[0002] Lunar soil is rich in a variety of mineral resources, among which ilmenite can be used as an important raw material for in-situ water production, enabling efficient, stable, and reliable in-situ replenishment of lunar water resources, and providing technical reserves for further in-situ hydrogen and oxygen conversion and utilization. However, due to the combined space environment of high vacuum, strong radiation, and weak gravity on the lunar surface, as well as the influence of the high ionization, special topological structure, thermal insulation, and multi-mineral symbiosis of the lunar soil, existing related technical solutions on the ground will no longer be applicable, which will give rise to new scientific problems and technical difficulties. Therefore, conducting research on the hydrogenation reduction technology for water production from oxygen-rich minerals on the lunar surface can provide technical support for the large-scale in-situ acquisition of water, oxygen, and other survival materials for future lunar residence and scientific expeditions.

[0003] The hydrogen reduction method uses iron oxides such as ilmenite (FeTiO3), which are abundant in lunar soil, as raw materials. This weakly magnetic mineral is reduced to produce water, metallic iron, and titanium dioxide at a moderate temperature of approximately 800-900°C. Water can be electrolyzed into oxygen and hydrogen, which can be further recycled. The main reaction principle is as follows:

[0004] FeTiO3+H2→Fe+TiO2+H2O

[0005] Hydrogen reduction is considered one of the most promising methods in gas-based reduction technology. On land, hydrogen reduction of iron ore is a mature ironmaking technology, offering advantages such as low reaction temperature, fast reaction rate, and high yield. Furthermore, combining hydrogen reduction to produce water with water electrolysis to produce oxygen allows for in-situ recycling of the reducing agent, H2.

[0006] The relatively mature technology currently available is the patent "A method for producing oxygen using lunar soil by hydrogen reduction-electrolysis", patent number 202210245989.7. The method related to water production by reduction is: directly using lunar soil for heating hydrogen reduction, and using condensation methods to condense and collect water.

[0007] The water production process is as follows: place the lunar soil into a closed reactor, heat it to 1100°C under vacuum conditions, introduce hydrogen at a rate of 210 ml / min into the reactor and keep it warm for 4.5 hours to obtain lunar soil containing metallic iron and calcium feldspar, and condense it to obtain product water.

[0008] Disadvantages of this technical method: This technology does not describe in detail the composition of the prototype and the realization of its functions. At the same time, the material involved in the reaction is directly lunar soil, and the efficiency of water production is too low. Summary of the Invention

[0009] In order to realize the in-situ preparation of water under the special environment of the lunar surface, the present invention provides a lunar soil hydrogen reduction water production device and water production method.

[0010] The technical solution of the present invention to solve the above technical problems is as follows: a lunar soil hydrogen reduction water production device, including a screening device, a magnetic separation device, a heating device, a pressure device, a condensing device, a vibration device and a hydrogen storage tank, the screening device is connected to the magnetic separation device and transports the screened lunar soil to the magnetic separation device, the magnetic separation device is connected to the heating device and inputs the magnetic material into the heating chamber of the heating device, and the magnetic separation device is installed at the vibration end of the vibration device; the hydrogen storage tank is connected to the top of the heating device through a hydrogen transmission pipeline, the bottom of the heating device is connected to the condensing device through a gas channel, the top of the condensing device is connected to the hydrogen storage tank through a hydrogen recovery pipeline, the pressure device is connected to the hydrogen transmission pipeline through a first pressure pipeline, and the pressure device is also connected to the gas channel through a second pressure pipeline; a first valve and a second valve are respectively provided on the hydrogen transmission pipelines on both sides of the first pressure pipeline, and a third valve and a fourth valve are respectively provided on the gas channels on both sides of the second pressure pipeline.

[0011] The beneficial effects of the present invention are as follows: the present invention provides a feasible hydrogen reduction water production device with a small size, low cost, simple structure, and long device life. It can effectively separate and purify reaction minerals, efficiently utilize and recover hydrogen, and achieve satisfactory water vapor condensation and collection. Lunar soil is delivered to the entire device from the feed port via external equipment. After passing through a screening device, the lunar soil particles that meet the screening requirements fall and pass through a magnetic separation device to separate magnetic minerals from non-magnetic minerals. The magnetic material is collected in a heating device and heated to 800-900°C. Hydrogen is introduced simultaneously. During the heating process, the magnetic material ilmenite in the lunar soil undergoes a reduction reaction with hydrogen to produce water. After the reaction is complete, the gaseous water and hydrogen are separated and collected through a condenser. The excess hydrogen is recollected into a hydrogen storage tank through a circulation pipeline. The entire process has a high degree of automation, a simple structure, low energy consumption, and high resource utilization. The feasible hydrogen reduction water production device of the present invention can operate under the special lunar surface environment (high and low temperature, vacuum, and weak gravity), providing essential water resources for long-term human activities on the moon.

[0012] On the basis of the above technical solution, the present invention can also be improved as follows.

[0013] Furthermore, the magnetic separation device includes a magnetic separation shell, a cylinder, a rotating motor and a magnetic system. The screening device is installed at the upper end of the magnetic separation shell and is connected to the interior of the magnetic separation shell; the cylinder is rotatably connected in the magnetic separation shell and the axis of the cylinder is arranged horizontally. The driving end of the rotating motor is fixedly connected to the center of one axial end of the cylinder and drives the cylinder to rotate. The magnetic system is installed on the inner wall of the cylinder. A brush is also provided on the inner wall of the magnetic separation shell, and the brush is affixed to the outer wall of the cylinder; a magnetic material outlet is provided at the bottom of the magnetic separation shell, and the magnetic material outlet is located below the brush and is connected to the heating chamber of the heating device through a magnetic material pipe.

[0014] The beneficial effect of adopting the above further scheme is that the magnetic material in the lunar soil can be adsorbed on the cylinder by rotating the motor, and then the magnetic material can be brushed off with a brush and enter the heating chamber of the heating device through the magnetic material outlet.

[0015] Furthermore, a separation plate is fixed on the bottom inner wall of the magnetic separation shell. The separation plate is located below the side of the cylinder away from the magnetic material outlet and can rotate around the lower end in a direction close to or away from the cylinder.

[0016] The beneficial effect of adopting the above further solution is that the yield of magnetic products and non-magnetic products can be adjusted by adjusting the position of the separation plate.

[0017] Furthermore, a non-magnetic material outlet is provided at the bottom of the magnetic separation shell, and the non-magnetic material outlet is connected to the waste box through a non-magnetic material pipe.

[0018] The beneficial effect of adopting the above further solution is that the non-magnetic material can be thrown into the non-magnetic material outlet on the other side of the ore separation plate by rotating the cylinder.

[0019] Furthermore, the non-magnetic material outlet and the magnetic material outlet are both funnel-shaped structures.

[0020] The beneficial effect of adopting the above further solution is that it is convenient to discharge the magnetic material and the non-magnetic material.

[0021] Furthermore, the screening device includes a screening shell and a conical screen, a receiving hopper is provided at the bottom of the screening shell, a feeding hopper is provided at the top of the screening shell, and a sealing cover is hinged at the top of the screening shell for sealing the feeding hopper; the feeding hopper and the conical screen are arranged up and down inside the screening shell, the receiving hopper is located outside the screening shell, and a coarse particle discharge port is provided at a position corresponding to the lower end of the screening shell and the conical screen, and the coarse particle discharge port is covered with an annular cover that can move up and down to open or close the coarse particle discharge port.

[0022] The beneficial effect of adopting the above further solution is that the coarse particles can be screened out by using the cone screen and then discharged through the coarse particle discharge port.

[0023] Furthermore, a first molecular sieve filter plate is provided at the bottom of the heating chamber of the heating device, a ventilation gap is reserved between the first molecular sieve filter plate and the bottom wall of the heating chamber, and the ventilation gap is connected to the condensing device through a gas channel.

[0024] The beneficial effect of adopting the above further solution is that the molecular sieve filter plate can pass hydrogen and water vapor, while the magnetic material remains in the heating chamber.

[0025] Furthermore, a gas through hole is opened on the top of the heating device, and the gas through hole is covered with a second molecular sieve filter plate. The hydrogen storage tank is connected to the gas through hole through a hydrogen transmission pipeline.

[0026] The beneficial effect of adopting the above further solution is to prevent magnetic substances from entering the hydrogen storage tank.

[0027] Furthermore, the condensation chamber of the condensation device is conical, and a downwardly inclined micro-channel is provided on the inner side wall of the condensation chamber; and a water collecting device connected to the lower end of the micro-channel is provided at the bottom of the condensation device.

[0028] The beneficial effect of adopting the above further solution is that, by providing micro-channels, water vapor can be condensed and flow into the water collecting device along the micro-channels.

[0029] A method for producing water by hydrogen reduction of lunar soil is implemented using the above-mentioned lunar soil hydrogen reduction water production device, comprising the following steps:

[0030] S1, adding lunar soil to the screening device for screening, the screened lunar soil enters the magnetic separation device, and the magnetic material screened by the magnetic separation device enters the heating chamber of the heating device;

[0031] S2, after the magnetic material in the heating chamber reaches a preset amount, the first valve near the hydrogen storage tank and the third valve near the heating chamber are opened, and the hydrogen in the hydrogen storage tank is transported from the bottom of the heating chamber to the heating chamber for reaction using a pressure device;

[0032] S3, after all the hydrogen in the hydrogen storage tank is input into the heating chamber, the first valve is closed and the second valve close to the heating chamber is opened. The pressure device is used to continuously circulate the hydrogen and the generated water vapor into the bottom of the heating device to perform the reduction reaction;

[0033] S4, after the reaction is completed, close the third valve and open the fourth valve close to the condensing device, so that the water vapor in the heating chamber enters the condensing device for condensation, and the hydrogen in the heating chamber enters the hydrogen storage tank for recovery.

[0034] The beneficial effects of the present invention are: the lunar soil hydrogen reduction water production method of the present invention has a high degree of automation in the entire process, a simple structure, low energy consumption, and a high resource utilization rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is a schematic diagram of the structure of the lunar soil hydrogen reduction water production device of the present invention.

[0036] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0037] 1. Hydrogen storage tank; 11. Hydrogen transmission pipeline; 12. Sixth valve; 13. Seventh valve; 14. Hydrogen recovery pipeline;

[0038] 2. Screening device; 21. Sealing cover; 22. Feed hopper; 23. Conical screen; 24. Ring cover; 25. Receiver hopper; 26. Fifth valve; 27. Screening housing;

[0039] 3. Magnetic separation housing; 31. Magnetic system; 32. Cylinder; 33. Separation plate; 34. Brush; 35. Vibration motor; 36. Rotation motor; 38. Magnetic material outlet; 37. Non-magnetic material outlet; 39. Waste box;

[0040] 4. Heating device; 41. Eighth valve; 42. Heating layer; 43. Insulation layer; 44. Heating chamber; 45. First molecular sieve filter plate; 46. Second valve; 47. Second molecular sieve filter plate;

[0041] 5. Pressure device; 51. Circulation pump; 52. First valve; 53. Gas channel; 54. Third valve; 55. First pressure pipeline; 56. Second pressure pipeline;

[0042] 6. Condensation device; 61. Condensation chamber; 62. Refrigeration device; 63. Water collection device; 65. Liquid level detection device; 66. Fourth valve. DETAILED DESCRIPTION

[0043] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0044] Example 1

[0045] like Figure 1As shown, a lunar soil hydrogen reduction water production device in this embodiment includes a screening device 2, a magnetic separation device, a heating device 4, a pressure device 5, a condensing device 6, a vibration device and a hydrogen storage tank 1. The screening device 2 is connected to the magnetic separation device and transports the screened lunar soil to the magnetic separation device. The magnetic separation device is connected to the heating device 4 and inputs the magnetic material into the heating chamber 44 of the heating device 4. The magnetic separation device is installed at the vibration end of the vibration device; the hydrogen storage tank 1 is connected to the top of the heating device 4 through a hydrogen transmission pipeline 11, the bottom of the heating device 4 is connected to the condensing device 6 through a gas channel 53, and the top of the condensing device 6 is connected to the hydrogen storage tank 1 through a hydrogen recovery pipeline 14. The pressure device 5 is connected to the hydrogen transmission pipeline 11 through a first pressure pipeline 55, and the pressure device 5 is also connected to the gas channel 53 through a second pressure pipeline 56; a first valve 52 and a second valve 46 are respectively provided on the hydrogen transmission pipeline 11 on both sides of the first pressure pipeline 55, and a third valve 54 and a fourth valve 66 are respectively provided on the gas channel 53 on both sides of the second pressure pipeline 56.

[0046] The hydrogen storage tank 1 is a cylindrical structure. The hydrogen recovery pipe 14 is further provided with a sixth valve 12 and a seventh valve 13. The sixth valve 12 is located near the top of the condensing device 6, and the seventh valve 13 is located near the top of the hydrogen storage tank 1. The sixth valve 12 is a pressure valve device that maintains a stable pressure in the condensing device 6 and recovers the released hydrogen back into the hydrogen storage tank. The vibration device can be a vibration motor 35. The pressure device 5 can be a circulating pump.

[0047] Specifically, such as Figure 1 As shown, the heating device 4 includes a heating layer 42 and a heat insulating layer 43. The heating layer 42 is fixed closely to the outer wall of the heating chamber 44. The heat insulating layer 43 is sleeved on the outer wall of the heating layer 42 to prevent heat from diffusing outward. The heating layer 42 can be a resistance wire structure and an external power supply. The heating chamber 44 can optionally have a cylindrical structure.

[0048] like Figure 1As shown, the magnetic separation device of this embodiment includes a magnetic separation housing 3, a cylinder 32, a rotating motor 36, and a magnetic system 31. The screening device is mounted at the upper end of the magnetic separation housing 3 and communicates with the interior of the magnetic separation housing 3. The cylinder 32 is rotatably connected to the magnetic separation housing 3, with its axis arranged horizontally. The driving end of the rotating motor 36 is fixedly connected to the center of one axial end of the cylinder 32 and drives the cylinder 32 to rotate. The magnetic system 31 is mounted on the inner sidewall of the cylinder 32. A brush 34 is also provided on the inner sidewall of the magnetic separation housing 3, which abuts against the outer sidewall of the cylinder 32. A magnetic material outlet 38 is provided at the bottom of the magnetic separation housing 3. The magnetic material outlet 38 is located below the brush 34 and communicates with the heating chamber 44 of the heating device 4 through a magnetic material pipe. The rotating motor can adsorb magnetic material in the lunar soil onto the cylinder, which is then brushed off by the brush and enters the heating chamber of the heating device through the magnetic material outlet. The magnetic separation device carried out mineral separation and purification of the lunar soil, improving the overall water production efficiency of the device.

[0049] Wherein, an eighth valve 41 is provided on the magnetic material pipeline for controlling the on-off of the magnetic material pipeline.

[0050] like Figure 1 As shown, a separation plate 33 is further fixed to the bottom inner wall of the magnetic separation housing 3 of this embodiment. The separation plate 33 is arranged obliquely and is located below the side of the cylinder 32 away from the magnetic material outlet 38. It can rotate around the lower end in a direction close to or away from the cylinder 32. After screening, the lunar soil is directly fed to the cylinder of the magnetic separation device. The magnetic material is adsorbed on the cylinder or attracted to one side of the cylinder due to the strong magnetic force. When it rotates to an area with weak magnetic field strength, it falls by itself or is brushed away from the cylinder by a brush. After a sufficient amount of magnetic material is collected, it enters the heating chamber 44 of the heating device 4 through a valve. The weakly magnetic or non-magnetic particles are mainly thrown to the non-magnetic material outlet due to the centrifugal force and gravity. The separation yield of magnetic products and non-magnetic minerals can be adjusted by adjusting the rotation speed of the separation cylinder and the position of the separation plate.

[0051] like Figure 1 As shown, the bottom of the magnetic separation housing 3 of this embodiment is also provided with a non-magnetic material outlet 37, which is connected to the waste box 39 through a non-magnetic material pipe. The non-magnetic material can be thrown into the non-magnetic material outlet on the other side of the separation plate by rotating the cylinder.

[0052] like Figure 1 As shown, the non-magnetic material outlet 37 and the magnetic material outlet 38 of this embodiment are both funnel-shaped structures, which facilitate the discharge of magnetic and non-magnetic materials.

[0053] like Figure 1As shown, the screening device 2 of this embodiment includes a screening housing 27 and a conical screen 23. A receiving hopper 25 is provided at the bottom of the screening housing 27, and a feed hopper 22 is provided at the top of the screening housing 27. A sealing cover 21 is also hinged to the top of the screening housing 27 to seal the feed hopper 22. The feed hopper 22 and the conical screen 23 are arranged vertically inside the screening housing 27, and the receiving hopper 25 is located outside the screening housing 27. A coarse particle discharge port is provided at a position corresponding to the lower end of the screening housing 27 and the conical screen 23. The coarse particle discharge port is covered with an annular cover 24 that can move up and down to open or close the coarse particle discharge port. The coarse particles can be screened out using the conical screen and then discharged through the coarse particle discharge port. A fifth valve 26 is also provided at the bottom of the receiving hopper 25 to control the on / off of the bottom of the receiving hopper 25. The annular cover 24 can be manually or electrically raised and lowered. The sieve diameter of the conical sieve 23 can be selected according to needs, for example, 50 μm, 60 μm, etc., or other sieve diameters can be selected.

[0054] like Figure 1 As shown, a first molecular sieve filter plate 45 is provided at the bottom of the heating chamber 44 of the heating device 4 of this embodiment. A ventilation gap is reserved between the first molecular sieve filter plate 45 and the bottom wall of the heating chamber 44. The ventilation gap is connected to the condensing device 6 via a gas channel 53. The molecular sieve filter plate allows hydrogen and water vapor to pass through, while retaining magnetic substances in the heating chamber.

[0055] like Figure 1 As shown, the top of the heating device 4 of this embodiment is provided with a gas through hole, which is covered with a second molecular sieve filter plate 47. The hydrogen storage tank 1 is connected to the gas through hole via a hydrogen transmission pipeline 11. The second molecular sieve filter plate also allows only hydrogen and water vapor to pass through, preventing magnetic substances from entering the hydrogen storage tank.

[0056] like Figure 1As shown, the condensing chamber 61 of the condensing device 6 of this embodiment is conical, and a downwardly inclined micro-channel is provided on the inner side wall of the condensing chamber 61; a water collecting device 63 connected to the lower end of the micro-channel is provided at the bottom of the condensing device 6. By providing the micro-channel, water vapor can be condensed and flow along the micro-channel into the water collecting device 63. The water collecting device 63 is a closed collection structure. A refrigeration device 62 is provided on the outer wall of the condensing device 6 for cooling the condensing chamber 61 within the refrigeration device 62. The refrigeration device 62 can be implemented using an existing refrigeration device. The refrigeration device 62 surrounds the condensing chamber 61, and a refrigerant circulates therein to maintain a refrigeration temperature of 2-8°C. A liquid level detection device 65 is provided in the water collecting device 63 for detecting the liquid level within the water collecting device 63. The liquid level detection device 65 can be a liquid level gauge, etc. The micro-channel can adopt a micron-level needle-shaped structure surface and be treated with a super-hydrophobic coating to promote the condensation of water vapor. The condensing device 6 of this embodiment mainly consists of a conical condensing chamber, a condensing chamber refrigeration device, a water collection device, a sixth valve, and a liquid level detection device. The conical condensing chamber is made of lightweight aluminum alloy material to form a "funnel" condensing chamber. The funnel is processed with a micron-level "needle-shaped" structure surface and treated with a super-hydrophobic coating to promote the condensation of water vapor. Under the action of lunar gravity, the droplets detach from the condensing surface to achieve water vapor collection. The condensing chamber refrigeration device uses a set of heat pipe devices to maintain a refrigeration temperature of 2-8°C, enhancing water condensation and collection. The water collection device is made of lightweight aluminum alloy material to form a sealed water collector and is connected to the condensing chamber outlet. A liquid level detection device is set inside the water collector to monitor and transmit the water collection amount in real time. The sixth valve ensures that the condensing chamber and the collector maintain a stable pressure condition within a certain stable range. A set of pressure control valves can be set on the side walls of the condensing chamber to control the pressure stability in the condensing chamber and the collector. The liquid level detection device is used to indicate the water level.

[0057] In this embodiment, a lunar soil hydrogen reduction water production device is provided, wherein a heating device is installed at the lower end of a magnetic separation device, and a condensing device is installed on the right side of the heating device; lunar soil samples are sent to a screening device through a feed port, and are first screened by the screening device, and small lunar soil particles that meet the screening requirements fall into the magnetic separation device. Due to the magnetic differences of the minerals, the resultant forces of the magnetic and mechanical forces acting on various mineral particles are different, resulting in different motion trajectories; the magnetic particles fall into the heating device, and hydrogen is introduced into the heating device from the bottom by a pressurizing device, so that the mineral particles are heated and a reduction reaction occurs, and the generated gaseous water and hydrogen are collected by a condensing device, and the water is collected after condensation, and the excess hydrogen is refluxed by a circulating pressure pump for reuse; the entire process is simple and efficient, with a simple structure and a high hydrogen utilization rate, and can realize the in-situ preparation of water resources on the lunar surface.

[0058] Example 2

[0059] This embodiment also provides a method for producing water by hydrogen reduction of lunar soil, which is implemented using the lunar soil hydrogen reduction water production device of the above embodiment 1, and includes the following steps:

[0060] S1, lunar soil is heated in the screening device 2 for screening. The screened lunar soil enters the magnetic separation device. The magnetic material screened by the magnetic separation device enters the heating chamber 44 of the heating device 4;

[0061] S2, after the magnetic material in the heating chamber 44 reaches a preset amount, the first valve 52 near the hydrogen storage tank 1 and the third valve 54 near the heating chamber 44 are opened, and the pressure device 5 is used to transport the hydrogen in the hydrogen storage tank 1 from the bottom of the heating chamber 44 into the heating chamber 44 for reaction; wherein the heating device can be heated at all times or during the reaction;

[0062] S3, after all the hydrogen in the hydrogen storage tank 1 is input into the heating chamber 44, the first valve 52 is closed, and the second valve 46 near the heating chamber 44 is opened. The pressure device 5 is used to circulate the hydrogen and the generated water vapor and enter from the bottom of the heating device 4 to perform the reduction reaction;

[0063] S4, after the reaction is completed, close the third valve 54, open the fourth valve 66 close to the condensing device 6, so that the water vapor in the heating chamber 44 enters the condensing device 6 for condensation, and the hydrogen in the heating chamber 44 enters the hydrogen storage tank 1 for recovery.

[0064] Example 3

[0065] External equipment delivers the lunar soil to the feed hopper 22, closes the sealing cover 21, closes the eighth valve 41 and the fifth valve 26, and the vibration motor 35 starts to vibrate. The lunar soil particles begin to roll from the top of the conical screen 23 to the bottom, and the fine particles pass through the sieve holes into the receiving hopper 25, and the coarse particles roll to the coarse particle discharge port. After screening for a period of time, the annular cover 24 is opened to discharge the coarse particles directly.

[0066] After screening is complete, the coarse particle discharge port is closed and the fifth valve 26 is opened. By controlling the flow rate of the fifth valve 26, the fine particles are allowed to flow slowly into the magnetic separation device. At this time, the rotating motor 36 drives the cylinder 32 to rotate counterclockwise, and the magnetic system 31 is fixed inside the cylinder and does not move. The magnetic ilmenite in the fine particles is attracted to the surface of the cylinder by the magnetic force of the magnetic system 31 and begins to fall with the cylinder to the weakest point of magnetic force, or is scraped off the cylinder by the brush 34 and collected at the magnetic material outlet 38 on the right. Other non-magnetic minerals in the fine particles are not affected by the magnetic force and are directly thrown to the non-magnetic material outlet 37 on the left. They fall into the waste box 39 due to the vibration.

[0067] After the magnetic separation is completed, the eighth valve 41 is opened, and the fine ilmenite particles enter the heating chamber 44 under the action of the vibration motor 35. After all the particles have entered, the eighth valve 41 is closed. The first valve 52 and the third valve 54 are opened, and the circulation pump 51 is started. All the hydrogen in the hydrogen storage tank enters the heating chamber 44 from the bottom of the heating device 4. Then the first valve 52 is closed, and the second valve 46 is opened, and the heating device begins to heat. The first molecular sieve filter plate 45 and the second molecular sieve filter plate at the second valve 46 both allow gas molecules to pass through. Therefore, hydrogen and water vapor generated by the reaction are continuously circulated into the heating device. The heating layer 42 can also heat the hydrogen in the gas channel 53 in advance, thereby improving the reaction efficiency and further vaporizing the water to prevent condensation.

[0068] After the chemical reaction is completed, the third valve 54 is closed, the fourth valve 66 and the seventh valve 13 are opened, and water and hydrogen enter the condensing device 6. The refrigeration device 62 outside the condensing chamber is maintained at a refrigeration temperature of 2-8 ° C by a set of heat pipe devices. The condensing chamber 61 of the conical structure adopts a light aluminum alloy material to process a "funnel" type condensing chamber, and processes a micron-level "needle-shaped" structure surface inside the funnel, and carries out super-hydrophobic coating treatment to promote the condensation of water vapor. The water collecting device 63 adopts a light aluminum alloy material to process a closed water collector and is connected to the condensing chamber outlet. A liquid level detection device 65 is arranged inside the water collector to monitor and transmit the water collection amount in real time. The sixth valve 12 ensures that a stable pressure condition of a certain stable range needs to be maintained in the condensing chamber 61 and the water collecting device 63. It is mainly a pressure control valve, and the valve outlet is connected to the hydrogen recovery pipeline 14.

[0069] Due to the pressure difference between the condensing device 6 and the hydrogen storage tank 1, excess unreacted hydrogen enters the hydrogen storage tank under the pressure of the circulation pump 51 and is stored, and can be used for the next water production operation.

[0070] The present invention provides a feasible hydrogen reduction water production device and method, characterized by a small size, low cost, simple structure, and long device life. These devices can effectively separate and purify reactive minerals, efficiently utilize and recover hydrogen, and achieve satisfactory water vapor condensation and collection. Lunar soil is delivered to the device from an external device through a feed port. After passing through a screening device, the lunar soil particles that meet the screening criteria fall down and pass through a magnetic separation device to separate magnetic and non-magnetic minerals. The magnetic material is collected in a heating device, heated to 600-800°C, while hydrogen is introduced. During the heating process, the magnetic ilmenite in the lunar soil undergoes a reduction reaction with the hydrogen to produce water. After the reaction is complete, the gaseous water and hydrogen are separated and collected through a condenser. Excess hydrogen is then collected back into a hydrogen storage tank via a circulation pipeline. The entire process is highly automated, simple in structure, consumes little energy, and achieves high resource utilization.

[0071] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0072] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0073] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0074] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0075] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification and features of different embodiments or examples without contradiction.

[0076] Although the embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and are not to be construed as limitations on the present invention. A person skilled in the art may change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A lunar soil hydrogen reduction water production device, characterized in that: It includes a screening device, a magnetic separation device, a heating device, a pressure device, a condensing device, a vibration device and a hydrogen storage tank. The screening device is connected to the magnetic separation device and transports the screened lunar soil to the magnetic separation device. The magnetic separation device is connected to the heating device and inputs the magnetic material into the heating chamber of the heating device. The magnetic separation device is installed at the vibration end of the vibration device; the hydrogen storage tank is connected to the top of the heating device through a hydrogen transmission pipeline, the bottom of the heating device is connected to the condensing device through a gas channel, the top of the condensing device is connected to the hydrogen storage tank through a hydrogen recovery pipeline, the pressure device is connected to the hydrogen transmission pipeline through a first pressure pipeline, and the pressure device is also connected to the gas channel through a second pressure pipeline; a first valve and a second valve are respectively provided on the hydrogen transmission pipelines on both sides of the first pressure pipeline, and a third valve and a fourth valve are respectively provided on the gas channels on both sides of the second pressure pipeline.

2. The lunar soil hydrogen reduction water production device according to claim 1, characterized in that: The magnetic separation device includes a magnetic separation shell, a cylinder, a rotating motor and a magnetic system. The screening device is installed at the upper end of the magnetic separation shell and is connected to the interior of the magnetic separation shell; the cylinder is rotatably connected in the magnetic separation shell and the axis of the cylinder is arranged horizontally. The driving end of the rotating motor is fixedly connected to the center of one axial end of the cylinder and drives the cylinder to rotate. The magnetic system is installed on the inner wall of the cylinder. A brush is also provided on the inner wall of the magnetic separation shell, and the brush is abutted against the outer wall of the cylinder; a magnetic material outlet is provided at the bottom of the magnetic separation shell, and the magnetic material outlet is located below the brush and is connected to the heating chamber of the heating device through a magnetic material pipeline.

3. The lunar soil hydrogen reduction water production device according to claim 2, characterized in that: A separation plate is also provided on the bottom inner wall of the magnetic separation shell. The separation plate is arranged obliquely and is located below the side of the cylinder away from the magnetic material outlet. It can rotate around the lower end in a direction close to or away from the cylinder.

4. The lunar soil hydrogen reduction water production device according to claim 2, characterized in that: A non-magnetic material outlet is also provided at the bottom of the magnetic separation shell, and the non-magnetic material outlet is communicated with the waste box through a non-magnetic material pipeline.

5. The lunar soil hydrogen reduction water production device according to claim 4, characterized in that: The non-magnetic material outlet and the magnetic material outlet are both funnel-shaped structures.

6. The lunar soil hydrogen reduction water production device according to any one of claims 1 to 5, characterized in that: The screening device includes a screening shell and a conical screen. A receiving hopper is provided at the bottom of the screening shell, a feeding hopper is provided at the top of the screening shell, and a sealing cover is hinged at the top of the screening shell to seal the feeding hopper. The feeding hopper and the conical screen are arranged up and down inside the screening shell, and the receiving hopper is located outside the screening shell. A coarse particle discharge port is provided at a position corresponding to the lower end of the screening shell and the conical screen. The coarse particle discharge port is covered with an annular cover that can move up and down to open or close the coarse particle discharge port.

7. The lunar soil hydrogen reduction water production device according to any one of claims 1 to 5, characterized in that: A first molecular sieve filter plate is provided at the bottom of the heating chamber of the heating device. A ventilation gap is reserved between the first molecular sieve filter plate and the bottom wall of the heating chamber. The ventilation gap is connected to the condensing device through a gas channel.

8. The lunar soil hydrogen reduction water production device according to any one of claims 1 to 5, characterized in that: A gas through hole is provided on the top of the heating device, and the gas through hole is covered with a second molecular sieve filter plate. The hydrogen storage tank is connected to the gas through hole through a hydrogen transmission pipeline.

9. The lunar soil hydrogen reduction water production device according to any one of claims 1 to 5, characterized in that: The condensation chamber of the condensation device is conical, and a downwardly inclined micro-channel is provided on the inner side wall of the condensation chamber; a water collecting device connected to the lower end of the micro-channel is provided at the bottom of the condensation device.

10. A method for producing water by hydrogen reduction of lunar soil, characterized in that: The method is implemented using the lunar soil hydrogen reduction water production device according to any one of claims 1 to 9, comprising the following steps: S1, heating lunar soil in a screening device for screening, the screened lunar soil enters a magnetic separation device, and the magnetic material screened by the magnetic separation device enters a heating chamber of a heating device; S2, after the magnetic material in the heating chamber reaches a preset amount, the first valve near the hydrogen storage tank and the third valve near the heating chamber are opened, and the hydrogen in the hydrogen storage tank is transported from the bottom of the heating chamber to the heating chamber for reaction using a pressure device; S3, after all the hydrogen in the hydrogen storage tank is input into the heating chamber, the first valve is closed and the second valve close to the heating chamber is opened. The pressure device is used to continuously circulate the hydrogen and the generated water vapor into the bottom of the heating device to perform the reduction reaction; S4, after the reaction is completed, close the third valve and open the fourth valve close to the condensing device, so that the water vapor in the heating chamber enters the condensing device for condensation, and the hydrogen in the heating chamber enters the hydrogen storage tank for recovery.

Images