A kiln for producing hydrogen by thermal reaction of water vapor and metal minerals

Abstract

The present invention relates to the technical field of hydrogen production by kilns, and discloses a kiln for producing hydrogen by thermal reaction of water vapor and metal minerals, comprising a furnace body; a furnace cover; an exhaust pipe for draining the generated hydrogen; a processing component for preparing hydrogen by contact reaction of metal minerals with water vapor; the processing component comprises a powered turbulence device, a film removal device and an impurity removal device. The kiln for producing hydrogen by thermal reaction of water vapor and metal minerals realizes a chemical reaction between metal magnesium and an aqueous solution by spiral airflow impact contact between the arranged magnesium rod and water vapor, thereby realizing the process of hydrogen production. The up and down reciprocating circulation action of the cleaning device can realize automatic cleaning of the surface of the magnesium rod, thereby removing oxides or reaction impurities on the surface, ensuring that metal magnesium always exists on the surface of the magnesium rod to directly react with water vapor or water to realize hydrogen production, thereby improving the overall hydrogen production efficiency, and does not require manual operation by the operator, which is simple and convenient.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen production by kilns, and in particular to a kiln for producing hydrogen by thermal reaction of water vapor and metal minerals. Background Art

[0002] Hydrogen production is the process of producing hydrogen. Hydrogen energy is a secondary energy source. In the long run, the most promising method is to produce hydrogen from water. The raw materials are inexhaustible, and hydrogen will generate water after burning to release energy, which will not cause environmental pollution. Commonly used hydrogen production methods include: hydrogen production from various mineral fuels, hydrogen production from water electrolysis, hydrogen production from biomass, hydrogen production from other hydrogen-combining substances, and recovery of hydrogen produced as a byproduct of various chemical processes.

[0003] At present, in the process of using minerals to produce hydrogen, water vapor or water flow is used to act on the surface of metal minerals to carry out chemical reactions. For example, magnesium metal will react with water to produce magnesium hydroxide and hydrogen. In the prior art, the hydrogen production basically uses magnesium powder to react with water or atomized water vapor to generate hydrogen. However, in the above-mentioned reaction of metal minerals with water or water vapor, there is actually an oxide film on the surface of the metal minerals, or a protective film is also generated on the surface of the metal minerals as the initial reaction occurs. Therefore, the existing technology has the following defects in the process of hydrogen production: First, the presence of oxide films on the surface of metal minerals affects the reaction rate between metal minerals and aqueous solutions and water vapor, ultimately leading to a decrease in hydrogen production efficiency; Secondly, the method of metal powder delivery requires the consumption of magnesium powder to be replenished from time to time, which is time-consuming and labor-intensive, and also reduces the efficiency of hydrogen production. Thirdly, in the process of hydrogen production from metal minerals, impurities are inside the kiln, which needs to be cleaned and removed from time to time, which will undoubtedly cause time-consuming and labor-intensive operations for operators. Therefore, a kiln for hydrogen production by thermal reaction of water vapor and metal minerals is proposed to solve the above-mentioned problems. Summary of the invention

[0004] Technical issues solved In view of the shortcomings of the prior art, the present invention provides a kiln for producing hydrogen by thermal reaction of water vapor and metal minerals, which solves the problems of low efficiency, time-consuming and labor-intensive hydrogen production from metal minerals in the prior art.

[0005] (II) Technical solution To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a kiln for producing hydrogen by thermal reaction of water vapor and metal minerals, comprising a furnace body; a furnace cover; an exhaust pipe for draining the generated hydrogen; a processing component for preparing hydrogen by contact reaction of metal minerals with water vapor; the processing component comprises a dynamic turbulence device, a film removal device and an impurity removal device; the dynamic turbulence device is used to change the airflow direction of water vapor entering the furnace body; the film removal device is used to clean the oxide film or chemical reaction impurities on the surface of the metal mineral; the impurity removal device is used to automatically discharge the chemical reaction impurities inside the furnace body; the furnace cover is arranged on the furnace body, and the exhaust pipe is connected to the furnace cover.

[0006] Preferably, an inner cavity is provided inside the furnace body, and a plurality of heating rods are installed on the inner wall of the inner cavity for controlling the temperature inside the furnace body.

[0007] Preferably, the dynamic spoiler device includes an inner furnace, which is arranged inside the furnace body, and an air flow groove is arranged inside the inner furnace. An air intake pipe is connected to the inner furnace, one end of the air intake pipe passes through the furnace body and is connected to an external steam generator, and the other end of the air intake pipe is connected to the air flow groove, and a spiral tube is arranged inside the air flow groove.

[0008] Preferably, the film removal device includes a rotating ring, which is rotatably connected to the inner furnace, a plurality of blades are arranged on the surface of the rotating ring, and the blades are located inside the air flow groove, a spiral rod is connected to the axial position of the rotating ring, a spiral groove is opened on the surface of the spiral rod, a sliding pin is slidably connected to the spiral groove, a sleeve is connected to the sliding pin, a disc is connected to the surface of the sleeve, and a cleaning device is arranged on the disc.

[0009] Preferably, a plurality of step grooves are provided on the rotating ring, a magnesium rod is inserted into the step grooves, a locking pin for positioning the magnesium rod up and down is clamped on the step grooves, a guide rod is slidably connected to the disc, a bottom plate is connected to the bottom of the guide rod, and the bottom plate is fixed inside the inner furnace.

[0010] Preferably, the cleaning device includes a circular sleeve, on which two lower plug plates and two upper plug plates are inserted, the opposing surfaces of the upper plug plates and the lower plug plates abut against the surface of the magnesium rod, the upper plug plates and the lower plug plates are both provided with spring grooves, arc springs are sleeved on the spring grooves, the bottom of the circular sleeve is connected to a movable sleeve, and a card slot is provided on the movable sleeve.

[0011] Preferably, a plurality of cleaning devices are provided, and the plurality of cleaning devices are distributed in a circular array at the center position of the rotating ring, and the discs are located in the slots on the four movable sleeves.

[0012] Preferably, the impurity removal device includes a bearing sleeve, the surface of the bearing sleeve is connected to a cleaning rod, the bottom of the inner furnace is a conical structure, and the surface of the cleaning rod is in contact with the bottom wall of the inner furnace, and a feed port is opened at the bottom of the inner furnace.

[0013] (III) Beneficial effects Compared with the prior art, the present invention provides a kiln for producing hydrogen by thermal reaction of water vapor and metal minerals, which has the following beneficial effects: 1. The kiln for hydrogen production by thermal reaction of water vapor and metal minerals realizes the chemical reaction of metal magnesium and aqueous solution by spiral airflow impact contact between the magnesium rod and water vapor, thereby realizing the process of hydrogen production. The up and down reciprocating cycle action of the cleaning device can automatically clean the surface of the magnesium rod, thereby removing the oxide or reaction impurities on the surface, ensuring that there is always metal magnesium on the surface of the magnesium rod to directly react with water vapor or water to achieve hydrogen production, thereby improving the overall hydrogen production efficiency, without the need for manual operation by the operator, and is simple and convenient.

[0014] 2. The kiln for producing hydrogen by thermal reaction of water vapor and metal minerals can provide inward extrusion force for the upper plug plate and the lower plug plate through the arc spring. Therefore, as the metal magnesium on the surface of the magnesium rod is gradually consumed, the arc spring will also shrink, controlling the upper plug plate and the lower plug plate to always be in contact with the magnesium rod, ensuring the long-term cleaning of the magnesium rod surface.

[0015] 3. The kiln for producing hydrogen by thermal reaction of water vapor and metal minerals can rotary clean the impurities cleaned by the cleaning device through the impurity removal device, and discharge them from the discharge port, so that they are automatically discharged from the inner furnace, thereby avoiding the need for manual irregular cleaning of the kiln and realizing automatic control of hydrogen production in the kiln. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of a kiln for producing hydrogen by thermal reaction of water vapor and metal minerals proposed by the present invention; Figure 2 This is a schematic diagram of the overall cross-sectional structure of a kiln for producing hydrogen by thermal reaction of water vapor and metal minerals proposed by the present invention; Figure 3 This is a schematic diagram of the structure of a processing component of a kiln for producing hydrogen by thermal reaction of water vapor and metal minerals proposed by the present invention; Figure 4 This is a schematic diagram of the structure of a power disturbance device for a kiln for hydrogen production by thermal reaction of water vapor and metal minerals proposed by the present invention; Figure 5 This is a schematic diagram of the structure of a film removal device for a kiln for hydrogen production by thermal reaction of water vapor and metal minerals proposed by the present invention; Figure 6This is a schematic diagram of the structure of a cleaning device for a kiln for producing hydrogen by thermal reaction of water vapor and metal minerals proposed by the present invention; Figure 7 This is a schematic diagram of the structure of the impurity removal device of a kiln for producing hydrogen through thermal reaction of water vapor and metal minerals proposed by the present invention.

[0017] In the figure: 1, furnace body; 2, furnace cover; 3, air outlet pipe; 4, processing assembly; 41, power spoiler; 411, air inlet pipe; 412, inner furnace; 413, spiral pipe; 414, air flow groove; 415, latch; 416, disc gear; 417, step groove; 42, film removal device; 421, spiral rod; 422, spiral groove; 423, collar; 424, sliding pin; 425, disc; 426, guide rod; 427, bottom plate; 428, cleaning device; 4281 , round sleeve; 4282, lower plug plate; 4283, upper plug plate; 4284, arc spring; 4285, movable sleeve; 4286, slot; 429, magnesium rod; 430, rotating ring; 43, debris removal device; 431, bearing sleeve; 432, cleaning rod; 433, feed port; 434, guide sleeve; 435, lifting sleeve; 436, rotating rod; 437, spiral blade; 438, pinion; 439, reflux pipe; 440, discharge pipe; 5, inner cavity; 6, heating rod. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1-Figure 7 A kiln for producing hydrogen by thermal reaction of water vapor and metal minerals, comprising a furnace body 1; a furnace cover 2; an exhaust pipe 3 for draining the generated hydrogen; a processing component 4 for preparing hydrogen by contact reaction between metal minerals and water vapor; the processing component 4 comprises a dynamic turbulence device 41, a film removal device 42 and an impurity removal device 43; the dynamic turbulence device 41 is used to change the airflow direction of water vapor entering the furnace body 1; the film removal device 42 is used to clean the oxide film or chemical reaction impurities on the surface of the metal mineral; the impurity removal device 43 is used to automatically discharge the chemical reaction impurities inside the furnace body 1; the furnace cover 2 is arranged on the furnace body 1, and the exhaust pipe 3 is connected to the furnace cover 2.

[0020] In this embodiment, the furnace body 1 is provided with an inner cavity 5, and a plurality of heating rods 6 are installed on the inner wall of the inner cavity 5 for controlling the temperature inside the furnace body 1. The temperature inside the furnace body 1 can be adjusted by the provided heating rods 6 to avoid low-temperature condensation of water vapor when entering the inner furnace 412. In addition, the high temperature state can also increase the reaction rate of liquid water and mineral magnesium.

[0021] Furthermore, the dynamic spoiler device 41 includes an inner furnace 412, which is arranged inside the furnace body 1, and an air flow groove 414 is arranged inside the inner furnace 412. An air intake pipe 411 is connected to the inner furnace 412, and one end of the air intake pipe 411 passes through the furnace body 1 and is connected to the external steam generator, and the other end of the air intake pipe 411 is connected to the air flow groove 414, and a spiral tube 413 is arranged inside the air flow groove 414. When water or air flow is injected from the inside of the air flow groove 414, the blades on the rotating ring 430 will be directly driven to rotate, so the rotating ring 430 will rotate at this time, and water vapor or liquid water will be injected from the position of the air intake pipe 411, and then enter the air flow groove 414 of the inner furnace 412, and at this time, the air flow or water flow will spirally enter the inner furnace 412 from the pipeline of the spiral tube 413, and the spiral air intake makes the water vapor and air flow of the inner furnace 412 in a spiral surging state, which is convenient for the contact reaction with the magnesium rod 429 in the later stage.

[0022] Furthermore, the film removal device 42 includes a rotating ring 430, which is rotatably connected to the inner furnace 412. A plurality of blades are arranged on the surface of the rotating ring 430, and the blades are located inside the air flow groove 414. A spiral rod 421 is connected to the axial position of the rotating ring 430, and a spiral groove 422 is provided on the surface of the spiral rod 421. A sliding pin 424 is slidably connected to the spiral groove 422, and a sleeve 423 is connected to the sliding pin 424. A disc 425 is connected to the surface of the sleeve 423, and a cleaning device 428 is arranged on the disc 425. The rotation of the spiral rod 421 depends on the water flow or air flow injected from the inside of the air flow groove 414, which will directly push the blades on the rotating ring 430 to rotate, so the rotating ring 430 will rotate at this time, and the spiral rod 421 and the rotating ring 430 are relatively fixed. At this time, the spiral rod 421 will rotate, and the spiral rod 421 is provided with a cross reciprocating thread, and the sliding pin 424 will drive the spiral rod 421 to move up and down as it rotates, and the ring 423 will drive the disc 425 to reciprocate up and down, providing a power source for the subsequent reciprocating film removal.

[0023] In addition, a plurality of step grooves 417 are provided on the rotating ring 430, a magnesium rod 429 is plugged into the step groove 417, a bayonet 415 for positioning the magnesium rod 429 up and down is clamped into the step groove 417, a guide rod 426 is slidably connected to the disc 425, a bottom plate 427 is connected to the bottom of the guide rod 426, and the bottom plate 427 is fixed inside the inner furnace 412. Metal minerals, that is, square magnesium rods 429, are provided inside the inner furnace 412, so at this time, water vapor will react with the surface metal magnesium of the magnesium rod 429 to generate magnesium hydroxide and hydrogen, and the generation of hydrogen will move up with the gas, enter the interior of the furnace cover 2 from the plurality of holes provided on the rotating ring 430, and then be discharged from the position of the gas outlet pipe 3. The step groove 417 is provided for plug-in replacement after the magnesium rod 429 is consumed. As for the step part, in order to prevent the magnesium rod 429 from falling directly.

[0024] In addition, the cleaning device 428 includes a circular sleeve 4281, on which two lower plug plates 4283 and two upper plug plates 4282 are inserted, and the opposite surfaces of the upper plug plates 4282 and the lower plug plates 4283 abut against the surface of the magnesium rod 429, and the upper plug plates 4282 and the lower plug plates 4283 are provided with spring grooves, and the spring grooves are sleeved with arc springs 4284, and the bottom of the circular sleeve 4281 is connected with a movable sleeve 4285, and the movable sleeve 4285 is provided with a slot 4286. As the reaction occurs, the magnesium rod 429 will gradually be consumed, but the elastic force of the arc spring 4284 is used to always provide the upper plug plates 4283 and the lower plug plates 4282 with an inward extrusion force, so even if the surface of the magnesium rod 429 is consumed, the upper plug plates 4283 and the lower plug plates 4282 will still abut against the surface of the magnesium rod 429, maintaining a stable cleaning effect. There are multiple cleaning devices 428, and the multiple cleaning devices 428 are arranged in a circular array at the center of the rotating ring 430, and the disc 425 is located in the slots 4286 on the four movable sleeves 4285. The arrangement of multiple magnesium rods 429 can increase the contact area of ​​water vapor and increase the efficiency of hydrogen production. In addition, the up and down reciprocating motion of a disc 425 can achieve the synchronous motion of the four movable sleeves 4285, and finally remove the oxide film or chemical impurities on the surface of the magnesium rod 429.

[0025] It is worth noting that the impurity removal device 43 includes a bearing sleeve 431, the surface of the bearing sleeve 431 is connected to a cleaning rod 432, the bottom of the inner furnace 412 is a conical structure, and the surface of the cleaning rod 432 is in contact with the bottom wall of the inner furnace 412, and a feed port 433 is provided at the bottom of the inner furnace 412. When the spiral rod 421 rotates, it also drives the cleaning rod 432 on the bottom bearing sleeve 431 to rotate, and the purpose of the rotation of the cleaning rod 432 is to sweep the cleaned oxide film and impurities into the inside of the feed port 433, so as to remove the impurity accumulation in the inner furnace 412.

[0026] The top of the rotating rod 436 is connected to a pinion 438, and the surface of the pinion 438 is meshed with a disk gear 416, which enters the interior of the lifting sleeve 435 through the connection with the guide sleeve 434. As the rotating ring 430 rotates, the disk gear 416 will be driven to rotate, and the disk gear 416 will drive the pinion 438 meshed therewith to rotate, so the rotating rod 436 will drive the spiral blade 437 to rotate, and the spiral spiral blade 437 can be used to transfer the impurities at the bottom step by step to the upper space of the lifting sleeve 435, and finally squeeze them out from the position of the discharge pipe 440, so as to realize the automatic discharge of impurities. The disc gear 416 is fixed above the rotating ring 430, and the lifting sleeve 435 is connected with a return pipe 439, the left end of the return pipe 439 is connected with the inner furnace 412, and the right end of the return pipe 439 is connected with a filter. If it is an aqueous solution, it will follow the pipeline into the interior of the lifting sleeve 435, and the liquid water will flow back to the interior of the inner furnace 412 through the set return pipe 439, and the set filter is to filter impurities to prevent impurities from following the return pipe 439 and re-entering the inner furnace 412.

[0027] Working principle: first, this technical solution uses the contact between water vapor and magnesium rod 429 to carry out chemical reaction to achieve the hydrogen production process. However, this technical solution can also achieve the hydrogen production process by injecting liquid water. The specific water vapor and liquid water to be introduced are selected according to the actual situation of the user. First, water vapor or liquid water is injected from the position of the air inlet pipe 411, and then enters the air flow groove 414 of the inner furnace 412. At this time, the air flow or water flow will spiral into the inner furnace 412 from the pipeline of the spiral tube 413. The inner furnace 412 is provided with metal minerals, that is, square magnesium rods 429. Therefore, at this time, water vapor will react with the surface metal magnesium of the magnesium rod 429 to generate magnesium hydroxide and hydrogen. The generated hydrogen will move upward with the gas and enter the interior of the furnace cover 2 from the multiple holes opened on the rotating ring 430, and then be discharged from the position of the air outlet pipe 3. The interior of the furnace cover 2 is provided with fan blades. The rotation of the spiral rod 421 will drive the rotation of the fan blades, thereby accelerating the flow of the airflow, so that the hydrogen airflow enters the subsequent collection equipment from the position of the air outlet pipe 3. The rotation of the screw rod 421 is that when water or air is injected from the inside of the air flow groove 414, the blades on the rotating ring 430 will be directly pushed to rotate. Therefore, the rotating ring 430 will rotate at this time, and the screw rod 421 and the rotating ring 430 are relatively fixed. At this time, the screw rod 421 will rotate, and a cross reciprocating thread is set on the screw rod 421, and the sliding pin 424 will drive the screw rod 421 to move up and down as it rotates, and the ring 423 will drive the disc 425 to reciprocate up and down, and the disc 425 is stuck in the slot 4286 on the moving sleeve 4285, so at this time the moving sleeve 4285 The upper plug plate 4283 and the lower plug plate 4282 on the circular sleeve 4281 will be driven to contact and clean the surface of the magnesium rod 429, and the oxide film on the surface or the impurity magnesium hydroxide produced by the reaction will be scraped off, thereby ensuring that the metal mineral magnesium is always exposed to the air to achieve contact reaction with water. As the reaction occurs, the magnesium rod 429 will gradually be consumed, but the elastic force of the arc spring 4284 is used to always provide the upper plug plate 4283 and the lower plug plate 4282 with an inward extrusion force, so even if the surface of the magnesium rod 429 is consumed, the upper plug plate 4283 and the lower plug plate 4282 will still contact the surface of the magnesium rod 429 to maintain a stable cleaning effect. The upper plug plate 4283 and the lower plug plate 4282 must be in a state of up and down misalignment, because if they are in a parallel state, when the upper plug plate 4283 and the lower plug plate 4282 shrink and slide inward, the upper plug plate 4283 and the lower plug plate 4282 will produce extrusion interference. When the overall rotating ring 430 rotates, the magnesium rod 429 will also be driven to rotate as a whole. The purpose of the rotation is to increase the contact area between the magnesium rod 429 and the water vapor. Because the magnesium rod 429 in a rotating state contacts the water vapor more than the magnesium rod 429 in a fixed state, the basic effect of the magnesium rod 429 in a rotating state and the water vapor is obviously better, the contact is faster, and the reaction is faster.At the same time, when the spiral rod 421 rotates, it will also drive the cleaning rod 432 on the bottom bearing sleeve 431 to rotate. The purpose of the rotation of the cleaning rod 432 is to sweep the cleaned oxide film and impurities into the interior of the feed port 433, and then enter the interior of the lifting sleeve 435 through the connection of the guide sleeve 434. As the rotating ring 430 rotates, the disc gear 416 will be driven to rotate, and the disc gear 416 will drive the small gear 438 meshing with it to rotate, so the rotating rod 436 will drive the spiral blade 437 to rotate, and the spiral The blades 437 can transfer the impurities at the bottom step by step to the upper space of the lifting sleeve 435, and finally squeeze them out from the position of the discharge pipe 440 to realize the automatic discharge of impurities. When impurities accumulate inside the guide sleeve 434, water vapor will not flow out of the channel to achieve blocking. If it is an aqueous solution, it will follow the pipeline into the interior of the lifting sleeve 435, and return the liquid water to the interior of the inner furnace 412 through the reflux pipe 439. The filter screen is used to filter the impurities to prevent the impurities from re-entering the inner furnace 412 through the reflux pipe 439. Therefore, the entire kiln realizes the chemical reaction of metal minerals and water vapor to produce hydrogen, and there is no need for redundant operations by operators. While improving the efficiency of hydrogen production, it can also realize the automatic removal of the oxide film on the surface of the metal minerals and the final impurity removal effect.

[0028] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

Claims

1. A kiln for producing hydrogen by thermal reaction of water vapor and metal minerals, characterized in that: include: Furnace body (1); Furnace cover (2); An outlet pipe (3) for draining the generated hydrogen; A processing component (4) for producing hydrogen by a contact reaction between the metal mineral and water vapor; The processing assembly (4) comprises a powered disturbance device (41), a film removal device (42) and a debris removal device (43); The dynamic flow disturbance device (41) is used to change the airflow direction of water vapor entering the furnace body (1); The film removal device (42) is used to remove oxide films or chemical reaction impurities on the surface of metal minerals; The impurity removal device (43) is used to automatically remove chemical reaction impurities inside the furnace body (1); The furnace cover (2) is arranged on the furnace body (1), and the air outlet pipe (3) is connected to the furnace cover (2).

2. The kiln for producing hydrogen by thermal reaction of water vapor and metal minerals according to claim 1, characterized in that: An inner cavity (5) is provided inside the furnace body (1), and a plurality of heating rods (6) are installed on the inner wall of the inner cavity (5) for controlling the temperature inside the furnace body (1).

3. The kiln for producing hydrogen by thermal reaction of water vapor and metal minerals according to claim 1, characterized in that: The dynamic turbulence device (41) comprises an inner furnace (412), the inner furnace (412) being arranged inside a furnace body (1), an air flow groove (414) being arranged inside the inner furnace (412), an air intake pipe (411) being connected to the inner furnace (412), one end of the air intake pipe (411) passing through the furnace body (1) and being connected to an external steam generator, the other end of the air intake pipe (411) being in communication with the air flow groove (414), and a spiral tube (413) being arranged inside the air flow groove (414).

4. A kiln for producing hydrogen by thermal reaction of water vapor and metal minerals according to claim 3, characterized in that: The film removal device (42) includes a rotating ring (430), which is rotatably connected to the inner furnace (412). A plurality of blades are arranged on the surface of the rotating ring (430), and the blades are located inside the air flow groove (414). A spiral rod (421) is connected to the axial position of the rotating ring (430), and a spiral groove (422) is provided on the surface of the spiral rod (421). A sliding pin (424) is slidably connected to the spiral groove (422), and a sleeve (423) is connected to the sliding pin (424). A disc (425) is connected to the surface of the sleeve (423), and a cleaning device (428) is arranged on the disc (425).

5. The kiln for producing hydrogen by thermal reaction of water vapor and metal minerals according to claim 4, characterized in that: The rotating ring (430) is provided with a plurality of step grooves (417), a magnesium rod (429) is inserted into the step grooves (417), a locking pin (415) for positioning the magnesium rod (429) up and down is clamped into the step grooves (417), a guide rod (426) is slidably connected to the disc (425), a bottom plate (427) is connected to the bottom of the guide rod (426), and the bottom plate (427) is fixed inside the inner furnace (412).

6. The kiln for producing hydrogen by thermal reaction of water vapor and metal minerals according to claim 5, characterized in that: The cleaning device (428) comprises a circular sleeve (4281), two lower plug plates (4283) and two upper plug plates (4282) are plugged into the circular sleeve (4281), the opposing surfaces of the upper plug plates (4282) and the lower plug plates (4283) are in contact with the surface of the magnesium rod (429), the upper plug plates (4282) and the lower plug plates (4283) are both provided with spring grooves, the spring grooves are sleeved with circular arc springs (4284), the bottom of the circular sleeve (4281) is connected to a movable sleeve (4285), and the movable sleeve (4285) is provided with a card slot (4286).

7. The kiln for producing hydrogen by thermal reaction of water vapor and metal minerals according to claim 6, characterized in that: A plurality of cleaning devices (428) are provided, and the plurality of cleaning devices (428) are distributed in a circular array at the center position of the rotating ring (430), and the disc (425) is located in the slots (4286) on the four movable sleeves (4285).

8. The kiln for producing hydrogen by thermal reaction of water vapor and metal minerals according to claim 7, characterized in that: The impurity removal device (43) comprises a bearing sleeve (431), the surface of the bearing sleeve (431) is connected to a cleaning rod (432), the bottom of the inner furnace (412) is a conical structure, and the surface of the cleaning rod (432) is in contact with the bottom wall of the inner furnace (412), and a feed port (433) is provided at the bottom of the inner furnace (412).

9. The kiln for producing hydrogen by thermal reaction of water vapor and metal minerals according to claim 8, characterized in that: The bottom of the feed port (433) is connected to a guide sleeve (434), one end of the guide sleeve (434) is connected to a lifting sleeve (435), the interior of the lifting sleeve (435) is rotatably connected to a rotating rod (436), the surface of the rotating rod (436) is connected to a spiral blade (437), the surface of the lifting sleeve (435) is connected to a discharge pipe (440), the top of the rotating rod (436) is connected to a pinion (438), the surface of the pinion (438) is meshed with a disc gear (416), the disc gear (416) is fixed above the rotating ring (430), the lifting sleeve (435) is connected to a return pipe (439), the left end of the return pipe (439) is connected to the inner furnace (412), and the right end of the return pipe (439) is connected to a filter.

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