Thermochemical sulfur-iodine cycle hydrogen production HIx phase purification device

Abstract

The present invention discloses a thermochemical sulfur-iodine cycle hydrogen production HIx phase purification device, belonging to sulfur-iodine cycle hydrogen production equipment. The two outlets of the filter used are respectively connected to the hydroiodic acid distillation tower and the barium sulfate decomposition tower. A liquid inlet tank is installed on the outer top surface of the filter tank of the filter. The liquid inlet tank is equipped with a driving water wheel. A liquid inlet pipe is provided above one side of the driving water wheel. A rotating shaft connected to the driving water wheel is rotatably installed behind the other side. One side of the conical filter cover is provided with a strip-shaped perforation along its generatrix direction. Below the strip-shaped perforation is a material receiving trough arranged downward and capable of swinging downward. A scraper is fixed to the side of the rotating shaft. When the scraper rotates with the rotating shaft, when it approaches the strip-shaped perforation, the driving assembly drives the material receiving trough to rotate downward by an angle, so that the sediment accumulated in the material receiving trough continues to slide downward. The present invention can dynamically and continuously filter and separate the barium sulfate in the hydrogen production process.

Description

Technical Field

[0001] The invention relates to sulfur-iodine cycle hydrogen production equipment, in particular to a thermochemical sulfur-iodine cycle hydrogen production HIx phase purification device. Background Art

[0002] Sulfur-iodine cycle hydrogen production is a thermochemical cycle-based hydrogen production method designed to efficiently produce hydrogen using water as a feedstock through a series of chemical reactions. With the significant advantage of zero carbon emissions, it is considered a key technological path for hydrogen production in future sustainable energy systems. The sulfur-iodine cycle primarily involves the Bunsen reaction, sulfuric acid decomposition, and hydroiodic acid decomposition. Throughout these three steps, sulfur and iodine act as catalysts, continuously circulating in the reactions. The net result is the decomposition of water into hydrogen and oxygen. This technology uses water as the sole feedstock, and the entire hydrogen production process produces no greenhouse gas emissions, making it environmentally friendly and consistent with the energy needs of sustainable development.

[0003] Compared with the traditional method of hydrogen production by water electrolysis, sulfur-iodine cycle hydrogen production can achieve higher energy conversion efficiency under appropriate conditions. It uses thermal energy to drive chemical reactions and can make full use of various heat sources such as nuclear energy and solar heat. In theory, it can achieve higher hydrogen production efficiency.

[0004] Based on the above reasons, those skilled in the art have conducted in-depth research on sulfur-iodine cycle hydrogen production technology. In the entire reaction process, catalyst sulfur poisoning is one of the key factors affecting hydrogen production efficiency. In short, sulfur is the most common catalyst poison and the most difficult to completely remove. It can react with the active components of the catalyst, thereby causing the catalyst activity to decrease or even deactivate. In addition, signs of catalyst poisoning can occur when the sulfur content is extremely low. Those skilled in the art have conducted various studies on this. For example, the Chinese patent with publication number CN116143079A describes a method and device for HIx phase purification of thermochemical sulfur-iodine cycle hydrogen production. In this prior art, excess Ba is removed. 2+ The HIx phase is fed into the HIx purification tower and reacts with sulfuric acid to form a BaSO4 precipitate, removing sulfuric acid impurities and purifying the HIx solution. The resulting BaSO4 decomposes again at high temperature to form BaO, O2, and SO2. BaO reacts with HI in a mixer to form a BaI2 solution, facilitating pipeline transportation and enabling Ba recycling. The resulting high-temperature O2 and SO2 gases enter the BaSO4 decomposition tower, providing some energy for the H2SO4 decomposition reaction. This efficient removal of sulfuric acid, without consuming iodine, effectively mitigates the risk of subsequent HI decomposition catalyst S poisoning, ensuring long-term, continuous operation of the system.

[0005] Therefore, in the entire process chain of sulfur-iodine cycle hydrogen production, the separation and removal of BaSO4 precipitates in the HIx phase purification tower is extremely important, which is directly related to the degree of reduction in the risk of catalyst S poisoning. In the existing technology, the filtering equipment for BaSO4 precipitates in this reaction system often uses multi-layer filter elements for filtration. As the reaction proceeds, more and more barium sulfate will be covered on the surface of the filter element, resulting in a gradual decrease in the filtration capacity of barium sulfate throughout the reaction process, unstable filtration performance, which will greatly affect the uniformity and stability of the entire hydrogen production reaction. Summary of the Invention

[0006] In response to the shortcomings of the existing technology, the present invention provides a thermochemical sulfur-iodine cycle hydrogen production HIx phase purification device. This thermochemical sulfur-iodine cycle hydrogen production HIx phase purification device can dynamically and continuously and fully filter and separate barium sulfate, which is conducive to maintaining the continuous and stable operation of the entire hydrogen production reaction system.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a thermochemical sulfur-iodine cycle hydrogen production HIx phase purification device, comprising a separation tower, an HIx phase purification tower, a barium sulfate decomposition tower, a filter, and a hydroiodic acid distillation tower, wherein the heavy liquid phase outlet of the separation tower is connected to the HIx phase purification tower, and the two outlets of the filter are connected to the hydroiodic acid distillation tower and the barium sulfate decomposition tower, respectively; the filter comprises a filter chamber, a liquid inlet chamber is installed on the outer top surface of the filter chamber, a driving water wheel is provided in the liquid inlet chamber, a liquid inlet pipe is provided above one side of the driving water wheel, and a rotating shaft connected to the driving water wheel is rotatably installed at the rear of the other side thereof. The rotating shaft is located on the axis of a conical filter cover installed on the upper part of the filter bin, and the opening of the conical filter cover faces upward; one side of the conical filter cover is provided with a strip-shaped through-hole along its busbar direction, and a material receiving trough arranged obliquely downward is provided below the strip-shaped through-hole, and the material receiving trough is connected to a driving component, and the material receiving trough as a whole adopts the same hollow structure as the conical filter cover; a scraper is fixed on the side of the rotating shaft, and when the scraper rotates with the rotating shaft, it can scrape up the sediment on the surface of the conical filter cover, and when it approaches the strip-shaped through-hole, the driving component drives the material receiving trough to rotate downward by an angle, so that the sediment accumulated in the material receiving trough continues to slide downward.

[0008] Furthermore, a secondary filter cover fixed in the filter bin is provided around the bottom of the material receiving trough. The secondary filter cover can filter out finer sediments than the conical filter cover, and the secondary filter cover is also tilted. A spiral conveying shaft is tiltedly installed on the inner bottom of the secondary filter cover, and a discharge hole is provided at the bottom of the secondary filter cover at the bottom end of the spiral conveying shaft, and the discharge hole is connected to the barium sulfate decomposition tower.

[0009] Furthermore, a fine filter plate is horizontally fixed near the bottom of the filter bin, and a drain pipe is installed on the side wall of the filter bin below the fine filter plate, and the drain pipe is connected to the hydroiodic acid distillation tower.

[0010] Furthermore, the liquid inlet pipe is vertically installed on the top of one side of the liquid inlet bin, and the liquid inlet pipe is connected to the outlet of the HIx phase purification tower.

[0011] Furthermore, the driving water wheel includes a wheel body, a wheel axle, and a worm gear, the wheel body is fixed on the wheel axle, and the worm gear is fixed on the wheel axle; a worm is coaxially fixed to the portion of the rotating shaft exposed from the top of the filter bin, and the worm is engaged with the worm gear.

[0012] Furthermore, the wheel axle includes a first shaft and a second shaft, the first shaft is used to fix the wheel body, and the second shaft is used to fix the worm gear; a connecting seat is fixed at the end of the first shaft, the inner cavity of the connecting seat is a cylindrical cavity, and a closed ring for the second shaft to pass through is fixedly installed at the cavity mouth end, and a frustum is fixed at one end of the second shaft located in the cylindrical cavity, one end of the frustum is in extrusion contact with the bottom of the cylindrical cavity through a disc spring, and a stud is rotatably installed at the other end, and the stud is arranged parallel to the second shaft and is threadedly engaged with the closed ring.

[0013] Furthermore, a plurality of studs are provided in an annular array around the second shaft, and a cylindrical gear is fixed to the end of each stud, and the cylindrical gear is engaged with an inner gear ring rotatably mounted on the connecting seat.

[0014] Furthermore, a ring sleeve is integrally connected to the outer side of the inner gear ring, and one end of the ring sleeve is screwed onto the outer wall of the connecting seat with a threaded fit; a resistance spring is axially installed in the inner wall of the ring sleeve, and the end of the resistance spring exposed outside the inner wall of the ring sleeve is in extrusion contact with the end face of the closed ring.

[0015] Furthermore, the driving assembly includes a bent shaft fixed at the bottom of the receiving trough near the top, a connecting rod is fixed in the radial direction of the bent shaft, the connecting rod is fixed on the main shaft of a motor, and the motor is installed on the back of the filter bin; the free end of the bent shaft is slidably inserted into a concentrically arranged bent pipe, the bent pipe is fixed in the filter bin, and an arc spring is installed in the bent pipe, the arc spring is connected to the free end of the bent shaft; it also includes a No. 1 conductor, a No. 2 conductor, a reset spring and an insulating slider, the reset spring does not contact the ground sleeve It is arranged outside the No. 2 conductor, and the free end of the return spring is connected to the No. 1 conductor, so that under normal circumstances, the two conductors do not contact each other and the motor is working; the No. 1 conductor is fixed as a whole with one end of the insulating slider, and the other end of the insulating slider is exposed from the top surface of the filter bin under normal circumstances, and the exposed top surface of the insulating slider has a convex arc surface, so that the scraper is squeezed into contact with the arc surface and the insulating slider is completely squeezed into the inner top wall of the filter bin. During the period, the No. 1 conductor and the No. 2 conductor always maintain contact with each other, and the motor is energized during this period.

[0016] Furthermore, the insulating slider is a fan-shaped block structure, the radial edge on the left side of its bottom end has a chamfered corner to form the arc surface, and the remaining bottom end surface is a horizontal end surface. When the top end of the scraper partially slides and contacts on the horizontal end surface, the No. 1 conductor and the No. 2 conductor always remain in contact with each other.

[0017] Beneficial effects:

[0018] The present invention provides a thermochemical sulfur-iodine cycle hydrogen production HIx phase purification device, which has the following advantages: The device features a simple and reliable structure. To ensure effective HIx phase purification, barium sulfate precipitates are fully filtered out using a specialized filter, preventing sulfur poisoning of the catalyst in the hydrogen production reaction caused by large amounts of sulfur remaining in the HI and BaI2 mixture. This thermochemical sulfur-iodine cycle hydrogen production HIx phase purification device effectively filters out barium sulfate precipitates, eliminating the effects of sulfur on the catalyst. Furthermore, dynamic scraping of barium sulfate precipitates minimizes potential blockage caused by barium sulfate coating the filter element, ensuring continuous and sufficient filtration of barium sulfate throughout the hydrogen production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic diagram of the structure inside the filter bin of the present invention;

[0020] Figure 2 The installation structure diagram for driving the water wheel;

[0021] Figure 3 Schematic diagram of a friction contact structure of a wheel axle;

[0022] Figure 4 for Figure 1 Enlarged view of point A in the middle;

[0023] Figure 5 for Figure 4 A specific matching structure diagram of the two conductors in;

[0024] Figure 6 for Figure 5 A bottom view of a specific structure of conductor No. 1 in FIG.

[0025] In the figure: filter chamber 1, conical filter cover 2, liquid inlet chamber 3, liquid inlet pipe 4, driving water wheel 5, wheel body 6, wheel axle 7, first shaft 701, second shaft 702, connecting seat 8, ring sleeve 9, cylindrical gear 10, worm gear 11, worm 12, rotating shaft 13, scraper 14, strip perforation 15, material receiving trough 16, spiral conveying shaft 17, secondary filter cover 18, discharge hole 19, fine filter plate 20, disc spring 21, round table 22, stud 23, resistance spring 24, inner gear ring 25, closing ring 26, bent shaft 27, connecting rod 28, motor 29, bent pipe 30, arc spring 31, insulating slider 32, arc surface 3201, horizontal end surface 3202, conductor No. 1 33, return spring 34, conductor No. 2 35, discharge pipe 36. DETAILED DESCRIPTION

[0026] This specification will clearly and completely express the technical solutions in the following embodiments based on the drawings of the embodiments of the present invention. The implementation methods described in this specification are only some of the embodiments of the present invention, not all of them. All other embodiments derived from these embodiments in this application by persons of ordinary skill in the art without any creative effort should fall within the scope of protection of the present invention.

[0027] like Figure 1The illustrated device for thermochemical sulfur-iodine cycle hydrogen production using a HIx phase purification system includes a separation tower, a HIx phase purification tower, a barium sulfate decomposition tower, a filter, and a hydroiodic acid distillation tower. The separation tower primarily performs liquid-liquid separation, separating liquids of varying densities. The heavy liquid phase outlet outputs the HIx phase liquid, which is then connected to an inlet of the HIx phase purification tower. The filter in this embodiment has two outlets, one for receiving the mixture of HI, BaI2, and BaSO4 discharged from the HIx phase purification tower. The two outlets are connected to the hydroiodic acid distillation tower and the barium sulfate decomposition tower, respectively. When connected to the hydroiodic acid distillation tower, the HI and BaI2 mixture is output. The barium sulfate decomposition tower is connected to the barium sulfate precipitate produced by the reaction in the HIx phase purification tower, thereby removing sulfur and avoiding the risk of catalyst S poisoning during the corresponding hydrogen production reaction. Specifically, the filter in this embodiment includes a filter chamber 1, which is primarily used to filter out BaSO4 from a mixture of HI, BaI2, and BaSO4. Specifically, a liquid inlet chamber 3 is mounted on the outer top surface of the filter chamber 1. A driving water wheel 5 is located within the liquid inlet chamber 3. A liquid inlet pipe 4 is located above one side of the driving water wheel 5. Specifically, the liquid inlet pipe 4 can be vertically mounted on the top of one side of the liquid inlet chamber 3. The liquid inlet pipe 4 is connected to the outlet of the HIx phase purification tower so that when the mixed liquid flows downward, it impacts the driving water wheel 5, causing it to rotate. Behind the other side of the driving water wheel 5, a rotating shaft 13 is specifically mounted and drivingly connected to the driving water wheel 5. This rotating shaft 13 is located on the axis of a conical filter cover 2 installed at the top of the filter chamber 1, with the opening of the conical filter cover 2 facing upward to facilitate filtration. In addition, in the present embodiment, a strip-shaped perforation 15 is provided on one side of the conical filter cover 2 along its busbar direction, and a receiving trough 16 arranged obliquely downward is provided below the strip-shaped perforation 15. The receiving trough 16 is located below the strip-shaped perforation 15 to form a split filter element together with the conical filter cover 2. At the same time, the receiving trough 16 is connected to a driving component, and the receiving trough 16 as a whole adopts the same hollow structure as the conical filter cover 2 to achieve filtration. On the other hand, in the present embodiment, a scraper 14 is fixed to the side of the rotating shaft 13. The scraper 14 can be provided with a plurality of fine holes on the surface. When the scraper 14 rotates with the rotating shaft 13, it can scrape up the sediment on the surface of the conical filter cover, that is, scrape off the barium sulfate and continue to rotate and move, and when it is close to the strip-shaped perforation 15, the barium sulfate gathered together is concentrated and flows into the strip-shaped perforation 15 and falls into the above-mentioned receiving trough 16 for temporary storage. Moreover, as Figure 1 The aforementioned driving assembly can drive the receiving chute 16 to rotate downward by an angle, that is, the receiving chute 16 rotates downward to Figure 1The position indicated by the dotted line in the drawing is positioned so that the accumulated precipitate in the receiving trough 16 continues to slide downward, thereby allowing the barium sulfate precipitate to be collected in a centralized manner. During use, the driving water wheel 5 rotates due to the impact of the mixed liquid flowing out of the liquid inlet pipe 4. This not only saves energy, but more importantly, the driving water wheel 5 rotates at a relatively slow speed. This is primarily to facilitate the filtration of the HI, BaI2, and BaSO4 mixture produced by the HIx phase purification column on the aforementioned conical filter cover 2, accumulating sufficient barium sulfate. This allows the scraper 14 to scrape up a large amount of barium sulfate during each scraping cycle, which then falls into the strip-shaped perforations 15, thus avoiding frequent scraping, resulting in only a small amount of barium sulfate precipitate being carried by the scraper 14 each time, causing the scraper 14 to idle. In addition, when the filter in the present device is in operation, the barium sulfate precipitate filtered out from the conical filter cover 2 will slide downward to the bottom of the cone, and then fall into the above-mentioned receiving trough 16 through the strip-shaped perforations 15 in a concentrated manner. Therefore, even if the scraper 14 has not yet scraped the strip-shaped perforations 15, a large amount of barium sulfate precipitate has already accumulated in the receiving trough 16, so that each time the receiving trough 16 is turned downward, enough barium sulfate is discharged.

[0028] To improve filterability, Figure 1 As shown, a secondary filter cover 18 fixed in the filter bin 1 is provided around the bottom of the receiving trough 16. This secondary filter cover 18 can filter out finer sediments than the conical filter cover 2. The specific shape and size depend on the receiving trough 16 above it. It is required to thoroughly receive the liquid leaked from the receiving trough and then realize secondary filtration. Because the liquid flowing down from the receiving trough 16 is rich in barium sulfate, it is likely that more barium sulfate will remain in the rest of the conical filter cover 2, so an additional filtration is required. When installed, the above secondary filter cover 18 is also tilted like the material receiving trough 16. A spiral conveying shaft 17 can be installed at an angle on the inner bottom of the secondary filter cover 18 to actively discharge barium sulfate. At the bottom of the secondary filter cover 18 at the bottom end of the spiral conveying shaft 17, a discharge hole 19 is also specially opened for centralized discharge of barium sulfate. That is, this discharge hole 19 is connected to the barium sulfate decomposition tower, and the purified barium sulfate precipitate is input into the sulfuric acid decomposition tower, and decomposed again to obtain BaO, SO2 and O2, so that BaO can be input into the mixer and mixed to obtain a mixed solution of HI and BaI2, which then provides sufficient Ba for the reaction in the HIx phase purification tower, realizes the recycling of Ba, and continuously provides reaction raw materials to avoid catalyst S poisoning.

[0029] like Figure 1As shown, in this embodiment, a fine filter plate 20 can be horizontally fixed near the bottom of the filter chamber 1. This fine filter plate 20 has excellent filtering properties, filtering out fine barium sulfate particles and filtering out a larger amount of barium sulfate. In addition, a drain pipe 36 is specially installed on the side wall of the filter chamber 1 below the fine filter plate 20. This drain pipe 36 discharges the HI and BaI2 mixture, transporting the HI and BaI2 to the hydroiodic acid distillation column for purification. The distilled HI and BaI2 are then fed into the mixer to provide raw materials for desulfurization (producing barium sulfate) in the HIx phase purification column.

[0030] As one of the specific implementation structures, Figure 2 As shown, the driving water wheel 5 in this embodiment includes a wheel body 6, a wheel shaft 7, and a worm gear 11. The wheel body 6 is fixed to the wheel shaft 7, and the worm gear 11 is fixed to the wheel shaft 7. The portion of the rotating shaft 13 exposed from the top of the filter chamber 1 is coaxially fixed with a worm 12. The worm 12 is engaged with the worm gear 11, and then the rotation of the driving water wheel 5 drives the rotation of the rotating shaft 13, that is, the scraper 14 rotates to scrape the barium sulfate precipitate on the inner wall of the conical filter cover 2. More specifically, in order to make the rotation of the scraper 14 better adjustable and controllable, as shown in FIG. Figure 2-Figure 3The present axle 7 comprises a first shaft 701 and a second shaft 702. The first shaft 701 is used to secure the wheel body 6, while the second shaft 702 is used to secure the worm gear 11. This means that the axle 7 is not integrally formed. To connect the two shafts, a connecting seat 8 can be fixed to the end of the first shaft 701. The inner cavity of the connecting seat 8 is a cylindrical cavity, and a closed ring 26 is fixedly mounted at the cavity end for the second shaft 702 to pass through. The two can be fixed by bolts, etc. In addition, a round table 22 is fixed at one end of the second shaft 702 located in the cylindrical cavity. The round table 22 is axially slidably matched with the cylindrical cavity, and one end of the round table 22 is squeezed and contacted with the bottom of the cylindrical cavity through the disc spring 21. A stud 23 is rotatably installed at the other end. The stud 23 is arranged parallel to the second shaft 702 and is threadedly matched with the closed ring 26. Rotating the stud 23 can change the contact tightness between the round table 22 and the connecting seat 8, that is, the maximum static friction between the two can be changed. The transmission between the two shafts is mainly friction transmission. The greater the friction, the higher the transmission efficiency. When the friction When the force reaches a certain level, the two shafts rotate synchronously, that is, the two shafts break away from the state of relative slippage. Therefore, when the speed of the scraper 14 is to be increased, that is, the speed of the rotating shaft 13 is to be increased, the stud 23 can be further screwed in, so that the friction between the two will increase, so that when the water wheel 5 is driven to rotate, the second shaft 702 will also rotate at a faster speed. Conversely, if the stud 23 is screwed out, the disc spring 21 is further released, the friction between the two will decrease, and the speed of the second shaft 702 will also decrease. Or objectively speaking, the looser the connection between the two shafts, the greater the relative slippage during rotation. Through this special installation structure, the rotation speed of the scraper 14 can be fine-tuned according to different reactant dosages, that is, different amounts of heavy liquid phase, so that the rotation frequency of the scraper 14 fully matches the amount of barium sulfate deposited on the conical filter cover 2, and the barium sulfate is better discharged in a concentrated manner.

[0031] In the above embodiments, Figure 3 As shown, multiple studs 23 are actually provided, and these studs 23 are arranged in an annular array around the second shaft 702. A cylindrical gear 10 is fixed to the end of each stud 23. The cylindrical gear 10 meshes with an inner gear ring 25 rotatably mounted on the connecting base 8. The rotating ring gear can rotate all the cylindrical gears 10 while also moving axially to adjust the force of the friction transmission. This also makes the force on the circular table 22 more uniform, and the overall structure more reliable. To maintain the corresponding structural state when adjusted, a ring sleeve 9 is integrally connected to the outer side of the inner gear ring 25. One end of this ring sleeve 9 is screwed onto the outer wall of the connecting base 8 so that when rotated into position, it can maintain a relatively stable position and is not easily misaligned. To improve the positional stability of each stud 23 when adjusted, a resistance spring 24 is axially mounted on the inner wall of the ring sleeve 9. The end of the resistance spring 24 that is exposed outside the inner wall of the ring sleeve 9 is in compression contact with the end face of the sealing ring 26, thereby firmly mounting the ring sleeve 9.

[0032] In the above embodiments, Figure 1 and Figure 4 As shown, its driving assembly includes a bent shaft 27 fixed to the bottom of the material receiving trough 16 near the top, and a connecting rod 28 is fixed to the radial direction of this bent shaft 27. The connecting rod 28 is fixed to the main shaft of a motor 29, and the motor 29 is installed at the back of the filter bin 1. In addition, the free end of the bent shaft 27 needs to be slidably inserted into a concentrically arranged curved pipe 30, which is fixed in the filter bin 1 and has an arc spring 31 installed in the curved pipe 30. The arc spring 31 is connected to the free end of the bent shaft 27. One of the purposes is to assist the motor in supporting the material receiving trough 16 under normal conditions. At the same time, if the main shaft of the selected motor itself can be slightly rotated under the action of an external force other than the motor itself, once more sediment and liquid fall into the material receiving trough 16, the material receiving trough 16 will shake, which is not only beneficial to filtration, but also can promote the sediment to slide downward. During use, the bent shaft 27 can rotate in an arc around the center of the curved path, thereby causing the receiving trough 16 to swing in a circle around the above-mentioned center. The reason why it is fixed at the upper end of the bottom of the receiving trough 16 is to better allow the lower end of the receiving trough 16 to tilt downward, thereby exposing a sufficiently large gap between it and the conical filter cover 2, so that the barium sulfate can be discharged downward in a concentrated manner. The arc spring 31 mentioned above needs to cooperate with the bent shaft 27 to ensure that the receiving trough 16 is normally located below the strip perforation 15, and the receiving trough 16 and the outer wall of the conical filter cover 2 do not contact each other, that is, there is a gap to avoid the top end of the receiving trough 16 from contacting and interfering with the outer wall of the conical filter cover 2 when the bottom end of the receiving trough 16 rotates downward, so that the barium sulfate can be discharged when it is appropriate. The receiving trough 16 can specifically be a slide structure with a rectangular cross-section, the width of which is greater than the width of the strip perforation 15, so as to thoroughly receive the sediment and liquid falling from the strip perforation 15, such as Figure 1 The bottom end is blocked and closed by the corresponding components. When the bottom end of the receiving chute 16 is driven by the bending shaft, the sediment is discharged downward.

[0033] As a specific design solution, Figure 4As shown, this embodiment further includes a No. 1 conductor 33, a No. 2 conductor 35, a return spring 34, and an insulating slider 32. The return spring 34 is non-contactably mounted on the exterior of the No. 2 conductor 35. The No. 2 conductor 35 may be a metal post. The metal post and the No. 1 conductor 33 are both connected to corresponding circuit wires. This is equivalent to closing the circuit when the two conductors touch. This circuit may be the operating circuit that controls the activation of the motor 29. Specifically, the free end of the return spring 34 is connected to the No. 1 conductor 33, ensuring that the two conductors do not contact each other under normal conditions. In other words, under normal conditions, the motor 29 is not operating. The No. 1 conductor 33 is fixed as a whole with one end of the insulating slider 32, and the other end of the insulating slider 32 is exposed from the top surface of the filter bin 1 under normal conditions, and the exposed top surface of the insulating slider 32 has a raised arc surface 3201, so as to contact the top of the scraper 14 and squeeze the insulating slider 32. This allows the scraper 14 to be squeezed and contacted with the arc surface 3201. During the period of time when the insulating slider 32 is completely squeezed into the inner top wall of the filter bin 1, the No. 1 conductor 33 and the No. 2 conductor 35 always maintain contact with each other. During this period, the motor 29 is energized and the receiving trough 16 swings down to discharge the barium sulfate precipitate.

[0034] In order to keep the trough 16 in the downward state for a certain period of time, Figure 5-Figure 6 As shown, the insulating slider 32 is a fan-shaped block structure, and the radial edge on the left side of its bottom end has a chamfered corner to form an arc surface 3201 so as to contact the top of the scraper 14, and the remaining bottom end surface of the insulating slider 32 is a horizontal end surface 3202. When the top part of the scraper 14 slides on the horizontal end surface 3202, the No. 1 conductor 33 and the No. 2 conductor 35 will always maintain contact with each other during this time period, and then the motor 29 will always be turned on, and the material receiving trough 16 will continue to be in a downward discharging state.

[0035] It should be explained here that, in this specification, terms such as first and second are only used to distinguish one feature from another, and do not mean that there is a certain relationship or order between these technical features. The terms "include" and "comprise" refer to the inclusion of one or certain technical means or features, specifically meaning that there are other existing or non-existing technical features that have not been included. The discussion in the above embodiments is only a referential example for the present invention, and is by no means the only restrictive constraint feature. Those skilled in the art should understand that, without departing from the technical content recorded in all claims of this application, some simple replacements and modifications can be made, thereby changing or becoming equivalent to other specific embodiments and application scenarios. However, no matter how the adaptive changes are made, these embodiments will inevitably fall within the scope of protection of the present invention.

Claims

1. A thermochemical sulfur-iodine cycle hydrogen production HIx phase purification device, comprising a separation tower, an HIx phase purification tower, a barium sulfate decomposition tower, a filter, and a hydroiodic acid distillation tower, wherein the heavy liquid phase outlet of the separation tower is connected to the HIx phase purification tower, and the two outlets of the filter are connected to the hydroiodic acid distillation tower and the barium sulfate decomposition tower, respectively, characterized in that: The filter comprises a filter chamber (1), a liquid inlet chamber (3) is installed on the outer top surface of the filter chamber (1), a driving water wheel (5) is rotatably provided in the liquid inlet chamber (3), a liquid inlet pipe (4) is provided above one side of the driving water wheel (5), and a rotating shaft (13) connected to the driving water wheel (5) is rotatably installed at the rear of the other side thereof, the bottom end of the rotating shaft (13) passes through the filter chamber (1) and is located in a conical filter cover (2) installed at the upper part of the filter chamber (1), and the opening of the conical filter cover (2) faces upward; one side of the conical filter cover (2) is provided with a strip-shaped through hole (15) along the generatrix direction thereof, and a material receiving trough (16) arranged obliquely downward is provided below the strip-shaped through hole (15), and the material receiving trough (16) can receive all sediment and liquid falling from the strip-shaped through hole (15); the material receiving trough (16) is connected to a driving assembly, and the material receiving trough (16) as a whole adopts the same hollow structure as the conical filter cover (2); A scraper (14) is fixed to the side of the rotating shaft (13). When the scraper (14) rotates together with the rotating shaft (13), it can scrape off the sediment on the surface of the conical filter cover (2). When it approaches the strip-shaped perforation (15), the driving component drives the receiving trough (16) to rotate downward by an angle, so that the sediment accumulated in the receiving trough (16) continues to slide downward. A secondary filter cover (18) fixed in the filter bin (1) is further provided around the lower portion of the receiving trough (16). The secondary filter cover (18) can filter out finer sediments than the conical filter cover (2), and the secondary filter cover (18) is also tilted. A spiral conveying shaft (17) is tiltedly installed on the inner bottom of the secondary filter cover (18). A discharge hole (19) is provided at the bottom of the secondary filter cover (18) at the bottom end of the spiral conveying shaft (17). The discharge hole (19) is connected to the barium sulfate decomposition tower. A fine filter plate (20) is horizontally fixed at the bottom of the filter chamber (1), and a drain pipe (36) is installed on the side wall of the filter chamber (1) below the fine filter plate (20), and the drain pipe (36) is connected to the hydroiodic acid distillation tower; the liquid inlet pipe (4) is vertically installed on the top of one side of the liquid inlet chamber (3), and the liquid inlet pipe (4) is connected to the outlet of the HIx phase purification tower; the driving water wheel (5) includes a wheel body (6), a wheel shaft (7), and a worm wheel (11), the wheel body (6) is fixed on the wheel shaft (7), and the worm wheel (11) is fixed on the wheel shaft (7); a worm (12) is coaxially fixed to the portion of the rotating shaft (13) exposed from the top of the filter chamber (1), and the worm (12) is meshed with the worm wheel (11); The wheel axle (7) includes a first shaft (701) and a second shaft (702), the first shaft (701) is used to fix the wheel body (6), and the second shaft (702) is used to fix the worm gear (11); a connecting seat (8) is fixed at the end of the first shaft (701), the inner cavity of the connecting seat (8) is a cylindrical cavity, and a closed ring (26) for the second shaft (702) to pass through is fixedly installed at the cavity mouth end, and a frustum (22) is fixed at one end of the second shaft (702) located in the cylindrical cavity, and one end of the frustum (22) is in extrusion contact with the bottom of the cylindrical cavity through a disc spring (21), and a stud (23) is rotatably installed at the other end, and the stud (23) is arranged parallel to the second shaft (702) and is threadedly engaged with the closed ring (26); The driving assembly includes a bent shaft (27) fixed at the bottom of the material receiving trough (16) near the top, a connecting rod (28) fixed in the radial direction of the bent shaft (27), and the connecting rod (28) is fixed on the main shaft of a motor (29), and the motor (29) is installed on the back of the filter bin (1); the free end of the bent shaft (27) is inserted into a concentrically arranged curved pipe (30) in a sliding manner, and the curved pipe (30) is fixed in the filter bin (1), and an arc spring (31) is installed in the curved pipe (30), and the arc spring (31) is connected to the free end of the bent shaft (27) and, together with the bent shaft (27), makes the material receiving trough (16) under normal conditions be located below the strip-shaped perforation (15), and a gap is formed between the material receiving trough (16) and the outer side surface of the conical filter cover (2); and further includes a No. 1 conductor (33), The second conductor (35), the return spring (34) and the insulating slider (32) are provided. The return spring (34) is non-contactingly sleeved on the outside of the second conductor (35), and the free end of the return spring (34) is connected to the first conductor (33), so that under normal conditions, the two conductors do not contact each other and the motor does not work; the first conductor (33) is fixed as a whole with one end of the insulating slider (32), and the other end of the insulating slider (32) is exposed from the top surface of the filter chamber (1) under normal conditions, and the exposed top surface of the insulating slider (32) has a convex arc surface (3201), so that during the time period when the scraper (14) is pressed into contact with the arc surface (3201) and the insulating slider (32) is completely squeezed into the inner top wall of the filter chamber (1), the first conductor (33) and the second conductor (35) always keep in contact with each other, and the motor is energized during this period.

2. A thermochemical sulfur-iodine cycle hydrogen production HIx phase purification device according to claim 1, characterized in that: There are a plurality of studs (23) arranged in an annular array around the second shaft (702), and a cylindrical gear (10) is fixed to the end of each stud (23), and the cylindrical gear (10) is engaged with an inner gear ring (25) rotatably mounted on the connecting seat (8).

3. A thermochemical sulfur-iodine cycle hydrogen production HIx phase purification device according to claim 2, characterized in that: The outer side of the inner gear ring (25) is integrally connected with a ring sleeve (9), and one end of the ring sleeve (9) is screwed on the outer wall of the connecting seat (8) in a threaded manner; a resistance spring (24) is axially installed in the inner wall of the ring sleeve (9), and the end of the resistance spring (24) exposed outside the inner wall of the ring sleeve (9) is in compression contact with the end face of the closed ring (26).

4. The thermochemical sulfur-iodine cycle hydrogen production HIx phase purification device according to claim 1, characterized in that: The insulating slider (32) is a fan-shaped block structure, the radial edge of the left side of the bottom end of which has a rounded corner to form the arc surface (3201), and the remaining bottom end surface is a horizontal end surface (3202). When the top end of the scraper (14) partially slides on the horizontal end surface (3202), the first conductor (33) and the second conductor (35) always maintain contact with each other.

Images