A recirculation feed device for a reactor

Abstract

This application relates to the technical field of reactor feeding devices and discloses a circulating feeding device for a reactor, including a transport vehicle with a cargo box on it. The cargo box contains an air tank, a material cabinet, and a fluidized reactor. Multiple sets of flat material boxes are stacked on the material cabinet. During transportation, only one set of flat material boxes needs to be kept empty for loading recycled materials. This thermochemical reactor for thermochemical energy storage and its usage method maximize the utilization of transport space and automate the transfer of materials between the material cabinet and the fluidized reactor through the stacked layout of the flat material boxes and the automatic replacement mechanism of the side-mounted handling components. At the same time, the inclined design of the eccentric support rod enables gravity-driven dumping / loading, completely eliminating the need for traditional screw feeders and other additional conveying equipment, significantly improving the energy delivery capacity and compact integration of the thermochemical energy storage system.

Description

Technical Field

[0001] This application relates to the field of reactor feeding device technology, and more particularly to a circulating feeding device for a reactor. Background Technology

[0002] Thermochemical energy storage technology achieves efficient energy storage and release through reversible chemical reactions, possessing significant advantages such as high energy density, long-term lossless storage, and convenient long-distance transportation. It shows broad application prospects in renewable energy consumption, industrial waste heat utilization, and distributed energy systems. Among these, calcium-based thermochemical materials are highly promising thermal storage media due to their abundant raw materials, low cost, high reaction enthalpy, and environmental friendliness. The basic principle of this technology is to utilize surplus thermal energy (such as solar energy or industrial waste heat) in a centralized energy storage center to drive a dehydration reaction (Ca(OH)2 + heat = CaO + H2O), storing the thermal energy in solid CaO as chemical energy. Subsequently, the high-energy-density CaO is transported to decentralized user sites or industrial parks, where heat is released through a hydration reaction (CaO + H2O = Ca(OH)2 + heat) when needed, achieving on-demand thermal energy supply.

[0003] However, existing technologies face the following problems when applying thermochemical energy storage to the "centralized energy storage - decentralized energy consumption" model. First, the reactants and reactors are transported on vehicles. A transport vehicle and its reactor constitute an energy storage unit. This transport vehicle typically requires separate silos to store pre-reaction materials and recover post-reaction materials. During transport, one silo is empty, occupying valuable internal space in the transport vehicle (such as a truck or container), severely limiting the total energy that can be carried in a single transport and reducing the energy delivery capacity and economic efficiency of the entire energy storage system. Second, due to the space constraints of the transport vehicle, in typical reactor designs, the silo and reaction chamber are often at the same level. When loading, unloading or switching materials, additional mechanical conveying equipment (such as screw feeders, pneumatic conveying pumps or elevators) must be used to transfer materials between the silo and the reactor. These auxiliary devices not only increase the complexity and cost of the system, but also further encroach on the already limited space inside the vehicle or equipment, making it difficult to achieve compactness and efficient integration of the entire energy storage unit, thus hindering its large-scale application in space-constrained scenarios. Summary of the Invention

[0004] This application proposes a circulating feeding device for a reactor. Through the stacked layout of flat material boxes and the automatic replacement mechanism of side-mounted conveying components, it maximizes the utilization of transport space (keeping only one empty material box) and automates the transfer of materials between the material cabinet and the fluidized reactor. At the same time, the inclined design of the eccentric support rod enables gravity dumping / loading, completely eliminating the need for additional conveying equipment such as traditional screw feeders, and significantly improving the energy transmission capacity and compact integration of the thermochemical energy storage system.

[0005] To achieve the above objectives, this application adopts the following technical solution: a circulating feeding device for a reactor, comprising a transport vehicle, a cargo box on which an air tank, a material cabinet, and a fluidized reactor are loaded. Multiple sets of flat material boxes are stacked on the material cabinet. During transport, only one set of flat material boxes needs to be kept empty for transporting recycled materials, while the remaining material boxes are loaded with reactants. The upper and lower ends of the fluidized reactor are equipped with connecting joints for material exchange. The side wall of the cargo box is equipped with a handling component, configured to transfer any material box between the material cabinet and the inlet / outlet positions of the fluidized reactor, and to replace an empty material box with a full one. When a material box is transferred to the corresponding position of the fluidized reactor and docked therewith, its inner cavity communicates with the fluidized reactor through the connecting joint.

[0006] Furthermore, the air tank is located on top of the cargo box, corresponding to the position of the material cabinet. The air tank has a large span, is located above almost all equipment, and facilitates the installation of various pipelines.

[0007] Furthermore, the connecting joint is located on one side of the fluidized reactor, and its end is provided with a T-slot. The material box includes a box body, and the side wall of the box body is provided with T-blocks corresponding to the T-slots. The T-blocks corresponding to the T-slots are aligned from the side, and the inlet and outlet are located on the side, so that receiving and pouring materials does not require flipping. At the same time, they are interlocked to ensure dynamic alignment.

[0008] Furthermore, the fluidized reactor is provided with an upper support rod at the top, which is eccentric and far away from the connector. The fluidized reactor is provided with a lower support rod at the bottom, which is eccentric and close to the connector, so that the material box is tilted to facilitate pouring and receiving of materials. The bottom of the material box is provided with two positioning grooves corresponding to the upper and lower support rods respectively. The positioning grooves prevent the position of the material box from changing with tilting, so as to facilitate the handling of the transport components.

[0009] Furthermore, pressure sensors are installed on both the lower and upper support rods. When the material box is placed on the lower or upper support rod and tilted, at least one end of the material box is suspended in the air, while the other end can move freely and contact the fluidized reactor. The pressure sensors are connected to a controller, which determines whether the material box is full or empty based on the weight of the material box fed back by the pressure sensors. No additional sensors are required inside the material box.

[0010] Furthermore, the connector is connected to the fluidized reactor via a hose. Elastic bodies are provided between the connector on the feed side and the top of the material box, and between the connector on the discharge side and the bottom of the fluidized reactor. These elastic bodies maintain the connector in a preset position. This allows the connector to adapt to the tilting of the material box and to return to its original position, maintaining a consistent orientation.

[0011] Furthermore, the connector is equipped with a docking channel, and at the end of the docking channel is an active gate and a driver for driving the active gate. The side wall of the driver is equipped with an active lever extending into a T-slot. The T-slot has an inlet and outlet, and a passive gate is located within the inlet and outlet. The passive gate is connected to the passive lever. The end of the T-slot has a guide groove corresponding to the active lever, and the active lever is aligned with the guide groove. A return spring is provided on the passive lever. The connector and the material box channel operate synchronously, and the opening and closing of the material box requires no additional drive.

[0012] Furthermore, the handling assembly includes a slider that moves along a vertically arranged guide rail. There are two sets of guide rails, located on the front and rear sides of the cargo box respectively. A vertical drive component is provided on the cargo box, which drives the slider to move along the guide rail. The slider is hinged to a support plate, and a detachable diagonal support is provided between the support plate and the slider. The support plate is provided with a guide rod and a lateral drive component. The guide rod is slidably connected to a telescopic fork, and the lateral drive component and the telescopic fork are connected in a transmission manner. The support plate can be folded for convenient transportation.

[0013] The beneficial effects of this invention are as follows:

[0014] This invention achieves efficient utilization of transportation space by using flat-shaped material boxes and placing them in a stacked manner on a material cabinet. During transportation, only one material box needs to be kept empty for subsequent loading of recycled materials, while all other material boxes can be loaded with high-energy-density reaction materials, which significantly increases the total energy of a single transport and effectively improves the energy transmission capacity and economy of the entire energy storage system.

[0015] This invention features a low center of gravity design for the flat material box, making it easy to handle and transport. During unloading, the material box is supported by an upper support rod away from the connector, placing the connector at its lowest point to facilitate material flow into the reactor. During loading, the material box is supported by a lower support rod close to the connector, placing the connector at its highest point to facilitate material filling the material box by gravity. Meanwhile, the handling components are located on the side of the box, without occupying internal space, completely eliminating the need for traditional screw feeders, pneumatic conveying pumps, and other additional mechanical conveying equipment, thus achieving a highly compact and efficient integration of the entire energy storage unit.

[0016] This invention monitors the suitability of the fluidizing gas velocity in real time based on the material tank filling time and dynamically adjusts it accordingly. Specifically, when the material filling time exceeds a preset process window (determined based on experimental data, with the upper limit corresponding to a reactant loss rate exceeding an allowable threshold and the lower limit corresponding to an unreacted material recovery rate exceeding an allowable threshold), the system automatically determines an abnormal gas velocity. If the filling time is too long, it indicates that the fluidizing gas velocity is too high, leading to difficulty in particle settling, significant fine particle entrainment, and reactant loss. If the filling time is too short, it indicates that the gas velocity is too low, particle settling is too fast, the material residence time in the reactor is insufficient, the reaction conversion rate decreases, and the energy conversion efficiency declines. Through this closed-loop control strategy, the fluidized bed can be ensured to operate within the optimal gas velocity range, achieving synergistic optimization of reaction efficiency and material utilization. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort:

[0018] Figure 1 This is a front view of the present invention;

[0019] Figure 2 This is a schematic diagram of the present invention;

[0020] Figure 3 This is a schematic diagram of the transport component in this invention;

[0021] Figure 4 This is a schematic diagram of the material box in this invention;

[0022] Figure 5 For the present invention Figure 1 Enlarged view of B in the middle;

[0023] Figure 6 For the present invention Figure 1 Enlarged view of A in the middle;

[0024] Figure 7 This is a top view of the material cabinet in this invention.

[0025] In the diagram: 1. Transport vehicle; 2. Cargo box; 3. Air tank; 4. Material box; 401. Box body; 402. Positioning slot; 403. Forklift slot; 404. Clamping block; 405. T-block; 406. Inlet / outlet; 407. Passive lever; 408. Passive gate; 409. Guide channel; 5. Material cabinet; 501. Cabinet frame; 502. Prism; 503. Lifting plate; 504. Wedge block; 6. Fluidized bed reactor; 7. Handling components; 701, slider; 702, support plate; 703, vertical drive; 704, guide rod; 705, lateral drive; 706, telescopic fork; 707, diagonal support; 8, through window; 9, upper support rod; 10, lower support rod; 11, connector; 111, docking channel; 112, active gate; 113, actuator; 114, active lever; 115, T-slot; 12, positioning spring. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1, please refer to Figures 1-4 A circulating feed device for a reactor includes a transport carrier 1 and a material tank 4. The transport carrier 1 carries a gas tank 3, a material cabinet 5, and a fluidized bed reactor 6 via a cargo box 2. Multiple sets of material tanks 4 are stacked on top of the material cabinet 5. The gas tank 3 contains gas, including non-reactive fluidizing gas and reactive fluidizing gas. The fluidized bed reactor 6 has a heat exchange module and a nozzle module. The nozzle module is connected to the gas tank 3. A gas pump is installed between the gas tank 3 and the fluidized bed reactor 6. The nozzle module sprays gas at a certain pressure, causing the reactants in the fluidized bed reactor 6 to fluidize. Under the action of the nozzle module, the material settles slowly in a fluidized state. The heat exchange module is connected to the external heat exchanger through a quick-release connector. When in the energy storage center, the external heat exchanger inputs heat to the heat exchange module, and the heat exchange module heats the reactants to achieve the energy storage reaction. The upper shell of the fluidized reactor 6 is provided with an exhaust port, which is connected to the gas tank 3 through a pipeline. The gas produced by the reaction and the non-reactive fluidized gas flow back to the gas tank 3. When located on the user side or in the park, the external heat exchanger absorbs heat from the heat exchange module, and the heat exchange module removes the heat released during the chemical reaction of the reactants. The upper and lower ends of the fluidized reactor 6 are provided with connectors 11.

[0028] The fluidized bed reactor 6 has slots corresponding to the material boxes 4 at both ends and on the material tank 5. The material box 2 has through windows 8 corresponding to the slots. The side wall of the material box 2 has a conveying assembly 7 with telescopic forks 706 that can slide up, down, left, and right along the side wall of the material box 2. The bottom of the material box 4 has fork slots 403 for the telescopic forks 706 to insert into. The conveying assembly 7 can pull the material box 4 out of one slot and insert it into any other empty slot. When fluidization... After the material box 4 on the feed side of reactor 6 is emptied, the conveying component 7 can pull out the emptied material box 4 and transport the material box 4 filled with reactant on the material cabinet 5 to the feed side of fluidized reactor 6. When the corresponding material box 4 on the discharge side of fluidized reactor 6 is filled with recycled material, the conveying component 7 can pull out the filled material box 4 and transport the emptied material box 4 to the discharge side of fluidized reactor 6. When the material box 4 is inserted into the corresponding slot of fluidized reactor 6, the inner cavity of the material box 4 is connected to fluidized reactor 6 through the connector 11.

[0029] The reactants are transported via flat-shaped material boxes 4, which are then stacked on material cabinets 5. On one hand, the relatively small weight of each material box 4 facilitates handling and transport by the handling components 7. Furthermore, due to the low height of each material box 4, its center of gravity is significantly lower than that of the overall silo after lifting, allowing for effective transport using the reactants' own weight without relying on additional mechanical conveying equipment. The handling components 7 are located on the side of the cargo box 2, thus not occupying internal space. On the other hand, during transport, only one material box 4 needs to be kept empty; the empty material box 4 can then be used to transport recycled materials, maximizing the use of internal space for reactants. This results in a stronger energy transport capacity for a single vehicle, improving energy delivery efficiency and economy.

[0030] The air tank 3 is located on the top of the cargo box 2, corresponding to the position of the material cabinet 5. The end of the air tank 3 is close to the fluidized reactor 6. The air tank 3 has a large span and is located above almost all the equipment, making it easier to install various pipelines. At the same time, the overall weight of the air tank 3 is small, so it will not affect the stability of the transport vehicle 1.

[0031] Please see Figures 4-5 The end of the connector 11 is provided with a T-slot 115. The material box 4 includes a box body 401. The side wall of the box body 401 is provided with a T-block 405 corresponding to the T-slot 115. When the material box 4 is inserted into the slot, the T-block 405 is inserted into the T-slot 115. The opening of the material box 4 is aligned with the opening of the connector 11. In order to facilitate the insertion of the T-block 405 into the T-slot 115, both ends are provided with guide slopes (that is, the T-block 405 is set to taper near the end, and the T-slot 115 is set to expand near the end).

[0032] Please see Figures 1-5The connector 11 is located on one side of the fluidized reactor 6 and is connected to the fluidized reactor 6 via a hose. Elastic bodies are provided between the top of the feed side connector 11 and the top of the cargo box 2, and between the discharge side connector 11 and the bottom of the fluidized reactor 6. These elastic bodies ensure that the connector 11 is aligned. The upper elastic body is a positioning spring 12, whose elastic force keeps the connector 11 tightly against the positioning block. The lower elastic body is integrated into the hose, ensuring that the connector 11 is tightly against the bottom of the fluidized reactor 6. The connector 11 remains aligned, and after the material box 4 is inserted, the connector 11 aligns with the opening of the material box 4 and communicates with the inner cavity of the material box 4. An upper support is provided at the top of the fluidized reactor 6. The upper support rod 9 is eccentrically positioned (offset from the center of gravity of the material box 4) and far from the connector 11. The bottom of the fluidized reactor 6 is provided with a lower support rod 10, which is eccentrically positioned. The bottom of the material box 4 is provided with two positioning grooves 402, which correspond to the upper support rod 9 and the lower support rod 10 respectively. When the material box 4 is inserted, it is supported by the lower support rod 10 or the upper support rod 9. When the telescopic fork 706 lowers its height and retracts, the material box 4 loses the support of the telescopic fork 706 and is supported on one side by the upper support rod 9 or the lower support rod 10. The material box 4 tilts. The upper support rod 9 positions the connector 11 at the lowest point for easy unloading, while the lower support rod 10 positions the connector 11 at the highest point for easy loading. Pressure sensors are provided on both the lower support rod 10 and the upper support rod 9. When the material box 4 is placed on the lower support rod 10 or the upper support rod 9 and tilted, at least one end of the material box 4 is suspended in the air. The pressure sensors can provide feedback on the weight of the material box 4, thereby determining whether the material box 4 is full or empty. For example, if the weight obtained by the controller is G, when G is less than g1, the controller determines that it is empty (corresponding to the material box 4 on the feeding side), and when G is greater than g2, it is determined that it is full (corresponding to the material box 4 on the discharging side). In other embodiments, a level switch can also be used to determine the material status in the material box 4, such as a rotary paddle level switch or a capacitive level switch.

[0033] The connector 11 has a docking channel 111. At the end of the docking channel 111 is an active gate 112 and a driver 113 that drives the active gate 112. When the active gate 112 moves downwards, it closes the docking channel 111 (this is not a specific directional term, but refers only to the direction in which the active gate 112 moves when the docking channel 111 is closed). The side wall of the driver 113 has an active lever 114 that extends into a T-slot 115. The T-block 405 has an inlet / outlet 406, and a passive gate 408 is located within the inlet / outlet 406. The passive gate 408 is connected to a passive lever 407. The end of the block 405 is provided with a guide groove 409 corresponding to the active lever 114. The active lever 114 slides along the guide groove 409. When in position, the active lever 114 is exactly below the passive lever 407. When the active gate 112 opens upward, it drives the passive lever 407 to move, thereby opening the passive gate 408 and connecting the inlet / outlet 406 and the docking channel 111. When the active gate 112 moves downward, the passive lever 407 loses the support of the active lever 114 and resets under the action of elasticity. The docking channel 111 and the inlet / outlet 406 close synchronously. The driver 113 can be a motor or an electromagnet.

[0034] To prevent leakage between the docking channel 111 and the inlet / outlet 406, the T-slot 115 and the T-block 405 need to be kept in close contact. Therefore, there will be significant resistance when inserting the T-block 405 into the T-slot 115. To ensure the insertion of the T-block 405, a locking block 404 is provided in the middle of the positioning slot 402, and a corresponding locking groove is provided in the middle of the telescopic fork 706. The groove depth is appropriate. When the telescopic fork 706 descends a certain height, the locking groove disengages from the locking block 404. When the telescopic fork 706 moves the material box 4, there is a sufficient force to push the T-block 405 into the T-slot 115.

[0035] The transport assembly 7 includes a slider 701, which moves along vertically arranged guide rails. Two sets of guide rails are provided, located on the front and rear sides of the cargo box 2 respectively. A vertical drive member 703 is provided on the cargo box 2, driving the slider 701 to move along the guide rails. A support plate 702 is hinged to the slider 701. A detachable inclined support 707 is also provided between the support plate 702 and the slider 701. During travel, the support plate 702 is folded; upon reaching the destination, the support plate 702 is unfolded, and the inclined support 707 is reinstalled. In other embodiments, the inclined support... The support 707 can be replaced by a hydraulic cylinder to realize the automatic folding and unfolding of the support plate 702. The support plate 702 is provided with a guide rod 704 and a lateral drive member 705. The telescopic fork 706 is slidably connected to the guide rod 704. The lateral drive member 705 and the telescopic fork 706 are connected by transmission. The telescopic fork 706 can extend and retract longitudinally (longitudinal refers to the side perpendicular to the side of the cargo box 2. The telescopic fork 706 is an existing structure and will not be described in detail in this embodiment. In other embodiments, the longitudinal sliding of the support plate 702 can replace the extension and retraction of the telescopic fork 706).

[0036] Please see Figures 5-6 The material cabinet 5 includes a cabinet frame 501 located in the middle. The cabinet frame 501 has four prisms 502 at both the top and bottom. The cabinet frame 501 fits against the material box 4. When the material box 4 moves to the position of the four prisms 502, the material box 4 can slide out laterally along the gaps between the prisms 502. The through window 8 is set at the position where the material box 4 can slide in / out. The bottom of the material cabinet 5 is provided with a lifting plate 503. The bottom of the cabinet frame 501 is provided with a retractable wedge 504. During transportation, the material box 4 is located inside the cabinet frame 501, which can ensure the stability of the material box 4 and does not require additional fixing. When it is necessary to take out the material box 4, the lifting plate 503 lifts the material box 4, pushing the uppermost material box 4 out of the cabinet frame 501 and aligning it with the through window 8. When the material box 4 is put back into the material cabinet 5, the material box 4 is inserted back from the lowest point of the material cabinet 5. Then the lifting plate 503 lifts the material box 4, and the lowermost material box 4 is locked by the wedge 504.

[0037] Example 2: A method of using a circulating feed device for a reactor, wherein the reactor and feed device are used for a reversible chemical reaction to achieve energy storage and release, specifically for the reaction of the following materials:

[0038] Calcium-based energy storage system: using calcium oxide (CaO) as the energy storage medium, thermal energy storage and release are achieved through a hydration / dehydration reaction cycle;

[0039] Magnesium-based energy storage system: using magnesium oxide (MgO) as the energy storage medium, thermal energy storage and release are achieved through a hydration / dehydration reaction cycle;

[0040] Barium-based energy storage system: using barium oxide (BaO) as the energy storage medium, thermal energy storage and release are achieved through a hydration / dehydration reaction cycle;

[0041] Metal hydride system: using magnesium hydride (MgH2) and other energy storage media, thermal energy storage and release are achieved through hydrogenation / dehydrogenation reaction cycles.

[0042] Taking a calcium-based energy storage system as an example, the transport vehicle 1 moves to the centralized energy storage center. At this time, the material box 4 contains Ca(OH)2 powder. The heat exchange module of the fluidized reactor 6 is connected to the heat exchanger of the energy storage center. The heat exchanger uses the heat from the waste heat system or the heat generated by the electric heating system from renewable energy to heat the heat exchange module. The Ca(OH)2 powder in the material box 4 is poured in from the feed side of the fluidized reactor 6. The nozzle module in the fluidized reactor 6 sprays out fluidizing gas, which causes the Ca(OH)2 to flow. The Ca(OH)2 is evenly dispersed and gradually dehydrated as it slowly descends, generating water vapor and CaO powder. The water vapor and fluidizing gas directly enter the gas chamber 3 or are condensed and purified before entering the gas chamber 3. The CaO gradually settles and is collected by the material box 4 below. When the material box 4 is emptied, the conveying component 7 replaces the emptied material box 4 with a new one. When the material box 4 below is full, it is emptied, and this process is repeated until all the calcium hydroxide in the material boxes 4 is converted into calcium oxide, thus completing the energy storage.

[0043] When heat release is required, the gas in gas tank 3 is replaced at the energy storage center. Gas tank 3 contains saturated water vapor and appropriate non-reactive fluidizing gas (gas tank 3 can be composed of two sub-gas tanks, which respectively contain water vapor and non-reactive fluidizing gas, with nitrogen being the preferred non-reactive fluidizing gas). The fluidizing unit is connected to gas tank 3, and the transport vehicle 1 is moved to the user side or park. The heat exchange module of fluidizing reactor 6 is connected to the heat exchanger on the user side or park. At this time, the material box 4 containing CaO powder is sent into the feed side of fluidizing reactor 6. Water vapor and fluidizing gas are sprayed in from the nozzle, causing the CaO powder to fluidize and distribute evenly. CaO and H2O undergo a hydration reaction, generating Ca(OH)2 and a large amount of heat. The heat exchange module absorbs the heat and exchanges heat with the external heat exchanger to release energy. The unreacted nitrogen returns to the gas tank, mixes with water vapor, and continues to participate in the cycle.

[0044] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A circulating feed device for a reactor used in a reversible chemical reaction, comprising a transport vehicle (1) having a cargo box (2) on the transport vehicle (1), the cargo box (2) containing a gas reservoir (3), a material cabinet (5), and a fluidized reactor (6), the gas reservoir (3) being configured to supply the fluidized reactor (6) with process gas that has both fluidization and reaction functions, characterized in that, Multiple sets of flat material boxes (4) are stacked on the material cabinet (5). During transportation, one set of flat material boxes (4) is kept empty for transporting recycled materials, while the remaining material boxes (4) are loaded with reaction materials. The upper and lower ends of the fluidized reactor (6) are provided with connecting joints (11) for material exchange. The side wall of the cargo box (2) is provided with a handling component (7). The handling component (7) is configured to transfer any material box (4) between the material cabinet (5) and the inlet and outlet positions of the fluidized reactor (6), and to replace the empty material box (4) with the material box (4) filled with materials. When the material box (4) is transferred to the corresponding position of the fluidized reactor (6) and docked with it, its inner cavity is connected to the fluidized reactor (6) through the connecting joint (11).

2. A circulating feed device for a reactor according to claim 1, characterized in that, The air bag (3) is located on the top of the cargo box (2) at the position corresponding to the material cabinet (5).

3. A circulating feed device for a reactor according to claim 1, characterized in that, The connector (11) is located on one side of the fluidized reactor (6). The end of the connector (11) is provided with a T-slot (115). The material box (4) includes a box body (401). The side wall of the box body (401) is provided with a T-block (405) corresponding to the T-slot (115).

4. A circulating feed device for a reactor according to claim 3, characterized in that, The fluidized reactor (6) is provided with an upper support rod (9) at the top, which is eccentric and far away from the connector (11). The fluidized reactor (6) is provided with a lower support rod (10) at the bottom, which is eccentric and close to the connector (11). The material box (4) is provided with two positioning grooves (402) at the bottom, which correspond to the upper support rod (9) and the lower support rod (10) respectively.

5. A circulating feed device for a reactor according to claim 4, characterized in that, Pressure sensors are provided on both the lower support rod (10) and the upper support rod (9). When the material box (4) is placed on the lower support rod (10) or the upper support rod (9) and tilted, at least one end of the material box (4) is suspended. The pressure sensor is connected to a controller. The controller determines whether the material box (4) is full or empty based on the weight of the material box (4) fed back by the pressure sensor.

6. A circulating feed device for a reactor according to claim 4, characterized in that, The connector (11) is connected to the fluidized reactor (6) via a hose. An elastic body is provided between the connector (11) on the feed side and the top of the cargo box (2), and between the connector (11) on the discharge side and the bottom of the fluidized reactor (6). The elastic body keeps the connector (11) in a preset position.

7. A circulating feed device for a reactor according to claim 6, characterized in that, The connector (11) is provided with a docking channel (111). The end of the docking channel (111) is provided with an active gate (112) and a driver (113) for driving the active gate (112). The side wall of the driver (113) is provided with an active paddle (114). The active paddle (114) extends into the T-slot (115). The T-block (405) is provided with an inlet and outlet (406). The inlet and outlet (406) is provided with a passive gate (408). The passive gate (408) is connected to a passive paddle (407). The end of the T-block (405) is provided with a guide groove (409) corresponding to the active paddle (114). The active paddle (114) is aligned with the guide groove (409). The passive paddle (407) is provided with a reset spring.

8. A circulating feed device for a reactor according to claim 6, characterized in that, The handling assembly (7) includes a slider (701), which moves along a vertically arranged guide rail. There are two sets of guide rails, located on the front and rear sides of the cargo box (2). A vertical drive (703) is provided on the cargo box (2), which drives the slider (701) to move along the guide rail. The slider (701) is hinged to a support plate (702). A detachable inclined support (707) is also provided between the support plate (702) and the slider (701). A guide rod (704) and a transverse drive (705) are provided on the support plate (702). The guide rod (704) is slidably connected to a telescopic fork (706). The transverse drive (705) and the telescopic fork (706) are connected in a transmission manner.

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