Hydrogen production reactor

Abstract

The utility model provides a kind of hydrogen production reaction kettle, including reaction kettle main body, reaction kettle main body includes reaction bin, and liquid feeding opening and granule feeding opening are provided on reaction bin, including controller, multiple switch valves and multistage feeding pipe, controller is connected with multiple switch valves signal respectively, and granular reactant is sent into reaction bin by the cooperation of multistage feeding pipe;In multistage feeding pipe, the first end height of each stage feeding pipe is higher than the end height of feeding pipe, according to the transport path of granular reactant sorting, the first end of first stage feeding pipe is provided with a switch valve, two adjacent stages of feeding pipe are connected by a switch valve, and the end of last stage feeding pipe is connected with granule feeding opening by a switch valve;The volume of two adjacent stages of feeding pipe is not mutually same.The hydrogen production reaction kettle realizes the function of time-sharing, segmented, quantitative feeding of solid granular reactant by the design of low-cost feeding system.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen production equipment technology, specifically to a hydrogen production reactor. Background Technology

[0002] Hydrogen, as a clean energy carrier, has wide applications in chemical, metallurgical, and energy fields. In chemical hydrogen production processes, solid particulate reactants and liquid reactants typically need to be reacted in a reaction vessel. In real-time hydrogen production applications, dynamic replenishment of both solid particulate reactants and liquid reactants is required. Common methods for replenishing solid particulate reactants include quantitative compensation using equipment such as loss-in-weight feeders, volumetric feeders, and weighing batching systems.

[0003] In industrial real-time hydrogen production, due to the large scale of the reactor, it is often not necessary to control the amount of solid particulate reactants added with great precision. Therefore, a lower-cost implementation structure is needed for the solid particulate reactant filling equipment. Utility Model Content

[0004] This utility model discloses a hydrogen production reactor, which achieves the function of time-sharing, segmented, and quantitative addition of particulate reactants through the design of a low-cost feeding system.

[0005] Accordingly, this utility model provides a hydrogen production reactor, including a reactor body, the reactor body including a reaction chamber, the reaction chamber being provided with a liquid feeding port and a particle feeding port, including a controller, multiple switching valves and a multi-stage feeding pipe, the controller being signal-connected to the multiple switching valves respectively, and the particle reactants being fed into the reaction chamber through the cooperation of the multi-stage feeding pipe; In the multi-stage feeding pipe, the height of the first end of each feeding pipe is higher than the height of the last end of the feeding pipe. The feeding pipe is arranged according to the transport path of the particulate reactants. A switch valve is provided at the first end of the first-stage feeding pipe. The two adjacent feeding pipes are connected by a switch valve. The last feeding pipe is connected to the particulate feed port by a switch valve at its end. The volumes of adjacent feeding pipes are different.

[0006] In an optional implementation, the feeding tube has two stages.

[0007] In an optional implementation, the volume of the first-stage feeding pipe is greater than the volume of the last-stage feeding pipe in the multi-stage feeding pipe.

[0008] In an optional implementation, the volume ratio of the first-stage feeding pipe to the last-stage feeding pipe is 3:2.

[0009] In an optional embodiment, the cross-section of the feeding tube is an annular structure.

[0010] In an optional implementation, all the feeding pipes have the same diameter.

[0011] In an optional embodiment, a spiral chute is provided in the reaction chamber, with the first end of the spiral chute corresponding to the particle feeding port; The spiral slide has a U-shaped cross-section, and the outer wall of the spiral slide has feeding notches at preset intervals.

[0012] In an optional implementation, a feeding funnel is provided between the first end of the spiral chute and the particle feeding port; The upper opening of the feeding funnel is directly opposite the particle feeding port, and the lower opening of the feeding funnel is directly opposite the beginning of the spiral slide.

[0013] In an optional embodiment, the reactor body further includes a stirring shaft and a stirring paddle, wherein the stirring shaft is arranged vertically inside the reaction chamber, and the stirring paddle is fixed on the stirring shaft; The spiral slide is arranged around the stirring shaft.

[0014] In summary, this utility model's hydrogen production reactor utilizes a low-cost feeding system designed with switching valves and multi-stage feeding pipes, enabling the time-sharing, segmented, and quantitative addition of particulate reactants. The non-uniform volume design of adjacent feeding pipes with varying volumes provides multiple combinations of feeding rates, enhancing the flexibility of the feeding strategy. The inclined, circular, equal-diameter pipes combined with anti-sticking coated valves fundamentally solve the problem of particulate material bridging and blockage. The innovative combination of a spiral slide, U-shaped cross-section, and equidistant feeding notches ensures uniform dispersion of particulate material within space, significantly improving reaction sufficiency and hydrogen yield when combined with the stirring system. The overall structure is compact and rational, achieving automation and intelligence in the hydrogen production process at low cost, and ensuring the stability of real-time hydrogen production. Attached Figure Description

[0015] Figure 1 This is a three-dimensional structural diagram of the hydrogen production reactor according to an embodiment of the present invention.

[0016] Figure 2 This is a cross-sectional structural diagram of the hydrogen production reactor according to an embodiment of the present invention. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0018] Figure 1 This is a three-dimensional structural diagram of the hydrogen production reactor according to an embodiment of the present invention. Figure 2 This is a cross-sectional structural diagram of the hydrogen production reactor according to an embodiment of the present invention, wherein... Figure 2 In the cross-sectional structure, the structure of the funnel and the spiral slide is the original structural outline to ensure the clarity of the illustration.

[0019] This utility model discloses a hydrogen production reactor, including a reactor body, the reactor body including a reaction chamber 3 for containing reactants.

[0020] The reaction chamber 3 has a liquid inlet and a particle inlet. Generally, the particle inlet is located at the top of the reaction chamber 3, and the liquid inlet is located in the middle or lower part of the reaction chamber 3.

[0021] In the hydrogen production reactor of this utility model embodiment, the reactor also includes a controller, multiple switching valves 2 and a multi-stage feeding pipe 1, which together form a solid particulate feeding system.

[0022] The controller is a programmable logic controller or an industrial computer. It establishes signal connections with each switch valve 2 via control cables or wireless communication to form an open-loop control system. The controller has a built-in feeding control program, which can control the opening and closing sequence of each valve according to the preset program. Through the volume coordination of the multi-stage feeding pipes 1, the particulate reactants are fed into the reaction chamber 3 as needed, in stages, and in quantities.

[0023] The multi-stage feeding pipe 1 is a series-connected inclined pipe system.

[0024] In each feeding pipe 1, the feeding pipe 1 is installed with the height of the first end higher than the height of the last end, forming a downward inclined conveying channel. Gravity is used to achieve smooth conveying of granular materials without the need for additional conveying power, and at the same time, it can effectively prevent material backflow and pipeline blockage. In actual implementation, there may be some residual granular material in the feeding pipe 1, but the proportion of this part of the granular material is small and will not affect the normal operation of the feeding system.

[0025] Specifically, according to the transport path of the particulate reactants, a switch valve 2 is installed at the beginning of the first-stage feed pipe 1 as the main feed control valve; adjacent feed pipes 1 are connected by a switch valve 2, which also serves as the discharge valve of the preceding feed pipe 1 and the feed valve of the following feed pipe 1; the end of the final feed pipe 1 is connected to the particle feed port by a switch valve 2 as the final feed control valve. All switch valves 2 are electric or pneumatic butterfly valves, featuring fast response, good sealing, and wear resistance. The inner wall of the valve body is treated with an anti-stick coating, suitable for contact with solid particulate materials.

[0026] Specifically, in the application of this utility model embodiment, the volumes of two adjacent feeding pipes 1 are different. This non-uniform volume design structure allows each feeding pipe 1 to accommodate different amounts of particulate material. By selectively opening different combinations of valves through the controller, multiple feeding modes and feeding amounts can be combined and controlled, overcoming the limitation of the single feeding amount in the traditional single-stage feeding system.

[0027] As a preferred embodiment of the hydrogen production reactor of this utility model, the feeding pipe 1 has two stages, that is, the first-stage feeding pipe 1 and the last-stage feeding pipe 1 constitute the simplest graded feeding system. The two-stage design achieves the basic graded feeding function while maintaining the simplicity and cost-effectiveness of the system.

[0028] Furthermore, in the multi-stage feeding pipe 1, the volume of the first-stage feeding pipe 1 is larger than that of the last-stage feeding pipe 1. On the one hand, this design enables the system to achieve both large-capacity initial feeding and small-capacity supplementary feeding, adapting to the differentiated feeding requirements at different stages of the reaction process. On the other hand, through the combined control of the switching valves 2, after the solid particles in the last-stage feeding pipe 1 are first fed, the solid particles in the first-stage feeding pipe 1 are fed into the last-stage feeding pipe 1. At this time, the volume of solid particles in the last-stage feeding pipe 1 is the volume difference between the two-stage feeding pipes 1, thus realizing the addition of a third volume of solid particles through the two-stage feeding pipes 1, forming the most basic volume control extension function.

[0029] Furthermore, the volume ratio of the first-stage feed pipe 1 to the last-stage feed pipe 1 is set to 3:2 (actual capacity 3v:2v). The volume difference between the two is approximately 1v. If the volume of the last-stage feed pipe 1 is considered as the normal addition amount of solid particles, the volume of the first-stage feed pipe 1 is equivalent to the additional compensation amount required, and the volume difference between the two is equivalent to the temporary compensation amount. In actual implementation, solid particles first enter the first-stage feed pipe 1. Two of the three portions of solid particles in the first-stage feed pipe 1 are first sent to the last-stage feed pipe 1. At this time, there is still one portion of solid particles remaining in the last-stage feed pipe 1. After the solid particles in the last-stage feed pipe 1 are normally added to the reaction chamber 3, depending on the reaction situation in the reaction chamber 3, one, two, or three portions of solid particles can be added to the reaction chamber 3 in the next cycle, achieving a relatively controllable quantitative control.

[0030] In terms of pipeline structure design, the cross-section of the feeding pipe 1 is a circular ring structure, i.e., a circular pipe is used. The inner wall of a circular pipe has no dead corners, resulting in minimal material flow resistance, preventing material accumulation, and facilitating manufacturing at a lower cost. In practical applications, finished circular pipes (such as PVC pipes or steel pipes) can be directly purchased and cut, significantly reducing the manufacturing cost of the feeding system.

[0031] For compatibility reasons, all feed pipes 1 have the same diameter, i.e., the inner diameter is consistent. This equal-diameter design allows for direct connection between feed pipes 1 at each stage via standard flanges or quick-connect fittings, resulting in a high degree of standardization in the piping system, convenient installation and maintenance, and also facilitating the selection and replacement of the switching valves 2. In practical implementation, different volume designs can be achieved by varying the cutting length of the feed pipes 1 (e.g., in this embodiment, the ratio of the length of the first-stage feed pipe to the length of the last-stage feed pipe is 2V+1V:2V).

[0032] To achieve uniform dispersion of particulate reactants within the reaction chamber 3, this invention incorporates a spiral chute 5 within the reaction chamber 3. The spiral chute 5 is fixed to the inner wall of the reaction chamber 3 by a support and extends spirally from top to bottom. The first end of the spiral chute 5 corresponds to the particle feeding port, receiving particulate material from the feeding pipe 1. After entering the spiral chute 5, the particulate material slides down along the spiral path, changing the traditional free-fall concentrated descent method. The spiral chute 5 has a U-shaped cross-section with a flat bottom and vertical sidewalls. The U-shaped cross-section provides a stable sliding channel for the particulate material. Discharge notches 6 are evenly spaced on the outer side wall of the spiral chute 5 at predetermined intervals. During the sliding process, when the particulate material passes through the discharge notches 6, it randomly falls from the notches. Through this design, the particulate material is dispersed to different areas of the reaction chamber 3, achieving uniform spatial distribution, effectively preventing material accumulation, and promoting a complete reaction.

[0033] As a preferred embodiment, a discharge funnel 4 is provided between the first end of the spiral chute 5 and the particle feeding port. The upper opening of the discharge funnel 4 is directly opposite the particle feeding port, and its lower opening is directly opposite the first end of the spiral chute 5. The discharge funnel 4 serves as a buffer and guide, converting the concentrated particle flow from the feeding pipe 1 into a uniform material curtain, smoothly transitioning it to the spiral chute 5, and avoiding splashing and chute blockage caused by material impact.

[0034] The reactor body also includes a stirring system, specifically a stirring shaft 7 and a stirring paddle. The stirring shaft 7 is vertically positioned at the center of the reaction chamber 3 and is driven to rotate by a drive motor mounted on the top of the reactor via a reducer. The stirring paddle is fixed to the stirring shaft 7 via a connector, and one or more paddle blades 8 can be installed depending on the height of the reaction chamber 3. The spiral slide 5 is arranged around the stirring shaft 7, that is, the centerline of the spiral slide 5 coincides with the axis of the stirring shaft 7, and the inner side of the slide maintains an appropriate gap with the stirring shaft 7. This coaxial arrangement allows the particulate material falling from the slide opening to fall evenly into the stirring range of the stirring paddle, and further disperses rapidly under the stirring action. At the same time, the presence of the spiral slide 5 does not affect the normal rotation of the stirring system.

[0035] The working process of the hydrogen production reactor in this embodiment of the utility model is as follows: The controller first opens the valve at the beginning of the primary feed pipe 1, and the particulate reactants enter from the silo by gravity and fill the primary feed pipe 1; for the first start-up, it is possible to directly open all valves for a period of time, and then let the solid particles directly enter the reaction chamber 3. After the reaction starts, the controller controls the opening and closing of each valve according to the signals fed back by the reaction temperature and pressure sensors, following a preset program. For example, the valve between the first stage and the last stage can be opened first to use the smaller volume of the last stage feed pipe 1 for precise small-dose supplementation; when the reaction rate decreases and the feed amount needs to be increased, the first stage valve can be opened to use the larger volume of the first stage for large-dose feed; different valves can also be opened in combination to achieve more complex feed strategies.

[0036] After entering reaction chamber 3, the particulate material first falls into the feed hopper 4, and after buffering, transitions to the spiral chute 5. As the material slides down the spiral chute 5, it falls sequentially at the equidistant feed notches 6, dispersing to different radial positions within reaction chamber 3. Simultaneously, the stirring shaft 7 drives the stirring paddle to rotate, forcibly mixing the reaction liquid and particulate material, ensuring that each particle fully contacts the liquid reactants, thereby improving reaction efficiency and hydrogen yield.

[0037] In summary, the hydrogen production reactor of this invention utilizes a low-cost feeding system designed with switching valves and multi-stage feeding pipes, enabling the time-sharing, segmented, and quantitative addition of particulate reactants. The non-uniform volume design of adjacent feeding pipes 1 provides multiple combinations of feeding amounts, enhancing the flexibility of the feeding strategy. The inclined circular equal-diameter pipes combined with anti-sticking coated valves fundamentally solve the problem of particulate material bridging and blockage. The innovative combination of the spiral slide 5 with the U-shaped cross-section and equidistant feeding notches 6 ensures uniform dispersion of particulate materials in space, significantly improving reaction sufficiency and hydrogen yield in conjunction with the stirring system. The overall structure is compact and reasonable, achieving automation and intelligence in the hydrogen production process at low cost, and ensuring the stability of real-time hydrogen production.

[0038] This document uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. A hydrogen production reactor, comprising a reactor body, the reactor body including a reaction chamber, the reaction chamber being provided with a liquid inlet and a particle inlet, characterized in that, It includes a controller, multiple switching valves, and a multi-stage feeding pipe. The controller is connected to the multiple switching valves and the particulate reactants are fed into the reaction chamber through the cooperation of the multi-stage feeding pipe. In the multi-stage feeding pipe, the height of the first end of each feeding pipe is higher than the height of the last end of the feeding pipe. The feeding pipe is arranged according to the transport path of the particulate reactants. A switch valve is provided at the first end of the first-stage feeding pipe. The two adjacent feeding pipes are connected by a switch valve. The last feeding pipe is connected to the particulate feed port by a switch valve at its end. The volumes of adjacent feeding pipes are different.

2. The hydrogen production reactor as described in claim 1, characterized in that, The feeding tube has two stages.

3. The hydrogen production reactor as described in claim 2, characterized in that, In the multi-stage feeding pipe, the volume of the first-stage feeding pipe is greater than the volume of the last-stage feeding pipe.

4. The hydrogen production reactor as described in claim 3, characterized in that, The volume ratio of the first-stage feeding pipe to the last-stage feeding pipe is 3:

2.

5. The hydrogen production reactor as described in claim 1, characterized in that, The feed tube has a circular cross-section.

6. The hydrogen production reactor as described in claim 5, characterized in that, All of the feeding pipes have the same diameter.

7. The hydrogen production reactor as described in claim 1, characterized in that, A spiral chute is provided in the reaction chamber, and the first end of the spiral chute corresponds to the particle feeding port. The spiral slide has a U-shaped cross-section, and the outer wall of the spiral slide has feeding notches at preset intervals.

8. The hydrogen production reactor as described in claim 7, characterized in that, A feeding funnel is provided between the first end of the spiral slide and the particle feeding port; The upper opening of the feeding funnel is directly opposite the particle feeding port, and the lower opening of the feeding funnel is directly opposite the beginning of the spiral slide.

9. The hydrogen production reactor as described in claim 7, characterized in that, The main body of the reactor also includes a stirring shaft and a stirring paddle. The stirring shaft is arranged vertically inside the reaction chamber, and the stirring paddle is fixed on the stirring shaft. The spiral slide is arranged around the stirring shaft.

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