Solution mixing device for hydrogen production by methanol low-temperature aqueous phase reforming

Abstract

The utility model belongs to the technical field of methanol hydrogen production, and particularly relates to a solution mixing device for methanol low-temperature aqueous phase reforming hydrogen production. Comprising a solution mixing tank, the solution mixing tank is fixedly arranged on a supporting frame, the solution mixing tank is used for mixing hydrogen production solutions, and the supporting frame is used for supporting the solution mixing tank. By arranging the liquid inlet pipe, the fixed cylinder, the rotary column, the capacity tank, the servo motor and the measuring cylinder, a hydrogen production solution can be divided into multiple times and equivalently conveyed into the solution mixing tank to be mixed with other hydrogen production solutions, so that the capacity of the hydrogen production solution added into the solution mixing tank can be accurate; and the hydrogen production solution can be quickly and uniformly mixed with other hydrogen production solutions in the solution mixing tank after being added for multiple times, so that the frequency of repeatedly stirring the hydrogen production solution in the solution mixing tank is reduced, and the mixing efficiency of the multiple hydrogen production solutions can be further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydrogen production from methanol, in particular to a solution mixing device for low-temperature aqueous-phase reforming of methanol to produce hydrogen. Background Technique

[0002] As a clean secondary energy source, hydrogen energy has great development potential and has attracted extensive attention from countries around the world. At present, hydrogen fuel cells are one of the new technology platforms for the efficient and clean utilization of hydrogen energy. However, to make full use of hydrogen energy, a series of problems including hydrogen production and hydrogen storage need to be overcome. However, if the hydrogen production raw materials can be sent to the terminal using existing energy transportation facilities and hydrogen can be produced in-situ, the disadvantages brought by hydrogen storage can be largely avoided. Among them, using liquid fuels such as methanol, ethanol, and gasoline to produce hydrogen through steam reforming for fuel cell power generation is considered one of the most feasible ways. In comparison, methanol has become the preferred hydrogen production raw material due to its advantages such as low cost, sulfur-free, high energy density, and low reaction temperature.

[0003] In recent years, transition metal carbides have become a research hotspot due to their unique electronic structure and excellent catalytic performance. Among them, molybdenum carbide-based catalysts have received extensive attention because of their very high catalytic activity in the methanol reforming to produce hydrogen reaction. And the steps for making hydrogen are as follows: dispersing a platinum metal compound, a molybdenum metal compound, and mesoporous zinc oxide in water to obtain a mixed solution; heating and stirring the mixed solution to evaporate and remove water, then performing vacuum drying and calcination to obtain a solid product; successively grinding, pressing, and screening the solid product into particles; reducing the solid product after particle screening, and the reducing gases include one or several combinations of H2, CO, 5% H2 / Ar, and 5% CO / Ar.

[0004] In the above hydrogen production steps, dispersing the platinum metal compound, the molybdenum metal compound, and mesoporous zinc oxide in water to obtain a mixed solution requires the use of a solution mixing device to ensure uniform mixing of various hydrogen production solutions. In the preparation process of the mixed solution, various hydrogen production solutions are usually sequentially put into the solution mixing device for stirring. Although this process is simple and convenient, the one-time mixing of various hydrogen production solutions requires repeated stirring of the mixed solution, and the repeated stirring of the mixed solution will result in poor mixing efficiency between the mixed solutions.

[0005] Therefore, we propose a solution mixing device for low-temperature aqueous-phase reforming of methanol to produce hydrogen to solve the above problems. Content of the Utility Model

[0006] (1) Technical Problems to be Solved

[0007] In view of the deficiencies of the prior art, the present utility model provides a solution mixing device for hydrogen production by low-temperature aqueous-phase reforming of methanol, which solves the problems raised in the above-mentioned background art.

[0008] (II) Technical solution

[0009] The present utility model specifically adopts the following technical solutions to achieve the above purposes:

[0010] A solution mixing device for hydrogen production by low-temperature aqueous-phase reforming of methanol, including a solution mixing tank, the solution mixing tank is fixedly arranged on a support frame, the solution mixing tank is used for mixing the hydrogen production solution, the support frame is used for supporting the solution mixing tank, a feed pipe is fixedly arranged on the solution mixing tank, and the feed pipe is used for adding the hydrogen production solution into the solution mixing tank for mixing;

[0011] A liquid inlet pipe, fixedly connected to the feed pipe by bolts, is used for transporting the hydrogen production solution to the feed pipe. A fixed cylinder is fixedly arranged at the top end of the liquid inlet pipe. A rotating column is rotatably arranged in the fixed cylinder. The diameter of the rotating column is adapted to the inner diameter of the fixed cylinder. A capacity groove is arranged on the rotating column. A servo motor is fixedly arranged on the fixed cylinder, and the output end of the servo motor is docked with the rotating column;

[0012] A measuring cylinder, fixedly arranged on the fixed cylinder, is used for measuring the capacity of the hydrogen production solution transported into the fixed cylinder. The measuring cylinder is communicated with the fixed cylinder, and a feed hopper is fixedly arranged at the top end of the measuring cylinder.

[0013] Further, a sealing door is rotatably arranged on the solution mixing tank, and cylinders are arranged on both sides of the solution mixing tank. Both ends of the cylinders are respectively rotatably connected to the solution mixing tank and the sealing door.

[0014] Further, a locking hook is fixedly arranged on the sealing door, and a plurality of locking hooks are arranged. A plurality of locking buckles are fixedly arranged on the solution mixing tank, and the positions of the plurality of locking buckles respectively correspond to the positions of the plurality of locking hooks.

[0015] Further, a fixing frame is fixedly arranged on the support frame, a speed reducer is fixedly arranged on the fixing frame, a driving motor is fixedly arranged on the speed reducer, and the output end of the driving motor is docked with the speed reducer.

[0016] Further, a stirring shaft is rotatably arranged in the solution mixing tank, the output end of the speed reducer is docked with the stirring shaft, stirring rods are fixedly arranged on the stirring shaft, and blade plates are fixedly arranged at the ends of the stirring rods far away from the stirring shaft.

[0017] Further, a pressure relief valve is fixedly arranged on the upper end face of the solution mixing tank, a discharge pipe is fixedly arranged on the lower end face of the solution mixing tank, and a control valve is arranged on the discharge pipe.

[0018] (3) Beneficial effects

[0019] Compared with the prior art, the present utility model provides a solution mixing device for hydrogen production by low-temperature aqueous phase reforming of methanol, having the following beneficial effects:

[0020] In the present utility model, through the settings of the liquid inlet pipe, fixed cylinder, rotating column, capacity tank, servo motor, and measuring cylinder, the hydrogen production solution can be transported into the solution mixing tank in multiple equal amounts and mixed with other hydrogen production solutions. This can not only make the capacity of the hydrogen production solution added to the solution mixing tank accurate, thus making the mixing between various hydrogen production solutions more uniform, but also the multiple additions of the hydrogen production solution can be quickly and evenly mixed with other hydrogen production solutions in the solution mixing tank, thereby reducing the number of times of stirring the hydrogen production solution in the solution mixing tank, and further improving the mixing efficiency between various hydrogen production solutions. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0022] Figure 2 is a schematic diagram of the overall internal structure of the solution mixing tank of the present utility model;

[0023] Figure 3 is a sectional view of the fixed cylinder of the present utility model;

[0024] Figure 4 For the present utility model Figure 1 is an enlarged view of part A in

[0025] In the figure: 1, solution mixing tank; 2, support frame; 3, feed pipe; 4, liquid inlet pipe; 5, fixed cylinder; 6, rotating column; 7, capacity tank; 8, servo motor; 9, measuring cylinder; 10, feed hopper; 11, pressure relief valve; 12, discharge pipe; 13, sealing door; 14, cylinder; 15, locking hook; 16, locking buckle; 17, fixing frame; 18, reducer; 19, driving motor; 20, stirring shaft; 21, stirring rod; 22, blade plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0027] Embodiment

[0028] As Figures 1-4As shown in the figure, a solution mixing device for methanol low-temperature aqueous phase reforming to produce hydrogen proposed by an embodiment of the present utility model includes a solution mixing tank 1. The solution mixing tank 1 is fixedly arranged on a support frame 2. The solution mixing tank 1 is used for mixing the hydrogen production solution, and the support frame 2 is used to support the solution mixing tank 1. A feed pipe 3 is fixedly arranged on the solution mixing tank 1, and the feed pipe 3 is used to add the hydrogen production solution into the solution mixing tank 1 for mixing;

[0029] A liquid inlet pipe 4 is fixedly connected to the feed pipe 3 by bolts and is used to transport the hydrogen production solution to the feed pipe 3. A fixed cylinder 5 is fixedly arranged at the top end of the liquid inlet pipe 4. A rotating column 6 is rotatably arranged in the fixed cylinder 5. The diameter of the rotating column 6 is adapted to the inner diameter of the fixed cylinder 5. A capacity groove 7 is formed on the rotating column 6. A servo motor 8 is fixedly arranged on the fixed cylinder 5, and the output end of the servo motor 8 is docked with the rotating column 6;

[0030] A measuring cylinder 9 is fixedly arranged on the fixed cylinder 5 and is used to measure the capacity of the hydrogen production solution transported into the fixed cylinder 5. The measuring cylinder 9 is communicated with the fixed cylinder 5. A feed hopper 10 is fixedly arranged at the top end of the measuring cylinder 9.

[0031] Through the settings of the liquid inlet pipe 4, the fixed cylinder 5, the rotating column 6, the capacity groove 7, the servo motor 8, and the measuring cylinder 9, the hydrogen production solution can be transported into the solution mixing tank 1 in multiple equal amounts and mixed with other hydrogen production solutions. This can not only make the capacity of the hydrogen production solution added to the solution mixing tank 1 accurate, thus making the mixing of various hydrogen production solutions more uniform, but also the multiple additions of the hydrogen production solution can be quickly and evenly mixed with other hydrogen production solutions in the solution mixing tank 1, thereby reducing the number of times of stirring the hydrogen production solution in the solution mixing tank 1, and further improving the mixing efficiency of various hydrogen production solutions.

[0032] A sealing door 13 is rotatably arranged on the solution mixing tank 1. Cylinders 14 are arranged on both sides of the solution mixing tank 1. Two ends of each cylinder 14 are respectively rotatably connected to the solution mixing tank 1 and the sealing door 13. A locking hook 15 is fixedly arranged on the sealing door 13, and there are multiple locking hooks 15. Multiple locking buckles 16 are fixedly arranged on the solution mixing tank 1, and the positions of the multiple locking buckles 16 respectively correspond to the positions of the multiple locking hooks 15.

[0033] Through the settings of the sealing door 13 and the cylinders 14, the sealing door 13 can be flipped on the solution mixing tank 1, which provides convenience for cleaning the inside of the solution mixing tank 1. In addition, through the settings of the locking buckles 16 and the locking hooks 15, the sealing door 13 can be locked to prevent the sealing door 13 from automatically opening when the solution mixing tank 1 is in operation due to a control error, thus affecting the normal operation of the device.

[0034] A fixing bracket 17 is fixedly arranged on the support bracket 2. A speed reducer 18 is fixedly arranged on the fixing bracket 17. A driving motor 19 is fixedly arranged on the speed reducer 18. The output end of the driving motor 19 is docked with the speed reducer 18. A stirring shaft 20 is rotatably arranged in the solution mixing tank 1. The output end of the speed reducer 18 is docked with the stirring shaft 20. Stirring rods 21 are fixedly arranged on the stirring shaft 20. Blade plates 22 are fixedly arranged at one ends of the stirring rods 21 far away from the stirring shaft 20.

[0035] By arranging the speed reducer 18, the rotation speed output by the driving motor 19 can be reduced, so as to drive the stirring rod 21 to be in a reasonable rotation speed state. The arrangement of the blade plates 22 can not only roll the hydrogen production solution in the solution mixing tank 1, thereby improving the stirring and mixing effect of the mixed liquid in the solution mixing tank 1, but also scrape off the hydrogen production solution bottom material attached to the inner wall surface of the solution mixing tank 1, so as to play a role in cleaning the inner wall surface of the solution mixing tank 1.

[0036] A pressure relief valve 11 is fixedly arranged on the upper end surface of the solution mixing tank 1. A discharge pipe 12 is fixedly arranged on the lower end surface of the solution mixing tank 1. A control valve is arranged on the discharge pipe 12. The arrangement of the pressure relief valve 11 can release the high pressure in the solution mixing tank 1. The arrangement of the discharge pipe 12 and the control valve can discharge the mixed hydrogen production solution in the solution mixing tank 1 at a certain flow rate from the solution mixing tank 1.

[0037] The working principle of this utility model: When it is necessary to mix various hydrogen production solutions in the solution mixing tank 1, start the driving motor 19. The speed reducer 18 reduces the rotation speed output by the driving motor 19, so as to drive the stirring rod 21 to be in a reasonable rotation speed state. By driving the stirring shaft 20 to rotate, the rotation of the stirring shaft 20 drives the rotation of the stirring rods 21 and the blade plates 22. During the rotation of the blade plates 22, the hydrogen production solution in the solution mixing tank 1 will be rolled. In addition, when the blade plates 22 rotate, the hydrogen production solution bottom material attached to the inner wall surface of the solution mixing tank 1 will be scraped off. When it is necessary to add hydrogen production solution to the solution mixing tank 1, first add hydrogen production solution into the measuring cylinder 9, and then start the servo motor 8. The start of the servo motor 8 drives the rotating column 6 to rotate. When the capacity groove 7 on the rotating column 6 rotates to the upper side, the hydrogen production solution in the measuring cylinder 9 will fill the capacity groove 7. When the filled capacity groove 7 rotates to the lower side inside the fixed cylinder 5, the hydrogen production solution in the capacity groove 7 will be transported into the liquid inlet pipe 4, and the hydrogen production solution in the liquid inlet pipe 4 will be transported into the solution mixing tank 1.

[0038] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A solution mixing device for producing hydrogen by low-temperature aqueous phase reforming of methanol, comprising a solution mixing tank (1), characterized in that: The solution mixing tank (1) is fixedly arranged on a support frame (2), the solution mixing tank (1) is used to mix a hydrogen production solution, the support frame (2) is used to support the solution mixing tank (1), a feed pipe (3) is fixedly arranged on the solution mixing tank (1), and the feed pipe (3) is used to add the hydrogen production solution into the solution mixing tank (1) for mixing; The liquid inlet pipe (4) is fixedly connected to the feed pipe (3) by bolts and is used to transport the hydrogen production solution to the feed pipe (3). A fixed cylinder (5) is fixedly arranged at the top of the liquid inlet pipe (4). A rotating column (6) is rotatably arranged inside the fixed cylinder (5). The diameter of the rotating column (6) is matched with the inner diameter of the fixed cylinder (5). A capacity groove (7) is opened on the rotating column (6). A servo motor (8) is fixedly arranged on the fixed cylinder (5). The output end of the servo motor (8) is connected to the rotating column (6). The measuring cylinder (9) is fixedly arranged on the fixed cylinder (5) and is used to measure the volume of the hydrogen production solution transported to the fixed cylinder (5). The measuring cylinder (9) is in communication with the fixed cylinder (5), and a feed hopper (10) is fixedly arranged at the top of the measuring cylinder (9).

2. A solution mixing device for producing hydrogen by low-temperature aqueous phase reforming of methanol according to claim 1, characterized in that: A sealing door (13) is rotatably provided on the solution mixing tank (1), and cylinders (14) are provided on both sides of the solution mixing tank (1), and the two ends of the cylinder (14) are rotatably connected to the solution mixing tank (1) and the sealing door (13) respectively.

3. A solution mixing device for producing hydrogen by low-temperature aqueous phase reforming of methanol according to claim 2, characterized in that: A locking hook (15) is fixedly provided on the sealing door (13), and a plurality of the locking hooks (15) are provided. A plurality of lock buckles (16) are fixedly provided on the solution mixing tank (1), and the positions of the plurality of lock buckles (16) respectively correspond to the positions of the plurality of locking hooks (15).

4. A solution mixing device for producing hydrogen by low-temperature aqueous phase reforming of methanol according to claim 1, characterized in that: A fixing frame (17) is fixedly arranged on the support frame (2), a reducer (18) is fixedly arranged on the fixing frame (17), a driving motor (19) is fixedly arranged on the reducer (18), and an output end of the driving motor (19) is connected to the reducer (18).

5. A solution mixing device for producing hydrogen by low-temperature aqueous phase reforming of methanol according to claim 4, characterized in that: A stirring shaft (20) is rotatably arranged in the solution mixing tank (1), the output end of the reducer (18) is connected to the stirring shaft (20), a stirring rod (21) is fixedly arranged on the stirring shaft (20), and a blade (22) is fixedly arranged at one end of the stirring rod (21) away from the stirring shaft (20).

6. A solution mixing device for producing hydrogen by low-temperature aqueous phase reforming of methanol according to claim 1, characterized in that: A pressure relief valve (11) is fixedly arranged on the upper end surface of the solution mixing tank (1), a discharge pipe (12) is fixedly arranged on the lower end surface of the solution mixing tank (1), and a control valve is arranged on the discharge pipe (12).

Images