Water evaporation drying device for hydrogen production through methanol low-temperature water phase reforming

Abstract

The utility model belongs to the technical field of methanol hydrogen production, and particularly relates to a water evaporation drying device for methanol low-temperature water phase reforming hydrogen production. Comprising a moisture evaporation drum box, a preheating mixing box is arranged on the moisture evaporation drum box, and the moisture evaporation drum box is used for evaporating mixed liquid for hydrogen production. Through mutual cooperation of the preheating mixing box, the connecting box, the heating cavity, the supporting block, the one-way air valve and the rotating vane, water vapor generated by heating evaporation in the water evaporation barrel box can be collected, and heat generated by the water vapor is used for preheating mixed liquid to be evaporated in the preheating mixing box; in this way, the evaporation time of the hydrogen production mixed liquid can be shortened, the evaporation efficiency of the hydrogen production mixed liquid is improved, heat energy generated when the hydrogen production mixed liquid is evaporated to dryness can be recycled, the energy-saving effect is achieved, in addition, the hydrogen production mixed liquid in the preheating mixing box can be automatically turned up in the preheating process, and the energy-saving effect is achieved. Therefore, the preheating in the preheating mixing box is uniform.

Description

Technical Field

[0001] The utility model relates to the technical field of methanol hydrogen production, and particularly relates to a water evaporation device for methanol low-temperature aqueous phase reforming hydrogen production. Background Technique

[0002] As a clean secondary energy source, hydrogen energy has great development potential and has attracted wide 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 by using existing energy transportation facilities and hydrogen can be produced in-situ, the disadvantages brought by hydrogen storage can be avoided to a great extent. Among them, using liquid fuels such as methanol, ethanol, and gasoline to produce hydrogen through steam reforming for fuel cell power generation is considered to be 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 hydrogen production 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 water, then performing vacuum drying and calcination to obtain a solid product; successively grinding, tabletting, and screening the solid product; reducing the solid product after screening, and the reducing gas includes one or several combinations of H2, CO, 5% H2 / Ar, and 5% CO / Ar.

[0004] In the above hydrogen production steps, the evaporation of water from the hydrogen production mixed solution requires the use of a water evaporation device. The commonly used water evaporation device is to add the hydrogen production mixed solution into the water evaporation device for heating, so as to evaporate the water in the hydrogen production mixed solution. Although this is simple and convenient, the water vapor generated by heating the hydrogen production mixed solution in the water evaporation device has a relatively high temperature. Directly discharging the relatively high-temperature water vapor into the air will cause energy waste. Since the water temperature of the hydrogen production mixed solution directly added to the water evaporation device is usually at room temperature, it takes a long time to heat from room temperature to the temperature at which water can be evaporated, which will make the evaporation efficiency of the water evaporation device for the hydrogen production mixed solution poor.

[0005] Therefore, we propose a water evaporation device for methanol low-temperature aqueous phase reforming hydrogen production 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 water evaporation device for methanol low-temperature aqueous phase reforming to produce hydrogen, which solves the problems raised in the above-mentioned background art.

[0008] (II) Technical Solution

[0009] In order to achieve the above object, the present utility model specifically adopts the following technical solutions:

[0010] A water evaporation device for methanol low-temperature aqueous phase reforming to produce hydrogen, including a water evaporation cylinder box, a preheating mixing box is arranged on the water evaporation cylinder box, the water evaporation cylinder box is used to evaporate the hydrogen-producing mixed liquid, and the preheating mixing box is used to preheat the hydrogen-producing mixed liquid to be evaporated;

[0011] A connection box is installed on the water evaporation cylinder box for wrapping the preheating mixing box. There is a heating cavity between the preheating mixing box inside the connection box and the inner wall surface of the connection box. The connection box is communicated with the water evaporation cylinder box. A plurality of support blocks are fixedly arranged in the connection box, and there is a distance between two adjacent support blocks. The preheating mixing box is fixedly arranged on the plurality of support blocks;

[0012] A one-way air valve is fixedly arranged on the preheating mixing box for transporting the water vapor generated by evaporation in the water evaporation cylinder box into the preheating mixing box. A plurality of one-way air valves are provided. A rotating shaft is rotatably arranged in the preheating mixing box, and multiple groups of rotating blades are fixedly arranged on the rotating shaft. Each group of rotating blades has a plurality of blades, and the positions of the plurality of one-way air valves correspond to those of the multiple groups of rotating blades respectively.

[0013] Furthermore, a feed inlet is fixedly arranged on the preheating mixing box, a pressure relief valve is fixedly arranged on the connection box, and the heating cavity between the preheating mixing box and the inner wall surface of the connection box is communicated with the pressure relief valve.

[0014] Furthermore, a liquid inlet pipe is arranged on the connection box. One end of the liquid inlet pipe passes through the connection box and is connected to the preheating mixing box, and the other end of the liquid inlet pipe is connected to the water evaporation cylinder box. A control valve is fixedly arranged on the liquid inlet pipe.

[0015] Furthermore, a support leg is fixedly arranged on the lower end surface of the water evaporation cylinder box. A plurality of support legs are provided, and the plurality of support legs are arranged in a circumferential array. The cross section of the support leg is arc-shaped.

[0016] Furthermore, a discharge pipe is fixedly arranged on the lower end surface of the water evaporation cylinder box, and a regulating valve is arranged on the discharge pipe.

[0017] Furthermore, an operation display is fixedly arranged on the water evaporation cylinder box, and operation keys are fixedly arranged on the operation display.

[0018] (3) Beneficial effects

[0019] Compared with the prior art, the present utility model provides a water evaporation device for methanol low-temperature aqueous phase reforming to produce hydrogen, which has the following beneficial effects:

[0020] In the present utility model, through the mutual cooperation of the preheating mixing box, the connection box, the heating chamber, the support block, the one-way air valve, and the rotating blade, the water vapor generated by heating and evaporating in the water evaporation cylinder box can be collected, and the heat generated by the water vapor is used to preheat the mixed liquid to be evaporated in the preheating mixing box. This not only shortens the evaporation time of the hydrogen production mixed liquid, thereby improving the evaporation efficiency of the hydrogen mixed liquid, but also can reuse the heat energy generated when the hydrogen production mixed liquid is evaporated to dryness, thus playing an energy-saving role. In addition, the hydrogen production mixed liquid in the preheating mixing box will roll up by itself during the preheating process, so as to make the preheating in the preheating mixing box uniform. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 is the first perspective view of the overall structure of the present utility model;

[0022] Figure 2 is the second perspective view of the overall structure of the present utility model;

[0023] Figure 3 is the cross-sectional view of the preheating mixing box and the connection box of the present utility model;

[0024] Figure 4 is the exploded view of the preheating mixing box and the connection box of the present utility model;

[0025] Figure 5 is the three-dimensional view of the connection box of the present utility model.

[0026] In the figure: 1, water evaporation cylinder box; 2, preheating mixing box; 3, connection box; 30, heating chamber; 4, support block; 5, one-way air valve; 6, rotating shaft; 7, rotating blade; 8, feed inlet; 9, pressure relief valve; 10, liquid inlet pipe; 100, control valve; 11, support leg; 12, discharge pipe; 13, control display; 14, control button. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the 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 the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0028] Embodiment

[0029] As Figures 1-5As shown in the figure, a water evaporation device for methanol low-temperature aqueous phase reforming to produce hydrogen proposed in an embodiment of the present utility model includes a water evaporation cylinder box 1 (subject to the prior art, the present utility model does not describe it in detail). A preheating mixing box 2 is provided on the water evaporation cylinder box 1. The water evaporation cylinder box 1 is used to evaporate the hydrogen-producing mixed liquid, and the preheating mixing box 2 is used to preheat the hydrogen-producing mixed liquid to be evaporated.

[0030] A connection box 3 is installed on the water evaporation cylinder box 1 and is used to wrap the preheating mixing box 2. There is a heating cavity 30 between the preheating mixing box 2 inside the connection box 3 and the inner wall surface of the connection box 3. The connection box 3 communicates with the water evaporation cylinder box 1. A plurality of support blocks 4 are fixedly arranged in the connection box 3, and there is a distance between adjacent two support blocks 4. The preheating mixing box 2 is fixedly arranged on the plurality of support blocks 4.

[0031] A one-way air valve 5 is fixedly arranged on the preheating mixing box 2 and is used to transport the water vapor generated by evaporation in the water evaporation cylinder box 1 into the preheating mixing box 2. A plurality of one-way air valves 5 are provided. A rotating shaft 6 is rotatably arranged in the preheating mixing box 2. A plurality of groups of rotating blades 7 are fixedly arranged on the rotating shaft 6. Each group of rotating blades 7 has a plurality of blades, and the positions of the plurality of one-way air valves 5 correspond to the positions of the plurality of groups of rotating blades 7 respectively.

[0032] Through the mutual cooperation of the preheating mixing box 2, the connection box 3, the heating cavity 30, the support blocks 4, the one-way air valve 5, and the rotating blades 7, the water vapor generated by heating and evaporation in the water evaporation cylinder box 1 can be collected, and the heat generated by the water vapor is used to preheat the mixed liquid to be evaporated in the preheating mixing box 2. This not only can shorten the evaporation time of the hydrogen-producing mixed liquid, thereby improving the evaporation efficiency of the hydrogen mixed liquid, but also can recycle the heat energy generated when the hydrogen-producing mixed liquid is evaporated, thus playing an energy-saving role. In addition, the hydrogen-producing mixed liquid in the preheating mixing box 2 will roll by itself during the preheating process, so as to make the preheating in the preheating mixing box 2 uniform.

[0033] As Figures 1-3 shown, a feed inlet 8 is fixedly arranged on the preheating mixing box 2, and a pressure relief valve 9 is fixedly arranged on the connection box 3. The heating cavity 30 between the inner wall surface of the preheating mixing box 2 and the connection box 3 communicates with the pressure relief valve 9. A liquid inlet pipe 10 is arranged on the connection box 3. One end of the liquid inlet pipe 10 passes through the connection box 3 and is connected to the preheating mixing box 2, and the other end of the liquid inlet pipe 10 is connected to the water evaporation cylinder box 1. A control valve 100 is fixedly arranged on the liquid inlet pipe 10.

[0034] By setting the pressure relief valve 9, the pressure inside the heating chamber 30 can be relieved. By setting the liquid inlet pipe 10, the hydrogen production mixture in the preheating mixing tank 2 can be transported to the water evaporation cylinder tank 1. By setting the control valve 100, the speed of transporting the hydrogen production mixture to the water evaporation cylinder tank 1 can be controlled.

[0035] As Figure 1 and 3 shown, a support leg 11 is fixedly arranged on the lower end surface of the water evaporation cylinder tank 1. There are multiple support legs 11, and the multiple support legs 11 are arranged in a circumferential array. The cross-section of the support leg 11 is arc-shaped. An outlet pipe 12 is fixedly arranged on the lower end surface of the water evaporation cylinder tank 1, and a regulating valve is arranged on the outlet pipe 12. A control display 13 is fixedly arranged on the water evaporation cylinder tank 1, and control keys 14 are fixedly arranged on the control display 13.

[0036] As Figure 2 shown, the support leg 11 with an arc-shaped cross-section has the function of improving the stability of the water evaporation cylinder tank 1. The outlet pipe 12 and the regulating valve are provided for discharging the materials in the water evaporation cylinder tank 1. The control display 13 and the control keys 14 are provided for controlling the operation of the device.

[0037] The working principle of this utility model: First, add the hydrogen production mixture into the water evaporation cylinder tank 1. When a certain amount of the hydrogen production mixture is added into the water evaporation cylinder tank 1, then add a certain amount of the hydrogen production mixture into the preheating mixing tank 2. At this time, heat the hydrogen production mixture in the water evaporation cylinder tank 1. When the hydrogen production mixture in the water evaporation cylinder tank 1 is heated, water vapor will be generated. The water vapor will enter the heating chamber 30 between the connection box 3 and the preheating mixing tank 2. The water vapor in the heating chamber 30 will transfer heat to the hydrogen production mixture in the preheating mixing tank 2 through the outer wall surface of the preheating mixing tank 2. The temperature of the hydrogen production mixture will gradually rise. As the water vapor in the heating chamber 30 increases, the pressure in the heating chamber 30 also increases. When the pressure in the heating chamber 30 rises to a certain height, the water vapor in the heating chamber 30 will enter the preheating mixing tank 2 through the one-way air valve 5. The water vapor entering the preheating mixing tank 2 will generate water pressure, and the generated water pressure will push the rotating blade 7 to rotate. The rotation of the rotating blade 7 will stir the hydrogen production mixture in the preheating mixing tank 2, so as to make the hydrogen production mixture in the preheating mixing tank 2 evenly heated.

[0038] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used 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 on 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 water evaporation device for producing hydrogen by low-temperature aqueous phase reforming of methanol, comprising a water evaporation cylinder (1), characterized in that: The moisture evaporation cylinder box (1) is provided with a preheating mixing box (2), the moisture evaporation cylinder box (1) is used to evaporate the hydrogen production mixed liquid, and the preheating mixing box (2) is used to preheat the hydrogen production mixed liquid to be evaporated; A connecting box (3) is installed on the water evaporation cylinder box (1) and is used to wrap the preheating mixing box (2). A heating chamber (30) is provided between the preheating mixing box (2) inside the connecting box (3) and the inner wall surface of the connecting box (3). The connecting box (3) is communicated with the water evaporation cylinder box (1). A plurality of support blocks (4) are fixedly arranged inside the connecting box (3). There is a spacing between two adjacent support blocks (4). The preheating mixing box (2) is fixedly arranged on the plurality of support blocks (4). A one-way air valve (5) is fixedly arranged on the preheating mixing box (2) and is used for conveying water vapor generated by evaporation in the water evaporation cylinder box (1) to the preheating mixing box (2). A plurality of one-way air valves (5) are arranged. A rotating shaft (6) is rotatably arranged in the preheating mixing box (2). A plurality of groups of rotating blades (7) are fixedly arranged on the rotating shaft (6). Each group of the rotating blades (7) has a plurality of groups. The plurality of one-way air valves (5) respectively correspond to the positions of the plurality of groups of rotating blades (7).

2. The water evaporation device for producing hydrogen by low-temperature aqueous phase reforming of methanol according to claim 1, characterized in that: The preheating mixing box (2) is fixedly provided with a feed port (8), the connecting box (3) is fixedly provided with a pressure relief valve (9), and the heating chamber (30) between the inner wall surfaces of the preheating mixing box (2) and the connecting box (3) is in communication with the pressure relief valve (9).

3. The water evaporation device for producing hydrogen by low-temperature aqueous phase reforming of methanol according to claim 1, characterized in that: The connection box (3) is provided with a liquid inlet pipe (10), one end of the liquid inlet pipe (10) passes through the connection box (3) and is connected to the preheating mixing box (2), the other end of the liquid inlet pipe (10) is connected to the water evaporation cylinder box (1), and a control valve (100) is fixedly provided on the liquid inlet pipe (10).

4. The water evaporation device for producing hydrogen by low-temperature aqueous phase reforming of methanol according to claim 1, characterized in that: A support leg (11) is fixedly provided on the lower end surface of the moisture evaporation cylinder box (1), and a plurality of the support legs (11) are provided. The plurality of the support legs (11) are arranged in a circular array, and the cross section of the support leg (11) is in the shape of an arc.

5. The water evaporation device for producing hydrogen by low-temperature aqueous phase reforming of methanol according to claim 1, characterized in that: A discharge pipe (12) is fixedly arranged on the lower end surface of the water evaporation cylinder box (1), and a regulating valve is arranged on the discharge pipe (12).

6. The water evaporation device for producing hydrogen by low-temperature aqueous phase reforming of methanol according to claim 1, characterized in that: The water evaporation cylinder box (1) is fixedly provided with a control display (13), and the control display (13) is fixedly provided with a control key (14).

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