Feeding type ammonia borane hydrolysis hydrogen production device

Abstract

The invention discloses a feeding type ammonia borane hydrolysis hydrogen production device. The bottom of the first container cavity is filled with the catalyst unit, the catalyst unit comprises a carrier and a supported catalyst, the carrier is phosphatized foamed nickel, and the high specific surface area and porosity of the carrier promote the hydrolysis reaction to be faster and more sufficient. During use, environmental water is added into the bottom of the first container cavity through the water inlet to immerse the catalyst unit, and the upper space part of the first container cavity is used for storing hydrogen generated by hydrolysis reaction. The second container cavity is an ammonia borane solid powder storage container, ammonia borane solid powder is brought into the first container cavity in a screw feeding mode, and ammonia borane reacts with water to release hydrogen under the action of the catalyst unit while forming a solution. The mode of the ammonia borane solid material bag is adopted, continuous supply of ammonia borane and simple and convenient carrying are achieved by feeding the second container cavity, the problem of a hydrolysis reaction water source is solved by adopting the mode of filtering environmental water, and flexible use and efficient integration of the hydrolysis hydrogen production device are achieved.

Description

Technical Field

[0001] The invention relates to the technical field of hydrogen preparation, and in particular to a feed-type ammonia borane hydrolysis hydrogen production device. Background Art

[0002] Hydrogen energy is gaining increasing attention from all walks of life due to its clean and efficient characteristics. As the emphasis on environmental protection and energy efficiency increases, hydrogen, as an ideal energy option, has become the core of many technologies and applications. At present, how to provide a portable, stable and efficient hydrogen source for various equipment has become an important research topic for researchers and engineers.

[0003] Currently, hydrogen supply equipment faces several significant problems. First, the structural design of many devices is complex, which not only increases the difficulty of operation and maintenance, but also may lead to a high rate of system failure. Secondly, these devices are less versatile and difficult to adapt to different environmental conditions and diverse application requirements, limiting their ability to be widely used. Finally, most hydrogen supply systems are large and heavy, which makes the equipment less portable and difficult to operate effectively in situations that require flexible deployment. These problems have a combined impact on the practicality and market acceptance of hydrogen equipment.

[0004] The feed-type ammonia borane hydrolysis hydrogen production device generates hydrogen by reacting ammonia borane, catalyst and water in a one-time manner. This design simplifies the operation process and allows more flexible reaction adjustment, so that it can adapt to different application requirements and environmental conditions. In addition, due to its simple design, the feed-type device is usually small in size and light in weight, so it is very suitable for use in occasions where space is limited or temporary settings are required, such as outdoor experiments or emergency hydrogen supply. Its portability allows users to easily carry and deploy the device to adapt to different operating environments. Summary of the invention

[0005] The present invention aims to provide a feed-type ammonia borane hydrolysis hydrogen production device, which can use environmental water as a water source to achieve flexibility and high efficiency of the hydrolysis hydrogen production device.

[0006] In order to achieve the above requirements, the present invention adopts the following technical scheme: a feed-type ammonia borane hydrolysis hydrogen production device, comprising a feed unit, a hydrogen reaction unit, a water purification unit, a control unit, a hydrogen outlet and a safety valve; a hydrogen reaction unit is connected below the feed unit, a hydrogen reaction unit is connected below the water purification unit, the hydrogen reaction unit and the feed unit are connected to the control unit, and a hydrogen outlet and a safety valve are connected above the hydrogen reaction unit.

[0007] The feeding unit includes a stepper motor and a stepper motor controller. The stepper motor has a feeding screw below and is connected to the stepper motor controller above. The stepper motor controller can be connected to a power supply and is also connected to a pressure sensor for monitoring the internal pressure of the hydrogen reaction unit.

[0008] The hydrogen reaction unit comprises a first container cavity and a second container cavity, and the first container cavity and the second container cavity are connected to each other.

[0009] A catalyst unit is provided in the first container cavity and filled at the bottom of the first container cavity. The catalyst unit includes a carrier and a catalyst loaded thereon. The carrier is phosphated nickel foam. Ammonia borane solid powder enters the first container cavity through a feed port and contacts with the catalyst during the process of being dissolved in water to form an ammonia borane solution. Hydrolysis reaction generates hydrogen, which enters the upper part of the first container cavity and is then discharged.

[0010] The first container cavity also includes a hydrogen retention space located at the upper part of the first container cavity, and the hydrogen retention space is connected to a hydrogen outlet valve and a safety valve.

[0011] The second container cavity is connected to a stepper motor and is used for storing ammonia borane and feeding.

[0012] The water purification unit is connected to the first container cavity, and includes a water inlet and a purification channel which are connected in sequence. The purification channel is connected to the first container cavity. Ambient water enters through the water inlet, flows through the purification channel, and enters the first container cavity as a water source for dissolving ammonia borane.

[0013] The control unit includes a pressure sensor connected to the first container cavity and a stepper motor connected to the second container cavity. The pressure sensor is used to detect the pressure of hydrogen in the first container cavity. When the pressure is lower than or higher than a set value, the pressure is fed back to the stepper motor. By adjusting the rotation speed of the screw, the rate at which the ammonia borane solid powder enters the first container cavity is controlled, and the rate at which the ammonia borane hydrolyzes to produce hydrogen is controlled.

[0014] The hydrogen outlet valve is connected to the first container cavity and automatically opens when the set pressure is reached; the hydrogen safety valve is connected to the first container cavity and automatically opens when the set pressure is reached to ensure the safety of the device.

[0015] The environmental water includes tap water, surface water and sea water.

[0016] Compared with the prior art, the present invention has the following beneficial effects: the present invention adopts ammonia borane solid material bag, feeds by stepping motor, and detects the hydrogen pressure in the second container cavity, so as to achieve the continuity of hydrogen production by hydrolysis and make the whole process controllable, and has the characteristics of simplicity and portability. The present invention achieves the purification of various environmental water by filtering water, which greatly enhances the wide applicability of the device. The present invention makes the device have good safety and reliability by monitoring the pressure of the hydrogen reaction unit and setting the safety valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the feed-type ammonia borane hydrolysis hydrogen production device of the present invention.

[0018] Figure 2 for Figure 1 Top view of the .

[0019] Figure 3 It is a schematic diagram of the internal structure of the feed-type ammonia borane hydrolysis hydrogen production device of the present invention.

[0020] Figure 4 This is a schematic diagram from another angle of the internal structure of the feed-type ammonia borane hydrolysis hydrogen production device of the present invention. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation methods described herein are only used to explain the present invention and are not used to limit the present invention.

[0022] In the description of the present invention, it should be noted that the orientations or positional relationships indicated by terms such as “upper”, “middle”, “lower”, “inside”, “outside”, and “both sides” are based on the orientations or positional relationships shown in the accompanying drawings, and are only simplified descriptions for the convenience of describing the present invention, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] like Figure 1-4As shown, the feed-type ammonia borane hydrolysis hydrogen production device of the present invention includes a feed unit, a hydrogen reaction unit, a water purification unit, a control unit, a hydrogen outlet and a safety valve; the feed unit is connected to a hydrogen reaction unit below, the water purification unit is connected to a hydrogen reaction unit below, the hydrogen reaction unit and the feed unit are connected to the control unit, and the hydrogen reaction unit is connected to a hydrogen outlet and a safety valve above.

[0025] The feeding unit includes a stepper motor 3 and a stepper motor controller 13. The stepper motor 3 has a feeding screw 4 below and is connected to the stepper motor controller 13 above. The stepper motor controller 13 is connected to a power source and is also connected to a pressure sensor 10 for monitoring the internal pressure of the hydrogen reaction unit.

[0026] The hydrogen reaction unit comprises a first container cavity 5 and a second container cavity 6, and the first container cavity 5 and the second container cavity 6 are connected to each other.

[0027] A catalyst unit is provided in the first container cavity 5, and the catalyst unit is filled at the bottom of the first container cavity 5. The catalyst unit includes a carrier and a catalyst loaded thereon, and the carrier is phosphated nickel foam. Ammonia borane solid powder enters the first container cavity through the feed port 9, and contacts with the catalyst during the process of being dissolved in water to form an ammonia borane solution. Hydrolysis reaction generates hydrogen, and the hydrogen enters the upper part of the first container cavity 5 and is then discharged.

[0028] The first container cavity 5 also includes a hydrogen retention space located at the upper part of the first container cavity, and the hydrogen retention space is connected to a hydrogen outlet valve 8 and a safety valve 12.

[0029] The second container chamber 6 is connected to the stepping motor 3 and is used for storing ammonia borane and feeding.

[0030] The water purification unit is connected to the first container cavity 5, and includes a water inlet 1 and a purification channel which are connected in sequence. The purification channel is connected to the first container cavity 5. Ambient water enters through the water inlet 1, flows through the purification channel, and enters the first container cavity as a water source for dissolving ammonia borane.

[0031] The control unit includes a pressure sensor 10 connected to the first container cavity and a stepper motor 3 connected to the second container cavity 6. The pressure sensor is used to detect the pressure of hydrogen in the first container cavity. When the pressure is lower than or higher than a set value, the pressure is fed back to the stepper motor. By adjusting the rotation speed of the screw, the rate at which the ammonia borane solid powder enters the first container cavity is controlled, and the rate at which the ammonia borane hydrolyzes to produce hydrogen is controlled.

[0032] The hydrogen outlet valve 8 is connected to the first container cavity 5 and automatically opens when the set pressure is reached; the hydrogen safety valve is connected to the first container cavity and automatically opens when the set pressure is reached to ensure the safety of the device.

[0033] The environmental water includes tap water, surface water and sea water.

[0034] Specifically, the feeding unit includes a stepper motor, a driver and a stepper motor controller. Before the reaction starts, ammonia borane is added to the second container cavity, and the stepper motor is started. Ammonia borane can be added to the first container cavity by screw feeding to hydrolyze and generate hydrogen.

[0035] Specifically, the hydrogen reaction unit includes a first container cavity and a second container cavity, wherein the second container cavity is an ammonia borane material package storage cavity, the bottom of the first container cavity is a catalyst layer composed of nickel foam, and the upper part thereof is a hydrogen retention space, which can reflect the pressure of the hydrogen through a pressure sensor. If the set pressure is exceeded, the stepper motor can be stopped to feed the material, thereby achieving control of the reaction process.

[0036] Specifically, the water purification unit includes a water inlet 1 (covered with a filter element), which is connected to the first container cavity. Before the reaction starts, ambient water is added to the water inlet and passes through the filter element of the water inlet 1 to purify the water and submerge the catalyst layer, providing reaction conditions for the hydrolysis of ammonia borane.

[0037] Specifically, by setting up a pressure sensor and a safety valve, the hydrogen pressure can be detected and the system safety can be guaranteed, thereby improving the safety and reliability of the device.

[0038] Example

[0039] Step 1: At room temperature, add a proper amount of river water to the water inlet, and the river water enters the first container cavity through the filter element of the water inlet 1 and submerges the catalyst layer. Add a proper amount of ammonia borane at the ammonia borane feeding port 2.

[0040] Step 2: Connect the stepper motor controller 13 to the power supply, and connect the pressure sensor 10 to the stepper motor controller 13 .

[0041] Step 3: Turn on the stepper motor 3, adjust it to the third gear through the stepper motor controller 13, and the system starts to feed automatically, and ammonia borane is sent from the second container chamber 6 to the first container chamber 5 through the feed screw 4 through the second container chamber feed port 9, and contacts with water and the catalyst layer and undergoes a hydrolysis reaction to generate hydrogen. When the hydrogen in the hydrogen outlet pipeline 7 reaches the outlet pressure of the hydrogen outlet valve 8, it will be exported through the outlet valve. During the process, the pressure is detected in real time by the pressure sensor 10. When the pressure is higher than the set pressure, the stepper motor controller 13 will reduce the gear position and reduce the speed of the feed screw 4, thereby reducing the feed speed of ammonia borane and reducing the rate of hydrogen generation, so that the entire device can continuously and stably output hydrogen. When the pressure of the first reaction chamber 5 is higher than the safety pressure, the safety valve 12 will automatically open, and the hydrogen will be discharged through the safety valve pipeline 11 to ensure the safety and reliability of the entire device.

[0042] The above descriptions are merely embodiments of the present invention and are merely descriptions of the present invention within a certain scope. They cannot be used to limit the implementation methods of the present invention. Without departing from the actual connotation of the design of the present invention, any modifications, replacements and improvements made to the device of the present invention by those skilled in the art should be deemed to be within the scope of protection of the claims of the present invention.

Claims

1. A feed-type ammonia borane hydrolysis hydrogen production device, characterized in that: It includes a feeding unit, a hydrogen reaction unit, a water purification unit, a control unit, a hydrogen outlet and a safety valve; the feeding unit is connected to a hydrogen reaction unit below, the water purification unit is connected to a hydrogen reaction unit below, the hydrogen reaction unit and the feeding unit are connected to the control unit, and the hydrogen outlet and a safety valve are connected to the top of the hydrogen reaction unit.

2. The feed-type ammonia borane hydrolysis hydrogen production device according to claim 1, characterized in that: The feeding unit comprises a stepper motor (3) and a stepper motor controller (13). The stepper motor (3) has a feeding screw (4) below and is connected to the stepper motor controller (13) above. The stepper motor controller (13) is connected to a power source and is also connected to a pressure sensor (10) for monitoring the internal pressure of the hydrogen reaction unit.

3. The feed-type ammonia borane hydrolysis hydrogen production device according to claim 2, characterized in that: The hydrogen reaction unit comprises a first container cavity (5) and a second container cavity (6), and the first container cavity (5) and the second container cavity (6) are connected to each other.

4. The feed-type ammonia borane hydrolysis hydrogen production device according to claim 3, characterized in that: A catalyst unit is arranged in the first container cavity (5), and the catalyst unit is filled at the bottom of the first container cavity (5). The catalyst unit comprises a carrier and a catalyst loaded thereon, and the carrier is phosphated nickel foam. Ammonia borane solid powder enters the first container cavity through a feed port (9), and contacts with the catalyst during the process of being dissolved in water to form an ammonia borane solution. Hydrolysis reaction generates hydrogen, and the hydrogen enters the upper part of the first container cavity (5) and is then discharged.

5. The feed-type ammonia borane hydrolysis hydrogen production device according to claim 3, characterized in that: The first container cavity (5) further comprises a hydrogen retention space located at the upper part of the first container cavity, and the hydrogen retention space is connected to a hydrogen outlet valve (8) and a safety valve (12).

6. The feed-type ammonia borane hydrolysis hydrogen production device according to claim 3, characterized in that: The second container cavity (6) is connected to the stepper motor (3) and is used for storing ammonia borane and implementing feeding.

7. The feed-type ammonia borane hydrolysis hydrogen production device according to claim 3, characterized in that: The water purification unit is connected to the first container cavity (5), and comprises a water inlet (1) and a purification channel which are connected in sequence. The purification channel is connected to the first container cavity (5). Environmental water enters through the water inlet (1), flows through the purification channel, and enters the first container cavity, serving as a water source for dissolving ammonia borane.

8. The feed-type ammonia borane hydrolysis hydrogen production device according to claim 7, characterized in that: The control unit comprises a pressure sensor (10) connected to the first container cavity and a stepper motor (3) connected to the second container cavity (6). The pressure sensor is used to detect the pressure of hydrogen in the first container cavity. When the pressure is lower than or higher than a set value, the pressure is fed back to the stepper motor. By adjusting the rotation speed of the screw, the rate at which ammonia borane solid powder enters the first container cavity is controlled, and the rate at which ammonia borane is hydrolyzed to produce hydrogen is controlled.

9. The feed-type ammonia borane hydrolysis hydrogen production device according to claim 8, characterized in that: The hydrogen outlet valve (8) is connected to the first container cavity (5) and automatically opens when a set pressure is reached; the hydrogen safety valve is connected to the first container cavity and automatically opens when a set pressure is reached, thereby ensuring the safety of the device.

10. The feed-type ammonia borane hydrolysis hydrogen production device according to claim 7, characterized in that: The environmental water includes tap water, surface water and sea water.

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