High-efficiency hydrogen production equipment with waste heat recovery function

Abstract

The utility model discloses a kind of efficient hydrogen production equipment with waste heat recovery function, it is related to hydrogen production equipment technical field, including electrolytic tank, electrolytic tank top is engaged with and is connected with tank cover, tank cover top is rotatably connected with first gear, tank cover upper end is fixedly connected with first motor, first gear is fixedly connected with first motor output end, electrolytic tank inside is rotatably connected with rotating rod, rotating rod is provided with two groups, every group rotating rod outer periphery is fixedly connected with stirring vane component, stirring vane component is provided with four groups;Electrolytic tank outside is provided with water passing box, water passing box bottom is provided with first connecting pipe and second connecting pipe, electrolytic tank inside is provided with connection water passing pipe component, stirring can let electrolyte whole mixing, maintain full tank concentration uniform, guarantee ion continuous efficient migration;Electrolysis process is accompanied by a small amount of heat, heat in liquid electrolyte is easy to accumulate locally, possibly lead to electrolyte temperature uneven, and stirring can be dispersed by heat through liquid convection, maintain electrolysis temperature stable.

Description

Technical Field

[0001] This utility model relates to the field of hydrogen production equipment technology, specifically a high-efficiency hydrogen production equipment with waste heat recovery function. Background Technology

[0002] Hydrogen is an ideal green energy source, and its application mainly involves hydrogen production, storage, and transportation. Exploring more novel and environmentally friendly hydrogen production technologies is crucial for developing a hydrogen economy. Water electrolysis is a relatively convenient method for producing hydrogen. Direct current is passed through an electrolyzer filled with electrolyte, causing water molecules to undergo an electrochemical reaction at the electrodes, decomposing into hydrogen and oxygen. In current technologies, pure water is used as a raw material when producing hydrogen through water electrolysis. However, since pure water is a weak electrolyte, a certain amount of electrolyte needs to be added to improve its conductivity, thereby increasing the efficiency of hydrogen production through water electrolysis.

[0003] Based on this, a search on the patent website revealed a water electrolysis hydrogen production device with multiple hydrogen storage modules, according to Chinese patent application number CN202422230472.8, which includes a reactor and multiple hydrogen storage modules; the reactor contains multiple stacked hydrogen storage modules. It is known that the above-mentioned patented device has the following shortcomings when in use: the traditional water electrolysis hydrogen production device has a simple function and does not have the function of waste heat recovery. Traditional equipment often directly discharges this waste heat, which not only causes energy waste, but also causes thermal pollution problems, reducing the practicality of the device.

[0004] To address the aforementioned issues, a high-efficiency hydrogen production device with waste heat recovery function is proposed. Utility Model Content

[0005] The purpose of this invention is to provide a high-efficiency hydrogen production device with waste heat recovery function. By using this device, the problems of traditional water electrolysis hydrogen production devices having simple functions and lacking waste heat recovery function are solved. Traditional devices often directly discharge this waste heat, which not only wastes energy but also causes thermal pollution and reduces the practicality of the device.

[0006] To achieve the above objectives, the technical solution provided by this utility model is as follows: a high-efficiency hydrogen production device with waste heat recovery function, comprising an electrolysis tank, a tank cover being snapped onto the top of the electrolysis tank, a first gear being rotatably connected to the top of the tank cover, a first motor being fixedly connected to the upper end of the tank cover, the first gear being fixedly connected to the output end of the first motor, a rotating rod being rotatably connected inside the electrolysis tank, two sets of the rotating rod being provided, and a stirring blade component being fixedly connected to the outer periphery of each set of the rotating rod, four sets of the stirring blade component being provided; a water passage box being provided on the outside of the electrolysis tank, a first connecting pipe and a second connecting pipe being provided at the bottom of the water passage box, and a water passage pipe component being provided inside the electrolysis tank, the water passage pipe component being evenly distributed inside the electrolysis tank, one end of the water passage pipe component being connected to the second connecting pipe, and the other end of the water passage pipe component being connected to the first connecting pipe.

[0007] Preferably, an installation box is provided on the outside of the electrolysis tank, and a water inlet pipe is provided on one side of the installation box. One end of the water inlet pipe extends to one side of the first connecting pipe, and the water inlet pipe is connected to the first connecting pipe.

[0008] The above-mentioned structural design allows external condensate to smoothly enter the first connecting pipe through the inlet pipe, providing a low-temperature carrier for the heat exchange process of waste heat recovery and establishing the initial channel for waste heat absorption.

[0009] Preferably, a drain pipe is provided on one side of the mounting box, and a water pump is fixedly connected to the outside of the mounting box, with the drain pipe and the output end of the water pump being interconnected.

[0010] The above-described structure allows the water, heated by absorbing waste heat, to be quickly discharged from the equipment through a drain pipe using the power of a water pump. This effectively removes the hot water after heat exchange, providing conditions for subsequent hot water reuse.

[0011] Preferably, the water pump input end is provided with a through pipe, one end of which extends to one side of the second connecting pipe, and the second connecting pipe and the through pipe are interconnected.

[0012] The above-mentioned design allows the water pump to be linked with the second connecting pipe through the through-pipe, driving the condensate to circulate between the second connecting pipe and the connecting water pipe components, thus constructing a complete condensate circulation path and ensuring continuous waste heat recovery.

[0013] Preferably, the inlet pipe is used to introduce external condensate, and the drain pipe is used to drain water.

[0014] The above-mentioned structural design clarifies the input channels for condensate and the output channels for water after heat exchange, ensuring a stable supply of low-temperature medium and discharge of high-temperature medium in the waste heat recovery system, maintaining efficient heat exchange, and preventing the accumulation of waste heat in the electrolysis tank.

[0015] Preferably, the first gear is meshed with second gears on both its left and right sides, the two sets of second gears are rotatably connected to the top surface of the can lid, and the two sets of rotating rods are respectively fixedly connected to the two sets of second gears.

[0016] With the above-mentioned structure, the first gear can drive two sets of second gears to rotate synchronously in opposite directions, thereby driving the two sets of rotating rods and stirring blades to rotate, achieving uniform stirring of the electrolyte in the electrolytic tank and preventing local uneven concentration and temperature from affecting the electrolysis efficiency.

[0017] Preferably, an ion-exchange membrane is fixedly connected to the middle of the inner cavity of the electrolytic vessel. The ion-exchange membrane is used to divide the electrolytic vessel into a cathode chamber and an anode chamber. A cathode conductive plate is fixedly connected inside the cathode chamber, and an anode conductive plate is fixedly connected inside the anode chamber. Both the anode conductive plate and the cathode conductive plate are electrically connected to an external power source, thereby energizing the pure water in the electrolytic vessel to electrolyze and produce hydrogen and oxygen.

[0018] The above-mentioned structure design can separate the hydrogen and oxygen generation areas through the ion-exchange membrane to avoid gas mixing. At the same time, the electrolysis reaction is triggered by the conductive plate, which ensures the stable generation of hydrogen and oxygen and improves the safety and efficiency of hydrogen production.

[0019] Preferably, the top of the electrolytic tank is provided with an exhaust assembly, and the exhaust assembly is provided with two sets. The exhaust assembly includes an air pump fixedly connected to the top of the tank cover. The input end of one set of air pumps extends to the cathode chamber, and the input end of the other set of air pumps extends to the anode chamber. The output ends of both sets of air pumps are provided with exhaust pipes.

[0020] The above-described structure allows for the separate directional extraction of hydrogen from the cathode chamber and oxygen from the anode chamber. Hydrogen and oxygen are then separated and collected via an exhaust pipe, ensuring gas purity and preventing safety risks caused by mixing.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model discloses a high-efficiency hydrogen production device with waste heat recovery function. The device has cathode connectors and anode connectors installed on both sides. The cathode connectors and cathode plates are connected by wires, and the anode connectors are connected to the anode plates by wires. External wires are connected to the anode connectors and cathode connectors respectively, so that the cathode plates and anode plates are energized, causing the water in the electrolysis tank to electrolyze and produce hydrogen and oxygen. Hydrogen is generated at the cathode and oxygen is generated at the anode, and the oxygen is discharged through the device exhaust pipe assembly. An ion separator is placed between the cathode and anode. Its core function is to isolate the two electrodes and selectively transfer ions, which ensures both electrolysis safety and efficient reaction. The device is equipped with a stirring component. Stirring can mix the electrolyte as a whole, maintain uniform concentration throughout the tank, and ensure continuous and efficient ion migration. The electrolysis process is accompanied by a small amount of heat generation. Heat in the liquid electrolyte is prone to local accumulation, which may lead to uneven electrolyte temperature. Stirring can disperse the heat through liquid convection and maintain a stable electrolysis temperature. Heat is inevitably generated during the process of producing hydrogen by water electrolysis. This application is equipped with a waste heat recovery function, which essentially uses condensed water as a heat carrier to absorb the waste heat generated by the water electrolysis hydrogen production equipment and transfer it out. The heated hot water is then collected and utilized. Fluid heat exchange waste heat recovery is adopted to improve the practicality of the device. Attached Figure Description

[0022] Figure 1 This is an overall structural diagram of the present invention; Figure 2 This is a bottom sectional view of the internal structure of the electrolysis tank of this utility model; Figure 3 This is a side sectional view of the internal structure of the electrolysis tank of this utility model; Figure 4 This is a structural diagram of the stirring mechanism in the hydrolysis tank of this utility model; Figure 5 This is a structural diagram of the first connecting pipe, the second connecting pipe, and the water pipe connecting components in the device of this utility model; Figure 6 This is a structural diagram of the mounting box, water inlet, and drain pipe of this utility model.

[0023] In the diagram: 1. Electrolytic vessel; 11. Vessel lid; 12. First gear; 121. Second gear; 122. First motor; 123. Rotating rod; 124. Stirring blade assembly; 13. Water box; 2. Exhaust assembly; 131. First connecting pipe; 132. Second connecting pipe; 133. Water connecting pipe assembly; 14. Mounting box; 141. Water inlet pipe; 142. Drain pipe; 143. Water pump; 15. Ion membrane; 16. Cathode conductive plate; 17. Anode conductive plate. Detailed Implementation

[0024] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] To further understand the content of this utility model, a detailed description of this utility model will be provided in conjunction with the accompanying drawings.

[0026] Combination Figures 1-6 A high-efficiency hydrogen production device with waste heat recovery function includes an electrolysis tank 1. A tank cover 11 is snapped onto the top of the electrolysis tank 1. A first gear 12 is rotatably connected to the top of the tank cover 11. A first motor 122 is fixedly connected to the upper end of the tank cover 11. The first gear 12 is fixedly connected to the output end of the first motor 122. Rotating rods 123 are rotatably connected inside the electrolysis tank 1. Two sets of rotating rods 123 are provided. Stirring blade components 124 are fixedly connected to the outer periphery of each set of rotating rods 123. Four sets of stirring blade components 124 are provided. A water passage box 13 is provided on the outside of the electrolysis tank 1. A first connecting pipe 131 and a second connecting pipe 132 are provided at the bottom of the water passage box 13. Connecting water passage pipe components 133 are provided inside the electrolysis tank 1. The connecting water passage pipe components 133 are evenly distributed inside the electrolysis tank 1. One end of the connecting water passage pipe component 133 is connected to the second connecting pipe 132, and the other end of the connecting water passage pipe component 133 is connected to the first connecting pipe 131.

[0027] The present invention will be further described below with reference to the embodiments.

[0028] Example 1 An installation box 14 is provided on the outside of the electrolytic tank 1. A water inlet pipe 141 is provided on one side of the installation box 14. One end of the water inlet pipe 141 extends to one side of the first connecting pipe 131 and the water inlet pipe 141 and the first connecting pipe 131 are interconnected. A drain pipe 142 is provided on one side of the installation box 14. A water pump 143 is fixedly connected to the outside of the installation box 14. The drain pipe 142 and the output end of the water pump 143 are interconnected. A through pipe is provided at the input end of the water pump 143. One end of the through pipe extends to one side of the second connecting pipe 132 and the second connecting pipe 132 are interconnected. The water inlet pipe 141 is used to introduce external condensate, and the drain pipe 142 is used to drain water.

[0029] An ion-exchange membrane 15 is fixedly connected to the middle of the inner cavity of the electrolysis tank 1. The ion-exchange membrane 15 is used to divide the electrolysis tank 1 into a cathode chamber and an anode chamber. A cathode conductive plate 16 is fixedly connected to the inside of the cathode chamber, and an anode conductive plate 17 is fixedly connected to the inside of the anode chamber. Both the anode conductive plate 17 and the cathode conductive plate 16 are electrically connected to an external power source, thereby energizing the pure water in the electrolysis tank 1 to produce hydrogen and oxygen. An exhaust assembly 2 is provided on the top of the electrolysis tank 1. The exhaust assembly 2 is provided in two sets. The exhaust assembly 2 includes an air pump fixedly connected to the top of the tank cover 11. The input end of one air pump extends to the cathode chamber, and the input end of the other air pump extends to the anode chamber. Both sets of air pumps are provided with exhaust pipes at their output ends.

[0030] Example 2 The first gear 12 is meshed with the second gear 121 on both the left and right sides. The two sets of second gears 121 are rotatably connected to the top surface of the can lid 11. The two sets of rotating rods 123 are fixedly connected to the two sets of second gears 121 respectively.

[0031] In summary, the working principle is as follows: The core of the equipment is the electrolytic tank 1, whose inner cavity is precisely divided into a cathode chamber and an anode chamber by an ion-exchange membrane 15. A cathode conductive plate 16 and an anode conductive plate 17 are fixed in the two chambers respectively. Before use, firstly, the tank cover 11 is opened, and pure water and electrolyte are injected into the electrolytic tank 1 to provide the material basis for the electrolysis reaction; secondly, an external power supply is connected to the cathode and anode conductive plates through wires to form a closed circuit. After the circuit is connected, the cathode conductive plate 16 and the anode conductive plate 17 serve as the two electrodes of the electrolysis reaction, triggering the electrolysis of pure water. Water molecules gain electrons on the surface of the cathode conductive plate 16, and the generated hydrogen gas is directionally discharged and collected through the exhaust component 2 at its top; while water molecules lose electrons on the surface of the anode conductive plate 17, and oxygen gas is also discharged through the exhaust component 2 at its top. The ion-exchange membrane 15 of the device selectively allows the migration of hydroxide ions and hydrogen ions, which avoids the mixing of cathode hydrogen gas and anode oxygen gas, preventing safety risks, and maintains the electroneutrality of the electrolyte, ensuring the continuous and efficient electrolysis reaction. When using the device, uneven electrolyte concentration and localized heat accumulation are common problems during electrolysis. A stirring assembly is needed to ensure hydrogen production efficiency. The user can start the first motor 122, whose output drives the first gear 12 to rotate. Since the first gear 12 meshes with two sets of second gears 121, the rotation of the first gear 12 synchronously drives the two sets of second gears 121 to rotate in opposite directions. Each set of second gears 121 is fixedly connected to a rotating rod 123 extending into the electrolysis tank 1. When the rotating rod 123 rotates, it drives the outer stirring blades 124 to rotate. The stirring mechanism mechanically mixes the electrolyte thoroughly, preventing a decrease in electrolysis efficiency due to insufficient electrolyte in certain areas and maintaining a uniform electrolyte concentration throughout the tank. The electrolysis reaction generates a small amount of heat, which can easily accumulate locally in the liquid electrolyte. The stirring mechanism can disperse this heat through liquid convection, preventing sudden rises and falls in electrolyte temperature and ensuring a uniform temperature inside the electrolysis tank 1. Waste heat is continuously generated during water electrolysis. The equipment converts this waste heat into usable energy through a fluid heat exchange waste heat recovery system, avoiding waste and thermal pollution. The user continuously introduces condensate into the inlet pipe 141 and simultaneously starts the water pump 143 on the outside of the mounting box 14. The water pump 143 pressurizes and delivers the condensate to the second connecting pipe 132 through the connecting water pipe component 133. The condensate flows through the evenly distributed connecting water pipe components 133 inside the electrolysis tank 1. During the flow, the condensate exchanges heat with the high-temperature electrolyte and the tank wall, absorbing waste heat and increasing its own temperature. The warm water that has completed heat absorption is discharged from the electrolysis tank 1 through the second connecting pipe 132 and the drain pipe 142. The discharged warm water can be used for process assistance, workshop heating, and other scenarios, achieving the purpose of waste heat resource utilization and reducing the overall energy consumption of the equipment. In summary, the equipment is based on hydrogen production by electrolysis. The electrolysis reaction produces hydrogen and oxygen while releasing waste heat. The stirring component ensures the continuous and efficient electrolysis reaction by uniform concentration and temperature, and avoids excessive local accumulation of waste heat. The waste heat recovery system removes waste heat in a timely manner and converts it into usable energy, solving the problem of waste heat waste in traditional equipment and improving the practicality and environmental friendliness of the equipment.

[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency hydrogen production device with waste heat recovery function, comprising an electrolyzer (1), characterized in that: The top of the electrolytic tank (1) is fitted with a tank cover (11), and the top of the tank cover (11) is rotatably connected to a first gear (12). The upper end of the tank cover (11) is fixedly connected to a first motor (122), and the first gear (12) is fixedly connected to the output end of the first motor (122). Inside the electrolytic tank (1), there is a rotating rod (123) rotatably connected. There are two sets of rotating rods (123), and each set of rotating rods (123) is fixedly connected to a stirring blade component (124) on its outer periphery. The stirring blade component (124) is provided with four The electrolytic tank (1) is provided with a water box (13) on the outside. The bottom of the water box (13) is provided with a first connecting pipe (131) and a second connecting pipe (132). The electrolytic tank (1) is provided with a water connecting pipe component (133) inside. The water connecting pipe component (133) is evenly distributed inside the electrolytic tank (1). One end of the water connecting pipe component (133) is connected to the second connecting pipe (132), and the other end of the water connecting pipe component (133) is connected to the first connecting pipe (131).

2. The high-efficiency hydrogen production equipment with waste heat recovery function according to claim 1, characterized in that: An installation box (14) is provided on the outside of the electrolytic tank (1). A water inlet pipe (141) is provided on one side of the installation box (14). One end of the water inlet pipe (141) extends to one side of the first connecting pipe (131), and the water inlet pipe (141) is connected to the first connecting pipe (131).

3. The high-efficiency hydrogen production equipment with waste heat recovery function according to claim 2, characterized in that: A drain pipe (142) is provided on one side of the mounting box (14), and a water pump (143) is fixedly connected to the outside of the mounting box (14). The drain pipe (142) and the output end of the water pump (143) are interconnected.

4. The high-efficiency hydrogen production equipment with waste heat recovery function according to claim 3, characterized in that: The water pump (143) has a connecting pipe at its input end, one end of which extends to one side of the second connecting pipe (132), and the second connecting pipe (132) is connected to the connecting pipe.

5. A high-efficiency hydrogen production device with waste heat recovery function according to claim 4, characterized in that: The inlet pipe (141) is used to introduce external condensate, and the drain pipe (142) is used to drain water.

6. A high-efficiency hydrogen production device with waste heat recovery function according to claim 5, characterized in that: The first gear (12) is meshed with the second gear (121) on both the left and right sides. The two sets of the second gear (121) are rotatably connected to the top surface of the can lid (11). The two sets of rotating rods (123) are fixedly connected to the two sets of the second gear (121) respectively.

7. A high-efficiency hydrogen production device with waste heat recovery function according to claim 6, characterized in that: An ion membrane (15) is fixedly connected to the middle of the inner cavity of the electrolytic tank (1). The ion membrane (15) is used to divide the electrolytic tank (1) into a cathode chamber and an anode chamber. A cathode conductive plate (16) is fixedly connected inside the cathode chamber, and an anode conductive plate (17) is fixedly connected inside the anode chamber. Both the anode conductive plate (17) and the cathode conductive plate (16) are electrically connected to an external power source, so that electricity is turned on, causing the pure water in the electrolytic tank (1) to undergo electrolysis and produce hydrogen and oxygen.

8. A high-efficiency hydrogen production device with waste heat recovery function according to claim 7, characterized in that: The top of the electrolytic tank (1) is provided with an exhaust assembly (2), which is provided in two sets. The exhaust assembly (2) includes an air pump fixedly connected to the top of the tank cover (11). One set of air pumps extends to the cathode chamber, and the other set of air pumps extends to the anode chamber. Both sets of air pumps are provided with exhaust pipes at their output ends.

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