Self-generating ammonia and hydrogen production integrated device
Through the self-generating integrated device for ammonia and hydrogen production, the electrocatalytic reaction of the metal-nitrate system is utilized to solve the problem of high energy consumption in the existing technology, realize self-generated power output and efficient hydrogen and ammonia production, generate high-value products, and have commercial feasibility.
Patent Information
- Application Number
- CN202510758089.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-06-09
- Publication Date
- 2025-09-16
AI Technical Summary
Existing technologies consume a lot of energy in the process of producing ammonia and hydrogen, making it difficult to achieve industrial application.
A self-generating integrated device for ammonia and hydrogen production is designed, including a cathode reaction system, an anode reaction system, an ion exchange membrane between the anode and cathode chambers, connecting lines and a shell. It uses a metal-nitrate system to carry out an electrocatalytic reaction to form a closed loop, output electrical energy and generate hydrogen and ammonia.
It achieves self-generated power output during the ammonia and hydrogen production processes, reduces energy consumption, improves economic benefits, and generates high-value products such as hydrogen and alum, making it commercially viable.
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Figure CN120649040A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to an integrated device for producing ammonia and hydrogen, and in particular to a self-generating integrated device for producing ammonia and hydrogen, belonging to the technical field of integrated devices for producing ammonia and hydrogen. Background Art
[0002] Whether it is the electrocatalytic production of hydrogen or the electroreduction of nitrate to synthesize ammonia, many research institutions at home and abroad are currently conducting research in this area. Although the continuous emergence of various catalysts has gradually reduced the synthesis efficiency and the conditions required for the reaction, it still requires huge energy consumption as a cost, and the economic effect is seriously lacking. It can only remain in the laboratory research stage and is difficult to apply industrially. Therefore, a self-generating ammonia and hydrogen production integrated device is designed to solve the above problems. Summary of the Invention
[0003] The main purpose of the present invention is to provide a self-generating integrated device for producing ammonia and hydrogen.
[0004] The purpose of the present invention can be achieved by adopting the following technical solutions:
[0005] A self-generating ammonia and hydrogen production integrated device comprises a cathode reaction system, an anode reaction system, an ion exchange membrane between the cathode and anode chambers, connecting lines, and a housing;
[0006] The cathode electrolyte is stored in a reaction vessel inside the cathode reaction system;
[0007] The cathode system electrode with the catalyst attached is immersed in the cathode electrolyte to react, and the cathode system electrode is connected to the wire to form a closed loop;
[0008] The anode gas outlet is located at the top of the anode reaction system and is externally connected to a hydrogen collection container;
[0009] The anolyte is an alkaline solution, which is directly stored in the anode reaction system and added into the system through the anode feed port.
[0010] The ion exchange membrane between the anode and cathode chambers is in direct contact with the cathode electrolyte and the anode electrolyte, and the membrane can be replaced at any time after the device is opened.
[0011] The two ends of the connecting line are connected to the positive and negative electrodes respectively, and the middle is connected to the device for outputting electric energy to the outside, so that the whole system forms a closed loop.
[0012] Preferably, the cathode reaction system has at least one cathode feed port and one cathode discharge port, and the cathode feed port and the cathode discharge port are directly connected to the cathode reaction system.
[0013] Preferably, the anode reaction system has at least one anode feed port, one anode gas discharge port and one anode liquid discharge port;
[0014] The anode feed port, anode gas discharge port, and anode liquid discharge port are all directly connected to the anode reaction system, wherein the anode gas discharge port is located at the top of the anode reaction system and is directly connected to the hydrogen collection container on the outside.
[0015] Preferably, the anode electrode material is a variety of metals that meet the self-generation requirements of the product;
[0016] The metals include, but are not limited to, aluminum, iron, manganese, zinc, and other metals having a relatively low standard electrode potential and a reactive value.
[0017] Preferably, the anode electrolyte is an alkaline solution, which is directly stored in the anode reaction system and added directly into the interior through the anode feed port, and after the reaction, the liquid after the reaction is directly discharged out of the system through the anode liquid discharge port.
[0018] Preferably, the cathode electrolyte is an industrial waste liquid or agricultural polluted liquid rich in nitrate, and the pollutants are used as raw materials to maintain the operation of the device.
[0019] Preferably, the cathode electrolyte is industrial nitrate-containing waste;
[0020] The cathode electrolyte has properties of acidic, neutral and alkaline, which correspond to different combinations for efficient reactions.
[0021] A catalyst is attached to the cathode system electrode;
[0022] When the cathode electrolyte is acidic, the core catalyst is a material based on titanium, ruthenium, tantalum, osmium, niobium, etc. that has high stability and high catalytic activity under acidic conditions;
[0023] When the cathode electrolyte is alkaline, a copper-based catalyst material is used which has high stability and high catalytic activity under alkaline conditions.
[0024] Preferably, the anode inlet of the anode reaction system is used to add the alkaline solution that reacts with the aluminum sheet, which is potassium hydroxide or sodium hydroxide solution, to provide reaction raw materials;
[0025] The anode gas outlet is used to output the hydrogen generated by the anode reaction. It is directly connected to a container for receiving hydrogen to collect high-value product hydrogen.
[0026] The anode liquid discharge port is used to discharge the liquid after the anode reaction;
[0027] The anode electrode material is a variety of metals that meet the self-generation requirements of the product, including but not limited to aluminum, iron, manganese, zinc and other metals with low standard electrode potential and reaction value;
[0028] Aluminum is placed in an alkaline solution of potassium hydroxide, which reacts spontaneously and produces hydrogen under standard conditions;
[0029] At the same time, aluminum is converted into high-economic-value products such as alum (potassium aluminum sulfate dodecahydrate) after the reaction. The economic value of the products is greater than the cost price of the raw aluminum, which has high economic returns and commercial feasibility.
[0030] The strong alkaline solution in which the anolyte reacts with the anode electrode sheet is usually a potassium hydroxide or sodium hydroxide solution, which can provide sufficient reaction raw materials.
[0031] Preferably, the ion exchange membrane between the anode and cathode chambers serves to connect the anode and cathode electrolytes, allowing the movement of ions so that the entire system forms a closed loop;
[0032] The type of ion exchange membrane between the anode and cathode chambers depends on the acidity or alkalinity of the cathode electrolyte;
[0033] When the cathode electrolyte is alkaline, the connecting membrane adopts a proton membrane to facilitate the rapid passage of water and protons in the reaction;
[0034] When the cathode electrolyte is an acidic substance, the connecting membrane is a bipolar membrane, and the solutions on both sides are acidic and alkaline respectively. At this time, the bipolar membrane can ensure the efficient progress of the reaction and prevent the occurrence of acid-base neutralization reaction.
[0035] Preferably, the raw material of the cathode electrolyte required for the operation of the cathode is a nitrate-rich liquid discharged from a factory or a polluted agricultural discharge.
[0036] Beneficial technical effects of the present invention:
[0037] The present invention provides a self-generating ammonia and hydrogen production integrated device. The ion exchange membrane between the anode and cathode chambers functions to connect the cathode and anode electrolytes, allowing ion movement, so that the entire system forms a closed loop. The type of ion exchange membrane between the anode and cathode chambers mainly depends on the acidity and alkalinity of the cathode electrolyte. When both the cathode electrolyte and the anode electrolyte are alkaline substances, the connecting membrane is a proton membrane to facilitate the rapid passage of water and protons in the reaction. When the cathode electrolyte is acidic, the connecting membrane is a bipolar membrane, and the H2O between the cathode and anode membrane composite layers dissociates into H + and OH - And pass through the anorectal membrane and cation membrane respectively, as H + and OH -The ion source has acidic and alkaline solutions on both sides, respectively. At this time, the bipolar membrane can ensure the efficient conduct of the reaction and prevent the occurrence of acid-base neutralization reactions. The two ends of the connecting line are connected to the cathode and anode electrodes respectively, and the middle is connected to a device that can store electrical energy. The entire system forms a closed loop, forming a fuel cell, and outputs electrical energy to the outside. The energy storage device is an energy-consuming device required by the outside world. This device can output a large amount of electrical energy to the outside world. The housing has at least two feed ports, at least two liquid discharge ports, and one gas discharge port, and is embedded with a display control component. The interior contains the entire system mentioned above. BRIEF DESCRIPTION OF THE DRAWINGS
[0038] Figure 1 A schematic diagram of the electrochemical theoretical potential principle of a preferred embodiment of a self-generating ammonia and hydrogen production integrated device according to the present invention;
[0039] Figure 2 A schematic cross-sectional view of the internal components of a self-generating device according to a preferred embodiment of a self-generating ammonia and hydrogen production integrated device of the present invention;
[0040] Figure 3 A schematic diagram of the distribution of internal components of a self-generating device in a slice format according to a preferred embodiment of a self-generating ammonia and hydrogen production integrated device of the present invention;
[0041] Figure 4 The figure is a schematic diagram showing the actual utilization of a self-generating device according to a preferred embodiment of a self-generating ammonia and hydrogen production integrated device of the present invention.
[0042] In the figure: 1- cathode reaction system, 2- anode reaction system, 3- ion exchange membrane between the anode and cathode chambers, 4- connecting line, 5- shell, 6- electrical appliances, 7- cathode feed port, 8- cathode discharge port, 9- cathode electrolyte, 10- cathode system electrode, 11- anode feed port, 12- anode gas discharge port, 13- anode liquid discharge port, 14- anode electrode, 15- anode electrolyte, 16- industrial waste liquid, 17- agricultural polluted liquid. DETAILED DESCRIPTION
[0043] In order to make the technical solution of the present invention more clear and specific to those skilled in the art, the present invention is further described in detail below with reference to embodiments and drawings, but the embodiments of the present invention are not limited thereto.
[0044] Example 1:
[0045] See also Figure 1 The principle of this self-generating ammonia and hydrogen production integrated device is: a chemical power source design of the metal-nitrate system, which can output electrical energy to the outside world while producing hydrogen and ammonia respectively at the two electrodes, namely the "hydrogen-ammonia symbiotic catalytic energy storage coupling system".
[0046] In the metal-nitrate system, the metal can be selected from aluminum, iron, manganese, zinc and other metals with low standard electrode potential and reaction value as the metal end to form the system. The theoretical potential of the electrocatalytic nitrate reduction is more positive than the metal hydrogen production reaction in alkaline solution. The two form a primary cell to generate electricity, which is thermodynamically feasible.
[0047] In the aluminum-nitrate system, the theoretical potential of the electrocatalytic nitrate reduction reaction is more positive than that of the aluminum sheet hydrogen production reaction in alkaline solution. The two form a primary cell to generate electricity, which is thermodynamically feasible.
[0048] The theoretical potential of the electrocatalytic nitrate reduction of the aluminum-nitrate system is 0.69 V vs. RHE, and the theoretical potential of the hydrogen production reaction of the aluminum sheet in alkaline solution is -1.52 V vs. RHE.
[0049] Compared with the theoretical potential of hydrogen absorption reaction in water electrolysis E=0V vs.RHE and the potential difference of 1.23V at the oxygen evolution reaction end E=1.23V vs.RHE, the system has the ability to output a large amount of electrical energy, with the potential difference reaching 2.21V, and outputting electrical energy.
[0050] In the iron-nitrate system, the theoretical potential of the electrocatalytic nitrate reduction reaction is more positive than that of the hydrogen production reaction of iron sheets in alkaline solution. The two form a primary cell to generate electricity, which is thermodynamically feasible.
[0051] The theoretical potential of the iron-nitrate system for electrocatalytic nitrate reduction is 0.69 V vs. RHE, and the theoretical potential of the iron sheet hydrogen production reaction in alkaline solution is -0.447 V vs. RHE.
[0052] Compared with the theoretical potential of hydrogen absorption reaction in water electrolysis E=0V vs.RHE, the potential difference of 1.23V at the oxygen evolution reaction end E=1.23V vs.RHE consumes 1.23V of electricity. This system has the ability to output a large amount of electrical energy to the outside, with the potential difference reaching 1.137V, and outputs electrical energy to the outside.
[0053] In the manganese-nitrate system, the theoretical potential of the electrocatalytic nitrate reduction reaction is more positive than that of the hydrogen production reaction of manganese sheets in alkaline solution. The two can form a primary cell to generate electricity, which is thermodynamically feasible.
[0054] The theoretical potential of the electrocatalytic nitrate reduction of the manganese-nitrate system is 0.69 V vs. RHE, and the theoretical potential of the hydrogen production reaction of the manganese sheet in alkaline solution is -1.185 V vs. RHE.
[0055] Compared with the theoretical potential of hydrogen absorption reaction in water electrolysis E=0V vs.RHE, the potential difference of 1.23V at the oxygen evolution reaction end E=1.23V vs.RHE consumes 1.23V of electrical energy. This system has the ability to output a large amount of electrical energy to the outside, with the potential difference reaching 1.875V, and outputs electrical energy to the outside.
[0056] In the zinc-nitrate system, the theoretical potential of electrocatalytic nitrate reduction is more positive than that of the hydrogen production reaction of zinc sheets in alkaline solution. The two form a primary cell to generate electricity, which is thermodynamically feasible.
[0057] The zinc-nitrate system has a theoretical potential of 0.69 V vs. RHE for electrocatalytic nitrate reduction, and a theoretical potential of -0.76 V vs. RHE for hydrogen production in alkaline solutions. Compared to the theoretical potentials of the hydrogen absorption reaction in water electrolysis (E = 0 V vs. RHE) and the oxygen evolution reaction (E = 1.23 V vs. RHE), the system has the ability to output a large amount of electrical energy, with a potential difference of 1.45 V.
[0058] Example 2:
[0059] See also Figure 2 and Figure 3 This self-generating integrated ammonia and hydrogen production device, when using an acid-base hybrid system, includes a cathode reaction system 1, an anode reaction system 2, a cathode and cathode electrolyte connection membrane 3, connecting lines 4, and a housing 5. Cathode reaction system 1 has at least one cathode feed port 7 and one cathode discharge port 8, which are directly connected to cathode reaction system 1, allowing direct inflow and outflow of cathode electrolyte 9 from the outside world. Cathode feed port 7 is used to add cathode electrolyte 9, which is a nitrate-rich industrial waste liquid to be treated. Cathode discharge port 8 is used to discharge the post-reaction liquid rich in ammonia molecules.
[0060] The cathode electrolyte 9 is directly stored in the reaction vessel inside the cathode reaction system 1 and is directly added to the cathode through the cathode feed port 7. The cathode electrolyte 9 is sourced from industrial nitrate-containing waste. After the reaction, the reacted liquid is directly discharged from the system through the cathode discharge port 8.
[0061] The main component of the acidic cathode electrolyte is an acidic solution that can electrolyze hydrogen ions, including but not limited to 0.5 molL -1 Sulfuric acid (pH = 0) and 0.1 molL -1 The composition of potassium nitrate solution, 1molL -1 of hydrochloric acid (pH = 0) and 0.1 molL -1 The composition of potassium nitrate solution, 1molL -1 Perchloric acid (pH = 0) and 0.1 molL -1 The composition of potassium nitrate solution, 1molL-1 of nitric acid (pH = 0) and 0.1 molL -1 The composition of potassium nitrate solution, 1molL -1 of nitric acid (pH = 0) and 0.1 molL -1 The composition of potassium nitrate solution, 1molL -1 of oxalic acid and 0.1 molL -1 The composition of potassium nitrate solution, 1molL -1 of glyoxylic acid and 0.1 molL -1 The composition of potassium nitrate solution, 1molL -1 of pyruvic acid (lactic acid) and 0.1 molL -1 The composition of potassium nitrate solution, 1molL -1 Formic acid (formaldehyde) and 0.1 molL -1 of potassium nitrate solution.
[0062] When the acidic cathode electrolyte is oxalic acid + nitrate, the cathode product mainly prepares glycine; when the acidic cathode electrolyte is glyoxylic acid + nitrate, the cathode product prepares glycine; when the acidic cathode electrolyte is pyruvic acid (lactic acid) + nitrate, the cathode product prepares alanine; when the acidic cathode electrolyte is formic acid (formaldehyde) + nitrate, the cathode product prepares formamide, and the rest prepare ammonia molecules.
[0063] The core catalyst attached to the cathode system electrode 10 helps the reaction to occur efficiently. The electrode 10 with the catalyst attached is directly immersed in the cathode electrolyte 9 to react. The core catalyst attached to the cathode system electrode 10 helps the reaction to occur efficiently. The cathode electrolyte 9 is acidic, and the main core catalyst is a titanium-based material. The titanium-based material has excellent stability and has high stability in strong acid (pH=0). This design ensures the continuous reaction of the reaction, while also reducing the time cost and economic cost of purchasing caused by replacing the electrode. The main function of the electrode 10 is to conduct electricity and is connected to the following wires to form a closed loop.
[0064] Acidic cathode electrodes can be made of titanium-based materials, which have excellent stability and high stability in strong acid (pH = 0). This design ensures the continuous reaction and also reduces the time cost and economic cost of purchasing electrodes due to replacement.
[0065] The titanium-based material of the acidic cathode electrode can be attached with a variety of materials that are stable in acid and have high catalytic activity. Materials that can be attached upward include but are not limited to Ruthenium, Pd Palladium, Ag Silver, Ir Iridium, Pt Platinum, Au Gold, and other highly catalytically active and stable materials.
[0066] The acidic cathode electrode titanium ruthenium material has high catalytic activity in this system, which enables the system to obtain a high yield. At the same time, it has high stability in the acidic cathode electrolyte at this time, and the system reacts stably for a long time.
[0067] The titanium palladium material of the acidic cathode electrode has high catalytic activity in this system, which enables the system to obtain a high yield. At the same time, it has high stability in the acidic cathode electrolyte at this time, and the system reacts stably for a long time.
[0068] The acidic cathode electrode titanium silver material has high catalytic activity in this system, which enables the system to obtain a high yield. At the same time, it has high stability in the acidic cathode electrolyte at this time, and the system reacts stably for a long time.
[0069] The titanium-iridium material of the acidic cathode electrode has high catalytic activity in this system, enabling the system to obtain a high yield. At the same time, it has high stability in the acidic cathode electrolyte, and the system reacts stably for a long time.
[0070] The titanium-platinum material of the acidic cathode electrode has high catalytic activity in this system, enabling the system to obtain a high yield. At the same time, it has high stability in the acidic cathode electrolyte, and the system reacts stably for a long time.
[0071] The acidic cathode electrode titanium material has high catalytic activity in this system, which enables the system to obtain a high yield. At the same time, it has high stability in the acidic cathode electrolyte at this time, and the system reacts stably for a long time.
[0072] The acidic cathode electrode may also be selected from other compounds that remain stable in strong acidic solutions and have a catalytic effect on the nitrate reduction reaction under acidic conditions. Such compounds include but are not limited to barium sulfide, lead sulfide, and other compounds.
[0073] The anode reaction system 2 has at least one anode feed port 11, an anode gas discharge port 12 and an anode liquid discharge port 13. The anode feed port 11 of the anode reaction system 2 is used to add the alkaline solution that reacts with the aluminum sheet, usually potassium hydroxide or sodium hydroxide solution, to provide reaction raw materials. The anode gas discharge port 12 is used to output the hydrogen generated by the anode reaction. It is directly connected to an external container for receiving hydrogen, so that high-value product hydrogen can be collected. The anode liquid discharge port 13 is used to discharge the liquid after the anode reaction, so as to facilitate timely replacement of the reaction raw materials and ensure efficient reaction of the entire system.
[0074] The main materials of the anode electrode are a variety of metals that can meet the self-generation needs of the product. As the metal end constitutes the system, the theoretical potential of the electrocatalytic nitrate reduction reaction is more positive than the metal hydrogen production reaction in alkaline solution. The two form a primary battery to generate electricity and produce high value-added products at the same time. The metals include but are not limited to aluminum, iron, manganese, zinc and other metals with low standard electrode potential and reaction value.
[0075] When the main material of the anode electrode is aluminum, it is placed in an alkaline solution of potassium hydroxide. Under standard conditions, it spontaneously reacts and generates hydrogen. As the most abundant metal on Earth, aluminum has high production and low market price. This perfectly matches the theoretical design of the product and its expected economic benefits. Furthermore, after the reaction, aluminum is converted into high-value products such as alum (potassium aluminum sulfate dodecahydrate). The economic value of these products is greater than the cost price of the raw aluminum, resulting in high economic returns and commercial feasibility.
[0076] When the anode electrode is primarily made of metals with low standard electrode potentials and reactive properties, such as iron, manganese, and zinc, the theoretical potential of the electrocatalytic nitrate reduction reaction is more positive than the theoretical potential of the hydrogen production reaction on iron sheets in alkaline solutions. The combination of the two for generating electricity in a galvanic cell is thermodynamically feasible. When placed in an alkaline potassium hydroxide solution, under standard conditions, the reaction spontaneously reacts and produces hydrogen.
[0077] Anolyte 15 is a strongly alkaline solution, stored directly in the anode reaction system 2 and fed directly into the system through the anode feed port 11. Anolyte 15 is the aforementioned strongly alkaline solution that reacts with aluminum, typically potassium hydroxide or sodium hydroxide solution, providing a sufficient amount of the reaction raw materials. The solution is stored directly in the internal reaction vessel. After the reaction, the reacted liquid is discharged directly from the system through the anode liquid discharge port 13.
[0078] The anolyte is the aforementioned strongly alkaline solution that reacts with the metal. Its main component is an alkaline solution that can electrolyze hydroxide ions and provide sufficient reaction raw materials. The solution is directly stored in the internal reaction vessel.
[0079] Alkaline anolyte includes but is not limited to 1 molL -1 KOH, NaOH (pH = 14), 1 mol L -1 LiOH (pH = 14) 1 mol L -1 RbOH (pH = 14), 1 mol L -1 CsOH (pH = 14), 1 mol L -1 FrOH (pH = 14), 1 mol L -1 Ca(OH)2, 1molL -1 of Ba(OH)2 solution.
[0080] The ion exchange membrane 3 between the cathode and anode chambers is in direct contact with the cathode electrolyte 9 and the anode electrolyte 15, and is located between the two. Its function is to connect the cathode and anode electrolytes, allowing the movement of ions, so that the entire system forms a closed loop.
[0081] When the cathode electrolyte is an acidic substance, the connecting membrane is a bipolar membrane. The H2O between the composite layers of the anion and cation membranes dissociates into H+ and OH- and passes through the anion membrane and the cation membrane respectively, serving as the source of H+ and OH- ions. The solutions on both sides are acidic and alkaline respectively. At this time, the bipolar membrane can ensure the efficient progress of the reaction and prevent the occurrence of acid-base neutralization reaction.
[0082] The two ends of the connection line 4 are connected to the positive and negative electrodes respectively, and the middle is connected to the device 6 that can store electrical energy, so that the entire system forms a closed loop, forming a fuel cell and outputting electrical energy to the outside.
[0083] The housing 5 has at least two feed ports 7, 11 and at least two liquid discharge ports 8, 12 and one gas discharge port 13. The interior contains the entire system mentioned above.
[0084] Example 3: See Figure 1 and Figure 2 When an alkaline system is used, this embodiment is basically the same as the first embodiment, with the following special features:
[0085] The main component of the alkaline cathode electrolyte is an alkaline solution that can electrolyze hydroxide ions, including but not limited to 1 molL -1 KOH (pH = 14) and 0.1 molL -1 The composition of potassium nitrate solution, 1molL -1 NaOH (pH = 14) and 0.1 molL -1 The composition of potassium nitrate solution, 1 mol L -1 LiOH (pH = 14) and 0.1 molL -1 The composition of potassium nitrate solution, 1moL -1 RbOH (pH = 14) and 0.1 molL -1 The composition of potassium nitrate solution, 1molL -1 CsOH (pH = 14) and 0.1 molL -1 The composition of potassium nitrate solution, 1molL -1 FrOH (pH = 14) and 0.1 mol L -1 The composition of potassium nitrate solution, 1molL -1 Ca(OH)2 and 0.1molL -1 The composition of potassium nitrate solution, 1molL -1 Ba(OH) 2 With 0.1 molL -1of potassium nitrate solution.
[0086] The cathode system electrode 10 is attached to a core catalyst, primarily made of copper-based catalyst materials. Numerous studies have demonstrated the efficient catalytic performance of copper-based materials in the alkaline reduction of nitrate to ammonia. Furthermore, the nanoscale quantum dots used in the catalyst further enhance the efficiency of the reaction. Electrode 10 primarily functions as a conductor and is connected to the following wires to form a closed circuit.
[0087] The titanium-based material of the alkaline cathode electrode can be attached to a variety of materials that are stable in alkaline environments and have high catalytic activity. These materials include, but are not limited to, Ruthenium, Pd, Ag, Ir, Pt, Au, and other highly catalytically active and stable materials.
[0088] The titanium ruthenium material of the alkaline cathode electrode has high catalytic activity in this system, which enables the system to obtain a high yield. At the same time, it has high stability in the alkaline cathode electrolyte at this time, and the system reacts stably for a long time.
[0089] The titanium palladium material of the alkaline cathode electrode has high catalytic activity in this system, which enables the system to obtain a high yield. At the same time, it has high stability in the alkaline cathode electrolyte at this time, and the system reacts stably for a long time.
[0090] The alkaline cathode electrode titanium silver material has high catalytic activity in this system, which enables the system to obtain a high yield. At the same time, it has high stability in the alkaline cathode electrolyte at this time, and the system reacts stably for a long time.
[0091] The alkaline cathode electrode titanium iridium material has high catalytic activity in this system, which enables the system to obtain a high yield. At the same time, it has high stability in the alkaline cathode electrolyte at this time, and the system reacts stably for a long time.
[0092] The titanium platinum material of the alkaline cathode electrode has high catalytic activity in this system, which enables the system to obtain a high yield. At the same time, it has high stability in the alkaline cathode electrolyte at this time, and the system reacts stably for a long time.
[0093] The alkaline cathode electrode titanium material has high catalytic activity in this system, enabling the system to achieve high yields. At the same time, it has high stability in the alkaline cathode electrolyte, and the system reacts stably for a long time.
[0094] The alkaline cathode electrode may also be selected from other related base catalysts that still have high catalytic nitrate reduction activity in a strong alkaline solution, including but not limited to nickel Ni-based, cobalt Co-based, zinc Zn-based and other high-efficiency catalyst bases.
[0095] The ion exchange membrane 3 between the anode and cathode chambers adopts a proton membrane to facilitate the rapid passage of water and protons in the reaction, thereby ensuring the efficient progress of the reaction.
[0096] The self-generating ammonia and hydrogen production integrated device device designed based on the overall concept of the present invention comprises a cathode reaction system 1, an anode reaction system 2, an ion exchange membrane between the anode and cathode chambers), a connecting line), and a shell 5. The above components are combined to enable the present invention to realize the integrated function of self-generating ammonia and hydrogen production.
[0097] The above are only further embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes based on the technical solutions and concepts of the present invention within the scope disclosed by the present invention, which fall within the scope of protection of the present invention.
Claims
1. A self-generating ammonia and hydrogen production integrated device, comprising a cathode reaction system (1), an anode reaction system (2), an ion exchange membrane (3) between the cathode and anode chambers, a connecting line (4), a housing (5), and electrical appliances (6); Its characteristics are: The cathode electrolyte (9) is stored in a reaction container inside the cathode reaction system (1); The cathode system electrode (10) with the catalyst attached thereto is immersed in the cathode electrolyte (9) to react, and the cathode system electrode (10) is connected to a wire to form a closed circuit; The anode gas outlet (12) is located at the top of the anode reaction system (2) and is externally connected to a hydrogen collection container; The anolyte (15) is an alkaline solution, which is directly stored in the anode reaction system (2) and is added into the anode through the anode feed port (11); The ion exchange membrane (3) between the cathode and anode chambers is in direct contact with the cathode electrolyte (9) and the anode electrolyte (15), and is located between the two so that the membrane can be replaced at any time after the device is opened. The two ends of the connection line (4) are respectively connected to the positive and negative electrodes, and the middle is connected to the external power output device (6), so that the entire system forms a closed loop.
2. A self-generating ammonia and hydrogen production integrated device according to claim 1, characterized in that: The cathode reaction system (1) has at least one cathode feed port (7) and one cathode discharge port (8), and the cathode feed port (7) and the cathode discharge port (8) are directly connected to the cathode reaction system (1).
3. A self-generating ammonia and hydrogen production integrated device according to claim 1, characterized in that: The anode reaction system (2) has at least one anode feed port (11), one anode gas discharge port (12) and one anode liquid discharge port (13); The anode feed port (11), the anode gas discharge port (12), and the anode liquid discharge port (13) are all directly connected to the anode reaction system (2), wherein the anode gas discharge port (12) is located at the top of the anode reaction system (2) and is directly connected to the hydrogen collection container on the outside.
4. A self-generating ammonia and hydrogen production integrated device according to claim 1, characterized in that: The material of the anode electrode (14) is a variety of metals that meet the self-generation requirements of the product; The metals include, but are not limited to, aluminum, iron, manganese, zinc, and other metals having a relatively low standard electrode potential and a reactive value.
5. A self-generating ammonia and hydrogen production integrated device according to claim 1, characterized in that: The anode electrolyte (15) is an alkaline solution, which is directly stored in the anode reaction system (2) and directly added into the interior through the anode feed port (11). After the reaction, the liquid after the reaction is directly discharged from the system through the anode liquid discharge port (13).
6. A self-generating ammonia and hydrogen production integrated device according to claim 1, characterized in that: The cathode electrolyte (9) is industrial waste liquid (16) or agricultural polluted liquid (17) rich in nitrate radicals, and the pollutants are used as raw materials to maintain the operation of the device.
7. A self-generating ammonia and hydrogen production integrated device according to claim 1, characterized in that: Catholyte (9), which is industrial nitrate-containing waste; The cathode electrolyte (9) has properties of acidic, neutral and alkaline, and can be used for efficient reactions in different combinations. A catalyst is attached to the cathode system electrode (10); When the cathode electrolyte (9) is acidic, the core catalyst is a material based on titanium, ruthenium, tantalum, osmium, niobium, etc., which has high stability and high catalytic activity under acidic conditions; When the cathode electrolyte (9) is alkaline, a material having high stability and high catalytic activity under alkaline conditions, a copper-based catalyst material is used.
8. A self-generating ammonia and hydrogen production integrated device according to claim 1, characterized in that: The anode inlet (11) of the anode reaction system (2) is used to add the alkaline solution that reacts with the aluminum sheet, which is potassium hydroxide or sodium hydroxide solution, to provide reaction raw materials; The anode gas outlet (12) is used to output hydrogen generated by the anode reaction and is directly connected to a container for receiving hydrogen to collect high-value product hydrogen; The anode liquid discharge port (13) is used to discharge the liquid after the anode reaction; The anode electrode (14) is made of a variety of metals that meet the self-generation requirements of the product, including but not limited to aluminum, iron, manganese, zinc and other metals with low standard electrode potential and reaction value; Aluminum is placed in an alkaline solution of potassium hydroxide, which reacts spontaneously and produces hydrogen under standard conditions; At the same time, aluminum is converted into alum after the reaction; The anolyte (15) is a strong alkaline solution that reacts with the anode electrode sheet, usually a potassium hydroxide or sodium hydroxide solution, which can provide sufficient reaction raw materials.
9. A self-generating ammonia and hydrogen production integrated device according to claim 1, characterized in that: The ion exchange membrane (3) between the cathode and anode chambers serves to connect the cathode and anode electrolytes, allowing the movement of ions, so that the entire system forms a closed loop; The type of ion exchange membrane (3) between the anode and cathode chambers depends on the acidity or alkalinity of the cathode electrolyte (9); When the cathode electrolyte (9) is an alkaline substance, the connecting membrane adopts a proton membrane to facilitate the rapid passage of water and protons in the reaction; When the cathode electrolyte (9) is an acidic substance, the connecting membrane is a bipolar membrane, and the solutions on both sides are acidic and alkaline respectively. At this time, the bipolar membrane can ensure the efficient progress of the reaction and prevent the occurrence of acid-base neutralization reaction.
10. A self-generating ammonia and hydrogen production integrated device according to claim 9, characterized in that: The raw materials of the cathode electrolyte (9) required for the cathode to work are factory discharge polluted liquid (16) and agricultural discharge polluted liquid (17) rich in nitrate radicals.