Reactor and method for hydrogen production from wastewater

Abstract

A reactor and method for hydrogen production from wastewater. The reactor for hydrogen production from wastewater comprises: an electrolytic cell (1), a gas-liquid separation assembly (2), a desorption unit (3), a first control valve, and a second control valve, wherein the electrolytic cell (1) has an electrolyte inlet (11) and an electrolyte outlet (12); the gas-liquid separation assembly (2) comprises a gas-liquid separation unit (21), the gas-liquid separation unit (21) has a separation inlet (211) and a separation outlet (212), and the separation inlet (211) is in communication with the electrolyte outlet (12); the desorption unit (3) has a liquid inlet (31), a liquid outlet (32), a carrier gas inlet (33), and a carrier gas outlet (34), the liquid inlet (31) is connected to the separation outlet (212), and the liquid outlet (32) is connected to the electrolyte inlet (11); the first control valve is connected to the separation outlet (212) to control the liquid discharge rate at the separation outlet (212); and the second control valve is connected to the carrier gas inlet (33) to control the gas inlet rate at the carrier gas inlet (33). In hydrogen production using the reactor, the purity can be conveniently adjusted.

Description

A wastewater hydrogen production reactor and method

[0001] Cross-reference to related applications

[0002] This application is based on and claims priority to Chinese Patent Application No. 202410563763.0, filed on May 8, 2024, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This disclosure relates to the field of wastewater hydrogen production technology, specifically to a wastewater hydrogen production reactor and method. Background Technology

[0004] Currently, commercial water electrolysis hydrogen production technology suffers from problems such as poor oxygen evolution reaction kinetics, high risk of hydrogen-oxygen mixing, and high water resource requirements.

[0005] In related technologies, the use of wastewater containing organic matter to replace oxygen evolution reaction (OER) has been extensively studied, and various high-efficiency electrochemical catalytic materials have been developed for different water quality systems. However, there is still a lack of targeted research on wastewater-based hydrogen production processes and reactors. For example, when replacing OER with oxidation reactions such as alcohol-acid conversion, the anode and cathode membranes of conventional electrolytic reactors can be removed. However, this can lead to the mixing of small amounts of gaseous impurities generated at the anode with hydrogen generated at the cathode, causing difficulties in subsequent hydrogen purification and storage, such as poisoning of the hydrogen storage medium. At the same time, the cations generated at the anode come into contact more easily with scale-forming anions such as hydroxide and carbonate ions generated at the cathode, making it easier to generate fouling and leading to electrode passivation. Summary of the Invention

[0006] This disclosure aims to at least partially address one of the technical problems in the related art. To this end, embodiments of this disclosure propose a wastewater hydrogen production reactor, which offers convenient adjustment of hydrogen purity and a long service life.

[0007] The embodiments of this disclosure propose a wastewater hydrogen production method, which has the advantage of good hydrogen production efficiency.

[0008] The wastewater hydrogen production reactor disclosed in this embodiment includes:

[0009] An electrolytic cell having an electrolyte inlet and an electrolyte outlet, wherein the electrolyte inlet is used to introduce electrolyte;

[0010] A gas-liquid separation assembly includes a gas-liquid separation unit having a separation inlet and a separation outlet. The separation inlet is connected to the electrolyte outlet to receive the electrolyte discharged from the electrolyte outlet and perform gas-liquid separation.

[0011] The desorption unit has a liquid inlet and a liquid outlet. The liquid inlet is connected to the separation outlet to receive the electrolyte separated by the gas-liquid separation unit. The desorption unit also has a carrier gas inlet and a carrier gas outlet. The carrier gas inlet is used to introduce carrier gas so that the introduced carrier gas can remove residual gas in the electrolyte in the desorption unit. The liquid outlet is connected to the electrolyte inlet so that the electrolyte can be introduced into the electrolytic cell.

[0012] A first control valve and a second control valve, wherein the first control valve is connected to the separation outlet to control the discharge flow rate of the separation outlet, and the second control valve is connected to the carrier gas inlet to control the intake flow rate of the carrier gas inlet.

[0013] The wastewater hydrogen production reactor of this disclosure can control the gas impurity removal efficiency by controlling the carrier gas volume of the desorption unit, thereby achieving a higher reaction efficiency in the electrolytic cell (e.g., increasing the reaction conversion rate from 80% to 95%), and thus reducing the concentration of the main reactants in the system to a lower level. The liquid flushing rate can also be controlled by controlling the reflux ratio (i.e., decoupling from impurity introduction), thereby achieving electrode surface decontamination.

[0014] In some embodiments, the wastewater hydrogen production reactor of this disclosure further includes a detection component, which includes a first detection element and a second detection element. The first detection element is used to detect the organic matter content in the electrolyte in the electrolytic cell, and the second detection element is used to detect the power generation of the electrolytic cell connected to the power source. The detection component is electrically connected to both the first control valve and the second control valve so as to control the opening and closing degree of the first control valve and the second control valve according to the detected organic matter content and power generation information.

[0015] In some embodiments, the gas-liquid separation assembly further includes a gas storage unit having a gas storage inlet and an exhaust port, wherein the gas storage inlet is connected to the exhaust port to receive the gas discharged by the gas-liquid separation unit.

[0016] In some embodiments, the wastewater hydrogen production reactor of this disclosure further includes a recovery component, which includes a recovery unit, a recovery inlet, a recovery outlet, and an additive inlet. The desorption unit also has a recovery liquid outlet connected to the recovery inlet so that the recovery liquid discharged from the desorption unit can be introduced into the recovery unit. The additive inlet is used to introduce an additive into the recovery unit so that the additive reacts with the recovery liquid in the recovery unit to form a recyclable byproduct.

[0017] In some embodiments, the recovery assembly further includes a conditioning unit having a conditioning inlet and a conditioning outlet. The conditioning inlet is connected to the recovery outlet, and the conditioning outlet is connected to the electrolyte inlet, so that the liquid from the recovery unit is introduced into the conditioning unit. The conditioning unit is used to adjust the pH value of the liquid in the conditioning unit and introduce the conditioned liquid into the electrolytic cell.

[0018] The wastewater hydrogen production method of this disclosure is carried out using the wastewater hydrogen production reactor described in any one of the above embodiments, and includes the following steps:

[0019] Wastewater is used as the electrolyte and passed into the electrolytic cell for electrolysis.

[0020] The electrolyte after electrolysis is separated into gas and liquid by a gas-liquid separation component, and the separated electrolyte is fed into a desorption unit. The flow rate of the electrolyte fed into the desorption unit is controlled by the opening and closing degree of the first control valve.

[0021] The flow rate of carrier gas introduced into the desorption unit is controlled by the opening and closing degree of the second control valve, so that the carrier gas carries away the impurity gas remaining in the electrolyte.

[0022] The electrolyte, after removing impurity gases, is passed into the electrolytic cell so that the electrolyte can be recycled and reused.

[0023] In some embodiments, the wastewater hydrogen production method of this disclosure further includes the following steps:

[0024] A portion of the electrolyte in the desorption unit is passed into the recovery unit, and an additive is introduced into the recovery unit so that the electrolyte in the recovery unit reacts with the additive to form a recyclable byproduct.

[0025] In some embodiments, the wastewater hydrogen production method of this disclosure further includes the following steps:

[0026] The electrolyte that has reacted with the additives in the recovery unit is passed into the conditioning unit to adjust the pH value of the electrolyte, and then the conditioned electrolyte is passed into the electrolytic cell.

[0027] In some embodiments, a first detection element is used to detect the organic matter content W in the electrolyte of the electrolytic cell, a second detection element is used to detect the power generation P of the electrolytic cell connected to the power source, the flow rate of the electrolyte introduced into the desorption unit is Q, and the flow rate of the carrier gas introduced into the desorption unit is G.

[0028] When the organic matter content W in the electrolyte is a fixed value, the flow rate G of the carrier gas is directly proportional to the power generation P.

[0029] In some embodiments, the wastewater hydrogen production method of this disclosure further includes the following steps:

[0030] When the power generation P is a fixed value, the flow rate Q of the electrolyte and the flow rate G of the carrier gas are both directly proportional to the organic matter content W. Attached Figure Description

[0031] Figure 1 is a schematic diagram of the structure of the wastewater hydrogen production reactor according to an embodiment of this disclosure.

[0032] Reference numerals: 1. Electrolyte cell; 11. Electrolyte inlet; 12. Electrolyte outlet; 2. Gas-liquid separation assembly; 21. Gas-liquid separation unit; 211. Separation inlet; 212. Separation outlet; 213. Exhaust port; 22. Gas storage unit; 221. Gas storage inlet; 3. Desorption unit; 31. Liquid inlet; 32. Liquid outlet; 33. Carrier gas inlet; 34. Carrier gas outlet; 4. Recovery assembly; 41. Recovery unit; 411. Recovery inlet; 412. Recovery outlet; 413. Additive inlet; 414. Recovery liquid outlet; 5. Conditioning unit; 51. Conditioning inlet; 52. Conditioning outlet. Detailed Implementation

[0033] Embodiments of this disclosure are described in detail below, with examples of these embodiments illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this disclosure, and should not be construed as limiting it.

[0034] The wastewater hydrogen production reactor of this disclosure is described below with reference to the accompanying drawings.

[0035] As shown in Figure 1, the wastewater hydrogen production reactor of this embodiment includes: an electrolytic cell 1, a gas-liquid separation component 2, a desorption unit 3, a first control valve, and a second control valve.

[0036] Electrolytic cell 1 has an electrolyte inlet 11 and an electrolyte outlet 12. The electrolyte inlet 11 is used to introduce electrolyte. Gas-liquid separation assembly 2 includes a gas-liquid separation unit 21, which has a separation inlet 211 and a separation outlet 212. The separation inlet 211 is connected to the electrolyte outlet 12 to receive the electrolyte discharged from the electrolyte outlet 12 and perform gas-liquid separation. Desorption unit 3 has a liquid inlet 31 and a liquid outlet 32. The liquid inlet 31 is connected to the separation outlet 212 to receive the electrolyte separated by the gas-liquid separation unit 21. The desorption unit 3 has a carrier gas inlet 33 and a carrier gas outlet 34. The carrier gas inlet 33 is used to introduce carrier gas so that the introduced carrier gas can remove residual gas in the electrolyte in the desorption unit 3. The liquid outlet 32 ​​is connected to the electrolyte inlet 11 to introduce electrolyte into the electrolytic cell 1. The first control valve is connected to the separation outlet 212 to control the discharge flow rate of the separation outlet 212, and the second control valve is connected to the carrier gas inlet 33 to control the intake flow rate of the carrier gas inlet 33.

[0037] Specifically, as shown in Figure 1, the electrolytic cell 1 includes an electrolytic container, a cathode, and an anode, wherein the cathode and anode are designed without a diaphragm, and the cathode and anode are connected to a power supply. An electrolyte inlet 11 is used to introduce electrolyte (which can be industrial wastewater), and an electrolyte outlet 12 is used to discharge the electrolyte after electrolysis. Optionally, the electrolytic cell 1 also has a gas vent for emergency venting in case of overpressure within the electrolytic cell 1; the gas vent is normally closed.

[0038] In electrolytic cell 1, the reaction that occurs at the anode is an oxidation reaction without gas production, such as the oxidation of alcohol to acid. Optionally, the standard electrode potential of the power supply is below 1.23V.

[0039] The gas-liquid separation unit 21 receives the electrolyte discharged from the electrolyte outlet 12 and performs gas-liquid separation. Optionally, the gas-liquid separation unit 21 can be a gas-liquid separator. The separated liquid is then mixed with the carrier gas introduced through the carrier gas inlet in the desorption unit 3, and the carrier gas outlet 34 is used to discharge the remaining carrier gas. The function of the desorption unit 3 is to receive the electrolyte processed by the gas-liquid separation unit 21 and remove the residual gas through the carrier gas. The processed electrolyte is then reintroduced into the electrolytic cell 1 through the liquid outlet 32.

[0040] The first and second control valves are used to control the flow rates of the gas-liquid separation unit 21 and the carrier gas inlet 33, respectively, to ensure the stability and efficiency of the electrolysis process. The first control valve is used to adjust the discharge flow rate of the gas-liquid separation unit 21, while the second control valve is used to control the inlet flow rate of the carrier gas. That is to say, given a certain requirement for the purity of the produced hydrogen (e.g., hydrogen purity greater than 99%), the electrolyte circulation rate can be adjusted by the first control valve to control the organic matter content in the wastewater (i.e., the circulation rate increases when the organic matter content increases, in order to suppress scaling on the electrode surface); and to further consider the changes in gas impurity backflow caused by the change in circulation rate, the gas-liquid flow ratio in the desorption unit 3 can be adjusted in conjunction with the power fluctuation of the upstream renewable energy source (i.e., the power supply) (e.g., when the power supply power increases, resulting in more impurities generated during electrolysis, the gas-liquid flow ratio can be appropriately increased to increase the desorption effect, reduce impurity mixing, and obtain the required hydrogen purity).

[0041] It should be noted that the carrier gas can be air or an inert gas such as nitrogen.

[0042] In other words, the wastewater hydrogen production reactor of this embodiment can control the gas impurity removal efficiency by controlling the carrier gas volume of the desorption unit 3, thereby achieving a higher reaction efficiency within the electrolysis cell 1 (e.g., increasing the reaction conversion rate from 80% to 95%), and thus reducing the concentration of the main reactant in the system to a lower level. The liquid flushing rate can also be controlled by controlling the reflux ratio (i.e., decoupling from impurity introduction), thereby achieving electrode surface decontamination.

[0043] In some embodiments, the wastewater hydrogen production reactor of this disclosure further includes a detection component, which includes a first detection element and a second detection element. The first detection element is used to detect the organic matter content in the electrolyte in the electrolytic cell 1, and the second detection element is used to detect the power generation of the electrolytic cell 1 connected to the power source. The detection component is electrically connected to both the first control valve and the second control valve so as to control the opening and closing degree of the first control valve and the second control valve according to the detected organic matter content and power generation information.

[0044] Understandably, the first and second detection devices can record the detected information and make numerical judgments, that is, compare the detected organic matter content and power generation detection values ​​with preset values. If the detection value exceeds the preset value, a control command is sent to the first and second control valves, and the opening and closing degree of the first and second control valves is controlled according to the numerical range of the detection value exceeding the preset value, so as to adjust the carrier gas flow rate and electrolyte flow rate accordingly.

[0045] In some embodiments, the gas-liquid separation assembly 2 further includes a gas storage unit 22, which has a gas storage inlet 221 and a gas-liquid separation unit 21, which also has an exhaust port 213. The gas storage inlet 221 is connected to the exhaust port 213 so as to receive the gas discharged by the gas-liquid separation unit 21.

[0046] Specifically, as shown in Figure 1, the gas storage inlet 221 and the exhaust port 213 are connected by a pipeline. The gas discharged from the gas-liquid separation unit 21 is hydrogen. Therefore, the gas storage unit 22 must meet the hydrogen storage requirements in terms of material, sealing performance and pressure resistance to ensure the safe storage of hydrogen.

[0047] In some embodiments, the wastewater hydrogen production reactor of this disclosure further includes a recovery component 4, which includes a recovery unit 41. The recovery unit 41 includes a recovery inlet 411, a recovery outlet 412, and an additive inlet 413. The desorption unit 3 also has a recovery liquid outlet 414, which is connected to the recovery inlet 411 so that the recovery liquid discharged from the desorption unit 3 can be passed into the recovery unit 41. The additive inlet 413 is used to introduce additives into the recovery unit 41 so that the additives react with the recovery liquid in the recovery unit 41 to form recyclable byproducts.

[0048] Specifically, as shown in Figure 1, part of the electrolyte in the desorption unit 3 can be introduced into the recovery unit 41 through the recovery liquid outlet 414 and the recovery inlet 411. After being mixed with additives in the recovery unit 41 to form by-products, it is discharged through the recovery outlet 412.

[0049] It is understandable that the electrolyte entering the recycling unit 41 can be used to obtain corresponding byproducts (such as benzoic acid) through pH adjustment and other means. The electrolyte after separating the byproducts flows back into the electrolytic cell 1 to achieve reuse.

[0050] In some embodiments, the recovery assembly 4 further includes a conditioning unit 5, which has a conditioning inlet 51 and a conditioning outlet 52. The conditioning inlet 51 is connected to the recovery outlet 412, and the conditioning outlet 52 is connected to the electrolyte inlet 11, so that the liquid from the recovery unit 41 is introduced into the conditioning unit 5. The conditioning unit 5 is used to adjust the pH value of the liquid in the conditioning unit 5 and introduce the conditioned liquid into the electrolytic cell 1.

[0051] It is understandable that the electrolyte after byproducts are generated in the recycling unit 41 needs to have its pH adjusted before being introduced into the electrolytic cell 1 so that this portion of the electrolyte meets the requirements of the electrolytic cell 1, thereby enabling the reuse of the electrolyte.

[0052] The wastewater hydrogen production method of this disclosure is described below.

[0053] The wastewater hydrogen production method of this disclosure embodiment is completed using any of the wastewater hydrogen production reactors in the above embodiments, and includes the following steps:

[0054] Wastewater is passed into electrolytic cell 1 as an electrolyte and electrolysis is carried out. It should be noted that the wastewater can be industrial wastewater, such as alcohol wastewater, in which case the oxidation reaction of organic compounds such as alcohols in the wastewater is used instead of the oxygen evolution reaction.

[0055] The electrolyzed electrolyte is separated into gas and liquid components using a gas-liquid separation assembly 2, and the separated electrolyte is then fed into a desorption unit 3. The flow rate of the electrolyte into the desorption unit 3 is controlled by the opening and closing of a first control valve. The flow rate of the carrier gas introduced into the desorption unit 3 is controlled by the opening and closing of a second control valve, so that the carrier gas carries away the impurity gases remaining in the electrolyte. The electrolyte, now free of impurity gases, is then fed into the electrolytic cell 1, allowing the electrolyte to be recycled and reused.

[0056] In desorption unit 3, a carrier gas is introduced to remove any remaining small amounts of gas (hydrogen, impurity gases) from the electrolyte. The carrier gas can be an inert gas such as air or nitrogen. By adjusting the gas-liquid flow rate ratio of desorption unit 3 (i.e., the ratio of the carrier gas flow rate to the electrolyte flow rate), the desired impurity removal and desorption effect can be achieved. The desorbed electrolyte is then returned to electrolytic cell 1. Since the electrolyte contains no impurities, the electrolyte return flow rate can be adjusted according to the requirements for electrode surface decontamination to prevent excessive amounts of impurities from being carried back to electrolytic cell 1 for mixing.

[0057] In some embodiments, the wastewater hydrogen production method of this disclosure further includes the following steps:

[0058] Part of the electrolyte in the desorption unit 3 is passed into the recovery unit 41, and an additive is introduced into the recovery unit 41 so that the electrolyte in the recovery unit 41 reacts with the additive to form a recyclable byproduct.

[0059] In some embodiments, the wastewater hydrogen production method of this disclosure further includes the following steps:

[0060] The electrolyte that has reacted with the additive in the recovery unit 41 is passed into the conditioning unit 5 to adjust the pH value of the electrolyte, and then the conditioned electrolyte is passed into the electrolytic cell 1.

[0061] In some embodiments, the organic matter content W in the electrolyte of the electrolytic cell 1 is detected by a first detection device, the power generation P of the electrolytic cell 1 connected to the power source is detected by a second detection device, the flow rate of the electrolyte introduced into the desorption unit 3 is Q, and the flow rate of the carrier gas introduced into the desorption unit 3 is G. When the organic matter content W in the electrolyte is a fixed value, the flow rate G of the carrier gas is directly proportional to the power generation P.

[0062] Understandably, fluctuations in the purity of hydrogen produced during wastewater hydrogen production will lead to fluctuations in the organic matter content of the circulating wastewater. Increased organic matter content can easily cause scaling on the electrode surface, thus affecting the electrolysis reaction. In addition, increased power supply will also lead to more impurities generated during electrolysis, thereby affecting the desorption effect of desorption unit 3.

[0063] Therefore, as shown in Figure 1, a reaction relationship diagram is established based on the power generation P and the organic matter content W in the electrolyte. That is, the figure is divided into 9 variation regions, S1-S9, according to the fluctuation range of the power generation P and the organic matter content W in the electrolyte.

[0064] When the organic matter content W in the electrolyte is a fixed value, taking regions S4, S5, and S6 as examples, the flow rate Q of the electrolyte introduced into the desorption unit 3 is at a medium level. Therefore, the G / Q ratio in region S4 is at a low level, the G / Q ratio in region S5 is at a medium level, and the G / Q ratio in region S6 is at a high level. In other words, when the organic matter content W in the electrolyte is a fixed value, the flow rate G of the carrier gas increases with the increase of the power generation P.

[0065] Optionally, the range of Q for medium levels is: Q = 20 to 40 L / h, and the range of G / Q for medium levels is as follows: 50-80 (standard conditions).

[0066] In some embodiments, the wastewater hydrogen production method of this disclosure further includes the following steps:

[0067] When the power generation P is a fixed value, the flow rate Q of the electrolyte and the flow rate G of the carrier gas are both directly proportional to the organic matter content W.

[0068] As can be understood, as shown in Figure 1, when the power generation P is a fixed value, taking regions S2, S5, and S8 as examples, the gas-liquid flow ratio G / Q is at a medium level. Therefore, the electrolyte flow rate Q in region S2 is at a low level, the electrolyte flow rate Q in region S5 is at a medium level, and the electrolyte flow rate Q in region S8 is at a high level. In other words, when the power generation P is a fixed value, the electrolyte flow rate Q increases with the increase of the organic matter content W.

[0069] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this disclosure.

[0070] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this disclosure, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0071] In this disclosure, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between components; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this disclosure according to the specific circumstances.

[0072] In this disclosure, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0073] In this disclosure, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0074] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present disclosure. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of this disclosure.

Claims

1. A wastewater hydrogen production reactor, comprising: An electrolytic cell having an electrolyte inlet and an electrolyte outlet, wherein the electrolyte inlet is used to introduce electrolyte; A gas-liquid separation assembly includes a gas-liquid separation unit having a separation inlet and a separation outlet. The separation inlet is connected to the electrolyte outlet to receive the electrolyte discharged from the electrolyte outlet and perform gas-liquid separation. The desorption unit has a liquid inlet and a liquid outlet. The liquid inlet is connected to the separation outlet to receive the electrolyte separated by the gas-liquid separation unit. The desorption unit also has a carrier gas inlet and a carrier gas outlet. The carrier gas inlet is used to introduce carrier gas so that the introduced carrier gas can remove residual gas in the electrolyte in the desorption unit. The liquid outlet is connected to the electrolyte inlet so that the electrolyte can be introduced into the electrolytic cell. A first control valve and a second control valve, wherein the first control valve is connected to the separation outlet to control the discharge flow rate of the separation outlet, and the second control valve is connected to the carrier gas inlet to control the intake flow rate of the carrier gas inlet.

2. The wastewater hydrogen production reactor according to claim 1, wherein, It also includes a detection component, which includes a first detection element and a second detection element. The first detection element is used to detect the organic matter content in the electrolyte in the electrolytic cell, and the second detection element is used to detect the power generation of the electrolytic cell connected to the power source. The detection component is electrically connected to both the first control valve and the second control valve so as to control the opening and closing degree of the first control valve and the second control valve according to the detected organic matter content and power generation information.

3. The wastewater hydrogen production reactor according to claim 2, wherein, The gas-liquid separation assembly further includes a gas storage unit, which has a gas storage inlet and an exhaust port. The gas storage inlet is connected to the exhaust port to receive the gas discharged by the gas-liquid separation unit.

4. The wastewater hydrogen production reactor according to claim 3, wherein, It also includes a recycling component, which includes a recycling unit, which includes a recycling inlet, a recycling outlet, and an additive inlet. The desorption unit also has a recycled liquid outlet connected to the recycling inlet so that the recycled liquid discharged from the desorption unit can be introduced into the recycling unit. The additive inlet is used to introduce an additive into the recycling unit so that the additive reacts with the recycled liquid in the recycling unit to form a recyclable byproduct.

5. The wastewater hydrogen production reactor according to claim 4, wherein, The recovery assembly also includes a conditioning unit, which has a conditioning inlet and a conditioning outlet. The conditioning inlet is connected to the recovery outlet, and the conditioning outlet is connected to the electrolyte inlet, so that the liquid from the recovery unit is introduced into the conditioning unit. The conditioning unit is used to adjust the pH value of the liquid in the conditioning unit and introduce the conditioned liquid into the electrolytic cell.

6. A method for producing hydrogen from wastewater, wherein the method is performed using the wastewater hydrogen production reactor according to any one of claims 1-5, comprising the following steps: Wastewater is used as the electrolyte and passed into the electrolytic cell for electrolysis. The electrolyte after electrolysis is separated into gas and liquid by a gas-liquid separation component, and the separated electrolyte is fed into a desorption unit. The flow rate of the electrolyte fed into the desorption unit is controlled by the opening and closing degree of the first control valve. The flow rate of carrier gas introduced into the desorption unit is controlled by the opening and closing degree of the second control valve, so that the carrier gas carries away the impurity gas remaining in the electrolyte. The electrolyte, after removing impurity gases, is passed into the electrolytic cell so that the electrolyte can be recycled and reused.

7. The wastewater hydrogen production method according to claim 6, wherein, It also includes the following steps: A portion of the electrolyte in the desorption unit is passed into the recovery unit, and an additive is introduced into the recovery unit so that the electrolyte in the recovery unit reacts with the additive to form a recyclable byproduct.

8. The wastewater hydrogen production method according to claim 7, wherein, It also includes the following steps: The electrolyte that has reacted with the additives in the recovery unit is passed into the conditioning unit to adjust the pH value of the electrolyte, and then the conditioned electrolyte is passed into the electrolytic cell.

9. The wastewater hydrogen production method according to claim 8, wherein, The first detection device is used to detect the organic matter content W in the electrolyte of the electrolytic cell, and the second detection device is used to detect the power generation P of the electrolytic cell connected to the power source. The flow rate of the electrolyte entering the desorption unit is Q, and the flow rate of the carrier gas entering the desorption unit is G. When the organic matter content W in the electrolyte is a fixed value, the flow rate G of the carrier gas is directly proportional to the power generation P.

10. The wastewater hydrogen production method according to claim 9, wherein, It also includes the following steps: When the power generation P is a fixed value, the flow rate Q of the electrolyte and the flow rate G of the carrier gas are both directly proportional to the organic matter content W.

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