An electrochemical reaction device, an electrochemical reaction system and an electrolysis method

Abstract

This invention provides an electrochemical reaction device, an electrochemical reaction system, and an electrolysis method. The electrochemical reaction device includes: a shell, an inlet at one end of the shell, and an outlet at the other end of the shell; a plurality of anode plates and / or cathode plates are arranged parallel to each other at intervals within the shell, the anode plates and / or cathode plates being staggered along the water flow direction, and a plurality of spiral flow deflectors are sequentially arranged between adjacent anode plates and / or cathode plates along the water flow direction, and the spiral flow deflectors are rotatably arranged on both sides of the shell; a water pump is connected to the inlet, and a spiral reaction mixer is connected to the outlet; this invention can effectively improve degradation efficiency.

Description

Technical Field

[0001] This invention relates to the field of electrolysis technology, and in particular to a spiral high-efficiency electrochemical reaction device, an electrochemical reaction system, and an electrolysis method. Background Technology

[0002] Boron-doped diamond (BDD) electrodes are made by depositing boron-doped diamond films on a substrate using vapor deposition. When energized, they generate ozone and hydroxyl radicals through water electrolysis, which can oxidize viruses, bacteria, organic pollutants, etc.

[0003] Currently, almost all commercially available BDD electrolysis modules have a flat plate structure, with the water flow direction parallel to the electrode plates. The water entering the module is almost entirely laminar, with minimal disturbance. Furthermore, the water flow and mass transfer direction are perpendicular, severely impacting mass transfer. Most wastewater degradation occurs through indirect oxidation, with very little direct oxidation. Therefore, such electrolysis modules have low current efficiency. Traditionally, to increase degradation efficiency, gas is introduced into the electrolysis module for agitation. However, this not only increases costs but also yields minimal results, making it poor value for money.

[0004] Therefore, there is an urgent need for an electrochemical reaction device, an electrochemical reaction system, and an electrolysis method that can effectively improve degradation efficiency. Summary of the Invention

[0005] The purpose of this invention is to provide an electrochemical reaction device, an electrochemical reaction system, and an electrolysis method, aiming to solve the technical problem of low degradation efficiency in traditional electrolysis modules.

[0006] To achieve the above objectives, in a first aspect, the present invention provides an electrochemical reaction apparatus, comprising:

[0007] The housing, an inlet located at one end of the housing, and an outlet located at the other end of the housing;

[0008] The housing contains a plurality of anode plates and / or cathode plates arranged in parallel at intervals. The anode plates and / or cathode plates are staggered along the water flow direction. Between adjacent anode plates and / or cathode plates, a plurality of spiral flow deflectors are arranged sequentially along the water flow direction. The spiral flow deflectors are rotatably arranged on both sides of the housing.

[0009] When the plurality of spiral flow deflectors are used as anode plates or cathode plates, the plurality of spiral flow deflectors are electrically connected in series with each other;

[0010] The inlet is connected to a water pump, and the outlet is connected to a spiral reaction mixer.

[0011] As a further improvement to the above solution, the spiral spoiler includes a spoiler shaft and spoiler spiral blades disposed on the spoiler shaft, and the spoiler shaft is rotatably connected to the housing.

[0012] As a further improvement to the above scheme, the turbulence-inducing spiral blades can cover the width direction of the corresponding anode plate or cathode plate.

[0013] As a further improvement to the above scheme, the spiral reaction mixer includes a mixer body and an S-shaped flow channel disposed within the mixer body, wherein a spiral mixing element for uniform mixing is disposed within the straight section of the S-shaped flow channel.

[0014] As a further improvement to the above solution, the mixer body includes an upper cover and a lower cover that is sealed and fastened to the upper cover. The inner wall of the upper cover is provided with an S-shaped upper groove, and the inner wall of the lower cover is provided with an S-shaped lower groove that matches the S-shaped upper groove.

[0015] When the upper cover and the lower cover are fastened together, the upper groove and the lower groove of the S-shaped flow channel constitute the S-shaped flow channel.

[0016] As a further improvement to the above solution, the spiral mixing component includes a mixing shaft and mixing spiral blades disposed on the mixing shaft.

[0017] As a further improvement to the above solution, the spiral reaction mixer also includes a fastening assembly and a sealing assembly, the sealing assembly being disposed between the upper cover and the lower cover, and the fastening assembly being used to press the upper cover and the lower cover together as a single unit.

[0018] As a further improvement to the above scheme, the electrochemical reaction device also includes a power source, and the anode plate and the cathode plate are electrically connected to the power source respectively.

[0019] As a further improvement to the above scheme, both the anode plate and the cathode plate adopt BDD electrodes.

[0020] Secondly, the present invention also provides an electrochemical reaction system, including the electrochemical reaction device provided in the first aspect, and further including a water inlet device, wherein the water inlet device is connected to a water inlet at one end of the housing, and the water inlet device includes the water pump and the filter device.

[0021] Thirdly, the present invention also provides an electrolysis method for the above-mentioned electrochemical reaction device, the steps of which include:

[0022] S1: Start the water pump and energize the anode plate and / or cathode plate; when several spiral baffles are used as anode plates or cathode plates, energize the several spiral baffles; the water pump delivers water to the inner cavity of the housing;

[0023] S2: The water flow drives a plurality of spiral turbulence devices disposed between the anode plate and / or the cathode plate to rotate. The spiral turbulence devices cause the water flow to be disturbed and throw the disturbed water flow onto the corresponding anode plate and / or the corresponding cathode plate for direct oxidation electrolysis.

[0024] S3: The water after oxidation and electrolysis enters the spiral reactor through the outlet at the other end of the shell for thorough mixing.

[0025] As a further improvement to the above scheme, in step S3, when the water after oxidation and electrolysis enters the S-shaped flow channel of the spiral reaction mixer, the water flow pushes the spiral mixer set in the S-shaped flow channel to make its reaction more complete.

[0026] Because the present invention adopts the above technical solutions, the beneficial effects of this application are as follows:

[0027] 1. This invention provides an electrochemical reaction device, comprising: a shell, an inlet at one end of the shell, and an outlet at the other end of the shell; a plurality of anode plates and / or cathode plates are arranged parallel to each other at intervals within the shell, the anode plates and / or cathode plates being staggered along the water flow direction, and a plurality of spiral flow deflectors are sequentially arranged between adjacent anode plates and / or cathode plates along the water flow direction, and the spiral flow deflectors are rotatably arranged on both sides of the shell; when the plurality of spiral flow deflectors serve as anode plates or cathode plates, the plurality of spiral flow deflectors are electrically connected in series with each other; a water pump is connected to the inlet, and a spiral reaction mixer is connected to the outlet; in some preferred embodiments of this invention, the spiral flow deflectors arranged between the anode and cathode plates can disturb the water flow between the anode and cathode, and the spiral flow deflectors are arranged along the water flow direction, which increases the mass transfer rate between the anode and cathode and allows the water to be disturbed and thrown onto the corresponding electrode plates for direct oxidation, thereby improving the wastewater degradation efficiency;

[0028] In some embodiments, several of the spiral flow deflectors are electrically connected in series to serve as anode plates or cathode plates. This increases the mass transfer rate between the anode and cathode, improves the wastewater degradation efficiency, and further reduces costs, saving traditional anode plates or cathode plates.

[0029] Furthermore, although the present invention adds a spiral baffle, which increases the cost to some extent, the spiral baffle is manufactured using a mature and inexpensive process and will not increase the cost of the electrochemical reaction device. On the contrary, since setting up a spiral baffle can improve the degradation efficiency of the same wastewater under the same conditions, the electrode area can be reduced, thereby reducing the number of anode and cathode plates in the housing, which indirectly reduces the cost of the electrochemical reaction device. Compared with the traditional method of introducing gas into the electrolysis module for stirring, the present invention does not increase the cost of the electrochemical reaction device while ensuring the electrolysis effect.

[0030] Meanwhile, the spiral turbulence deflector does not require additional power to drive the device to rotate. It can rotate automatically under the action of water flow and will not increase additional costs.

[0031] Furthermore, the present invention also provides a spiral reaction mixer at the water outlet at the other end of the shell to ensure that the effective substances with strong oxidizing properties from the electrolysis module can be better and more efficiently mixed with the water during the water discharge process and continue to react, thereby reducing the concentration of harmful substances in the water and improving the overall degradation effect and degradation efficiency of the electrochemical reaction system using this electrochemical reaction device.

[0032] 2. The present invention also provides an electrolysis method for the above-mentioned electrochemical reaction device, wherein the water pump is first started and the anode plate and / or cathode plate are energized. When a plurality of spiral baffles are used as anode plates or cathode plates, the plurality of spiral baffles are energized and the water pump delivers water to the inner cavity of the housing.

[0033] The water flow drives a plurality of spiral flow deflectors disposed between the anode plate and / or the cathode plate to rotate. The spiral flow deflectors agitate the water flow and throw the agitated water onto the corresponding anode plate and / or the corresponding cathode plate for direct oxidation electrolysis. The water after oxidation electrolysis enters the spiral reaction mixer through the outlet at the other end of the shell for thorough mixing. The electrolysis method provided by this invention is simple to operate and has high degradation efficiency. Specifically, it is only necessary to start the water pump and make the anode plate and the cathode plate energized. The water flow will automatically drive the spiral flow deflectors to rotate and agitate the water flow so that the agitated water is thrown onto the corresponding anode plate and / or the corresponding cathode plate for direct oxidation electrolysis. This allows the water flow to fully contact the corresponding anode plate and / or the corresponding cathode plate for electrolysis, thereby improving the degradation efficiency. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0035] Figure 1 This is a schematic diagram of the structure and principle of an electrochemical reaction device disclosed in Embodiment 1 of the present invention;

[0036] Figure 2 This is a schematic diagram showing a plurality of spiral flow deflectors arranged sequentially in the direction of water flow, as disclosed in this invention.

[0037] Figure 3 This is a perspective structural diagram of the spiral reaction mixer disclosed in this invention;

[0038] Figure 4 for Figure 3 AA sectional view;

[0039] Figure 5 This is a front view schematic diagram of the spiral hybrid component;

[0040] Figure 6 A bar chart showing the comparison of ozone concentration between a control example without a spiral baffle and this embodiment with a spiral baffle.

[0041] Figure 7 This is a schematic diagram of the structure and principle of an electrochemical reaction device disclosed in Embodiment 2 of the present invention.

[0042] Figure label:

[0043] 1. Shell; 11. Inlet; 12. Outlet;

[0044] 2. BDD anode plate; 3. BDD cathode plate; 4. Spiral spoiler; 41. Spoiler shaft; 42. Spoiler spiral blades;

[0045] 5. Spiral reactor mixer; 51. Mixer body; 511. Top cover; 512. Bottom cover; 52. S-shaped flow channel; 53. Spiral mixing component; 531. Mixing shaft; 532. Mixing spiral blades; 54. Fastening assembly; 6. Power supply.

[0046] The realization of the objective, functional characteristics and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0047] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0048] It should be noted that all directional indicators (such as up, down, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0049] Furthermore, in this invention, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature.

[0050] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0051] Example 1:

[0052] See Figures 1-5 The present invention provides an electrochemical reaction apparatus, comprising:

[0053] The housing 1, the inlet 11 located at one end of the housing 1, and the outlet 12 located at the other end of the housing 1;

[0054] The housing 1 is provided with a plurality of anode plates and a plurality of cathode plates arranged in parallel at intervals. In this embodiment, both the anode plates and the cathode plates are BDD electrodes. The following description will focus on the BDD anode plate 2 and the BDD cathode plate 3 respectively. The BDD anode plate 2 and the BDD cathode plate 3 are arranged alternately along the water flow direction. Between adjacent BDD anode plates 2 and BDD cathode plates 3, a plurality of spiral flow deflectors 4 are arranged sequentially along the water flow direction. The spiral flow deflectors 4 are rotatably arranged on both sides of the housing 1.

[0055] The electrochemical reaction device also includes a power supply 6, and the anode plate and the cathode plate are electrically connected to the power supply 6 respectively, for supplying power to the BDD anode plate 2 and the BDD cathode plate 3;

[0056] In this embodiment, the housing 1 contains two BDD anode plates 2 and three BDD cathode plates 3. The three BDD cathode plates 3 and the two BDD anode plates 2 are arranged alternately, parallel to each other. For ease of explanation, please refer to [link to documentation]. Figure 1 From left to right, the structure consists of a first BDD cathode plate 3, a first BDD anode plate 2, a second BDD cathode plate 3, a second BDD anode plate 2, and a third BDD cathode plate 3. A set of spiral flow deflectors 4 is arranged between the first BDD cathode plate 3 and the first BDD anode plate 2, between the first BDD anode plate 2 and the second BDD cathode plate 3, between the second BDD cathode plate 3 and the second BDD anode plate 2, and between the second BDD anode plate 2 and the third BDD cathode plate 3. Each set of spiral flow deflectors 4 includes several spiral flow deflectors 4, and each spiral flow deflector 4 includes a flow deflecting shaft 41 and a flow deflecting spiral blade 42 arranged on the flow deflecting shaft 41. The flow deflecting shaft 41 is rotatably connected to the housing 1.

[0057] The inlet 11 is connected to a water pump (not shown in the figure), and the outlet 12 is connected to a spiral reaction mixer 5. The water pump provides the flow power for the water to enter the inner cavity of the housing 1 from the inlet 11 at one end of the housing 1 for electrolysis reaction, and then flow out through the outlet 12 at the other end of the housing 1. During this process, the water flow can drive the spiral flow deflector 4 set between the BDD anode plate 2 and the BDD cathode plate 3 to rotate, thereby causing the water flow to be disturbed and the disturbed water flow can be thrown onto the corresponding BDD anode plate 2 and / or BDD cathode plate 3.

[0058] The present invention provides a spiral flow deflector 4 between the anode and cathode plates, which can disturb the water flow between the anode and cathode plates. At the same time, the spiral flow deflector 4 is set along the water flow direction, which not only increases the mass transfer rate between the anode and cathode plates, but also allows the water to be disturbed and thrown onto the corresponding electrode plates for direct oxidation, thereby improving the wastewater degradation efficiency.

[0059] Furthermore, although the present invention adds a spiral baffle 4, which increases the cost to a certain extent, the spiral baffle 4 is manufactured using a mature and inexpensive process and will not increase the cost of the electrochemical reaction device. On the contrary, since the spiral baffle 4 can degrade the same wastewater under the same conditions, the degradation efficiency can be improved, thus reducing the electrode area. This reduces the number of anode and cathode plates in the housing 1, indirectly reducing the cost of the electrochemical reaction device. Compared with the traditional method of introducing gas into the electrolysis module for stirring, the present invention does not increase the cost of the electrochemical reaction device while ensuring the electrolysis effect.

[0060] Meanwhile, the spiral turbulence deflector 4 does not require additional power to drive the device to rotate. It can rotate automatically under the action of water flow and will not increase additional costs.

[0061] Furthermore, the present invention also provides a spiral reaction mixer 5 at the water outlet 12 at the other end of the shell 1 to ensure that the effective substances with strong oxidizing properties from the electrolysis module can be better and more efficiently mixed with the water during the water discharge process and continue to react, thereby reducing the concentration of harmful substances in the water and improving the overall degradation effect and degradation efficiency of the electrochemical reaction system using this electrochemical reaction device.

[0062] In a preferred embodiment, the turbulence-inducing spiral blades 42 can cover the width direction of the corresponding BDD anode plate 2 or BDD cathode plate 3. In this embodiment, seven spiral turbulence-inducing devices 4 are arranged between adjacent BDD anode plates 2 and BDD cathode plates 3. The seven spiral turbulence-inducing devices 4 are equidistantly arranged along the length direction of the corresponding BDD anode plate 2 or BDD cathode plate 3, so that the turbulence-inducing spiral blades 42 can fully and evenly throw the turbulent water flow onto the corresponding BDD anode plate 2 or BDD cathode plate 3, thereby improving the degradation efficiency.

[0063] To further illustrate that the electrochemical reaction device provided by this invention can effectively improve degradation efficiency, performance tests were conducted comparing the devices with and without the spiral flow deflector 4; specifically,

[0064] I. Experimental Preparation

[0065] Experimental equipment: tubing, ozone analyzer (Guangdong Huankai Biotechnology Co., Ltd.), 5mL colorimetric bottle, reverse polarity power supply 6, peristaltic pump;

[0066] Experimental reagent: Ozone detection reagent (Guangdong Huankai Biotechnology Co., Ltd.);

[0067] Experimental conditions: pure water (flow rate 500 mL / min, constant flow 0.8 A)

[0068] Experimental subject: Dual BDD-MD7.8 module

[0069] Table 1 Comparison of the electrolysis module composition of the two simplified electrochemical reaction devices

[0070]

[0071] It should be noted that the purpose of this experiment is to verify the effect of setting the spiral turbulence diffuser 4 on the degradation efficiency. Therefore, the electrochemical reaction device was simplified, and only two BDD electrode plates were selected for experimental comparison.

[0072] II. Experimental Procedure

[0073] In the comparative example (corresponding to serial number 1 in Table 1), two BDD electrode plates were assembled into an ozone electrolysis module and connected to the reverse electrode power supply 6 and a flexible tube to make it work. The reverse electrode frequency was set to 1 min / time.

[0074] In the embodiment (corresponding to serial number 2 in Table 1), two BDD electrode plates and a spiral deflector 4 are assembled into an ozone electrolysis module and connected to a reverse electrode power supply 6 and a hose to make it work, with the spiral deflector 4 positioned between the two electrode plates, and the reverse electrode frequency also set to 1 min / time.

[0075] The pure water flow rate of the comparative example and the embodiment was adjusted to 500 mL / min, the current was adjusted to a constant current of 0.8 A, and the samples were taken after the power was turned on and the system was running stably for 2 minutes.

[0076] Place ozone concentration detection reagent into a 5mL colorimetric bottle, collect ozone water generated by the ozone electrolysis module at the water outlet of shell 1, and put it into the ozone analyzer to detect its concentration.

[0077] Record the voltage change during sampling.

[0078] III. Experimental Data

[0079] Table 2 compares the voltage and ozone concentration of the comparative and example samples at the same degradation time.

[0080]

[0081] IV. Results Analysis

[0082] See Table 2 and Figure 6 The ozone production capacity of this embodiment, equipped with the spiral baffle 4, is significantly higher than that of the comparative example without the spiral baffle 4. Comparing the initial ozone concentrations of the two, the initial ozone concentration of this embodiment is 1.62 times that of the comparative example; after 1 hour, the ozone concentration of this embodiment is 1.59 times that of the comparative example; and after 2 hours, the ozone concentration of this embodiment is 1.21 times that of the comparative example. It is evident that the ozone concentration produced by this embodiment is significantly higher than that of the traditional comparative example without the spiral baffle 4. The electrochemical reaction device provided by this invention can improve the degradation efficiency.

[0083] As a preferred embodiment, see Figures 3-5The spiral reactor mixer 5 includes a mixer body 51 and an S-shaped flow channel 52 disposed within the mixer body 51. A spiral mixing element 53 for uniform mixing is disposed in the straight section of the S-shaped flow channel 52. Specifically, the spiral mixing element 53 includes a mixing shaft 531 and mixing spiral blades 532 disposed on the mixing shaft 531. This arrangement allows the highly oxidizing effective substances electrolyzed by the BDD anode plate 2 or BDD cathode plate 3 to be fully mixed with the effluent in the S-shaped flow channel 52. Under the action of the spiral mixing element 53, the mixture can be further mixed better and more efficiently, and the reaction can continue, thereby reducing the concentration of harmful substances in the water and improving the overall degradation effect and degradation efficiency of this electrochemical reactor.

[0084] As a preferred embodiment, see Figure 3 and Figure 4 The mixer body 51 includes an upper cover 511 and a lower cover 512 that is sealed and fastened to the upper cover 511. The inner wall of the upper cover 511 is provided with an upper groove of an S-shaped flow channel 52, and the inner wall of the lower cover 512 is provided with a lower groove of an S-shaped flow channel 52 that matches the upper groove of the S-shaped flow channel 52.

[0085] When the upper cover 511 and the lower cover 512 are fastened together, the upper groove and the lower groove of the S-shaped flow channel 52 constitute the S-shaped flow channel 52. In this invention, the S-shaped flow channel 52 is constructed by setting the upper groove of the S-shaped flow channel 52 on the upper cover 511 and the lower groove of the S-shaped flow channel 52 on the lower cover 512. This makes the spiral reaction mixer 5 provided by this invention compact and easy to connect and integrate with the outlet at the other end of the shell 1. In addition, this arrangement also facilitates the processing and construction of the S-shaped flow channel 52, and also facilitates the setting of spiral turbulence-inducing elements in the straight section of the S-shaped flow channel 52, so that the electrolyzed effective substances with strong oxidizing properties can be fully mixed with the effluent in the S-shaped flow channel 52.

[0086] As a preferred embodiment, see Figure 3 and Figure 4 The spiral reaction mixer 5 also includes a fastening assembly 54 and a sealing assembly. The sealing assembly is disposed between the upper cover 511 and the lower cover 512. Specifically, a sealing ring is provided between the upper cover 511 and the lower cover 512 to ensure a sealed connection between the two.

[0087] The fastening assembly 54 includes a plurality of screws and corresponding washers, which are evenly arranged along the circumference of the upper cover 511 and are used to press the upper cover 511 and the lower cover 512 together.

[0088] The spiral reactor 5 is also equipped with an inlet pipe and an outlet pipe, which are respectively connected to the two ends of the S-shaped flow channel 52, so as to facilitate connection with the corresponding equipment.

[0089] Example 2:

[0090] See Figure 7 The present invention provides an electrochemical reaction apparatus, comprising:

[0091] The housing 1, the inlet 11 located at one end of the housing 1, and the outlet 12 located at the other end of the housing 1;

[0092] The housing 1 has a plurality of anode plates or a plurality of cathode plates arranged in parallel at intervals. In this embodiment, a plurality of anode plates are provided, and the anode plates are BDD electrodes. The following description uses BDD anode plate 2.

[0093] Several spiral flow deflectors 4 are arranged sequentially between adjacent BDD anode plates 2 along the water flow direction, and the spiral flow deflectors 4 are rotatably arranged on both sides of the housing 1.

[0094] A plurality of spiral flow deflectors disposed between adjacent BDD anode plates 2 are electrically connected in series to form a cathode plate in this embodiment. The cathode plate cooperates with the BDD anode plate 2 to perform electrolysis. The BDD anode plate 2 and the cathode plate are both staggered along the water flow direction.

[0095] The electrochemical reaction device also includes a power supply 6. The anode plate and the cathode plate are electrically connected to the power supply 6 respectively, and are used to supply power to the BDD anode plate 2 and the cathode plate composed of a plurality of spiral baffles 4.

[0096] In this embodiment, the housing 1 is provided with 3 BDD anode plates 2 and 4 cathode plates. The 3 BDD anode plates 2 and 4 cathode plates are arranged alternately, parallel to each other. For ease of explanation, see [link to documentation]. Figure 1 From left to right, they are: first cathode plate, first BDD anode plate 2, second cathode plate, second BDD anode plate 2, third cathode plate, third BDD anode plate 2, and fourth cathode plate.

[0097] The first cathode plate, the second cathode plate, the third cathode plate, and the fourth cathode plate are each composed of a set of spiral baffles 4; each set of spiral baffles 4 includes several spiral baffles 4 connected in series in sequence, and each spiral baffle 4 includes a baffle shaft 41 and a baffle spiral blade 42 disposed on the baffle shaft 41. The baffle shaft 41 is rotatably connected to the housing 1; and the material of the spiral baffles is preferably a corrosion-resistant material such as titanium or stainless steel.

[0098] The inlet 11 is connected to a water pump (not shown in the figure), and the outlet 12 is connected to a spiral reaction mixer 5. The water pump provides the flow power for the water to enter the inner cavity of the shell 1 from the inlet 11 at one end of the shell 1 for electrolysis, and then flow out through the outlet 12 at the other end of the shell 1. During this process, the water flow can drive the spiral baffle 4 to rotate, thereby causing the water flow to be disturbed and the disturbed water flow can be thrown onto the corresponding BDD anode plate 2. This increases the mass transfer rate between the anode and cathode and allows the water to be disturbed and thrown onto the corresponding electrode plate for direct oxidation, thereby improving the wastewater degradation efficiency. At the same time, using a set of spiral baffles 4 as electrode plates to directly participate in electrolysis can further reduce costs while increasing the mass transfer rate between the anode and cathode and improving the wastewater degradation efficiency. This can save traditional anode plates or cathode plates.

[0099] Meanwhile, the spiral turbulence deflector 4 does not require additional power to drive the device to rotate. It can rotate automatically under the action of water flow and will not increase additional costs.

[0100] Furthermore, the present invention also provides a spiral reaction mixer 5 at the water outlet 12 at the other end of the shell 1 to ensure that the effective substances with strong oxidizing properties from the electrolysis module can be better and more efficiently mixed with the water during the water discharge process and continue to react, thereby reducing the concentration of harmful substances in the water and improving the overall degradation effect and degradation efficiency of the electrochemical reaction system using this electrochemical reaction device.

[0101] The remaining settings are the same as in Example 1, and will not be repeated here.

[0102] Example 3:

[0103] The present invention also provides an electrochemical reaction system, including the electrochemical reaction device provided in Example 1, and further including a water inlet device. The water inlet device is connected to a water inlet 11 at one end of the housing 1, and the water inlet device includes a water pump and a filter device. The water pump provides power for the flow of water so that water can flow in the housing 1 and the spiral reaction mixer 5 so that degradation can continue to circulate. The filter device is provided to prevent impurities from entering the inner cavity of the housing 1 and affecting the degradation effect.

[0104] Example 4:

[0105] The present invention also provides an electrolysis method for the electrochemical reaction apparatus described in Example 1, the steps of which include:

[0106] S1: Start the water pump and energize the BDD anode plate 2 and / or the BDD cathode plate 3. When the spiral baffles 4 are used as anode plates or cathode plates, energize the spiral baffles 4 and pump the water into the inner cavity of the housing 1.

[0107] S2: The water flow drives a plurality of spiral flow deflectors 4 disposed between the BDD anode plate 2 and / or the BDD cathode plate 3 to rotate. The spiral flow deflectors 4 cause the water flow to be disturbed and throw the disturbed water flow onto the corresponding BDD anode plate 2 and / or the corresponding BDD cathode plate 3 for direct oxidation electrolysis.

[0108] S3: The water after oxidation and electrolysis enters the spiral reaction mixer 5 through the outlet 12 at the other end of the shell 1 for thorough mixing; when the water after oxidation and electrolysis enters the S-shaped flow channel 52 of the spiral reaction mixer 5, the water flow pushes the spiral mixing component 53 set in the S-shaped flow channel 52 to make the reaction more complete.

[0109] The electrolysis method provided by this invention is simple to operate and has high degradation efficiency. Specifically, it only requires starting the water pump and energizing the BDD anode plate 2 and the BDD cathode plate 3. The water flow will automatically drive the spiral baffle 4 to rotate and agitate the water flow so that the agitated water flow is thrown onto the corresponding BDD anode plate 2 and / or the corresponding BDD cathode plate 3 for direct oxidation electrolysis. This allows the water flow to fully contact the corresponding BDD anode plate 2 and / or the corresponding BDD cathode plate 3 for electrolysis, thereby improving the degradation efficiency.

[0110] The above are merely preferred embodiments of the present invention and do not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. An electrochemical reaction device, characterized in that, include: The housing, an inlet located at one end of the housing, and an outlet located at the other end of the housing; The housing contains a plurality of anode plates and / or cathode plates arranged parallel to each other at intervals. The anode plates and / or cathode plates are staggered along the water flow direction. Between adjacent anode plates and / or cathode plates, a plurality of spiral flow deflectors are arranged sequentially along the water flow direction. The spiral flow deflectors are rotatably mounted on both sides of the housing. Each spiral flow deflector includes a flow deflecting shaft and flow deflecting spiral blades mounted on the flow deflecting shaft. The flow deflecting shaft is rotatably connected to the housing. When the plurality of spiral flow deflectors are used as anode plates or cathode plates, the plurality of spiral flow deflectors are electrically connected in series with each other; The inlet is connected to a water pump, and the outlet is connected to a spiral reaction mixer. The spiral reaction mixer includes a mixer body and an S-shaped flow channel disposed within the mixer body. A spiral mixing element for uniform mixing is disposed within the straight section of the S-shaped flow channel.

2. The electrochemical reaction device according to claim 1, characterized in that, The mixer body includes an upper cover and a lower cover that is sealed and fastened to the upper cover. The inner wall of the upper cover is provided with an S-shaped upper groove, and the inner wall of the lower cover is provided with an S-shaped lower groove that matches the S-shaped upper groove. When the upper cover and the lower cover are fastened together, the upper groove and the lower groove of the S-shaped flow channel constitute the S-shaped flow channel.

3. An electrochemical reaction apparatus according to claim 1 or 2, characterized in that, The spiral mixing component includes a mixing shaft and mixing spiral blades disposed on the mixing shaft.

4. The electrochemical reaction device according to claim 2, characterized in that, The spiral reaction mixer also includes a fastening assembly and a sealing assembly. The sealing assembly is disposed between the upper cover and the lower cover, and the fastening assembly is used to press the upper cover and the lower cover together as a single unit.

5. An electrochemical reaction apparatus according to claim 1 or 2, characterized in that, The electrochemical reaction device also includes a power source, and the anode plate and the cathode plate are electrically connected to the power source, respectively.

6. An electrochemical reaction system, characterized in that, The device includes the electrochemical reaction apparatus as described in any one of claims 1-5, and further includes a water inlet device, which is connected to a water inlet at one end of the housing, and the water inlet device includes the water pump and the filter device.

7. An electrolysis method, characterized in that, The electrochemical reaction apparatus according to any one of claims 1-5 comprises the following steps: S1: Start the water pump and energize the anode plate and / or cathode plate. When several spiral baffles are used as anode plates or cathode plates, energize the several spiral baffles and pump the water into the inner cavity of the housing. S2: The water flow drives a plurality of spiral turbulence devices disposed between the anode plate and / or the cathode plate to rotate. The spiral turbulence devices cause the water flow to be disturbed and throw the disturbed water flow onto the corresponding anode plate and / or the corresponding cathode plate for direct oxidation electrolysis. S3: The water after oxidation and electrolysis enters the spiral reactor through the outlet at the other end of the shell for thorough mixing.

8. The electrolysis method according to claim 7, characterized in that, In step S3, when the water after oxidation and electrolysis enters the S-shaped flow channel of the spiral reactor, the water flow pushes the spiral mixer set in the S-shaped flow channel to make the reaction more complete.

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