Electrochemical intermittent reverse electrode composite electric adsorption device

Abstract

The application provides an electrochemical intermittent reverse electrode composite electric adsorption device, which comprises an electrochemical intermittent reverse electrode composite electric adsorption device and a spiral micro-bubble decontamination device in communication with the electrochemical intermittent reverse electrode composite electric adsorption device, wherein the electrochemical intermittent reverse electrode composite electric adsorption device is used for electrolytic descaling, and the spiral micro-bubble decontamination device is used for decontamination after electrolytic reaction. The application can achieve the purposes of descaling, scale inhibition, sterilization and algae removal without any chemical agent, and the operation can be completely automated, thereby avoiding the operation risk and high labor intensity caused by chemical dosing. Meanwhile, since no chemical agent is consumed, the application has lower operation cost and is more environmentally friendly compared with the chemical dosing method, and the pollution of the agent in the circulating cooling water discharge water to the environment can be avoided.

Description

Technical Field

[0001] This invention relates to the field of water treatment technology, and in particular to an electrochemical intermittent reverse electrode composite electroadsorption device. Background Technology

[0002] Indirect cooling open-loop circulating cooling water is a widely used equipment cooling water system in industries such as chemical, power, construction, and cloud computing. Under operating conditions, cooling water experiences evaporation losses, leading to the continuous concentration of dissolved substances such as salt content, alkalinity, calcium and magnesium ions, and colloids within the circulating cooling water system. When the concentration of dissolved substances in the circulating cooling water exceeds their solubility, they precipitate out, resulting in severe scaling in the circulating cooling water system. Scaling forms hard scale on the heat exchange surfaces of the cooling system's heat exchangers, the inner surfaces of cooling water pipes, and the surfaces of cooling tower packing. Scale has a low thermal conductivity, which severely affects the cooling effect of the circulating cooling water system.

[0003] Currently, the main methods for solving scaling in circulating cooling water systems are chemical dosing and electrochemical methods. Chemical dosing methods require manual preparation of chemicals. Furthermore, because circulating cooling water systems experience blowdowns, the scale inhibitors in the wastewater will be discharged outside the system. Therefore, to maintain the scale inhibitor level in the circulating cooling water, the dosing device must operate continuously, constantly replenishing the cooling water with a certain amount of chemicals. Electrochemical descaling devices, on the other hand, cannot automatically and effectively remove scale, resulting in water quality that remains poor even after treatment. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides an electrochemical intermittent reverse electrode composite electroadsorption device that automatically drains scale without the need for chemical addition and has a good treatment effect.

[0005] The technical solution of the present invention is implemented as follows: The present invention provides an electrochemical intermittent reverse electrode composite electroadsorption device, including an electrochemical intermittent reverse electrode composite electroadsorption device and a spiral microbubble descaling device connected thereto. The electrochemical intermittent reverse electrode composite electroadsorption device is used for electrolytic descaling, and the spiral microbubble descaling device is used for wastewater discharge after electrolysis reaction.

[0006] Based on the above technical solutions, the electrochemical intermittent reversing composite electroadsorption device includes a first housing and an electrode pair and a screw conveyor disposed inside the first housing. The first housing is provided with a first water inlet, a first drain outlet and a scale discharge outlet. The electrode pair is connected to a DC power supply via a cable, and the DC power supply intermittently reverses the polarity of the electrode pair. The screw conveyor is located at the bottom of the first housing and below the electrode pair, and the scale discharge outlet is located below the screw conveyor.

[0007] Based on the above technical solutions, the spiral microbubble decontamination device includes a second housing and a drain grid disposed inside the second housing. The second housing is provided with a second water inlet and a second water outlet. The first drain outlet and the second water inlet are connected by a pipe. The top of the second housing is provided with an exhaust valve and the bottom is provided with a drain valve.

[0008] Based on the above technical solutions, the electrode pair includes an anode and a cathode, which are arranged in parallel inside the first housing, and both the anode and the cathode are metal plates.

[0009] Based on the above technical solution, the anode is a titanium substrate coated with precious metals.

[0010] Based on the above technical solutions, the precious metal is one of gold, silver and platinum group metals.

[0011] Based on the above technical solution, a sacrificial anode is provided on the anode, and the material of the sacrificial anode is a copper alloy.

[0012] Based on the above technical solutions, the cathode is a copper-clad stainless steel plate.

[0013] Based on the above technical solutions, a vibration generator is provided on the cathode.

[0014] Based on the above technical solution, the first housing is provided with a drive motor for driving the screw conveyor, and the output end of the drive motor is coaxially connected to the rotating shaft of the screw conveyor.

[0015] Based on the above technical solutions, the system also includes a control cabinet and a power distribution cabinet. The control cabinet is electrically connected to the power distribution cabinet. The control cabinet controls the duration and voltage of the intermittent polarity reversal. The control cabinet transmits direct current to the electrode pair through a cable.

[0016] Based on the above technical solution, a support part is also included, one end of which is connected to the first housing and the second housing, and the opposite end is connected to the installation platform.

[0017] The electrochemical intermittent reverse electrode composite electroadsorption device of the present invention has the following advantages over the prior art:

[0018] (1) The present invention removes the scale attached to the cathode plate by intermittently reversing the electrode; a screw conveyor is configured to collect the automatically removed scale and discharge it, thereby achieving the effect of automatic descaling; the sewage grid further removes dirt and degass the electrochemically treated water, thereby improving the quality of the circulating cooling water.

[0019] (2) The sacrificial anode of the present invention is made of copper alloy. Under startup conditions, the sacrificial anode and the anode are connected and continuously corroded, releasing a large number of copper ions into the circulating cooling water to inhibit the growth of bacteria and algae.

[0020] (3) This invention achieves the purpose of descaling, scale inhibition, sterilization, and algae removal without any chemical agents, and the operation can be fully automated, avoiding the operational risks and high labor intensity associated with chemical dosing. Compared with chemical dosing methods, this invention has lower operating costs and is more environmentally friendly, avoiding pollution of the environment by chemicals in the water. Attached Figure Description

[0021] 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 these drawings without creative effort.

[0022] Figure 1 This is a structural diagram of the electrochemical intermittent reverse electrode composite electroadsorption device of the present invention;

[0023] Figure 2 This is a structural diagram of the electrochemical intermittent reversing electrode composite electroadsorption device of the present invention;

[0024] Figure 3 This is a structural diagram of the spiral microbubble decontamination device of the electrochemical intermittent reverse electrode composite electroadsorption device of the present invention.

[0025] In the figure, 1-Electrochemical intermittent reverse electrode composite electroadsorption device, 2-Spiral microbubble decontamination device, 11-First shell, 12-Electrode pair, 13-Spiral conveyor, 111-First inlet, 112-First outlet, 113-Scale outlet, 21-Second shell, 22-Sewage grid, 211-Second inlet, 212-Second outlet, 213-Exhaust valve, 214-Sewage valve, 121-Anode, 122-Cathode, 123-Sacrificial anode, 124-Vibration generator, 114-Drive motor, 3-Control cabinet, 4-Power distribution cabinet, 5-Support unit. Detailed Implementation

[0026] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0027] like Figure 1 As shown, combined with Figure 2-3 The present invention provides an electrochemical intermittent reverse electrode composite electroadsorption device, comprising an electrochemical intermittent reverse electrode composite electroadsorption device 1 and a spiral microbubble descaling device 2; the electrochemical intermittent reverse electrode composite electroadsorption device 1 is used for electrolytic descaling, and the spiral microbubble descaling device 2 further descaling and degassing the electrolyzed water to improve the water quality of the circulating cooling water.

[0028] The electrochemical intermittent polarity reversal composite electroadsorption device 1 includes a first housing 11, an electrode pair 12, and a screw conveyor 13 disposed inside the first housing 11. The first housing 11 is cylindrical at the top and trapezoidal at the bottom. A first water inlet 111 and a first drain outlet 112 are provided on the side wall of the first housing 11, with the first water inlet 111 being higher than the first drain outlet 112. A scale discharge outlet 113 is provided at the bottom of the first housing 11. The electrode pair 12 is connected to a DC power supply via a cable. The DC power supply intermittently reverses the polarity of the electrode pair 12 to remove the scale adhering to the electrode pair 12. The screw conveyor 13 is a rotating shaft with helical blades. The screw conveyor 13 is horizontally disposed at the bottom of the first housing 11 and below the electrode pair 12. The scale discharge outlet 113 is located below the screw conveyor 13 and close to one end of the screw conveyor 13.

[0029] The spiral microbubble cleaning device 2 includes a second housing 21 and a drain grid 22 disposed inside the second housing 21. The second housing 21 is cylindrical with elliptical end caps at both ends. The second housing 21 is provided with a second water inlet 211 and a second water outlet 212. The first drain outlet 112 and the second water inlet 211 are connected by a pipe. The top of the second housing 21 is provided with an exhaust valve 213 for discharging a large amount of dissolved gas in the circulating cooling water after the electrolysis reaction. The bottom of the second housing 21 is provided with a drain valve 214 for removing a large amount of scale crystal nuclei in the circulating cooling water after the electrolysis reaction.

[0030] The circulating cooling water enters the first housing 11 of the electrochemical intermittent reverse electrode composite electroadsorption device 1 through the first inlet 111. After being treated by the electrolytic reaction of the internal electrode pair 12, the circulating cooling water is discharged through the first outlet 112 and enters the spiral microbubble decontamination device 2.

[0031] In a specific embodiment, the electrode pair 12 includes an anode 121 and a cathode 122, which are arranged in parallel inside the first housing 11. Both the anode 121 and the cathode 122 are metal plates.

[0032] In a specific embodiment, the anode 121 is a titanium substrate coated with a noble metal, which is one of gold, silver and platinum group metals.

[0033] In a specific embodiment, a sacrificial anode 123 is provided on the anode 121, and the sacrificial anode 123 is made of copper alloy.

[0034] In a specific embodiment, the cathode 122 is a copper-clad stainless steel plate, and the cathode 121 is equipped with a vibration generator 124 for vibrating off the detached scale.

[0035] In a specific embodiment, the first housing 11 is provided with a drive motor 114 for driving the screw conveyor 13, and the output end of the drive motor 114 is coaxially connected to the rotating shaft of the screw conveyor 13.

[0036] In a specific embodiment, the system further includes a control cabinet 3 and a power distribution cabinet 4. The control cabinet 3 and the power distribution cabinet 4 are electrically connected. The control cabinet 3 controls the duration and voltage of the intermittent polarity reversal. The control cabinet 3 transmits DC power to the electrode pair 12 via a cable. The power distribution cabinet 4 provides power to the anode 121 and cathode 122, and also provides power to the drive motor 114.

[0037] In a specific embodiment, it also includes a support part 5 for supporting the electrochemical intermittent reverse electrode composite electroadsorption device and the spiral microbubble decontamination device. One end of the support part 5 is connected to the first housing 11 and the second housing 21, and the opposite end is connected to the mounting platform.

[0038] The descaling method of the electrochemical intermittent reverse electrode composite electroadsorption device of the present invention includes the following steps:

[0039] S1, circulating cooling water enters the electrochemical intermittent reverse electrode composite electroadsorption device 1 through the first inlet 111. Under the action of direct current, the cathode 122 undergoes a reduction reaction, forming a strongly alkaline environment. Scale-forming ions (Ca) in the circulating cooling water... 2+ Mg 2+ Cations (such as ions) gradually precipitate on the surface of the cathode 122. When the scale on the surface of the cathode 122 is saturated, the power distribution cabinet 4 reverses the polarity of the DC power supply.

[0040] With the positive and negative terminals reversed, the original cathode 122 becomes the anode, undergoing an oxidation reaction. The copper on the surface of the copper-clad stainless steel plate is corroded, making it easier for scale to detach from the cathode 122 surface. Simultaneously, the vibration generator 124 installed on the cathode 122 surface is activated, shaking off most of the scale. When the cathode 122 undergoes an oxidation reaction, the copper on the copper-clad stainless steel plate of the cathode 122 is corroded, forming copper ions (Cu). 2+ When it enters the circulating cooling water, it can kill bacteria and algae. The original anode 121 becomes the cathode, and a reduction reaction occurs, gradually releasing scale-forming ions from the circulating cooling water. When the scale is saturated, the scale can be removed by reversing the positive and negative electrodes once more.

[0041] This intermittent polarity reversal not only removes the scale buildup on the cathode but also generates a large number of copper ions with bactericidal and algae-removing functions, preventing microbial growth. The timing, duration, voltage, and other parameters of the intermittent polarity reversal can be manually set within control cabinet 3.

[0042] S2, the detached scale is conveyed to the scale discharge port 113 by the screw conveyor 13 and discharged from the scale discharge port 113; the circulating cooling water after electrochemical treatment is conveyed to the spiral microbubble cleaning device 2 through the first drain port 112;

[0043] S3, the circulating cooling water entering the spiral microbubble cleaning device 2 is degassed and cleaned by the cleaning grid 22, and the generated gas is discharged by the exhaust valve 213. The dirt deposited at the bottom of the spiral microbubble cleaning device 2 is discharged by the drain valve 214.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. An electrochemical intermittent reverse electrode composite electroadsorption device, characterized in that: It includes an electrochemical intermittent reverse electrode composite electroadsorption device (1) and a spiral microbubble descaling device (2) connected thereto. The electrochemical intermittent reverse electrode composite electroadsorption device (1) is used for electrolytic descaling, and the spiral microbubble descaling device (2) is used for wastewater discharge after electrolysis reaction. The electrochemical intermittent reversing composite electroadsorption device (1) includes a first housing (11) and an electrode pair (12) and a screw conveyor (13) disposed inside the first housing (11). The first housing (11) is provided with a first water inlet (111), a first drain outlet (112) and a scale outlet (113). The electrode pair (12) is connected to a DC power supply via a cable, and the DC power supply intermittently reverses the polarity of the electrode pair (12). The screw conveyor (13) is disposed at the bottom of the first housing (11) and is located below the electrode pair (12). The scale outlet (113) is located below the screw conveyor (13). The spiral microbubble cleaning device (2) includes a second housing (21) and a drain grid (22) disposed inside the second housing (21). The second housing (21) is provided with a second inlet (211) and a second outlet (212). The first drain outlet (112) and the second inlet (211) are connected by a pipe. The second housing (21) is provided with an exhaust valve (213) at the top and a drain valve (214) at the bottom. The electrode pair (12) includes an anode (121) and a cathode (122). The anode (121) and cathode (122) are arranged in parallel inside the first housing (11). The anode (121) and cathode (122) are both metal plates. The anode (121) is a titanium substrate coated with precious metals. The cathode (122) is a copper-clad stainless steel plate. A sacrificial anode (123) is provided on the anode (121). The sacrificial anode (123) is made of copper alloy. A vibration generator (124) is provided on the cathode (122).

2. The electrochemical intermittent reverse electrode composite electroadsorption device as described in claim 1, characterized in that: The precious metal is one of gold, silver, and platinum group metals.

3. The electrochemical intermittent reverse electrode composite electroadsorption device as described in claim 1, characterized in that: The first housing (11) is provided with a drive motor (114) for driving the screw conveyor (13), and the output end of the drive motor (114) is coaxially connected to the rotating shaft of the screw conveyor (13).

4. The electrochemical intermittent reverse electrode composite electroadsorption device as described in claim 1, characterized in that: It also includes a control cabinet (3) and a power distribution cabinet (4). The control cabinet (3) is electrically connected to the power distribution cabinet (4). The control cabinet (3) controls the duration and voltage of the intermittent polarity reversal. The control cabinet (3) transmits DC power to the electrode pair (12) through a cable.

5. The electrochemical intermittent reverse electrode composite electroadsorption device as described in claim 1, characterized in that: It also includes a support part (5), one end of which is connected to the first housing (11) and the second housing (21), and the opposite end is connected to the mounting platform.

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