Electrolytic method composite disinfectant generating device

Abstract

The utility model relates to the technical field of electrolytic method composite disinfectants, in particular to an electrolytic method composite disinfectant generating device which comprises an electrolytic bath, the electrolytic bath comprises a bath body, the inner space of the bath body is divided into an anode chamber and a cathode chamber by an electrolytic diaphragm, an anode electrode is arranged in the anode chamber, and a cathode electrode is arranged in the cathode chamber. The anode electrode and the cathode electrode are electrically connected with the electric control device respectively; the anode chamber is connected with the salt dissolving box, the salt dissolving box is connected with the salt adding bin, and the salt dissolving box is connected with the anode buffer tank; the anode buffer tank is connected with the anode chamber through an anode liquid inlet pipeline; the top of the anode buffer tank is connected with a vacuum pump which is connected with a disinfectant storage tank; the cathode chamber is connected with a cathode buffer tank, and the cathode buffer tank is connected with a cathode liquid inlet through a cathode liquid inlet pipeline; and the top of the cathode buffer tank is connected with a blow-down pipe. According to the utility model, the production efficiency of the electrolytic process composite disinfectant can be improved, the leakage of disinfection gas from the system is avoided, and the electrolytic process composite disinfectant can be safely and efficiently produced.

Description

Technical Field

[0001] The utility model relates to the technical field of electrolytic composite disinfectants, in particular to an electrolytic composite disinfectant generating device. Background Art

[0002] Chlorine dioxide is a highly effective, broad-spectrum, safe bactericidal, algaecidal and bleaching agent, and is recognized as the most ideal replacement product for chlorine-based disinfectants. Chlorine dioxide disinfectants have a wide range of applications, especially in the sterilization and disinfection of medical and health and food processing related industries. They can be sprayed to disinfect the environment and air, and to clean and disinfect various equipment, devices and pipelines. They can also be used in skin protection, oral disinfection, ophthalmic disinfection and other fields.

[0003] Chlorine dioxide disinfectant can be produced using an electrolytic chlorine dioxide synergistic disinfectant generator (referred to as an electrolytic generator), and the product is an electrolytic composite disinfectant. The electrolytic generator is based on an electrolytic cell, which is divided into an anode chamber and a cathode chamber by a cation exchange membrane. The saturated sodium chloride solution in the electrolytic cell is electrolyzed to produce a ClO-containing anode. 2 , Cl 2、 O 2 , H 2 O 2 The mixed disinfectant gas with equal components is then pumped with water to form a disinfectant solution, which is then put into use.

[0004] However, the existing electrolytic generator mainly uses a water ejector to draw disinfectant gas to form a disinfectant solution. During long-term use, the water ejector is prone to scaling and clogging due to the hardness of the water used, resulting in leakage of the disinfectant gas. At the same time, the gas generated at the anode during the electrolysis process is prone to adhere to the anode surface to block the passage of current, resulting in reduced electrolysis efficiency and affecting the production efficiency of the electrolytic composite disinfectant. Utility Model Content

[0005] In view of the technical problems of low production efficiency and easy leakage of existing electrolytic generators for producing electrolytic composite disinfectants, the utility model provides an electrolytic composite disinfectant generating device, which improves the production efficiency of the electrolytic composite disinfectant and prevents leakage of disinfectant gas from the system, thereby safely and efficiently producing electrolytic composite disinfectants.

[0006] The technical solution of the utility model is:

[0007] An electrolytic composite disinfectant generating device comprises an electrolytic cell, wherein the electrolytic cell comprises a cell body, wherein the inner space of the cell body is divided into an anode chamber and a cathode chamber by an electrolytic diaphragm, wherein the electrolytic diaphragm is a cation exchange membrane; an anode electrode is arranged in the anode chamber, and a cathode electrode is arranged in the cathode chamber, wherein the anode electrode and the cathode electrode are electrically connected to an electric control device respectively; an anode liquid inlet and an anode liquid outlet are arranged in the anode chamber; and a cathode liquid inlet and a cathode liquid outlet are arranged in the cathode chamber;

[0008] The anode liquid outlet is connected to the salt dissolving box through the anode liquid outlet pipe, and the top of the salt dissolving box is connected to the salt adding bin through the salt adding pipe, and a salt adding valve is arranged on the salt adding pipe; a water inlet is arranged at the bottom of the salt adding bin; an overflow hole is arranged on the upper side of the salt dissolving box, and the overflow hole is connected to the anode buffer tank through the overflow pipe, and a filter screen is arranged on the side of the overflow hole close to the salt dissolving box, and the aperture of the filter screen is ≤0.2mm; an anode water replenishment valve is arranged on the salt dissolving box;

[0009] The anode buffer tank is connected to the anode liquid inlet through an anode liquid inlet pipeline, and a circulation pump is arranged on the anode liquid inlet pipeline; an anode gas outlet is arranged on the top of the anode buffer tank, and the anode gas outlet is connected to the gas suction port of the vacuum pump through a negative pressure pipeline;

[0010] The cathode liquid outlet is connected to the liquid inlet of the cathode buffer tank through the cathode liquid outlet pipe, and the liquid outlet of the cathode buffer tank is connected to the cathode liquid inlet through the cathode liquid inlet pipe, and a circulation pump is arranged on the cathode liquid inlet pipe; an automatic exhaust valve is arranged on the top of the cathode buffer tank, and the automatic exhaust valve is connected to the vent pipe; a liquid discharge port is arranged at the bottom of the cathode buffer tank; and a cathode water replenishment valve is arranged on the cathode buffer tank.

[0011] Furthermore, the electric control device includes an electrolytic power supply, the negative pole of the electrolytic power supply is electrically connected to a cathode wire, and the cathode wire is electrically connected to the cathode electrode; the positive pole of the electrolytic power supply is electrically connected to an anode wire, and the anode wire is electrically connected to the anode electrode; and also includes a controller, which is electrically connected to the electrolytic power supply.

[0012] Furthermore, a window is provided on the salt dissolving box, and upper and lower limit warning lines are set on the window. The height of the solid salt in the salt dissolving box can be observed through the window. When the height of the solid salt in the salt dissolving box is lower than the set value, the salt adding valve is opened to add salt into the salt dissolving box.

[0013] Furthermore, a flow meter and a temperature sensor are provided on the anode liquid outlet pipe to monitor the flow rate and temperature of the liquid returning from the anode chamber.

[0014] Furthermore, a liquid level sensor is provided in the anode buffer tank. When the liquid level sensor in the anode buffer tank detects that the water level is too low and needs water replenishment, the anode water replenishment valve is controlled to open, and when the liquid level sensor indicates that the liquid level rises to a set height, the anode water replenishment valve is controlled to close, thereby realizing automatic water replenishment of the anode;

[0015] A liquid level sensor is arranged in the cathode buffer tank. When the liquid level sensor in the cathode buffer tank detects that the water level is too low and water replenishment is needed, the cathode water replenishment valve is controlled to open. After the liquid level sensor indicates that the liquid level rises to the set height, the cathode water replenishment valve is controlled to close, thereby realizing automatic water replenishment of the cathode.

[0016] Furthermore, the outlet of the vacuum pump is connected to the disinfectant storage tank or the water body to be treated through a pipeline.

[0017] Furthermore, the anode electrode is a mesh DSA anode. The full name of DSA anode is titanium-based metal oxide coated anode. It is an insoluble anode that can maintain a small distance from the cathode for a long time, thereby effectively controlling the ohmic voltage drop of the solution; in addition, the surface wettability of the DSA anode allows the electrolysis product gas solution to separate from its surface, which helps to reduce the voltage drop caused by gas film formation; the use of a mesh anode electrode is conducive to gas diversion and can quickly remove gas products on the electrode.

[0018] Furthermore, the cathode electrode is made of stainless steel or titanium alloy, which can meet the requirements of electrolytic reaction.

[0019] Furthermore, the material of the pipes in the electrolytic composite disinfectant generating device is UPVC. The UPVC material has a certain corrosion resistance and can meet the use requirements of the electrolytic composite disinfectant generating device.

[0020] The beneficial effects of the utility model are:

[0021] 1. The utility model provides an electrolytic composite disinfectant generating device, in which the gas outlet at the top of the anode buffer tank is connected to the vacuum pump through a negative pressure pipe. During the operation of the electrolytic composite disinfectant generating device, the anode buffer tank, the anode chamber and the salt dissolving box are all in a negative pressure environment, so that the gas generated by the anode passes through the salt dissolving box and the anode buffer tank under the action of negative pressure and enters the negative pressure pipe to avoid leakage of the disinfectant gas; at the same time, maintaining the negative pressure environment of the anode chamber helps to accelerate the escape of the gas in the anode liquid, and can avoid the gas adhering to the surface of the anode electrode to block the passage of current, thereby improving the electrolysis efficiency and the production efficiency of the electrolytic composite disinfectant.

[0022] 2. The utility model provides saturated salt water to the anode buffer tank and the anode chamber through a salt dissolving box, and the salt dissolving box supplies salt through a salt adding bin. The salt dissolving box and the salt adding bin are isolated from each other by a salt adding valve. The electrolytic composite disinfectant generating device can be kept running continuously during the salt adding process. At the same time, the negative pressure environment provided by the vacuum pump is used to prevent the gas generated by the anode from escaping during the salt adding process.

[0023] 3. The utility model is provided with an anode buffer tank and a cathode buffer tank separated from the electrolytic cell. On the one hand, the volume of the anode liquid and the cathode liquid in the electrolytic composite disinfectant generating device is increased, which is convenient for heat dissipation of the anode liquid after the reaction and is beneficial to the batch production of the electrolytic composite disinfectant and improves production efficiency. On the other hand, the volume of the electrolytic cell can be reduced, thereby shortening the distance between the anode electrode and the cathode electrode, reducing the resistance of the electrolyte, reducing the heat generated during the electrolysis process, and increasing the flow rate of the electrolyte on the surface of the electrode and the diaphragm, reducing the adhesion of the gas, and further improving the production efficiency of the electrolytic composite disinfectant. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the utility model or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0025] Figure 1 This is a schematic diagram of the structure of the electrolytic composite disinfectant generating device in Example 1.

[0026] In the figure, 1-electrolytic diaphragm, 2-anode chamber, 3-cathode chamber, 4-anode electrode, 5-cathode electrode, 6-electronic control device, 7-salt dissolving box, 8-salt adding warehouse, 9-anode buffer tank, 10-vacuum pump, 11-cathode buffer tank, 12-disinfectant storage tank, 13-water inlet, 14-anode water supply valve, 15-vent pipe, 16-cathode water supply valve, 17-drain port, 18-window. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0028] Example 1

[0029] An electrolytic composite disinfectant generating device comprises an electrolytic cell, the electrolytic cell comprises a cell body, the inner space of the cell body is divided into an anode chamber 2 and a cathode chamber 3 by an electrolytic diaphragm 1, the electrolytic diaphragm 1 is a cation exchange membrane; an anode electrode 4 is arranged in the anode chamber 2, the anode electrode 4 is a meshed DSA anode; a cathode electrode 5 is arranged in the cathode chamber 3, the material of the cathode electrode 5 is 316 stainless steel; the anode electrode 4 and the cathode electrode 5 are electrically connected to an electric control device 6 respectively; the electric control device 6 comprises an electrolytic power supply, the negative pole of the electrolytic power supply is electrically connected to a cathode wire, and the cathode wire is electrically connected to the cathode electrode 5; the positive pole of the electrolytic power supply is electrically connected to an anode wire, and the anode wire is electrically connected to the anode electrode 4; and a controller is also included, the controller is electrically connected to the electrolytic power supply; an anode liquid inlet is arranged at the bottom of the anode chamber 2, and an anode liquid outlet is arranged at the top; a cathode liquid inlet is arranged at the bottom of the cathode chamber 3, and a cathode liquid outlet is arranged at the top;

[0030] The anode liquid outlet is connected to the salt dissolving tank 7 through the anode liquid outlet pipe, and a flow meter and a temperature sensor are arranged on the anode liquid outlet pipe; the top of the salt dissolving tank 7 is connected to the salt adding bin 8 through the salt adding pipe, and a salt adding valve is arranged on the salt adding pipe; a water inlet 13 is arranged at the bottom of the salt adding bin 8; an overflow hole is arranged on the upper side of the salt dissolving tank 7, and the overflow hole is connected to the anode buffer tank 9 through the overflow pipe, and a filter screen is arranged on the side of the overflow hole close to the salt dissolving tank 7, and the aperture of the filter screen is ≤0.2mm; a window 18 and an anode water replenishment valve 14 are arranged on the salt dissolving tank 7;

[0031] The anode buffer tank 9 is connected to the anode liquid inlet through the anode liquid inlet pipeline, and a circulation pump is provided on the anode liquid inlet pipeline; an anode gas outlet is provided on the top of the anode buffer tank 9, and the anode gas outlet is connected to the gas suction port of the vacuum pump 10 through a negative pressure pipeline, and the outlet of the vacuum pump 10 is connected to the disinfectant storage tank 12 through a pipeline; a liquid level sensor is provided in the anode buffer tank 9;

[0032] The cathode liquid outlet is connected to the liquid inlet of the cathode buffer tank 11 through the cathode liquid outlet pipe, and the liquid outlet of the cathode buffer tank 11 is connected to the cathode liquid inlet through the cathode liquid inlet pipe, and a circulation pump is arranged on the cathode liquid inlet pipe; an automatic exhaust valve is arranged on the top of the cathode buffer tank, and the automatic exhaust valve is connected to the vent pipe 15; a drain port 17 is arranged at the bottom of the cathode buffer tank; a cathode water replenishment valve 16 is arranged on the cathode buffer tank; a liquid level sensor is arranged in the cathode buffer tank 11;

[0033] The material of the pipes in the electrolytic composite disinfectant generating device is UPVC.

[0034] The operation steps of the electrolytic composite disinfectant generating device in Example 1 are as follows:

[0035] (1) Turn on the vacuum pump 10, add solid salt to the salt adding bin 8, add an appropriate amount of water to the salt dissolving tank 7 through the anode water supply valve 14, and then open the salt adding valve. The solid salt in the salt adding bin 8 enters the salt dissolving tank 7 under the action of gravity and negative pressure;

[0036] (2) Repeat step (1) until a certain thickness of salt particles can be observed in the salt dissolving tank 7 through the viewing window 18, proving that the liquid in the salt dissolving tank 7 is saturated salt water; after the solid salt in the salt adding bin 8 has basically entered the salt dissolving tank 7, add water to the salt adding bin 8 through the water inlet 13 to wash away the solid salt remaining at the bottom, and then close the salt adding valve to retain a liquid with a depth of about 50 mm at the bottom of the salt adding bin 8, which acts as a water seal until the next time salt is added, when this part of the liquid at the bottom enters the salt dissolving tank 7 together with the newly added solid salt;

[0037] (3) Add water to the salt dissolving tank 7 through the anode water supply valve 14, and the saturated salt water in the salt dissolving tank 7 overflows into the anode buffer tank 9 through the overflow hole until the amount of saturated salt water entering the anode buffer tank 9 is greater than or equal to the volume of the anode chamber 2, then close the anode water supply valve 14, turn on the circulation pump on the anode liquid inlet pipe, and pump the saturated salt water into the anode chamber 2; add water to the cathode buffer tank 11 through the cathode water supply valve 16, and until the amount of water entering the cathode buffer tank 11 is greater than or equal to the volume of the cathode chamber 3, then close the cathode water supply valve 16, turn on the circulation pump on the cathode liquid inlet pipe, and pump water into the cathode chamber 3;

[0038] (4) The electrolysis power supply is turned on by the controller, and the electrolysis power supply supplies power to the anode electrode 4 and the cathode electrode 5. An electrolysis reaction occurs in the electrolytic cell, wherein the following reactions mainly occur at the anode:

[0039] 2Cl - -2e - →Cl 2 (Chloride ions are oxidized to generate chlorine gas under the action of an external power source);

[0040] Cl 2 +H 2 O→2HClO (chlorine gas hydrolyzes to form hypochlorous acid);

[0041] C1O - +2OH - -2e - →ClO 2 - +H 2 O (hypochlorite is oxidized to form chlorite);

[0042] C1O 2 - -e - →ClO 2(Chlorite is further oxidized to produce chlorine dioxide);

[0043] The following reactions mainly occur at the cathode:

[0044] 2H 2 O+2e - →H 2 +2OH - ;

[0045] The overall reaction formula is:

[0046] 2NaCl+6H 2 O→2ClO 2 +2NaOH+5H 2 ;

[0047] Anode output contains ClO 2 , Cl 2、 O 2 , H 2 O 2 The cathode mainly produces H 2 gas;

[0048] (5) The anode solution mixed with gas enters the salt dissolving tank 7 through the anode liquid outlet and the anode liquid outlet pipe. The solid salt solution remaining in the salt dissolving tank 7 is re-saturated in the diluted anode solution after electrolysis, and mixed with the original saturated salt solution in the salt dissolving tank 7, and continues to overflow into the anode buffer tank 9 for recycling. At the same time, the gas mixed with the anode solution enters the gas suction port of the vacuum pump 10 under the action of negative pressure, and then enters the disinfectant storage tank 12 containing a certain amount of water, and the disinfectant storage tank 12 is configured as an electrolytic composite disinfectant;

[0049] (6) The cathode solution (NaOH solution) mixed with gas enters the cathode buffer tank 11 through the cathode outlet and the cathode outlet pipe. The gas mixed with the cathode solution (i.e., H 2 ) is discharged through the vent pipe 15, and the remaining cathode liquid continues to be introduced into the cathode chamber 3 for recycling; during the circulation process, the cathode solution is regularly discharged through the drain port 17 and can be recycled as a NaOH solution of a certain concentration.

[0050] During the operation of the electrolytic composite disinfectant generating device, the liquid levels in the anode buffer tank 9 and the cathode buffer tank 11 are monitored by the liquid level sensors arranged in the anode buffer tank 9 and the cathode buffer tank 11. When the liquid level in the anode buffer tank 9 is lower than the set value, the anode water replenishment valve 14 is opened to replenish water in the salt dissolving tank 7, and then overflows into the anode buffer tank 9; when the liquid level in the cathode buffer tank 11 is lower than the set value, the cathode water replenishment valve 16 is opened to directly replenish water into the cathode buffer tank 11;

[0051] At the same time, the thickness of the undissolved solid salt particles in the salt dissolving box 7 is observed through the viewing window 18. When the thickness of the solid salt particles is too small, steps (1)-(2) are executed to add salt to the salt dissolving box 7.

[0052] Although the present invention is described in detail by referring to the accompanying drawings and in combination with the preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, a person skilled in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and these modifications or substitutions shall be within the scope of the present invention. Any person skilled in the art who is familiar with the present technical field may easily think of changes or substitutions within the technical scope disclosed in the present invention, and these shall be within the scope of protection of the present invention.

Claims

1. An electrolytic composite disinfectant generating device, comprising an electrolytic cell, the electrolytic cell comprising a cell body, characterized in that: The internal space of the tank body is divided into an anode chamber and a cathode chamber by an electrolytic diaphragm, and the electrolytic diaphragm is a cation exchange membrane; an anode electrode is arranged in the anode chamber, and a cathode electrode is arranged in the cathode chamber, and the anode electrode and the cathode electrode are electrically connected to the electric control device respectively; an anode liquid inlet and an anode liquid outlet are arranged in the anode chamber; and a cathode liquid inlet and a cathode liquid outlet are arranged in the cathode chamber; The anode liquid outlet is connected to the salt dissolving box through the anode liquid outlet pipe, and the top of the salt dissolving box is connected to the salt adding bin through the salt adding pipe, and a salt adding valve is arranged on the salt adding pipe; a water inlet is arranged at the bottom of the salt adding bin; an overflow hole is arranged on the upper side of the salt dissolving box, and the overflow hole is connected to the anode buffer tank through the overflow pipe, and a filter screen is arranged on the side of the overflow hole close to the salt dissolving box, and the aperture of the filter screen is ≤0.2mm; an anode water replenishment valve is arranged on the salt dissolving box; The anode buffer tank is connected to the anode liquid inlet through the anode liquid inlet pipeline, and a circulation pump is arranged on the anode liquid inlet pipeline; an anode gas outlet is arranged on the top of the anode buffer tank, and the anode gas outlet is connected to the gas suction port of the vacuum pump through a negative pressure pipeline, and the outlet of the vacuum pump is connected to the disinfectant storage tank through a pipeline; The cathode liquid outlet is connected to the liquid inlet of the cathode buffer tank through the cathode liquid outlet pipe, and the liquid outlet of the cathode buffer tank is connected to the cathode liquid inlet through the cathode liquid inlet pipe, and a circulation pump is arranged on the cathode liquid inlet pipe; an automatic exhaust valve is arranged on the top of the cathode buffer tank, and the automatic exhaust valve is connected to the vent pipe; a liquid discharge port is arranged at the bottom of the cathode buffer tank; and a cathode water replenishment valve is arranged on the cathode buffer tank.

2. The electrolytic composite disinfectant generating device according to claim 1, characterized in that: The electric control device includes an electrolytic power source, the negative pole of the electrolytic power source is electrically connected to a cathode wire, and the cathode wire is electrically connected to the cathode electrode; the positive pole of the electrolytic power source is electrically connected to an anode wire, and the anode wire is electrically connected to the anode electrode; and also includes a controller, which is electrically connected to the electrolytic power source.

3. The electrolytic composite disinfectant generating device according to claim 1, characterized in that: A window is provided on the salt dissolving box.

4. The electrolytic composite disinfectant generating device according to claim 1, characterized in that: A flow meter and a temperature sensor are provided on the anode liquid outlet pipeline.

5. The electrolytic composite disinfectant generating device according to claim 1, characterized in that: A liquid level sensor is arranged in the anode buffer tank; and a liquid level sensor is arranged in the cathode buffer tank.

6. The electrolytic composite disinfectant generating device according to claim 1, characterized in that: The anode electrode is a mesh-shaped DSA anode.

7. The electrolytic composite disinfectant generating device according to claim 1, characterized in that: The cathode electrode is made of stainless steel or titanium alloy.

8. The electrolytic composite disinfectant generating device according to claim 1, characterized in that: The material of the pipes in the electrolytic composite disinfectant generating device is UPVC.

Images