CN113322482A - Micro-acid and hypochlorous acid generator capable of continuously generating and generating method - Google Patents
Micro-acid and hypochlorous acid generator capable of continuously generating and generating method Download PDFInfo
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- CN113322482A CN113322482A CN202110722678.0A CN202110722678A CN113322482A CN 113322482 A CN113322482 A CN 113322482A CN 202110722678 A CN202110722678 A CN 202110722678A CN 113322482 A CN113322482 A CN 113322482A
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- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 23
- 239000002253 acid Substances 0.000 title claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 150
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 71
- 239000007788 liquid Substances 0.000 claims abstract description 34
- 150000003839 salts Chemical class 0.000 claims abstract description 26
- 238000003860 storage Methods 0.000 claims abstract description 22
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 15
- 239000000460 chlorine Substances 0.000 claims abstract description 15
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 15
- 230000001105 regulatory effect Effects 0.000 claims abstract description 12
- 239000000243 solution Substances 0.000 claims description 31
- 238000001514 detection method Methods 0.000 claims description 21
- 230000002378 acidificating effect Effects 0.000 claims description 16
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 claims description 15
- 230000005611 electricity Effects 0.000 claims description 9
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 8
- 239000012528 membrane Substances 0.000 claims description 8
- 239000012670 alkaline solution Substances 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 5
- 229920006395 saturated elastomer Polymers 0.000 claims description 4
- 239000011780 sodium chloride Substances 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 9
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical group ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 4
- 239000005708 Sodium hypochlorite Substances 0.000 description 4
- 230000000844 anti-bacterial effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000004659 sterilization and disinfection Methods 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 230000001590 oxidative effect Effects 0.000 description 3
- 239000003929 acidic solution Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 239000003899 bactericide agent Substances 0.000 description 2
- 230000007062 hydrolysis Effects 0.000 description 2
- 238000006460 hydrolysis reaction Methods 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical compound OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 description 1
- 238000012824 chemical production Methods 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 239000000645 desinfectant Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/70—Assemblies comprising two or more cells
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/14—Alkali metal compounds
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/22—Inorganic acids
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/24—Halogens or compounds thereof
- C25B1/26—Chlorine; Compounds thereof
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/50—Processes
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
- C25B15/02—Process control or regulation
- C25B15/023—Measuring, analysing or testing during electrolytic production
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
- C25B15/02—Process control or regulation
- C25B15/023—Measuring, analysing or testing during electrolytic production
- C25B15/025—Measuring, analysing or testing during electrolytic production of electrolyte parameters
- C25B15/029—Concentration
- C25B15/031—Concentration pH
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
- C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/13—Single electrolytic cells with circulation of an electrolyte
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/17—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
- C25B9/19—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms
Abstract
The invention discloses a micro-acid and hypochlorous acid generator and a generating method, which comprises at least one group of three-cavity electrolytic tanks and a circulating water tank; wherein, electrolysis chambers 1 to 3 are respectively arranged between the negative plate and the diaphragm, between the diaphragm and the positive plate and between the positive plate and the adjusting negative plate in the three-cavity electrolytic cell; the bottom of each electrolysis chamber is provided with an input port, and the upper part of each electrolysis chamber is provided with an output port; the input and output ports of the electrolysis cavities 2 and 3 are connected with the right cavity of the circulating water tank through a water pump; the input and output ports of the electrolysis chamber 1 are connected with the left chamber of the circulating water tank through a water pump; the circulating water tank and the high-concentration salt water tank are used for inputting high-concentration salt water through a water pump, and liquid generated by the right chamber is input into the HClO storage water tank; the current of the regulating pole piece and the negative pole piece can be regulated. The scheme can improve the generation efficiency of the hypochlorous acid, and the generated hypochlorous acid can be adjusted in PH and effective chlorine concentration according to actual requirements.
Description
Technical Field
The invention relates to the field of chemical production disinfection, in particular to a micro-acid and hypochlorous acid generator and a generation method.
Background
The slightly acidic hypochlorous acid water is also called slightly acidic electrolyzed water (SAEW for short) and slightly acidic electrolyzed oxidizing water, the pH value of the slightly acidic electrolyzed oxidizing water is 5.0-6.8, and the slightly acidic electrolyzed oxidizing water has high bactericidal effect which is dozens of times of the bactericidal effect of sodium hypochlorite with the same concentration. It is present only in solution, the concentrated solution is yellow, the dilute solution is colorless, the high concentration has a very pungent odor similar to chlorine, and is extremely unstable, a very weak acid, weaker than carbonic acid, and comparable to hydrogen sulfuric acid. Hypochlorous acid disinfectant is an emerging disinfection product and has been demonstrated to be one of safe, effective and environment-friendly disinfection and sterilization products. In the food field, compared with the commonly used sodium hypochlorite or alcohol bactericide, the bactericide can ensure the safety, and has the characteristics of reducing the cost and the environmental load.
The applicant has filed three patents in succession: a micro-acid hypochlorous acid generator, a generating method, a generating device for generating micro-acid hypochlorous acid and alkaline water, and a device for generating hypochlorous acid solution and sodium hydroxide. The idea of the design is gradually changed from small-scale devices for household use to industrial production. With the increasing of the generation scale, it is found that the original design idea is not only that equipment is enlarged, but also more technical problems are brought, for example, the third patent adopts a plurality of electrolytic cells to work in cooperation, but the generation scale is found to have low generation efficiency, low hypochlorous acid content and inconvenient use in actual production, so that the design needs to be more suitable for products required by large-scale production.
Disclosure of Invention
1. The technical problem to be solved is as follows:
in view of the above problems, the present invention provides a hypochlorous acid generator and a hypochlorous acid generating method for continuously generating slightly acidic hypochlorous acid, which can not only improve the efficiency of generating hypochlorous acid, but also adjust the PH and the effective chlorine concentration of generated hypochlorous acid according to actual needs, thereby achieving high efficiency, continuity and safety of hypochlorous acid generation.
2. The technical scheme is as follows:
a micro-acid and hypochlorous acid generator capable of continuously generating micro-acid is characterized in that: comprises at least one group of three-cavity electrolytic tanks and a circulating water tank; the three-cavity electrolytic cell is sequentially provided with a negative plate, a diaphragm, a positive plate and an adjusting negative plate from left to right; the negative plate is connected with the negative electrode of the power supply to realize negative electricity; the diaphragm separates the electrolytic cavities formed by the negative plate and the positive plate respectively; the positive plate is connected with the positive electrode of the power supply to realize positive electricity; the adjusting negative plate is connected with the negative electrode of the power supply to realize negative electricity; wherein an electrolysis chamber 1, an electrolysis chamber 2 and an electrolysis chamber 3 are respectively arranged between the negative plate and the diaphragm, between the diaphragm and the positive plate and between the positive plate and the regulating negative plate; wherein the electrolysis chamber 2 and the electrolysis chamber 3 are two communicated electrolysis chambers; the bottom parts of the electrolysis chamber 1, the electrolysis chamber 2 and the electrolysis chamber 3 are all provided with input ports, and the upper parts are all provided with output ports; the input and output ports of the electrolysis cavities 2 and 3 are connected with the right cavity of the circulating water tank through a water pump controlled by a circuit; the input and output ports of the electrolysis chamber 1 are connected with the left chamber of the circulating water tank through a water pump controlled by a circuit; the circulating water tank and the high-concentration salt water tank are used for inputting high-concentration salt water through a water pump controlled by a circuit; the high-concentration salt water is saturated salt water or salt water with the saturation degree of more than 70 percent; the circulating water tank inputs the liquid generated by the right chamber into the HClO storage water tank through an electromagnetic valve or a water pump; the HClO storage water tank is provided with an output port; the high-concentration salt water tank is connected with a corresponding water source through an electromagnetic valve.
A water level sensor is arranged in the right chamber of the circulating water tank; the water level sensor and each electromagnetic valve are connected with the MCU main control chip; a current automatic regulating circuit is arranged in a circuit connecting the negative plate and the negative electrode of the power supply; a current automatic adjusting circuit is arranged in a circuit connecting the adjusting negative plate and the negative electrode of the power supply; and the current automatic regulating circuits are connected with the MCU control chip to control the current passing through the pole pieces.
Further, the at least one group of three-cavity electrolytic cells is more than or equal to two groups of three-cavity electrolytic cells; wherein each group of three-cavity electrolytic cells is a series-connected three-cavity electrolytic cell group; the three-cavity electrolytic cell groups connected in series are formed by sequentially connecting the input and output ports of the same electrolytic cavities of each group until the output port of the three-cavity electrolytic cell of the last group is connected with the cavity corresponding to the circulating water tank.
Further, the at least one group of three-cavity electrolytic cells is more than or equal to two groups of three-cavity electrolytic cells; wherein each group of three-cavity electrolytic cells is a group of three-cavity electrolytic cells connected in parallel; the three-cavity electrolytic cell groups connected in parallel are characterized in that the output port of each group of electrolytic chambers is directly connected with the chamber corresponding to the circulating water tank.
Further, the three-cavity electrolytic cell comprises at least one group of negative plates, diaphragms, positive plates and adjusting negative plates which are circularly arranged from left to right, and the adjusting negative plate of the previous group is the negative plate of the next group.
Further, the diaphragm is an ionic membrane, and the ionic membrane isolates an electrolytic cavity formed by the negative plate and the positive plate.
Further, the left chamber is provided with an output port and an input port; wherein the output port is used for discharging the output of the alkaline liquid, and the input port is connected with a water source.
A method for continuously generating a micro-acid hypochlorous acid generator is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: and opening the corresponding water pump to enable the high-concentration salt water in the high-concentration salt water tank to quantitatively enter the left chamber or/and the right chamber of the circulating water tank, and then closing the water pump.
Step two: then the water inlet electromagnetic valves of the left and the right water tanks of the corresponding circulating water tank are opened to fill water into the water tank, and the switch of the electromagnetic valves is controlled by a water level sensor.
Step three: connecting all the electrode plates with corresponding power supplies; the electrolysis chambers 1, 2 and 3 start to electrolyze; simultaneously opening water pumps corresponding to the three electrolysis chambers, and generating alkaline solution in the electrolysis chamber 1; HCl and HClO solution is generated in the electrolysis chamber 2; generating NaCl and NaClO solution in the electrolytic chamber 3; the solutions generated in the electrolysis chambers 1, 2 and 3 are circulated and electrolyzed by corresponding water pumps.
Step four: liquid level changes in the left and right chambers are sensed through the water level sensors, signals are sent to the MCU main control chip, and the MCU main control chip issues commands to the water pumps to adjust liquid flow rates of the water pumps.
Step five: when the preset electrolysis time is reached, opening an output port electromagnetic valve of the right chamber to input the generated slightly acidic hypochlorous acid solution in the right chamber into the HClO storage water tank; and simultaneously, opening an output port solenoid valve of the left chamber to discharge the liquid in the left chamber.
Step six: after the liquid level sensor displays that the left chamber and the right chamber are completely discharged, the equipment continuously repeats the steps from the fifth step to the fifth step, and automatic continuous generation is realized; and stopping working when the liquid level sensing of the HClO storage water tank shows that the HClO storage water tank is full.
Further, the steps also include a detection process; the detection process comprises power-on detection, PH value and available chlorine debugging detection; the power-on detection is to detect whether the liquid in the storage tank exceeds a preset depth before the device is powered on and liquid is powered on; if not, performing the first step to the sixth step; and the PH value and effective chlorine debugging and detection is to detect the PH value of an HClO solution in an HClO storage water tank generated by the device for the first time after the electrification detection, if the generated PH value is not in a preset range, correspondingly adjusting the currents of the negative plate and the adjusting negative plate until the PH value is in the preset range, and adjusting the effective chlorine by adjusting the circulating electrolysis time.
3. Has the advantages that:
(1) corresponding electrolytic reaction has been carried out in the electrolysis trough in this device to hydrochloric acid solution and the reaction of weak alkaline NaClO solution once more in the solution that lets in circulation tank right side cavity, thereby effectively improved the efficiency problem that the chlorine that generates converts hypochlorous acid into, found according to practice, adopt this device can promote 3 to 6 times at the same saturated salt solution, its yield. The invention provides various electrolytic tank connection schemes, and can realize the selection of the schemes of occasions with different demands.
(2) The electrolytic cell in the device is provided with three electrodes to form three different electrolytic cavities for generating solution, and the PH value of generated liquid and the amount of generated liquid can be changed by changing the current and time of the third electrolytic cavity.
(3) The water pumps corresponding to the electrolysis chambers 1, 2 and 3 in the device are simultaneously opened, so that the liquid in the chambers circularly flows, the generated solution can be ensured to be mixed in the right chamber in time, and the high-concentration acid and alkali liquor which are just generated can be diluted in time; especially, the pH value in the cavity is increased after the generated sodium hypochlorite enters the right cavity, so that the reaction is more facilitated: cl2 + H2O = HCl + HClO, more hypochlorous acid can be obtained at the same current. At the same time, the pH of the left chamber can be made to show a slow rising process.
In conclusion, the device can realize the circulation electrolysis of acid and alkali, and realize the control of the PH value of the reacted solution and the effective chlorine concentration of the generated liquid by changing the current and the electrifying time.
Drawings
FIG. 1 is a schematic diagram of an embodiment of the present invention;
FIG. 2 is a diagram of an embodiment of the present invention in which three-chamber electrolyzers are connected in series;
FIG. 3 is a diagram of an embodiment of the present invention in which three chambers are connected in parallel;
FIG. 4 is a diagram of an embodiment of multiple sets of pole pieces in a three-chamber electrolytic cell of the present invention.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in the attached figure 1, the generator for continuously generating the micro-acid hypochlorous acid is characterized in that: comprises at least one group of three-cavity electrolytic tanks and a circulating water tank; the three-cavity electrolytic cell is sequentially provided with a negative plate, a diaphragm, a positive plate and an adjusting negative plate from left to right; the negative plate is connected with the negative electrode of the power supply to realize negative electricity; the diaphragm separates the electrolytic cavities formed by the negative plate and the positive plate respectively; the positive plate is connected with the positive electrode of the power supply to realize positive electricity; the adjusting negative plate is connected with the negative electrode of the power supply to realize negative electricity; wherein an electrolysis chamber 1, an electrolysis chamber 2 and an electrolysis chamber 3 are respectively arranged between the negative plate and the diaphragm, between the diaphragm and the positive plate and between the positive plate and the regulating negative plate; wherein the electrolysis chamber 2 and the electrolysis chamber 3 are two communicated electrolysis chambers; the bottom parts of the electrolysis chamber 1, the electrolysis chamber 2 and the electrolysis chamber 3 are all provided with input ports, and the upper parts are all provided with output ports; the input and output ports of the electrolysis cavities 2 and 3 are connected with the right cavity of the circulating water tank through a water pump controlled by a circuit; the input and output ports of the electrolysis chamber 1 are connected with the left chamber of the circulating water tank through a water pump controlled by a circuit; the circulating water tank and the high-concentration salt water tank are used for inputting high-concentration salt water through a water pump controlled by a circuit; the high-concentration salt water is saturated salt water or salt water with the saturation degree of more than 70 percent; the circulating water tank inputs the liquid generated by the right chamber into the HClO storage water tank through an electromagnetic valve or a water pump; the HClO storage water tank is provided with an output port; the high-concentration salt water tank is connected with a corresponding water source through an electromagnetic valve.
A water level sensor is arranged in the right chamber of the circulating water tank; the water level sensor and each electromagnetic valve are connected with the MCU main control chip; a current automatic regulating circuit is arranged in a circuit connecting the negative plate and the negative electrode of the power supply; a current automatic adjusting circuit is arranged in a circuit connecting the adjusting negative plate and the negative electrode of the power supply; and the current automatic regulating circuits are connected with the MCU control chip to control the current passing through the pole pieces.
The device adopts a three-cavity electrolytic cell, and after electrification, the reaction of the electrolytic chamber 1 is as follows: 2H2O + 2e = H2↑ + 2OH-(ii) a At this time, an alkaline solution is generated between the negative electrode sheet and the separator. The reaction of the electrolysis chamber 2 is: 2Cl- - 2e = Cl2↑；Cl2+ H2O = HCl + HClO; the acidic solution containing hydrochloric acid and hypochlorous acid generated in the electrolytic chamber 2 immediately before the positive electrode sheet and the separator. Because there is no membrane isolation between the positive plate and the adjusting negative plate, the reaction in the electrolysis chamber 3 is: 2Cl- - 2e = Cl2↑、Cl2+ Na OH = Na Cl + Na ClO; (ii) a In this way, a solution of NaCl and NaClO is formed in the electrolysis chamber 3, in which case the NaClO is hydrolyzed to a slightly alkaline state. Alkaline solution that produces in will electrolyzing chamber 1 through the pipeline passes through water pump and circulation tank's left cavity circulation electrolysis, and this alkaline solution can be collected to the later stage and carry out corresponding use, perhaps can directly discharge, and its basicity is very weak directly discharges and does not pollute. The hydrochloric acid and the hypochlorous acid generated in the electrolysis chamber 2 and the alkalescent solution generated in the electrolysis chamber are all input into the same right chamber, the hydrochloric acid solution reacts with the alkalescent NaClO solution in the right chamber to generate the hypochlorous acid again, the current value of the dispensing negative plate is adjusted, and the change of the pH value in the right chamber within the preset range is realized. The device can adjust the pH value of the right chamber within 5.0-6.8, and the effective chlorine within 50 ppm/L-300 ppm/L.
Further, the at least one group of three-cavity electrolytic cells is more than or equal to two groups of three-cavity electrolytic cells; wherein each group of three-cavity electrolytic cells is a series-connected three-cavity electrolytic cell group; the three-cavity electrolytic cell groups connected in series are formed by sequentially connecting the input and output ports of the same electrolytic cavities of each group until the output port of the three-cavity electrolytic cell of the last group is connected with the cavity corresponding to the circulating water tank.
As shown in the attached figure 2, the series connection of three-cavity electrolytic cell sets is only shown in two series connections, and the figure shows that the corresponding electrolytic cavities are connected in series, and finally the concentration of the liquid entering the circulating water tank can be obviously improved, so that the continuous production is realized, and the electrolytic cell set can be used in occasions with certain requirements on the generated flow and flow rate.
Further, the at least one group of three-cavity electrolytic cells is more than or equal to two groups of three-cavity electrolytic cells; wherein each group of three-cavity electrolytic cells is a group of three-cavity electrolytic cells connected in parallel; the three-cavity electrolytic cell groups connected in parallel are characterized in that the output port of each group of electrolytic chambers is directly connected with the chamber corresponding to the circulating water tank.
As shown in fig. 3, in parallel. The figure is merely exemplified with two sets in parallel. In the device, a plurality of electrolytic tanks are connected in parallel by a tee joint, and the liquid generated in each electrolytic chamber is introduced into different chambers of the corresponding circulating water tank. The generated product can meet the occasion with larger demand, and the number of groups of three-cavity electrolytic cell groups which are connected in parallel can be determined according to the requirement.
Further, the three-cavity electrolytic cell comprises at least one group of negative plates, diaphragms, positive plates and adjusting negative plates which are sequentially arranged from left to right, and the adjusting negative plate in the front group is the next group.
As shown in fig. 4, only one electrolytic cell is needed, and at least one group of negative plates, diaphragms, positive plates and adjusting negative plates are sequentially arranged in the electrolytic cell from left to right, and the adjusting negative plate in the previous group is the negative plate in the next group. The order of the pole pieces used in this embodiment is to ensure that the order is negative, positive, negative and positive …, i.e. the reaction equations in electrolysis chamber 1, electrolysis chamber 2 and electrolysis chamber 3 are the same. The scheme not only has the advantages of the two schemes, but also can save space.
Further, the diaphragm is an ionic membrane, and the ionic membrane isolates an electrolytic cavity formed by the negative plate and the positive plate.
Further, the left chamber is provided with an output port and an input port; wherein the output port is used for discharging the output of the alkaline liquid, and the input port is connected with a water source.
A method for continuously generating a micro-acid hypochlorous acid generator is characterized by comprising the following steps: the method comprises the following steps:
the method comprises the following steps: opening a corresponding water pump to enable the high-concentration salt water in the high-concentration salt water tank to quantitatively enter a left chamber or/and a right chamber of the circulating water tank, and then closing the water pump;
step two: then opening corresponding left and right water tank water inlet electromagnetic valves of the circulating water tank to fill water into the water tank, and controlling the opening and closing of the electromagnetic valves through a water level sensor;
step three: connecting all the electrode plates with corresponding power supplies; the electrolysis chambers 1, 2 and 3 start to electrolyze; simultaneously opening water pumps corresponding to the three electrolysis chambers, and generating alkaline solution in the electrolysis chamber 1; HCl and HClO solution is generated in the electrolysis chamber 2; generating NaCl and NaClO solution in the electrolytic chamber 3; the solutions generated in the electrolysis chambers 1, 2 and 3 are circulated and electrolyzed by corresponding water pumps;
step four: sensing the liquid level change in the left and right chambers through the water level sensor, and sending a signal to the MCU main control chip, wherein the MCU main control chip issues a command to each water pump to adjust the liquid flow rate;
step five: when the preset electrolysis time is reached, opening an output port electromagnetic valve of the right chamber to input the generated slightly acidic hypochlorous acid solution in the right chamber into the HClO storage water tank; simultaneously, opening an output port electromagnetic valve of the left chamber to discharge the liquid in the left chamber;
step six: after the liquid level sensor displays that the left chamber and the right chamber are completely discharged, the equipment continuously repeats the steps from the fifth step to the fifth step, and automatic continuous generation is realized; and stopping working when the liquid level sensing of the HClO storage water tank shows that the HClO storage water tank is full.
Further, the steps also include a detection process; the detection process comprises power-on detection, PH value and available chlorine debugging detection; the power-on detection is to detect whether the liquid in the storage tank exceeds a preset depth before the device is powered on and liquid is powered on; if not, performing the first step to the sixth step; and the PH value and effective chlorine debugging and detection is to detect the PH value of an HClO solution in an HClO storage water tank generated by the device for the first time after the electrification detection, if the generated PH value is not in a preset range, correspondingly adjusting the currents of the negative plate and the adjusting negative plate until the PH value is in the preset range, and adjusting the effective chlorine by adjusting the circulating electrolysis time.
The principle of controlling the pH value by controlling the current in the invention is as follows:
suppose that: the current between the negative plate and the positive plate is I1(ii) a Current I between the positive plate and the regulating negative plate2(ii) a The electrifying time is t;
h generated between the positive plate and the membrane at the moment+Is represented by the following reaction formula：
Wherein the number of ions is: h+The number of (A) is: i is1*t / 2*1.6*10-19；
Therefore, the molar concentration is: [ H ]+ ] = I1*t / 2*1.6*10-19*6.02*1023；
Let K = 2 x 1.6 x 10-19*6.02*1022*V ≈ 1.9*104V, t is the energization time;
then the molar concentration is calculated: [ H ]+ ] = [ HClO ] = I1*t / 1.9*104*V = I1*t / K；
The NaClO generated by the positive plate and the adjusting negative plate reacts as follows:
therefore, the number of molecules of NaClO is: i is2*t / 2*1.6*10-19 [ NaClO ] = I2*t / K；
The NaClO hydrolysis equilibrium constant is: kh = 3.12*10-7；
The hydrolysis equation is:
therefore, 3.12 x 10-7 = [ HClO ][ OH- ] / [ ClO- ]The solution is alkaline after the sodium hypochlorite is hydrolyzed.
In order to obtain an acidic solution, the elimination of ClO in the solution is required-Satisfy the following requirements
This reaction, when I1*t= I2T is just enough to completely react ClO-。
Therefore, the method for adjusting pH is I1>I2When the pH is lowered, I1<I2The pH increased.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A micro-acid and hypochlorous acid generator capable of continuously generating micro-acid is characterized in that: comprises at least one group of three-cavity electrolytic tanks and a circulating water tank; the three-cavity electrolytic cell is sequentially provided with a negative plate, a diaphragm, a positive plate and an adjusting negative plate from left to right; the negative plate is connected with the negative electrode of the power supply to realize negative electricity; the diaphragm separates the electrolytic cavities formed by the negative plate and the positive plate respectively; the positive plate is connected with the positive electrode of the power supply to realize positive electricity; the adjusting negative plate is connected with the negative electrode of the power supply to realize negative electricity; wherein an electrolysis chamber 1, an electrolysis chamber 2 and an electrolysis chamber 3 are respectively arranged between the negative plate and the diaphragm, between the diaphragm and the positive plate and between the positive plate and the regulating negative plate; wherein the electrolysis chamber 2 and the electrolysis chamber 3 are two communicated electrolysis chambers; the bottom parts of the electrolysis chamber 1, the electrolysis chamber 2 and the electrolysis chamber 3 are all provided with input ports, and the upper parts are all provided with output ports; the input and output ports of the electrolysis cavities 2 and 3 are connected with the right cavity of the circulating water tank through a water pump controlled by a circuit; the input and output ports of the electrolysis chamber 1 are connected with the left chamber of the circulating water tank through a water pump controlled by a circuit; the circulating water tank and the high-concentration salt water tank are used for inputting high-concentration salt water through a water pump controlled by a circuit; the high-concentration salt water is saturated salt water or salt water with the saturation degree of more than 70 percent; the circulating water tank inputs the liquid generated by the right chamber into the HClO storage water tank through an electromagnetic valve or a water pump; the HClO storage water tank is provided with an output port; the high-concentration salt water tank is connected with a corresponding water source through an electromagnetic valve;
a water level sensor is arranged in the right chamber of the circulating water tank; the water level sensor and each electromagnetic valve are connected with the MCU main control chip; a current automatic regulating circuit is arranged in a circuit connecting the negative plate and the negative electrode of the power supply; a current automatic adjusting circuit is arranged in a circuit connecting the adjusting negative plate and the negative electrode of the power supply; and the current automatic regulating circuits are connected with the MCU control chip to control the current passing through the pole pieces.
2. The generator for continuously generating the slightly acidic hypochlorous acid according to claim 1, wherein: the at least one group of three-cavity electrolytic cells is more than or equal to two groups of three-cavity electrolytic cells; wherein each group of three-cavity electrolytic cells is a series-connected three-cavity electrolytic cell group; the three-cavity electrolytic cell groups connected in series are formed by sequentially connecting the input and output ports of the same electrolytic cavities of each group until the output port of the three-cavity electrolytic cell of the last group is connected with the cavity corresponding to the circulating water tank.
3. The generator for continuously generating the slightly acidic hypochlorous acid according to claim 1, wherein: the at least one group of three-cavity electrolytic cells is more than or equal to two groups of three-cavity electrolytic cells; wherein each group of three-cavity electrolytic cells is a group of three-cavity electrolytic cells connected in parallel; the three-cavity electrolytic cell groups connected in parallel are characterized in that the output port of each group of electrolytic chambers is directly connected with the chamber corresponding to the circulating water tank.
4. The generator for continuously generating the slightly acidic hypochlorous acid according to claim 1, wherein: the three-cavity electrolytic cell comprises at least one group of negative plates, diaphragms, positive plates and adjusting negative plates which are sequentially and circularly arranged from left to right, and the front group of adjusting negative plates is the next group of negative plates.
5. The generator for continuously generating the slightly acidic hypochlorous acid according to claim 1, wherein: the diaphragm is an ionic membrane, and the ionic membrane isolates an electrolytic cavity formed by the negative plate and the positive plate.
6. The generator for continuously generating the slightly acidic hypochlorous acid according to claim 1, wherein: the left chamber is provided with an output port and an input port; wherein the output port is used for discharging the output of the alkaline liquid, and the input port is connected with a water source.
7. A method for continuously generating a slightly acidic hypochlorous acid generator, which is used for controlling the continuously generating slightly acidic hypochlorous acid generator according to any one of claims 1 to 6, comprising: the method comprises the following steps:
the method comprises the following steps: opening a corresponding water pump to enable the high-concentration salt water in the high-concentration salt water tank to quantitatively enter a left chamber or/and a right chamber of the circulating water tank, and then closing the water pump;
step two: then opening corresponding left and right water tank water inlet electromagnetic valves of the circulating water tank to fill water into the water tank, and controlling the opening and closing of the electromagnetic valves through a water level sensor;
step three: connecting all the electrode plates with corresponding power supplies; the electrolysis chambers 1, 2 and 3 start to electrolyze; simultaneously opening water pumps corresponding to the three electrolysis chambers, and generating alkaline solution in the electrolysis chamber 1; HCl and HClO solution is generated in the electrolysis chamber 2; generating NaCl and NaClO solution in the electrolytic chamber 3; the solutions generated in the electrolysis chambers 1, 2 and 3 are circulated and electrolyzed by corresponding water pumps;
step four: sensing the liquid level change in the left and right chambers through the water level sensor, and sending a signal to the MCU main control chip, wherein the MCU main control chip issues a command to each water pump to adjust the liquid flow rate;
step five: when the preset electrolysis time is reached, opening an output port electromagnetic valve of the right chamber to input the generated slightly acidic hypochlorous acid solution in the right chamber into the HClO storage water tank; simultaneously, opening an output port electromagnetic valve of the left chamber to discharge the liquid in the left chamber;
step six: after the liquid level sensor displays that the left chamber and the right chamber are completely discharged, the equipment continuously repeats the steps from the fifth step to the fifth step, and automatic continuous generation is realized; and stopping working when the liquid level sensing of the HClO storage water tank shows that the HClO storage water tank is full.
8. The continuous micro-acid generating hypochlorous acid generator of claim 7, wherein: the steps also comprise a detection process; the detection process comprises power-on detection, PH value and available chlorine debugging detection; the power-on detection is to detect whether the liquid in the storage tank exceeds a preset depth before the device is powered on and liquid is powered on; if not, performing the first step to the sixth step; and the PH value and effective chlorine debugging and detection is to detect the PH value of an HClO solution in an HClO storage water tank generated by the device for the first time after the electrification detection, if the generated PH value is not in a preset range, correspondingly adjusting the currents of the negative plate and the adjusting negative plate until the PH value is in the preset range, and adjusting the effective chlorine by adjusting the circulating electrolysis time.
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