CN113463123A - Pure hypochlorous acid electrolytic device of adjustable ph - Google Patents

Pure hypochlorous acid electrolytic device of adjustable ph Download PDF

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Publication number
CN113463123A
CN113463123A CN202110630956.XA CN202110630956A CN113463123A CN 113463123 A CN113463123 A CN 113463123A CN 202110630956 A CN202110630956 A CN 202110630956A CN 113463123 A CN113463123 A CN 113463123A
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China
Prior art keywords
hypochlorous acid
partition plate
side electrode
chamber
cathode
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Withdrawn
Application number
CN202110630956.XA
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Chinese (zh)
Inventor
陈星宏
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Dongguan Sunrise Electrode Industry Technology Co ltd
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Dongguan Sunrise Electrode Industry Technology Co ltd
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Priority to CN202110630956.XA priority Critical patent/CN113463123A/en
Publication of CN113463123A publication Critical patent/CN113463123A/en
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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
    • C25B9/21—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof with diaphragms two or more diaphragms
    • 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
    • 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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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Analytical Chemistry (AREA)
  • Automation & Control Theory (AREA)
  • Inorganic Chemistry (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)
  • Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)

Abstract

The invention discloses a pure hypochlorous acid electrolysis device capable of adjusting ph, which comprises a water tank, wherein a first partition plate is arranged at the bottom of the water tank, the first partition plate divides the inner space of the water tank into a clear water chamber and a brine chamber from top to bottom, a second partition plate is arranged in the clear water chamber, the second partition plate divides a side electrode chamber from the first partition plate, a first through hole is formed in the middle of the first partition plate, an anion membrane is arranged in the first through hole, a first anode is arranged above the anion membrane, a first cathode is arranged below the anion membrane, a second through hole is formed in the middle of the second partition plate, a cation membrane is arranged in the second through hole, a second cathode positioned in the clear water chamber and a second anode positioned in the side electrode chamber are respectively arranged on two sides of the cation membrane, and an exhaust port is formed in the top of the side electrode chamber. The invention can adjust the PH value and the effective chlorine concentration according to the needs, and can generate high-concentration hypochlorous acid with high efficiency through the side electrode group, and the generated hypochlorous acid is hypochlorous acid which does not contain sodium ions at all.

Description

Pure hypochlorous acid electrolytic device of adjustable ph
Technical Field
The invention relates to the field of hypochlorous acid generators, in particular to a pure hypochlorous acid electrolysis device capable of adjusting ph.
Background
Two common generators for generating hypochlorous acid by electrolysis are provided, one is a diaphragm type electrolytic tank, a cation diaphragm type electrolytic tank is used for electrolyzing saline solution, saline solution is introduced into the electrolytic tank on two sides of a cathode and an anode, or clear water is introduced into the cathode of the saline solution at the anode, so the electrolytic tank has obvious defects, hypochlorous acid generated by electrolysis is in an anode chamber containing the saline solution, and can contain a part of sodium ions, namely the manufactured hypochlorous acid is not pure hypochlorous acid, but is a mixed solution of hypochlorous acid and sodium hypochlorite; the second generator is a diaphragm-free type for electrolyzing dilute hydrochloric acid to generate hypochlorous acid, although the manufactured hypochlorous acid is pure hypochlorous acid, because the electrolyte contains hydrochloric acid, the pH of the generated hypochlorous acid is low, the pH is uncontrollable, the hydrochloric acid belongs to a control article and has strong acidity, and the hypochlorous acid is difficult to purchase and inconvenient to use.
The existing technology for generating hypochlorous acid by electrolysis has the following obvious defects:
(1) hypochlorous acid generated by electrolysis is not pure enough and often contains more sodium ions, and hypochlorous acid solution generated by electrolysis contains hypochlorous acid, hydrochloric acid and sodium hypochlorite;
(2) the pH of generated hypochlorous acid is uncontrollable, the pH is lower when the concentration of the hypochlorous acid is high, the pH value is too low, certain corrosivity is brought to metal, and certain irritation is brought to skin.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the technical defects and provides a pure hypochlorous acid electrolysis device capable of adjusting ph.
In order to solve the problems, the technical scheme of the invention is as follows: the utility model provides a pure hypochlorous acid electrolytic device of adjustable ph, includes the water tank, the water tank bottom is equipped with baffle one, baffle one divide into clear water room and salt solution room from top to bottom with the water tank inner space, be equipped with baffle two in the clear water room, baffle two divide the side electrode room, baffle one middle part is equipped with through-hole one, be equipped with the anion membrane in the through-hole one, anion membrane top is equipped with positive pole one, and the below is equipped with negative pole one, baffle two middle parts are equipped with through-hole two, be equipped with the cation membrane in the through-hole two, cation membrane both sides are equipped with the positive pole two that is located the clear water room and is located the side electrode room respectively, side electrode room top is equipped with the gas vent.
Furthermore, the cation membrane positioned in the through hole II can be detached, and the anode I and the cathode II in the clean water chamber can realize the exchange of the anode and the cathode by changing the anode and the cathode.
Further, the side electrode chambers are of an outward protruding structure.
Compared with the prior art, the invention has the advantages that:
(1) the invention can adjust the PH value and the effective chlorine concentration according to the requirement;
(2) high-concentration hypochlorous acid can be generated more efficiently through the side electrode group;
(3) the generated hypochlorous acid is completely free of sodium ions.
Drawings
Fig. 1 is a schematic structural view of the present invention.
As shown in the figure: 1. the device comprises a water tank, 2, a first partition plate, 3, a clean water chamber, 4, a brine chamber, 5, a second partition plate, 6, a side electrode chamber, 7, a first through hole, 8, an anion membrane, 9, a first anode, 10, a first cathode, 11, a second through hole, 12, a cation membrane, 13, a second anode, 14, a second cathode, 15 and an exhaust port.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments; all other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, a pure hypochlorous acid electrolysis unit of adjustable ph, includes water tank 1, water tank 1 bottom is equipped with baffle one 2, baffle one 2 is divided into clear water room 3 and salt solution room 4 from top to bottom with water tank 1 inner space, be equipped with baffle two 5 in the clear water room 3, side electrode room 6 is separated out to baffle two 5, baffle one 2 middle part is equipped with through-hole one 7, be equipped with anion membrane 8 in the through-hole one 7, anion membrane 8 top is equipped with positive pole one 9, and the below is equipped with negative pole one 10, baffle two 5 middle parts are equipped with through-hole two 11, be equipped with cation membrane 12 in the through-hole two 11, cation membrane 12 both sides are equipped with negative pole two 14 that are located clear water room 3 and positive pole two 13 that are located side electrode room 6 respectively, side electrode room 6 top is equipped with gas vent 15.
The cation membrane 12 in the through hole II 11 is detachable, and the anode I9 and the cathode II 14 in the clear water chamber 3 can realize the exchange of the anode and the cathode by changing the anode and the cathode.
The side electrode chambers 6 are of an outward protruding structure.
The principle is as follows:
1. CL in brine during operation of bottom cathode—、OH—Is attracted by the anode electric field to pass through the anion membrane to the clean water chamber of the anode. At the anode, Cl-is easy to lose electrons compared with OH-and is oxidized into chlorine atoms, and the chlorine atoms are combined into chlorine molecules in pairs to release chlorine. Namely:
2Cl--2e＝Cl2× (oxidation reaction)
CL2Dissolving in water to produce HCLO.
In a brine chamber, H+Is greater than Na+Readily available electrons, thus H+Electrons are continuously obtained from the cathode and reduced into hydrogen atoms, and the hydrogen atoms are combined into hydrogen molecules in pairs to release hydrogen from the cathode. Namely:
2H++2e＝H2↓ (reduction reaction)
Hypochlorous acid has an ionization constant of 3X 10 at 25 deg.C-8，
2. When the side electrode group works
a. When the electrode in the clean water chamber is the cathode, H contained in the clean water chamber+Electrons are continuously obtained from the cathode and reduced into hydrogen atoms, and the hydrogen atoms are combined into hydrogen molecules in pairs to release hydrogen from the cathode. Namely:
2H++2e＝H2↓ (reduction reaction)
The acidic H + is consumed at this time, serving the purpose of pH adjustment.
Side electrode indoor cause CL—The ions are blocked by the cation membrane and can not pass through the ion membrane to reach the side electrode chamber, so the reaction in the side electrode chamber is as follows:
4OH--4e-＝O2↑+2H2O
b. when the electrode in the clean water chamber is an anode, CL in the solution can be put into—And (4) converting to finally obtain HCLO. Can obviously promote in solutionThe effective chlorine concentration.
Clear water indoor H+Through the cation membrane to the cathode of the side electrode group, H+Is reduced, namely:
2H++2e＝H2↓ (reduction reaction)
The cathode of the side electrode group can be treated with acidic H+Consumed for the purpose of adjusting PH.
c. When the cation membrane is removed, the anode of the side electrode group converts cl-in water into chlorine, the chlorine is dissolved in water to form hypochlorous acid, the cathode converts H + into hydrogen to be discharged, and the side electrode group can increase the concentration of the hypochlorous acid in the water while adjusting the pH value.
Example 1:
1. 1L of clean water is injected into the clean water chamber, 100ml of saline water with the mass fraction of 2% is injected into the brine chamber, and the area of the cathode and the anode of the bottom electrode group are 40cm respectively2The cathode and anode areas of the side electrode group are respectively 30cm2The side electrode group is arranged in the clean water chamber and is a cathode, a cation membrane and a peripheral anode.
2. The bottom electrode group is connected with 6V and 4A circuits, and the side electrode group is connected with 5V and 3A circuits, and is powered on and powered off to work.
3. The data for recording the solution parameters in the clean water chamber after the work is completed are as follows:
working time Available chlorine PH
5min 76ppm 4.6
8min 134ppm 4.4
Example 2:
1. 1L of clean water is injected into the clean water chamber, 100ml of saline water with the mass fraction of 2% is injected into the brine chamber, and the area of the cathode and the anode of the bottom electrode group are 40cm respectively2The cathode and anode areas of the side electrode group are respectively 30cm2Wherein the side electrode group is arranged in the clean water chamber and is a cathode, a cation membrane and a peripheral anode;
2. the bottom electrode group is connected with 6V and 4A circuits to work for 5min and 8min respectively, and the side electrode group is connected with 5V and 3A circuits to work for 8min and 15min respectively;
3. the data for recording the solution parameters in the clean water chamber after the work is completed are as follows:
bottom electrode on time Side electrode on time Available chlorine PH
5min 8min 73ppm 5.2
8min 15min 121ppm 5.8
Example 3:
1. 1L of clean water is injected into the clean water chamber, 100ml of saline water with the mass fraction of 2% is injected into the brine chamber, and the area of the cathode and the anode of the bottom electrode group are 40cm respectively2The cathode and anode areas of the side electrode group are respectively 30cm2Wherein the side electrode group is used as an anode and a cathode in the clean water chamber;
2. the bottom electrode group is connected with 6V and 4A circuits to work respectively, and the side electrode group is connected with 5V and 3A circuits to work and is powered on or off at the same time;
3. the data for recording the solution parameters in the clean water chamber after the work is completed are as follows:
working time Available chlorine PH
5min 98ppm 3.4
8min 167ppm 2.8
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
The present invention and its embodiments have been described above, and the description is not intended to be limiting, and the drawings are only one embodiment of the present invention, and the actual structure is not limited thereto. In summary, those skilled in the art should appreciate that they can readily use the disclosed conception and specific embodiments as a basis for designing or modifying other structures for carrying out the same purposes of the present invention without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (3)

1. The utility model provides a pure hypochlorous acid electrolytic device of adjustable ph which characterized in that: the water tank comprises a water tank (1), a first partition plate (2) is arranged at the bottom of the water tank (1), the first partition plate (2) divides the inner space of the water tank (1) into a clear water chamber (3) and a brine chamber (4) from top to bottom, a second partition plate (5) is arranged in the clear water chamber (3), a side electrode chamber (6) is separated from the second partition plate (5), a first through hole (7) is formed in the middle of the first partition plate (2), an anion membrane (8) is arranged in the first through hole (7), a first anode (9) is arranged above the anion membrane (8), a first cathode (10) is arranged below the anion membrane (8), a second through hole (11) is formed in the middle of the second partition plate (5), a cation membrane (12) is arranged in the second through hole (11), a second cathode (14) positioned in the clear water chamber (3) and a second anode (13) positioned in the side electrode chamber (6) are respectively arranged on two sides of the cation membrane (12), and an exhaust port (15) is arranged at the top of the side electrode chamber (6).
2. The ph-adjustable pure hypochlorous acid electrolysis device according to claim 1, wherein: the cation membrane (12) in the through hole II (11) is detachable, and the anode I (9) and the cathode II (14) in the clear water chamber (3) can realize the exchange of the anode and the cathode by changing the anode and the cathode.
3. The ph-adjustable pure hypochlorous acid electrolysis device according to claim 1 or 2, wherein: the side electrode chambers (6) are of an outward protruding structure.
CN202110630956.XA 2021-06-07 2021-06-07 Pure hypochlorous acid electrolytic device of adjustable ph Withdrawn CN113463123A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110630956.XA CN113463123A (en) 2021-06-07 2021-06-07 Pure hypochlorous acid electrolytic device of adjustable ph

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110630956.XA CN113463123A (en) 2021-06-07 2021-06-07 Pure hypochlorous acid electrolytic device of adjustable ph

Publications (1)

Publication Number Publication Date
CN113463123A true CN113463123A (en) 2021-10-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110630956.XA Withdrawn CN113463123A (en) 2021-06-07 2021-06-07 Pure hypochlorous acid electrolytic device of adjustable ph

Country Status (1)

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CN (1) CN113463123A (en)

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Application publication date: 20211001

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