CN214168161U - Tubular plug-flow type sodium hypochlorite generator - Google Patents
Tubular plug-flow type sodium hypochlorite generator Download PDFInfo
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- CN214168161U CN214168161U CN202022992298.2U CN202022992298U CN214168161U CN 214168161 U CN214168161 U CN 214168161U CN 202022992298 U CN202022992298 U CN 202022992298U CN 214168161 U CN214168161 U CN 214168161U
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- Prior art keywords
- tubular
- water inlet
- water outlet
- cathode
- sodium hypochlorite
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- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 239000005708 Sodium hypochlorite Substances 0.000 title claims abstract description 22
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 97
- 238000007789 sealing Methods 0.000 claims abstract description 34
- 229910052751 metal Inorganic materials 0.000 claims abstract description 16
- 239000002184 metal Substances 0.000 claims abstract description 16
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 14
- 239000000460 chlorine Substances 0.000 claims description 14
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 12
- 229910052801 chlorine Inorganic materials 0.000 claims description 12
- 239000000956 alloy Substances 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000005260 corrosion Methods 0.000 claims description 6
- 230000007797 corrosion Effects 0.000 claims description 6
- 239000011780 sodium chloride Substances 0.000 claims description 6
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 3
- 239000010936 titanium Substances 0.000 claims description 3
- 229910052719 titanium Inorganic materials 0.000 claims description 3
- 238000005868 electrolysis reaction Methods 0.000 abstract description 15
- 238000004659 sterilization and disinfection Methods 0.000 abstract description 10
- 239000003792 electrolyte Substances 0.000 abstract description 4
- 235000015598 salt intake Nutrition 0.000 abstract description 4
- 239000012530 fluid Substances 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000017525 heat dissipation Effects 0.000 abstract description 2
- 238000009827 uniform distribution Methods 0.000 abstract description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000003651 drinking water Substances 0.000 description 4
- 235000020188 drinking water Nutrition 0.000 description 4
- 239000012266 salt solution Substances 0.000 description 4
- 239000007772 electrode material Substances 0.000 description 3
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 1
- 239000012267 brine Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 1
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- Water Treatment By Electricity Or Magnetism (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The utility model discloses a tubular plug-flow sodium hypochlorite generator. The tubular anode is coaxially positioned on the inner side of the tubular cathode, and the upper end and the lower end of the tubular cathode are fixedly connected with the water outlet end and the water inlet end sealing element respectively; the metal conductive connecting piece is nested between the water inlet end sealing piece and the lower end face of the tubular anode and is fixedly connected with the water outlet end and the water inlet end sealing piece through the tubular cathode; the metal conductive connecting piece and the outer side of the tubular cathode are respectively provided with a connecting end, and the connecting ends are respectively connected with the positive electrode and the negative electrode of the direct-current power supply in a wiring manner; the lower end of the annular columnar cavity is provided with a water inlet, and the upper end of the annular columnar cavity is provided with a water outlet. The utility model adopts the tubular electrolysis electrode, improves the structure of the generator, the small holes arranged on the upper part and the lower part of the generator are beneficial to the uniform distribution of the electrolyte between the electrolysis anode and the electrolysis cathode, the fluid flow state is the plug flow type, the electrolysis efficiency is high, and the salt consumption and the power consumption are low; the generator has simple structure, no reactor shell is separately arranged, no heat dissipation device is arranged, and the equipment cost is low; it is suitable for the disinfection link of small-sized rural water treatment stations.
Description
Technical Field
The utility model relates to a sodium hypochlorite generator, in particular to a tubular plug-flow type sodium hypochlorite generator which is suitable for the disinfection engineering of a rural small-sized water treatment station.
Background
The rural drinking water treatment plant generally has the problems of incomplete disinfection equipment and irregular disinfection process, and the life health is seriously threatened. The construction of a proper drinking water disinfection device by selecting a proper disinfection mode is an indispensable part for building rural drinking water plants. The sodium hypochlorite disinfection is low in cost, easy in raw material obtaining, simple in operation and high in safety, and can be widely applied to disinfection links of drinking water treatment in rural and urban areas.
The sodium hypochlorite solution can be prepared on site by electrolyzing saline solution by a sodium hypochlorite generator, and has the advantages of simple material selection and simple and convenient management. Therefore, the sodium hypochlorite generator is popularized and applied to produce the sterilized water, and the electrolysis of the salt water to prepare the sodium hypochlorite is suitable for being applied to small-sized rural water treatment stations. At present, the sodium hypochlorite generator mostly adopts plate electrodes, the electrolytic reaction is generated by arranging parallel electrode plates in an electrolytic bath, the electrolyte is unevenly distributed, the flow state is mostly a mixed flow type, the electrolysis efficiency is lower, the device is more complex, and the equipment purchase cost is high.
SUMMERY OF THE UTILITY MODEL
In order to overcome the problems existing in the prior art, the utility model aims to provide a tubular plug-flow sodium hypochlorite generator which has the advantages of even water distribution, high electrolysis efficiency and simple structure and is used for the disinfection link of a small rural water treatment station.
The utility model adopts the technical proposal that:
the utility model is an annular columnar cavity consisting of a tubular anode, a tubular cathode, a water inlet end sealing element, a water outlet end sealing element and a metal conductive connecting element; the tubular anode is coaxially positioned on the inner side of the tubular cathode, and the upper end and the lower end of the tubular cathode are respectively fixedly connected with the water outlet end sealing piece and the water inlet end sealing piece through threads; the metal conductive connecting piece is nested between the water inlet end sealing piece and the lower end face of the tubular anode and is fixedly connected with the water outlet end sealing piece and the water inlet end sealing piece through threads between the tubular cathode and the water outlet end sealing piece; the metal conductive connecting piece and the outer side of the tubular cathode are respectively provided with a connecting end which is respectively connected with the positive electrode and the negative electrode of the direct current power supply through a positive electrode connecting wire and a negative electrode connecting wire; the annular columnar cavity is of a structure with openings at the upper end and the lower end, and the lower end of the cavity is provided with a water inlet which is connected with a saline solution inlet pipe; the upper end of the cavity is provided with a water outlet which is connected with a water outlet pipe of the device.
The tubular anode electrode material is an oxide coating titanium electrode, and an outer side single-side coating is adopted.
The tubular cathode electrode material is chlorine corrosion resistant alloy, and the chlorine corrosion resistant alloy tube is the reactor shell.
2-6 water outlets and water inlets which are uniformly distributed and have diameters of 2-10 mm are symmetrically arranged at positions away from the pipe orifice at the upper end and the lower end of the tubular anode respectively.
The upper end of the water inlet hole and the lower end of the water outlet hole are respectively provided with a water inlet end plug and a water outlet end plug which are symmetrically distributed at the two ends of the tubular anode.
An O-shaped ring is arranged between the water inlet end sealing element and the metal conductive connecting piece shoulder.
The sodium chloride aqueous solution enters the device from a water inlet at the lower end of the device, firstly enters the tubular anode, enters the gap between the two electrodes through the water inlet hole to generate electrolytic reaction, enters the tubular anode through the water outlet hole, and flows out of the device from the water outlet hole.
The utility model has the advantages that:
1) the design of the electrolysis electrode is improved, the tubular electrolysis electrode is adopted, the structural design of the generator is improved, the small holes arranged on the upper part and the lower part of the generator are beneficial to the uniform distribution of electrolyte between the electrolysis anode and the electrolysis cathode, the fluid flow state is a plug flow type, the electrolysis efficiency is high, and the salt consumption and the power consumption are low.
2) The generator has simple structure, no reactor shell is separately arranged, no heat dissipation device is arranged, and the equipment cost is low; the utility model is suitable for a disinfection link in rural small-size water treatment station.
Drawings
Fig. 1 is a schematic sectional structural view of the present invention.
In the figure: 1. the water outlet end sealing piece comprises a water outlet end sealing piece, 2, a tubular cathode, 3, a water outlet end plug, 4, a water outlet hole, 5, a tubular anode, 6, a water inlet end sealing piece, 7, a water inlet hole, 8, a metal conductive connecting piece, 9, an O-shaped ring, 10, an anode wiring, 11, a cathode wiring, 12, a direct current power supply, 13, a water inlet, 14, a water outlet, 15 and a water inlet end plug.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
As shown in fig. 1, the tubular plug-flow sodium hypochlorite generator of the present invention mainly comprises a tubular anode 5, a tubular cathode 2, a water inlet end sealing element 6, a water outlet end sealing element 1 and a metal conductive connecting element 8 to form an annular cylindrical cavity; the tubular anode 5 is coaxially positioned on the inner side of the tubular cathode 2, and the upper end and the lower end of the tubular cathode 2 are fixedly connected with the water outlet end sealing element 1 and the water inlet end sealing element 6 through threads respectively; the metal conductive connecting piece 8 is nested between the lower end faces of the water inlet end sealing piece 6 and the tubular anode 5 and is fixedly connected with the water outlet end sealing piece 1 and the water inlet end sealing piece 6 through threaded connection between the tubular cathode 2 and the water outlet end sealing piece; the metal conductive connecting piece 8 and the outer side of the tubular cathode 2 are respectively provided with a connecting end which is respectively connected with the positive pole and the negative pole of a direct current power supply 12 through a positive pole connecting wire 10 and a negative pole connecting wire 11; the annular columnar cavity is of a structure with openings at the upper end and the lower end, and the lower end of the cavity is provided with a water inlet 13 which is connected with a saline solution inlet pipe; the upper end of the cavity is provided with a water outlet 14 which is connected with a water outlet pipe of the device.
As shown in figure 1, the tubular anode 5 is an oxide coating titanium electrode, and an outer side single-side coating is adopted.
As shown in fig. 1, the electrode material of the tubular cathode 2 is chlorine corrosion resistant alloy, and the chlorine corrosion resistant alloy tube is the reactor shell.
As shown in figure 1, 2-6 water outlets 4 and water inlets 7 which are uniformly distributed and have diameters of 2-10 mm are symmetrically arranged at positions away from the pipe orifices at the upper end and the lower end of the tubular anode 5 respectively.
As shown in fig. 1, a water inlet end plug 15 and a water outlet end plug 3 are respectively arranged at the upper end of the water inlet hole 7 and the lower end of the water outlet hole 4, and are symmetrically distributed at two ends of the tubular anode 5.
As shown in fig. 1, an O-ring 9 is arranged between the water inlet end sealing member 6 and the shoulder of the metal conductive connecting member 8.
As shown in figure 1, sodium chloride aqueous solution enters the device from a water inlet 13 at the lower end of the device, firstly enters the tubular anode 5, enters a gap between the two electrodes through a water inlet 7 to perform an electrolytic reaction, enters the tubular anode 5 through a water outlet 4, and flows out of the device from a water outlet 14. The cavity is in an annular column shape, water flow is not easy to back mix, and the fluid state is a plug flow type.
The utility model discloses move under low current density, can long-time steady operation and do not have the problem of generating heat, need not set up heat abstractor in the system.
The process of the brine electrolysis of the utility model is as follows:
during electrolysis, the salt solution flows in from the water inlet 13, flows into the tubular anode 5 through the metal conductive connecting piece 8 and the water inlet end sealing piece 6, the water flow flows into the electrode gap through the water inlet hole 7, the direct current power supply 12 is switched on to apply direct current to the generator after the water flow is stable, and the current density is 50-500A/m2The direct current promotes the electrolysis of the salt solution, Cl in the salt solution-Discharge on the surface of the tubular anode 5 generates a large amount of Cl2，H2O discharge on the surface of the tubular cathode 2 to generate a large amount of H2Remaining OH-With Na+The combination of NaOH and bubbles makes the gas phase and the liquid phase fully contact to generate a dissolution reaction, Cl2And contacting with NaOH solution to obtain target products NaClO and NaCl. The electrolyte which is fully reacted to obtain sodium hypochlorite flows into the tubular anode 5 through the water outlet hole 4, flows through the water outlet end sealing element 1 and flows out of the generator from the water outlet 14.
Example 1:
the salt solution with the concentration of 8 g/L is adopted by the system of the utility model for treatment. The system adopts a vertical placement mode, the effective length of the tubular electrode is 1.0 m, and the gap between the tubular cathode and the tubular anodeIs 4.5 mm. The operating conditions were as follows: the current density is 200A/m2The water inlet flow is 6.4L/h. The run results were as follows: the current efficiency of the sodium hypochlorite generator is about 76 percent, the power consumption is about 4.7 kWh/kg of available chlorine, the salt consumption is about 3.2 kg of sodium chloride/kg of available chlorine, and the concentration of the available chlorine in effluent is 2.5 g/L.
Example 2:
the salt solution with the concentration of 15 g/L is treated by the system of the utility model. The system adopts a horizontal placement mode, the effective length of the tubular electrode is 1.0 m, and the gap between the tubular cathode and the tubular anode is 4.5 mm. The operating conditions were as follows: the current density is 200A/m2The water inlet flow is 4L/h. The run results were as follows: the current efficiency of the sodium hypochlorite generator is about 82 percent, the power consumption is about 5 kWh/kg of available chlorine, the salt consumption is about 3.5 kg of sodium chloride/kg of available chlorine, and the concentration of the available chlorine in the effluent is 2.3 g/L.
Claims (6)
1. A tubular plug flow type sodium hypochlorite generator is characterized in that: the device mainly comprises a tubular anode (5), a tubular cathode (2), a water inlet end sealing element (6), a water outlet end sealing element (1) and an annular columnar cavity formed by metal conductive connecting pieces (8); the tubular anode (5) is coaxially positioned on the inner side of the tubular cathode (2), and the upper end and the lower end of the tubular cathode (2) are fixedly connected with the water outlet end sealing piece (1) and the water inlet end sealing piece (6) through threads respectively; the metal conductive connecting piece (8) is nested between the lower end faces of the water inlet end sealing piece (6) and the tubular anode (5) and is fixedly connected with the water outlet end sealing piece (1) and the water inlet end sealing piece (6) through threads between the tubular cathode (2); the metal conductive connecting piece (8) and the outer side of the tubular cathode (2) are respectively provided with a connecting end which is respectively connected with the positive pole and the negative pole of a direct current power supply (12) through a positive pole connecting wire (10) and a negative pole connecting wire (11);
the annular columnar cavity is of a structure with openings at the upper end and the lower end, and the lower end of the cavity is provided with a water inlet (13) which is connected with a saline water inlet pipe; the upper end of the cavity is provided with a water outlet (14) which is connected with a water outlet pipe of the device.
2. The tubular plug flow sodium hypochlorite generator of claim 1, wherein: the tubular anode (5) is an oxide coating titanium electrode and adopts an outer side single-side coating.
3. The tubular plug flow sodium hypochlorite generator of claim 1, wherein: the tubular cathode (2) is made of chlorine corrosion resistant alloy, and the chlorine corrosion resistant alloy tube is the reactor shell.
4. The tubular plug flow sodium hypochlorite generator of claim 1, wherein: 2-6 water outlet holes (4) and water inlet holes (7) which are uniformly distributed and have diameters of 2-10 mm are symmetrically arranged at positions away from the pipe orifice at the upper end and the lower end of the tubular anode (5).
5. The tubular plug flow sodium hypochlorite generator of claim 1, wherein: the upper end of the water inlet hole (7) and the lower end of the water outlet hole (4) are respectively provided with a water inlet end plug (15) and a water outlet end plug (3), and the two ends of the tubular anode (5) are symmetrically distributed.
6. The tubular plug flow sodium hypochlorite generator of claim 1, wherein: an O-shaped ring (9) is arranged between the water inlet end sealing element (6) and the shoulder of the metal conductive connecting piece (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022992298.2U CN214168161U (en) | 2020-12-14 | 2020-12-14 | Tubular plug-flow type sodium hypochlorite generator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022992298.2U CN214168161U (en) | 2020-12-14 | 2020-12-14 | Tubular plug-flow type sodium hypochlorite generator |
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| CN214168161U true CN214168161U (en) | 2021-09-10 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112410805A (en) * | 2020-12-14 | 2021-02-26 | 浙江大学 | Tubular plug-flow type sodium hypochlorite generator |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112410805A (en) * | 2020-12-14 | 2021-02-26 | 浙江大学 | Tubular plug-flow type sodium hypochlorite generator |
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