CN220099203U - Light salt water dechlorination device - Google Patents
Light salt water dechlorination device Download PDFInfo
- Publication number
- CN220099203U CN220099203U CN202321642807.6U CN202321642807U CN220099203U CN 220099203 U CN220099203 U CN 220099203U CN 202321642807 U CN202321642807 U CN 202321642807U CN 220099203 U CN220099203 U CN 220099203U
- Authority
- CN
- China
- Prior art keywords
- dechlorination
- anode
- tank
- high polymer
- cathode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000006298 dechlorination reaction Methods 0.000 title claims abstract description 98
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title description 11
- 150000003839 salts Chemical class 0.000 title description 9
- 239000007788 liquid Substances 0.000 claims abstract description 33
- 239000012267 brine Substances 0.000 claims abstract description 30
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims abstract description 30
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims abstract description 23
- 239000000460 chlorine Substances 0.000 claims abstract description 23
- 229910052801 chlorine Inorganic materials 0.000 claims abstract description 23
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000001301 oxygen Substances 0.000 claims abstract description 5
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 5
- 229920000642 polymer Polymers 0.000 claims description 32
- 230000001105 regulatory effect Effects 0.000 claims description 13
- 229920005597 polymer membrane Polymers 0.000 claims description 11
- 239000012528 membrane Substances 0.000 claims description 8
- -1 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 4
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 4
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 230000000382 dechlorinating effect Effects 0.000 claims 4
- 238000000034 method Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000004064 recycling Methods 0.000 abstract description 5
- 238000005868 electrolysis reaction Methods 0.000 abstract description 4
- 238000007670 refining Methods 0.000 abstract description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 18
- 235000011121 sodium hydroxide Nutrition 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000003792 electrolyte Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The utility model belongs to the technical field of electrolysis, and particularly relates to a light brine dechlorination device which comprises a dechlorination tank, a tank cover, a cathode and an anode, wherein the tank cover is arranged at the top of the dechlorination tank, and the cathode and the anode are arranged in the dechlorination tank; the dechlorination groove is electrically connected with the negative electrode of the power supply, a gap is reserved between the anode and the dechlorination groove, the anode is electrically connected with the positive electrode of the power supply, and the anode is connected with the dechlorination groove through an insulating sleeve; the cathode is an oxygen cathode; the tank cover is provided with a liquid inlet and a chlorine outlet, and the side wall of the dechlorination tank is provided with a liquid outlet. The device simplifies the dechlorination process, reduces the production cost, and the dechlorinated liquid can be directly used for refining brine, thereby realizing the recycling of resources.
Description
Technical Field
The utility model belongs to the technical field of electrolysis, and particularly relates to a light brine dechlorination device.
Background
In the existing ionic membrane caustic soda process, sodium hydroxide, chlorine and hydrogen are produced by electrolyzing salt water, a large amount of chlorine is dissolved in the salt water which is the anode product of an electrolytic tank, but the salt water dissolved with the chlorine cannot be directly used for preparing salt water, the salt water can be used for preparing the salt water after free chlorine in the salt water is removed through the processes of temperature rising, acid regulation, vacuum, chemical dechlorination and the like, a large amount of equipment and raw material are needed for dechlorination, the treatment cost is very high, and the industrial development and application are not easy.
Disclosure of Invention
Aiming at the problems existing in the prior art, the utility model provides a light brine dechlorination device which simplifies the dechlorination process and reduces the production cost, and the dechlorinated liquid can be directly used for refining brine, thereby realizing the recycling of resources.
The technical scheme of the utility model is as follows:
the utility model provides a weak brine dechlorination device, includes dechlorination groove, capping, negative pole and positive pole, and dechlorination groove top sets up capping, sets up negative pole, positive pole inside, sets up polymer diaphragm between negative pole and the positive pole, and polymer diaphragm sets up on the negative pole, and the terminal surface of polymer diaphragm contacts with dechlorination groove, and negative pole dechlorination groove connects, and negative pole and dechlorination groove are the same material; the dechlorination groove is electrically connected with the negative electrode of the power supply, a gap is reserved between the anode and the dechlorination groove, the anode is electrically connected with the positive electrode of the power supply, and the anode is connected with the dechlorination groove through an insulating sleeve; the cathode is an oxygen cathode; the tank cover is provided with a liquid inlet and a chlorine outlet, and the side wall of the dechlorination tank is provided with a liquid outlet.
Preferably, the high polymer membrane is polytetrafluoroethylene fiber membrane, and the high polymer membrane is connected with the cathode.
Preferably, the anode comprises an anode rod and a net-shaped anode frame, wherein the anode rod is arranged in the net-shaped anode, and the anode rod is connected with the net-shaped anode frame.
Further preferably, a gap is arranged between the reticular anode frame and the bottom of the dechlorination groove, an anode rod passes through the anode and passes through the bottom of the dechlorination groove to be electrically connected with the positive electrode of the power supply, and the anode is connected with the dechlorination groove through an insulating sleeve.
Further preferably, the periphery of the anode frame is provided with high polymer diaphragms, gaps are reserved among the high polymer diaphragms around the anode frame, the tops of the high polymer diaphragms are connected, gaps are reserved between the high polymer diaphragms around the anode frame and the side walls of the dechlorination tank, and the high polymer diaphragms are arranged between the tops of the high polymer diaphragms close to the side walls of the dechlorination tank and the side walls of the dechlorination tank.
Further preferably, the side wall and the bottom of the high polymer membrane and the dechlorination groove enclose a region which is a cathode chamber, and the region enclosed by the high polymer membrane and the top and the bottom of the dechlorination groove is an anode chamber.
The cathode chamber in the dechlorination tank is communicated, the anode chamber in the dechlorination tank is communicated, and the cathode chamber is not communicated with the anode chamber.
Preferably, the anode is a metal anode.
Preferably, the liquid outlet and the liquid inlet are both provided with regulating valves, and the flow speed can be regulated through the regulating valves to maintain a certain liquid level.
Preferably, a liquid level gauge is arranged on the tank cover and is used for measuring the height of the weak brine in the dechlorination tank.
The utility model provides a light brine dechlorination device, which simplifies the dechlorination process, reduces the production cost, and can directly use the dechlorinated liquid for refining brine, thereby realizing the recycling of resources.
Drawings
FIG. 1 is a schematic diagram of the structure of the present utility model;
FIG. 2 is a top view of the dechlorination tank;
FIG. 3 is a transverse cross-sectional view of a dechlorination tank;
FIG. 4 is an enlarged view at A;
FIG. 5 is a vertical cross-sectional view of a dechlorination tank;
FIG. 6 is an enlarged view at B;
in the figure, 1 is a dechlorination tank, 2 is a tank cover, 3 is a liquid inlet, 4 is a chlorine outlet, 5 is a liquid outlet, 6 is an anode rod, 7 is an anode frame, 8 is a high polymer diaphragm, 9 is a cathode, 10 is a cathode chamber, 11 is an anode chamber, and 12 is a liquid level meter.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
As shown in the figure, the dilute brine dechlorination device comprises a dechlorination tank 1, a tank cover 2, a cathode 9 and an anode, wherein the tank cover 2 is arranged at the top of the dechlorination tank 1, the cathode 9 and the anode are arranged in the dechlorination tank, the cathode 9 is a net-shaped cathode, a high polymer diaphragm 8 is arranged between the cathode 9 and the anode, the high polymer diaphragm 8 is arranged on the cathode 9, the high polymer diaphragm 8 is connected with the cathode 9 and can be connected through bonding, the high polymer diaphragm 8 is in contact with the dechlorination tank 1, the cathode 9 dechlorination tank 1 is connected, and the cathode 9 and the dechlorination tank 1 are made of the same material; the dechlorination tank 1 is electrically connected with the negative electrode of the power supply, a gap is reserved between the anode and the dechlorination tank 1, the anode is electrically connected with the positive electrode of the power supply, and the anode is connected with the dechlorination tank 1 through an insulating sleeve; the cathode 9 is an oxygen cathode; a liquid inlet 3 and a chlorine outlet 4 are arranged on the tank cover 2, and a liquid outlet 5 is arranged on the side wall of the dechlorination tank 1; the side wall and the bottom of the high polymer diaphragm 8 and the dechlorination tank 1 are surrounded to form a cathode chamber 10, the region surrounded by the high polymer diaphragm 8 and the top and the bottom of the dechlorination tank 1 is an anode chamber 11, the cathode chamber 10 in the dechlorination tank 1 is communicated, the anode chamber 11 in the dechlorination tank 1 is communicated, the cathode 9 chamber is not communicated with the anode chamber 11, the liquid outlet 5, the liquid inlet 3 and the chlorine outlet 4 are all provided with regulating valves, the flow speed can be regulated through the regulating valves, and a certain liquid level height is maintained.
In another embodiment, the high molecular polymer membrane 8 is a polytetrafluoroethylene fiber membrane, and specifically, a polytetrafluoroethylene fiber membrane prepared in the diaphragm for chlor-alkali electrolytic cell of patent 90106755.5 and a method for producing the same may be selected.
In another embodiment, the dechlorination groove 1 and the groove cover 2 are connected through a flange, and a sealing gasket is arranged between the dechlorination groove 1 and the groove cover 2.
In another embodiment, the anode comprises an anode rod 6 and a net anode frame 7, the anode rod 6 is arranged in the net anode, the anode rod 6 is connected with the net anode frame 7, a gap is reserved between the net anode frame 7 and the bottom of the dechlorination tank 1, the anode rod 6 penetrates through the anode and passes through the bottom of the dechlorination tank 1 to be electrically connected with the positive electrode of the power supply, and the anode is connected with the dechlorination tank 1 through an insulating sleeve. The periphery of the anode frame 7 is provided with high polymer diaphragms 8, gaps are reserved among the high polymer diaphragms 8 around the anode frame 7, the tops are connected, gaps are reserved among the high polymer diaphragms 8 around the anode frame 7 and the side walls of the dechlorination tank 1, the high polymer diaphragms 8 are arranged between the tops of the high polymer diaphragms 8 close to the side walls of the dechlorination tank 1 and the side walls of the dechlorination tank 1, that is, as shown in fig. 2, only the high polymer diaphragms 8 can be seen from the top view of the dechlorination tank 1, grooves are formed among the high polymer diaphragms 8, and anodes are arranged in the grooves.
The anodes are all metal anodes.
In another embodiment, a liquid level gauge 12 is arranged on the tank cover 2 and is used for measuring the height of the light brine in the dechlorination tank 1.
The utility model provides a dilute brine dechlorination device, which is used for treating dilute brine produced by an ion membrane electrolytic cell and has the following functions: the high polymer membrane 8 divides the dechlorination tank 1 into an anode chamber 11 and a cathode chamber 10, the anode chamber 11 generates chlorine under the action of direct current, the electrolytic dilute brine generates the chlorine under the action of direct current, the high polymer membrane 8 blocks the chlorine from entering the cathode chamber 10, and simultaneously blocks hydroxyl ions from migrating to the anode chamber 11, and the generated chlorine enters a chlorine collecting device through a chlorine outlet 4; in the cathode chamber 10, under the action of direct current, water is generated to generate hydrogen and hydroxyl, the hydrogen generates water under the action of the oxygen cathode 9, hydroxyl ions and sodium ions are combined to form sodium hydroxide, and finally prepared electrolyte containing sodium hydroxide is conveyed to a brine distribution tank through a liquid outlet 5 for preparing refined brine, and is further used for caustic soda technology of an ionic membrane, so that the recycling of resources is realized, and the problems of high treatment cost and complex technology are avoided.
When the device is specifically used, the regulating valve of the liquid inlet 3 is opened, the dilute brine which is produced by the ionic membrane electrolytic tank and is dissolved with a large amount of chlorine is injected into the dechlorination tank 1 to a certain liquid level through the liquid inlet 3, the power supply is turned on, the chlorine is generated through electrolysis, the regulating valve on the chlorine outlet 4 is opened, the chlorine is conveyed to the chlorine collecting device through the chlorine outlet 4, the regulating valve on the liquid outlet 5 is opened, the electrolyte containing sodium hydroxide is conveyed to the brine distribution tank through the liquid outlet 5, the power supply is turned off after the electrolysis is completed, the regulating valve on the liquid outlet 5 is turned off, the regulating valve on the liquid inlet 3 is turned off, and finally the regulating valve on the chlorine outlet 4 is turned off.
The utility model provides a light brine dechlorination device, which simplifies the dechlorination process, reduces the production cost, and can directly use the dechlorinated liquid for refining brine, thereby realizing the recycling of resources.
Claims (10)
1. The utility model provides a weak brine dechlorination device, includes dechlorination groove (1), capping (2), negative pole (9) and positive pole, and dechlorination groove (1) top sets up capping (2), and inside sets up negative pole (9), positive pole, its characterized in that, set up macromolecular polymer diaphragm (8) between negative pole (9) and the positive pole, macromolecular polymer diaphragm (8) set up on negative pole (9), macromolecular polymer diaphragm (8) and dechlorination groove (1) contact, and negative pole (9) dechlorination groove (1) are connected, and negative pole (9) are the same material with dechlorination groove (1); the dechlorination tank (1) is electrically connected with the negative electrode of the power supply, a gap is reserved between the anode and the dechlorination tank (1), the anode is electrically connected with the positive electrode of the power supply, and the anode is connected with the dechlorination tank (1) through an insulating sleeve; the cathode (9) is an oxygen cathode; the groove cover (2) is provided with a liquid inlet (3) and a chlorine outlet (4), and the side wall of the dechlorination groove (1) is provided with a liquid outlet (5).
2. The device for dechlorinating light brine according to claim 1, wherein the high polymer membrane (8) is a polytetrafluoroethylene fiber membrane, and the high polymer membrane (8) is connected with the cathode (9).
3. A weak brine dechlorination apparatus according to claim 1 characterised in that the anode comprises an anode rod (6) and a mesh anode frame (7), the mesh anode having the anode rod (6) disposed therein, the anode rod (6) being connected to the mesh anode frame (7).
4. A weak brine dechlorination device according to claim 3 characterised in that a gap is provided between the mesh anode frame (7) and the bottom of the dechlorination tank (1), the anode rod (6) passes through the anode and is electrically connected with the positive electrode of the power supply through the bottom of the dechlorination tank (1), and the anode is connected with the dechlorination tank (1) through an insulating sleeve.
5. The weak brine dechlorination device according to claim 3, characterized in that the periphery of the anode frame (7) is provided with high polymer diaphragms (8), gaps are formed between the high polymer diaphragms (8) around the anode frame (7), the tops of the high polymer diaphragms (8) around the anode frame (7) are connected, gaps are formed between the high polymer diaphragms (8) around the anode frame (7) and the side walls of the dechlorination tank (1), and the high polymer diaphragms (8) are arranged between the tops of the high polymer diaphragms (8) close to the side walls of the dechlorination tank (1) and the side walls of the dechlorination tank (1).
6. A weak brine dechlorination device according to claim 3, characterized in that the region enclosed by the high polymer membrane (8) and the side wall and the bottom of the dechlorination tank (1) is a cathode chamber (10), and the region enclosed by the high polymer membrane (8) and the top and the bottom of the dechlorination tank (1) is an anode chamber (11).
7. The device for dechlorinating the dilute brine according to claim 1, wherein a cathode chamber (10) in the dechlorinating tank (1) is communicated, an anode chamber (11) in the dechlorinating tank (1) is communicated, and no communication exists between the cathode chamber (10) and the anode chamber (11).
8. The brine dechlorination apparatus of claim 1, wherein the anode is a metal anode.
9. A weak brine dechlorination apparatus according to claim 1 characterised in that the liquid outlet (5) and the liquid inlet (3) are provided with regulating valves.
10. A weak brine dechlorination apparatus according to claim 1 characterised in that a level gauge (12) is provided on the tank cover (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321642807.6U CN220099203U (en) | 2023-06-27 | 2023-06-27 | Light salt water dechlorination device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321642807.6U CN220099203U (en) | 2023-06-27 | 2023-06-27 | Light salt water dechlorination device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220099203U true CN220099203U (en) | 2023-11-28 |
Family
ID=88864047
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321642807.6U Active CN220099203U (en) | 2023-06-27 | 2023-06-27 | Light salt water dechlorination device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220099203U (en) |
-
2023
- 2023-06-27 CN CN202321642807.6U patent/CN220099203U/en active Active
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