CN215667267U - System for hydrogen peroxide solution gets rid of free chlorine in electrolysis brine - Google Patents
System for hydrogen peroxide solution gets rid of free chlorine in electrolysis brine Download PDFInfo
- Publication number
- CN215667267U CN215667267U CN202121548736.4U CN202121548736U CN215667267U CN 215667267 U CN215667267 U CN 215667267U CN 202121548736 U CN202121548736 U CN 202121548736U CN 215667267 U CN215667267 U CN 215667267U
- Authority
- CN
- China
- Prior art keywords
- hydrogen peroxide
- storage tank
- pipeline
- control valve
- brine
- 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.)
- Expired - Fee Related
Links
Images
Landscapes
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
Abstract
The utility model discloses a system for removing free chlorine in electrolytic brine by hydrogen peroxide, which comprises a brine storage tank, a hydrogen peroxide storage tank, a primary brine storage tank and a hydrogen peroxide self-tank car, wherein the hydrogen peroxide self-tank car is connected with the input end of a hydrogen peroxide receiving pump through a hose, the output end of the hydrogen peroxide receiving pump is communicated with the upper part of the hydrogen peroxide storage tank through a connecting pipe with a control valve, the lower part of the hydrogen peroxide storage tank is communicated with the input end of a hydrogen peroxide pump through a connecting pipe with a control valve, the output end of the hydrogen peroxide pump is divided into two paths, and the two paths are respectively correspondingly connected with two electrolytic dechlorination systems. The utility model directly sends the hydrogen peroxide to the electrolytic dechlorination system, directly mixes the hydrogen peroxide with the fresh brine after the pH value is adjusted for dechlorination, and then conveys the hydrogen peroxide to the brine storage tank for salt dissolving after dechlorination, thereby avoiding the sulfate radicals generated during the chemical dechlorination, needing no new devices for removing the sulfate radicals in the brine, such as a new membrane method for removing the nitrate, the anhydrous sodium sulphate and the like, shortening the process flow and greatly reducing the labor intensity and the production cost.
Description
Technical Field
The utility model belongs to the technical field of chemical industry, relates to a system for removing free chlorine in electrolytic brine, and particularly relates to a system for removing free chlorine in electrolytic brine by using hydrogen peroxide.
Background
At present, in the production process of caustic soda, the fresh brine at the outlet of an ion membrane electrolytic cell contains HCLO and CLO besides a small amount of dissolved free chlorine—、CLO3 —. The substances enter a brine process along with the dilute brine, can corrode equipment and pipelines, influence the process control of primary brine, and even damage the filter resin of secondary brine, so that the content of partial metal ions in the secondary brine exceeds the standard, and the normal production of the ion-exchange membrane electrolytic cell is influenced. Therefore, the chlor-alkali process is provided with a vacuum dechlorination process and a chemical dechlorination process to remove the ions, but the existing system for removing the free chlorine in the fresh brine adopts a device for removing sodium sulfite dechlorination, including nitre and anhydrous sodium sulphate, and the energy consumption and the production cost are high.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, the utility model provides a system for removing free chlorine in electrolytic brine by using hydrogen peroxide.
The technical scheme adopted by the utility model is as follows: a system for removing free chlorine in electrolytic brine by hydrogen peroxide comprises a brine dissolving storage tank, a hydrogen peroxide storage tank, a primary brine storage tank and a hydrogen peroxide self-tank car, wherein the hydrogen peroxide self-tank car is connected with the input end of a hydrogen peroxide receiving pump through a hose, the output end of the hydrogen peroxide receiving pump is communicated with the upper part of the hydrogen peroxide storage tank through a connecting pipe with a control valve, the lower part of the hydrogen peroxide storage tank is communicated with the input end of a hydrogen peroxide pump through a connecting pipe with a control valve, the output end of the hydrogen peroxide pump is divided into two paths, and the two paths are correspondingly connected with two electrolytic dechlorination systems respectively.
Preferably, one of the output ends of the hydrogen peroxide pump is connected with an outlet pipeline of the dechlorination tower with a control valve, a flow meter and an automatic control valve are sequentially installed on the pipeline, the control valves are respectively installed at the front end pipeline section and the rear end pipeline section of the flow meter, the control valves are respectively installed at the front end pipeline section and the rear end pipeline section of the automatic control valve, the flow meter and the control valves at the two ends of the flow meter, the automatic control valve and the control valves at the two ends of the automatic control valve are respectively connected with a bypass pipeline in parallel, and the control valves are respectively installed in the bypass pipelines; the water-saving device is connected with a fresh salt water pipeline at the output end of the dechlorinating tower through a flow meter and an automatic control valve, and the fresh salt water pipeline at the output end of the dechlorinating tower is communicated with a salt dissolving water storage tank.
Preferably, a first flame arrester is additionally arranged on a drainage port of the salt water storage tank.
Preferably, the other path of the output end of the hydrogen peroxide pump is connected with the output end of a primary salt water conveying pump of the resin tower through a pipeline, a flow meter and an automatic control valve are sequentially installed on the pipeline, control valves are respectively installed at the front end pipe section and the rear end pipe section of the flow meter, control valves are respectively installed at the front end pipe section and the rear end pipe section of the automatic control valve, the flow meter and the control valves at the two ends of the flow meter, the automatic control valve and the control valves at the two ends of the automatic control valve are connected in parallel with a bypass pipeline, and a control valve is installed in the bypass pipeline; the output end of the conveying pump is communicated to a saline storage tank through a pipeline, and the saline storage tank is connected to the resin tower through a pumping pipeline.
Preferably, a second flame arrester is additionally arranged on a drain port at the top of the brine storage tank.
The utility model has the beneficial effects that: compared with the prior system, the system for removing free chlorine in the electrolytic brine by using hydrogen peroxide realizes that hydrogen peroxide is sent to an electrolytic dechlorination system, is directly mixed with the light brine after the pH value is adjusted for dechlorination, and is sent to a brine storage tank for brine decomposition after dechlorination, so that sulfate radicals generated by the system during chemical dechlorination are avoided, devices such as a membrane method for removing nitrate, anhydrous sodium sulphate and the like are not required to be newly built for removing the sulfate radicals in the brine, the process flow is shortened, and the labor intensity and the production cost are greatly reduced. The utility model has simple process system, low chlor-alkali operation cost and low energy consumption, obviously reduces the material cost for producing caustic soda to treat free chlorine and has popularization value in the chlor-alkali industry.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
In the figure: 1. the system comprises a hydrogen peroxide receiving pump, a hydrogen peroxide storage tank 2, a hydrogen peroxide pump 3, a hydrogen peroxide pump 4, a dilute brine pump 5, a salt dissolving water storage tank 6, a first fire arrester 7, a primary brine delivery pump 8, a brine storage tank input pipeline 8, a second fire arrester 9, a primary brine storage tank 10, a brine storage tank 11, a resin tower 12, and a dilute brine pipeline 13 at the output end of a dechlorination tower.
Detailed Description
The utility model is further explained below with reference to the drawings;
as shown in fig. 1, a system for hydrogen peroxide to get rid of free chlorine in electrolytic brine, including salt solution storage tank 5, hydrogen peroxide storage tank 2, primary brine storage tank 10, hydrogen peroxide is from the tank wagon, hydrogen peroxide is connected through the hose and hydrogen peroxide receiving pump 1's input from the tank wagon, switch on through the connecting pipe that has the control valve between hydrogen peroxide receiving pump 1's the output and the 2 upper portions of hydrogen peroxide storage tank, the lower part of hydrogen peroxide storage tank 2 and hydrogen peroxide pump 3's input switch on through the connecting pipe that has the control valve, the output of hydrogen peroxide pump 3 is divided into two routes, two routes correspond respectively and lead to two electrolysis dechlorination systems (get rid of free chlorine system in the brine), specifically do:
one path of the output end of the hydrogen peroxide pump 3 is connected with an outlet pipeline 4 of the dechlorination tower with a control valve, a flow meter FIT324 and a self-control valve FICA324 are sequentially installed on the pipeline, control valves are respectively installed at the front end pipeline section and the rear end pipeline section of the flow meter FIT324, control valves are respectively installed at the front end pipeline section and the rear end pipeline section of the self-control valve FICA324, the flow meter FIT324 and the control valves at the two ends of the flow meter FIT324, the self-control valve FICA324 and the control valves at the two ends of the self-control valve FICA are connected in parallel with a bypass pipeline, and control valves are respectively installed in the bypass pipeline; the chemical dechlorination method comprises the steps that a flow meter FIT324 and an automatic control valve FICA324 are connected with a fresh salt water pipeline 13 at the output end of a dechlorination tower, a chemical reagent hydrogen peroxide is added for chemical dechlorination, the fresh salt water pipeline 13 at the output end of the dechlorination tower is communicated with a salt dissolving water storage tank 5, the chemically dechlorinated fresh salt water enters the salt dissolving water storage tank 5, and a first flame arrester 6 is additionally arranged at a emptying port of the salt dissolving water storage tank and used for emptying oxygen generated in the chemical dechlorination process.
The other path of the output end of the hydrogen peroxide pump 3 is connected with the output end of the primary brine delivery pump 7 through a pipeline, a flow meter FI5105 and an automatic control valve ARCA5102 are sequentially installed on the pipeline, control valves are respectively installed at the front pipeline section and the rear pipeline section of the flow meter FI5105, control valves are respectively installed at the front pipeline section and the rear pipeline section of the automatic control valve ARCA5102, the flow meter FI5105 and the control valves at the two ends of the flow meter FI5105, the automatic control valve ARCA5102 and the control valves at the two ends of the automatic control valve ARCA5102 are connected in parallel with a bypass pipeline, and a control valve is installed in the bypass pipeline; the pipeline is connected with an output end pipeline of a primary brine conveying pump 7 through a flowmeter FI5105 and an automatic control valve ARCA5102 in sequence, the output end pipeline of the conveying pump 7 is connected with an input pipeline 8 of a brine storage tank, and a brine storage tank 11 is connected to a resin tower 12 through a pumping pipeline. Adding a chemical reagent hydrogen peroxide through a hydrogen peroxide pump 3 to ensure that the brine entering the resin tower does not contain free chlorine, thereby preventing the resin from being damaged; a second flame arrester 9 is additionally arranged at a drain port at the top of the saline water storage tank 11 to prevent oxygen accumulation and pipeline air resistance.
The working principle of the utility model is as follows: hydrogen peroxide is sent to a hydrogen peroxide storage tank 2 from a hose for a tank car through a hydrogen peroxide receiving pump 1, then sent to an electrolytic dechlorination process through a hydrogen peroxide pump 3, alkali is added into light brine from a dechlorination tower to adjust the pH value of the light brine, a chemical reagent hydrogen peroxide is added into an outlet pipeline 4 of the dechlorination tower for chemical dechlorination, the chemically dechlorinated light brine enters a salt dissolving water storage tank 5 for salt dissolving, and oxygen generated in the chemical dechlorination process is emptied through a first flame arrester 6. According to the requirement of primary brine refining, a certain amount of free chlorine is contained in the chemically dechlorinated fresh brine, and hydrogen peroxide is added into the outlet of a primary brine delivery pump 7 of a primary brine storage tank 10 through a hydrogen peroxide pump 3 so as to ensure that the brine entering a resin tower does not contain the free chlorine, thereby preventing resin from being damaged.
It should be noted that: the hydrogen peroxide automatic control valve and the flow meter are made of 304 stainless steel, and nitric acid passivation treatment is carried out before use.
The above description is only a preferred embodiment of the present invention, and it should be noted that: any person skilled in the art can make changes or modifications within the scope of the present invention, which is within the scope of the present invention.
Claims (5)
1. A system for removing free chlorine in electrolytic brine by hydrogen peroxide is characterized in that: the device comprises a salt dissolving water storage tank (5), a hydrogen peroxide storage tank (2), a primary salt water storage tank (10) and a hydrogen peroxide self-tank truck, wherein the hydrogen peroxide self-tank truck is connected with the input end of a hydrogen peroxide receiving pump (1) through a hose, the output end of the hydrogen peroxide receiving pump (1) is communicated with the upper part of the hydrogen peroxide storage tank (2) through a connecting pipe with a control valve, the lower part of the hydrogen peroxide storage tank (2) is communicated with the input end of a hydrogen peroxide pump (3) through a connecting pipe with a control valve, the output end of the hydrogen peroxide pump (3) is divided into two paths, and the two paths are correspondingly connected with two electrolytic dechlorination systems respectively.
2. The system for removing free chlorine in electrolytic brine by hydrogen peroxide according to claim 1, characterized in that: one path of the output end of the hydrogen peroxide pump (3) is connected with an outlet pipeline (4) of the dechlorination tower with a control valve, a flow meter FIT324 and a self-control valve FICA324 are sequentially installed on the pipeline, control valves are respectively installed at the front end pipeline section and the rear end pipeline section of the flow meter FIT324, control valves are respectively installed at the front end pipeline section and the rear end pipeline section of the self-control valve FICA324, the flow meter FIT324 and the control valves at the two ends of the flow meter FIT324, the self-control valve FICA324 and the control valves at the two ends of the flow meter FIT324 are connected in parallel with a bypass pipeline, and control valves are respectively installed in the bypass pipeline; the water-saving desalting device is connected with a fresh salt water pipeline (13) at the output end of the dechlorination tower through a flow meter FIT324 and an automatic control valve FICA324, and the fresh salt water pipeline (13) at the output end of the dechlorination tower is communicated with a salt water storage tank (5).
3. The system for removing free chlorine in electrolytic brine by hydrogen peroxide according to claim 2, characterized in that: a first flame arrester (6) is additionally arranged on a drainage port of the salt water storage tank.
4. The system for removing free chlorine in electrolytic brine by hydrogen peroxide according to claim 1, 2 or 3, characterized in that: the other path of the output end of the hydrogen peroxide pump (3) is connected with the output end of a primary saline water delivery pump (7) of the resin tower through a pipeline, a flow meter FI5105 and an automatic control valve ARCA5102 are sequentially installed on the pipeline, control valves are respectively installed at the front end pipeline section and the rear end pipeline section of the flow meter FI5105, control valves are respectively installed at the front end pipeline section and the rear end pipeline section of the automatic control valve ARCA5102, the flow meter FI5105 and the control valves at the two ends of the flow meter FI5105, the automatic control valve ARCA5102 and the control valves at the two ends of the automatic control valve ARCA5102 are connected in parallel with a bypass pipeline, and a control valve is installed in the bypass pipeline; the output end of the delivery pump (7) is communicated to a saline water storage tank (11) through a pipeline, and the saline water storage tank (11) is connected to the resin tower (12) through a pumping pipeline.
5. The system for removing free chlorine in electrolytic brine by hydrogen peroxide according to claim 4, characterized in that: a second flame arrester (9) is additionally arranged at the emptying port at the top of the brine storage tank (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121548736.4U CN215667267U (en) | 2021-07-08 | 2021-07-08 | System for hydrogen peroxide solution gets rid of free chlorine in electrolysis brine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121548736.4U CN215667267U (en) | 2021-07-08 | 2021-07-08 | System for hydrogen peroxide solution gets rid of free chlorine in electrolysis brine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215667267U true CN215667267U (en) | 2022-01-28 |
Family
ID=79979348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121548736.4U Expired - Fee Related CN215667267U (en) | 2021-07-08 | 2021-07-08 | System for hydrogen peroxide solution gets rid of free chlorine in electrolysis brine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215667267U (en) |
-
2021
- 2021-07-08 CN CN202121548736.4U patent/CN215667267U/en not_active Expired - Fee Related
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN208151489U (en) | A kind of hypochlorite generator | |
| CN201729694U (en) | Automatic control electrolysis system for processing printing and dyeing wastewater | |
| CN215667267U (en) | System for hydrogen peroxide solution gets rid of free chlorine in electrolysis brine | |
| CN204125535U (en) | A kind of device and slightly acidic electrolyzed oxidizing water spray disinfection system preparing slightly acidic electrolyzed oxidizing water | |
| CN211445922U (en) | Dechlorination system for ionic membrane caustic soda | |
| CN107201531B (en) | Strong acid light salt water recycling device after chlorate decomposer decomposes in electrolysis process | |
| CN209412330U (en) | A kind of hydrogen safe draining device | |
| CN105903499B (en) | Ion exchange tower acid-alkali regeneration waste water reuse system and reuse method | |
| CN112358095A (en) | Treatment method of EDTA complex nickel wastewater | |
| CN111003854A (en) | Device and method for electrolyzing mirabilite by using bipolar membrane electrodialysis equipment | |
| CN114380381A (en) | Harmless treatment method and device for chlorine dioxide generator residual liquid | |
| CN215592663U (en) | Self-gas circulation multistage pressure type dissolved air floatation system | |
| CN205495322U (en) | Vent gas treatment system in among acid etching waste liquid electricity chemical treatment | |
| CN108217856A (en) | A kind of electro-chemical water processing system and its method for treating water | |
| CN208632304U (en) | A kind of chlorine water dechlorination system | |
| CN210796655U (en) | Caustic soda evaporation alkaline condensate recycling system | |
| CN206476839U (en) | One kind complexing ultrafiltration electrolysis heavy metal wastewater thereby recycling system | |
| CN106086896A (en) | Based on the wiring board acidity etching liquid recycling system in heavy metal containing wastewater treatment | |
| CN218755165U (en) | Electrolyzed water generator with front-end water treatment system | |
| CN218642833U (en) | System for electrolyzing etching waste liquid and recycling chlorine and regenerated liquid | |
| CN220597134U (en) | Ion exchange resin desalination device | |
| CN219689519U (en) | Device for removing organic matters in caustic soda brine by ion membrane method | |
| CN205295490U (en) | A electrolysis equipment for producing ozone and chlorine | |
| CN215628339U (en) | Automatic distribution system of sodium hypochlorite generator salt water | |
| CN207227563U (en) | A kind of electrolytic cell water inlet system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220128 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |