CN110550707A - Electrodialysis water treatment facilities with middle electrode - Google Patents
Electrodialysis water treatment facilities with middle electrode Download PDFInfo
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- CN110550707A CN110550707A CN201910839944.0A CN201910839944A CN110550707A CN 110550707 A CN110550707 A CN 110550707A CN 201910839944 A CN201910839944 A CN 201910839944A CN 110550707 A CN110550707 A CN 110550707A
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- electrode plate
- pipe
- fixedly connected
- intermediate electrode
- water treatment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/4618—Devices therefor; Their operating or servicing for producing "ionised" acidic or basic water
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/469—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis
- C02F1/4693—Treatment of water, waste water, or sewage by electrochemical methods by electrochemical separation, e.g. by electro-osmosis, electrodialysis, electrophoresis electrodialysis
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/4618—Devices therefor; Their operating or servicing for producing "ionised" acidic or basic water
- C02F2001/46185—Devices therefor; Their operating or servicing for producing "ionised" acidic or basic water only anodic or acidic water, e.g. for oxidizing or sterilizing
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/4618—Devices therefor; Their operating or servicing for producing "ionised" acidic or basic water
- C02F2001/4619—Devices therefor; Their operating or servicing for producing "ionised" acidic or basic water only cathodic or alkaline water, e.g. for reducing
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Molecular Biology (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention relates to the technical field of salicylic acid preparation tools, and discloses an electrodialysis water treatment device with an intermediate electrode. The electric field force generated by the intermediate electrode plate prevents positive and negative ions from mixing with each other, the positive and negative ions move to the positive and negative electrodes respectively under the action of the electric field force, the cation and anion exchange membranes separate the cations and the anions, and electrolytic reaction is carried out, so that deionized water is generated, alkaline water and acidic water are also formed, and the structure solves the problem of secondary pollution caused by the waste of excess acid and salt in the existing preparation of sodium ethylene salicylate.
Description
Technical Field
The invention relates to the technical field of salicylic acid preparation tools, in particular to an electrodialysis water treatment device with an intermediate electrode.
Background
Salicylic acid, also known as o-hydroxybenzoic acid, is a fat-soluble organic acid, and in the pharmaceutical industry, salicylic acid itself is used as a disinfectant and antiseptic. As a medical intermediate, the compound is used for producing analgesic, diuretic, acetylsalicylic acid, sodium salicylate, salicylamide and other medicaments, and the salicylic acid is an important chemical raw material which is widely applied at present.
The main process for producing salicylic acid comprises the steps of reacting phenol with sodium hydroxide to generate sodium phenolate, then generating sodium salicylate through carbon dioxide under the high-temperature condition, acidifying the sodium salicylate through a large amount of sulfuric acid solution, but simultaneously generating sodium sulfate, easily causing waste and pollution of acid and salt in used liquid, and not well treating and recycling the used liquid in the prior art when the salicylic acid is produced.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides an electrodialysis water treatment device with an intermediate electrode, which has the advantage of recycling acid and salt in a use solution and solves the problem of pollution caused by excessive acid and salt waste in the existing sodium salicylate preparation process.
(II) technical scheme
in order to achieve the purpose of recycling the acid and the salt in the use solution, the invention provides the following technical scheme: an electrodialysis water treatment device with a middle electrode comprises a preparation device, wherein a sodium hydroxide inlet pipe is fixedly connected to the left side of the upper end of the preparation device, a sulfuric acid inlet pipe is fixedly connected to the right side of the upper end of the preparation device, a phenol discharge port is fixedly connected to the right side of the sodium hydroxide inlet pipe at the upper end of the preparation device, a carbon dioxide conveying pipe is fixedly connected to the middle of the lower end of the preparation device, a distillation pipe is fixedly connected to the upper end of the preparation device and the right side of the phenol discharge port at the upper end of the preparation device, a cooling device is fixedly connected to the lower end of the distillation pipe, a filtering and collecting device is arranged right below the cooling device, a filtering and discharging pipe is fixedly connected to the lower end of the filtering and collecting device, a return pipe is fixedly connected between the preparation device and the filtering and discharging, an intermediate electrode plate is arranged between the positive electrode plate and the negative electrode plate and inside the recovery device, and anion and cation exchange membranes are arranged between the intermediate electrode plate and the positive electrode plate as well as between the intermediate electrode plate and the negative electrode plate.
Preferably, the carbon dioxide transfer pipe should be disposed at a lower portion of the manufacturing apparatus, which is advantageous for increasing the reaction rate of carbon dioxide.
Preferably, the filter paper layer is fixedly arranged inside the filter collecting device, the through hole is formed in the lower end of the filter collecting device, and the salicylic acid can be filtered out by the filter paper layer.
Preferably, the return pipe is inclined, the lower end of the return pipe is provided with a plurality of pipe orifices, and the inclined return pipe can form return flow by utilizing the self weight of liquid.
Preferably, the diameter of the lower end of the return pipe is larger than the diameter of the upper end of the return pipe and the diameter of the filtering discharge pipe, so that the liquid at the lower end of the return pipe is blocked to cause the liquid to flow backwards into the filtering and collecting device.
Preferably, the left side and the right side of the lower end of the recovery device are fixedly connected with a first acidic solution pipeline, a first alkaline solution pipeline, a second acidic solution pipeline and a second alkaline solution pipe respectively.
Preferably, a plurality of the anion-cation exchange membranes may be provided.
Preferably, the positive electrode plate and the negative electrode plate are kept horizontal and have the same height as the intermediate electrode plate, so that the electromotive force formed by the intermediate electrode plate is uniform.
(III) advantageous effects
Compared with the prior art, the invention provides an electrodialysis water treatment device with an intermediate electrode, which has the following beneficial effects:
This electrodialysis water treatment facilities with intermediate electrode, positive electrode plate and negative electrode plate through setting up in the recovery unit make the intermediate electrode board produce electric field force, the electric field force that the intermediate electrode board produced prevents positive and negative ions and mixes each other, move to positive, negative pole respectively under the effect of electric field force, anion and cation exchange membrane distinguishes negative and positive ions again, and electrolytic reaction takes place, not only produce the deionized water, still form alkaline water and acid water, alkaline water can be used for preparing sodium hydroxide through first alkaline solution pipeline again, acid water can be used for acidizing preparation ethylene sodium salicylate through first acid solution pipeline again, this structure has reached when preparing sodium salicylate, carry out recycle's effect to the use liquid, thereby solved the extravagant too many sour and salt of current sodium salicylate preparation, cause the problem of pollution.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a front sectional view of the filtering and collecting device of the present invention;
FIG. 3 is a front sectional view of the recycling device of the present invention.
In the figure: 1 preparation device, 2 sodium hydroxide feeding pipe, 3 sulphuric acid feeding pipe, 4 phenol discharge port, 5 carbon dioxide conveying pipe, 6 distillation pipe, 7 cooling device, 8 filtering and collecting device, 801 filter paper layer, 802 through hole, 9 filtering and discharging pipe, 10 return pipe, 11 recovery device, 1101 first acidic solution pipeline, 1102 first alkaline solution pipeline, 1103 second acidic solution pipeline, 1104 second alkaline solution pipeline, 12 positive electrode plate, 13 negative electrode plate, 14 intermediate electrode plate and 15 anion-cation exchange membrane.
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 embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
Referring to fig. 1 to 3, an electrodialysis water treatment apparatus with a middle electrode includes a preparation apparatus 1, a sodium hydroxide feeding pipe 2 is fixedly connected to the left side of the upper end of the preparation apparatus 1, a sulfuric acid feeding pipe 3 is fixedly connected to the right side of the upper end of the preparation apparatus 1, a phenol discharging port 4 is fixedly connected to the upper end of the preparation apparatus 1 and the right side of the sodium hydroxide feeding pipe 2, a carbon dioxide conveying pipe 5 is fixedly connected to the middle portion of the lower end of the preparation apparatus 1, and the carbon dioxide conveying pipe 5 is disposed at the lower portion of the preparation apparatus 1, so as to increase the reaction rate of carbon dioxide. The upper end of the preparation device 1 is fixedly connected with a distillation tube 6 on the right side of a phenol discharge port 4, the lower end of the distillation tube 6 is fixedly connected with a cooling device 7, a filtering and collecting device 8 is arranged right below the cooling device 7, a filter paper layer 801 is fixedly arranged inside the filtering and collecting device 8, a through hole 802 is formed in the lower end of the filtering and collecting device 8, and salicylic acid can be filtered out of the filter paper layer 801.
The lower end of the filtering and collecting device 8 is fixedly connected with a filtering and discharging pipe 9, a return pipe 10 is fixedly connected between the preparation device 1 and the filtering and discharging pipe 9, the return pipe 10 is inclined, the lower end of the return pipe is respectively provided with a plurality of pipe openings, the inclined return pipe 10 can form a return flow by utilizing the self weight of liquid, the diameter of the lower end of the return pipe 10 is larger than the diameter of the upper end of the return pipe 10 and the diameter of the filtering and discharging pipe 9, and therefore the liquid at the lower end of the return pipe 10 is blocked to cause the liquid. A recovery unit 11 is fixedly connected to the lower end of the return pipe 10, and a first acidic solution pipe 1101, a first alkaline solution pipe 1102, a second acidic solution pipe 1103, and a second alkaline solution pipe 1104 are fixedly connected to the left and right sides of the lower end of the recovery unit 11, respectively. The left side and the right side of the interior of the recovery device 11 are respectively fixedly provided with a positive electrode plate 12 and a negative electrode plate 13, an intermediate electrode plate 14 is arranged between the positive electrode plate 12 and the negative electrode plate 13 and inside the recovery device 11, and the positive electrode plate 12, the negative electrode plate 13 and the intermediate electrode plate 14 are kept horizontal and have the same height, so that the electromotive force formed by the intermediate electrode plate 14 is ensured to be uniform. Anion and cation exchange membranes 15 are arranged between the intermediate electrode plate 14 and the positive electrode plate 12 and the negative electrode plate 13, and a plurality of anion and cation exchange membranes 15 can be arranged.
The working principle is as follows: when the electroosmosis water treatment device with the intermediate electrode works, firstly, mixed liquid in the filtering and discharging pipe 9 flows into the recovery device 11, and after distillation at a specific temperature is finished, the mixed liquid and the liquid in the preparation device 1 flow back into the recovery device 11 for recycling, and the specific steps are as follows: make intermediate plate electrode 14 produce the electric field power through positive electrode plate 12 and the negative electrode plate 13 that set up in recovery unit 11, the electric field power that intermediate plate electrode 14 produced prevents positive and negative ions intermix, move to positive, the negative pole respectively under the effect of electric field power, anion and cation exchange membrane 15 distinguishes anion and cation, and electrolytic reaction takes place, not only generate deionized water, still form alkaline water and acid water, alkaline water can be used for preparing sodium hydroxide through first alkaline solution pipeline 1102 again, acid water can be used for acidizing preparation sodium ethylene salicylate through first acid solution pipeline 1101 again, this structure has reached the effect that causes the use liquid recycle when preparing sodium ethylene salicylate, thereby solved current sodium ethylene salicylate preparation in-process, waste too many sour and salt and the problem that causes the pollution.
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.
Claims (7)
1. An electrodialysis water treatment apparatus with an intermediate electrode, comprising a preparation apparatus (1), characterized in that: the device is characterized in that a sodium hydroxide inlet pipe (2) is fixedly connected to the left side of the upper end of a preparation device (1), a sulfuric acid inlet pipe (3) is fixedly connected to the right side of the upper end of the preparation device (1), a phenol discharge port (4) is fixedly connected to the upper end of the preparation device (1) and the right side of the sodium hydroxide inlet pipe (2), a carbon dioxide conveying pipe (5) is fixedly connected to the middle of the lower end of the preparation device (1), a distillation pipe (6) is fixedly connected to the upper end of the preparation device (1) and the right side of the phenol discharge port (4), a cooling device (7) is fixedly connected to the lower end of the distillation pipe (6), a filtering and collecting device (8) is arranged under the cooling device (7), a filtering and discharging pipe (9) is fixedly connected to the lower end of the filtering and collecting device (8), and, the lower end of the return pipe (10) is fixedly connected with a recovery device (11), the left side and the right side of the interior of the recovery device (11) are respectively and fixedly provided with a positive electrode plate (12) and a negative electrode plate (13), an intermediate electrode plate (14) is arranged between the positive electrode plate (12) and the negative electrode plate (13) and inside the recovery device (11), and an anion-cation exchange membrane (15) is arranged between the intermediate electrode plate (14) and the positive electrode plate (12) and between the intermediate electrode plate (14) and the negative electrode plate (13).
2. An electrodialysis water treatment apparatus with an intermediate electrode according to claim 1, wherein: the carbon dioxide conveying pipe (5) is arranged at the lower part of the preparation device (1).
3. An electrodialysis water treatment apparatus with an intermediate electrode according to claim 1, wherein: the inside fixed mounting of filtering collection device (8) has filter paper layer (801), and through-hole (802) have been seted up to the lower extreme of filtering collection device (8).
4. An electrodialysis water treatment apparatus with an intermediate electrode according to claim 1, wherein: the return pipe (10) is inclined and the lower end of the return pipe is provided with a pipe orifice.
5. An electrodialysis water treatment apparatus with an intermediate electrode according to claim 1, wherein: the diameter of the lower end of the return pipe (10) is larger than the diameter of the upper end of the return pipe (10) and the diameter of the filtering discharge pipe (9).
6. An electrodialysis water treatment apparatus with an intermediate electrode according to claim 1, wherein: the left side and the right side of the lower end of the recovery device (11) are respectively and fixedly connected with a first acidic solution pipeline (1101), a first alkaline solution pipeline (1102), a second acidic solution pipeline (1103) and a second alkaline solution pipe (1104).
7. An electrodialysis water treatment apparatus with an intermediate electrode according to claim 1, wherein: the positive electrode plate (12) and the negative electrode plate (13) and the middle electrode plate (14) are kept horizontal and have the same height.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910839944.0A CN110550707A (en) | 2019-09-06 | 2019-09-06 | Electrodialysis water treatment facilities with middle electrode |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910839944.0A CN110550707A (en) | 2019-09-06 | 2019-09-06 | Electrodialysis water treatment facilities with middle electrode |
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| CN110550707A true CN110550707A (en) | 2019-12-10 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112844050A (en) * | 2020-12-31 | 2021-05-28 | 平湖爱之馨环保科技有限公司 | Electrolytic electrodialysis cell |
| CN115196724A (en) * | 2022-09-19 | 2022-10-18 | 欣格瑞（山东）环境科技有限公司 | Integrated desalting device adopting exchange electrode electrochemical composite ion replacement and implementation method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112844050A (en) * | 2020-12-31 | 2021-05-28 | 平湖爱之馨环保科技有限公司 | Electrolytic electrodialysis cell |
| CN115196724A (en) * | 2022-09-19 | 2022-10-18 | 欣格瑞（山东）环境科技有限公司 | Integrated desalting device adopting exchange electrode electrochemical composite ion replacement and implementation method thereof |
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Application publication date: 20191210 |