CN215479934U - A device for preparing sodium hypochlorite by utilizing chlorine gas produced by electrolysis of chlorine-containing waste liquid - Google Patents
A device for preparing sodium hypochlorite by utilizing chlorine gas produced by electrolysis of chlorine-containing waste liquid Download PDFInfo
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- CN215479934U CN215479934U CN202121177651.XU CN202121177651U CN215479934U CN 215479934 U CN215479934 U CN 215479934U CN 202121177651 U CN202121177651 U CN 202121177651U CN 215479934 U CN215479934 U CN 215479934U
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Abstract
本实用新型公开了一种利用电解含氯废液产生的氯气制备次氯酸钠的装置，包括电解槽和吸收槽，所述电解槽顶部设置第一排风罩，所述第一排风罩通过第一排风管道与吸收槽连通，所述第一排风管道上设置有第一风机；吸收槽顶部设置第二排风罩，所述第二排风罩通过第二排风管道与电解槽连通，所述第二排风管道上设置有第二风机；该装置具有利用电解含氯废液产生的氯气制备次氯酸钠的功能，同时该结构设计易于消除电解过程产生的氯气和氢气危害，具有较好的应用前景。
The utility model discloses a device for preparing sodium hypochlorite by utilizing chlorine gas generated by electrolysis of chlorine-containing waste liquid, which comprises an electrolytic cell and an absorption cell. The exhaust duct is communicated with the absorption tank, and a first fan is arranged on the first exhaust duct; the top of the absorption tank is provided with a second exhaust hood, and the second exhaust hood is communicated with the electrolytic tank through the second exhaust duct, The second exhaust duct is provided with a second fan; the device has the function of preparing sodium hypochlorite by using the chlorine generated by the electrolysis of chlorine-containing waste liquid, and at the same time, the structural design is easy to eliminate the hazards of chlorine and hydrogen generated in the electrolysis process, and has better performance. application prospects.
Description
Technical Field
The utility model belongs to the technical field of wastewater treatment, and particularly relates to a device for preparing sodium hypochlorite by using chlorine generated by electrolyzing chlorine-containing waste liquid.
Background
Sodium hypochlorite is a strong oxidant and disinfectant, and has wide application in daily life and industrial fields. It is usually produced by diaphragm-free electrolysis of dilute solutions of industrial salts or seawater, which are widely and inexpensively available. Meanwhile, with the social development, chlorine-containing wastewater has more and more sources, such as power plant wastewater, mine water, reverse osmosis concentrated water and the like, and the chlorine-containing wastewater is difficult to be treated by conventional biotechnology to reach the standard due to high salinity. Therefore, the technology for electrochemically treating the chlorine-containing wastewater shows certain advantages, and on one hand, the salinity in the wastewater can be used as electrolyte in the electrochemical process to efficiently remove refractory organic matters in the wastewater. On the other hand, however, the electrolysis process also produces large amounts of chlorine gas with pungent odor and toxic effects, as well as flammable and explosive hydrogen gas. The conventional electrochemical device discharges the generated chlorine and hydrogen as exhaust gas, which may not only pollute the environment, but also cause waste of resources and energy.
Therefore, there is a need for innovative design of such electrochemical devices to reduce the emission of such exhaust gases and achieve comprehensive utilization of the exhaust gases, and to be suitable for engineering scale-up.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems in the prior art, the utility model provides a device for preparing sodium hypochlorite by using chlorine generated by electrolyzing chlorine-containing waste liquid, which has the advantages of simple structure, convenient use, obvious function and easy engineering amplification.
In order to achieve the purpose, the utility model provides the following technical scheme: a device for preparing sodium hypochlorite by using chlorine generated by electrolyzing chlorine-containing waste liquid comprises an electrolytic bath and an absorption tank, wherein a first exhaust hood is arranged at the top of the electrolytic bath and is communicated with the absorption tank through a first exhaust pipeline, and a first fan is arranged on the first exhaust pipeline; the absorption tank top sets up the second exhaust hood, the second exhaust hood passes through second exhaust duct and electrolysis trough intercommunication, be provided with the second fan on the second exhaust duct.
Furthermore, the first exhaust hood is arranged above the top of the electrolytic cell through a supporting device or a hanging device, and a gap is formed between the first exhaust hood and the electrolytic cell.
Furthermore, the second exhaust hood is arranged above the top of the absorption tank through a supporting device or a hanging device, and a gap is formed between the second exhaust hood and the absorption tank.
Furthermore, an aeration hole is formed in the bottom of the electrolytic tank, and a second exhaust pipeline extends into the electrolytic tank from the aeration hole.
Furthermore, an aeration head is arranged in the electrolytic tank, and the second exhaust pipeline is communicated with the aeration head.
Further, an electrode assembly is arranged in the electrolytic cell, and the aeration head is arranged at the lower part of the electrode assembly.
Furthermore, the bottom of the absorption tank is provided with an aeration hole, and the second exhaust pipe extends into the absorption tank through the aeration hole.
Further, an aeration head is arranged in the absorption tank, and the first exhaust pipe is communicated with the aeration head.
Further, a sodium hydroxide solution is arranged in the absorption tank.
Further, the electrolytic cell is made of one of polypropylene, polyethylene and glass fiber reinforced plastic.
Compared with the prior art, the utility model has at least the following beneficial effects:
the utility model provides a device for preparing sodium hypochlorite by using chlorine generated by electrolyzing chlorine-containing waste liquid, wherein the chlorine-containing waste water can be conveniently electrolyzed in an electrolytic bath, and the chlorine-containing waste gas generated by electrolysis is directly led into an absorption tank for absorption by using a first fan through arranging a first exhaust hood and a first exhaust pipe above the electrolytic bath, so that the pollution of the chlorine to the atmospheric environment is avoided, the sodium hypochlorite can be prepared in the absorption tank, and the waste of resources is reduced;
the second exhaust hood is arranged above the absorption tank, and under the action of the second fan, the gas and air which are not absorbed in the absorption tank are introduced into the electrolytic tank again through the second exhaust pipe by the second exhaust hood, so that the oxygen content in the electrolyte is increased, the amount of hydrogen generated by a cathode is reduced, the danger of explosion caused by excessive hydrogen can be avoided, and meanwhile, the voltage of an electrolytic system can be reduced, and the energy consumption of the electrolytic system is reduced.
Drawings
FIG. 1 is a schematic diagram of an apparatus for producing sodium hypochlorite by using chlorine gas generated by electrolyzing a chlorine-containing waste liquid.
In the drawings: 1-an electrolytic cell; 21-a first exhaust hood; 22-a second exhaust hood; 3-a first fan; 4-a second fan; 41-a first exhaust duct; 42-a second exhaust duct; 5-an aeration head; 6-an absorption tank; 7-aeration holes; 8-electrode assembly.
Detailed Description
The utility model is further described with reference to the following figures and detailed description.
As shown in fig. 1, the present invention provides a device for preparing sodium hypochlorite by using chlorine generated by electrolyzing chlorine-containing waste liquid, comprising an electrolytic cell 1 and an absorption tank 6, wherein a first exhaust hood 21 is arranged above the top of the electrolytic cell 1, a gap is arranged between the first exhaust hood 21 and the electrolytic cell 1, the first exhaust hood 21 is communicated with the absorption tank 6 through a first exhaust duct 41, and a first fan 3 is arranged on the first exhaust duct 41; a second exhaust hood 22 is arranged above the top of the absorption tank 6, a gap is formed between the second exhaust hood 22 and the absorption tank 6, the second exhaust hood 22 is communicated with the electrolytic tank 1 through a second exhaust pipeline 42, and a second fan 4 is arranged on the second exhaust pipeline 42;
preferably, the first hood 21 and the second hood 22 are respectively above the tops of the electrolytic cell 1 and the absorption tank 6 by means of supporting means or suspension means.
Preferably, the supporting means may be a plurality of supporting columns, and fixing the plurality of supporting columns around the electrolytic bath 1 may support the first exhaust hood 21 and the second exhaust hood 22 above the tops of the electrolytic bath 1 and the absorption bath 6, respectively.
Preferably, the suspension means may be a shop roof suspension by which the first exhaust hood 21 and the second exhaust hood 22 are suspended above the tops of the electrolytic bath 1 and the absorption tank 6, respectively.
Preferably, chlorine-containing waste gas obtained after the electrolysis of the chlorine-containing waste liquid in the electrolytic cell 1 is discharged into the absorption tank 6 through the first exhaust duct 41 by the first fan 3, and simultaneously, the gas which is not absorbed in the absorption tank 6 and a part of the air sucked from the outside of the second exhaust hood 22 by the second fan 4 are reintroduced into the electrolytic cell 1 through the second exhaust duct 42 by the second fan 4.
Wherein an electrode component 8 is arranged in the electrolytic tank 1 to realize the function of electrolyzing the chlorine-containing wastewater; the bottom of the electrolytic tank 1 is provided with an aeration hole 7, and a second exhaust pipeline 42 extends into the electrolytic tank 1 from the aeration hole 7 and is communicated with the aeration head 5;
preferably, the aeration head 5 is located below the electrode assembly 8 and is used for blowing off chlorine-containing waste gas generated by the electrode assembly 8 by aerating a mixture of air or unabsorbed clean gas into the electrolytic bath 1.
Preferably, the chlorine-containing waste gas specifically includes chlorine, carbon dioxide, oxygen, hydrogen, and the like.
The absorption tank 6 is also provided with an aeration head 5, the bottom of the absorption tank is provided with an aeration hole 7, the first exhaust pipe 41 is communicated with the aeration head 5 through the aeration hole 7, chlorine-containing waste gas generated by electrolyzing chlorine-containing waste liquid is led into the absorption tank 6, and the absorption tank 6 is mainly filled with a sodium hydroxide solution, so that chlorine in the chlorine-containing waste gas can be efficiently absorbed to generate sodium hypochlorite.
Preferably, the electrolytic cell 1 is made of plastic material such as polypropylene, polyethylene, glass fiber reinforced plastic, etc.
After the electrolytic bath 1 electrolyzes the chlorine-containing waste liquid, the obtained chlorine-containing waste gas enters the first exhaust pipeline 41 through the first exhaust hood 21 under the action of the first fan 3, then enters the absorption tank 6 through the aeration head 5 in the absorption tank 6, and chlorine in the chlorine-containing waste gas reacts with the sodium hydroxide solution in the absorption tank 6 to generate sodium hypochlorite; the absorption tank 6 does not absorb clean gas and air and enters the second exhaust duct 42 through the second exhaust hood 22 under the action of the second fan 4, and then the gas and the air are introduced into the electrolyte of the electrolytic tank 1 through the aeration head 5 in the electrolytic tank 1, and the amount of hydrogen generated by the cathode can be reduced under the action of oxygen in the air, and meanwhile, the voltage of an electrolytic system is reduced, so that the energy consumption of the electrolytic system is reduced, and chlorine generated by the anode can be efficiently blown out of the electrolytic tank 1.
The unabsorbed clean gas may include chlorine, carbon dioxide, hydrogen, and other gases;
therefore, the device realizes a plurality of functions of electrolyzing the chlorine-containing wastewater, absorbing the discharged chlorine to prepare sodium hypochlorite, reducing the energy consumption of the system, reducing the hydrogen generation amount and the like based on a simple structure, prevents the discharge of waste gas while treating the wastewater, generates good environmental benefit, reduces the power consumption of an electrolysis system, and generates a sodium hypochlorite byproduct to create certain economic benefit.
Claims (10)
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121177651.XU CN215479934U (en) | 2021-05-28 | 2021-05-28 | A device for preparing sodium hypochlorite by utilizing chlorine gas produced by electrolysis of chlorine-containing waste liquid |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202121177651.XU CN215479934U (en) | 2021-05-28 | 2021-05-28 | A device for preparing sodium hypochlorite by utilizing chlorine gas produced by electrolysis of chlorine-containing waste liquid |
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| CN215479934U true CN215479934U (en) | 2022-01-11 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115367854A (en) * | 2022-08-30 | 2022-11-22 | 盐城工学院 | Method for treating chlorine-containing waste gas and recycling organic wastewater |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115367854A (en) * | 2022-08-30 | 2022-11-22 | 盐城工学院 | Method for treating chlorine-containing waste gas and recycling organic wastewater |
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