CN111118525A - Electrolytic tank suitable for pressurizing circulating pump shell and working method thereof - Google Patents
Electrolytic tank suitable for pressurizing circulating pump shell and working method thereof Download PDFInfo
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- CN111118525A CN111118525A CN202010094603.8A CN202010094603A CN111118525A CN 111118525 A CN111118525 A CN 111118525A CN 202010094603 A CN202010094603 A CN 202010094603A CN 111118525 A CN111118525 A CN 111118525A
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- circulating pump
- working
- gas
- working cavity
- electrolytic cell
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B1/00—Electrolytic production of inorganic compounds or non-metals
- C25B1/01—Products
- C25B1/02—Hydrogen or oxygen
- C25B1/04—Hydrogen or oxygen by electrolysis of water
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B15/00—Operating or servicing cells
- C25B15/08—Supplying or removing reactants or electrolytes; Regeneration of electrolytes
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25B—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES FOR THE PRODUCTION OF COMPOUNDS OR NON-METALS; APPARATUS THEREFOR
- C25B9/00—Cells or assemblies of cells; Constructional parts of cells; Assemblies of constructional parts, e.g. electrode-diaphragm assemblies; Process-related cell features
- C25B9/17—Cells comprising dimensionally-stable non-movable electrodes; Assemblies of constructional parts thereof
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/36—Hydrogen production from non-carbon containing sources, e.g. by water electrolysis
Abstract
The invention relates to an electrolytic cell suitable for pressurizing the shell of a circulating pump, comprising at least one working chamber; the gas-liquid separator is communicated with a hydrogen outlet or an oxygen outlet of the electrolytic cell; and the circulating pump is arranged in the working cavity. A method of operating an electrolytic cell comprising the steps of: step S1, arranging a circulating pump and a gas-liquid separator in the same working cavity; step S2, the gas-liquid separator separates the gas output from the electrolytic bath, and the separated gas is communicated with the working cavity to form positive pressure in the working cavity; and step S2, the circulating pump conveys the electrolyte to the electrolytic cell under the positive pressure environment. The circulating pump is operated in the working cavity at positive pressure, so that the internal and external pressure difference of the circulating pump is reduced, the leakage probability of the circulating pump is reduced, the circulating pump is operated in the positive pressure environment, and the circulating pump with low pressure bearing of the pump shell can be selected.
Description
Technical Field
The invention relates to an electrolytic cell suitable for pressurizing a shell of a circulating pump and a working method thereof.
Background
The electrolysis trough includes inlet, hydrogen export and oxygen export, and electrolytic reaction carries out in electrolyte inputs each electrolysis chamber of electrolysis trough from the inlet, and the hydrogen of separation and partial electrolyte export from the hydrogen export, and the oxygen of separation and partial electrolyte export from the oxygen export, and hydrogen and oxygen get into respective vapour and liquid separator respectively and carry out gas-liquid separation, gather hydrogen and oxygen, and the electrolyte that separates flows back to the stock solution intracavity.
The problems of the prior electrolytic cell are as follows: the circulating pump for inputting electrolyte into the electrolytic cell is directly arranged in the external air, when the circulating pump works, the internal pressure of the pump shell is far greater than the internal atmospheric pressure, in order to prevent the leakage of the pump shell, the pump shell needs to select the circulating pump with the pressure of hydrogen production pressure plus the sum of the lift of the circulating pump, such as 20-30 kilograms, so that the cost of the purchased circulating pump is high, and even if the circulating pump with the weight of the pump shell is selected, the leakage problem still exists easily.
Secondly, the structure of the conventional system for preparing gas by the electrolytic cell is complex, two gas-liquid separators, circulating pumps and the like are required to be arranged outside the electrolytic cell, and the gas-liquid separators and the circulating pumps are respectively connected with respective vent pipes and liquid through pipes, so that the external structure of the whole electrolytic cell system is complex.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the electrolytic tank overcomes the defects of the prior art, provides the electrolytic tank suitable for pressurizing the shell of the circulating pump, and solves the problem that the circulating pump is easy to leak due to the fact that the internal and external pressure difference of the circulating pump is large when the circulating pump of the conventional electrolytic tank is arranged in external air during operation.
The technical scheme adopted by the invention for solving the technical problems is as follows: an electrolytic cell adapted to pressurize a circulating pump housing, comprising
At least one working chamber;
the gas-liquid separator is arranged in the working cavity, is communicated with the hydrogen outlet or the oxygen outlet of the electrolytic cell and is suitable for communicating the separated hydrogen or oxygen to the working cavity so as to form positive pressure in the working cavity;
the circulating pump is arranged in the working cavity, is communicated with the liquid inlet of the electrolytic bath and is suitable for conveying electrolyte to the electrolytic bath.
Furthermore, the number of the working chambers is two, and the working chambers are respectively a first working chamber and a second working chamber;
the gas-liquid separator in the first working cavity is communicated with a hydrogen outlet of the electrolytic bath; the separated hydrogen is suitable for being input into the first working cavity, so that positive pressure is formed in the first working cavity;
and the gas-liquid separator in the second working cavity is communicated with the oxygen outlet of the electrolytic cell and is suitable for inputting the separated oxygen into the second working cavity so as to form positive pressure in the second working cavity.
Further, the electrolytic cell also comprises a liquid storage cavity which is suitable for storing electrolyte;
a liquid inlet of the circulating pump is communicated with the liquid storage cavity;
the liquid storage cavity is connected with a liquid replenishing pump and is suitable for replenishing water into the liquid storage cavity.
Further, the liquid outlet of the gas-liquid separator is communicated with the liquid storage cavity and is suitable for returning the separated electrolyte to the liquid storage cavity.
Furthermore, the electrolytic cell comprises working chambers, and each working chamber and the liquid storage chamber are formed by separating the working chambers.
Furthermore, a liquid level sensor is arranged in the liquid storage cavity, and the liquid supplementing pump is suitable for supplementing water into the liquid storage cavity according to signals of the liquid level sensor.
Further, the electrolytic chamber is provided at an end side of the electrolytic bath.
Further, the electrolytic bath is applied to an electrode reaction device.
In yet another aspect, a method of operating an electrolytic cell, comprising the steps of:
step S1, arranging a circulating pump and a gas-liquid separator in the same working cavity;
step S2, the gas-liquid separator separates the gas output from the electrolytic bath, and the separated gas is input into the working cavity to form positive pressure in the working cavity;
and step S2, the circulating pump conveys the electrolyte to the electrolytic cell under the positive pressure environment.
The invention has the beneficial effects that:
the invention provides an electrolytic cell, wherein a circulating pump works in a working cavity at positive pressure, so that the internal and external pressure difference of the circulating pump is reduced, the leakage probability of the circulating pump is reduced, the circulating pump works in the positive pressure environment, the circulating pump with low pressure bearing of a pump shell can be selected, the traditional pump shell of 20-30 kg is changed into the traditional pump shell of 3-5 kg, and the cost of the circulating pump is greatly reduced.
Secondly, the structure of the whole electrolytic cell gas making system is optimized; the gas-liquid separator and the circulating pump are arranged in the same working cavity, and the working chamber is arranged at the end side of the electrolytic cell, so that the whole liquid inlet and outlet pipeline is shortened, and the structure of an electrolytic cell system is optimized.
Drawings
The invention is further described below with reference to the accompanying drawings.
FIG. 1 is a schematic view of an electrolytic cell according to an embodiment;
FIG. 2 is a schematic view of an electrolytic cell according to a second embodiment;
FIG. 3 is a schematic view of two cells with a single working chamber;
the device comprises an electrolytic cell 1, an electrolytic cell 2, a working cavity 3, a gas-liquid separator 4, a circulating pump 5, a liquid storage cavity 6 and a liquid supplementing pump.
Detailed Description
The invention will now be further described with reference to specific examples. These drawings are simplified schematic diagrams only illustrating the basic structure of the present invention in a schematic manner, and thus show only the constitution related to the present invention.
Example one
As shown in fig. 1, an electrolytic cell 1 suitable for pressurizing the external shell of a circulation pump 4 comprises at least one working chamber 2;
a gas-liquid separator 3, wherein the gas-liquid separator 3 is communicated with a hydrogen outlet or an oxygen outlet of the electrolytic cell 1 and is suitable for communicating the separated hydrogen or oxygen into the working cavity 2 so as to form positive pressure in the working cavity 2 (the positive pressure in the drawing indicates that the cavity is positive pressure);
the circulating pump 4 is communicated with the liquid inlet of the electrolytic bath 1 and is suitable for conveying electrolyte to the electrolytic bath 1;
and the circulating pump 4 is arranged in the working cavity 2, so that the shell of the circulating pump 4 bears the gas pressure in the working cavity 2.
Preferably, the gas-liquid separator 3 is arranged in the working cavity 2, so that the structure of the whole system is optimized, and at the moment, the gas-liquid separator 3 arranged in the working cavity 2 only needs to be of a machine type with a smaller structure.
Preferably, the electrolytic cell 1 further comprises a liquid storage chamber 5 adapted to store an electrolyte; a liquid inlet of the circulating pump 4 is communicated with the liquid storage cavity 5; the liquid storage cavity 5 is connected with a liquid replenishing pump 6 and is suitable for replenishing water into the liquid storage cavity 5. The water replenishing pump replenishes electrolyte according to the liquid level in the liquid storage cavity 5, so that the liquid level in the liquid storage cavity 5 is controlled at a fixed position.
Preferably, the liquid outlet of the gas-liquid separator 3 is communicated with the liquid storage cavity 5, and the separated electrolyte is suitable for flowing back to the liquid storage cavity 5, so that the separated electrolyte is fully utilized.
Preferably, for further optimizing the structure, the electrolytic cell 1 comprises working chambers, and each working chamber 2 and the liquid storage chamber 5 are formed by separating the working chambers. Therefore, the electrolyte can be stored in the whole working chamber, the circulating pump 4 and the gas-liquid separator 3 are arranged, the structure is more simplified compared with the traditional complicated pipeline layout, and only one working chamber is provided when viewed from the outside.
Preferably, a liquid level sensor is arranged in the liquid storage cavity 5, and the liquid supplementing pump 6 is suitable for supplementing water into the liquid storage cavity 5 according to signals of the liquid level sensor. The selection of the liquid level sensor and the manner of fluid infusion belong to the conventional technical means in the field, and are not described herein.
Preferably, the electrolytic chamber is arranged at the end side of the electrolytic bath 1, and the design can reduce the use of a liquid passing pipe and a gas passing pipe, so that the structure is more simplified.
In this embodiment, gas-liquid separator 3 carries the hydrogen or the oxygen of separation in working chamber 2, makes working chamber 2 form the malleation, and this malleation is applyed on circulating pump 4 shell, has reduced circulating pump 4's inside and outside pressure differential, reduces the risk that the pump case leaked, also can select the lighter circulating pump 4 of pump case simultaneously to reduce cost.
During the operation, circulating pump 4 reacts in electrolyte input electrolysis trough 1, export hydrogen (smuggle partial electrolyte secretly) gets into vapour and liquid separator 3 and separates, the working chamber 2 is filled to the hydrogen of separation, so that form the malleation in the working chamber 2, the internal and external pressure differential reduces after 4 shells of circulating pump in the working chamber 2 bear this malleation, the electrolyte of vapour and liquid separator 3 separation flows back and recycles in stock solution chamber 5, the hydrogen in the working chamber 2 outwards exports to the hydrogen storage tank through the outlet duct on the working chamber 2, the separation flow of above for hydrogen, the separation flow of oxygen is the same with the flow of hydrogen, only oxygen need accomplish this operation in another one working chamber 2, hydrogen and oxygen can not separate in same working chamber 2.
Example two
The present embodiment is based on the first embodiment, and is further improved on the basis of the first embodiment.
As shown in figure 2, the number of the working chambers 2 of the electrolytic cell 1 is two, namely a first working chamber and a second working chamber; the gas-liquid separator 3 in the first working cavity is communicated with a hydrogen outlet of the electrolytic bath 1; is suitable for inputting the separated hydrogen into the first working cavity so as to form positive pressure in the first working cavity (the positive pressure in the figure indicates that the cavity is positive);
the gas-liquid separator 3 in the second working cavity is communicated with the oxygen outlet of the electrolytic cell 1 and is suitable for inputting the separated oxygen into the second working cavity so as to form positive pressure in the second working cavity (the positive pressure in the drawing indicates that the cavity is positive pressure).
In the actual operation process, the circulating pump 4 in the first working cavity and the circulating pump 4 in the second working cavity only need to work one, and the other can be used for standby.
In this embodiment, the first working chamber, the second working chamber and the liquid storage chamber 5 are located in the same working chamber, and the working chamber is disposed on the end wall of the electrolytic cell 1.
A working chamber can be configured for one electrolytic cell 1, or two electrolytic cells 1 can be configured for one working chamber, as shown in fig. 3, the working chamber is arranged between the two electrolytic cells 1, two circulating pumps 4 in the working chamber respectively convey electrolyte to the two electrolytic cells 1, hydrogen output by the two electrolytic cells 1 enters a gas-liquid separator 3 in a first working cavity, and oxygen output by the two electrolytic cells 1 enters a gas-liquid separator 3 in a second working cavity.
EXAMPLE III
A method of operating an electrolytic cell comprising the steps of:
step S1, arranging a circulating pump 4 and a gas-liquid separator 3 in the same working chamber 2;
step S2, the gas-liquid separator 3 separates the gas output from the electrolytic bath 1, and the separated gas is input into the working chamber 2 so that positive pressure is formed in the working chamber 2 (in the drawing, "+" indicates that the chamber is positive pressure);
in step S2, the circulation pump 4 feeds the electrolyte to the electrolytic cell 1 in the positive pressure environment.
The circulating pump 4 operates in the working cavity 2 at positive pressure, so that the internal and external pressure difference of the circulating pump 4 is reduced, the leakage probability of the circulating pump 4 is reduced, the circulating pump 4 with low pressure bearing capacity can be selected by placing the circulating pump 4 in the positive pressure environment, the existing pump shell of 3-5 kg is changed from the original pump shell of 20-30 kg, and the cost of the circulating pump 4 is greatly reduced.
Example four
Based on the electrolytic cell of the first embodiment, the electrolytic cell can be applied to an electrode reaction device.
In light of the foregoing description of the preferred embodiment of the present invention, many modifications and variations will be apparent to those skilled in the art without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the specification, and must be determined according to the scope of the claims.
Claims (10)
1. An electrolytic tank suitable for pressurizing a shell of a circulating pump is characterized by comprising
At least one working chamber;
the gas-liquid separator is arranged in the working cavity, is communicated with the hydrogen outlet or the oxygen outlet of the electrolytic cell and is suitable for communicating the separated hydrogen or oxygen to the working cavity so as to form positive pressure in the working cavity;
the circulating pump is arranged in the working cavity, is communicated with the liquid inlet of the electrolytic cell and is suitable for conveying electrolyte to the electrolytic cell.
2. The electrolyzer of claim 1 wherein the number of working chambers is two, a first working chamber and a second working chamber;
the gas-liquid separator in the first working cavity is communicated with a hydrogen outlet of the electrolytic bath; the separated hydrogen is suitable for being input into the first working cavity, so that positive pressure is formed in the first working cavity;
and the gas-liquid separator in the second working cavity is communicated with the oxygen outlet of the electrolytic cell and is suitable for inputting the separated oxygen into the second working cavity so as to form positive pressure in the second working cavity.
3. Electrolysis cell adapted to pressurise a circulation pump housing according to claim 1 or 2,
the electrolytic cell also comprises a liquid storage cavity which is suitable for storing electrolyte;
a liquid inlet of the circulating pump is communicated with the liquid storage cavity;
the liquid storage cavity is connected with a liquid replenishing pump and is suitable for replenishing water into the liquid storage cavity.
4. The electrolytic cell of claim 3 wherein the liquid outlet of the gas-liquid separator is in communication with the reservoir chamber and adapted to return separated electrolyte to the reservoir chamber.
5. The electrolyzer of claim 4 adapted to pressurize a circulating pump housing, wherein the electrolyzer comprises working chambers, each working chamber and reservoir chamber being separated by a working chamber.
6. The electrolyzer of claim 4 adapted to pressurize the circulating pump housing wherein a level sensor is disposed in the reservoir chamber and the fluid replacement pump is adapted to replenish fluid in the reservoir chamber based on a signal from the level sensor.
7. Electrolysis cell adapted to pressurise a circulation pump housing according to claim 5, wherein said electrolysis chamber is arranged at an end side of the electrolysis cell.
8. The electrolyzer adapted to pressurize the circulating pump housing of claim 5 wherein the number of electrolyzers is two;
the working chamber is arranged between the two electrolytic tanks, and the two circulating pumps in the working chamber are respectively communicated with the liquid inlets of the two electrolytic tanks;
the hydrogen outlets of the two electrolytic tanks are communicated with the air inlet of the gas-liquid separator in the first working cavity;
the oxygen outlets of the two electrolytic tanks are communicated with the air inlet of the gas-liquid separator in the second working cavity.
9. The electrolyzer of claim 1 adapted to pressurize the circulating pump housing,
the electrolytic cell is applied to an electrode reaction device.
10. A working method of an electrolytic cell is characterized by comprising the following steps:
step S1, arranging a circulating pump and a gas-liquid separator in the same working cavity;
step S2, the gas-liquid separator separates the gas output from the electrolytic bath, and the separated gas is input into the working cavity to form positive pressure in the working cavity;
and step S3, the circulating pump conveys the electrolyte to the electrolytic cell under the positive pressure environment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010094603.8A CN111118525B (en) | 2020-02-16 | 2020-02-16 | Electrolytic tank suitable for pressurizing circulating pump shell and working method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010094603.8A CN111118525B (en) | 2020-02-16 | 2020-02-16 | Electrolytic tank suitable for pressurizing circulating pump shell and working method thereof |
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| CN111118525A true CN111118525A (en) | 2020-05-08 |
| CN111118525B CN111118525B (en) | 2023-08-15 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114000173A (en) * | 2021-11-29 | 2022-02-01 | 广东氢时代健康产业科技有限公司 | Large-flow oxyhydrogen machine |
| CN116024609A (en) * | 2022-12-26 | 2023-04-28 | 北京科技大学 | Electrolytic cell starting system, method, device and storage medium |
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| CN2086335U (en) * | 1991-01-31 | 1991-10-09 | 临清市石油机械厂 | Differential pressure seal device of centrifugal pump |
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| CN203035518U (en) * | 2013-02-01 | 2013-07-03 | 天津市津能双鹤热力设备有限公司 | Low-pressure protection device of circulating pump |
| CN105697418A (en) * | 2016-01-25 | 2016-06-22 | 崔华 | High-pressure-resistant circulating pump for reverse osmosis |
| CN105947417A (en) * | 2016-06-28 | 2016-09-21 | 苏州华徕光电仪器有限公司 | Photoelectric instrument packing case provided with automatic drying system |
| WO2018018714A1 (en) * | 2016-07-27 | 2018-02-01 | 王鼎兴 | Pump for shell-and-tube heat exchanger |
| CN207391569U (en) * | 2017-10-18 | 2018-05-22 | 安简（北京）科技有限公司 | A kind of high-purity hydrogen generator |
| CN212451654U (en) * | 2020-02-16 | 2021-02-02 | 中科院大连化学物理研究所张家港产业技术研究院有限公司 | Electrolytic tank suitable for pressurizing circulating pump shell |
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2020
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| SU1506166A1 (en) * | 1987-06-15 | 1989-09-07 | Белорусский Политехнический Институт | Positive displacement pump |
| CN2086335U (en) * | 1991-01-31 | 1991-10-09 | 临清市石油机械厂 | Differential pressure seal device of centrifugal pump |
| CN2619950Y (en) * | 2003-05-03 | 2004-06-09 | 董晓白 | Full procedure integrated hydrogen-oxygen machine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114000173A (en) * | 2021-11-29 | 2022-02-01 | 广东氢时代健康产业科技有限公司 | Large-flow oxyhydrogen machine |
| CN116024609A (en) * | 2022-12-26 | 2023-04-28 | 北京科技大学 | Electrolytic cell starting system, method, device and storage medium |
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| Publication number | Publication date |
|---|---|
| CN111118525B (en) | 2023-08-15 |
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