CN112630377A - Test system for simulating hydrogen removal separation effect in chlorine production by electrolysis - Google Patents
Test system for simulating hydrogen removal separation effect in chlorine production by electrolysis Download PDFInfo
- Publication number
- CN112630377A CN112630377A CN202011350475.5A CN202011350475A CN112630377A CN 112630377 A CN112630377 A CN 112630377A CN 202011350475 A CN202011350475 A CN 202011350475A CN 112630377 A CN112630377 A CN 112630377A
- Authority
- CN
- China
- Prior art keywords
- circulating water
- inlet
- outlet
- pipeline
- ejector
- 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.)
- Granted
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/34—Purifying; Cleaning
-
- 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Pathology (AREA)
- Physics & Mathematics (AREA)
- Immunology (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Combustion & Propulsion (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Biomedical Technology (AREA)
- Molecular Biology (AREA)
- Electrolytic Production Of Non-Metals, Compounds, Apparatuses Therefor (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention provides a test system for simulating an intermediate dehydrogenation separation effect in chlorine production by electrolysis, which comprises a circulating water supply system, a pressurized dissolved air system, a first chlorine production device by electrolysis, an intermediate dehydrogenation device and a water and gas discharge and collection device, wherein the circulating water supply system comprises a circulating water inlet pipeline, a circulating water tank, a circulating water pump and a first ejector, and the pressurized dissolved air system comprises an air compressor, a dissolved air tank and a pressurizing pump. According to the test system for simulating the intermediate dehydrogenation separation effect in the electrolytic chlorine production, provided by the invention, the seawater in the circulating water tank is pumped into the dissolved air tank by the booster pump, and meanwhile, the air is conveyed into the dissolved air tank by the air compressor, so that the air is dissolved in the water to form the dissolved air water, and therefore, the process of generating hydrogen in the electrolytic chlorine production and the gas-liquid mixed flow state of the electrolytic solution are simulated, and the gas-liquid separation effect of the intermediate dehydrogenation device is conveniently verified.
Description
Technical Field
The invention relates to the technical field of gas-liquid separation, in particular to a test system for simulating the intermediate dehydrogenation separation effect in chlorine production by electrolysis.
Background
The sodium hypochlorite sterilization technology is widely applied to disinfection treatment of circulating cooling water of coastal power plants and ship ballast water. At present, the method of electrolyzing seawater or brine by an electrolytic chlorine production device to obtain a sodium hypochlorite solution is mostly adopted for on-site preparation, hydrogen is generated in the electrolytic process, and the hydrogen is taken as a byproduct in the electrolytic chlorine production process, so that on one hand, the hydrogen is required to be rapidly discharged out of the electrolytic chlorine production device because the hydrogen belongs to flammable and explosive dangerous gas; on the other hand, for large-scale electrolytic chlorine production equipment, the accumulation amount of hydrogen is gradually increased along with the progress of the electrolytic process, and the electrolytic efficiency is reduced due to excessive hydrogen amount, so most electrolytic chlorine production systems are provided with an intermediate hydrogen removal device to discharge the hydrogen generated in the electrolytic process out of the electrolytic chlorine production device in time so as to improve the electrolytic efficiency.
In the prior art, when the gas-liquid separation effect of the middle hydrogen removal device is tested, potential explosion danger exists due to the fact that a hydrogen collecting method is improper or a test system is not tight in sealing in the test process. Meanwhile, the middle hydrogen discharge device of the large-scale electrolytic chlorine production equipment needs to be operated for a long period to check the gas-liquid separation effect, and the electrolytic chlorine production equipment is operated for the long period, so that the energy consumption is high, the requirement on a plant power supply system is high, the production is often required to be coordinated and stopped for testing, and the normal production order is influenced. And the test seawater is often recycled, and in the test process, as the seawater is continuously electrolyzed by the electrolytic chlorine production device, the content of chloride ions in the electrolyzed seawater is gradually reduced, the amount of hydrogen generated by electrolysis is gradually reduced, and the gas-liquid separation effect of the intermediate dehydrogenation device cannot be effectively verified.
Disclosure of Invention
The invention aims to provide a test system for simulating an intermediate dehydrogenation separation effect in chlorine production by electrolysis, which aims to overcome the defects in the background art, can reduce the energy consumption and cost of the test, can effectively verify the gas-liquid separation effect of an intermediate dehydrogenation device, and can reduce the risk of the test.
The invention provides a test system for simulating the middle hydrogen removal separation effect in chlorine production by electrolysis, which comprises a circulating water supply system, a pressurized gas dissolving system, a first chlorine production device by electrolysis, a middle hydrogen removal device and a water and gas collecting device, wherein the circulating water supply system comprises a circulating water inlet pipeline, a circulating water tank, a circulating water pump and a first ejector, and the pressurized gas dissolving system comprises an air compressor, a gas dissolving tank and a pressure pump;
the circulating water inlet pipeline is communicated with an inlet of the circulating water tank, an outlet of the circulating water tank is divided into two paths, one path of the circulating water tank is communicated with an inlet of the circulating water pump, an outlet of the circulating water pump is communicated with a working fluid inlet of the first ejector, and a working fluid outlet of the first ejector is communicated with an inlet of the first electrolytic chlorine production device; the other path of the circulating water is communicated with an inlet of the pressurizing pump, and an outlet of the pressurizing pump is communicated with a circulating water inlet of the dissolved air tank; the outlet of the air compressor is communicated with the air inlet of the dissolved air tank, and the dissolved air water outlet of the dissolved air tank is communicated with the injection suction port of the first ejector;
the outlet of the first electrolytic chlorine production device is communicated with the dissolved gas water inlet of the intermediate dehydrogenation device, the air outlet of the intermediate dehydrogenation device is communicated with the inlet of the water drainage and collection device, and the circulating water outlet of the intermediate dehydrogenation device is communicated with the inlet of the circulating water tank.
Further, the circulating water supply system further comprises a circulating water flow control device, wherein the circulating water flow control device comprises a first diaphragm valve and a first flow meter, the first diaphragm valve is arranged on a pipeline between the outlet of the circulating water pump and the working fluid inlet of the first ejector, and the first flow meter is arranged on a pipeline between the working fluid outlet of the first ejector and the inlet of the first electrolytic chlorine production device.
Further, the pressurization gas dissolving system also comprises a gas dissolving water flow control device, the gas dissolving water flow control device comprises a second diaphragm valve and a second flowmeter, and the second diaphragm valve and the second flowmeter are arranged on a pipeline between a gas dissolving water outlet of the gas dissolving tank and an injection suction port of the first ejector.
The circulating water supply system further comprises a second ejector, a working fluid inlet of the second ejector is communicated to a pipeline between an outlet of the circulating water pump and a working fluid inlet of the first ejector, a working fluid outlet of the second ejector is communicated with an inlet of the circulating water tank, and an injection suction port of the second ejector is communicated to a pipeline between a working fluid outlet of the first ejector and an inlet of the first chlorine electrolysis device.
Furthermore, a first switch valve is arranged on a pipeline before an injection suction port of the second ejector, a second switch valve is arranged on a pipeline before a working fluid inlet of the second ejector, and a third switch valve is arranged on a pipeline between a working fluid outlet of the first ejector and an inlet of the first electrolytic chlorine production device.
Furthermore, a second electrolytic hydrogen production device is arranged on a pipeline between a circulating water outlet of the middle hydrogen removal device and an inlet of the circulating water tank.
Furthermore, be equipped with first level gauge on the circulating water jar, first level gauge with the signal of telecommunication is connected between the control end of circulating water pump.
Furthermore, a second liquid level meter is arranged on the dissolved air tank, and the second liquid level meter is respectively in electric signal connection with the control end of the pressurizing pump and the control end of the air compressor.
Furthermore, a pressure transmitter is arranged on the dissolved air tank and is respectively in electric signal connection with the control end of the booster pump and the control end of the air compressor.
Further, the number of the first chlorine electrolysis devices is multiple, and the multiple first chlorine electrolysis devices are arranged in series.
Further, the circulating water inlet pipeline with be equipped with circulating water tank inlet valve on the pipeline between the entry of circulating water tank, the export of circulating water tank with be equipped with first circulating water tank outlet valve and force (forcing) pump inlet valve on the pipeline between the entry of force (forcing) pump in proper order, the export of force (forcing) pump with be equipped with force (forcing) pump outlet check valve and force (forcing) pump outlet valve on the pipeline between the circulating water inlet of dissolving the gas pitcher, the export of circulating water tank with be equipped with second circulating water tank outlet valve on the pipeline between the entry of circulating water pump, the export of circulating water pump with be equipped with circulating water pump outlet check valve and circulating water pump outlet valve on the pipeline between the working fluid entry of first sprayer, the circulating water export of middle dehydrogenation device with be equipped with the return water pipeline valve on the pipeline between the.
Furthermore, a decompression release device is arranged on a pipeline between a dissolved gas water outlet of the dissolved gas tank and an injection suction port of the first ejector.
The invention provides a test system for simulating the intermediate dehydrogenation separation effect in the electrolytic chlorine production, which utilizes a pressure pump to pressurize and pump seawater in a circulating water tank into a dissolved air tank, utilizes an air compressor to convey air into the dissolved air tank, so that the air is dissolved in water to form dissolved air water, utilizes a first ejector to suck the dissolved air water into a main pipeline, so that the dissolved air water and circulating water in the main pipeline are mixed and conveyed into a first electrolytic chlorine production device together, and controls the proportion of the circulating water and the dissolved air water through a circulating water flow control device and a dissolved air water flow control device, thereby simulating the process of generating hydrogen during the electrolytic chlorine production and the gas-liquid mixed flow state of an electrolytic solution. The gas-dissolving water releases partial air after entering the first electrolytic chlorine production device, and the process of releasing hydrogen in the electrolytic process of the first electrolytic chlorine production device is simulated by utilizing the gas-releasing process of the gas-dissolving water (one part of hydrogen generated in the electrolytic process is dissolved in water, and the other part of hydrogen escapes from water). After the gas-dissolved water enters the intermediate hydrogen removal device for gas-liquid separation, the circulating water is recycled back to the circulating water tank for reuse, the air is collected by the water drainage and gas collection device, and the gas-liquid separation efficiency of the intermediate hydrogen removal device can be obtained by comparing and calculating the amount of the air entering the test system and the amount of the air collected after separation, so that the gas-liquid separation effect of the intermediate hydrogen removal device is verified.
The test system for simulating the intermediate dehydrogenation separation effect in the chlorine preparation by electrolysis provided by the invention has the advantages that:
1. the whole test process does not generate hydrogen, and the test safety is improved.
2. In the test process, the electrolytic chlorine production device does not need to be electrified, and the seawater is not electrolyzed, so that the test seawater can be repeatedly utilized. Meanwhile, the test energy consumption is greatly reduced, the requirements on a test power distribution system are reduced, and the gas-liquid separation effect of the intermediate dehydrogenation device can be tested for a long period.
3. In the test process, seawater is not electrolyzed, and the air content in the dissolved air water is always kept stable, so that the gas-liquid separation effect of the intermediate dehydrogenation device can be effectively verified. In the prior art, as the seawater is continuously electrolyzed by the electrolytic chlorine production device, the content of chloride ions in the electrolyzed seawater is gradually reduced, the amount of hydrogen generated by electrolysis is gradually reduced, and the gas-liquid separation effect of the intermediate dehydrogenation device cannot be effectively verified.
4. The test system has universality on different intermediate dehydrogenation devices, the system equipment is high in reutilization, and the test cost is reduced.
5. The whole test system is an independent system, does not need to depend on equipment on a production line, and does not influence the normal production order.
Drawings
FIG. 1 is a schematic structural diagram of a test system for simulating the effect of hydrogen removal and separation in the process of producing chlorine by electrolysis according to an embodiment of the present invention.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.
The terms of orientation, up, down, left, right, front, back, top, bottom, and the like (if any) referred to in the specification and claims of the present invention are defined by the positions of structures in the drawings and the positions of the structures relative to each other, only for the sake of clarity and convenience in describing the technical solutions. It is to be understood that the use of the directional terms should not be taken to limit the scope of the claims.
As shown in fig. 1, the test system for simulating the intermediate dehydrogenation separation effect in the electrolytic chlorine production provided by the embodiment of the invention is mainly used for solving the problems of poor continuity, low test safety and high requirement on a test power distribution system of the intermediate dehydrogenation test of the electrolytic chlorine production device, and can be used for repeatedly detecting the gas-liquid separation effect of the intermediate dehydrogenation device 5.
Specifically, the test system comprises a circulating water supply system 101, a pressurized dissolved gas system 102, a first chlorine electrolysis device 4a, an intermediate hydrogen removal device 5 and a water drainage and gas collection device 6. The circulating water supply system 101 comprises a circulating water inlet pipeline 40, a circulating water tank 1, a circulating water pump 2 and a first ejector 3, and the pressurizing and gas dissolving system 102 comprises an air compressor 8, a gas dissolving tank 7 and a pressurizing pump 9.
Further, a circulating water inlet pipeline 40 supplements seawater for the whole test system, the circulating water inlet pipeline 40 is communicated with an inlet of a circulating water tank 1, an outlet of the circulating water tank 1 is divided into two paths, one path is communicated with an inlet of a circulating water pump 2, an outlet of the circulating water pump 2 is communicated with a working fluid inlet of a first ejector 3, and a working fluid outlet of the first ejector 3 is communicated with an inlet of a first chlorine electrolysis device 4 a; the other path is communicated with the inlet of a booster pump 9, and the outlet of the booster pump 9 is communicated with the circulating water inlet of the dissolved air tank 7. The outlet of the air compressor 8 is communicated with the air inlet of the dissolved air tank 7, and the dissolved air water outlet of the dissolved air tank 7 is communicated with the injection suction port of the first ejector 3.
Further, the outlet of the first electrolytic chlorine production device 4a is communicated with the dissolved gas water inlet of the intermediate hydrogen removal device 5, the air outlet of the intermediate hydrogen removal device 5 is communicated with the inlet of the water drainage and collection device 6, and the circulating water outlet of the intermediate hydrogen removal device 5 is communicated with the inlet of the circulating water tank 1.
Further, in the present embodiment, the circulating water supply system 101 further includes a circulating water flow rate control means including a first diaphragm valve 27 and a first flow meter 29, the first diaphragm valve 27 is provided on a pipeline between the outlet of the circulating water pump 2 and the working fluid inlet of the first ejector 3, and the first flow meter 29 is provided on a pipeline between the working fluid outlet of the first ejector 3 and the inlet of the first electrolytic chlorine generating device 4 a. Of course, in other embodiments, the circulating water flow control device may have other structures, and is not limited herein.
Specifically, according to the reading of the first flowmeter 29, the flow rate of the circulating water in the main pipeline can be adjusted to a set value by adjusting the opening degree of the first diaphragm valve 27.
Further, the pressurized dissolved air system 102 further includes a dissolved air water flow control device, the dissolved air water flow control device includes a second diaphragm valve 21 and a second flow meter 22, and the second diaphragm valve 21 and the second flow meter 22 are disposed on a pipeline between the dissolved air water outlet of the dissolved air tank 7 and the injection suction port of the first injector 3. Of course, in other embodiments, the dissolved gas water flow control device may have other structures, and is not limited herein.
Specifically, according to the reading of the second flowmeter 22, the flow rate of the dissolved air water entering the main pipeline can be adjusted by adjusting the opening degree of the second diaphragm valve 21.
Specifically, the circulating water pump 2 is a power source for circulating water in the whole test system, and the circulating water is delivered to the first chlorine electrolysis device 4a through the circulating water pump 2. The seawater in the circulating water tank 1 is pressurized and pumped into the dissolved air tank 7 by the booster pump 9, and meanwhile, the air in the surrounding environment of the air compressor 8 is conveyed into the dissolved air tank 7 by the air compressor 8, so that the air is dissolved in the water to form dissolved air water. Meanwhile, the dissolved gas water in the dissolved gas tank 7 is sucked into the main pipeline by utilizing the suction capacity generated when the circulating water passes through the first ejector 3, so that the dissolved gas water and the circulating water in the main pipeline are mixed and conveyed into the first electrolytic chlorine production device 4a together. Meanwhile, the proportion of the circulating water and the gas dissolving water is controlled by the circulating water flow control device and the gas dissolving water flow control device, so that the process of generating hydrogen during the chlorine preparation by electrolysis and the gas-liquid mixed flow state of the electrolytic solution are simulated. The dissolved gas water releases part of air after entering the first electrolytic chlorine production device 4a, the process of releasing hydrogen in the electrolysis process of the first electrolytic chlorine production device 4a is simulated by utilizing the gas releasing process of the dissolved gas water (one part of hydrogen generated in the actual electrolysis process is dissolved in water, and the other part of hydrogen escapes from the water), and the first electrolytic chlorine production device 4a does not need to be electrified in the process. After the gas-liquid separation is carried out on the gas-dissolved water entering the intermediate hydrogen removal device 5, the circulating water is circulated and returned to the circulating water tank 1 from the circulating water outlet of the intermediate hydrogen removal device 5 for reuse, and the separated air flows into the water drainage and collection device 6 from the air outlet of the intermediate hydrogen removal device 5 to be collected. The gas-liquid separation efficiency of the intermediate dehydrogenation device 5 can be obtained by comparing and calculating the amount of air entering the test system and the amount of air collected after separation, so that the gas-liquid separation effect of the intermediate dehydrogenation device 5 is verified.
The calculation process and the principle of the gas-liquid separation efficiency of the intermediate hydrogen removal device 5 are exemplified: under the condition of fixed temperature and pressure (the temperature and the pressure in the test process are generally kept unchanged), the dissolved air amount in unit volume of water is certain, for example, 1L of water is dissolved with cml of air, so that the air content in the water is cml/L. For example, if the flow rate of the dissolved gas water control device controls mL of the dissolved gas water to be sucked into the main line within 1 hour (where the volume of the dissolved gas water is obtained from the flow rate and time of the dissolved gas water), the amount of air sucked into the intermediate dehydrogenation device 5 is: (m × c) ml, when nml air is collected by the drainage and gas collection device 6 at this time, the gas-liquid separation efficiency of the intermediate hydrogen removal device 5 is: [ n/(m × c) ]. times.100%.
Because a part of hydrogen generated in the actual electrolysis process is dissolved in water and another part of hydrogen can escape from water, the first chlorine electrolysis device 4a is arranged only for simulating the process of hydrogen escaping from the electrolytic solution in the actual operation so as to prevent the influence on the test result, and the first chlorine electrolysis device 4a does not need to be electrified in the whole test process, namely the first chlorine electrolysis device 4a does not electrolyze seawater. As shown in fig. 1, the number of the first electrolytic chlorine generating devices 4a is two, the two first electrolytic chlorine generating devices 4a are connected in series, and the number of the first electrolytic chlorine generating devices 4a may be one or more in the actual process.
Simultaneously, this test system sets up circulating water flow control device's aim at: in practical operation, the flow rate of the seawater entering the first electrolytic chlorine production device 4a from the main pipeline is required (for example, the water flow rate of a large-scale seawater electrolytic chlorine production device is generally more than 50m3H), the circulating water flow control device can ensure that the water flow in the main pipeline meets the requirement, and the actual running condition can be reduced to ensure the testThe accuracy of (2).
Further, the circulating water supply system 101 further comprises a second ejector 10, a working fluid inlet of the second ejector 10 is communicated to a pipeline between an outlet of the circulating water pump 2 and a working fluid inlet of the first ejector 3, a working fluid outlet of the second ejector 10 is communicated with an inlet of the circulating water tank 1, and a suction port of the second ejector 10 is communicated to a pipeline between a working fluid outlet of the first ejector 3 and an inlet of the first electrolytic chlorine production device 4 a.
Specifically, by providing the second ejector 10, the circulating water remaining in the first electrolytic chlorine production device 4a and the main line can be drawn back into the circulating water tank 1 by the suction capacity of the second ejector 10 so as to be reused.
Furthermore, a first switch valve 31 is arranged on a pipeline before the injection suction port of the second ejector 10, a second switch valve 32 is arranged on a pipeline before the working fluid inlet of the second ejector 10, and a third switch valve 28 is arranged on a pipeline between the working fluid outlet of the first ejector 3 and the inlet of the first electrolytic chlorine production device 4 a.
Furthermore, a first liquid level meter 11 is arranged on the circulating water tank 1, and the first liquid level meter 11 is connected with a control end of the circulating water pump 2 through an electric signal.
Specifically, when the seawater in the circulation water tank 1 is insufficient to reach a low level, the circulation water pump 2 is turned off so as not to damage the circulation water pump 2 due to the low level.
Further, a second liquid level meter 20 is arranged on the dissolved air tank 7, and the second liquid level meter 20 is respectively in electric signal connection with the control end of the pressure pump 9 and the control end of the air compressor 8.
Specifically, when the liquid level in the dissolved air tank 7 reaches a high level, the pressurizing pump 9 and the air compressor 8 are turned off so as not to affect the normal operation of the dissolved air tank 7.
Further, a pressure transmitter 19 is arranged on the dissolved air tank 7, and the pressure transmitter 19 is respectively in electric signal connection with the control end of the pressure pump 9 and the control end of the air compressor 8.
Specifically, when the pressure in the dissolved air tank 7 reaches the upper limit, the pressurizing pump 9 and the air compressor 8 are turned off, preventing the dissolved air tank 7 from being damaged or preventing the dissolved air tank 7 from exploding.
Further, a circulating water tank inlet valve 12 is arranged on a pipeline between the circulating water inlet pipeline 40 and the inlet of the circulating water tank 1, and the circulating water tank inlet valve 12 is used for controlling the water inlet of the test system.
Further, a first circulation water tank outlet valve 14 and a pressurizing pump inlet valve 15 are provided in this order on a pipe between the outlet of the circulation water tank 1 and the inlet of the pressurizing pump 9. Wherein, the outlet valve 14 of the first circulating water tank is arranged near the outlet of the circulating water tank 1 and is used for controlling the seawater to enter the pressurized gas dissolving system 102; a booster pump inlet valve 15 is provided near the inlet of the booster pump 9 for servicing of the booster pump 9.
Further, a pressure pump outlet check valve 17 and a pressure pump outlet valve 18 are provided on a pipeline between the outlet of the pressure pump 9 and the circulating water inlet of the dissolved air tank 7. Wherein, the check valve 17 at the outlet of the pressure pump is used for preventing seawater from flowing backwards, and the outlet valve 18 of the pressure pump plays a role in adjusting and preventing the pressure pump 9 from overflowing and burning out the motor.
Further, a second circulating water tank outlet valve 23 is arranged on a pipeline between an outlet of the circulating water tank 1 and an inlet of the circulating water pump 2, a circulating water pump outlet check valve 25 and a circulating water pump outlet valve 26 are arranged on a pipeline between an outlet of the circulating water pump 2 and a working fluid inlet of the first ejector 3, the circulating water pump outlet check valve 25 is used for preventing seawater from flowing backwards, and the circulating water pump outlet valve 26 plays a role in adjusting and prevents the circulating water pump 2 from overflowing and burning out a motor. A water return pipeline valve 34 is arranged on a pipeline between the circulating water outlet of the middle hydrogen removal device 5 and the inlet of the circulating water tank 1, and the water return pipeline valve 34 is normally open.
Further, a drain valve 33 is arranged at the bottom outlet of the circulating water tank 1 and used for draining sewage or accumulated water in the circulating water tank 1.
Further, a decompression release device 35 is arranged on a pipeline between the dissolved gas water outlet of the dissolved gas tank 7 and the injection suction port of the first ejector 3. Specifically, the pressure of the dissolved air water flowing out of the dissolved air tank 7 is high, and the decompression release device 35 plays a role in decompression and pressure stabilization to prevent the dissolved air water from affecting the main pipeline. Meanwhile, since the gas is easily released after the gas-dissolved water is decompressed by the decompression release device 35, in order to prevent the reading of the second flowmeter 22 from being inaccurate, the decompression release device 35 is installed on a pipeline behind the second flowmeter 22.
Further, an automatic exhaust valve 13 is arranged at the top of the circulating water tank 1, and the automatic exhaust valve 13 is used for keeping the pressure in the circulating water tank 1 stable.
Further, a first pressure gauge 24 is arranged on an outlet pipeline of the circulating water pump 2 and used for indicating the outlet pressure of the circulating water pump 2 and preventing the circulating water pump 2 from working under overpressure. A second pressure gauge 16 is arranged on an outlet pipeline of the pressure pump 9 and used for indicating the outlet pressure of the pressure pump 9 and preventing the pressure pump 9 from working in an overpressure mode.
Further, a transparent pipe section 30 is arranged on a pipeline between the working fluid outlet of the first ejector 3 and the inlet of the first electrolytic chlorine production device 4a, and the transparent pipe section 30 is used for displaying the gas-liquid mixing state of the dissolved gas water in the main pipeline.
Further, a second electrolytic chlorine production device 4b is provided on a pipeline between the circulating water outlet of the intermediate hydrogen removal device 5 and the inlet of the circulating water tank 1. Specifically, in the actual electrolytic process, the intermediate hydrogen removal device 5 is generally arranged among the plurality of electrolytic chlorine production devices to achieve a better hydrogen removal effect, and the second electrolytic chlorine production device 4b is only used for simulating the distribution positions of the plurality of electrolytic chlorine production devices in the actual electrolytic process, without influencing the result of the test system. Of course, in other embodiments, the second electrolytic chlorine generating device 4b may not be provided.
The main working flow of the test system for simulating the intermediate dehydrogenation separation effect in the chlorine production by electrolysis provided by the embodiment of the invention is as follows:
1. when the test is performed, the first on-off valve 31, the second on-off valve 32 and the blowoff valve 33 are closed, and the other valves are kept open. Utilize circulating water pump 2 to carry the circulating water to first electrolysis system chlorine device 4a, utilize force (forcing) pump 9 with the sea water booster pump in the circulating water jar 1 to dissolve in the gas pitcher 7, utilize air compressor machine 8 to carry the air in the air compressor machine 8 surrounding environment to dissolving in the gas pitcher 7 simultaneously for the air dissolves in aqueous formation dissolves the water, and the while is through decompression release device 35 to dissolving the water and decompressing. The dissolved gas water is sucked into the main pipeline by utilizing the suction capacity of the circulating water generated when the circulating water passes through the first ejector 3, so that the dissolved gas water and the circulating water in the main pipeline are mixed and conveyed into the first electrolytic chlorine production device 4a together. Meanwhile, the proportion of the circulating water and the gas dissolving water is controlled by the circulating water flow control device and the gas dissolving water flow control device, so that the process of generating hydrogen during the chlorine preparation by electrolysis and the gas-liquid mixed flow state of the electrolytic solution are simulated. The gas-dissolved water releases part of air after entering the first electrolytic chlorine production device 4a, and the process of releasing hydrogen in the electrolysis process of the first electrolytic chlorine production device 4a is simulated by utilizing the gas-releasing process of the gas-dissolved water. After the gas-liquid separation is carried out on the gas-dissolved water in the middle hydrogen removal device 5, the circulating water is circulated and flows back to the circulating water tank 1 for recycling, and the separated air is collected by the water drainage and collection device 6. The gas-liquid separation efficiency of the intermediate dehydrogenation device 5 can be obtained by comparing and calculating the amount of air entering the test system and the amount of air collected after separation, so that the gas-liquid separation effect of the intermediate dehydrogenation device 5 is verified.
2. After the test is finished, the first switch valve 31 and the second switch valve 32 are opened, and the third switch valve 28 is closed, so that the residual circulating water in the first electrolytic chlorine generating device 4a and the main pipeline is pumped back to the circulating water tank 1 by utilizing the pumping capacity of the second ejector 10 so as to be reused.
The embodiment of the invention has the beneficial effects that:
1. the whole test process does not generate hydrogen, and the test safety is improved.
2. In the test process, the first electrolytic chlorine production device 4a and the second electrolytic chlorine production device 4b do not need to be electrified, and the seawater is not electrolyzed, so that the test seawater can be recycled. Meanwhile, the test energy consumption is greatly reduced, the requirements on a test power distribution system are reduced, and the gas-liquid separation effect of the intermediate dehydrogenation device 5 can be tested for a long period.
3. In the test process, seawater is not electrolyzed, and the air content in the dissolved air water is always kept stable, so that the gas-liquid separation effect of the intermediate dehydrogenation device 5 can be effectively verified. In the prior art, as the seawater is continuously electrolyzed by the electrolytic chlorine production device, the content of chloride ions in the electrolyzed seawater is gradually reduced, the amount of hydrogen generated by electrolysis is gradually reduced, and the gas-liquid separation effect of the intermediate dehydrogenation device cannot be effectively verified.
4. The test system has universality on different intermediate dehydrogenation devices 5, the system equipment is high in reutilization, and the test cost is reduced.
5. The whole test system is an independent system, does not need to depend on equipment on a production line, and does not influence the normal production order.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (10)
1. A test system for simulating the middle hydrogen removal separation effect in chlorine production by electrolysis is characterized by comprising a circulating water supply system (101), a pressurizing and gas dissolving system (102), a first chlorine production device (4a) by electrolysis, a middle hydrogen removal device (5) and a water drainage and gas collection device (6), wherein the circulating water supply system (101) comprises a circulating water inlet pipeline (40), a circulating water tank (1), a circulating water pump (2) and a first ejector (3), and the pressurizing and gas dissolving system (102) comprises an air compressor (8), a gas dissolving tank (7) and a pressurizing pump (9);
the circulating water inlet pipeline (40) is communicated with an inlet of the circulating water tank (1), an outlet of the circulating water tank (1) is divided into two paths, one path is communicated with an inlet of the circulating water pump (2), an outlet of the circulating water pump (2) is communicated with a working fluid inlet of the first ejector (3), and a working fluid outlet of the first ejector (3) is communicated with an inlet of the first electrolytic chlorine production device (4 a); the other path is communicated with an inlet of the booster pump (9), and an outlet of the booster pump (9) is communicated with a circulating water inlet of the dissolved air tank (7); the outlet of the air compressor (8) is communicated with the air inlet of the dissolved air tank (7), and the dissolved air water outlet of the dissolved air tank (7) is communicated with the injection suction port of the first ejector (3);
the outlet of the first electrolytic chlorine production device (4a) is communicated with the dissolved gas water inlet of the middle hydrogen removal device (5), the air outlet of the middle hydrogen removal device (5) is communicated with the inlet of the water drainage and collection device (6), and the circulating water outlet of the middle hydrogen removal device (5) is communicated with the inlet of the circulating water tank (1).
2. The test system for simulating the separation effect of the intermediate hydrogen removal by electrolysis for chlorine production according to claim 1, wherein the circulating water supply system (101) further comprises a circulating water flow control device, the circulating water flow control device comprises a first diaphragm valve (27) and a first flow meter (29), the first diaphragm valve (27) is arranged on a pipeline between the outlet of the circulating water pump (2) and the working fluid inlet of the first ejector (3), and the first flow meter (29) is arranged on a pipeline between the working fluid outlet of the first ejector (3) and the inlet of the first device for electrolysis for chlorine production (4 a).
3. The test system for simulating the separation effect of the intermediate hydrogen removal in the production of chlorine by electrolysis according to claim 1, wherein the pressurized dissolved air system (102) further comprises a dissolved air water flow control device, the dissolved air water flow control device comprises a second diaphragm valve (21) and a second flow meter (22), and the second diaphragm valve (21) and the second flow meter (22) are arranged on a pipeline between a dissolved air water outlet of the dissolved air tank (7) and an injection suction port of the first injector (3).
4. The test system for simulating the separation effect of the intermediate hydrogen removal by electrolysis for producing chlorine according to claim 1, wherein the circulating water supply system (101) further comprises a second ejector (10), a working fluid inlet of the second ejector (10) is communicated to a pipeline between an outlet of the circulating water pump (2) and a working fluid inlet of the first ejector (3), a working fluid outlet of the second ejector (10) is communicated to an inlet of the circulating water tank (1), and a suction port of the second ejector (10) is communicated to a pipeline between a working fluid outlet of the first ejector (3) and an inlet of the first device (4a) for producing chlorine by electrolysis.
5. The test system for simulating the intermediate hydrogen removal separation effect in the production of chlorine by electrolysis according to claim 4, wherein a first on-off valve (31) is arranged on a pipeline before the suction port of the second ejector (10), a second on-off valve (32) is arranged on a pipeline before the working fluid inlet of the second ejector (10), and a third on-off valve (28) is arranged on a pipeline between the working fluid outlet of the first ejector (3) and the inlet of the first chlorine electrolysis device (4 a).
6. The test system for simulating the separation effect of the intermediate hydrogen removal by electrolysis for chlorine production according to claim 1, wherein a second electrolysis chlorine production device (4b) is provided on a pipeline between the circulating water outlet of the intermediate hydrogen removal device (5) and the inlet of the circulating water tank (1).
7. The test system for simulating the intermediate hydrogen removal separation effect in the chlorine production by electrolysis according to claim 1, wherein a first liquid level meter (11) is arranged on the circulating water tank (1), the first liquid level meter (11) is electrically connected with the control end of the circulating water pump (2), a second liquid level meter (20) is arranged on the dissolved air tank (7), and the second liquid level meter (20) is respectively electrically connected with the control end of the pressure pump (9) and the control end of the air compressor (8).
8. The test system for simulating the intermediate hydrogen removal separation effect in the chlorine production by electrolysis according to claim 1, wherein the dissolved air tank (7) is provided with a pressure transmitter (19), and the pressure transmitter (19) is electrically connected with the control end of the pressure pump (9) and the control end of the air compressor (8) respectively.
9. The test system for simulating the intermediate hydrogen removal separation effect in the production of chlorine by electrolysis according to claim 1, wherein a circulating water tank inlet valve (12) is disposed on a pipeline between the circulating water inlet pipeline (40) and the inlet of the circulating water tank (1), a first circulating water tank outlet valve (14) and a pressure pump inlet valve (15) are sequentially disposed on a pipeline between the outlet of the circulating water tank (1) and the inlet of the pressure pump (9), a pressure pump outlet check valve (17) and a pressure pump outlet valve (18) are disposed on a pipeline between the outlet of the pressure pump (9) and the circulating water inlet of the dissolved air tank (7), a second circulating water tank outlet valve (23) is disposed on a pipeline between the outlet of the circulating water tank (1) and the inlet of the circulating water pump (2), and a circulating water pump outlet check valve is disposed on a pipeline between the outlet of the circulating water pump (2) and the working fluid inlet of the first ejector (3) (25) And a circulating water pump outlet valve (26), and a water return pipeline valve (34) is arranged on a pipeline between a circulating water outlet of the middle hydrogen removal device (5) and an inlet of the circulating water tank (1).
10. The test system for simulating the intermediate hydrogen removal separation effect in the production of chlorine by electrolysis according to claim 1, wherein a pressure reduction release device (35) is arranged on a pipeline between the dissolved gas water outlet of the dissolved gas tank (7) and the injection suction port of the first ejector (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011350475.5A CN112630377B (en) | 2020-11-26 | 2020-11-26 | Test system for simulating hydrogen removal separation effect in chlorine production by electrolysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011350475.5A CN112630377B (en) | 2020-11-26 | 2020-11-26 | Test system for simulating hydrogen removal separation effect in chlorine production by electrolysis |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112630377A true CN112630377A (en) | 2021-04-09 |
| CN112630377B CN112630377B (en) | 2022-12-20 |
Family
ID=75304049
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011350475.5A Active CN112630377B (en) | 2020-11-26 | 2020-11-26 | Test system for simulating hydrogen removal separation effect in chlorine production by electrolysis |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112630377B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203096191U (en) * | 2013-01-25 | 2013-07-31 | 河北省电力建设调整试验所 | Dynamic simulation testing device for producing sodium hypochlorite by electrolyzing sea water |
| CN106567103A (en) * | 2016-11-08 | 2017-04-19 | 中广核工程有限公司 | Co-production method and system for sodium hypochlorite and high-purity hydrogen |
| CN206173452U (en) * | 2016-07-23 | 2017-05-17 | 中广核工程有限公司 | High -efficient saline electrolysis sodium hypochlorite system of big productivity |
| CN107226516A (en) * | 2017-07-14 | 2017-10-03 | 青岛双瑞海洋环境工程股份有限公司 | The handling process and device of electrolysis ballast for cruising water treatment procedure byproduct hydrogen gas |
-
2020
- 2020-11-26 CN CN202011350475.5A patent/CN112630377B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203096191U (en) * | 2013-01-25 | 2013-07-31 | 河北省电力建设调整试验所 | Dynamic simulation testing device for producing sodium hypochlorite by electrolyzing sea water |
| CN206173452U (en) * | 2016-07-23 | 2017-05-17 | 中广核工程有限公司 | High -efficient saline electrolysis sodium hypochlorite system of big productivity |
| CN106567103A (en) * | 2016-11-08 | 2017-04-19 | 中广核工程有限公司 | Co-production method and system for sodium hypochlorite and high-purity hydrogen |
| CN107226516A (en) * | 2017-07-14 | 2017-10-03 | 青岛双瑞海洋环境工程股份有限公司 | The handling process and device of electrolysis ballast for cruising water treatment procedure byproduct hydrogen gas |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112630377B (en) | 2022-12-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| ATE491053T1 (en) | HIGH PRESSURE ELECTROLYSIS PLANT AND METHOD FOR INERTIZING SUCH A PLANT | |
| CN208151489U (en) | A kind of hypochlorite generator | |
| CN110398116A (en) | A kind of equipment cooling water circulation system | |
| CN112630377B (en) | Test system for simulating hydrogen removal separation effect in chlorine production by electrolysis | |
| CN105502696A (en) | Constant pressure water-supplementing and degassing unit | |
| KR101371616B1 (en) | Naocl dilution structure of generation-system for antiseptic solution including chlorine | |
| CN202785855U (en) | Constant-pressure exhaust water quality stabilizing integral machine | |
| CN209507650U (en) | A kind of ionic membrane method alkaline electrolysis light salt brine dechlorination system | |
| CN206940652U (en) | A kind of water-leakage protecting device and the water purification machine with water-leakage protecting device | |
| CN215592663U (en) | Self-gas circulation multistage pressure type dissolved air floatation system | |
| JP6727984B2 (en) | Electrolysis device | |
| CN206872956U (en) | A kind of sodium hypochlorite prepares online and dosing system | |
| CN215712205U (en) | Emergency treatment device for water polluted desalting water tank | |
| KR20130066084A (en) | Gas-liguide separator for electrolytic sterilizer generation system | |
| CN204550119U (en) | A kind of dissolving with Liquid level auto-admission and manual air inlet function | |
| CN215481321U (en) | Hydrogen discharge system for indoor chlorine production equipment by electrolysis | |
| CN100476089C (en) | Totally-enclosed self-equilibrium cavate type non-negative pressure water supplying system | |
| CN211051270U (en) | Automatic salt water diluting system based on water ejector | |
| CN113697928A (en) | Hydrogen-rich water's preparation equipment | |
| CN206051735U (en) | A kind of double-stage reverse osmosis system | |
| CN205387502U (en) | Constant pressure water supplementing degasification unit | |
| CN206359624U (en) | Interactive sodium hypochlorite generators | |
| CN213507233U (en) | Anode liquid tank overflow adjusting system | |
| CN214655278U (en) | Recovery device for electrolytic residual liquid of chlorine dioxide generator by electrolytic method | |
| CN219586197U (en) | Electrolytic salt water sodium hypochlorite generator |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |