CN218146985U - Electrolytic cell temperature control system - Google Patents
Electrolytic cell temperature control system Download PDFInfo
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- CN218146985U CN218146985U CN202222252434.3U CN202222252434U CN218146985U CN 218146985 U CN218146985 U CN 218146985U CN 202222252434 U CN202222252434 U CN 202222252434U CN 218146985 U CN218146985 U CN 218146985U
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- 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
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Abstract
The utility model discloses an electrolytic bath temperature control system, which comprises an elevated tank, a branch heat exchanger, an electrolytic bath, a circulating tank, a total heat exchanger and a water source; the liquid outlet of the elevated tank is respectively communicated with the heat medium inlet of each branch heat exchanger, and the heat medium outlet of each branch heat exchanger is communicated with the catholyte inlet of the corresponding electrolytic tank; the cathode liquid outlet of each electrolytic tank is communicated with the liquid inlet of the circulating tank, the liquid outlet of the circulating tank is communicated with the heat medium inlet of the main heat exchanger, the heat medium outlet of the main heat exchanger is communicated with the liquid inlet of the elevated tank, and the water source is communicated with the pipeline at the liquid outlet of the elevated tank. The utility model has the advantages that: the utility model has simple connection structure, easy realization, reduction of the voltage of the electrolytic bath, reduction of energy consumption and saving of electricity purchasing cost; and simultaneously, the service life of the groove frame gasket is prevented from being reduced.
Description
The technical field is as follows:
the utility model relates to a control system, in particular to an electrolytic bath temperature control system.
The background art comprises the following steps:
the chlor-alkali industry is a process for preparing NaOH and Cl by electrolyzing saturated NaCl solution in an electrolytic cell 2 And H 2 And a series of chemical products are produced by taking the raw materials as raw materials; the temperature of the electrolytic cell is required to be controlled below 87 ℃ in the operation process at present, and on the basis, the higher the temperature control of the electrolytic cell is, the lower the voltage of the electrolytic cell is, and the lower the energy consumption is; at present, 8 electrolytic tanks are required to work simultaneously in order to ensure the yield, but because the operating time of the tank frame and the ionic membrane of 8 electrolytic tanks is different, the worse electrolytic tank condition is, the more side reactions are, the higher the tank temperature is, in order to control the temperature, the cathode alkali liquor discharged by 8 electrolytic tanks is collected and then is subjected to heat exchange and cooling through a plate heat exchanger to control the temperature of the electrolytic tanks, the control mode is rough, the tank temperature of each electrolytic tank cannot be controlled, the lower the tank temperature of some electrolytic tanks is caused, the electricity consumption is increased, the higher the tank temperature of some electrolytic tanks is, even higher than 87 ℃, the service life of the gasket of the tank frame is shortened, the gasket of the tank frame is even aged, the leakage is further caused, and the potential safety hazard is caused.
The utility model has the following contents:
the utility model aims to provide an electrolytic bath temperature control system which has simple structure and reduces the power consumption.
The utility model discloses by following technical scheme implement: the purpose of the patent is to provide an electrolytic bath temperature control system, which comprises a head tank, a branch heat exchanger, an electrolytic bath, a circulating bath, a total heat exchanger and a water source; the liquid outlet of the elevated tank is respectively communicated with the heat medium inlet of each branch heat exchanger, and the heat medium outlet of each branch heat exchanger is communicated with the catholyte inlet of the corresponding electrolytic tank; the cathode liquid outlet of each electrolytic cell is communicated with the liquid inlet of the circulating cell, the liquid outlet of the circulating cell is communicated with the heat medium inlet of the main heat exchanger, the heat medium outlet of the main heat exchanger is communicated with the liquid inlet of the elevated tank, and the water source is communicated with the pipeline at the liquid outlet of the elevated tank.
Further, the device also comprises a finished product alkali tank; and the liquid outlet of the circulating tank is communicated with the liquid inlet of the finished product alkali tank.
Further, the liquid outlet of the elevated tank is respectively communicated with the catholyte inlet of each electrolytic tank.
Further, it includes temperature sensor, regulating valve and controller; the temperature sensor is arranged on a pipeline between each branch heat exchanger and the corresponding electrolytic cell; the regulating valve is arranged at the cold medium inlet of each branch heat exchanger; and the signal output end of each temperature sensor is in signal connection with the signal input end of the controller, and the signal output end of the controller is in signal connection with the signal input end of each regulating valve respectively.
Further, a liquid outlet of the circulating groove is communicated with a liquid inlet of the elevated groove; a liquid level sensor is arranged in the elevated tank, and a control valve is arranged on a pipeline between the circulating tank and the elevated tank; the liquid level sensor is connected with the signal input end of the controller through a signal, and the signal output end of the controller is connected with the signal input end of the control valve through a signal.
The utility model has the advantages that: the utility model has simple connection structure and easy realization, the heat exchanger is added in front of the catholyte inlet of each electrolytic cell, the heat exchange intensity of the total heat exchanger can be reduced, and further the temperature of the catholyte in the elevated tank is improved, only the corresponding branch heat exchanger needs to be opened for the electrolytic cell with higher temperature, and the corresponding branch heat exchanger does not need to be opened for the electrolytic cell with proper temperature, thereby ensuring that the temperature of the electrolytic cell is controlled at the highest temperature below 87 ℃, further reducing the voltage of the electrolytic cell, reducing the energy consumption and saving the electricity purchasing cost; and simultaneously, the service life of the groove frame gasket is prevented from being reduced.
Description of the drawings:
in order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a control schematic diagram of the present invention.
The system comprises an elevated tank 1, a branch heat exchanger 2, an electrolytic tank 3, a circulating tank 4, a total heat exchanger 5, a water source 6, a finished product alkali tank 7, a temperature sensor 8, a regulating valve 9, a controller 10, a liquid level sensor 11 and a control valve 12.
The specific implementation mode is as follows:
as shown in fig. 1 and fig. 2, an electrolytic cell temperature control system comprises a head tank 1, a branch heat exchanger 2, an electrolytic cell 3, a circulation tank 4, a total heat exchanger 5, a water source 6, a finished alkali tank 7, a temperature sensor 8, a regulating valve 9 and a controller 10; the liquid outlet of the elevated tank 1 is respectively communicated with the heat medium inlet of each branch heat exchanger 2 and the catholyte inlet of each electrolytic tank 3, and the heat medium outlet of each branch heat exchanger 2 is communicated with the catholyte inlet of the corresponding electrolytic tank 3; the catholyte outlet of each electrolytic tank 3 is communicated with the liquid inlet of the circulating tank 4, the liquid outlet of the circulating tank 4 is respectively communicated with the heat medium inlet of the main heat exchanger 5 and the liquid inlet of the finished product alkali tank 7, the heat medium outlet of the main heat exchanger 5 is communicated with the liquid inlet of the elevated tank 1, and the water source 6 is communicated with the pipeline at the liquid outlet of the elevated tank 1.
A liquid outlet of the circulating groove 4 is communicated with a liquid inlet of the elevated tank 1; a liquid level sensor 11 is provided in the head tank 1, and a control valve 12 is provided in a pipe between the circulation tank 4 and the head tank 1.
A temperature sensor 8 is arranged on a pipeline between each branch heat exchanger 2 and the corresponding electrolytic tank 3, and a regulating valve 9 is arranged at a cold medium inlet of each branch heat exchanger 2; the signal output ends of each temperature sensor 8 and each liquid level sensor 11 are in signal connection with the signal input end of the controller 10, and the signal output end of the controller 10 is in signal connection with the signal input end of each regulating valve 9 and each control valve 12.
The working principle is as follows: the catholyte from the electrolytic tank 3 is about 32 percent of alkali liquor, one part of the catholyte is taken as a product and sent to a finished product alkali tank 7, the other part of the catholyte is sent to the head tank 1 after being cooled by the total heat exchanger 5, and then the catholyte comes out from the head tank 1 and is mixed with water, so that the concentration of the catholyte is reduced to 27 percent, and then the catholyte enters 8 electrolytic tanks 3 respectively for electrolysis; the inlet of each electrolytic cell 3 is respectively subjected to temperature detection through a temperature sensor 8, and signals are sent to a controller 10; when the temperature is higher than the set value, the controller 10 controls the corresponding regulating valve 9 to be enlarged, so that the alkali liquor is subjected to heat exchange and cooling in the branch heat exchanger 2; the temperature of the electrolytic cell 3 is controlled to be the highest temperature below 87 ℃, so that the voltage of the electrolytic cell 3 is reduced, the energy consumption is reduced, and the electricity purchasing cost is saved; and simultaneously, the service life of the groove frame gasket is prevented from being reduced.
The liquid level sensor 11 detects the liquid level in the head tank 1 at any time and sends a signal to the controller 10, and when the liquid level is lower than a set value, the controller 10 controls the control valve 12 to be increased, so that the flow of the alkali liquor is increased, and the alkali liquor in the head tank 1 is ensured to be sufficient.
The cell temperatures and current-voltage conditions of the present 8 cells 3 are shown in Table 1 below.
TABLE 1
As can be seen from Table 1, after the catholyte is subjected to heat exchange and cooling by the branch heat exchanger 2 and then enters the electrolytic cell 3, the temperature of the electrolytic cell can be controlled between 86.9 and 87 ℃, and the alternating current power consumption is obviously reduced.
The above description is only a preferred embodiment of the present invention, and should not be taken as limiting the invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A temperature control system of an electrolytic cell is characterized by comprising a head tank, a branch heat exchanger, an electrolytic cell, a circulating tank, a total heat exchanger and a water source; the liquid outlet of the elevated tank is respectively communicated with the heat medium inlet of each branch heat exchanger, and the heat medium outlet of each branch heat exchanger is communicated with the cathode liquid inlet of the corresponding electrolytic tank; the cathode liquid outlet of each electrolytic cell is communicated with the liquid inlet of the circulating cell, the liquid outlet of the circulating cell is communicated with the heat medium inlet of the main heat exchanger, the heat medium outlet of the main heat exchanger is communicated with the liquid inlet of the elevated tank, and the water source is communicated with the pipeline at the liquid outlet of the elevated tank.
2. The system of claim 1, which further comprises a finished product alkali tank; and the liquid outlet of the circulating tank is communicated with the liquid inlet of the finished product alkali tank.
3. An electrolytic cell temperature control system as claimed in claim 1, wherein the liquid outlet of said head tank is in communication with the catholyte inlet of each of said electrolytic cells.
4. An electrolytic cell temperature control system according to claim 3, characterized in that it comprises a temperature sensor, a regulating valve and a controller; the temperature sensor is arranged on a pipeline between each branch heat exchanger and the corresponding electrolytic cell; the regulating valve is arranged at the cold medium inlet of each branch heat exchanger; and the signal output end of each temperature sensor is in signal connection with the signal input end of the controller, and the signal output end of the controller is in signal connection with the signal input end of each regulating valve respectively.
5. An electrolytic cell temperature control system according to claim 4, wherein a liquid outlet of said circulation tank is communicated with a liquid inlet of said head tank; a liquid level sensor is arranged in the head tank, and a control valve is arranged on a pipeline between the circulating tank and the head tank; the liquid level sensor is connected with the signal input end of the controller through a signal, and the signal output end of the controller is connected with the signal input end of the control valve through a signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222252434.3U CN218146985U (en) | 2022-08-25 | 2022-08-25 | Electrolytic cell temperature control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222252434.3U CN218146985U (en) | 2022-08-25 | 2022-08-25 | Electrolytic cell temperature control system |
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| Publication Number | Publication Date |
|---|---|
| CN218146985U true CN218146985U (en) | 2022-12-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222252434.3U Active CN218146985U (en) | 2022-08-25 | 2022-08-25 | Electrolytic cell temperature control system |
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| CN (1) | CN218146985U (en) |
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2022
- 2022-08-25 CN CN202222252434.3U patent/CN218146985U/en active Active
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