CN113026034B - Novel electrolytic tank for hydrogen fluoride electrolysis - Google Patents
Novel electrolytic tank for hydrogen fluoride electrolysis Download PDFInfo
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- CN113026034B CN113026034B CN202110221655.1A CN202110221655A CN113026034B CN 113026034 B CN113026034 B CN 113026034B CN 202110221655 A CN202110221655 A CN 202110221655A CN 113026034 B CN113026034 B CN 113026034B
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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
- C25B1/24—Halogens or compounds thereof
- C25B1/245—Fluorine; Compounds thereof
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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
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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
- C25B13/00—Diaphragms; Spacing elements
- C25B13/02—Diaphragms; Spacing elements characterised by shape or form
Abstract
The invention relates to the technical field of electrolytic cells, in particular to a novel electrolytic cell for hydrogen fluoride electrolysis, which comprises a cell body, an anode group, a cathode group, a diaphragm group and a controller, wherein the anode group is arranged on the cell body; because the electrolytic process of the hydrogen fluoride belongs to a heat release state, the temperature needs to be reduced in time, the stable electrolytic state of the electrolyte in the electrolytic cell is prevented from being influenced, and the internal shape of the cooling pipe arranged in the electrolytic cell is damaged, so that the electrolytic effect of the electrolyte on the electrode plate is influenced; therefore, the inner part of the cell body is uniformly divided by the arranged diaphragm group, the prepared fluorine gas and hydrogen gas are replaced by the nitrogen blowing pipe, the concentration of the gas simple substance is reduced, the safety is enhanced, the flat cooling pipe is attached to the outer wall of the cell body so as to be convenient for heat conduction, the interference to the inner space of the cell body is avoided, the utilization rate of the electrolyte is increased, and then the electrolyte is in a stable electrolytic state, so that the operation effect of the novel electrolytic cell for electrolyzing the hydrogen fluoride is improved.
Description
Technical Field
The invention relates to the technical field of electrolytic cells, in particular to a novel electrolytic cell for hydrogen fluoride electrolysis.
Background
Fluorine is an element which is very active chemically, and almost no free fluorine exists in nature; at present general electrolysis trough type primary structure is that whole diaphragm separates positive pole and negative pole, and the mode that the positive pole is connected generally is bolted connection on copper gallows or copper frame for every carbon plate, and outside the cell was drawn forth by the conducting rod again, polylith carbon plate produced many places conductor contact resistance with copper gallows or copper frame tie point, and the reduction current efficiency, polylith carbon plate even become whole, and the equipment, work load is big when overhauing, leads to electrolysis trough output low, the energy consumption is big, fluorine system is with high costs.
Meanwhile, fluorine gas and hydrogen gas generated by hydrogen fluoride electrolysis need to be processed in time to ensure safety, the electrolysis process of the hydrogen fluoride belongs to a heat release state, temperature needs to be reduced in time, the stable electrolysis state of electrolyte in the electrolytic cell is avoided being influenced, and the cooling pipe arranged in the electrolytic cell increases the volume of the electrolytic cell, causes damage to the internal shape of the electrolytic cell and influences the electrolysis effect of the electrolyte on the electrode plate.
Some technical solutions related to an electrolytic cell for hydrogen fluoride electrolysis have appeared in the prior art, for example, a chinese patent with application number CN201110276871.2 discloses a fluorine gas generator, which includes an electrolytic cell, a hydrogen gas dehydrof device, a fluorine gas purification pipe, a hydrogen fluoride raw material tank, a hydrogen fluoride liquefier, and a dc power supply, wherein: two heating jackets with semi-annular sections are arranged on the electrolytic bath body, and the jackets are provided with a circulating water inlet and a circulating water outlet; the anode of the electrolytic cell is connected with an anode conducting rod; the anode conducting rod is hollow, and a fluorine gas inlet is formed in the anode conducting rod; the cathode is a circular ring with a rectangular cross section, is close to the outside of the partition of the cathode chamber and the anode chamber and is fixed on the top cover through a cathode conducting rod; the technical scheme can produce high-purity fluorine gas, can meet different use pressures, and has the advantages of simple structure, convenient part replacement and maintenance, simple operation process, low price and convenient use; however, the technical scheme does not effectively solve the problem of heat generated in the electrolytic process of the hydrogen fluoride, and the hydrogen synchronously generated in the electrolytic process is not effectively treated, so that the practical effect of the hydrogen fluoride electrolysis is weakened.
In view of this, the present invention proposes a new electrolytic cell for the electrolysis of hydrogen fluoride, solving the above technical problem.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides a novel electrolytic cell for hydrogen fluoride electrolysis, the interior of a cell body is uniformly divided by an arranged diaphragm group, prepared fluorine gas and hydrogen gas are replaced by a nitrogen blowing pipe, the concentration of a gas simple substance is reduced, the safety is enhanced, a flat cooling pipe is attached to the outer wall of the cell body so as to facilitate heat conduction, the interference to the inner space of the cell body is avoided, the utilization rate of electrolyte is increased, and then the electrolyte is in a stable electrolytic state, so that the operation effect of the novel electrolytic cell for hydrogen fluoride electrolysis is improved.
The invention relates to a novel electrolytic tank for hydrogen fluoride electrolysis, which comprises a tank body, an anode group, a cathode group, a diaphragm group and a controller, wherein the anode group is arranged on the tank body; the inner space of the tank body is uniformly divided by the diaphragm group, a liquid level measuring pipe is also arranged on the outer wall of the tank body, a charging pipe is also arranged on the tank body at the bottom of the liquid level measuring pipe, and a nitrogen blowing pipe is also arranged on the tank body at the top of the liquid level measuring pipe; the nitrogen blowing pipe is respectively communicated to the inner side and the outer side of the diaphragm group in the tank body, and an exhaust pipe is arranged on the outer side of the nitrogen blowing pipe and used for collecting electrolysis products in the tank body; the top of the tank body is also provided with a tank cover, the tank cover is also provided with an anode conducting rod, and the bottom of the anode conducting rod is connected with the anode group; the tank cover is in a closed state after being mounted to the tank body, and the anode group below the tank cover is immersed into electrolyte outside the diaphragm group in the tank body; the cathode group is arranged on the bottom of the tank body in the diaphragm group; the outer side of the tank body is also provided with a surrounding cooling pipe which is a flat pipe and is attached to the side wall of the tank body; the controller is used for regulating the operation of the electrolytic cell;
in the prior art, fluorine gas and hydrogen gas generated by hydrogen fluoride electrolysis need to be processed in time to ensure safety, the electrolysis process of hydrogen fluoride belongs to a heat release state, and needs to be cooled in time to avoid influencing the stable electrolysis state of electrolyte in an electrolytic cell, and a cooling pipe arranged in the electrolytic cell increases the volume of the electrolytic cell, damages the internal shape of the electrolytic cell and influences the electrolysis effect of the electrolyte on an electrode plate;
therefore, the invention sets the diaphragm group in the tank body, in the electrolytic process of the hydrogen fluoride, the tank cover is hermetically arranged on the tank body, then the controller is started to control the current parameter transmitted to the anode group by the conductive rod, the hydrogen fluoride in the tank body is electrolyzed, the fluorine gas and the hydrogen generated by electrolysis float up and gather at the inner side and the outer side of the diaphragm group respectively, then the nitrogen gas introduced into the nitrogen blowing pipe is utilized to collect the fluorine gas and the hydrogen gas in the tank body along with the circulating nitrogen gas through the exhaust pipe, simultaneously the heat generated in the electrolytic process is dissipated through the cooling pipe on the outer wall of the tank body, then the hydrogen fluoride is dissolved into the set aqueous solution, the hydrogen fluoride is supplemented from the bottom of the tank body through the one-way valve in the feed pipe, the amount of the aqueous solution of the hydrogen fluoride in the tank body is obtained through the liquid level measuring pipe, and the hydrogen fluoride in the tank body is in the state of submerging the diaphragm group, ensuring that the electrolytic process of the hydrogen fluoride is in a stable liquid level range in the cell body; the invention equally divides the interior of the tank body by utilizing the set diaphragm group, and replaces the prepared fluorine gas and hydrogen gas by the nitrogen blowing pipe, thereby reducing the concentration of the gas simple substance and enhancing the safety, and adopts the flat cooling pipe to be attached on the outer wall of the tank body so as to be convenient for heat conduction, and avoids the interference to the inner space of the tank body, thereby increasing the utilization rate of the electrolyte, and further leading the electrolyte to be in a stable electrolytic state, thereby improving the operation effect of the novel electrolytic tank for electrolyzing the hydrogen fluoride.
Preferably, the tank cover is further provided with a sealing box, and the sealing box is made of insulating materials and is sleeved on the anode conducting rod; the sealing box is used for keeping the closed state of the anode conducting rod on the tank cover; when the electrolytic cell is in work, after the cell cover is arranged on the cell body, the position of the anode group needs to be controlled through the anode conducting rod, and the cell cover is usually made of calcium fluoride sealing material, so that the problem that the electrolytic cell is inconvenient to install and is easy to leak under the influence of hydrogen fluoride electrolyte is solved; therefore, the invention sleeves the sealing box on the anode conducting rod through the arranged sealing box, and then utilizes the sealing box to carry out final sealing on the anode conducting rod on the tank cover after the position of the anode group below the tank cover is adjusted, thereby ensuring the sealing performance of the tank cover after being installed on the tank body, and further maintaining the operation effect of the novel electrolytic tank for hydrogen fluoride electrolysis.
Preferably, the cooling pipe is also provided with fins, and the fins are positioned on the surface of the cooling pipe, which is back to the groove body; the cooling pipe is also provided with a fan at the bent part, and the axial direction of the fan is parallel to the fins; when the electrolytic cell works, the energy release process of hydrogen fluoride electrolysis to form hydrated ions is larger than the energy required for breaking chemical bonds, so that the temperature of an electrolyte solution is increased, and the stability of the electrolysis process is influenced; through setting up the fin on the cooling tube, the fan in cooling tube bending portion is installed in the cooperation, has played the air-cooled radiating action of side-blown formula to the cooling tube, makes it superpose mutually with the cooling tube to the water-cooling effect of cell body, further strengthens the cooling effect to the cell body, ensures that the temperature of electrolyte is in stable range to the operational effect of the novel electrolysis trough that is used for hydrogen fluoride electrolysis has been maintained.
Preferably, the anode group further comprises a carbon plate, a copper hanger and a carbon fiber clamping plate; the surface of the carbon plate is subjected to nickel plating treatment; the top end of the copper hanger is connected with the anode conducting rod on the tank cover, the bottom end of the copper hanger is provided with a carbon fiber clamping plate, and the copper hanger fixes the carbon plate through the carbon fiber clamping plate; when the electrolytic cell works, the hydrogen fluoride material in the electrolyte has strong acidity, so that the carbon plate in the anode group is corroded after being used for many times, the electrolytic performance of the carbon plate is weakened, and meanwhile, the copper clamping plate is easy to deform under the reaction force when the carbon plate is clamped, and the corrosion is also generated and pollutes the electrolytic cell in the process of immersing the copper clamping plate in the hydrogen fluoride electrolyte; therefore, the invention enhances the strength, conductivity and corrosion resistance of the carbon plate by carrying out nickel plating treatment on the surface of the carbon plate, greatly prolongs the service life of the carbon plate, can adjust the carbon plate to be in the best distance position with the diaphragm group by connecting the copper hanger on the anode conducting rod on the tank cover, and replaces the copper clamping plate by the carbon fiber clamping plate, thereby solving the problems of lower strength and corrosion of the copper clamping plate, simultaneously avoiding the damage to the nickel plating layer caused by the rigid connection state of the carbon fiber clamping plate due to the toughness of the carbon fiber clamping plate, ensuring the stable state of the anode group in the electrolytic process, and further improving the operation effect of the novel electrolytic tank for hydrogen fluoride electrolysis.
Preferably, the cathode set further comprises a cathode frame and a cathode plate; the cathode frame is arranged inside the diaphragm group in the tank body, the cathode frames are connected through a telescopic rod in the plane direction vertical to the diaphragm group, and a cathode cavity is reserved at the top of the cathode frame in the diaphragm group; the cathode plate is arranged in the cathode frame through a damping shaft and adjusted to be in an inclined state; when the device works, fluorine gas and hydrogen gas generated by hydrogen fluoride float up in an electrolyte solution, and if the fluorine gas and the hydrogen gas are mixed in the electrolyte solution, the purity of a product collected by an exhaust pipe is damaged, and potential safety hazards are also generated; therefore, the cathode frame is arranged in the diaphragm group, the cathode cavity is formed in the diaphragm group, electrolytic products are respectively collected by the exhaust pipes on the inner side and the outer side of the diaphragm group, hydrogen generated by the cathode can completely enter the cathode cavity and does not escape out of the diaphragm group, the operation safety is ensured, the cathode plate arranged in the cathode frame through the damping shaft can adjust the deflection state of the cathode plate according to the set electrolysis speed, and the distance between the cathode plate and the diaphragm group is adjusted by matching with the telescopic rod arranged in the cathode frame, so that the hydrogen generated on the cathode plate is smoothly discharged into the cathode cavity, and the operation effect of the novel electrolytic cell for electrolyzing the hydrogen fluoride is improved.
Preferably, the diaphragm group is of an inverted U-shaped structure, and a fixed small cover plate is further arranged above the diaphragm group; the outer side of the small cover plate is also provided with a large cover plate, the small cover plate is clamped and installed in the large cover plate, and the small cover plate and the large cover plate are respectively matched with the diaphragm group and the groove body in size; when the electrolytic cell works, the diaphragm group in the electrolytic cell is lost in an electrolyte environment after long-term operation, and the disassembly of the diaphragm group in the prior art needs to correspondingly disassemble a large cover plate and a cathode group component in the electrolytic cell so as to take out the diaphragm group, so that the diaphragm group is inconvenient to overhaul; the diaphragm group can be taken out from the tank body only by moving the tank cover to directly take out the small cover plate in the large cover plate when the diaphragm group is overhauled, the operation of dismantling the large cover plate and the cathode group is avoided, the space between the carbon plate and the diaphragm is ensured by optimizing the size of the diaphragm group in the tank body, fluorine gas generated on the anode does not enter the diaphragm group, the operation safety is ensured, and the operation effect of the novel electrolytic tank for electrolyzing the hydrogen fluoride is improved.
The invention has the following beneficial effects:
1. the prepared fluorine gas and hydrogen gas are replaced by the nitrogen blowing pipe, the concentration of the gas simple substance is reduced, the safety is enhanced, the flat cooling pipe is attached to the outer wall of the tank body so as to facilitate heat conduction, the interference to the inner space of the tank body is avoided, and the utilization rate of electrolyte is increased; and the sealing box is utilized to carry out final sealing on the anode conducting rod on the tank cover, so that the sealing performance of the tank cover after being installed on the tank body is ensured.
2. The cooling device has the advantages that the cooling tubes are cooled by the side-blowing type air cooling heat dissipation effect through the fins arranged on the cooling tubes and the fans arranged at the bent parts of the cooling tubes, so that the cooling effect on the groove body is enhanced; carry out nickel plating to the surface of carbon plate and handle, prolonged the life of carbon plate, replace the copper splint through the carbon fiber splint, avoided under the state with carbon plate rigid connection and cause the damage to nickel coating.
3. According to the invention, the cathode frame is arranged in the diaphragm group, so that electrolysis products are respectively collected by the exhaust pipes on the inner side and the outer side of the diaphragm group, hydrogen generated by the cathode can completely enter the cathode cavity, and the operation safety is ensured; the small cover plate and the diaphragm are combined into a whole, so that the operation of removing the large cover plate and the cathode group is avoided when the diaphragm group is overhauled.
Drawings
The invention is further described with reference to the following figures and embodiments.
FIG. 1 is a perspective view of an electrolytic cell of the present invention;
FIG. 2 is an exploded view of the cell components of the present invention;
FIG. 3 is a cross-sectional view of a cell component of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 2 at A;
FIG. 5 is an enlarged view of a portion of FIG. 2 at B;
FIG. 6 is an enlarged view of a portion of FIG. 3 at C;
in the figure: the device comprises a tank body 1, a liquid level measuring pipe 11, a feeding pipe 12, a nitrogen blowing pipe 13, an exhaust pipe 14, a cooling pipe 15, fins 151, a fan 152, an anode group 2, a carbon plate 21, a copper hanger 22, a carbon fiber clamping plate 23, a cathode group 3, a cathode frame 31, an expansion link 311, a cathode plate 32, a damping shaft 321, a diaphragm group 4, a small cover plate 41, a large cover plate 42, a tank cover 5, an anode conducting rod 51 and a sealing box 52.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 6, the novel electrolytic cell for hydrogen fluoride electrolysis comprises a cell body 1, an anode group 2, a cathode group 3, a diaphragm group 4 and a controller; the inner space of the tank body 1 is equally divided by the diaphragm group 4, a liquid level measuring pipe 11 is also arranged on the outer wall of the tank body 1, a feeding pipe 12 is also arranged on the tank body 1 at the bottom of the liquid level measuring pipe 11, and a nitrogen blowing pipe 13 is also arranged on the tank body 1 at the top of the liquid level measuring pipe 11; the nitrogen blowing pipe 13 is respectively communicated to the inner side and the outer side of the diaphragm group 4 in the tank body 1, the outer side of the nitrogen blowing pipe 13 is also provided with an exhaust pipe 14, and the exhaust pipe 14 collects an electrolysis product in the tank body 1; the top of the tank body 1 is also provided with a tank cover 5, the tank cover 5 is also provided with an anode conducting rod 51, and the bottom of the anode conducting rod 51 is connected with the anode group 2; the tank cover 5 is in a closed state after being mounted to the tank body 1, and the anode group 2 below the tank cover 5 is immersed into electrolyte outside the diaphragm group 4 in the tank body 1; the cathode group 3 is arranged on the bottom of the tank body 1 in the diaphragm group 4; a surrounding cooling pipe 15 is further arranged on the outer side of the tank body 1, and the cooling pipe 15 is a flat pipe and is attached to the side wall of the tank body 1; the controller is used for regulating the operation of the electrolytic cell;
in the prior art, fluorine gas and hydrogen gas generated by hydrogen fluoride electrolysis need to be processed in time to ensure safety, the electrolysis process of hydrogen fluoride belongs to a heat release state and needs to be cooled in time to avoid influencing the stable electrolysis state of electrolyte in an electrolytic cell, and a cooling pipe 15 arranged in the electrolytic cell increases the volume of the electrolytic cell, damages the internal shape of the electrolytic cell and influences the electrolysis effect of the electrolyte on an electrode plate;
therefore, the invention sets the diaphragm group 4 in the tank body 1, in the process of electrolyzing hydrogen fluoride, the tank cover 5 is hermetically installed on the tank body 1, then the controller is started to control the current parameter transmitted to the anode group 2 by the conductive rod, the hydrogen fluoride in the tank body 1 is electrolyzed, and the fluorine gas and the hydrogen gas generated by electrolysis float up and gather at the inner side and the outer side of the diaphragm group 4 respectively, then the nitrogen gas introduced into the nitrogen blowing pipe 13 is used to collect the fluorine gas and the hydrogen gas in the tank body 1 along with the circulating nitrogen gas through the exhaust pipe 14, meanwhile, the heat generated in the process of electrolysis is dissipated through the cooling pipe 15 on the outer wall of the tank body 1, then the hydrogen fluoride is dissolved into the set aqueous solution, the hydrogen fluoride is supplemented from the bottom of the tank body 1 through the one-way valve in the feed pipe 12, the amount of the hydrogen fluoride in the tank body 1 is obtained through the liquid level measuring pipe 11, so that the hydrogen fluoride in the tank body 1 is in a state of submerging the diaphragm group 4, ensuring that the electrolytic process of the hydrogen fluoride is in a stable liquid level range in the tank body 1; the invention utilizes the diaphragm group 4 to equally divide the interior of the tank body 1, and the prepared fluorine gas and hydrogen gas are replaced by the nitrogen blowing pipe 13, thereby reducing the concentration of the gas simple substance and enhancing the safety, and the flat cooling pipe 15 is attached to the outer wall of the tank body 1 to facilitate the heat conduction, avoiding the interference to the inner space of the tank body 1, increasing the utilization rate of the electrolyte, and further leading the electrolyte to be in a stable electrolytic state, thereby improving the operation effect of the novel electrolytic tank for electrolyzing the hydrogen fluoride.
As an embodiment of the present invention, the tank cover 5 is further provided with a sealing box 52, the sealing box 52 is made of an insulating material and is sleeved on the anode conducting rod 51; the sealing box 52 is used for keeping the anode conducting rod 51 in a closed state on the tank cover 5; during operation, after the tank cover 5 is mounted on the tank body 1, the position of the anode group 2 needs to be controlled through the anode conducting rod 51, and the tank cover 5 is usually made of calcium fluoride sealing material, so that the problem that the tank cover is inconvenient to mount and is easy to leak under the influence of hydrogen fluoride electrolyte is solved; therefore, the invention uses the sealing box 52 to sleeve the anode conducting rod 51, and then after adjusting the position of the anode group 2 below the tank cover 5, the sealing box 52 is used to perform final sealing on the anode conducting rod 51 on the tank cover 5, so as to ensure the sealing performance of the tank cover 5 after being installed on the tank body 1, thereby maintaining the operation effect of the novel electrolytic tank for hydrogen fluoride electrolysis.
As an embodiment of the present invention, the cooling tube 15 is further provided with a fin 151, and the fin 151 is located on a surface of the cooling tube 15, which faces away from the tank 1; the cooling pipe 15 is also provided with a fan 152 at the bent part, and the axial direction of the fan 152 is parallel to the fins 151; when the electrolytic cell works, the energy release process of hydrogen fluoride electrolysis to form hydrated ions is larger than the energy required for breaking chemical bonds, so that the temperature of an electrolyte solution is increased, and the stability of the electrolysis process is influenced; through setting up fin 151 on cooling tube 15, the fan 152 at cooling tube 15 kink is installed in the cooperation, has played the air-cooled heat dissipation effect of side-blown formula to cooling tube 15, makes it superpose mutually with cooling tube 15 to the water-cooling effect of cell body 1, further strengthens the cooling effect to cell body 1, ensures that the temperature of electrolyte is in stable range to the operational effect of the novel electrolysis trough that is used for hydrogen fluoride electrolysis has been maintained.
As an embodiment of the present invention, the anode set 2 further includes a carbon plate 21, a copper hanger 22 and a carbon fiber clamping plate 23; the surface of the carbon plate 21 is subjected to nickel plating treatment; the top end of the copper hanger 22 is connected with the anode conducting rod 51 on the tank cover 5, the bottom end of the copper hanger 22 is provided with a carbon fiber clamping plate 23, and the copper hanger 22 fixes the carbon plate 21 through the carbon fiber clamping plate 23; during operation, the hydrogen fluoride material in the electrolyte has strong acidity, so that the carbon plate 21 in the anode group 2 is corroded after being used for many times, the electrolytic performance of the carbon plate 21 is weakened, and meanwhile, the copper clamping plate is easy to deform under the reaction force when the carbon plate 21 is clamped, and corrosion is generated and pollutes an electrolytic tank in the process of immersing the copper clamping plate into the hydrogen fluoride electrolyte; therefore, the invention enhances the strength, conductivity and corrosion resistance of the carbon plate 21 by performing nickel plating treatment on the surface of the carbon plate 21, greatly prolongs the service life of the carbon plate 21, can adjust the carbon plate 21 to be at the optimal distance position from the diaphragm group 4 by connecting the copper hanger 22 to the anode conducting rod 51 on the tank cover 5, and replaces the copper clamping plate with the carbon fiber clamping plate 23, thereby solving the problems of low strength and corrosion of the copper clamping plate, simultaneously, the carbon fiber clamping plate 23 has toughness, avoiding damage to the nickel plating layer in the state of being rigidly connected with the carbon plate 21, ensuring the stable state of the anode group 2 in the electrolytic process, and further improving the operation effect of the novel electrolytic tank for hydrogen fluoride electrolysis.
As an embodiment of the present invention, the cathode set 3 further includes a cathode frame 31 and a cathode plate 32; the cathode frame 31 is arranged inside the diaphragm group 4 in the tank body 1, the cathode frame 31 is connected through the telescopic rod 311 in the plane direction vertical to the diaphragm group 4, and a cathode cavity is reserved at the top of the cathode frame 31 in the diaphragm group 4; the cathode plate 32 is installed in the cathode frame 31 by a damper shaft 321 and adjusted to be inclined; when the device works, fluorine gas and hydrogen gas generated by hydrogen fluoride float up in the electrolyte solution, and if the fluorine gas and the hydrogen gas are mixed in the electrolyte solution, the purity of a product collected by the exhaust pipe 14 is damaged, and potential safety hazards are also generated; therefore, the cathode frame 31 is arranged inside the diaphragm group 4, the cathode cavity is formed inside the diaphragm group 4, electrolytic products are respectively collected by the exhaust pipes 14 on the inner side and the outer side of the diaphragm group 4, hydrogen generated by the cathode can completely enter the cathode cavity without escaping out of the diaphragm group 4, the operation safety is ensured, the cathode plate 32 arranged in the cathode frame 31 through the damping shaft 321 can adjust the deflection state of the cathode plate 32 according to the set electrolysis speed, and the distance between the cathode plate 32 and the diaphragm group 4 is adjusted by matching with the telescopic rod 311 arranged in the cathode frame 31, so that the hydrogen generated on the cathode plate 32 is smoothly discharged into the cathode cavity, and the operation effect of the novel electrolytic cell for hydrogen fluoride electrolysis is improved.
As an embodiment of the present invention, the diaphragm group 4 is an inverted U-shaped structure, and a fixed small cover plate 41 is further disposed above the diaphragm group 4; the outer side of the small cover plate 41 is also provided with a large cover plate 42, the small cover plate 41 is clamped and installed in the large cover plate 42, and the small cover plate 41 and the large cover plate 42 are respectively matched with the diaphragm group 4 and the groove body 1 in size; during operation, the diaphragm group 4 in the electrolytic cell is worn in an electrolyte environment after long-term operation, and the disassembly of the diaphragm group 4 in the prior art needs to correspondingly disassemble the large cover plate 42 and the cathode group 3 in the electrolytic cell so as to take out the diaphragm group 4, so that the diaphragm group 4 is inconvenient to overhaul; according to the invention, the small cover plate 41 is combined with the diaphragm group 4 into a whole, so that when the diaphragm group 4 is overhauled, the diaphragm group 4 can be taken out of the tank body 1 only by directly taking out the small cover plate 41 in the large cover plate 42 by moving the tank cover 5, the operation of removing the large cover plate 42 and the cathode group 3 is avoided, the distance between the carbon plate 21 and the diaphragm is ensured by optimizing the size of the diaphragm group 4 in the tank body 1, fluorine gas generated on the anode does not enter the diaphragm group 4, the operation safety is ensured, and the operation effect of the novel electrolytic tank for hydrogen fluoride electrolysis is improved.
During operation, the diaphragm group 4 in the tank body 1 is arranged, the tank cover 5 is hermetically arranged on the tank body 1 in the electrolytic process of hydrogen fluoride, then the controller is started to control the current parameter transmitted to the anode group 2 by the conductive rod, the hydrogen fluoride in the tank body 1 is electrolyzed, fluorine gas and hydrogen gas generated by electrolysis respectively float upwards and gather at the inner side and the outer side of the diaphragm group 4, then nitrogen gas is introduced into the nitrogen blowing pipe 13, the fluorine gas and the hydrogen gas in the tank body 1 along with the circulating nitrogen gas are collected by the exhaust pipe 14, meanwhile, heat generated in the electrolytic process is dissipated through the cooling pipe 15 on the outer wall of the tank body 1, then the hydrogen fluoride is dissolved into a set aqueous solution, the hydrogen fluoride is supplemented from the bottom of the tank body 1 through the one-way valve in the feeding pipe 12, the liquid level of the hydrogen fluoride in the tank body 1 is obtained through the measuring pipe 11, and the water solution in the tank body 1 is in a state that the diaphragm group 4 is submerged by the water solution, ensuring that the electrolytic process of the hydrogen fluoride is in a stable liquid level range in the tank body 1; the arranged sealing box 52 is sleeved on the anode conducting rod 51, and then after the position of the anode group 2 below the tank cover 5 is adjusted, the sealing box 52 is utilized to carry out final sealing on the anode conducting rod 51 on the tank cover 5, so that the sealing performance of the tank cover 5 after being installed on the tank body 1 is ensured; the fins 151 arranged on the cooling pipe 15 are matched with the fan 152 arranged at the bent part of the cooling pipe 15, so that the cooling pipe 15 is subjected to side-blowing type air cooling heat dissipation effect, the cooling pipe 15 and the water cooling effect of the cooling pipe 15 on the tank body 1 are superposed, the cooling effect on the tank body 1 is further enhanced, and the temperature of the electrolyte is ensured to be within a stable range; the surface of the carbon plate 21 is subjected to nickel plating, so that the strength, the conductivity and the corrosion resistance of the carbon plate 21 are enhanced, the service life of the carbon plate 21 is greatly prolonged, the carbon plate 21 can be adjusted to be at the optimal distance position from the diaphragm group 4 by connecting the copper hanger 22 to the anode conducting rod 51 on the tank cover 5, and the carbon fiber clamping plate 23 replaces the copper clamping plate, so that the problems of low strength and corrosion of the copper clamping plate are solved, meanwhile, the carbon fiber clamping plate 23 has toughness, the nickel plating layer is prevented from being damaged in the hard connection state with the carbon plate 21, and the stable state of the anode group 2 in the electrolysis process is ensured; the cathode frame 31 is arranged in the diaphragm group 4, a cathode cavity is formed in the diaphragm group 4, electrolytic products are respectively collected by the exhaust pipes 14 on the inner side and the outer side of the diaphragm group 4, hydrogen generated by the cathode can completely enter the cathode cavity and does not escape out of the diaphragm group 4, the operation safety is ensured, the cathode plate 32 arranged in the cathode frame 31 through the damping shaft 321 can adjust the deflection state of the cathode plate 32 according to the set electrolysis rate, and the distance between the cathode plate 32 and the diaphragm group 4 is adjusted by matching with the telescopic rod 311 arranged in the cathode frame 31, so that the hydrogen generated on the cathode plate 32 is smoothly discharged into the cathode cavity; the small cover plate 41 is arranged to be integrated with the diaphragm group 4, and then when the diaphragm group 4 is overhauled, the diaphragm group 4 can be taken out from the tank body 1 only by moving the small cover plate 41 in the large cover plate 42 directly out of the tank cover 5, so that the operation of detaching the large cover plate 42 and the cathode group 3 is avoided, the size of the diaphragm group 4 in the tank body 1 is optimized, the distance between the carbon plate 21 and the diaphragm is ensured, fluorine gas generated on the anode does not enter the diaphragm group 4, and the operation safety is ensured.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A novel electrolytic tank for hydrogen fluoride electrolysis comprises a tank body (1), an anode group (2), a cathode group (3), a diaphragm group (4) and a controller; the method is characterized in that: the inner space of the tank body (1) is uniformly divided by the diaphragm group (4), a liquid level measuring pipe (11) is also arranged on the outer wall of the tank body (1), a feeding pipe (12) is also arranged on the tank body (1) at the bottom of the liquid level measuring pipe (11), and a nitrogen blowing pipe (13) is also arranged on the tank body (1) at the top of the liquid level measuring pipe (11); the nitrogen blowing pipe (13) is respectively communicated to the inner side and the outer side of the diaphragm group (4) in the tank body (1), an exhaust pipe (14) is further arranged on the outer side of the nitrogen blowing pipe (13), and the exhaust pipe (14) collects electrolysis products in the tank body (1); the top of the tank body (1) is also provided with a tank cover (5), the tank cover (5) is also provided with an anode conducting rod (51), and the bottom of the anode conducting rod (51) is connected with the anode group (2); the tank cover (5) is in a closed state after being mounted to the tank body (1), and the anode group (2) below the tank cover (5) is immersed into electrolyte outside the diaphragm group (4) in the tank body (1); the cathode group (3) is arranged on the bottom of the groove body (1) in the diaphragm group (4); a surrounding cooling pipe (15) is further arranged on the outer side of the tank body (1), and the cooling pipe (15) is a flat pipe and is attached to the side wall of the tank body (1); the controller is used for regulating the operation of the electrolytic cell;
the cathode group (3) further comprises a cathode frame (31) and a cathode plate (32); the cathode frame (31) is arranged inside the diaphragm group (4) in the tank body (1), the cathode frame (31) is connected through a telescopic rod (311) in the plane direction perpendicular to the diaphragm group (4), and a cathode cavity is reserved at the top of the cathode frame (31) in the diaphragm group (4); the cathode plate (32) is installed in the cathode frame (31) through a damping shaft (321) and adjusted to be in an inclined state;
the membrane group (4) is of an inverted U-shaped structure, and a fixed small cover plate (41) is arranged above the membrane group (4); the outer side of the small cover plate (41) is further provided with a large cover plate (42), the small cover plate (41) is clamped and installed in the large cover plate (42), and the small cover plate (41) and the large cover plate (42) are respectively matched with the diaphragm group (4) and the groove body (1) in size.
2. A novel electrolytic cell for the electrolysis of hydrogen fluoride according to claim 1, characterized in that: the tank cover (5) is also provided with a sealing box (52), and the sealing box (52) is made of insulating materials and is sleeved on the anode conducting rod (51); the sealing box (52) is used for keeping the anode conducting rod (51) in a sealed state on the tank cover (5).
3. A novel electrolytic cell for the electrolysis of hydrogen fluoride according to claim 1, characterized in that: the cooling pipe (15) is also provided with fins (151), and the fins (151) are positioned on the surface, back to the tank body (1), of the cooling pipe (15); the cooling pipe (15) is also provided with a fan (152) at the bent part, and the axial direction of the fan (152) is parallel to the fins (151).
4. A novel electrolytic cell for the electrolysis of hydrogen fluoride according to claim 1, characterized in that: the anode group (2) further comprises a carbon plate (21), a copper hanger (22) and a carbon fiber clamping plate (23); the surface of the carbon plate (21) is subjected to nickel plating treatment; the top end of the copper hanger (22) is connected with the anode conducting rod (51) on the groove cover (5), the carbon fiber clamping plate (23) is installed on the bottom end of the copper hanger (22), and the carbon plate (21) is fixed by the copper hanger (22) through the carbon fiber clamping plate (23).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110221655.1A CN113026034B (en) | 2021-02-27 | 2021-02-27 | Novel electrolytic tank for hydrogen fluoride electrolysis |
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| CN202110221655.1A CN113026034B (en) | 2021-02-27 | 2021-02-27 | Novel electrolytic tank for hydrogen fluoride electrolysis |
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| CN113026034B true CN113026034B (en) | 2022-02-01 |
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| CN2895439Y (en) * | 2006-03-22 | 2007-05-02 | 李�荣 | Medium-temperature fluorine-making electrolytic tank |
| CN200992578Y (en) * | 2006-11-30 | 2007-12-19 | 国营八一四厂 | 10kA carbon steel medium temperature fluorine preparation electrolytic tank |
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| CN113026034A (en) | 2021-06-25 |
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Address after: No. 6, Gongye Road, Jiaoyang industrial concentration zone, Jiaoyang Town, Shanghang County, Longyan City, Fujian Province, 364204 Patentee after: Fujian del Technology Co.,Ltd. Address before: No. 6, Gongye Road, Jiaoyang industrial concentration zone, Jiaoyang Town, Shanghang County, Longyan City, Fujian Province, 364000 Patentee before: FUJIAN DEER TECHNOLOGY CO.,LTD. |