CN111455436A - Metal electrodeposition electrolytic tank with cap-shaped cover anode plate acid mist collecting function - Google Patents

Metal electrodeposition electrolytic tank with cap-shaped cover anode plate acid mist collecting function Download PDF

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CN111455436A
CN111455436A CN202010104399.3A CN202010104399A CN111455436A CN 111455436 A CN111455436 A CN 111455436A CN 202010104399 A CN202010104399 A CN 202010104399A CN 111455436 A CN111455436 A CN 111455436A
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acid mist
cap
anode plate
air suction
cover
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CN111455436B (en
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李济吾
林建平
徐关峰
蔡伟建
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Hangzhou Sanal Environmental Technology Co ltd
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Zhejiang Gongshang University
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    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C25D17/02—Tanks; Installations therefor
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D17/00—Constructional parts, or assemblies thereof, of cells for electrolytic coating
    • C25D17/10—Electrodes, e.g. composition, counter electrode
    • C25D17/12—Shape or form
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D21/00—Processes for servicing or operating cells for electrolytic coating
    • C25D21/04—Removal of gases or vapours ; Gas or pressure control

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  • Electrochemistry (AREA)
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  • Electrolytic Production Of Metals (AREA)

Abstract

The invention discloses a metal electrodeposition electrolytic tank with a cap-shaped cover anode plate acid mist collecting function, which belongs to the technical field of metal electrodeposition electrolytic acid mist collection and comprises a tank body with air suction ports formed in two sides, wherein an anode plate and a cathode plate are arranged in the tank body at intervals. The acid mist generated in the electrolytic process can be effectively collected, the problem that the acid mist generated in the electrolytic process is inorganically discharged, pollutes the air of a workshop environment and corrodes equipment is avoided, the working environment is improved, and the device has the advantages of high efficiency, energy conservation and environmental protection.

Description

Metal electrodeposition electrolytic tank with cap-shaped cover anode plate acid mist collecting function
Technical Field
The invention relates to the technical field of metal electrodeposition electrolytic acid mist collection, in particular to a metal electrodeposition electrolytic tank with a cap-shaped cover anode plate acid mist collection function.
Background
At present, acid mist of a metal electrodeposition electrolysis system in the smelting industry pollutes the air of a workshop seriously, directly harms personal health and corrodes equipment, pollutes the surrounding environment, troubles the industry development all the time, is an industrial problem and needs to be solved urgently. Acid mist of an electrolysis plant in the smelting industry is caused by surface forces such as splashing, explosion of bubbles (O2, H2 and the like) generated by electrolysis and the like, and the particle diameter of the acid mist is generally between 1 and 50 mu m; most of the droplets formed by volatilization have a diameter of 1 μm or less, and form aerosol, which is more difficult to handle. The aerosol is a colloid dispersion system formed by dispersing and suspending small solid or liquid particles in a gas medium, and the particle size of the aerosol is 0.001-100 mu m, so that the acid mist belongs to the aerosol and is not easy to disperse for a long time when suspended in the air. The national sanitary standard stipulates that zinc, copper and other electrolytic vehicle rooms contain acid mist in the air<2mg/m3At present, most enterprises are difficult to reach the standard, and acid mist not only pollutes the operating environment, but also has certain corrosion to cathode and anode conductive heads, plants, equipment and the like. This can cause harm to the physical and mental health of field workers, cause corrosion to equipment, and cause long-term adverse effects on enterprise image and surrounding environment.
Hitherto, the treatment of electrolytic acid mist at home and abroad comprises two parts of acid mist collection and purification treatment. The collection of the acid mist comprises workshop closed collection and single-groove closed collection. The main methods for purifying the acid mist comprise: mechanical ventilation (plant top, side, trough), acid mist inhibitor, plastic pellet cover, other material cover, ventilation defogging, electrostatic defogging, water spray absorption, etc.
At present, the collection method for preventing and treating the electrolytic acid mist generally adopts the whole electrolytic cell to perform closed air extraction, an air extraction pipe extends into the electrolytic cell body from the upper part of the opening of the electrolytic cell body to perform air extraction, the effect is better that an electrolytic cell closed cover is arranged on the electrolytic cell, because the electrolytic cell closed cover needs to be opened frequently, an air extraction pipe opening can only extend into the electrolytic cell cover from the upper part of the end edge of the electrolytic cell, but the air extraction end of the air extraction pipe is not solid. For example, a gas collecting device of an electrolysis and electrodeposition tank disclosed in chinese patent publication No. CN110344085A is a tank body sealing device; chinese patent publication No. CN203999839U discloses an acid mist collecting device for wet-process copper recovery, which is provided with a gas-collecting hood with a trapezoidal cross section above an electrolytic bath, and an air outlet pipe is arranged on one side of the gas-collecting hood; chinese patent publication No. CN102618890A discloses an electrolytic cell cover for preventing and treating acid mist, wherein a sealing cover made of glass fiber reinforced plastic is generally added on the electrolytic cell cover to collect acid mist in a sealing manner, because the electrolytic cell cover needs to be opened frequently, the air exhaust pipe opening can only extend into the electrolytic cell cover from the upper side of the electrolytic cell end, but the air exhaust end of the air exhaust pipe is not fixed, which increases the labor intensity of workers and affects the production efficiency and the acid mist collection effect. Chinese patent publication No. CN110373686A discloses a method and a system for reducing acid mist source on the surface of an electrolytic plant, which only can reduce the amount of acid mist generated during the electrolysis process, but cannot completely control the pollution of the acid mist.
Chinese patent publication No. CN201826033U discloses an acid mist exhaust structure of an electrolytic cell with an exhaust opening arranged on a convex edge of the electrolytic cell, which at least comprises an electrolytic cell with an exhaust opening, a cell cover, an exhaust branch pipe and an exhaust main pipe, wherein the upper part of the end surface of the electrolytic cell body with the exhaust opening is additionally provided with an exhaust convex edge, and the exhaust convex edge is provided with a vertical exhaust opening; a nut or a bolt for installing and connecting the air exhaust branch pipe is embedded under the air exhaust convex edge or an extended pipe section is embedded in the air exhaust opening; the groove cover completely covers the air pumping hole to form a complete closed space. Chinese patent publication No. CN205974690U discloses an electrolytic cell device and an electrolytic acid mist treatment method using the same, which includes at least three electrolytic cell bodies and a tube body located at the bottom of the electrolytic cell bodies, the electrolytic cell bodies are arranged at intervals, a channel is formed between two adjacent electrolytic cell bodies, the bottom and two sides of each channel are closed structures, the upper end of each channel is provided with a first opening, the lower end of the bottom of each channel is provided with a second opening, and the tube body is provided with a through hole and is connected with the second opening of the channel through the through hole. The acid mist collection control method controls acid mist through suction, but because the notch is open, the groove surface is wide, suction is uneven, the suction distance is short, and a closed cover on the groove is not available, the acid mist control effect is not ideal.
There are 3 main ways of adopting mechanical ventilation at home and abroad: mechanical ventilation plus natural exhaust, natural intake plus mechanical exhaust, natural intake plus natural exhaust. And the electrolysis plants in China mostly adopt the modes of mechanical ventilation and natural air exhaust or natural air intake and natural air exhaust. Because the span of the factory building is large, the air inlet area is limited, the outdoor unorganized air flow interferes, and the natural air exhaust and ventilation effects are not good. The process cooling tower fan is used for mechanically exhausting air in a workshop, the effect is not ideal, and the energy consumption is large.
The method for purifying the electrolytic acid mist is difficult to control for a large-scale electrolytic cell, for example, the electrostatic demisting method and the water spraying method are easy to influence the normal production of the electrolytic cell, the acid mist removing efficiency by the ventilation method is low, and the method needs to be matched with other methods for use; for the zinc electrolysis process, the coverage rate of the plastic pellets is over 98 percent, which easily causes the temperature of the electrolyte to be over high, and the coverage rate is less than 95 percent, which only has about 70 percent of acid mist inhibition effect. Therefore, the plastic pellets still need to be matched with a cheap and good acid mist inhibitor to be applied in a large zinc electrolytic cell workshop, and the acid mist inhibition effect can be optimal. Therefore, electrolytic acid mist always troubles the development of the industry and is an industry difficult problem which is difficult to solve.
The main equipment of the zinc, copper and other electrolytic plants is an electrolytic cell, which is usually several or dozens of electrolytic cells arranged in a row, the electrolytic cell solution contains sulfuric acid, when the plants are normally produced, the temperature of the electrolyte is 90-100 ℃, the electrochemical reaction is a heat release process, the temperature of the electrolyte is continuously raised, so that a great amount of sulfuric acid molecules are drifted to the air of a workshop, the use of high-temperature heating steam in the production process increases the speed of the sulfuric acid molecules diffusing from a liquid phase to a gas phase, so that the acid mist of the workshop is turbulent, the sulfuric acid mist is driven by the hot steam to be disorderly drifted to the interior and the periphery of the workshop, the sulfuric acid mist in the electrolysis workshop also causes the air in the factory to form an acid environment, the acid mist collector can cause serious corrosion to buildings, production equipment and the like in a workshop in a factory, thereby greatly influencing the safe production, and the collection of the acid mist in an electrolysis workshop is particularly important.
The electrolytic acid mist is difficult to treat, but the main reason is that the acid mist is discharged disorderly and is difficult to collect effectively. Since the gases generated during the electrolysis in the workshop of the currently used electrolysis cells are not effectively collected, the subsequent treatment is more difficult to talk about. The electrolytic cell used in the wet smelting at present has a simple structure and no electrolytic acid mist collecting function, and the workshop site of the electrolytic cell does not have an acid mist collecting device with redundant space arrangement, so that the acid mist generated by electrolysis is discharged in an unorganized manner, and the electrolytic cell can permeate the electrolysis workshop, especially needs to be organized to collect and control the acid mist, lays a foundation for the subsequent purification and treatment of the acid mist, and fundamentally solves the problem of electrolytic acid mist pollution. The problem of acid mist pollution cannot be effectively solved by adopting conventional workshop sealing and workshop ventilation. Therefore, a new method for solving the problem of acid mist pollution needs to be provided.
Disclosure of Invention
The invention aims to provide a metal electrodeposition electrolytic cell with a cap-shaped cover anode plate acid mist collecting function, which can effectively collect acid mist generated in an electrolysis process, avoid the unorganized emission of the acid mist generated in the electrolysis process, pollute the air in a workshop and corrode equipment, improve the working environment and have the advantages of high efficiency, energy conservation and environmental protection.
In order to achieve the purpose, the metal electrodeposition electrolytic tank with the cap-shaped cover anode plate acid mist collection function comprises a tank body, air suction ports are formed in two sides of the tank body, and an anode plate and a cathode plate are arranged in the tank body at intervals.
In the technical scheme, the tank body is made of vinyl quartz resin composite materials with good insulating property and high strength, and the length, the width and the height of the tank body can be determined according to practical application. The two sides of the long side of the tank body are respectively 20-30 mm away from the top edge, rectangular air suction holes with the specification of width (30-40) mm (40-50) mm are formed in the center line of the corresponding anode plate, and the number of the rectangular air suction holes is determined according to the length of the tank body, the arrangement number of the anode plates and the distance between the anode plates and the cathode plates. The gas generated by the anode plate in the electrolysis process and the acid mist formed by the explosion of bubbles rising to the liquid surface are collected by utilizing the closed space, so thatThe electrolytic acid mist gas is led out through the air suction port and can be conveyed to the purification tower through the induced draft fan for acid mist purification treatment. In order to ensure the acid mist collection control effect of the micro-closed cover, the total air suction amount of the single groove depends on the length of the groove body, and the air suction amount of each air suction hole is about 10-30 m3H is used as the reference value. Effectively collect the acid mist that the electrolysis process produced, avoid the acid mist that the electrolysis process produced inorganization to discharge, pollute workshop environment air and corrosion equipment, improve operational environment, have energy-efficient environmental protection's advantage.
Preferably, the cathode plate consists of a supporting beam and an electrodeposition electrode plate, the specification is matched with the width and the height of the anode plate and the cell body, and the external dimension is determined by the sizes of the electrolytic cell and the anode plate.
Preferably, the tank body is provided with air suction hoods at both sides of the tank body where the air suction ports are opened, and the collected acid mist is sent into the air suction hoods at both sides through the air suction ports.
Preferably, the air suction cover is connected with a recovery tank, and the acid mist liquid entering the recovery tank is conveyed to the purification tower through the induced draft fan to be subjected to acid mist purification treatment.
Preferably, the recovery tank is arranged at the near end of the air suction pipe at the lower part of the air suction cover, which is far away from the induced draft fan, and acid mist liquid settled in the air suction cover is collected so as to prevent a large amount of acid mist liquid from entering the induced draft fan to influence the operation of the fan.
In order to make the air volume of each air suction opening basically consistent and ensure the air suction control acid mist effect, the lower part of the air suction cover is preferably provided with a horn-shaped uniform air distribution device.
Preferably, the material of the air suction cover is an insulating engineering plastic plate with the thickness of 3-5 mm. According to the more of the number of the electrolysis trough of practical application, can share between two cell bodies and use a cover of breathing in, the thickness of the cover of breathing in can be according to the cell body and arrange and decide, generally is 30 ~ 200 mm.
Preferably, the cap-shaped cover comprises a cap top and a floating pipe, the electrolyte level in the tank body reaches the floating pipe of the cap-shaped cover, and pipe openings at two ends of the floating pipe are closed.
Preferably, the middle of the crown is thick, the two sides of the crown are thin, the thickness of the middle is 3-4 mm, and the thickness of the two sides is 1-2 mm; the outer diameter of the floating pipe is 8-10 mm, and the wall thickness is 2-3 mm.
Preferably, the cap-shaped cover is made of plastic or rubber with good insulating property. Has certain elasticity, and can move outwards to approach the surface of the cathode plate under the action of acid mist pressure during electrolysis.
In order to ensure that the acid mist collected in the closed space formed by the cap-shaped cover and the liquid level of the electrolytic cell does not escape, the air suction amount is reduced as much as possible, the collection effect of the electrolytic acid mist is ensured, the anode plate taking and placing maintenance operation is not influenced, and preferably, the distance between the two ends of the cap-shaped cover and the gap at the edge of the cell body is 1-3 mm.
Compared with the prior art, the invention has the beneficial effects that:
(1) the device of the invention forms a micro-closed space by the anode plate with the cap-shaped cover and the liquid level of the electrolyte in the electrolytic cell, acid mist cannot escape, acid mist gas is sent into the two side air suction covers through the air suction ports positioned on the center lines of the anode plates at the two sides of the electrolytic cell body, and finally the acid mist gas is conveyed to the purification tower through the induced draft fan for acid mist purification treatment. The acid mist waste gas generated in the electrolysis process is changed from unorganized discharge into organized discharge, the acid mist is not escaped and is completely collected and controlled, the acid mist waste gas collection efficiency is high, the problems that the acid mist waste gas generated in the working process of a conventional electrolysis workshop seriously pollutes the environment, corrodes equipment and the like are solved, the working environment is greatly improved, and meanwhile, the working efficiency is also improved.
(2) The device adopts a micro-closed space formed by the anode plate with the cap-shaped cover and the liquid level of the electrolyte in the electrolytic cell to collect the acid mist waste gas, replaces the existing acid mist control methods such as mechanical ventilation or natural ventilation and the like, can greatly reduce the exhaust air volume of the acid mist control by over 70 percent, reduce the treatment capacity of the acid mist waste gas and greatly reduce the energy consumption for treating the acid mist.
(3) The device has the advantages of good acid mist collecting effect, difficult overflow of acid mist waste gas, simple structure, economy, effectiveness, long service life and convenience in manufacturing, installation and maintenance.
Drawings
FIG. 1 is a schematic view of the structure of an electrolytic cell in an embodiment of the present invention;
FIG. 2 is a schematic view of the installation of an anode plate with a cap-shaped cover in an embodiment of the invention;
FIG. 3 is a schematic structural view of an anode plate with a cap-shaped cover according to an embodiment of the present invention;
FIG. 4 is a schematic view of the installation of an anode plate with a cap-shaped cover in an embodiment of the invention;
FIG. 5 is a schematic structural view of a metal electrodeposition cathode plate in an embodiment of the present invention;
FIG. 6 is a schematic view of the mounting of the suction hood in an embodiment of the present invention;
FIG. 7 is an enlarged view of a portion of FIG. 6;
FIG. 8 is a schematic diagram of the arrangement of the anode plate and the cathode plate according to the embodiment of the present invention;
fig. 9 is a schematic arrangement diagram of an anode plate and a cathode plate in the embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described with reference to the following embodiments and accompanying drawings.
Example 1
Referring to fig. 1, the metal electrodeposition electrolytic cell with the function of collecting acid mist on the anode plate with the cap-shaped cover of the embodiment includes a cell body 1 with air suction ports formed on two sides, an anode plate 2 with the cap-shaped cover, a metal electrodeposition cathode plate 3, a right air suction cover 4, a left air suction cover 5, and an acid mist liquid recovery tank 6.
The external dimension of the groove body 1 with the air suction ports arranged on the two sides is 11000mm in length, 1530mm in width and 2370mm in height. Rectangular air suction ports are uniformly distributed at the top ends of the long sides of the two sides at a distance of 25-30 mm along the edge direction, the width and the height of each rectangular air suction port are 30mm and 40mm, the distance between the center lines of the air suction ports is 90mm, and the total number of the air suction holes is 118.
The structure of the anode plate 2 with the cap-shaped cover is shown in figures 2, 3 and 4, the cap-shaped cover consists of a cap top and a floating tube, is made of plastic or rubber with good insulating property, has certain elasticity, and can move outwards to be close to the surface of the cathode plate under the action of acid mist air pressure during electrolysis; the middle of the crown is thick, the average thickness is 3-4 mm, and the two sides are thin (1-2 mm); the outer diameter of the floating pipe is 8-10 mm, the wall thickness is 2-3 mm, and pipe orifices at two ends are closed.
In order to ensure that the acid mist collected in a micro-closed space formed by the cap-shaped cover and the liquid level of the electrolytic cell does not escape, reduce the air suction amount as much as possible and ensure the acid mist collection effect, the two ends of the cap-shaped cover are respectively 1-3 mm away from the gap of the long edge of the cell body. In order to ensure the acid mist collection control effect of the micro-closed cover, the total air suction amount of the single-groove depends on the length of the groove body, and the air suction amount of each orifice is 10-20 m3/h。
The metal electrodeposition cathode plate 3 consists of a supporting beam and an electrodeposition electrode plate, the specification of the metal electrodeposition cathode plate is matched with the width and the height of the anode plate and the tank body, the appearance characteristics of the metal electrodeposition cathode plate are shown in figure 5, and the appearance size of the metal electrodeposition cathode plate is determined by the sizes of the electrolytic tank and the anode plate.
The right side air suction cover 4 and the left side air suction cover 5 are respectively composed of an air suction opening, an air suction horn air equalizing device, an air suction straight pipe and the like, referring to fig. 6 and 7, the upper air suction opening is correspondingly arranged according to the air suction openings at the two sides of the groove body and is tightly connected with the groove body, and air leakage is avoided. According to the more of the number of practical application electrolysis trough, can share one between two cell bodies and inhale the cover, the thickness of inhaling the cover is according to the cell body and arranges and decide, generally is 30 ~ 60 mm.
The acid mist liquid recovery tank 6 is arranged at the nearest end of the air suction pipe at the lower part of the air suction cover and away from the fan, and collects acid mist liquid settled in the cover so as to prevent a large amount of acid mist liquid from entering the air suction fan to influence the operation of the fan. The device is cylindrical, the diameter of the device is 300mm, the height of the device is 350mm, and a discharge pipe is arranged on the lower end face of the device.
When the electrolytic cell is used, the anode plate with the flexible cap-shaped cover is arranged on the anode guide rails on the two sides of the cell body, the metal electrodeposition cathode plate is arranged on the cathodes on the two sides of the cell body, the center line of the anode plate is aligned with the center line of the air suction hole, the cell body of the electrolytic cell is filled with electrolyte, the height of the electrolyte level reaches the floating pipe of the cap-shaped cover, and the anode plate with the cap-shaped cover and the electrolyte level of the electrolytic cell form a micro-closed space. The anode plates and cathode plates were arranged in staggered rows with equal spacing from the centerline 45mm, see fig. 8 and 9. When the nonferrous metal zinc electrolysis works, acid mist waste gas generated by electrolysis is accumulated in the micro-closed space, and the collected electrolysis acid mist waste gas is collected through the air inlets at the two sides of the tank bodyThe air is sucked into the air suction covers on the two sides, and is exhausted into the acid mist purification tower through the air exhaust pipe at the bottom of the air suction cover through the air suction fan to be purified, and is exhausted after reaching the standard. The total air suction amount of the single-groove acid mist collecting system is 1180-2360 m3The acid mist waste gas collection rate reaches 100 percent, the concentration of the acid mist in the air in the electrolysis workshop is very low, and the requirement of the indoor air quality of the electrolysis workshop is met. In the embodiment, a micro-closed space is formed by the anode plate with the cap-shaped cover and the electrolyte liquid level of the electrolytic cell, gas generated by the anode plate in the electrolytic process and acid mist formed by the explosion of bubbles rising to the liquid level are controlled and collected, the acid mist does not escape, the acid mist gas is sent into the two side air suction covers through the air suction ports positioned on the center lines of the anode plates at the two sides of the electrolytic cell body, and finally the acid mist is conveyed to the purification tower through the induced draft fan for acid mist purification treatment. The acid mist waste gas generated in the electrolysis process is changed from unorganized discharge into organized discharge, the acid mist does not escape, the acid mist waste gas collection efficiency is high, the problems that the acid mist waste gas generated in the conventional electrolysis workshop during working seriously pollutes the environment, corrodes equipment and the like are solved, the working environment is greatly improved, and meanwhile, the working efficiency is also improved. The method replaces the existing method for controlling acid mist by mechanical ventilation or natural ventilation, can greatly reduce the exhaust air quantity by more than 70 percent, reduce the treatment capacity of acid mist waste gas and greatly reduce the energy consumption for treating acid mist.
Example 2
Referring to fig. 1, the metal electrodeposition electrolytic cell with the function of collecting acid mist on the anode plate with the cap-shaped cover of the embodiment includes a cell body 1 with air suction ports formed on two sides, an anode plate 2 with the cap-shaped cover, a metal electrodeposition cathode plate 3, a right air suction cover 4, a left air suction cover 5, and an acid mist liquid recovery tank 6.
The overall dimension of the tank body 1 with the air suction ports arranged on the two sides is 6500mm in length, 1460mm in width and 2260mm in height. Rectangular air suction ports are uniformly distributed at the top ends of the long sides of the two sides at a distance of 25-30 mm along the edge direction, the width and the height of each rectangular air suction port are 35mm and 40mm, the distance between the central lines of the air suction ports is 90mm, and 58 air suction holes are formed in total.
The structure of the anode plate 2 with the cap-shaped cover is shown in figures 2, 3 and 4, the cap-shaped cover consists of a cap top and a floating tube, is made of plastic or rubber with good insulating property, has certain elasticity, and can move outwards to be close to the surface of the cathode plate under the action of acid mist air pressure during electrolysis; the middle of the crown is thick, the average thickness is 3-5 mm, and the two sides are thin (1-2 mm); the outer diameter of the floating pipe is 8-10 mm, the wall thickness is 2-3 mm, and pipe orifices at two ends are closed.
In order to ensure that the acid mist collected in a micro-closed space formed by the cap-shaped cover and the liquid level of the electrolytic cell does not escape, reduce the air suction amount as much as possible and ensure the acid mist collection effect, the two ends of the cap-shaped cover are respectively 1-2 mm away from the gap of the long edge of the cell body. In order to ensure the acid mist collection control effect of the micro-closed cover, the total air suction amount of the single groove depends on the length of the groove body, and the air suction amount of each orifice is 15-25 m3/h。
The metal electrodeposition cathode plate 3 consists of a supporting beam and an electrodeposition electrode plate, the specification of the metal electrodeposition cathode plate is matched with the width and the height of the anode plate and the tank body, the appearance characteristics of the metal electrodeposition cathode plate are shown in figure 5, and the appearance size of the metal electrodeposition cathode plate is determined by the sizes of the electrolytic tank and the anode plate.
The right side air suction cover 4 and the left side air suction cover 5 are respectively composed of an air suction opening, an air suction horn air equalizing device, an air suction straight pipe and the like, referring to fig. 6 and 7, the upper air suction opening is correspondingly arranged according to the air suction openings at the two sides of the groove body and is tightly connected with the groove body, and air leakage is avoided. According to the more of the number of practical application electrolysis trough, can share one between two cell bodies and inhale the cover, the thickness of inhaling the cover is according to the cell body and arranges and decide, generally is 50 ~ 100 mm.
The acid mist liquid recovery tank 6 is arranged at the nearest end of the air suction pipe at the lower part of the air suction cover and away from the fan, and collects acid mist liquid settled in the cover so as to prevent a large amount of acid mist liquid from entering the air suction fan to influence the operation of the fan. The device is cylindrical, the diameter of the device is 300mm, the height of the device is 350mm, and a discharge pipe is arranged on the lower end face of the device.
When the electrolytic cell is used, the anode plate with the flexible cap-shaped cover is arranged on the anode guide rails on the two sides of the cell body, the metal electrodeposition cathode plate is arranged on the cathodes on the two sides of the cell body, the center line of the anode plate is aligned with the center line of the air suction hole, the cell body of the electrolytic cell is filled with electrolyte, the height of the electrolyte level reaches the floating pipe of the cap-shaped cover, and the anode plate with the cap-shaped cover and the electrolyte level of the electrolytic cell form a micro-closed empty spaceAnd (3) removing the solvent. The anode plates and cathode plates were arranged in staggered rows with equal spacing from the centerline 45mm, see fig. 8 and 9. When the nonferrous metal zinc electrolysis works, acid mist waste gas generated by electrolysis accumulates in a micro-closed space, collected electrolysis acid mist waste gas is sucked into the air suction covers on the two sides through the air suction ports on the two sides of the tank body, and is discharged into the acid mist purification tower through the exhaust pipe at the bottom of the air suction cover through the air suction fan to be purified and discharged after reaching the standard. The total air suction amount of the single-groove acid mist collecting system is 870-1450 m3The acid mist waste gas collection rate reaches 100 percent, the concentration of the acid mist in the air in the electrolysis workshop is very low, and the requirement of the indoor air quality of the electrolysis workshop is met. In the embodiment, a micro-closed space is formed by the anode plate with the cap-shaped cover and the electrolyte liquid level of the electrolytic cell, gas generated by the anode plate in the electrolytic process and acid mist formed by the explosion of bubbles rising to the liquid level are controlled and collected, the acid mist does not escape, the acid mist gas is sent into the two side air suction covers through the air suction ports positioned on the center lines of the anode plates at the two sides of the electrolytic cell body, and finally the acid mist is conveyed to the purification tower through the induced draft fan for acid mist purification treatment. The acid mist waste gas generated in the electrolysis process is changed from unorganized discharge into organized discharge, the acid mist does not escape, the acid mist waste gas collection efficiency is high, the problems that the acid mist waste gas generated in the conventional electrolysis workshop during working seriously pollutes the environment, corrodes equipment and the like are solved, the working environment is greatly improved, and meanwhile, the working efficiency is also improved. The method replaces the existing method for controlling acid mist by mechanical ventilation or natural ventilation, can greatly reduce the exhaust air volume by over 75 percent, reduce the treatment capacity of acid mist waste gas and greatly reduce the energy consumption for treating acid mist.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a take cap form cover anode plate acid mist to collect metal electrodeposition electrolysis trough of function, includes that the cell body of induction port is seted up to both sides, interval arrangement has anode plate and negative plate in the cell body, its characterized in that, be equipped with the cap form cover on the anode plate, be equipped with the anode plate of cap form cover with airtight space is constituteed to the electrolysis liquid level in the cell body, rises to the liquid level to the gas that the anode plate produced among the electrolytic process and bubble and bursts and the acid mist that forms collects.
2. The metal electrodeposition electrolytic cell with the function of collecting acid mist of the anode plate with the cap-shaped cover according to claim 1, wherein the cell body is provided with air suction covers on both sides provided with air suction ports, and the collected acid mist is sent into the air suction covers on both sides through the air suction ports.
3. The metal electrodeposition electrolytic cell with the cap-shaped cover anode plate acid mist collecting function according to claim 2, wherein the gas suction cover is connected with a recovery tank, and acid mist liquid entering the recovery tank is conveyed to a purification tower through a draught fan for acid mist purification treatment.
4. The metal electrodeposition electrolytic cell with the acid mist collecting function of the cap-shaped cover anode plate of claim 3, wherein the recovery tank is arranged at the near end of the air suction pipe at the lower part of the air suction cover away from the induced draft fan, and is used for collecting acid mist liquid settled in the air suction cover so as to prevent a large amount of acid mist liquid from entering the induced draft fan to influence the operation of the fan.
5. The metal electrodeposition electrolytic cell with the cap-shaped cover anode plate acid mist collecting function as claimed in claim 2, wherein the lower part of the air suction cover is provided with a trumpet-shaped uniform air distribution device.
6. The metal electrodeposition electrolytic cell with the function of collecting acid mist of the anode plate with the cap-shaped cover according to claim 2, wherein the material of the air suction cover is an insulating engineering plastic plate with a thickness of 3-5 mm.
7. The metal electrodeposition electrolytic cell with the cap-shaped cover anode plate acid mist collecting function according to claim 1, wherein the cap-shaped cover comprises a cap top and a floating pipe, the electrolyte level in the cell body reaches the floating pipe of the cap-shaped cover, and pipe openings at two ends of the floating pipe are closed.
8. The metal electrodeposition electrolytic cell with the acid mist collecting function of the cap-shaped anode plate of claim 7, wherein the cap top has a thick middle part and thin two sides, the middle part has a thickness of 3-4 mm, and the two sides have a thickness of 1-2 mm; the outer diameter of the floating pipe is 8-10 mm, and the wall thickness is 2-3 mm.
9. The metal electrodeposition cell with the anode plate acid mist collecting function of the cap-shaped cover as claimed in claim 1, wherein the cap-shaped cover is made of plastic or rubber with good insulating property.
10. The metal electrodeposition electrolytic cell with the acid mist collecting function of the anode plate with the cap-shaped cover as claimed in claim 1, wherein the distance between the two ends of the cap-shaped cover and the edge of the cell body is 1-3 mm.
CN202010104399.3A 2020-02-20 2020-02-20 Metal electrodeposition electrolytic tank with cap-shaped cover anode plate acid mist collecting function Active CN111455436B (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114892220A (en) * 2022-06-06 2022-08-12 浙江科菲科技股份有限公司 Nickel electrodeposition tank acid mist accumulation device and process method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114892220A (en) * 2022-06-06 2022-08-12 浙江科菲科技股份有限公司 Nickel electrodeposition tank acid mist accumulation device and process method thereof

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