Acid mist absorption system on electrolytic bath and electrolytic bath system

Abstract

The utility model relates to the technical field of nickel electrolysis, in particular to an acid mist absorption system on an electrolytic bath and an electrolytic bath system. The acid mist absorption system is internally provided with the supports, the flexible acid mist cover, the track, the exhaust pipe, the induced draft fan, the follow-up reverse spraying pipe and the absorption tower, the multiple supports are fixedly connected with the flexible acid mist cover and can flexibly move on the track surrounding the electrolytic tank, and the exhaust pipe is arranged on the inner side of the track and provided with a plurality of small holes. During electrolysis or electrodeposition work, the support can be pulled open to cover the electrolytic tank below the flexible acid mist cover to form a closed space, the air suction pipe changes the interior of the space into micro negative pressure under the action of the fan, and generated acid mist enters a reverse spraying pipe for acid mist treatment and an absorption tower along with the air suction pipe. The device is simple in structure, flexible to move, convenient to open and close, low in cost, convenient to operate, good in sealing performance and adaptability and capable of being matched with various electrolytic cells, and the flexible acid mist cover is connected and supported by a plurality of supports so that the flexible acid mist cover cannot fall in the opening and closing process.

Description

TECHNICAL FIELD

[0001] The utility model relates to nickel electrolysis technical field, concretely relates to an acid mist absorption system on electrolytic cell and electrolytic cell system. BACKGROUND

[0002] In the hydrometallurgy production process, the anode will have oxygen and other gases precipitate, the gas released from the anode overflow from the solution near the anode, the bubble will bring a small amount of acid into the air under the action of surface tension, form acid mist, cause the working conditions of post workers to be relatively poor, and the generation of acid mist will corrode the equipment and facilities in the plant.

[0003] Therefore, the industry usually uses suction equipment to suck and absorb the acid mist generated by the anode, for example, a copper electrodeposition acid mist absorption device is disclosed in Chinese patent CN201482410U, the acid mist absorption device is a hard plastic or glass steel frame closed on four sides, and an acid-resistant cloth is covered on the opening of the frame to form a sealed space above the electrolytic cell, which will not cause acid mist leakage, when the electrode plate needs to be taken out, the acid-resistant cloth above needs to be removed manually, and the acid-resistant cloth may fall during this process and during the working process of the electrolytic cell, and it is more labor-intensive to remove the acid-resistant cloth, usually at least two people are needed to complete the removal; therefore, a environment-friendly and energy-saving type diaphragm electrolytic device is disclosed in Chinese patent CN203923395U, wherein the electrolytic device is provided with an acid mist trapping device, the acid mist trapping device includes an acid mist absorption tower, a water pump, a suction fan and a diaphragm frame group with an acid mist trapping channel, the acid mist trapping channel is used to trap the acid mist and suck it into the acid mist absorption tower for absorption treatment, the device does not affect the removal of the electrode plate when in use, but the sealing performance is not good, which may cause acid mist overflow, and a large number of diaphragm frame groups are needed to match the number of electrode plates, which is not suitable for electrolytic cells without diaphragm plates, has high cost and complex structure. UTILITY MODEL CONTENTS

[0004] In order to solve the problems in the prior art, the utility model develops an acid mist absorption system on electrolytic cell and electrolytic cell system which is suitable for different electrolytic cells, has good sealing performance, is easy to open and close, has low cost and the specific scheme is as follows:

[0005] The acid mist absorption system on the electrolytic cell comprises a bracket, a flexible acid mist cover, a track, an air extraction pipe and an air blower. The track comprises two tracks which are arranged in parallel. The opposite ends of the two tracks are provided with limiting devices. The upper part of each track is provided with a groove. A plurality of brackets are movably arranged in the groove of the track. All the brackets are fixedly connected to the flexible acid mist cover. The length of the downward part of the flexible acid mist cover in four directions is greater than the height of the bracket. The inner side of the track is further provided with an air extraction pipe. The air extraction pipe comprises a rectangular ring-shaped pipe and an air blower pipe. The rectangular ring-shaped pipe and the air blower pipe are connected vertically. The air blower pipe is connected to the air blower. A plurality of air holes are arranged on the rectangular ring-shaped pipe.

[0006] Further, the limiting device comprises a limiter, a pin shaft and a split pin. The limiter is fixed to the end of the track and is higher than the groove. The side of the track close to the limiter is provided with a first through hole which penetrates the groove of the track. The pin shaft penetrates the first through hole. The pin shaft is fixedly connected by a limiting block and a pin shaft rod. The size of the limiting block is greater than the size of the first through hole. The end of the pin shaft rod away from the limiting block and protruding out of the through hole is provided with a second through hole. The split pin penetrates the second through hole. There is at least one bracket between the limiter and the pin shaft.

[0007] Further, the flexible acid mist cover is made of PVC acid-resistant cloth.

[0008] Further, the air holes are arranged on the inner side or the upper part of the rectangular ring-shaped pipe.

[0009] Further, the system further comprises a reverse spray pump, a reverse spray head, a reverse spray pipe, a circulating pump and an absorption tower. The air blower pipe is communicated with the top of the reverse spray pipe. The reverse spray head is arranged in the middle of the reverse spray pipe. The bottom of the reverse spray pipe is communicated with the absorption tower. The absorption tower is provided with a defoaming wire mesh, an atomizing spray head and a filler from top to bottom. The filler is arranged above the connection position of the reverse spray pipe and the absorption tower. The bottom of the absorption tower stores circulating liquid. The bottom of the absorption tower is communicated with the atomizing spray head through the circulating pump. The bottom of the absorption tower is communicated with the reverse spray head through the reverse spray pump.

[0010] Further, an electrolytic cell system provided with the acid mist absorption system is provided. The electrolytic cell system comprises an electrolytic cell and the acid mist absorption system. The two side walls of the electrolytic cell are provided with pads. The pads are fixedly provided with cathodes or anodes. The two tracks of the acid mist absorption system are fixed to the outer sides of the pads. The rectangular ring-shaped pipe of the air extraction pipe is fixed to the pads and arranged on the inner side of the cathodes or anodes.

[0011] Further, the electrolytic cell system also contains a feed pipe, the feed pipe is provided with a feed inlet, the feed pipe is fixed on the cushion block and located inside the cathode or anode, the rectangular ring-shaped pipe in the air extraction pipe is fixed inside the feed pipe and on the cushion block, and the feed inlet of the feed pipe and the air holes of the rectangular ring-shaped pipe are staggered.

[0012] Further, the electrolytic cell system is composed of at least two electrolytic cell bodies arranged in rows, two rails in the acid mist absorption system are respectively fixed outside the cushion blocks of the two outermost side walls, the rectangular ring-shaped pipes in the air extraction pipes are fixed on the cushion blocks of the two outermost side walls and located inside the cathode or anode, and a plurality of air extraction branch pipes fixed on the inner side wall cushion blocks are arranged in the rectangular ring-shaped pipes, and a plurality of air holes are also arranged on the air extraction branch pipes.

[0013] The acid mist absorption system has the advantages that:

[0014] (1) The acid mist absorption system of the electrolytic cell is simple in structure, flexible in movement, convenient to open and close, low in cost, convenient to operate, good in sealing performance and adaptability, and can be adapted to various electrolytic cells.

[0015] (2) The movable support of the acid mist absorption system is provided with a plurality of supports, so that the support points of the flexible acid mist cover are dense, so that the flexible acid mist cover does not fall down when it is retracted out of the groove, and does not contact the electrolytic cell parts, electrolyte, electrode plate and the like.

[0016] (3) In addition, the acid mist generated on the electrolytic cell during the electrolysis process is directly extracted to the acid mist absorption tower by the induced draft fan, and two-step absorption is carried out, that is, once reverse flow absorption is carried out at the reverse jet pipe, and secondary reverse flow absorption is carried out at the absorption tower, so that the absorption effect is better, and the foam catching wire mesh arranged above the absorption tower can further remove the entrained water in the acid mist, and improve the acid mist absorption effect.

[0017] In summary, the acid mist absorption system is simple in structure, convenient to open and close, can be operated by one person, can be adapted to various electrolytic cells, the acid mist is not easy to leak, the absorption efficiency is high, and the working environment of workers on the electrolytic cell can be greatly improved. BRIEF DESCRIPTION OF DRAWINGS

[0018] The embodiments of the present application are further described below with reference to the drawings, in which:

[0019] Figure 1 A front view of an electrolytic cell installed with an acid mist absorption system is shown;

[0020] Figure 2 A top view of an electrolytic cell installed with an acid mist absorption system is shown;

[0021] Figure 3 A side view of the electrolytic cell installed with the acid mist absorption system is shown; Figure 2 An enlarged view of the structure of the circled part I track limiting device is shown;

[0022] Figure 4 A side view of the electrolytic cell installed with the acid mist absorption system is shown; Figure 2 A side view of the electrolytic cell installed with the acid mist absorption system is shown;

[0023] Figure 5 An enlarged view of the structure of the circled part II is shown; Figure 4 An enlarged view of the structure of the circled part II is shown;

[0024] Figure 6 A structure diagram of the suction pipe is shown;

[0025] Figure 7 A structure diagram of the acid mist absorption system independent of the electrolytic cell part is shown.

[0026] Wherein, 1-electrolytic cell, 2-bracket, 3-flexible acid mist cover, 4-track, 5-cathode, 6-feeding pipe, 7-suction pipe, 8-anode, 9-cathode plate, 10-anode plate, 11-electrolyte, 12-pad, 13-copper rod, 14-cathode plate, 15-draught fan, 16-back spray pump, 17-back spray head, 18-back spray pipe, 19-fume catching wire mesh, 20-atomizing spray head, 21-packing, 22-circulating pump, 23-limiter, 24-pivot, 25- cotter pin, 26-insulating block. DETAILED DESCRIPTION

[0027] In order to make the purpose, technical scheme and advantages of the present application more clear, the present application is further described in detail below with reference to the drawings through specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, and are not used to limit the present application.

[0028] As Figures 1-6As shown, an acid mist absorption system is installed on an electrolytic double cell, and pads 12 are provided on both side walls of the electrolytic cell 1, and a cathode 5 or an anode 8 is fixed on the pads 12. An insulating block 26 is also fixed on the cathode of the outermost wall, and an insulating block is also placed on the right half of the anode on the middle wall of the double cell. The electrolytic cell is filled with electrolyte 11, and the anode plates 10 and the cathode plates 9 are staggered and partially immersed in the electrolyte. The cathode plate 14 is placed in another cell, and a copper rod 13 is fixed on the top of the cathode plate 9 or the cathode plate 14. The cathode plate is placed on the insulating block and the cathode via the copper rod 13. The electrolytic cell 1 also contains a feed pipe 6, and a feed port is provided on the feed pipe 6. The feed pipe 6 is fixed on the pads 12 of all side walls and is located on the inner side of the cathode 5 or the anode 8. The two tracks 4 in the acid mist absorption system are respectively fixed to the outside of the pads 12 of the two outermost side walls. The two tracks 4 are arranged in parallel. A groove is provided on the top of each track 4. A limiting device is provided on the left side (opposite end) of the two tracks 4. The limiting device includes a limiter 23, a pin 24 and a cotter pin 25. The limiter 23 is fixed to the end of the track 4 and is higher than the groove. A first through hole is provided on the side of the track 4 close to the limiter 23. The first through hole passes through the groove of the track 4. The pin 24 passes through the first through hole. The size of the pin 24 is composed of a limit block and a pin rod fixedly connected. The size of the limit block is larger than the size of the first through hole. The pin rod passes through the first through hole. The limit block is fixed outside the first through hole. The end of the pin rod away from the limit block and protruding out of the through hole is provided with a second through hole. The cotter pin 25 passes through the second through hole. Two through holes, a bracket 2 is limited between the limiter 23 and the pin 24, and the rest of the multiple brackets 2 are movably placed in the groove of the track 4. All brackets 2 are fixedly connected to the flexible acid mist cover 3. The length of the drooping part in four directions of the flexible acid mist cover 3 is greater than the height of the bracket 2. An exhaust pipe 7 is also provided on the inside of the track 4. The exhaust pipe 7 includes a rectangular annular tube and an induced draft pipe. The rectangular annular tube and the induced draft pipe are vertically connected. The induced draft pipe is connected to the induced draft fan 15. A plurality of air holes are provided above the rectangular annular tube. The rectangular annular tube in the exhaust pipe 7 is fixed on the pads 12 of the two outermost side walls and is located on the inside of the cathode 5 or the anode 8. Two exhaust branches are also provided on the pad 12 of the intermediate wall. The two exhaust branches are connected to the rectangular annular tube, and the feed port of the feed pipe 6 and the air holes of the rectangular annular tube and the exhaust branch are all staggered.

[0029] like Figure 7 As shown, the induced draft fan 15 is connected to the top of the reverse spray pipe 18, the reverse nozzle 17 is located in the middle of the reverse spray pipe 18, and the bottom of the reverse spray pipe 18 is connected to the absorption tower. From top to bottom, a foam capture screen 19, an atomizing nozzle 20 and a filler 21 are arranged in the absorption tower. The filler 21 is located above the connection between the reverse spray pipe 18 and the absorption tower. Circulating liquid is stored at the bottom of the absorption tower. The bottom of the absorption tower is connected to the atomizing nozzle 20 via a circulating pump 22. The bottom of the absorption tower is also connected to the reverse nozzle 17 via the reverse spray pump 16.

[0030] In normal production, a plurality of supports 2 are pulled apart, the flexible acid mist cover is opened, the electrolytic tank 1 is covered to close the electrolytic tank 1, when the supports are moved to the leftmost side of the track, the limiting device of the track is used to prevent the supports from sliding to the right side of the track and to prevent the supports from derailing, and the supports make a branch movement in the groove on the track. Figure 3 As shown in the figure, one end of the anode plate 10 is in contact with the anode 8, one end of the copper rod 13 on the cathode plate 14 is in contact with the cathode, and one end of the copper rod 13 is in contact with the insulating block 26; the cathode plate 10 and the anode plate 14 are immersed in the electrolyte 11 to form a closed loop; the feeding pipe 6 installed on the electrolytic tank 1 feeds the diaphragm bag of the cathode plate; the air extraction pipe 7 is installed beside the feeding pipe 6; when acid mist is generated during electrolysis or electrodeposition, the flexible acid mist cover 3 is extracted by the induced draft fan 15 and the air extraction pipe 7 to provide a slight negative pressure, so that the acid mist in the space can be extracted, and the acid mist will not overflow in the environment; when the plate is taken out of the groove, the flexible acid mist cover 3 is moved with the support 2 to be opened, and the plate taking is started.

[0031] Reference Figure 7 Further description of the acid mist absorption system, the acid mist on the electrolytic tank 1 is uniformly extracted by the induced draft fan 15 through the air extraction pipe 7, the acid mist first enters the reverse jet pipe 18 of the absorption tower, the reverse jet pump 16 leads the circulating liquid in the absorption tower to the reverse jet head 17 in the reverse jet pipe 18 and sprays upward, the acid mist is subjected to the first dynamic wave absorption, then the acid mist enters the absorption tower, the circulating pump 22 uniformly sprays the circulating liquid in the tower on the filler 21 through the atomizing jet head 20, the acid mist diffuses upward and contacts the filler for the second absorption, and a layer of mesh wire 19 is installed above the filler 21 to further remove the entrained water in the acid mist.

[0032] Some exemplary embodiments of the utility model are described above, and it can be understood that the above embodiments are only used for explaining the utility model and do not constitute a limitation on the protection scope of the utility model. The features in these embodiments can be recombined in a suitable manner, and the schemes obtained thereby are still within the protection scope required by the utility model. Based on the above embodiments, all other embodiments obtained by the person skilled in the art without creative labor, i.e. all modifications, equivalent replacements and improvements made within the spirit and principles of the present application, are within the protection scope required by the utility model.

Claims

1. An acid mist absorption system on an electrolytic cell, characterized by, It includes: Support (2), flexible acid mist cover (3), track (4), exhaust pipe (7) and induced draft fan (15): the track (4) is two, two tracks (4) are arranged in parallel, the opposite ends of two tracks (4) are provided with limiting device, the recess is formed in each track (4), a plurality of supports (2) are movably placed in the recess of track (4), all supports (2) are fixedly connected to flexible acid mist cover (3), the length of the downward part of flexible acid mist cover (3) in four directions is greater than the height of support (2), the inner side of track (4) is further provided with exhaust pipe (7), the exhaust pipe (7) includes rectangular ring pipe and induced draft pipe, the rectangular ring pipe and induced draft pipe are vertically connected, the induced draft pipe is connected with induced draft fan (15), a plurality of air holes are formed in the rectangular ring pipe.

2. An acid mist absorption system on an electrolyzer according to claim 1, characterized in that, The limiting device includes a stopper (23), a pin shaft (24) and a split pin (25), the stopper (23) is fixed to the end of the track (4) and is higher than the recess, the side of the track (4) close to the stopper (23) is provided with a first through hole, the first through hole passes through the recess of the track (4), the pin shaft (24) passes through the first through hole, the pin shaft (24) is fixedly connected by a limiting block and a pin shaft rod, the size of the limiting block is greater than the size of the first through hole, the end of the pin shaft rod away from the limiting block and protruding out of the through hole is provided with a second through hole, the split pin (25) passes through the second through hole, there is at least one support (2) between the stopper (23) and the pin shaft (24).

3. An acid mist absorption system on an electrolyzer according to claim 1, characterized in that, The flexible acid mist cover (3) is PVC acid-resistant cloth.

4. An acid mist absorption system on an electrolyzer according to claim 1, characterized in that, The air holes are formed in the inner side or upper side of the rectangular ring pipe.

5. An acid mist absorption system on an electrolyzer according to claim 1, wherein It also contains a reverse spray pump (16), a reverse spray head (17), a reverse spray pipe (18), a circulating pump (22) and an absorption tower, the induced draft fan (15) is communicated with the top of the reverse spray pipe (18), the reverse spray head (17) is located in the middle of the reverse spray pipe (18), the bottom of the reverse spray pipe (18) is communicated with the absorption tower, the absorption tower is provided with a catch foam wire mesh (19), an atomizing spray head (20) and a filler (21) from top to bottom, the filler (21) is located above the connection between the reverse spray pipe (18) and the absorption tower, the bottom of the absorption tower stores circulating liquid, the bottom of the absorption tower is communicated with the atomizing spray head (20) through the circulating pump (22), the bottom of the absorption tower is communicated with the reverse spray head (17) through the reverse spray pump (16).

6. An electrolysis cell system comprising an electrolysis cell (1) and an acid mist absorption system according to any one of claims 1-5, characterized in that, The both sides of the electrolytic cell (1) are provided with a cushion block (12), the cathode (5) or anode (8) is fixed on the cushion block (12), the two tracks (4) in the acid mist absorption system are respectively fixed outside the cushion block (12), the rectangular ring pipe in the exhaust pipe (7) is fixed on the cushion block (12) and located inside the cathode (5) or anode (8).

7. An electrolytic cell system according to claim 6, characterised in that, The electrolytic cell (1) also contains a feeding pipe (6) with a feeding port, the feeding pipe (6) is fixed on the cushion block (12) and located inside the cathode (5) or anode (8), the rectangular ring pipe in the air extraction pipe (7) is fixed inside the feeding pipe (6) and on the cushion block, the feeding port of the feeding pipe (6) and the air holes of the rectangular ring pipe are staggered.

8. An electrolytic cell system according to claim 6, characterised in that, The electrolytic cell is composed of at least two electrolytic cell bodies in line, the two tracks (4) in the acid mist absorption system are respectively fixed outside the cushion blocks (12) of the two outermost side walls, the rectangular ring pipe in the air extraction pipe (7) is fixed on the cushion blocks (12) of the two outermost side walls and located inside the cathode (5) or anode (8), a plurality of air extraction branch pipes fixed on the inner side wall cushion blocks are also arranged in the rectangular ring pipe, and a plurality of air holes are also arranged on the air extraction branch pipes.

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