CN101250726B - Closed electrolytic tank and electrolytic system - Google Patents
Closed electrolytic tank and electrolytic system Download PDFInfo
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- CN101250726B CN101250726B CN2007101782504A CN200710178250A CN101250726B CN 101250726 B CN101250726 B CN 101250726B CN 2007101782504 A CN2007101782504 A CN 2007101782504A CN 200710178250 A CN200710178250 A CN 200710178250A CN 101250726 B CN101250726 B CN 101250726B
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Abstract
The invention discloses a closed electrolytic tank and an electrolytic system, wherein the electrolytic tank comprises: the device comprises two end plates, an anode assembly, a cathode assembly, a sealing piece and a pressing device; all be equipped with the flowing liquid mouth on two end plates, correspond on anode assembly and the negative pole subassembly and be equipped with the flowing liquid through-hole, anode assembly and negative pole subassembly interval set up between the both ends board, form the polar chamber between anode assembly and the negative pole subassembly, anode assembly, negative pole subassembly and end plate contact department all set up the sealing member, form enclosed construction after anode assembly, negative pole subassembly and end plate compress tightly through closing device. The electrolytic cell has simple structure, can improve the circulating flow rate of the electrolyte, effectively reduce overpotential, improve the current density of the cathode and the anode during electrolysis, increase the productivity of a unit electrolytic cell, and can be widely applied to the electrodeposition of various metals and the electrodeposition of low-concentration metal solution. And the closed structure avoids the influence of gas discharged in the electrolysis process on the environment in the factory building.
Description
Technical field
The present invention relates to a kind of cell technologies, relate in particular to a kind of closed cell and electrolytic system of suitable metal electrodeposition.
Background technology
In existing production technology, general electrolyzer is an open cell, because the flow velocity of electrolytic solution is slow, liquid is difficult to guarantee even velocity of flow, the not even dead angle of flow phenomenon appears easily, not only make the distribution of current on the electrode inhomogeneous, cause electrolytic current density to descend, and because flow velocity is slower, the laminar layer broad of electrode surface makes the concentration step-down of electrolytic solution on pad-face, thereby cause concentration polarization, bath voltage raises, and has increased the side reaction chance of occurrence, thereby the current density when having limited electrolysis improves; In electrolytic engineering, electrolyzer is that the area of key, the especially electrode of investment causes the cost of electrolyzer to increase, so under the device situation that guarantees certain scale, improve the unit production capacity, reducing electrode area is the key that reduces investment; Existing in addition electrolyzer is an open type, and the gas that produces during electrolysis can be carried electrolytic solution secretly and evaporate in the factory building, causes the operating environment of cell room relatively poor.
Summary of the invention
The invention provides a kind of enclosed type electrolytic tank and electrolytic system.Its purpose is to address the above problem, and proposes a kind of closed structure, and is easy to loading and unloading, electrolytic efficiency is high, throughput is big, has the electrolyzer of the electrodeposition that is widely used in various metals that good electrode potential distributes.
The objective of the invention is to be achieved through the following technical solutions:
The invention provides a kind of enclosed type electrolytic tank, this electrolyzer comprises:
Two end plates, anode assemblies, cathode assembly, sealing member and hold-down gears; Be equipped with fluid port on two end plates, the fluid port of an end plate is arranged on this end plate upper end, the fluid port of another end plate is arranged on the lower end of this end plate, the corresponding flow liquid through hole that is provided with on anode assemblies and the cathode assembly, anode assemblies and cathode assembly are disposed between the two end plates, the polar plate spacing of described anode assemblies and cathode assembly is 20～100mm, form utmost point chamber between adjacent anode assemblies and the cathode assembly, anode assemblies, cathode assembly and end plate contact position all are provided with sealing member, anode assemblies, cathode assembly and end plate compress the back by hold-down gear and form closed structure;
Wherein, described anode assemblies comprises: busbar, positive plate and two insulation sheet frames, and positive plate adopts metal sheet or carbon plate, and the flow liquid through hole is arranged on the lower end of positive plate, and positive plate is arranged between the two insulation sheet frames, and positive plate one end is provided with busbar;
Described cathode assembly comprises: busbar and negative plate, and negative plate adopts metal sheet or carbon plate, and the flow liquid through hole is arranged on the upper end of negative plate, and negative plate one end is provided with busbar.
Described positive plate comprises: plate body is a rectangular configuration, and the plate body size dimension is below 1200mm.
Described negative plate comprises: plate body is a rectangular configuration, and the plate body size dimension is below 1200mm.
Described flow liquid through hole comprises: manhole or square through hole; Or a plurality of manholes and/or square through hole.
Described anode assemblies and cathode assembly are a plurality of.
Described sealing member comprises: adhesive tape that electrolyte resistance corrosive insulating material is made or plastic, rubber plate or rubber sheet gasket or rubber ring.
The polar plate spacing of described anode assemblies and cathode assembly is 20～100mm.
The invention provides a kind of electrolytic system of above-mentioned electrolyzer, this system comprises:
Adopt above-mentioned electrolyzer, the fluid port of an end plate of described electrolyzer is connected with circulation groove by under meter, recycle pump;
The fluid port of another end plate of described electrolyzer is directly connected to circulation groove;
Described circulation groove is provided with gas absorbing device.
The technical scheme that is provided by the invention described above embodiment as can be seen, the embodiment of the invention forms utmost point chamber by anode assemblies and cathode assembly are provided with at interval, two ends are provided with the flow liquid end plate, and encapsulation process is carried out in each parts contact position by sealing member, after compressing, hold-down gear forms the electrolyzer of closed structure, the electrolyzer of this enclosed system structure can increase electrolyte flow rate, and can make electrolytic solution be distributed on the pole plate uniformly, avoided the appearance at dead angle in the groove, and because the increase of electrolyte flow rate, the concentration polarization that has alleviated electrolytic process increases its limit current density, and then reduced the chance that side reaction takes place, and reduce bath voltage.So in being applied to production process, electrolysis under the same metal ionic concn is compared with the conventional electrolysis groove, has improved electrolytic current density greatly, thereby improve the unit production capacity.Under identical electrolytic condition, the electrolytic solution that can be fit to the metal ion of lower concentration carries out electrolysis, thereby makes the adaptive faculty of electrolyzer stronger.And can reduce the volatilization of electrolytic solution greatly, electrolytic solution is sealing and circulating in pipeline and electrolyzer, and having only circulation groove is open channel, and the electrolytic solution gaseous volatilization focuses on herein, can reach the purpose of clean room.This electrolyzer can be widely used in the electrodeposition of various metals, and it is simple in structure, compact, easily dress easily unloads, and electrolytic efficiency height, throughput are big, have the closing piece frame electrolyzer that good electrode potential distributes.
Description of drawings
Fig. 1 is the cross-sectional view of the electrolyzer of the embodiment of the invention;
Fig. 2 is the side direction structural representation of the anode assemblies of the embodiment of the invention;
Fig. 3 is the forward structure synoptic diagram of the anode assemblies of the embodiment of the invention;
Fig. 4 is the forward structure synoptic diagram of the cathode assembly of the embodiment of the invention;
Fig. 5 is the side direction structural representation of the cathode assembly of the embodiment of the invention;
Fig. 6 is the structural representation of the electrolytic system of the embodiment of the invention.
Embodiment
The embodiment of the invention provides a kind of enclosed type electrolytic tank and electrolytic system, by anode assemblies and cathode assembly are disposed between the two end plates, form utmost point chamber between adjacent anode assemblies and the cathode assembly, anode assemblies, cathode assembly and end plate contact position all are provided with sealing member, and anode assemblies, cathode assembly and end plate compress the electrolyzer that the back forms closed structure by hold-down gear.This cell construction is simple, compact, easily dress easily unloads, and electrolytic efficiency height, throughput are big, have the closing piece frame electrolyzer that good electrode potential distributes.Can be widely used in the electrodeposition of various metals.And electrolytic solution is sealing and circulating in pipeline and electrolyzer, can not pollute the air of factory building.
For ease of understanding, electrolyzer of the present invention is described below in conjunction with the drawings and specific embodiments.
Embodiment one
As shown in Figure 1, the embodiment of the invention provides a kind of electrolyzer of closed, specifically is used for various metals are carried out electrodeposition, specifically comprises:
Two end plates 1,5, anode assemblies 3, cathode assembly 2, sealing member 4 and hold-down gears 6; Be equipped with fluid port 7,8 on two end plates 1,5, the corresponding flow liquid through hole that is provided with on anode assemblies 3 and the cathode assembly 2, anode assemblies 3 and cathode assembly 2 are provided with between two end plates 1,5 at interval, form utmost point chamber between adjacent anode assemblies and the cathode assembly, difference according to actual needs, a plurality of anode assemblies and cathode assembly can be set, so just can form a plurality of utmost points chamber, the polar plate spacing that can make described anode assemblies and cathode assembly when specifically being provided with is in 20～100mm scope.Anode assemblies 3, cathode assembly 2 all are provided with sealing member 4 with end plate 1,5 contact positions and seal, adhesive tape or plastic, rubber plate, rubber sheet gasket etc. that sealing member can adopt electrolyte resistance corrosive insulating material to make, anode assemblies, cathode assembly and end plate compress the electrolyzer that the back forms closed structure by hold-down gear 7.Hold-down gear 6 can adopt conventional hold-down gear, and the electrolyzer that plays the closed structure of fixing each parts formation gets final product.
Shown in Fig. 2,3, wherein, anode assemblies in the above-mentioned electrolyzer specifically comprises: busbar A2, positive plate A3 and two insulation sheet frames, positive plate A3 adopts metal sheet or carbon plate, flow liquid through hole A5 is arranged on the positive plate A3, positive plate A3 is arranged between the two insulation sheet frames, and the contact position between sheet frame and the positive plate is provided with sealing-ring A4 (as: rubber ring), and positive plate A3 one end is provided with the busbar A2 that is used to connect positive source.
Shown in Fig. 4,5, wherein, the cathode assembly in the above-mentioned electrolyzer specifically comprises: busbar B3 and negative plate B2, and negative plate B2 adopts metal sheet or carbon plate, flow liquid through hole B1 is arranged on the negative plate B2, and negative plate B2 one end is provided with the busbar B3 that is used to connect power cathode.
In actual the use, the plate body of positive plate and negative plate can be designed as rectangular configuration, and the plate body size dimension being equal under the situation of scale, can reduce the pole plate area like this below 1200mm, thereby has reduced the investment cost of production equipment.
Flow liquid through hole on the positive plate of above-mentioned anode assemblies and the negative plate of cathode assembly can be a manhole or square through hole; Also a plurality of manholes and/or square through hole can be set.
For clearer, below by in conjunction with Fig. 1 above-mentioned electrolyzer being specifically described: electrolyzer constitutes after being compressed by pressing system by feed liquor end plate, fluid end plate, a plurality of cathode assembly, a plurality of anode assemblies, wherein, cathode assembly is eight, and anode assemblies is nine, the electrolytic reduction metal, anode is Duoed one than negative electrode, thereby guarantees the quality of electrolytic reduction metal, and cathode assembly and anode assemblies quantity can be according to the needs of production capacity, increase or reduce, be not construed as limiting the invention.The positive plate outside of anode assemblies is provided with two insulation sheet frames, anode assemblies and cathode assembly are when being disposed between the two end plates like this, make the negative plate and the positive plate of cathode assembly form utmost point chamber by sheet frame, utmost point chamber becomes the electrolyte passage between negative electrode and the anode, sheet frame and pole plate contact part can seal (as: adhesive tape or plastic, rubber plate or rubber sheet gasket or rubber ring etc.) with sealing member, in case leakage.Because feed liquor end plate 1 is provided with fluid inlet 7, fluid end plate 5 is provided with liquid outlet 8, for making electrolytic solution flow into next utmost point chamber by a utmost point chamber uniformly, up and down near the sheet frame place, the flow liquid passage is set at the yin, yang pole plate, the flow liquid passage can be circular port, square opening, rectangular opening, can be provided with one and also can be provided with a plurality ofly, negative plate is corresponding each other with positive plate, and negative plate is perforate up, positive plate then below perforate, vice versa.So just, form one and can make electrolytic solution mobile enclosed type electrolytic tank between fluid inlet, each utmost point chamber and liquid outlet.
Wherein, can be for positive plate, negative plate according to different electrolysis process conditional requests, select to have the sheet metal of certain intensity or carbon plate as cathode and anode; The sheet frame of liquid inlet and outlet end and positive plate can select for use have certain intensity, electrolyte resistance corrosive non-metal insulating material (as polypropylene).
Because above-mentioned electrolyzer is an enclosed system, can increase electrolyte flow rate, and the plate and frame structure, makes electrolytic solution to be distributed on the pole plate uniformly, thereby avoid the appearance at dead angle in the groove, reached the equally distributed purpose of electric current.Along with the increase of electrolyte flow rate, the concentration polarization that has alleviated electrolytic process increases its limit current density simultaneously, and then has reduced the chance that side reaction takes place, and reduces bath voltage.So in being applied to production process, electrolysis under the same metal ionic concn is compared with the conventional electrolysis groove, has improved electrolytic current density greatly, thereby improve the unit production capacity.Being equal under the situation of scale, can reduce the pole plate area, thereby reduce the investment cost of production equipment; Under identical electrolytic condition, the electrolytic solution that can be fit to the metal ion of lower concentration carries out electrolysis, thereby makes the adaptive faculty of electrolyzer stronger.Simultaneously because electrolyzer of the present invention is a closed cell, so can reduce the volatilization of electrolytic solution greatly, electrolytic solution is sealing and circulating in pipeline and electrolyzer, having only circulation groove is open channel, the electrolytic solution gaseous volatilization focuses on herein, can reach the purpose of clean room.
Embodiment two
As shown in Figure 6, the embodiment of the invention also provides a kind of electrolytic system based on the electrolyzer described in the embodiment one, and this system comprises:
Adopt the electrolyzer C1 described in the embodiment one, the fluid inlet of the feed liquor end plate of described electrolyzer C1 is connected with circulation groove C4 by pipeline, under meter C2, recycle pump C3, places the solution that electrolysis is used in the circulation groove C4;
The liquid outlet of the fluid end plate of described electrolyzer C1 is directly connected among the circulation groove C4 by pipeline;
Described circulation groove C4 is provided with gas absorbing device C5, and the gas that flow back into circulation groove C4 by the road that produces when gas absorbing device C5 works to electrolyzer C1 is handled.
For guaranteeing the flow velocity of electrolytic solution, electrolytic solution is pressed into from the feed liquor end plate by recycle pump, go out by the outlet end plate current, electrolytic solution flows through each the anode chamber and the cathode chamber cross-sectional flow and is controlled at 0.5～1m/s, thereby reinforcing mass transfer improves speed of reaction, guarantees that electrode potential is evenly distributed, so can increase the cathode and anode current density, improve the unit production capacity.
Below in conjunction with practical application the electrolytic system in the embodiment of the invention is described, but therefore do not limit range of application of the present invention.
Be applied to the copper electrodeposition with above-mentioned electrolytic system, Fig. 6 is the structural representation of electrolytic system, wherein, the sheet frame of the electrolyzer in this system, pipeline, liquid inlet and outlet end plate all adopt the polypropylene material preparation, and sealing-ring is the acid-resisting rubber circle, negative electrode is the 316L/2B stainless steel plate, thickness is at 2～3mm, and anode is the argentalium plate, and thickness is 5～6mm, pole span between the yin, yang pole plate is 35mm, and the busbar on the yin, yang pole plate is the fine copper plate.
Start recycle pump during operation solution is pumped into electrolyzer, when liquid returning tube begins back liquid, begin the electrolysis of switching on, and by under meter control electrolyte flow rate.Its appropriate processing condition is:
When 1. copper concentration was controlled at 30～50g/L left and right sides in the electrolytic solution, the circulation of elecrolyte flow velocity was 0.08～0.1m/s, and electrolyte temperature is 40～50 ℃, and current density can reach 500A/m
2, bath voltage is 2.2～2.4 volts.Current efficiency is more than 95%, and electrolysing period is 4 days, obtains the densification of electrolysis copper coin.
When 2. copper concentration was controlled at 10～15g/L left and right sides in the electrolytic solution, the circulation of elecrolyte flow velocity was 0.1～0.15m/s, and electrolyte temperature is 40～50 ℃, and current density can reach 150A/m
2, bath voltage is 2.2～2.4 volts.Current efficiency is more than 90%, and electrolysing period is 6 days, obtains the densification of electrolysis copper coin.
In sum, with anode assemblies and cathode assembly formation utmost point chamber is set at interval in the embodiment of the invention, is arranged between the two end plates, carry out encapsulation process, after hold-down gear compresses, form the electrolyzer of closed structure by sealing member.Wherein no dividing plate or membrane structure between each negative electrode and the anode.Electrolyzer of the present invention can be applicable to the electrodeposition of various metals widely, and the electrodeposition of low-concentration metallic solution.This cell construction is simple, compact, easily dress easily unloads, and electrolytic efficiency height, throughput are big, have the closed cell that good electrode potential distributes.
The above; only for the preferable embodiment of the present invention, but protection scope of the present invention is not limited thereto, and anyly is familiar with those skilled in the art in the technical scope that the present invention discloses; the variation that can expect easily or replacement all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain of claim.
Claims (7)
1. an enclosed type electrolytic tank is characterized in that, this electrolyzer comprises:
Two end plates (1,5), anode assemblies (3), cathode assembly (2), sealing member (4) and hold-down gear (6); Two end plates (1,5) be equipped with fluid port (7 on, 8), the fluid port (7) of an end plate (1) is arranged on this end plate (1) upper end, the fluid port (8) of another end plate (5) is arranged on the lower end of this end plate (5), anode assemblies (3) is gone up the corresponding flow liquid through hole that is provided with cathode assembly (2), anode assemblies (3) is disposed on two end plates (1 with cathode assembly (2), 5) between, the polar plate spacing of anode assemblies and cathode assembly is 20～100mm, form utmost point chamber between anode assemblies (3) and the cathode assembly (2), anode assemblies (3), cathode assembly (2) and end plate (1,5) contact position all is provided with sealing member (4), anode assemblies (3), cathode assembly (2) and end plate (1,5) compress the back by hold-down gear (6) and form closed structure;
Wherein, described anode assemblies comprises: busbar (A2), positive plate (A3) and two insulation sheet frames (A1), positive plate (A3) adopts metal sheet or carbon plate, flow liquid through hole (A5) is arranged on the lower end of positive plate (A3), positive plate (A3) is arranged between the two insulation sheet frames, and positive plate (A3) end is provided with busbar (A2);
Described cathode assembly comprises:
Busbar (B3) and negative plate (B2), negative plate (B2) adopts metal sheet or carbon plate, and flow liquid through hole (B1) is arranged on the upper end of negative plate (B2), and negative plate (B2) end is provided with busbar (B3).
2. electrolyzer according to claim 1 is characterized in that, described positive plate comprises: plate body is a rectangular configuration, and the plate body size dimension is below 1200mm.
3. electrolyzer according to claim 1 is characterized in that, described negative plate comprises: plate body is a rectangular configuration, and the plate body size dimension is below 1200mm.
4. electrolyzer according to claim 1 is characterized in that, described flow liquid through hole comprises:
Manhole or square through hole; Or a plurality of manholes and/or square through hole.
5. electrolyzer according to claim 1 is characterized in that described anode assemblies and cathode assembly are a plurality of.
6. electrolyzer according to claim 1 is characterized in that, described sealing member comprises: adhesive tape that electrolyte resistance corrosive insulating material is made or plastic, rubber plate or rubber sheet gasket or rubber ring.
7. the electrolytic system based on each described electrolyzer in the claim 1～6 is characterized in that, this system comprises:
Adopt each described electrolyzer in the claim 1～6, the fluid port of an end plate of described electrolyzer is connected with circulation groove by under meter, recycle pump;
The fluid port of another end plate of described electrolyzer is directly connected to circulation groove;
Described circulation groove is provided with gas absorbing device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101782504A CN101250726B (en) | 2007-11-28 | 2007-11-28 | Closed electrolytic tank and electrolytic system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101782504A CN101250726B (en) | 2007-11-28 | 2007-11-28 | Closed electrolytic tank and electrolytic system |
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| Publication Number | Publication Date |
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| CN101250726A CN101250726A (en) | 2008-08-27 |
| CN101250726B true CN101250726B (en) | 2010-08-18 |
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| CN109930172A (en) * | 2019-04-10 | 2019-06-25 | 中国恩菲工程技术有限公司 | Copper electrodeposition equipment |
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- 2007-11-28 CN CN2007101782504A patent/CN101250726B/en active Active
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108796538A (en) * | 2018-08-27 | 2018-11-13 | 山东赛克赛斯氢能源有限公司 | A kind of electrolytic bath pole sealing frame |
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