CN208201129U - Alkaline etching liquid indirect regeneration - Google Patents
Alkaline etching liquid indirect regeneration Download PDFInfo
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- CN208201129U CN208201129U CN201820344909.2U CN201820344909U CN208201129U CN 208201129 U CN208201129 U CN 208201129U CN 201820344909 U CN201820344909 U CN 201820344909U CN 208201129 U CN208201129 U CN 208201129U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
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Abstract
The utility model discloses a kind of alkaline etching liquid indirect regeneration, and the alkali etching for pcb board manufactures.The alkaline etching liquid indirect regeneration includes etching production line, etching liquor collecting device, electrolysis unit and regenerating unit.Wherein, etching production line is equipped with etching fluid outlet and regenerates sub- liquid flow inlet；It etches liquor collecting device and is equipped with the first import and first outlet；Electrolysis unit includes the cover board that groove body and lid set groove body notch, and electrode is equipped in groove body, and the lower end of groove body is equipped with the second import, and the upper end of groove body is equipped with second outlet, and electrolysis unit is equipped with collection port；Regenerating unit includes regenerated liquid collecting tank, sink and surge-tank, and regenerated liquid collecting tank and sink are respectively communicated with surge-tank；Wherein, etching fluid outlet is connected to the first import, and first outlet is connected to the second import, and second outlet is connected to regenerated liquid collecting tank, and collection port is connected to sink, and surge-tank connection regenerates sub- liquid flow inlet.Technical solutions of the utility model simplify operation, realize no effuent discharge.
Description
Technical field
The utility model relates to environmental technology field, in particular to a kind of alkaline etching liquid circulating picture-changing regenerative system.
Background technique
Printed circuit board (Printed Circuit Board), abbreviation pcb board, manufacturing process generally uses alkali etching
Process.Firstly, it is necessary to which non-corrosive alloy is electroplated in the component figure position of assist side, or apply the against corrosion of organic compound
Agent.Then it will not dissolved, be etched by the copper of the part of anticorrosion protection on wiring board using copper chloride solution.Etching
After, remove resist layer.In the process, copper chloride and elemental copper react under conditions of alkaline etching liquid generates Asia
Copper ion.With the progress of etching process, the copper chloride concentration in etching solution is constantly reduced, the reaction rate of copper chloride and copper by
Decrescence slow, etch-rate reduces.The concentration of cuprous ion constantly increases simultaneously, due to the unstability of cuprous ion, in alkalinity
Cuprous hydroxide precipitating is generated under environment.Cause the ion concentration in etching solution that etching is not achieved to require and need to re-replace new
Etching solution.However the etching waste liquor that replacement generates contains a large amount of copper ion, chloride ion, ammonium ion, belongs to hazardous chemical waste,
Direct emission not only results in waste of resources, but also can cause seriously to pollute to environment.
The method for handling above-mentioned etching waste liquor at present mainly uses Extraction electrodeposition technique, i.e., using copper extractant to copper into
Row extraction will extract the tough cathode that resulting copper passes through back extraction again and electrodeposition obtains high-purity, the surplus solution after extracting copper
Solution property is adjusted by the way that reagent is added, is recycled and reused for etching process.Such operation, on the one hand since copper extractant is extracting
Ammonium ion can be had in the process, can reduce the recycling number of copper extractant, after need to being washed with water to copper extractant again
It is stripped, this can generate a large amount of waste liquids in the process.On the other hand, operating process is cumbersome.
Utility model content
The main purpose of the utility model is to provide a kind of alkaline etching liquid indirect regeneration, it is intended to simplify operation, it is real
Existing no effuent discharge.
To achieve the above object, the utility model proposes alkaline etching liquid indirect regeneration, alkalinity for pcb board
Etching manufacture, comprising: etching production line is equipped with etching fluid outlet and regenerates sub- liquid flow inlet；Liquor collecting device is etched, is equipped with
First import and first outlet；Electrolysis unit sets the cover board of the groove body notch including groove body and lid, is equipped with electricity in the groove body
Pole, the lower end of the groove body are equipped with the second import, and the upper end of the groove body is equipped with second outlet, and the electrolysis unit is equipped with gas collection
Mouthful；Regenerating unit, including regenerated liquid collecting tank, sink and surge-tank, the regenerated liquid collecting tank and the sink are respectively communicated with
The surge-tank；Wherein, the etching fluid outlet and first inlet communication, the first outlet and second import
Connection, the second outlet are connected to the regenerated liquid collecting tank, and the collection port is connected to the sink, the regeneration liquid stream
Entrance is connected to the surge-tank.
Optionally, the groove body of the electrolysis unit includes first part and second part, the top of the first part and
The corresponding top and bottom for being connected to the second part in bottom, second import and the second outlet are set to described first
Point, the collection port is set to the second part, is equipped with the electrode in the second part.
Optionally, the regenerating unit further includes regenerating sub- liquid bath, and the sub- liquid bath of regeneration is connected to the surge-tank and institute
State regeneration liquid flow inlet.
Optionally, water pump is equipped between the first part and the second part, the input end of the water pump is connected to institute
The bottom of first part is stated, the outlet end of the water pump is connected to the bottom of the second part.
Optionally, between the etching liquor collecting device and the electrolysis unit be equipped with connection pump, it is described connection pump into
Mouth end is connected to the etching liquor collecting device, and the outlet end of the connection pump connects the electrolysis unit.
Optionally, the etching liquor collecting device further includes flowmeter, and the flowmeter is set to the first outlet.
Optionally, the first part is additionally provided with cooling device.
Optionally, the cooling device is titanium cooling tube.
Optionally, connecting tube is equipped between the collection port and the sink, one end of the connecting tube is connected to the collection
Port, the other end of the connecting tube are set into the aqueous solution of the sink.
Technical solutions of the utility model make to etch production line and etching solution are collected by using electrolysis unit and regenerating unit
Device, electrolysis unit and regenerating unit form complete etching solution recycling system.On the one hand, directly right using electrolysis unit
Etching solution containing copper ion is electrolysed, and metallic copper is obtained, while obtaining the regenerated liquid for removing a large amount of copper ions, and generate ammonia
Gas, this apparatus structure is simple, and only need to simplify operating process by electrolysis procedure.On the other hand, by regenerating unit to again
Raw liquid and ammonia are recycled respectively, and by the allotment to regenerated liquid and the weakly alkaline solution for absorbing ammonia, are obtained for losing
The sub- liquid of regeneration that is etched of liquid production line is carved, realizes that treated that by-product makes full use of to etching waste liquor, avoids useless
The generation and discharge of water, realize the zero-emission of waste water.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, the structure that can also be shown according to these attached drawings obtains other attached drawings.
Fig. 1 is the structural schematic diagram of one embodiment of the utility model alkaline etching liquid indirect regeneration.
Drawing reference numeral explanation:
| Label | Title | Label | Title |
| 1 | Alkaline etching liquid indirect regeneration | 10 | Etching solution production line |
| 20 | Etch liquor collecting device | 21 | Flowmeter |
| 22 | Connection pump | 30 | Electrolysis unit |
| 31 | First part | 32 | Second part |
| 40 | Regenerating unit | 41 | Regenerated liquid collecting tank |
| 42 | Sink | 43 | Surge-tank |
| 44 | Regenerate sub- liquid bath | 50 | Metallic copper |
The embodiments will be further described with reference to the accompanying drawings for the realization, functional characteristics and advantage of the utility model aim.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than all
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creative work premise
Under every other embodiment obtained, fall within the protection scope of the utility model.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute in the utility model embodiment
It is only used for explaining in relative positional relationship, the motion conditions etc. under a certain particular pose (as shown in the picture) between each component, such as
When the fruit particular pose changes, then directionality instruction also correspondingly changes correspondingly.
In addition, the description for being related to " first ", " second " etc. in the present invention is used for description purposes only, and cannot understand
For its relative importance of indication or suggestion or implicitly indicate the quantity of indicated technical characteristic.Define as a result, " first ",
The feature of " second " can explicitly or implicitly include at least one of the features.In addition, the technical side between each embodiment
Case can be combined with each other, but must be based on can be realized by those of ordinary skill in the art, when the combination of technical solution
Conflicting or cannot achieve when occur will be understood that the combination of this technical solution is not present, also not in the requires of the utility model
Protection scope within.
The utility model proposes a kind of alkaline etching liquid indirect regeneration, the alkali etching for pcb board is manufactured.
Referring to Fig.1, in the utility model embodiment, which includes etching production line
10, liquor collecting device 20, electrolysis unit 30 and regenerating unit 40 are etched.Wherein, etching production line 10 is equipped with etching fluid outlet
With the sub- liquid flow inlet of regeneration；It etches liquor collecting device 20 and is equipped with the first import and first outlet；Electrolysis unit 30, including groove body
(not shown) and lid set the cover board (not shown) of groove body notch, are equipped with electrode (not shown) in groove body, and the lower end of groove body is equipped with the
Two imports, the upper end of groove body are equipped with second outlet, and electrolysis unit 30 is equipped with collection port；Regenerating unit 40, including regenerated liquid are collected
Slot 41, sink 42 and surge-tank 43, regenerated liquid collecting tank 41 and sink 42 are respectively communicated with surge-tank 43；Wherein, etching solution flows out
Mouthful with the first inlet communication, first outlet and the second inlet communication, second outlet be connected to regenerated liquid collecting tank 41, collect port and
Sink 42 is connected to, and regeneration liquid flow inlet is connected to surge-tank 43.
Specifically, etching production line 10 is equipped with etching fluid outlet and regenerates sub- liquid flow inlet, makes to generate in etching process
Etching solution by etching fluid outlet outflow, flow into the sub- liquid of the regeneration obtained after circular regeneration by regenerating sub- liquid flow inlet
Production line 10 is etched, production is etched.
It etches liquor collecting device 20 and is equipped with the first import and first outlet, so that the first inlet communication is etched fluid outlet, make
The etching solution that generates in production line 10 must be etched, etching solution collection device 20 is flowed by the first import, so as to etching waste liquor into
Row is collected and storage.Etching solution is transferred out by first outlet again, to carry out the processing of next step to etching solution.The etching solution
One or more collecting tanks or collecting vessel can be used in collection device 20 as needed.
The mode that the utility model directlys adopt electrolysis handles etching solution, is equipped with electrolysis unit 30.Electrolysis unit
30, which include groove body, prevents in electrolytic process with the cover board being covered at groove body notch so that electrolysis unit 30 forms airtight cavity
The gas of generation escapes, and is conducive to that the chemical gas of generation is collected and is handled, is made full use of.The lower end of groove body is set
There is the second import, the upper end of groove body is equipped with second outlet, makes the second inlet communication first outlet, makes to etch the receipts of liquor collecting device 20
The etching solution of collection flows into electrolysis unit 30 by the second import.Copper ion concentration with higher in etching solution, under groove body
End flow into so that in 30 cavity of electrolysis unit solution lower half portion copper ion concentration with higher.Electrode is molten to the part
Liquid is electrolysed, and by electrolysis, elemental copper is precipitated, while the copper ion concentration in solution largely reduces.Due in electrolytic process
Air-flow can be generated, and the gravity after electrolysis is low compared with gravity before being electrolysed, so that the solution into groove body of the solution after electrolysis
Upper flow, in groove body solution top formed the regenerated liquid containing minute quantity copper ion.And etching solution is weakly alkaline solution,
Containing ammonium ion, ammonia can be generated in electrolytic process, ammonia has penetrating odor, so that electrolysis unit 30 is equipped with collection port, leads to
It crosses collection port to be collected ammonia, avoids polluting the environment.
In order to be recycled to the regenerated liquid and ammonia that generate after electrolysis, regenerating unit 40 is set.Regenerating unit 40
Including regenerated liquid collecting tank 41, sink 42 and surge-tank 43, regenerated liquid collecting tank 41 is made to be connected to second outlet, so that after electrolysis
Regenerated liquid flows into regenerated liquid collecting tank 41 by second outlet；Make 42 connected set port of sink, so that the ammonia that electrolysis generates
Enter sink 42 by collecting port, and because ammonia has preferable solubility in water, ammonia is absorbed by sink 42, is obtained
To in weakly alkaline ammonium hydroxide.And regenerated liquid collecting tank 41 and sink 42 is made to be respectively communicated with surge-tank 43, make the connection of surge-tank 43 again
Raw sub- liquid flow inlet, utilizes regenerated liquid and weakly alkaline ammonium hydroxide redistribution for etching in production line 10 in surge-tank 43
Sub- liquid is regenerated, sub- liquid is regenerated by regenerating sub- liquid flow inlet and flows into etching production line 10, realization generates regenerated liquid and electrolysis
The complete utilization of ammonia, it is entirely avoided the discharge of waste water and gas.
Technical solutions of the utility model make to etch production line 10 and etching by using electrolysis unit 30 and regenerating unit 40
Liquor collecting device 20, electrolysis unit 30 and regenerating unit 40 form complete etching solution recycling system 1.On the one hand, it utilizes
Electrolysis unit 30 is directly electrolysed the etching solution containing copper ion, obtains metallic copper 50, at the same obtain remove a large amount of copper from
The regenerated liquid of son, and ammonia is generated, this apparatus structure is simple, and only need to simplify operating process by electrolysis procedure.Another party
Regenerated liquid and ammonia are recycled by regenerating unit 40 in face respectively, and pass through the alkalescent to regenerated liquid and absorption ammonia
The allotment of solution obtains the sub- liquid of regeneration being etched for etching solution production line, realizes to etching waste liquor treated by-product
Object makes full use of, and avoids the generation and discharge of waste water, realizes the zero-emission of waste water.
As shown in Figure 1, the groove body of electrolysis unit 30 includes first part 31 and second part 32, the top of first part 31
With the corresponding top and bottom for being connected to second part 32 in bottom, the second import and second outlet are set to first part 31, collect port
Electrode is equipped in second part 32, second part 32.Etching solution is flowed into from etching liquor collecting device 20 by the second import
First part 31, and it is flow to from the bottom of first part 31 bottom of second part 32, pass through electrode in second part 32 and sends out
Raw electrolysis.Since etching solution is entered by the bottom of second part 32, in electrolytic process, contain the higher etching of copper ion concentration
Liquid is in the lower part of the electrode in electrolytic solution.Regenerated liquid after electrolysis rises to electrolysis by the air-flow being electrolysed and the specific gravity of itself
Top in solution.Because etching solution endlessly flows into, with the progress of electrolysis, regenerated liquid can be from the top of second part 32
Overflow returns to first part 31.At this point, the flowing of regenerated liquid is divided into two parts.A part of regenerated liquid flows downward, with place
Etching solution in first part 31 is mixed, so as to adjust the copper ion concentration in etching solution.Another part passes through the
Two outlets flow out to regenerated liquid collecting tank 41, recycle to regenerated liquid.By make collect port be set to second part 32, convenient for pair
The gas generated after electrolysis is directly recycled.
By first part 31 and second part 32, etching solution is made to flow into second part 32 from the bottom of first part 31,
And as electrolysis flows up in second part 32, regenerated liquid is back to first from the top overflow of second part 32 after electrolysis
Part 31, and flow downward in first part 31 and mix and flow outward.The shape between first part 31 and second part 32
At the runner of circulation loop.Also, before electrolysis starts, adjusting to set in advance protects the copper ion concentration of solution in second part 32
Hold in 10~55g/L, after electrolysis starts, by making the inflow of etching solution in first part 31, control copper ion concentration 20~
40g/L.This is because if metallic copper 50 is precipitated by electrolysis higher than 55g/L in the excessive concentration of copper ion in electrolytic solution
More demanding current density, thus it requires high voltage, high voltage is not only easy to exceed voltage rating, needs transformation, and
And it is easy to produce security risk.If copper ion solubility is lower than 20g/L in electrolysis, it is precipitated or is precipitated so that copper ion is not easy electrolysis
Relatively slow, electrolytic efficiency is lower.
As shown in Figure 1, regenerating unit 40 further includes regenerating sub- liquid bath 44, regenerates sub- liquid bath 44 and be connected to surge-tank 43 and regeneration
Liquid flow inlet.It is further deployed and is stored by the solution after sub- 44 pairs of the liquid bath allotments of regeneration, meet etching to obtain
The sub- liquid of regeneration of 10 requirement of production line.
As shown in Figure 1, being equipped with water pump between first part 31 and second part 32, the input end of water pump is connected to first part
31 bottom, the bottom of the outlet end connection second part 32 of water pump.It is connected to by water pump, in use, according to electricity
The degree carried out is solved, water pump unlatching and flow is controlled to control what is be electrolysed in second part 32 and facilitates operation.
As shown in Figure 1, connection pump 22 is equipped between etching liquor collecting device 20 and electrolysis unit 30, the import of connection pump 22
End connection etching liquor collecting device 20, the outlet end of connection pump 22 is connected to electrolysis unit 30.It is convenient for etch by connection pump 22
Liquid is delivered to electrolysis unit 30 from etching liquor collecting device 20, easy to operate.
It flow to the flow of electrolysis unit 30 in order to control etching solution from etching liquor collecting device 20, etches liquor collecting device 20
It further include flowmeter 21, flowmeter 21 is set to first outlet.The flow of etching solution is controlled, by flowmeter 21 with control electrolysis dress
The copper ion concentration in 30 is set, electrolytic efficiency is improved.
As shown in Figure 1, first part 31 is additionally provided with cooling device (not shown).To regenerated liquid and etching in first part 31
The mixed solution of liquid is cooled down.Solution temperature in control first part 31 is maintained at 30~35 DEG C, on the one hand, passes through cooling
So that the mixed solution with low temperature is entered second part 32, to reduce the solution temperature in second part 32, avoids producing because of electrolysis
Raw heat makes to be easy have excessively high temperature.On the other hand, by the cooling volatilization for reducing aqueous solution, guarantee in mixed solution
Copper ion concentration.
In the present embodiment, cooling device is titanium cooling tube.Titanium cooling tube can be assemblied in the bottom of first part 31, can also
It is assemblied in the side wall of first part 31.It of courses, other cooling devices can also be used, such as frozen water machine or cooling column, make ice water
The water-setting pipe of machine or cooling column is set to first part 31.
Further, collect and be equipped with connecting tube (not shown) between port and sink 42, one end connected set port of connecting tube,
The other end of connecting tube is set into the aqueous solution of sink 42.The ammonia that electrolysis releases is directly introduced into sink by connecting tube
In 42 aqueous solution, it is directly dissolved in ammonia in aqueous solution, so that aqueous solution is absorbed and utilized to greatest extent to ammonia.
The above is only the preferred embodiment of the present invention, and therefore it does not limit the scope of the patent of the utility model,
It is all under the inventive concept of the utility model, equivalent structure made based on the specification and figures of the utility model becomes
It changes, or directly/be used in other related technical areas indirectly and be included in the scope of patent protection of the utility model.
Claims (9)
1. a kind of alkaline etching liquid indirect regeneration, the alkali etching for pcb board is manufactured characterized by comprising
Production line is etched, etching fluid outlet is equipped with and regenerates sub- liquid flow inlet；
Liquor collecting device is etched, the first import and first outlet are equipped with；
Electrolysis unit sets the cover board of the groove body notch including groove body and lid, is equipped with electrode in the groove body, under the groove body
End is equipped with the second import, and the upper end of the groove body is equipped with second outlet, and the electrolysis unit is equipped with collection port；
Regenerating unit, including regenerated liquid collecting tank, sink and surge-tank, the regenerated liquid collecting tank and the sink are respectively communicated with
The surge-tank；
Wherein, the etching fluid outlet and first inlet communication, the first outlet and second inlet communication, institute
Second outlet is stated to be connected to the regenerated liquid collecting tank, the collection port is connected to the sink, the regeneration liquid flow inlet with
The surge-tank connection.
2. alkaline etching liquid indirect regeneration as described in claim 1, which is characterized in that the groove body packet of the electrolysis unit
Include first part and second part, the corresponding top and bottom for being connected to the second part in the top and bottom of the first part
Portion, second import and the second outlet are set to the first part, and the collection port is set to the second part, described
The electrode is equipped in second part.
3. alkaline etching liquid indirect regeneration as claimed in claim 2, which is characterized in that the regenerating unit further includes again
Raw sub- liquid bath, the sub- liquid bath of regeneration are connected to the surge-tank and the regeneration liquid flow inlet.
4. alkaline etching liquid indirect regeneration as claimed in claim 3, which is characterized in that the first part and described
Water pump is equipped between two parts, the input end of the water pump is connected to the bottom of the first part, and the outlet end of the water pump connects
Lead to the bottom of the second part.
5. alkaline etching liquid indirect regeneration as claimed in claim 4, which is characterized in that the etching liquor collecting device and
Connection pump is equipped between the electrolysis unit, the input end of the connection pump is connected to the etching liquor collecting device, the connection
The outlet end of pump is connected to the electrolysis unit.
6. alkaline etching liquid indirect regeneration as claimed in claim 5, which is characterized in that the etching liquor collecting device is also
Including flowmeter, the flowmeter is set to the first outlet.
7. alkaline etching liquid indirect regeneration as claimed in claim 2, which is characterized in that the first part is additionally provided with cold
But device.
8. alkaline etching liquid indirect regeneration as claimed in claim 7, which is characterized in that the cooling device is cooling for titanium
Pipe.
9. alkaline etching liquid indirect regeneration as claimed in claim 2, which is characterized in that the collection port and the sink
Between be equipped with connecting tube, one end of the connecting tube is connected to the collection port, and the other end of the connecting tube is set to the sink
Aqueous solution in.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820344909.2U CN208201129U (en) | 2018-03-13 | 2018-03-13 | Alkaline etching liquid indirect regeneration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820344909.2U CN208201129U (en) | 2018-03-13 | 2018-03-13 | Alkaline etching liquid indirect regeneration |
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| Publication Number | Publication Date |
|---|---|
| CN208201129U true CN208201129U (en) | 2018-12-07 |
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ID=64526890
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| CN201820344909.2U Active CN208201129U (en) | 2018-03-13 | 2018-03-13 | Alkaline etching liquid indirect regeneration |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109881214A (en) * | 2019-04-12 | 2019-06-14 | 深圳市泓达环境科技有限公司 | A kind of alkalinity Direct Electrolysis slot and the electrolysis producing line using it |
| CN109881200A (en) * | 2019-04-10 | 2019-06-14 | 深圳市铿东科技有限公司 | A kind of regenerating alkaline etching liquid and its copper recovery method |
-
2018
- 2018-03-13 CN CN201820344909.2U patent/CN208201129U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109881200A (en) * | 2019-04-10 | 2019-06-14 | 深圳市铿东科技有限公司 | A kind of regenerating alkaline etching liquid and its copper recovery method |
| CN109881200B (en) * | 2019-04-10 | 2021-05-11 | 深圳市铿东科技有限公司 | Regeneration of alkaline etching solution and copper recovery method thereof |
| CN109881214A (en) * | 2019-04-12 | 2019-06-14 | 深圳市泓达环境科技有限公司 | A kind of alkalinity Direct Electrolysis slot and the electrolysis producing line using it |
| CN109881214B (en) * | 2019-04-12 | 2024-04-30 | 株洲稷维环保有限公司 | Alkaline direct electrolytic tank and electrolytic production line using same |
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Effective date of registration: 20210113 Address after: 518000 201, building 10, Fuhua Industrial Zone, Nanbo Avenue, Tangwei community, Fuhai street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Qixin Environmental Protection Technology Co.,Ltd. Address before: 518125 A / F, building B1, zone 1, Fuhai street, Baoan District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN QIXIN TIANZHENG ENVIRONMENTAL PROTECTION TECHNOLOGY Co.,Ltd. |