CN217922419U - Precious metal electroplating residual liquid recovery device - Google Patents
Precious metal electroplating residual liquid recovery device Download PDFInfo
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- CN217922419U CN217922419U CN202221717714.0U CN202221717714U CN217922419U CN 217922419 U CN217922419 U CN 217922419U CN 202221717714 U CN202221717714 U CN 202221717714U CN 217922419 U CN217922419 U CN 217922419U
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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
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Abstract
The utility model discloses a precious metal is electroplated and is remained liquid recovery unit, including evaporation kettle and coiled pipe condensing equipment, the export of evaporation back concentrate is located to evaporation kettle bottom, and the top is equipped with the safety cover that can open the feeding, and the evaporation kettle lateral wall of safety cover below is equipped with steam outlet, and steam outlet passes through pipe connection coiled pipe condensing equipment, and the mouth is collected for the evaporated liquor in coiled pipe condensing equipment's export. The evaporation kettle is internally provided with a heat conduction metal plate which divides the evaporation kettle into an upper space and a lower space, the upper space is an evaporation space for containing the mixed liquid to be evaporated, and a concentrated liquid outlet is arranged at the low point of the evaporation space; the lower part is a heating space filled with heat-conducting silicone oil for heat transfer, and an electric heating device is arranged in the heating space. Utilize the utility model discloses the device can electroplate to remain the liquid to the noble metal and retrieve, can directly reuse after retrieving, the utility model discloses volatile component after the separation also can recycle, reaches the zero release, and is pollution-free to the environment, green.
Description
Technical Field
The utility model belongs to the technical field of electroplate, a electroplate residual liquid recovery unit is related to, concretely relates to precious metal electroplates residual liquid recovery unit.
Background
In the precious metal electroplating process, solution is always remained on the plating surface, and the residual solution contains effective components such as precious metals with certain concentration, the treatment method in the prior art is to wash the residual solution with purified water, and the washing solution is collected and then discharged after reaching the standard through relatively complex environmental protection treatment, so that the energy consumption and the cost of the environmental protection treatment are high, and the waste of the effective components such as the precious metals in the residual solution can be caused. Therefore, a recycling technology is needed to recycle the precious metals without causing environmental pollution.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a precious metal is electroplated and is remained liquid recovery unit for electroplate to precious metal and remain liquid and retrieve, both avoided the polluted environment, retrieved the precious metal again, realize waste utilization, reduce the cost of generation.
In order to solve the technical problem, the utility model discloses a technical means as follows:
the utility model provides a noble metal electroplates residual liquid recovery unit which characterized in that: including evaporation kettle and coiled pipe condensing equipment, the export of evaporation back concentrate is located to the evaporation kettle bottom, and the top is equipped with the safety lid that can open the feeding, and the evaporation kettle lateral wall of safety lid below is equipped with steam outlet, and steam outlet passes through pipe connection coiled pipe condensing equipment, and the export of coiled pipe condensing equipment is collected the mouth for the evaporated liquor.
Preferably, a heat-conducting metal plate for dividing the evaporation kettle into an upper space and a lower space is arranged in the evaporation kettle, the upper space is an evaporation space for containing the mixed liquid to be evaporated, and a concentrated liquid outlet is formed in the lower point of the evaporation space; the lower part is a heating space filled with heat-conducting silicone oil for heat transfer, and an electric heating device is arranged in the heating space.
Preferably, the electric heating device is an electric heating rod.
Preferably, the top of the evaporation kettle is provided with a safety cover capable of being opened and a safety valve for preventing overpressure.
Preferably, the precious metal electroplating residual liquid recovery device further comprises an expansion tank, and the bottom of the expansion tank is communicated with a top high point in the heating space through a pipeline.
Preferably, a first temperature sensor for monitoring the mixed liquid to be evaporated is arranged in the evaporation space of the evaporation kettle.
Preferably, there are two first temperature sensors, and the two first temperature sensors are arranged at different heights and are respectively used for monitoring the temperatures of the upper and lower different regions in the evaporation space.
Preferably, a second temperature sensor for monitoring the temperature of the heat-conducting silicone oil is arranged in the heating space of the evaporation kettle.
After the water-soluble volatile solvent is utilized to wash the plating surface, mixed solution containing the residual liquid of the noble metal is obtained, the mixed solution is placed in an evaporation kettle of the recovery device for recovering the residual liquid of the noble metal plating, the volatile solvent and a small amount of water are evaporated, and the mixed solution can be used as washing liquid again after being condensed; and the residue at the bottom of the evaporation kettle can be used as the precious metal electroplating solution again after being concentrated, therefore, the utility model discloses a zero release. When using through long-time circulation, when the accumulative water is too much in the flush fluid of recovery, toward wherein add volatile organic solvent can, perhaps put into the evaporation cauldron evaporation alone with the evaporation liquid, can get rid of unnecessary water, so the utility model discloses only need regularly carry out volatile organic solvent's evaporation of water, the unnecessary moisture of discharge can be accomplished and the use of growing cycle is made the utility model discloses innoxious completely realizes real innoxious electroplating process.
Compared with the prior art, the utility model discloses beneficial effect as follows:
1. the residual solution obtained by collection, treatment and separation can be directly reused, and the waste of precious metals (gold, silver and the like) in the residual liquid can not be caused.
2. The separated mixture consisting of the volatile solvent and a small amount of water and the concentrated residual liquid can be recycled, so that zero emission is achieved, environment-friendly treatment is not needed, energy is saved, consumption is reduced, and the environment is not polluted and is environment-friendly.
Drawings
Fig. 1 is a schematic structural view of a recovery device for precious metal electroplating residual liquid in the embodiment of the present invention.
FIG. 2 is a schematic view of the recycling process of the residual solution of noble metal electroplating in the embodiment of the present invention.
100-an evaporation kettle, 101-an evaporation space, 102-a heat conducting metal plate, 103-a heating space, 104-a safety cover, 105-a safety valve, 106-a steam outlet, 107-a concentrated solution outlet, 108-an expansion tank, 200-a coiled pipe condensing device, 201-a cooling water inlet, 202-a cooling water outlet, 300-a controller, 400-an evaporated solution collecting tank, 500-a concentrated solution collecting tank, 600-a first temperature sensor, 700-an electric heating rod and 800-a second temperature sensor.
Detailed Description
The following describes embodiments of the present invention in further detail with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.
As shown in fig. 1, the utility model provides a precious metal is electroplated and is remained liquid recovery unit, including the reation kettle 100, reation kettle 100 bottom is equipped with evaporation back concentrate export 107, can connect concentrate collecting vat 500, and the top is equipped with the safety cover 104 that can open, and the reation kettle 100 lateral wall of safety cover 104 below is equipped with steam outlet 106, is connected with coiled pipe condensing equipment 200 on steam outlet 106, and the export of coiled pipe condensing equipment 200 is the evaporated liquid and collects the mouth, can connect evaporated liquid collecting vat 400.
As a preferred embodiment, the evaporation kettle 100 is provided with a heating device, which may be an electric heater or a resistance wire heater, to directly heat the mixed liquid, so as to improve the heating efficiency.
As a preferred embodiment, in order to further control the temperature, the utility model discloses still set up first temperature sensor 600 or thermometer (the probe of thermometer sets up in evaporation kettle 100) in evaporation kettle 100, directly monitor the temperature of the mixed liquid in evaporation kettle 100, set up a threshold value to the temperature that first temperature sensor 600 monitored (this threshold value is slightly higher than volatile organic solvent boiling point, but is less than the boiling point of water, for example when using ethanol as volatile solvent, the ethanol boiling point is 78.3 ℃, then this threshold value can be set for 79 ℃ or 80 ℃, when first temperature sensor 600 monitored the temperature and is higher than this threshold value, show that ethanol in the mixed liquid is basically evaporated and is accomplished, can stop electric heater unit this moment.
It should be noted that the first temperature sensor 600 may also be a thermometer capable of reading on site, and the reading is manually read directly, and by comparing the reading with the setting, if the temperature is over, the evaporation is completed, and the heating device may be turned off.
In order to further improve automation, the utility model discloses still set up a controller 300, specifically can adopt MCU or PLC controller etc. controller 300 links to each other with first temperature sensor 600 and electrical heating dress passing signal line. When the temperature of the mixed liquid in the evaporation kettle 100 is monitored to exceed the threshold value through the first sensor, a stop signal is sent to the electric heating device, and the electric heating device is stopped.
As a preferred embodiment, in order to improve the temperature monitoring accuracy, there are two first temperature sensors 600, and the two first temperature sensors 600 are arranged at different heights and are respectively used for monitoring the temperatures of the upper and lower two different regions in the evaporation space, so that the temperature monitoring accuracy is improved.
As a preferred embodiment, as shown in fig. 1, the heating device of the present invention is a hot oil heating device, which can specifically divide the middle-lower part of the evaporation kettle 100 into an upper space and a lower space through a heat conducting metal plate 102, the upper space is an evaporation space 101, the mixed liquid is placed in the evaporation space 101 to be evaporated and separated from the volatile organic solvent, and the concentrated liquid outlet 107 is disposed at a low point above the heat conducting metal plate 102; the lower part is a heating space 103 which is filled with heat-conducting silicone oil and used for heat transfer, an electric heating device, specifically an electric heating rod 700 or a heating resistance wire, is arranged in the heating space 103 and used for heating the heat-conducting silicone oil, and the set temperature for heating the heat-conducting silicone oil is higher than the boiling point of the volatile organic solvent; during heating, the heat-conducting silicon oil is heated by the electric heating device firstly, the heat is transferred upwards by the heat-conducting silicon oil through the heat-conducting metal plate 102, and the mixed liquid for evaporation separation is heated, so that the mixed liquid can be uniformly heated, and the damage caused by dry burning of the electric heating device can be prevented.
As a preferred embodiment, in order to improve the temperature control accuracy of the heat conducting silicone oil, two second temperature sensors 800 are disposed in the heat conducting silicone oil in the heating space 103, the second temperature sensors 800 are also connected to the controller 300 through signal lines, the temperature of the heat conducting silicone oil is monitored through the second temperature sensors 800, the heat conducting silicone oil can be heated and set at a constant temperature, and the heat conducting silicone oil is prevented from being over-heated.
As a preferred embodiment, in order to improve the accuracy of temperature monitoring, there are two second temperature sensors 800, and the two second temperature sensors 800 are arranged at different heights and are respectively used for monitoring the temperatures of different areas at the upper part and the lower part of the heat-conducting silicone oil in the heating space, so that the accuracy of temperature monitoring is improved, and when monitoring temperature control, one of the second temperature sensors 800 may be used as a reference, and an average value of the two second temperature sensors 800 may also be used as a reference.
It should also be noted that the second temperature sensor 800 may also be a thermometer capable of reading on site, and the temperature of the heat conductive silicone oil may also be achieved by manually controlling the heating power of the heating device.
As an optimal embodiment, the utility model discloses can also set up expansion tank 108, top high point intercommunication in pipeline and heating space 103 is passed through to expansion tank 108 bottom, when heat conduction silicon oil is expanded by the heating volume like this, will overflow in the expansion tank 108, prevent that heating space 103 leads to the superpressure because of heating silicon oil inflation, a small amount of gas that produces in the heat conduction silicon oil heating process simultaneously also all enters into expansion tank 108 in, guaranteed the full jar of operation of heat conduction silicon oil in the heating space 103, prevent to produce the bubble between heat conduction metal sheet 102 and the heat conduction silicon oil and the heat transfer efficiency who leads to descends.
In a preferred embodiment, the top of the expansion tank 108 is directly communicated with the atmosphere through a pipeline or a constant pressure valve is arranged to maintain the set pressure.
As a preferred embodiment, as shown in FIG. 2, the serpentine condenser 200 comprises a serpentine and a jacket covering the serpentine, wherein the jacket has a cooling water inlet 201 at the bottom and a cooling water outlet 202 at the top.
It should be noted that, the controller 300 of the present invention is not necessary, but only in order to realize an automatic preferred mode, the controller type is a common control method, i.e. the overtemperature sends out a shutdown signal, which is not described again.
It should be noted that, the type selection of above-mentioned controller, first temperature sensor, second temperature sensor, electrical heating rod is according to actual monitoring temperature range class, for the common general knowledge of the ordinary skilled person in this field, the utility model discloses no longer describe repeatedly.
The evaporation kettle is not limited in material, preferably stainless steel, and has corrosion resistance, good strength and good heat transfer property; the heat conductive metal plate may be made of stainless steel.
It should be noted that a safety valve may be disposed on the top of the expansion tank to prevent overpressure during heating of the heat conductive silicone oil.
As shown in fig. 2, the method for recovering the precious metal electroplating residual liquid by using the precious metal electroplating residual liquid recovery device of the present invention comprises:
step 1, washing the plating surface by using a water-soluble volatile solvent to obtain a mixed solution of the volatile solvent and a precious metal residual liquid;
and 2, collecting the mixed solution, placing the mixed solution into the evaporation kettle 100 for evaporation, arranging a condensing device at a steam outlet 106 of the evaporation kettle 100 for condensation to obtain a volatile solvent containing a small amount of water, and evaporating and concentrating the mixed solution in the evaporation kettle 100 to obtain the reusable precious metal electroplating solution.
As a preferred embodiment, the water-soluble volatile solvent is any one or a combination of methanol, ethanol, isopropanol and acetone.
As a preferred embodiment, the noble metal plating solution is a water-soluble plating solution.
As a preferred embodiment, the noble metal electroplating solution is a gold, silver, platinum group metal water-soluble electroplating solution.
As a preferred embodiment, the condensing device of the vapor outlet 106 of the evaporation kettle 100 is a serpentine condensing device 200.
As a preferred embodiment, the evaporation vessel 100 is provided with an openable safety cover 104, and the safety cover 104 is provided with a safety valve 105 for preventing overpressure.
Specifically, in the embodiment of the present invention, the evaporation kettle 100 is a stainless steel evaporation kettle 100, and when in use, according to the specification and size of the stainless steel evaporation kettle 100, a proper amount of collected mixed liquid is poured into the stainless steel evaporation kettle, and a safety cover 104 is closed;
after checking that the evaporation kettle 100 and the heating device are correct, presetting the temperature of a temperature controller, wherein the preset temperature is generally higher than the boiling point of the volatile solvent and lower than the boiling point of water, electrifying to heat, and starting a cooling device of the coiled pipe condensing device 200;
after the temperature of the monitored mixed liquid reaches a preset temperature control index, the controller 300 controls the electric heating device to automatically trip to prevent the liquid in the evaporation kettle 100 from evaporating to dryness, and meanwhile, continuously collects the condensed evaporation liquid flowing out of the coiled pipe condensation device 200 in the process, wherein the condensed evaporation liquid mainly comprises a volatile solvent and a small amount of water, and can be recycled as the volatile solvent for repeated use, and the plating surface is washed again; it should be noted that the utility model discloses sneak into a small amount of water among the evaporation liquid and influence and use as the surface flushing fluid of plating application, use when recycling for a long time, when accumulative water is too much, toward wherein add volatile organic solvent can, perhaps put into evaporation kettle 100 evaporation alone with evaporation liquid, can get rid of unnecessary water.
Treat that stainless steel evaporation kettle 100 cools off to the room temperature after, collect the reuse through the discharge port with the residual liquid after the separation, because evaporation concentration for noble metal plating solution concentration risees, can regard as the noble metal plating solution to use once more, makes the utility model discloses complete zero release electroplates residual liquid and volatile organic solvent and all can used by recycle.
The above embodiments are merely illustrative, and not restrictive, of the present invention. Although the present invention has been described in detail with reference to the embodiments, those skilled in the art should understand that various combinations, modifications or equivalent substitutions may be made to the technical solution of the present invention without departing from the spirit and scope of the technical solution of the present invention, and all of them should be covered by the scope of the claims of the present invention.
Claims (8)
1. The utility model provides a noble metal electroplating residual liquid recovery unit which characterized in that: including evaporation kettle and coiled pipe condensing equipment, the export of evaporation back concentrate is located to the evaporation kettle bottom, and the top is equipped with the safety lid that can open the feeding, and the evaporation kettle lateral wall of safety lid below is equipped with steam outlet, and steam outlet passes through pipe connection coiled pipe condensing equipment, and the export of coiled pipe condensing equipment is collected the mouth for the evaporated liquor.
2. The precious metal plating residual solution recovery device according to claim 1, characterized in that: the evaporation kettle is internally provided with a heat-conducting metal plate which divides the evaporation kettle into an upper space and a lower space, the upper space is an evaporation space and is used for containing the mixed liquid to be evaporated, and a concentrated liquid outlet is arranged at the low point of the evaporation space; the lower part is a heating space which is filled with heat-conducting silicone oil for heat transfer, and an electric heating device is arranged in the heating space.
3. The precious metal plating residual solution recovery device according to claim 2, characterized in that: the electric heating device is an electric heating rod.
4. The precious metal plating residual solution recovery device according to claim 1, characterized in that: and a safety cover capable of being opened and a safety valve for preventing overpressure are arranged at the top of the evaporation kettle.
5. The precious metal plating residual solution recovery device according to claim 2, characterized in that: the heating system also comprises an expansion tank, wherein the bottom of the expansion tank is communicated with a top high point in the heating space through a pipeline.
6. The precious metal plating residual solution recovery device according to claim 2, characterized in that: a first temperature sensor used for monitoring the mixed liquid to be evaporated is arranged in the evaporation space of the evaporation kettle.
7. The precious metal plating residual solution recovery device according to claim 6, characterized in that: the first temperature sensors are arranged in a height mode and are used for monitoring the temperatures of different areas of an upper portion and a lower portion in the evaporation space respectively.
8. The precious metal plating residual solution recovery device according to claim 2, characterized in that: and a second temperature sensor for monitoring the temperature of the heat-conducting silicone oil is arranged in the heating space of the evaporation kettle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221717714.0U CN217922419U (en) | 2022-07-04 | 2022-07-04 | Precious metal electroplating residual liquid recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221717714.0U CN217922419U (en) | 2022-07-04 | 2022-07-04 | Precious metal electroplating residual liquid recovery device |
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| Publication Number | Publication Date |
|---|---|
| CN217922419U true CN217922419U (en) | 2022-11-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221717714.0U Active CN217922419U (en) | 2022-07-04 | 2022-07-04 | Precious metal electroplating residual liquid recovery device |
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| CN (1) | CN217922419U (en) |
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- 2022-07-04 CN CN202221717714.0U patent/CN217922419U/en active Active
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