CN221014602U - Nickel sulfate solution oil removal system for electrodeposited nickel - Google Patents
Nickel sulfate solution oil removal system for electrodeposited nickel Download PDFInfo
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- CN221014602U CN221014602U CN202322575396.XU CN202322575396U CN221014602U CN 221014602 U CN221014602 U CN 221014602U CN 202322575396 U CN202322575396 U CN 202322575396U CN 221014602 U CN221014602 U CN 221014602U
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- oil
- nickel
- inlet
- tank
- sulfate solution
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 68
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 34
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 title claims abstract description 28
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 title claims abstract description 28
- 239000007788 liquid Substances 0.000 claims abstract description 48
- 239000011347 resin Substances 0.000 claims abstract description 40
- 229920005989 resin Polymers 0.000 claims abstract description 40
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 238000001179 sorption measurement Methods 0.000 claims abstract description 24
- 238000000926 separation method Methods 0.000 claims description 43
- 239000004744 fabric Substances 0.000 claims description 14
- 238000007790 scraping Methods 0.000 claims description 6
- 238000010907 mechanical stirring Methods 0.000 claims description 4
- 238000011049 filling Methods 0.000 claims description 3
- 239000004094 surface-active agent Substances 0.000 abstract description 8
- 238000005868 electrolysis reaction Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000004581 coalescence Methods 0.000 abstract 3
- 238000000034 method Methods 0.000 description 16
- 230000008569 process Effects 0.000 description 13
- 230000000694 effects Effects 0.000 description 6
- 238000000605 extraction Methods 0.000 description 6
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 5
- 238000002156 mixing Methods 0.000 description 5
- 238000007667 floating Methods 0.000 description 4
- 238000004070 electrodeposition Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003085 diluting agent Substances 0.000 description 2
- 238000005363 electrowinning Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000005188 flotation Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000004383 yellowing Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000002920 hazardous waste Substances 0.000 description 1
- 238000009854 hydrometallurgy Methods 0.000 description 1
- 239000003350 kerosene Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000007127 saponification reaction Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
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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
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Electrolytic Production Of Metals (AREA)
Abstract
The utility model provides a nickel sulfate solution deoiling system for electrodeposited nickel, belong to electrodeposited nickel production auxiliary assembly technical field, including the homogeneity pond, the coalescence resin post, the oil removal groove, the degree of depth adsorption post, sack filter and electrolysis trough, the homogeneity pond liquid outlet passes through the pump connection with coalescence resin post bottom inlet, coalescence resin post top liquid outlet and oil removal groove water piping connection, oil removal groove upper portion is equipped with scrapes oily board and oil-out, oil removal groove lower part delivery port passes through the pump connection with degree of depth adsorption post inlet, degree of depth adsorption post liquid outlet and sack filter inlet are connected, sack filter liquid outlet and electrolysis trough inlet are connected, the electrolysis trough is equipped with the anolyte overflow mouth, anolyte overflow mouth is connected with the inlet of homogeneity pond. The utility model can deeply remove the undissolved oil and the dissolved oil in the nickel sulfate solution for electrodepositing nickel, remove the residual surfactant in the system and ensure the quality of the nickel product obtained by electrodepositing the nickel sulfate solution.
Description
Technical Field
The utility model belongs to the technical field of auxiliary equipment for producing electrodeposited nickel, and relates to a system for removing oil from a nickel sulfate solution for electrodeposited nickel.
Background
The nickel sulfate feed liquid used for electrodepositing nickel is mostly from nonferrous hydrometallurgy industry. The nickel sulfate is mostly extracted by adopting an extraction process, using P204/P507/C272 as an extractant and sulfonated kerosene as a diluent, but in the extraction process, due to the influences of mechanical stirring, saponification degree, extraction pH and the like, a part of the extractant and the diluent are entrained into a nickel sulfate solution in different degrees, so that the oil content of the nickel sulfate solution is higher, and the existence of the oil can cause the problems of air holes, yellowing and blackening of appearance, low tension forming rate, poor quality of nickel plates and the like of nickel plates produced by electrodeposited nickel.
The electrodeposited nickel has higher requirements on the content of the water inlet oil, and the quality of the electrodeposited nickel can be obviously improved only when the oil content is less than 1 mg/L. The conventional oil removal technology in the field is usually a gravity oil removal tank, air flotation oil removal and fiber ball oil removal series combination process for removing oil, oil can be reduced to below 5 mg/L generally, but because the solution is strong in acidity (pH is usually less than 2.5), equipment for removing oil in the oil removal tank and air flotation oil is easy to corrode, the operation cost is increased, and CN102242263A/B provides a combination process for clarifying oil removal by a storage tank, removing oil by a jet pump and removing oil by fiber adsorption to reduce the operation cost, but only insoluble oil in water can be removed by the method. CN114875449a proposes a raffinate oil removal process of an electrodeposited nickel production line, which combines outdoor clarification Chi Jingzhi oil removal, dissolved air floatation and persulfate advanced oxidation oil removal processes to achieve the purpose of deep oil removal, but the method has the advantages of long advanced oxidation period, long required residence time and large occupied area.
In addition, in the nickel electrodeposition process, some enterprises are in order to increase the lubricity of the solution in the nickel electrodeposition process, prevent excessive volatilization of acid gas into the air, and in order to prevent workers from falling into the electrolytic bath when operating above the electrolytic bath, so that the nickel plate bulges in the electrodeposition process, a small amount of surfactant components such as sodium dodecyl sulfate and the like can be added into the feed liquid before entering the electrolytic bath, in the electrolysis process, excessive overflow of gas can be prevented due to the change of the surface tension of the solution, the lubricity of the solution is increased, and foam is generated in the solution, so that particles falling above can be prevented from entering the solution, and the nickel plate bulges are avoided.
However, the anode liquid generated by the electrolytic tank can circulate to the front end of the system for liquid preparation, the solution after liquid preparation is taken as cathode liquid to enter the electrolytic tank, so that the sodium dodecyl sulfate is always enriched in the system, and along with the electrolytic process, organic matters can also undergo a certain degree of oxidation-reduction reaction, so that the properties of the organic matters are changed, therefore, surfactant substances such as sodium dodecyl sulfate and the like in the system are required to be removed while the oil is removed, the content of the organic matters in the system is reduced, and the running stability of the system is ensured. In addition, the temperature of nickel sulfate strip liquor which is taken down from an extraction line is about 40-50 ℃, the electrolysis water inlet temperature is 60-70 ℃, the electrolysis process is exothermic, the temperature of anode liquor which is taken out from an electrolytic tank is higher, the solubility of oil substances can be increased under the high temperature condition, and the oil removal difficulty is improved.
It is necessary to develop an oil removal system to remove insoluble oil and dissolved oil in the nickel sulfate solution for electrodeposited nickel and to remove residual surfactant in the system, so as to avoid problems of yellowing, blackening, air holes and the like of the nickel product obtained by electrodepositing the nickel sulfate solution.
Disclosure of Invention
The utility model aims to provide a system for removing oil from a nickel sulfate solution for electrodeposited nickel, which is used for deeply removing undissolved oil and dissolved oil in the nickel sulfate solution for electrodeposited nickel, removing residual surfactant in the system and ensuring the quality of a nickel product obtained by electrodepositing the nickel sulfate solution. The aim of the utility model is achieved by the following technical scheme.
The system for removing oil from the nickel sulfate solution for electrodepositing nickel is characterized by comprising a homogenizing tank, a coalescing resin column, an oil separation tank, a deep adsorption column, a cloth bag filter and an electrolytic tank, wherein a liquid outlet of the homogenizing tank is connected with a liquid inlet at the bottom of the coalescing resin column through a pump, a liquid outlet at the top of the coalescing resin column is connected with an oil separation tank water inlet pipe, an oil scraping plate and an oil outlet are arranged at the upper part of the oil separation tank, a water outlet at the lower part of the oil separation tank is connected with a liquid inlet of the deep adsorption column through a pump, a liquid outlet of the deep adsorption column is connected with a liquid inlet of the cloth bag filter, a liquid outlet of the cloth bag filter is connected with a liquid inlet of the electrolytic tank, an anolyte overflow port is arranged in the electrolytic tank, and the anolyte overflow port is connected with a liquid inlet of the homogenizing tank.
The workflow of the system is as follows: and (3) respectively feeding the nickel sulfate solution obtained after extraction and separation and the anode solution of the electrolytic tank into a homogenizing tank to be uniformly mixed to obtain the oily nickel sulfate solution to be treated. The nickel sulfate solution containing oil to be treated is conveyed by a pump, a coalescing resin column is added from bottom to top, insoluble oil is removed through the coalescing resin, water discharged from the top of the coalescing resin column enters an oil separation tank, and standing is carried out to realize oil-water separation. Due to the oil removal effect of the coalescent resin, insoluble oil in the nickel sulfate solution can be intercepted in a bed layer, the insoluble oil is enriched on the surface of the resin, small oil drops in a water body are enriched into large oil drops, the large oil drops are discharged out of the bed layer along with water flow and enter an oil separation tank to realize oil-water separation, and meanwhile, the surfactant sodium dodecyl sulfate is also mostly intercepted in the bed layer after passing through the coalescent resin bed layer, and enters the oil separation tank along with the oil to realize separation after being enriched to a certain degree. The coalescent resin column does not need to be regenerated, so that the oil-water separation time can be greatly reduced, the standing period is shortened, and the occupied area of equipment is reduced. And a small amount of floating oil at the upper part of the oil separation tank is used as dangerous waste to be treated, and liquid at the lower part is conveyed into a deep adsorption column by a pump to carry out deep adsorption oil removal, so that dissolved oil in the water body is removed. The effluent of the deep adsorption column is filtered by a cloth bag filter and then enters an electrolytic tank for nickel electrowinning. The cloth bag filter has the function of preventing broken or leaked resin from entering the electrolytic tank in the resin operation process, and influencing the quality of electrodeposited nickel.
Further, the homogenizing pool is provided with a mechanical stirring device so as to improve the mixing effect and improve the mixing efficiency.
Further, the oil-separating groove water inlet pipe is positioned in the middle of the oil-separating groove.
Further, the oil separation groove is in a truncated cone shape, the diameter of the top of the truncated cone is smaller than that of the bottom, and the ratio of the height to the diameter of the bottom is 2:1-10:1. The oil separation tank is made into a slender shape, the oil separation tank keeps a certain height, oil-water separation is facilitated, oil-water separation can be realized rapidly after the oil separation tank passes through the coalescent resin column, and the residence time of the oil separation tank is short and is only required to be 0.5-1 h. The upper part of the oil separation groove is narrower, which is more beneficial to the aggregation of the upper layer floating oil, and the oil is discharged from the upper layer oil outlet through the movement of the oil scraping plate.
Furthermore, when the liquid inlet mode of the deep adsorption column is up-in and down-out, the water outlet is set to be U-shaped, the height of the water outlet pipeline is higher than the filling height of resin, and the problem that dry beds or short flows exist in the resin is avoided.
Further, the liquid inlet of the electrolytic cell is positioned on the cathode side of the electrolytic cell.
The beneficial technical effects of the utility model are as follows: aiming at the specificity and high requirements of an electrodeposited nickel system, the coalescing resin is combined with the deep adsorption resin, so that the synchronous removal of insoluble oil and soluble oil can be realized at the same time, and the method has a good removal effect on surfactant substances added in the electrodeposited nickel process.
Drawings
Fig. 1 is a schematic diagram of a system for removing oil from a nickel sulfate solution for electrodeposited nickel.
Reference numerals: 1-homogenizing pool, 2-pump, 3-coalescent resin column, 4-oil-separating tank, 5-stirring device, 6-deep adsorption column, 7-cloth bag filter, 8-electrolytic tank, 9-scraping plate, 10-oil outlet, 11-electrode plate and 12-anode liquid overflow port.
Description of the embodiments
The technical scheme of the utility model is clearly and completely described below with reference to the attached drawings. It will be apparent that the described embodiments are only some, but not all, of the embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present utility model without making any inventive effort, are intended to fall within the scope of the present utility model.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or quantity or position.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
The system for removing oil from nickel sulfate solution for electrodeposited nickel comprises a homogenizing tank 1, a coalescing resin column 3, an oil separation tank 4, a deep adsorption column 6, a cloth bag filter 7 and an electrolytic tank 8, wherein a liquid outlet of the homogenizing tank 1 is connected with a liquid inlet at the bottom of the coalescing resin column 3 through a pump 2, a liquid outlet at the top of the coalescing resin column 3 is connected with an oil separation tank 4 water inlet pipe, an oil scraping plate 9 and an oil outlet 10 are arranged at the upper part of the oil separation tank 4, a water outlet at the lower part of the oil separation tank 4 is connected with a liquid inlet of the deep adsorption column 6 through the pump 2, a liquid outlet of the deep adsorption column 6 is connected with a liquid inlet of the cloth bag filter 7, a liquid outlet of the cloth bag filter 7 is connected with a liquid inlet of the electrolytic tank 8, the electrolytic tank 8 is provided with an electrode plate 11 and an anode liquid overflow 12, the liquid inlet of the electrolytic tank 8 is positioned at the cathode side of the electrolytic tank 8, and the anode liquid overflow 12 is connected with the liquid inlet of the homogenizing tank 1.
The homogenizing tank 1 is provided with a mechanical stirring device 5 to improve the mixing effect and the mixing efficiency. The water inlet pipe of the oil separation groove 4 is positioned in the middle of the oil separation groove 4. The oil separation groove 4 is in a shape of a circular truncated cone, the diameter of the top of the circular truncated cone is smaller than that of the bottom, and the ratio of the height to the diameter of the bottom is 2:1-10:1. The oil separation groove 4 is made into a slender shape and keeps a certain height, which is more conducive to oil-water separation, and can quickly realize oil-water separation after passing through the coalesced resin column 3. The upper part of the oil-separating groove 4 is made narrower, which is more conducive to the accumulation of the upper layer floating oil, and the oil is discharged from the upper layer oil outlet 10 by the movement of the oil scraping plate 9.
The liquid inlet mode of the deep adsorption column 6 can be lower inlet and upper outlet or upper inlet and lower outlet, when the liquid inlet mode is upper inlet and lower outlet, the water outlet is set to be U-shaped, the height of the water outlet pipeline is higher than the filling height of resin, and the problem that dry beds or short flows exist in the resin is avoided.
The workflow of the system is as follows: homogenizing the nickel sulfate solution obtained after extraction and separation and the anode solution of the electrolytic tank respectively, and uniformly mixing 1 to obtain the nickel sulfate solution containing oil to be treated. The nickel sulfate solution to be treated containing oil is conveyed by a pump 2, a coalescing resin column 3 is added from bottom to top, insoluble oil is removed through the coalescing resin, water discharged from the top of the coalescing resin column 3 enters an oil separation groove 4, and oil-water separation is realized through standing. Due to the oil removal effect of the coalescent resin, insoluble oil in the nickel sulfate solution can be intercepted in a bed layer, the insoluble oil is enriched on the surface of the resin, small oil drops in a water body are enriched into large oil drops, the large oil drops are discharged out of the bed layer along with water flow and enter an oil separation groove 4, so that oil-water separation is realized, and meanwhile, the surfactant sodium dodecyl sulfate is also mostly intercepted in the bed layer after passing through the coalescent resin bed layer, and enters the oil separation groove 4 along with oil after being enriched to a certain degree. The coalescent resin column 3 does not need regeneration, so that the oil-water separation time can be greatly reduced, the standing period is shortened, and the occupied area of equipment is reduced. A small amount of floating oil at the upper part of the oil separation tank 4 is used as hazardous waste to be disposed, and liquid at the lower part is conveyed into a deep adsorption column 6 by a pump 2 to carry out deep adsorption oil removal, so that dissolved oil in the water body is removed. The water discharged from the deep adsorption column 6 is filtered by a cloth bag filter 7 and enters an electrolytic tank 8 for nickel electrowinning. The cloth bag filter 7 is used for preventing broken or leaked resin from entering the electrolytic tank 8 in the resin operation process, and influencing the quality of electrodeposited nickel.
Although embodiments of the present utility model have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the utility model, and that variations, modifications, alternatives, and variations may be made in the above embodiments by those skilled in the art without departing from the spirit and principles of the utility model. The protection scope of the present utility model is defined by the claims and the equivalents thereof.
Claims (6)
1. The system for removing oil from the nickel sulfate solution for electrodepositing nickel is characterized by comprising a homogenizing tank, a coalescing resin column, an oil separation tank, a deep adsorption column, a cloth bag filter and an electrolytic tank, wherein a liquid outlet of the homogenizing tank is connected with a liquid inlet at the bottom of the coalescing resin column through a pump, a liquid outlet at the top of the coalescing resin column is connected with an oil separation tank water inlet pipe, an oil scraping plate and an oil outlet are arranged at the upper part of the oil separation tank, a water outlet at the lower part of the oil separation tank is connected with a liquid inlet of the deep adsorption column through a pump, a liquid outlet of the deep adsorption column is connected with a liquid inlet of the cloth bag filter, a liquid outlet of the cloth bag filter is connected with a liquid inlet of the electrolytic tank, an anolyte overflow port is arranged in the electrolytic tank, and the anolyte overflow port is connected with a liquid inlet of the homogenizing tank.
2. The system of claim 1, wherein the homogenizing tank is provided with a mechanical stirring device.
3. The system of claim 1, wherein the sump inlet tube is positioned in the middle of the sump.
4. The system of claim 1, wherein the oil separator is in the shape of a circular truncated cone, the diameter of the top of the circular truncated cone is smaller than the diameter of the bottom, and the ratio of the height to the diameter of the bottom is 2:1-10:1.
5. The system of claim 1, wherein the water outlet is U-shaped when the liquid inlet mode of the deep adsorption column is up-in-down-out, and the height of the water outlet pipeline is higher than the height of the resin filling.
6. The system of claim 1, wherein the electrolyzer inlet is located on the cathode side of the electrolyzer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322575396.XU CN221014602U (en) | 2023-09-22 | 2023-09-22 | Nickel sulfate solution oil removal system for electrodeposited nickel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322575396.XU CN221014602U (en) | 2023-09-22 | 2023-09-22 | Nickel sulfate solution oil removal system for electrodeposited nickel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221014602U true CN221014602U (en) | 2024-05-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322575396.XU Active CN221014602U (en) | 2023-09-22 | 2023-09-22 | Nickel sulfate solution oil removal system for electrodeposited nickel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221014602U (en) |
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2023
- 2023-09-22 CN CN202322575396.XU patent/CN221014602U/en active Active
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