CN110975390A - Battery-grade lithium hydroxide liquid purification device - Google Patents
Battery-grade lithium hydroxide liquid purification device Download PDFInfo
- Publication number
- CN110975390A CN110975390A CN201911384873.6A CN201911384873A CN110975390A CN 110975390 A CN110975390 A CN 110975390A CN 201911384873 A CN201911384873 A CN 201911384873A CN 110975390 A CN110975390 A CN 110975390A
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- lithium hydroxide
- kettle body
- battery
- purification device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 title claims abstract description 70
- 239000007788 liquid Substances 0.000 title claims abstract description 16
- 238000000746 purification Methods 0.000 title claims abstract description 16
- 238000005192 partition Methods 0.000 claims abstract description 16
- 238000007599 discharging Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000007789 sealing Methods 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims 1
- 235000000396 iron Nutrition 0.000 abstract description 5
- 238000000605 extraction Methods 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000012452 mother liquor Substances 0.000 description 17
- 238000002425 crystallisation Methods 0.000 description 12
- 230000008025 crystallization Effects 0.000 description 12
- 238000001914 filtration Methods 0.000 description 11
- 239000012535 impurity Substances 0.000 description 10
- 239000000463 material Substances 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 239000011148 porous material Substances 0.000 description 4
- XGZVUEUWXADBQD-UHFFFAOYSA-L lithium carbonate Chemical compound [Li+].[Li+].[O-]C([O-])=O XGZVUEUWXADBQD-UHFFFAOYSA-L 0.000 description 3
- 229910052808 lithium carbonate Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 229910000746 Structural steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- PQVSTLUFSYVLTO-UHFFFAOYSA-N ethyl n-ethoxycarbonylcarbamate Chemical compound CCOC(=O)NC(=O)OCC PQVSTLUFSYVLTO-UHFFFAOYSA-N 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- GLXDVVHUTZTUQK-UHFFFAOYSA-M lithium hydroxide monohydrate Substances [Li+].O.[OH-] GLXDVVHUTZTUQK-UHFFFAOYSA-M 0.000 description 1
- 229940040692 lithium hydroxide monohydrate Drugs 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000010413 mother solution Substances 0.000 description 1
- 235000019633 pungent taste Nutrition 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
- B01D29/58—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection arranged concentrically or coaxially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/96—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor in which the filtering elements are moved between filtering operations; Particular measures for removing or replacing the filtering elements; Transport systems for filters
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01D—COMPOUNDS OF ALKALI METALS, i.e. LITHIUM, SODIUM, POTASSIUM, RUBIDIUM, CAESIUM, OR FRANCIUM
- C01D15/00—Lithium compounds
- C01D15/02—Oxides; Hydroxides
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/80—Compositional purity
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Battery Electrode And Active Subsutance (AREA)
Abstract
The invention discloses a battery-grade lithium hydroxide liquid purification device, and relates to the technical field of lithium hydroxide production. The extraction device comprises a workbench, four support columns are fixedly connected to the bottom surface of the workbench, a kettle body is fixedly connected to the inner surface of the workbench, an electric cabinet is fixedly connected to the side walls of the support columns, a feeding port is formed in the top of the kettle body, a discharging port is formed in the side wall of the bottom of the kettle body, a partition plate is fixedly connected to the inner wall of the kettle body, a rectangular groove is formed in the top surface of the partition plate, two angle irons are fixedly connected to the bottom surface of the partition plate, a fixing seat is fixedly connected to the bottom surface of the partition plate through the two angle irons, and the bottom of the fixing seat penetrates through the kettle body and extends to the bottom of the kettle body.
Description
Technical Field
The invention relates to the technical field of lithium hydroxide production, in particular to a battery-grade lithium hydroxide liquid purification device.
Background
The lithium hydroxide is white monoclinic fine crystal, has pungent taste and strong basicity, can absorb carbon dioxide and moisture in the air, and is dissolved in water. The high-purity lithium hydroxide is used in national defense industry, atomic energy industry, aerospace industry andthe important source of lithium element in the electronic industrial products has wide application in high and new technical fields such as new energy and new materials. The currently adopted method for preparing lithium hydroxide is a lithium carbonate causticization method, wherein refined lime milk and lithium carbonate are mixed according to the proportion of 1.08: 1, the concentration of causticized liquid is adjusted to be 18g/L-20g/L, the mixture is heated to boiling and stirred strongly, causticization is carried out for about 30min, and the reaction is as follows: ca (OH)2+Li2CO3→CaCO3+2 LiOH. The reaction yielded a LiOH solution with a concentration of about 3.5%. The insoluble residue was removed, and after separation, the mother solution of crystallization was concentrated under reduced pressure and crystallized to obtain lithium hydroxide monohydrate.
The existing crystallization mother liquor is filtered by a single time, impurities in the crystallization mother liquor cannot be filtered thoroughly, the purity of the prepared lithium hydroxide is low easily, frequent repeated filtration easily causes blockage of a filtering mechanism, and a closed kettle is not beneficial to cleaning of the filtering mechanism, so that the technical problem to be solved by technical personnel in the field is how to improve the filtering effect of the crystallization mother liquor and simplify the maintenance process.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a battery-grade lithium hydroxide liquid purification device, which solves the problems in the background technology.
In order to achieve the purpose, the invention is realized by the following technical scheme: a battery-grade lithium hydroxide liquid purification device comprises a workbench, wherein four support columns are fixedly connected to the bottom surface of the workbench, a kettle body is fixedly connected to the inner surface of the workbench, an electric cabinet is fixedly connected to the side walls of the support columns, a feeding opening is formed in the top of the workbench, and a discharging opening is formed in the side wall of the bottom of the workbench;
cauldron internal wall fixedly connected with baffle, the rectangular channel has been seted up to the baffle top surface, two angle irons of baffle bottom surface fixedly connected with, two angle iron fixedly connected with fixing bases of baffle underrun, the fixing base bottom runs through the cauldron body and extends to cauldron body bottom, the through-hole has all been seted up all around to the fixing base, fixing base internal surface threaded connection has the dismantlement piece.
Further, the inlet tube has been run through at cauldron body top, the inlet tube is located the internal portion one end of cauldron and runs through the baffle and extend to the baffle bottom, inlet tube top intercommunication has the delivery pump, the electric cabinet output passes through electric wire and delivery pump input end electric connection.
Further, the delivery pump delivery outlet intercommunication has the discharging pipe, the discharging pipe end runs through the cauldron body and extends to the internal portion of cauldron.
Further, dismantle five filter screens of the inside fixedly connected with of piece, five the filter screen appearance is the back taper structure, five the filter screen from top to bottom the filtration pore internal diameter is 1mm, 0.8mm, 0.6mm, 0.4mm and 0.2mm respectively, dismantle piece bottom week side cover and be equipped with the sealing washer.
Further, the equal fixedly connected with fixed plate of support column lateral wall, four the support column all connects through two liang of fixed plates, dismantle a fixedly connected with handle in bottom, rectangle groove edge is the arc structure.
The invention has the following beneficial effects:
1. this battery level lithium hydroxide liquid purification device filters crystallization mother liquor step by step through utilizing the multiunit filter screen, can improve extraction element's filtration performance, and the back taper structure of filter screen is favorable to filterable impurity gathering, prevents that impurity from attaching to and blockking up the filtration pore on the filter screen, carries out the loop filter through the delivery pump, compares with prior art, has further improved the filter effect for the lithium hydroxide purity that makes improves.
2. This battery level lithium hydroxide liquid purification device through the connection structure of dismantling piece and fixing base, can realize quick dismantlement and the cleanness of filter screen, compares with prior art, dismantles the piece and can simplify the clean step of filter screen, alleviates maintainer's work burden.
Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a battery-grade lithium hydroxide liquid purification apparatus according to the present invention;
FIG. 2 is a schematic view of the opposite side of FIG. 1;
FIG. 3 is a schematic top view of the structure of FIG. 1;
FIG. 4 is a schematic cross-sectional view taken along line A-A of FIG. 3;
fig. 5 is a partially enlarged view of B in fig. 4.
In the drawings, the components represented by the respective reference numerals are listed below:
in the figure: 1-workbench, 2-support column, 3-fixing plate, 4-kettle body, 5-electric cabinet, 6-feeding port, 7-discharging port, 8-water inlet pipe, 9-conveying pump, 10-discharging pipe, 11-fixing seat, 12-disassembling block, 13-partition plate, 14-handle, 15-rectangular groove, 16-filter screen, 17-angle iron, 18-through hole and 19-sealing ring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-5, the present invention provides a technical solution: a battery-grade lithium hydroxide liquid purification device comprises a workbench 1, wherein the bottom surface of the workbench 1 is fixedly connected with four supporting columns 2, the inner surface of the workbench 1 is fixedly connected with a kettle body 4, the side walls of the supporting columns 2 are fixedly connected with a DVP60ES00R2 type electric cabinet 5, the top of the kettle body 4 is provided with a feeding port 6, and the side walls of the bottom of the kettle body 4 are provided with a discharging port 7;
a partition plate 13 is fixedly connected to the inner wall of the kettle body 4, a rectangular groove 15 is formed in the top surface of the partition plate 13, two angle irons 17 are fixedly connected to the bottom surface of the partition plate 13, a fixed seat 11 is fixedly connected to the bottom surface of the partition plate 13 through the two angle irons 17, the bottom of the fixed seat 11 penetrates through the kettle body 4 and extends to the bottom of the kettle body 4, through holes 18 are formed in the periphery of the fixed seat 11, and a dismounting block 12 is in threaded connection with the inner; the disassembly block 12 is independently removable to facilitate cleaning of the five screens 16.
The top of the kettle body 4 is penetrated with a water inlet pipe 8, one end of the water inlet pipe 8, which is positioned in the kettle body 4, penetrates through a partition plate 13 and extends to the bottom of the partition plate 13, the top end of the water inlet pipe 8 is communicated with an SML-3500 type delivery pump 9, the output end of the electric cabinet 5 is electrically connected with the input end of the delivery pump 9 through an electric wire, the output port of the delivery pump 9 is communicated with a discharge pipe 10, and the tail end of the discharge pipe 10 penetrates through the kettle body 4 and extends into the; the filtered crystallization mother liquor can be re-introduced into the top of the partition plate 13 through the water inlet pipe 8.
Wherein, dismantle five filter screens 16 of 12 inside fixedly connected with of piece, five filter screens 16 appearances are the back taper structure, five filter screens 16 are 1mm respectively from top to bottom filtration pore internal diameter, 0.8mm, 0.6mm, 0.4mm and 0.2mm, the aperture reduces in proper order and can filters impurity step by step, improve filter performance of filter screen 16, 12 bottom week side covers of dismantlement piece are equipped with sealing washer 19, sealing washer 19 is convenient for improve the leakproofness between dismantlement piece 12 and the fixing base 11, avoid dismantling 12 installation back crystallization mother liquor of piece and ooze from the gap.
Wherein, the equal fixedly connected with fixed plate 3 of 2 lateral walls of support column, four support columns 2 all through 3 two liang of connections of fixed plate, fixed plate 3 can improve the structural firmness of support column 2, dismantles 12 bottom fixedly connected with handles 14, and the 15 edges of rectangular channel are the arc structure, and the arc structure is convenient for crystallization mother liquor to flow in dismantlement piece 12.
The specific application of this embodiment is: pouring crystallization mother liquor into the kettle body 4 from the material inlet 6, wherein the mother liquor falls onto the top surface of the partition plate 13, because the edge of the rectangular groove 15 is of an arc structure, the mother liquor flows into the disassembly block 12 along the rectangular groove 15, impurities in the mother liquor are filtered step by step through five filter screens 16 and then flow out of the through hole 18 and fall onto the bottom of the kettle body 4, the electric cabinet 5 controls the conveying pump 9 to be started, the conveying pump 9 sucks the mother liquor filtered at the bottom of the kettle body 4 into the water inlet pipe 8 again, the mother liquor in the water inlet pipe 8 flows into the kettle body 4 through the material outlet pipe 10, the crystallization mother liquor remained in the material outlet pipe 10 falls onto the top surface of the partition plate 13 again, and purification of the crystallization mother liquor is realized through continuous circulating filtration, the mother liquor is discharged from the material outlet 7 after being; realize filtering step by step of impurity through the filtration pore of five 16 different specifications sizes of filter screen, the back taper structure is convenient for filterable impurity and is dismantling 12 axle center department gathering, avoid impurity attached to filter screen 16 surface, prevent to filter the jam, when filterable impurity is too much between filter screen 16, manual rotatory handle 14 will be dismantled piece 12 and pull down, can carry out unified clearance to impurity, make dismantlement piece 12 can reuse, sealing washer 19 is convenient for improve the leakproofness between dismantlement piece 12 and the fixing base 11, avoid dismantling 12 installation back crystallization mother liquor and ooze from the gap.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (5)
1. A battery-grade lithium hydroxide liquid purification device comprises a workbench (1), and is characterized in that: the bottom surface of the workbench (1) is fixedly connected with four supporting columns (2), the inner surface of the workbench (1) is fixedly connected with a kettle body (4), the side walls of the supporting columns (2) are fixedly connected with an electric cabinet (5), the top of the kettle (4) is provided with a feeding port (6), and the side wall of the bottom of the kettle (4) is provided with a discharging port (7);
cauldron body (4) inner wall fixedly connected with baffle (13), rectangular channel (15) have been seted up to baffle (13) top surface, two angle bars (17) of baffle (13) bottom surface fixedly connected with, baffle (13) underrun through two angle bars (17) fixedly connected with fixing base (11), fixing base (11) bottom runs through cauldron body (4) and extends to cauldron body (4) bottom, through-hole (18) have all been seted up all around fixing base (11), fixing base (11) internal surface threaded connection has dismantlement piece (12).
2. The battery-grade lithium hydroxide liquid purification device according to claim 1, wherein a water inlet pipe (8) penetrates through the top of the kettle body (4), the water inlet pipe (8) is located inside the kettle body (4), one end of the water inlet pipe penetrates through the partition plate (13) and extends to the bottom of the partition plate (13), the top end of the water inlet pipe (8) is communicated with a delivery pump (9), and the output end of the electric cabinet (5) is electrically connected with the input end of the delivery pump (9) through an electric wire.
3. The battery-grade lithium hydroxide liquid purification device according to claim 2, wherein the output port of the delivery pump (9) is communicated with a discharge pipe (10), and the tail end of the discharge pipe (10) penetrates through the kettle body (4) and extends to the inside of the kettle body (4).
4. The battery-grade lithium hydroxide liquid purification device according to claim 1, wherein five filter screens (16) are fixedly connected inside the disassembly block (12), the five filter screens (16) are of an inverted cone structure, the inner diameters of filter holes of the five filter screens (16) from top to bottom are respectively 1mm, 0.8mm, 0.6mm, 0.4mm and 0.2mm, and a sealing ring (19) is sleeved on the peripheral side face of the bottom of the disassembly block (12).
5. The battery-grade lithium hydroxide liquid purification device according to claim 1, wherein the side walls of the support columns (2) are fixedly connected with fixing plates (3), four support columns (2) are connected in pairs through the fixing plates (3), the bottom of the disassembly block (12) is fixedly connected with a handle (14), and the edge of the rectangular groove (15) is of an arc structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911384873.6A CN110975390A (en) | 2019-12-28 | 2019-12-28 | Battery-grade lithium hydroxide liquid purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911384873.6A CN110975390A (en) | 2019-12-28 | 2019-12-28 | Battery-grade lithium hydroxide liquid purification device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110975390A true CN110975390A (en) | 2020-04-10 |
Family
ID=70076691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911384873.6A Withdrawn CN110975390A (en) | 2019-12-28 | 2019-12-28 | Battery-grade lithium hydroxide liquid purification device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110975390A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114604880A (en) * | 2022-04-21 | 2022-06-10 | 江西金辉锂业有限公司 | Preparation and purification device for battery-grade lithium hydroxide |
-
2019
- 2019-12-28 CN CN201911384873.6A patent/CN110975390A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114604880A (en) * | 2022-04-21 | 2022-06-10 | 江西金辉锂业有限公司 | Preparation and purification device for battery-grade lithium hydroxide |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110975390A (en) | Battery-grade lithium hydroxide liquid purification device | |
| CN203315784U (en) | Scraper crystallization separator | |
| CN208115203U (en) | A kind of equipment of inorganic salts freezing and crystallizing purification | |
| CN216129446U (en) | Industrial waste acid recycling and purifying system | |
| CN109701313A (en) | A kind of Chinese medicine dreg filtering extraction element | |
| CN112076692A (en) | Purification device for chemical product production and use method thereof | |
| CN211595271U (en) | Industrial sewage treatment device | |
| CN210206095U (en) | 1-aminoanthraquinone secondary suction filtration device | |
| CN207324605U (en) | A kind of liquid distilled from honeysuckle flowers or lotus leaves water production device with automatic fitration | |
| CN220194514U (en) | Secondary liquid alkali filters stirred tank | |
| CN218404847U (en) | Slag discharge separator | |
| CN212548551U (en) | Sugar solution secondary filtration system for sugar manufacturing workshop | |
| CN219399126U (en) | 6-chloronicotinic acid separation and purification equipment | |
| CN216172316U (en) | Washing kettle for producing 4, 4-dichloromethyl biphenyl | |
| CN204714648U (en) | A kind of dregs of beans leaches workshop washing water filtration unit | |
| CN215087027U (en) | Sodium formate purification and filtration device | |
| CN216755687U (en) | Be used for green water circle device of aluminum paste production | |
| CN211752836U (en) | Zirconium oxychloride crystal separation and suction filtration tank | |
| CN208716861U (en) | A kind of device producing cupric sulfate purified | |
| CN218107006U (en) | Filter equipment and decompression filtration equipment | |
| CN215798984U (en) | Rapid heating evaporator for extracting copper hydroxide based on waste copper-containing etching solution | |
| CN218106928U (en) | Phytosterol ester separator | |
| CN217489894U (en) | Walnut oil multistage filtration edulcoration device | |
| CN210980188U (en) | Air purification device for food processing workshop | |
| CN216236441U (en) | But multiple purification and filtration device of spent acid water of quick replacement filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200410 |
|
| WW01 | Invention patent application withdrawn after publication |