CN116328364A - Solvent lithium circulating type differential extraction equipment and extraction method - Google Patents
Solvent lithium circulating type differential extraction equipment and extraction method Download PDFInfo
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- CN116328364A CN116328364A CN202310608792.XA CN202310608792A CN116328364A CN 116328364 A CN116328364 A CN 116328364A CN 202310608792 A CN202310608792 A CN 202310608792A CN 116328364 A CN116328364 A CN 116328364A
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- 238000000605 extraction Methods 0.000 title claims abstract description 219
- 239000002904 solvent Substances 0.000 title claims abstract description 38
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 28
- 239000007791 liquid phase Substances 0.000 claims abstract description 126
- 230000005540 biological transmission Effects 0.000 claims abstract description 29
- 239000000284 extract Substances 0.000 claims abstract description 13
- 239000007788 liquid Substances 0.000 claims description 49
- 238000007670 refining Methods 0.000 claims description 13
- 239000000126 substance Substances 0.000 claims description 5
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 239000003350 kerosene Substances 0.000 claims description 3
- XKBGEWXEAPTVCK-UHFFFAOYSA-M methyltrioctylammonium chloride Chemical compound [Cl-].CCCCCCCC[N+](C)(CCCCCCCC)CCCCCCCC XKBGEWXEAPTVCK-UHFFFAOYSA-M 0.000 claims description 3
- -1 phenyl azo beta-naphthol Chemical compound 0.000 claims description 3
- 230000000630 rising effect Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 238000007865 diluting Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 17
- 238000000034 method Methods 0.000 abstract description 4
- 238000007790 scraping Methods 0.000 description 6
- 238000007667 floating Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 238000004321 preservation Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- JWAZRIHNYRIHIV-UHFFFAOYSA-N beta-hydroxynaphthyl Natural products C1=CC=CC2=CC(O)=CC=C21 JWAZRIHNYRIHIV-UHFFFAOYSA-N 0.000 description 2
- 229950011260 betanaphthol Drugs 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005504 petroleum refining Methods 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/04—Solvent extraction of solutions which are liquid
- B01D11/0496—Solvent extraction of solutions which are liquid by extraction in microfluidic devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/04—Solvent extraction of solutions which are liquid
- B01D11/0476—Moving receptacles, e.g. rotating receptacles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/04—Solvent extraction of solutions which are liquid
- B01D11/0492—Applications, solvents used
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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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Extraction Or Liquid Replacement (AREA)
Abstract
The invention discloses solvent lithium circulating type differential extraction equipment and an extraction method, which relate to the technical field of extraction equipment and comprise an extraction tank, wherein a rotating assembly is rotationally arranged in the extraction tank, and the extraction tank further comprises: the circulating extraction mechanism is fixedly arranged in the extraction tank and is in transmission connection with the rotating assembly, and when the rotating assembly rotates, the circulating extraction mechanism is synchronously driven to circularly extract the upper light liquid phase of the extraction tank and inject the light liquid phase into the bottom of the extraction tank. The rotation assembly rotates to passively drive the circulating extraction mechanism to work, then the circulating extraction mechanism is used for continuously injecting the upper light liquid phase of the extraction tank to the bottom of the extraction tank, and the rotation assembly is matched for rotation mixing, so that the light liquid phase and the heavy liquid phase are mixed in a countercurrent mode, the extraction effect is improved, the two processes of mixing and circulating are completed through single driving, the operation is more convenient, and the equipment cost is reduced.
Description
Technical Field
The invention relates to the technical field of extraction equipment, in particular to solvent lithium circulating differential extraction equipment and an extraction method.
Background
The extraction is a unit operation of separating a mixture by utilizing the different solubilities of components in a solvent in a system, and is a method of transferring solute substances from one solvent to another solvent by utilizing the difference of solubility or partition coefficients of the substances in two solvents which are mutually insoluble (or slightly soluble), and the extraction is widely applied to the industries of chemistry, metallurgy, food and the like and is generally applied to the petroleum refining industry.
If the authority notice number is CN214181899U, the authority notice day is 2021.09.14, the name is "extraction tank of solvent extraction device" Chinese patent, its specific structure includes the extraction tank, the top of extraction tank is filled with the cover, the inlet pipe has been inserted on the top of cover, the top of cover is provided with the motor, the bottom of motor is provided with the puddler, the puddler inserts the extraction tank, the surface connection of puddler has the stirring strip, the surface of extraction tank is provided with heat preservation shell, heat preservation shell's side is provided with the viewing aperture, the bottom of extraction tank is provided with the discharging pipe, heat preservation shell's bottom is fixed with the locating pin, the support frame is installed to heat preservation shell's bottom, the mounting groove has been opened on the top of support frame, the locating hole has been opened to the bottom of mounting groove, the locating pin inserts the locating hole, the bottom hole is opened to the bottom of mounting groove, the discharging pipe passes.
Above-mentioned application passes through the motor and drives puddler and stirring strip rotation, fully agitates the solvent to the stirring strip is scrubbed extraction tank inner wall, thereby has realized the solvent intensive mixing, and extraction effect is good, can keep extraction tank inner wall clean moreover, like the above-mentioned application is the same, all sets up rabbling mechanism and stirs the solvent in order to improve extraction effect when carrying out extraction operation at present extraction equipment, but because the heavy liquid phase of extraction and the layering of branch liquid phase each other, can't realize two liquid phase intensive contact and mix through rabbling mechanism alone, thereby influence two liquid phase mass transfer effect, influence the effect of extraction promptly.
Disclosure of Invention
The invention aims to provide solvent lithium circulating type differential extraction equipment and an extraction method, which are used for solving the defects in the prior art.
In order to achieve the above object, the present invention provides the following technical solutions: the utility model provides a solvent lithium circulation type differential extraction equipment, includes the extraction jar, the rotation is provided with the rotating assembly in the extraction jar, still includes: the circulating extraction mechanism is fixedly arranged in the extraction tank and is in transmission connection with the rotating assembly, and when the rotating assembly rotates, the circulating extraction mechanism is synchronously driven to circularly extract the upper light liquid phase of the extraction tank and inject the light liquid phase into the bottom of the extraction tank.
As a further description of the above technical solution: the dynamic differential assembly is communicated with the bottom end of the circulating extraction mechanism, and is in transmission connection with the circulating extraction mechanism, and when the circulating extraction mechanism conveys the light liquid phase in a circulating mode, the dynamic differential assembly is synchronously driven to differentially and uniformly diffuse the light liquid phase in the extraction tank so as to realize differential contact mass transfer of the light liquid phase and the heavy liquid phase.
As a further description of the above technical solution: the top of extraction jar is provided with actuating mechanism, and actuating mechanism with rotating assembly transmission connection.
As a further description of the above technical solution: the driving mechanism comprises a mounting frame, the mounting frame is mounted at the top of the extraction tank, and a driving motor is mounted on the mounting frame and is in transmission connection with the rotating assembly through a connecting shaft.
As a further description of the above technical solution: the rotating assembly comprises a plurality of L-shaped side frames, the horizontal ends of the L-shaped side frames are mutually fixed through connecting seats and connected with the driving mechanism, and a plurality of groups of transverse frames are horizontally fixed on the inner sides of the L-shaped side frames.
As a further description of the above technical solution: the circulating extraction mechanism comprises a central tube, the central tube is vertically fixed in the extraction tank, a rotating shaft is rotatably arranged on the inner side of the central tube, spiral blades are fixed on the outer side of the rotating shaft, and the top end of the rotating shaft is connected with the rotating assembly.
As a further description of the above technical solution: the dynamic differential assembly comprises a disc box and a linkage mechanism, the top of the disc box is communicated with the bottom of the central tube through an interface seat, a plurality of strip-shaped openings are uniformly formed in the surface of the disc box, differential rollers are arranged in the strip-shaped openings in a sealing and rotating mode, liquid outlet holes are uniformly formed in the differential rollers, the linkage mechanism is rotatably arranged at the bottom of the disc box, and the linkage mechanism is in transmission connection with the differential rollers.
As a further description of the above technical solution: the linkage mechanism comprises a fluted disc and a plurality of transmission gears, the fluted disc is rotatably arranged at the bottom of the inner side of the disc box, the top of the fluted disc is connected with the rotating shaft, the transmission gears are fixed at the end heads of the differential rollers, and the transmission gears are meshed with the surface of the fluted disc.
As a further description of the above technical solution: the device further comprises a multi-stage refining mechanism which is arranged in the extraction tank and is assembled so that when the rotating assembly rotates, the multi-stage refining mechanism passively intercepts and refines the light liquid phase which is converged into a liquid mass state when the heavy liquid phase rises into a liquid drop state.
An extraction method based on the solvent lithium circulating differential extraction equipment comprises the following steps:
injecting a feed liquid and an extract liquid of solvent lithium into the extraction tank, and performing rotary mixing extraction through a rotary assembly; wherein the extract is Kzu288 extractant (Kzu extractant comprises the chemical components of phenylazo beta-naphthol and methyl tri-n-octyl ammonium chloride in a molar ratio of 2:1, and is diluted with solvents such as kerosene in a ratio of 3:1 during use);
in the mixed extraction process, the light liquid phase floats upwards and is layered with the heavy liquid phase, and at the moment, the rotating assembly synchronously drives the circulating extraction mechanism to circularly extract the upper light liquid phase of the extraction tank to be injected to the bottom of the extraction tank for circulating mixed extraction;
the circulating extraction mechanism is used for circularly extracting the upper light liquid phase of the extraction tank, and synchronously driving the dynamic differential component to uniformly disperse the light liquid phase in the extraction tank when the light liquid phase is injected to the bottom of the extraction tank so as to realize differential contact mass transfer extraction of the light liquid phase and the heavy liquid phase.
In the technical scheme, the solvent lithium circulating type differential extraction equipment and the extraction method provided by the invention have the following beneficial effects:
the rotating assembly in the solvent lithium circulating type differential extraction equipment rotates to passively drive the circulating extraction mechanism to work, then the upper light liquid phase of the extraction tank is continuously injected to the bottom of the extraction tank in a circulating mode through the circulating extraction mechanism, and the rotating assembly is matched to rotate and mix, so that the light liquid phase and the heavy liquid phase are mixed in a countercurrent mode, the extraction effect is improved, meanwhile, the two processes of mixing and circulation are completed through single driving, the operation is more convenient, and the equipment cost is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
Fig. 1 is a schematic structural diagram of a solvent lithium circulating type differential extraction device according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a solvent lithium circulating type differential extraction apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a circulating extraction mechanism according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the internal structure of a circulating extraction mechanism according to an embodiment of the present invention;
FIG. 5 is a schematic structural view of a rotating assembly according to an embodiment of the present invention;
FIG. 6 is a schematic view of an installation structure of a multi-stage fining mechanism according to an embodiment of the present invention;
FIG. 7 is a schematic structural view of a multi-stage fining mechanism according to an embodiment of the present invention;
fig. 8 is a schematic structural view of a multi-stage fining mechanism according to another embodiment of the present invention.
Reference numerals illustrate:
1. an extraction tank; 2. a driving mechanism; 21. a mounting frame; 22. a driving motor; 3. a rotating assembly; 31. an L-shaped side frame; 32. a cross frame; 33. an annular frame; 34. a multi-stage thinning mechanism; 341. a circular grid; 342. round table rack; 343. a first annular shelf; 344. a scraping frame; 345. a second annular shelf; 4. a steady flow frame; 5. a circulating extraction mechanism; 51. a central tube; 511. an interface seat; 52. a rotating shaft; 521. a helical blade; 53. a disk cartridge; 531. a strip-shaped opening; 61. a differential roller; 62. a liquid outlet hole; 63. a transmission gear; 64. a fluted disc.
Detailed Description
In order to make the technical scheme of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
Referring to fig. 1-8, the embodiment of the invention provides a technical scheme: the utility model provides a solvent lithium circulation type differential extraction equipment, includes extraction tank 1, and extraction tank 1 is for being used for splendid attire extract and feed liquid to carry out extraction processing's cylindric jar body structure, and extraction tank 1's outside is provided with the supporting legs, and extraction tank 1 rotation is provided with rotating assembly 3, still includes: the circulating extraction mechanism 5 is fixedly arranged in the extraction tank 1 and is positioned on the vertical middle line in the extraction tank 1, the circulating extraction mechanism 5 is in transmission connection with the rotating assembly 3, and when the rotating assembly 3 rotates, the synchronous driving of the circulating extraction mechanism 5 circularly extracts the upper light liquid phase of the extraction tank 1 to be injected into the bottom of the extraction tank 1. When solvent lithium is extracted, feed liquid and extract liquid of the solvent lithium are injected into an extraction tank 1, and rotary mixing extraction is carried out through a rotary component 3, during mixed extraction, light liquid phase in the extraction tank 1 floats upwards and is layered with heavy liquid phase, (the heavy liquid phase refers to liquid with high density, the light liquid phase refers to liquid with low density), the top end of a circulating extraction mechanism 5 is provided with a liquid inlet, the liquid inlet is positioned in the light liquid phase, the rotary component 3 continuously rotates and passively drives the circulating extraction mechanism 5 to work, then the upper light liquid phase of the extraction tank 1 is continuously injected to the bottom of the extraction tank 1 in a circulating mode through the circulating extraction mechanism 5, rotary mixing is carried out by matching with the rotary component 3, the light liquid phase and the heavy liquid phase are subjected to convective mixing, the extraction effect is improved, meanwhile, two processes of single driving to complete mixing and circulation are realized, the operation is more convenient, the equipment cost is reduced, the inner side of the extraction tank 1 is positioned at the top end of the circulating extraction mechanism 5, the steady flow frame 4 consists of a plurality of baffles arranged in a radial mode, and annular baffles which are sequentially increased.
In still another embodiment provided by the invention, the top of the extraction tank 1 is provided with the driving mechanism 2, the driving mechanism 2 is in transmission connection with the rotating assembly 3, the driving mechanism 2 comprises a mounting frame 21, the mounting frame 21 is mounted on the top of the extraction tank 1, and a driving motor 22 is mounted on the mounting frame 21, and the driving motor 22 is in transmission connection with the rotating assembly 3 through a connecting shaft. I.e. the rotating assembly 3 is driven to rotate in the extraction tank 1 by the drive motor 22.
In still another embodiment of the present invention, the rotating assembly 3 includes a plurality of L-shaped side frames 31, the horizontal ends of the L-shaped side frames 31 are fixed to each other by a connecting base and connected to the driving mechanism 2, and a plurality of groups of cross frames 32 are horizontally fixed to the inner side of the L-shaped side frames 31. Optionally, the three L-shaped side frames 31 are arranged in total, the three L-shaped side frames 31 are distributed on the inner side of the extraction tank 1 in a ring shape at equal angles, the top ends of the horizontal sections of the three L-shaped side frames 31 are connected with the connecting shaft of the driving motor 22 through connecting seats, an annular frame 33 is fixed between the three L-shaped side frames 31, the annular frame 33 enhances the stability of the integral structure of the rotating assembly 3, the driving motor 22 drives the three L-shaped side frames 31 to rotate, and the three L-shaped side frames 31 are matched with a plurality of groups of horizontal frames 32 horizontally fixed on the three L-shaped side frames to rotate for mixed extraction.
In still another embodiment provided by the present invention, preferably, the circulating extraction mechanism 5 includes a central tube 51, the central tube 51 is vertically fixed in the extraction tank 1, and a rotating shaft 52 is rotatably provided on the inner side of the central tube 51, a spiral blade 521 is fixed on the outer side of the rotating shaft 52, and the top end of the rotating shaft 52 is connected with the rotating assembly 3. The central tube 51 is a tubular structure with two open ends, and is vertically fixed at the central position inside the extraction tank 1, the top end of the rotating shaft 52 is coaxially connected with a connecting seat between the horizontal ends of the plurality of L-shaped side frames 31 in the rotating assembly 3, when the rotating assembly 3 rotates, the rotating shaft 52 is synchronously driven to rotate, and the rotating shaft 52 drives the spiral blades 521 on the rotating shaft to rotate, so that the light liquid phase on the upper layer of the extraction tank 1 is extracted and conveyed to the bottom of the extraction tank 1 by matching with the central tube 51, namely, the light liquid phase is extracted and conveyed to the lower part of the heavy liquid phase in a circulating way, then the light liquid phase automatically floats upwards and is mixed and extracted by matching with the rotation of the rotating member 3, the light liquid phase and the heavy liquid phase are mixed in a circulating way, and the countercurrent mixing is carried out, and the extraction effect is improved.
In still another embodiment provided by the invention, the device further comprises a dynamic differentiating component, wherein the dynamic differentiating component is communicated with the bottom end of the circulating extraction mechanism 5, the dynamic differentiating component is communicated with the circulating extraction mechanism 5, namely, the upper layer light liquid phase of the extraction tank 1 extracted by the circulating extraction mechanism 5 is injected into the dynamic differentiating component and then is conveyed to the bottom of the extraction tank 1 through the dynamic differentiating component, and the dynamic differentiating component is in transmission connection with the circulating extraction mechanism 5, and when the circulating extraction mechanism 5 circularly conveys the light liquid phase, namely, the dynamic differentiating component is driven synchronously to differentially and uniformly diffuse the light liquid phase in the extraction tank 1 so as to realize differential contact mass transfer of the light liquid phase and the heavy liquid phase. Here, the applicant needs to say that, because of the specific gravity difference between the light liquid phase and the heavy liquid phase, when the circulation extraction mechanism 5 extracts and conveys the light liquid phase in the upper layer of the extraction tank 1 to the bottom of the extraction tank 1 and performs mixed extraction with the heavy liquid phase through the light liquid phase floating up, the light liquid phase can be gathered and agglomerated, and finally the agglomerated light liquid phase floats up to the upper layer of the heavy liquid phase, the light liquid phase becomes the liquid mass floating up, the floating up speed is high, the contact area with the heavy liquid phase is small, the mass transfer effect between the light liquid phase and the heavy liquid phase is reduced, and the extraction effect is affected. The dynamic differential component is arranged at the bottom end of the circulating extraction mechanism 5, the upper layer light liquid phase of the extraction tank 1 extracted by the circulating extraction mechanism 5 is injected into the dynamic differential component, and the dynamic differential component is synchronously driven to differentially and uniformly diffuse the light liquid phase at the bottom of the extraction tank 1 so as to realize differential contact mass transfer of the light liquid phase and the heavy liquid phase, avoid converging the light liquid phase into liquid clusters, uniformly diffuse and float the light liquid phase into liquid drops in the extraction tank 1, reduce the floating speed of the liquid drops, improve the contact area with the heavy liquid, and perform rotary mixing in cooperation with the rotary component 3, so that the mass transfer effect between the light liquid phase and the heavy liquid phase is further enhanced, and the extraction efficiency is improved. And the dynamic differential component is in transmission connection with the circulating extraction mechanism 5, so that passive synchronous driving is realized, an external power source is not required, and the use is convenient.
In still another embodiment of the present invention, preferably, the dynamic differentiating component includes a disc-shaped casing structure with a cavity inside, the disc-shaped casing 53 is fixed at the bottom of the extraction tank 1, preferably, the diameter of the disc-shaped casing 53 is equal to the inner diameter of the extraction tank 1, the top of the disc-shaped casing 53 is communicated with the bottom of the central tube 51 through the interface seat 511, a plurality of strip-shaped openings 531 are uniformly formed on the surface of the disc-shaped casing 53, the plurality of strip-shaped openings 531 are radially formed on the surface of the disc-shaped casing 53, the differentiating rollers 61 are hermetically and rotatably provided with the differentiating rollers 61, the differentiating rollers 61 are uniformly provided with liquid outlet holes 62, the liquid outlet holes 62 are vertically and rotatably penetrated with the differentiating rollers 61, preferably, the liquid outlet holes 62 are opened at two ends to be in a flared state, the middle section is a through hole structure in a contracted state, the linkage mechanism is rotatably provided at the bottom of the disc-shaped casing 53, and the linkage mechanism is in transmission connection with each differentiating roller 61, the linkage mechanism includes a fluted disc 64 and a plurality of transmission gears 63, the fluted disc 64 is rotatably provided at the inner bottom of the disc-shaped casing 53, the fluted disc 64 is fixedly connected with the rotation shaft 52, the transmission gears 63 are fixedly arranged on the surfaces of the differentiating rollers 61, and the transmission gears 63 are meshed with the transmission gears 63. Specifically, the rotating shaft 52 drives the spiral vane 521 on the rotating shaft to rotate, thereby matching with the central pipe 51 to extract and convey the light liquid phase on the upper layer of the extraction tank 1 into the disk box 53, at this time, the rotating shaft 52 synchronously drives the fluted disc 64 to rotate, the fluted disc 64 matches with the plurality of transmission gears 63 to drive the plurality of differential rollers 61 to rotate, when the differential rollers 61 rotate to the liquid outlet holes 62 on the differential rollers to be in a vertical state, the light liquid phase in the disk box 53 automatically floats upwards through the liquid outlet holes 62 to overflow, when the differential rollers 61 rotate to the liquid outlet holes 62 on the differential rollers to be in a horizontal state, the liquid outlet holes 62 are in a blocking state, namely, intermittent differential liquid outlet is realized through continuous rotation of the differential rollers 61, so that the light liquid phase is uniformly dispersed in a liquid drop state at the bottom of the extraction tank 1, mass transfer effect between the light liquid phase and the heavy liquid phase is enhanced, extraction efficiency is improved, meanwhile, when the differential rollers 61 rotate to realize the differential uniform dispersion in a liquid drop state at the bottom of the extraction tank 1, the circulation direction of the liquid outlet holes 62 on the differential rollers realizes continuous switching, namely, two-direction intermittent switching liquid outlet is realized, namely, when the intermittent blocking state is realized, and the liquid outlet stability is remarkably improved.
In yet another embodiment provided by the present invention, it is preferable that the multi-stage refining mechanism 34 is further included, the multi-stage refining mechanism 34 is provided in the extraction tank 1, and the multi-stage refining mechanism 34 is configured such that, when the rotating assembly 3 rotates, the multi-stage refining mechanism 34 passively intercepts and refines the light liquid phase that is converged into a liquid mass state when rising in the heavy liquid phase into a liquid droplet state. Further, the dynamic differential component uniformly diffuses light liquid phase at the bottom of the extraction tank 1 to realize differential contact mass transfer of the light liquid phase and heavy liquid phase, when diffused light liquid phase drops float up in the heavy liquid phase, and the dynamic differential component is matched with the rotating component to rotate and mix, the light liquid phase drops in the heavy liquid phase are still caused to converge at the moment, thereby influencing the extraction effect, the multistage refining mechanism 34 comprises a plurality of circular net racks 341, the plurality of circular net racks 341 are sequentially and fixedly arranged at the outer side of the circulating extraction mechanism 5, each cross rack 32 on the rotating component 3 is mutually attached to the bottom of the circular net racks 341, namely when the diffused light liquid phase drops float up in the heavy liquid phase, the light liquid phase drops are adhered and trapped by the circular net racks 341, at the moment, the rotating component 3 rotates to drive the cross racks 32 to rotate and clean at the bottom of the circular net racks 341, so that the trapped and converged light liquid phase is scattered, refined and continuously float up in a liquid drop shape through the circular net racks 341 to extract, and the multistage refining treatment is realized by matching the plurality of circular net racks 341. Further improving the two-phase mass transfer effect and the extraction efficiency.
In another embodiment, since the rotating component 3 rotates, the light liquid phase moves upwards in the heavy liquid phase and gathers into a liquid mass towards the inner peripheral side of the extraction tank 1 under the action of centrifugal force, the multi-stage refining mechanism 34 comprises a circular table net rack 342, the circular table net rack 342 is in a circular table-shaped structure, a first annular frame 343 and a second annular frame 345 are respectively rotatably arranged on the inner side and the outer side of the bottom of the circular table net rack 342, a plurality of scraping frames 344 are connected between the first annular frame 343 and the second annular frame 345, the scraping frames 344 are attached to the bottom of the circular table net rack 342, and the outer side of the second annular frame 345 is connected with the L-shaped side frame 31 on the rotating component 3.
When scattered light liquid phase drops float upwards in a heavy liquid phase and gather into clusters, the scattered light liquid phase drops are adhered and trapped by the circular truncated cone net frame 342, at the moment, the rotating assembly 3 rotates to drive the second annular frame 345 to rotate through the L-shaped side frame 31, the second annular frame 345 is matched with the first annular frame 343 to drive the plurality of scraping frames 344 to rotate, the bottoms of the circular truncated cone net frames 342 are cleaned through the scraping frames 344, so that scattered light liquid phase trapped and concentrated into clusters continuously float upwards through the circular truncated cone net frame 342 to extract, meanwhile, the circular truncated cone net frame 342 forms a circular truncated cone, when the circular truncated cone net frame 342 is used for trapping light liquid phase clusters and cleaning and scattering the bottoms of the circular truncated cone net frames 342 through the scraping frames 344, the scattered light liquid phase drops are scattered and refined into the liquid drop upwards to extract under the buoyancy action, and meanwhile, the uniformity of the light liquid phase distribution refined into the liquid drop is evenly spread towards the center, and the extraction effect is remarkably enhanced.
An extraction method based on the solvent lithium circulating differential extraction equipment comprises the following steps: injecting a feed liquid and an extraction liquid of solvent lithium into an extraction tank 1, and driving a rotating assembly 3 to rotate through a driving mechanism 2 for mixed extraction; wherein the extracting solution is Kzu and 288 extractant (Kzu and the chemical components of the extractant are that phenylazo beta-naphthol and methyl tri-n-octyl ammonium chloride are configured according to the molar ratio of 2:1, and the extractant is diluted by solvents such as kerosene and the like according to the ratio of 3:1) and the light liquid phase floats upwards and is layered with the heavy liquid phase in the mixed extraction process, and at the moment, the rotating assembly 3 synchronously drives the circulating extraction mechanism 5 to circularly extract the upper light liquid phase of the extraction tank 1 to be injected into the bottom of the extraction tank 1 for circulating mixed extraction; the realization is circulated to carry out the convection mixing with light liquid phase and heavy liquid phase, improves extraction effect, and synchronous drive dynamic differential subassembly is with light liquid phase differential uniform diffusion in extraction jar 1 in order to realize light liquid phase and heavy liquid differential contact mass transfer extraction when the light liquid phase of extraction jar 1 upper strata is extracted to circulation extraction mechanism 5 circulation formula is poured into the bottom of extraction jar 1. The dynamic differential component is arranged at the bottom end of the circulating extraction mechanism 5, the upper layer light liquid phase of the extraction tank 1 extracted by the circulating extraction mechanism 5 is injected into the dynamic differential component, and the dynamic differential component is synchronously driven to differentially and uniformly diffuse the light liquid phase at the bottom of the extraction tank 1 so as to realize differential contact mass transfer of the light liquid phase and the heavy liquid phase, avoid converging the light liquid phase into liquid clusters, uniformly diffuse and float the light liquid phase into liquid drops in the extraction tank 1, reduce the floating speed of the liquid drops, improve the contact area with the heavy liquid, and further enhance the mass transfer effect between the light liquid phase and the heavy liquid phase by matching with the rotating component 3 for rotating and mixing.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.
Claims (10)
1. Solvent lithium circulation type differential extraction equipment comprises an extraction tank (1), wherein a rotating assembly (3) is rotationally arranged in the extraction tank (1), and the differential extraction equipment is characterized by further comprising:
the circulating extraction mechanism (5), circulating extraction mechanism (5) is fixed to be set up in extraction jar (1), and circulating extraction mechanism (5) with rotating assembly (3) transmission is connected, works as rotating assembly (3) rotate, synchronous drive circulating extraction mechanism (5) circulating extraction jar (1) upper light liquid phase pours into to the bottom of extraction jar (1).
2. The solvent lithium circulating type differential extraction equipment according to claim 1, further comprising a dynamic differential component, wherein the dynamic differential component is communicated with the bottom end of the circulating extraction mechanism (5), and is in transmission connection with the circulating extraction mechanism (5), and when the circulating extraction mechanism (5) circularly conveys a light liquid phase, the dynamic differential component is synchronously driven to differentially and uniformly diffuse the light liquid phase in the extraction tank (1) so as to realize differential contact mass transfer of the light liquid phase and a heavy liquid phase.
3. A solvent lithium circulating type differential extraction apparatus according to claim 1, characterized in that the top of the extraction tank (1) is provided with a driving mechanism (2), and the driving mechanism (2) is in transmission connection with the rotating assembly (3).
4. A solvent lithium circulating type differential extraction apparatus according to claim 3, characterized in that the driving mechanism (2) comprises a mounting frame (21), the mounting frame (21) is mounted at the top of the extraction tank (1), and a driving motor (22) is mounted on the mounting frame (21), and the driving motor (22) is in transmission connection with the rotating assembly (3) through a connecting shaft.
5. A solvent lithium circulating type differential extraction apparatus according to claim 3, wherein the rotating assembly (3) comprises a plurality of L-shaped side frames (31), the horizontal ends of the L-shaped side frames (31) are mutually fixed through connecting seats and connected with the driving mechanism (2), and a plurality of groups of transverse frames (32) are horizontally fixed on the inner sides of the L-shaped side frames (31).
6. The solvent lithium circulating type differential extraction apparatus according to claim 2, wherein the circulating extraction mechanism (5) comprises a central tube (51), the central tube (51) is vertically fixed inside the extraction tank (1), a rotating shaft (52) is rotatably arranged on the inner side of the central tube (51), a spiral blade (521) is fixed on the outer side of the rotating shaft (52), and the top end of the rotating shaft (52) is connected with the rotating assembly (3).
7. The solvent lithium circulating type differential extraction device according to claim 6, wherein the dynamic differential component comprises a disc box (53) and a linkage mechanism, the top of the disc box (53) is communicated with the bottom of the central tube (51) through an interface seat (511), a plurality of strip-shaped openings (531) are uniformly formed in the surface of the disc box (53), differential rollers (61) are arranged in the strip-shaped openings (531) in a sealing rotation mode, liquid outlet holes (62) are uniformly formed in the differential rollers (61), the linkage mechanism is rotatably arranged at the bottom of the disc box (53), and the linkage mechanism is in transmission connection with the differential rollers (61).
8. The solvent lithium circulating type differential extraction apparatus as claimed in claim 7, wherein the linkage mechanism comprises a fluted disc (64) and a plurality of transmission gears (63), the fluted disc (64) is rotatably arranged at the bottom of the inner side of the disc box (53), the top of the fluted disc (64) is connected with the rotating shaft (52), the transmission gears (63) are fixed at the end heads of the differential rollers (61), and the transmission gears (63) are meshed with the surface of the fluted disc (64).
9. A solvent lithium circulating type differential extraction apparatus according to claim 5, characterized by further comprising a multi-stage refining mechanism (34), the multi-stage refining mechanism (34) being provided in the extraction tank (1), and the multi-stage refining mechanism (34) being so equipped that, when the rotating assembly (3) rotates, the multi-stage refining mechanism (34) passively intercepts and refines a light liquid phase that converges into a liquid mass state when rising in a heavy liquid phase into a liquid droplet state.
10. An extraction process, characterized in that it is based on a solvent lithium circulating type differential extraction apparatus according to any one of the preceding claims 1-9, comprising the following steps:
injecting a feed liquid and an extract liquid of solvent lithium into the extraction tank (1), and performing rotary mixing extraction through a rotary component (3); wherein the extract is Kzu and Kzu288 extractant, and the chemical components of the extractant are: phenyl azo beta-naphthol and methyl tri-n-octyl ammonium chloride according to the weight ratio of 2:1, and diluting with kerosene solvent according to a ratio of 3:1 when in use;
in the mixed extraction process, the light liquid phase floats upwards and is layered with the heavy liquid phase, at the moment, the rotating assembly (3) synchronously drives the circulating extraction mechanism (5) to circularly extract the upper light liquid phase of the extraction tank (1) to be injected to the bottom of the extraction tank (1) for circulating mixed extraction;
the circulating extraction mechanism (5) is used for circularly extracting the light liquid phase at the upper layer of the extraction tank (1) to synchronously drive the dynamic differential component to uniformly disperse the light liquid phase in the extraction tank (1) when the light liquid phase at the upper layer of the extraction tank (1) is injected to the bottom of the extraction tank (1) so as to realize differential contact mass transfer extraction of the light liquid phase and the heavy liquid phase.
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