CN117920117B - Equipment is used in production of ternary precursor - Google Patents
Equipment is used in production of ternary precursor Download PDFInfo
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- CN117920117B CN117920117B CN202410341936.4A CN202410341936A CN117920117B CN 117920117 B CN117920117 B CN 117920117B CN 202410341936 A CN202410341936 A CN 202410341936A CN 117920117 B CN117920117 B CN 117920117B
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- 239000002243 precursor Substances 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 12
- 238000003756 stirring Methods 0.000 claims abstract description 242
- 239000000463 material Substances 0.000 claims abstract description 173
- 238000006243 chemical reaction Methods 0.000 claims abstract description 90
- 230000000903 blocking effect Effects 0.000 claims abstract description 71
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims abstract description 4
- 238000007789 sealing Methods 0.000 claims description 33
- 238000005485 electric heating Methods 0.000 claims description 26
- 239000011521 glass Substances 0.000 claims description 19
- 238000007599 discharging Methods 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 16
- 230000008569 process Effects 0.000 claims description 15
- 239000004065 semiconductor Substances 0.000 claims description 9
- 230000005540 biological transmission Effects 0.000 claims description 8
- 238000001914 filtration Methods 0.000 claims description 7
- 238000005086 pumping Methods 0.000 claims description 7
- 239000012141 concentrate Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 abstract description 8
- 238000000967 suction filtration Methods 0.000 abstract description 4
- 239000004744 fabric Substances 0.000 description 21
- 238000004140 cleaning Methods 0.000 description 13
- 230000000694 effects Effects 0.000 description 13
- 238000002156 mixing Methods 0.000 description 12
- 230000009471 action Effects 0.000 description 8
- 239000013078 crystal Substances 0.000 description 7
- 230000006911 nucleation Effects 0.000 description 7
- 238000010899 nucleation Methods 0.000 description 7
- 238000013329 compounding Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000010926 purge Methods 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 230000001360 synchronised effect Effects 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000008139 complexing agent Substances 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/18—Stationary reactors having moving elements inside
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
- B01F35/92—Heating or cooling systems for heating the outside of the receptacle, e.g. heated jackets or burners
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
- B01F35/93—Heating or cooling systems arranged inside the receptacle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
- B01J19/0066—Stirrers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/90—Heating or cooling systems
- B01F2035/99—Heating
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention discloses a device for producing ternary precursor, which comprises: a reaction kettle body; a stirring shaft; the two groups of first stirring plates are arranged on the stirring shaft, the first stirring plates are internally fixedly connected with a first installation shaft which is rotatably arranged on the stirring shaft, and the stirring shaft is provided with a first material blocking pipe fitting and a first material blocking shaft fitting which are used for supporting two sides of the first stirring plates; the two groups of second stirring plates are arranged on a stirring shaft at the upper side of the first stirring plate, a fixed ring piece is rotatably arranged on the stirring shaft, a second installation shaft which is rotatably arranged on the fixed ring piece is fixedly connected inwards to the second stirring plates, and a second material blocking pipe fitting and a second material blocking shaft piece which are used for supporting the two sides of the second stirring plate are arranged on the fixed ring piece; the rotation limiting mechanism comprises a strip-shaped through hole arranged on the fixed ring piece and a limiting block fixedly connected to the stirring shaft; and the concentration device is used for carrying out clear liquid suction filtration on the materials. The invention can effectively improve the production efficiency of the product and ensure the quality of the product.
Description
Technical Field
The invention relates to the technical field of ternary precursor production and processing, in particular to equipment for ternary precursor production.
Background
The existing production equipment of the ternary precursor mainly comprises a reaction kettle and a concentration device, and various materials are mixed and reacted in the reaction kettle to realize nucleation and crystal nucleus growth; and then the material in the reaction process is concentrated through the intervention of the concentration device, so that the material stops reacting after the solid content reaches the design requirement and the reaction granularity of the material reaches the granularity of the finished product, and the finished product is obtained by discharging, washing and drying.
At present, most of reaction kettles adopted by equipment for producing ternary precursors are conventional reaction kettles, and generally comprise a reaction kettle body, a stirring mechanism arranged in the reaction kettle body and a heat exchange jacket arranged on the outer side wall of the reaction kettle body. In the reaction production process, adding pure water into the reaction kettle in advance, and adding a certain amount of complexing agent and precipitant into the reaction kettle as base solution; then stirring and heating are started, and other raw materials are injected into the reaction kettle to begin nucleation; after the nucleus is manufactured, the oxidation atmosphere in the reaction kettle body is regulated, the stirring rotation speed is regulated, after the nucleus grows to be full of the kettle, the stirring rotation speed is regulated again, and the nucleus is circulated into the concentrating equipment for concentration. After nucleation and after the crystal nucleus grows to be full of the kettle, the stirring rotation speed needs to be adjusted and reduced respectively to prevent the problem of crystal nucleus stirring caused by stirring. Though the stirring speed is reduced, the stirring of crystal nucleus can be avoided to a certain extent, the mixing effect of materials is greatly reduced, and the reaction process is influenced; and the uneven temperature among materials is easy to occur due to uneven material mixing, namely, the temperature close to a heat exchange jacket (the side wall of the reaction kettle body) is higher than the temperature in the middle of the reaction kettle body, so that the quality of products in the same batch is uneven, and the method is very troublesome.
Therefore, the design can maintain the stirring and mixing effects on materials and can prevent the problem that crystal nuclei are crushed in a large amount due to stirring; the equipment for producing the ternary precursor can effectively maintain the uniformity of the reaction temperature, so that the production efficiency of the product is improved, and the quality of the product is ensured.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides equipment for producing a ternary precursor, which can effectively solve the technical problems in the prior art.
The technical scheme of the invention is as follows:
An apparatus for the production of a ternary precursor comprising:
The reaction kettle comprises a reaction kettle body, wherein a corresponding sealing cover is fixedly arranged at the top of the reaction kettle body, a feeding pipe is fixedly arranged on the sealing cover, and a corresponding discharging pipe is outwards connected to the bottom of the reaction kettle body;
the stirring shaft is rotatably arranged in the middle of the sealing cover, and the top of the stirring shaft is in transmission connection with the output shaft end of a driving motor arranged on the sealing cover;
The two groups of first stirring plates are arranged on the stirring shaft according to the height, the bottom sides of the first stirring plates are respectively and fixedly connected with a first installation shaft which is rotatably arranged on the stirring shaft, and the stirring shaft is respectively provided with a first material blocking pipe fitting for supporting one side of the first stirring plates and a first material blocking shaft piece for supporting the other side of the first stirring plates; the stirring shaft starts to rotate positively, and the upper side of the first stirring plate is supported by the first material blocking pipe piece, so that the first stirring plate is vertically arranged; the stirring shaft starts to rotate reversely, and the upper side of the first stirring plate is supported by the first material blocking shaft piece, so that the first stirring plate is arranged in an inclined plane shape;
The two groups of second stirring plates are respectively arranged on stirring shafts on the upper sides of the first stirring plates, corresponding fixed ring members are respectively and rotatably arranged on the stirring shafts on the upper sides of the first stirring plates, second installation shafts rotatably arranged on the fixed ring members are respectively and fixedly connected inwards on the bottom sides of the second stirring plates, and second material blocking pipe fittings for supporting one sides of the second stirring plates and second material blocking shaft members for supporting the other sides of the second stirring plates are respectively arranged on the fixed ring members; the stirring shaft starts to rotate positively, and the upper side of the second stirring plate is supported by the second material blocking pipe piece, so that the second stirring plate is vertically arranged; the stirring shaft starts to rotate reversely, and the upper side of the second stirring plate is supported by the second material blocking shaft piece, so that the second stirring plate is arranged in an inclined plane shape;
The rotation limiting mechanism comprises a strip-shaped through hole arranged on the fixed ring piece and a limiting block fixedly connected to the stirring shaft, and the limiting block is embedded in the strip-shaped through hole; the stirring shaft starts to rotate forward, the second stirring plate is stressed to drive the fixed ring piece to rotate anticlockwise around the stirring shaft, and the limiting block forms an abutting limit for the left end of the strip-shaped through hole, so that the second stirring plate and the first stirring plate are positioned on the same plane; the stirring shaft starts to rotate reversely, the second stirring plate is stressed to drive the fixed ring piece to rotate clockwise around the stirring shaft, and the limiting block forms an abutting limit for the right end of the strip-shaped through hole, so that the positions of the second stirring plate and the first stirring plate are staggered;
And the concentrating device is used for circularly pumping and discharging the materials at the bottom side of the reaction kettle body to the upper part of the reaction kettle body, and carrying out clear liquid suction filtration on the materials in the process of circulation pumping and discharging so as to concentrate the materials in the process of reaction.
The reaction kettle further comprises a heating mechanism, wherein the heating mechanism comprises a heat exchange jacket sleeved on the periphery of the reaction kettle body in a sandwich state and an electric heating element fixedly sleeved in the first material blocking pipe fitting; the bottom side of one end of the heat exchange jacket is outwards connected with a heat exchange medium inlet pipe, and the upper side of the other end of the heat exchange jacket is outwards connected with a heat exchange medium discharge pipe; when the stirring shaft starts to rotate positively, an external heat exchange medium circularly enters a heat exchange jacket to heat materials in the reaction kettle body; when the stirring shaft starts to rotate reversely, an external heat exchange medium circularly enters the heat exchange jacket, and the electric heating element is electrified to heat so as to heat materials in the reaction kettle body.
The electric heating element adopts an electric heating film glass tube, the electric heating film glass tube comprises a glass base tube fixedly sleeved in the first material blocking pipe fitting in a threaded mode, a corresponding semiconductor electric heating film is sprayed in the glass base tube, two sides of the semiconductor electric heating film are connected with electrodes, and the electrodes are respectively and electrically connected to an external electric controller through corresponding wires.
The middle part of the stirring shaft is provided with a wiring blind hole, the top of the stirring shaft is fixedly provided with a corresponding conductive slip ring, and the wire is electrically connected to an external electric controller through the wiring blind hole and the conductive slip ring.
The first material blocking pipe fitting is fixedly connected to the stirring shaft in a threaded connection mode, and the joint of the first material blocking pipe fitting and the stirring shaft is fixedly connected through a corresponding welding line.
The two ends of the strip-shaped through hole are respectively arranged in an inward inclined plane shape, and the two ends of the limiting block are respectively arranged in an inclined plane shape matched with the end part of the strip-shaped through hole.
The stirring shaft is in transmission connection with the output shaft end of the driving motor in a gear meshing transmission mode.
The reaction kettle body is supported and installed by corresponding supporting legs, and corresponding material inlet and outlet valves are respectively and fixedly installed on the material inlet pipe and the material outlet pipe.
The stirring shaft, the first stirring plate, the first mounting shaft, the first material blocking pipe fitting, the first material blocking shaft fitting, the second stirring plate, the fixing ring fitting, the second mounting shaft, the second material blocking pipe fitting, the second material blocking shaft fitting and the limiting block are all made of stainless steel.
The invention has the advantages that:
1) The angle-adjustable installation of the second stirring plate is realized on the upper side of the first stirring plate by the intervention of the fixed ring piece and the rotation limiting mechanism. Before nucleation, the stirring shaft starts to rotate forward, so that the second stirring plate moves to be positioned on the same plane with the first stirring plate under the thrust action of the materials, and at the moment, the first stirring plate and the second stirring plate are respectively arranged in a vertical mode under the thrust action of the materials, so that the stirring area of the materials is effectively increased, the stirring effect of the materials is ensured, the mixing efficiency of the materials is further ensured, and the reaction efficiency is improved; after nucleation, the stirring shaft is started to rotate reversely, so that the second stirring plate moves to be staggered with the first stirring plate under the thrust action of the materials, and the first stirring plate and the second stirring plate are respectively abutted to the first material blocking shaft part and the second material blocking shaft part in an inclined plane shape under the thrust action of the materials, so that the material mixing operation of the materials is realized in a material shoveling and material turning mode, and the stirring device can obviously reduce stirring force on the materials on the premise of keeping the material mixing uniformity to a great extent, so as to prevent the materials from being crushed in a large amount.
Therefore, the stirring and mixing effects on materials can be kept, and the problem that crystal nuclei are crushed in a large amount due to stirring can be prevented, so that the production reaction efficiency of products is ensured.
2) The positions of the second stirring plate and the first stirring plate are staggered under the reaction thrust of the materials, and the first stirring plate and the second stirring plate are respectively arranged in an inclined plane shape, so that the material mixing operation of the materials can be realized through a material shoveling and turning mode; but realize the compounding operation to the material through shovel material, stirring mode, still can reduce to a certain extent and be located the compounding effect between the material of reation kettle body middle part and periphery to the temperature that leads to being close to reation kettle body lateral wall can be higher relatively.
In order to solve the problem, the invention further carries out improved design on the heating mechanism, namely, an electric heating element fixedly sleeved in the first material blocking pipe fitting is additionally arranged on the basis of the original heat exchange jacket, and when the stirring shaft starts to rotate positively, namely, the material stirring effect is good, an external heat exchange medium circularly enters the heat exchange jacket so as to integrally heat the material in the reaction kettle body; when the stirring shaft is started to rotate reversely, external heat exchange medium is kept to circulate into the heat exchange jacket, and the electric heating element is controlled to be electrified to generate heat, in the process, materials can circulate through the first material blocking pipe piece under the inclined shoveling of the first stirring plate so as to form synchronous heating on the materials positioned in the middle of the reaction kettle body, and the reaction temperature of the materials positioned in the middle and the periphery of the reaction kettle body is controlled in a relatively uniform state so as to effectively keep the uniformity of the overall reaction temperature in the reaction kettle body, thereby ensuring the quality of products.
3) The electric heating element adopts the electric heating film glass tube, the semiconductor electric heating film of the electric heating element heats up after being electrified and can outwards form heat radiation, and the electric heating film glass tube which is arranged in a tubular shape can be directly and fixedly sleeved in the first material blocking tube part, so that the first material blocking tube part can be used as a supporting part or a heating part, the structural simplicity of equipment is improved, and the occupation of reaction space is reduced.
4) The two ends of the strip-shaped through hole are respectively arranged in an inward inclined plane shape, and the two ends of the limiting block are respectively arranged in an inclined plane shape matched with the end part of the strip-shaped through hole, so that the blocking thrust is decomposed into a transverse acting force and a pressing force towards the axis of the stirring shaft, and the structural stability of the limiting block in the using process is improved.
Drawings
Fig.1 is a schematic structural view of the present invention.
FIG. 2 is a schematic structural diagram of the reaction kettle of the present invention.
FIG. 3 is a cross-sectional view of the present invention when the stirring shaft is rotated in the forward direction.
Fig. 4 is a view showing the state of use of the first stirring plate and the second stirring plate when the stirring shaft rotates forward.
Fig. 5 is a cross-sectional view of the present invention when the stirring shaft is reversed.
Fig. 6 is a view showing the state of use of the first stirring plate and the second stirring plate when the stirring shaft is reversed.
Fig. 7 is a schematic structural diagram of an electrothermal film glass tube sleeved in a first material blocking pipe fitting.
Fig. 8 is a schematic structural view of an electrothermal film glass tube.
Fig. 9 is a schematic structural view of the concentrating device of the present invention.
Fig. 10 is a cross-sectional view of the concentrating device of the present invention.
FIG. 11 is an exploded view of the spiral feeder tube, filter cloth layer, and spiral stopper tube.
FIG. 12 is an assembled cross-sectional view of a spiral feeder tube, a cloth filter layer, and a spiral restrictor tube.
Fig. 13 is a schematic view of a structure in which an annular limiting member is provided at the bottom end of the spiral feeding tube.
Fig. 14 is a schematic view of the structure of the screw feeder tube tip portion with the fixed tube attached.
In the accompanying drawings: the reaction kettle body 1, the discharge pipe 101, the sealing cover 2, the feed pipe 201, the stirring shaft 3, the wiring blind hole 301, the driving motor 4, the first stirring plate 5, the first mounting shaft 6, the first material blocking pipe 7, the first material blocking shaft 8, the second stirring plate 9, the fixed ring 10, the second mounting shaft 11, the second material blocking pipe 12, the second material blocking shaft 13, the rotation limiting mechanism 14, the elongated through hole 1401, the limiting block 1402, the heat exchange jacket 1501, the electric heating element 1502, the glass base pipe 15021, the semiconductor electric heating film 15022, the electrode 15023, the heat exchange medium inlet pipe 16, the heat exchange medium outlet pipe 17, the conducting wire 18, the conductive slip ring 19, the supporting legs 20, the feeding and discharging valve 21, the circulating discharge pipe 22, the first material collecting container 23, the circulating feed pipe 24, the second material collecting container 25, the driving cylinder 26, the upper sealing plate 2601, the lower sealing plate 2602, the spiral feed pipe 27, the water permeable hole 2701, the cleaning mechanism 28, the cleaning pipe 2801, the cleaning driving motor 2802, the filtering mechanism 29, the spiral limiting pipe 1, the filtering hole 11, the filter layer 2, the filter cloth 30033, the sealing support frame 29032, the heat exchange medium inlet pipe 37, the sealing support frame 29031, the heat exchange medium inlet pipe 37, the sealing support frame 29032, the filter medium outlet pipe frame 29032, the sealing support frame 37, and the sealing support frame 37.
Detailed Description
For the convenience of understanding by those skilled in the art, the structure of the present invention will now be described in further detail with reference to the accompanying drawings:
Referring to fig. 1-8, an apparatus for producing a ternary precursor, comprising:
the reaction kettle comprises a reaction kettle body 1, wherein a corresponding sealing cover 2 is fixedly arranged at the top of the reaction kettle body 1, a feeding pipe 201 is fixedly arranged on the sealing cover 2, and a corresponding discharging pipe 101 is outwards connected with the bottom of the reaction kettle body 1;
the stirring shaft 3 is rotatably arranged in the middle of the sealing cover 2, and the top of the stirring shaft 3 is in transmission connection with the output shaft end of the driving motor 4 arranged on the sealing cover 2;
The two groups of first stirring plates 5 are arranged on the stirring shaft 3 according to the height, the bottom sides of the first stirring plates 5 are respectively and fixedly connected with a first installation shaft 6 which is rotatably arranged on the stirring shaft 3, and the stirring shaft 3 is respectively provided with a first material blocking pipe piece 7 which is used for supporting one side of the first stirring plates 5 and a first material blocking shaft piece 8 which is used for supporting the other side of the first stirring plates 5; the stirring shaft 3 starts to rotate positively, and the upper side of the first stirring plate 5 is supported by the first material blocking pipe piece 7, so that the first stirring plate 5 is vertically arranged; the stirring shaft 3 starts to rotate reversely, and the upper side of the first stirring plate 5 is supported by the first material blocking shaft piece 8, so that the first stirring plate 5 is arranged in an inclined plane shape;
The two groups of second stirring plates 9 are respectively arranged on stirring shafts 3 on the upper sides of the first stirring plates 5, the stirring shafts 3 on the upper sides of the first stirring plates 5 are respectively and rotatably provided with corresponding fixed ring members 10, the bottom sides of the second stirring plates 9 are respectively and inwards fixedly connected with second mounting shafts 11 rotatably arranged on the fixed ring members 10, and the fixed ring members 10 are respectively provided with second material blocking pipe members 12 for supporting one sides of the second stirring plates 9 and second material blocking shaft members 13 for supporting the other sides of the second stirring plates 9; the stirring shaft 3 starts to rotate positively, and the upper side of the second stirring plate 9 is supported by the second material blocking pipe fitting 12, so that the second stirring plate 9 is vertically arranged; the stirring shaft 3 starts to rotate reversely, and the upper side of the second stirring plate 9 is supported by the second material blocking shaft piece 13, so that the second stirring plate 9 is arranged in an inclined plane shape;
The rotation limiting mechanism 14 comprises a strip-shaped through hole 1401 arranged on the fixed ring member 10 and a limiting block 1402 fixedly connected to the stirring shaft 3, wherein the limiting block 1402 is embedded in the strip-shaped through hole 1401; the stirring shaft 3 starts to rotate forward, the second stirring plate 9 is forced to drive the fixed ring member 10 to rotate anticlockwise around the stirring shaft 3, and the limiting block 1402 forms an abutting limit for the left end of the strip-shaped through hole 1401, so that the second stirring plate 9 and the first stirring plate 5 are located on the same plane; the stirring shaft 3 starts to rotate reversely, the second stirring plate 9 is forced to drive the fixed ring member 10 to rotate clockwise around the stirring shaft 3, and the limiting block 1402 forms an abutting limit for the right end of the strip-shaped through hole 1401, so that the positions of the second stirring plate 9 and the first stirring plate 5 are staggered;
the concentrating device is used for circularly pumping and discharging the materials at the bottom side of the reaction kettle body 1 to the upper part of the reaction kettle body 1, and carrying out clear liquid suction filtration on the materials in the circulating pumping and discharging process so as to concentrate the materials in the reaction process.
The invention is provided with the first stirring plate 5 which is arranged on the stirring shaft 3 in an angle adjustable way, and the angle adjustable installation of the second stirring plate 9 is realized on the upper side of the first stirring plate 5 through the intervention of the fixed ring member 10 and the rotation limiting mechanism 14. Before nucleation, the stirring shaft 3 starts to rotate forward, so that the second stirring plate 9 moves to be positioned on the same plane with the first stirring plate 5 under the thrust action of the materials, and at the moment, the first stirring plate 5 and the second stirring plate 9 are respectively arranged in a vertical mode under the thrust action of the materials, so that the stirring area of the materials is effectively increased, the stirring effect of the materials is ensured, the mixing efficiency of the materials is further ensured, and the reaction efficiency is improved; after nucleation, the stirring shaft 3 starts to rotate reversely, so that the second stirring plate 9 moves to be staggered with the first stirring plate 5 under the thrust action of the materials, the first stirring plate 5 and the second stirring plate 9 are respectively abutted to the first material blocking shaft part 8 and the second material blocking shaft part 13 in an inclined plane shape under the thrust action of the materials, and the material mixing operation of the materials is realized in a material shoveling and material turning mode. Therefore, the stirring and mixing effects on materials can be kept, and the problem that crystal nuclei are crushed in a large amount due to stirring can be prevented, so that the production reaction efficiency of products is ensured.
The reaction kettle further comprises a heating mechanism, wherein the heating mechanism comprises a heat exchange jacket 1501 sleeved on the periphery of the reaction kettle body 1 in a sandwich state and an electric heating element 1502 fixedly sleeved in the first material blocking pipe piece 7; a heat exchange medium inlet pipe 16 is outwards connected to the bottom side of one end of the heat exchange jacket 1501, and a heat exchange medium outlet pipe 17 is outwards connected to the upper side of the other end of the heat exchange jacket 1501; when the stirring shaft 3 starts to rotate positively, an external heat exchange medium circularly enters the heat exchange jacket 1501 so as to heat the materials in the reaction kettle body 1; when the stirring shaft 3 starts to rotate reversely, an external heat exchange medium is circulated into the heat exchange jacket 1501, and the electric heating element 1502 is electrified to heat so as to heat the materials in the reaction kettle body 1.
The electric heating element 1502 adopts an electrothermal film glass tube, the electrothermal film glass tube comprises a glass base tube 15021 fixedly sleeved in the first material blocking tube piece 7 in a threaded connection mode, a corresponding semiconductor electrothermal film 15022 is sprayed in the glass base tube 15021, two sides of the semiconductor electrothermal film 15022 are connected with electrodes 15023, and the electrodes 15023 are respectively and electrically connected to an external electric controller through corresponding leads 18.
The middle part of the stirring shaft 3 is provided with a wiring blind hole 301, the top of the stirring shaft 3 is fixedly provided with a corresponding conductive slip ring 19, and the wire 18 is electrically connected to an external electric controller through the conductive slip ring 19 via the wiring blind hole 301.
The first material blocking pipe fitting 7 is fixedly connected to the stirring shaft 3 in a threaded connection mode, and the joint of the first material blocking pipe fitting 7 and the stirring shaft 3 is fixedly connected through a corresponding welding seam.
The positions of the second stirring plate 9 and the first stirring plate 5 are staggered under the reaction thrust of the materials, and the first stirring plate 5 and the second stirring plate 9 are respectively arranged in an inclined plane shape, so that the material mixing operation of the materials can be realized through a material shoveling and turning mode; but realize the compounding operation to the material through shovel material, stirring mode, still can reduce to a certain extent and be located the compounding effect between the material of reaction kettle body 1 middle part and periphery to the temperature that leads to being close to reaction kettle body 1 lateral wall can be higher relatively.
In order to solve the problem, the invention further improves the design of the heating mechanism, namely, on the basis of the original heat exchange jacket 1501, an electric heating element 1502 fixedly sleeved in a first material blocking pipe piece 7 is additionally arranged, when the stirring shaft 3 starts to rotate positively, namely, when the material stirring effect is good, an external heat exchange medium is circulated into the heat exchange jacket 1501 so as to integrally heat the materials in the reaction kettle body 1; when the stirring shaft 3 starts to rotate reversely, external heat exchange medium is kept to circulate into the heat exchange jacket 1501, and the electric heating element 1502 is controlled to be electrified to generate heat, in the process, materials can circulate through the first material blocking pipe piece 7 under the inclined shoveling of the first stirring plate 5 so as to form synchronous heating on the materials positioned in the middle of the reaction kettle body 1, thereby controlling the reaction temperature of the materials in the middle and the periphery of the reaction kettle body 1 in a relatively uniform state, and effectively keeping the uniformity of the overall reaction temperature in the reaction kettle body 1, so that the quality of products is ensured.
The electric heating element 1502 adopts the electrothermal film glass tube, the semiconductor electrothermal film 15022 of the electric heating element heats up after being electrified, and heat radiation can be outwards formed, and mainly, the electrothermal film glass tube which is arranged in a tubular shape can be directly and fixedly sleeved in the first material blocking tube piece 7, so that the first material blocking tube piece 7 can be used as a supporting part or a heating part, and the structural simplicity of equipment is improved, and the occupation of reaction space is reduced.
The two ends of the elongated through hole 1401 are respectively provided with an inward inclined plane, and the two ends of the limiting block 1402 are respectively provided with an inclined plane adapted to the end of the elongated through hole 1401. Therefore, the blocking thrust is decomposed into a transverse acting force and a pressing force towards the axis of the stirring shaft 3, so that the structural stability of the limiting block 1402 in the using process is improved.
The stirring shaft 3 is in transmission connection with the output shaft end of the driving motor 4 through a gear engagement transmission mode. The reaction kettle body 1 is supported and installed by corresponding support legs 20, and corresponding material inlet and outlet valves 21 are respectively and fixedly installed on the material inlet pipe 201 and the material outlet pipe 101.
The stirring shaft 3, the first stirring plate 5, the first mounting shaft 6, the first material blocking pipe fitting 7, the first material blocking shaft fitting 8, the second stirring plate 9, the fixed ring fitting 10, the second mounting shaft 11, the second material blocking pipe fitting 12, the second material blocking shaft fitting 13 and the limiting block 1402 are all made of stainless steel.
Referring to fig. 1, 9-14, the concentrating device of the present invention comprises:
A circulating discharge pipe 22 connected to the lower side of the corresponding reaction kettle body 1, wherein one end of the circulating discharge pipe 22, which is not connected to the reaction kettle body 1, is connected with a first collecting container 23;
A circulation feed pipe 24 connected to the upper side of the reaction kettle body 1, and a second material collecting container 25 is connected to one end of the circulation feed pipe 22, which is not connected to the reaction kettle body 1;
The driving cylinder 26 is installed between the first collecting container 23 and the second collecting container 25 in a sealing and rotating manner, the end parts of the driving cylinder 26 respectively extend into the first collecting container 23 and the second collecting container 25 and are fixedly connected with a corresponding upper sealing plate 2601 and a corresponding lower sealing plate 2602 in a sealing manner, the inner side wall of the driving cylinder 26 is fixedly connected with a corresponding spiral feeding pipe 27, the upper end parts and the lower end parts of the spiral feeding pipe 27 respectively penetrate through the outer sides of the upper sealing plate 2601 and the lower sealing plate 2602 in a sealing manner, and a plurality of corresponding water permeable holes 2701 are uniformly distributed on the spiral feeding pipe 27;
The discharging and cleaning mechanism 28 comprises a discharging and cleaning pipe 2801 communicated and fixedly connected to the middle part of the lower sealing plate 2602, wherein the bottom of the discharging and cleaning pipe 2801 is hermetically and rotatably arranged on the bottom side of the first collecting container 23 and is in transmission connection with the output shaft end of a discharging and cleaning driving motor 2802 arranged on the lower side of the first collecting container 23;
the filtering mechanism 29 comprises a spiral limiting pipe 2901 which is spirally sleeved in the spiral feeding pipe 27 in a spaced state, the spiral limiting pipe 2901 is provided with a plurality of corresponding filtering holes 29011 in a grid shape, and a filter cloth layer 2902 which is spirally arranged is clamped between the spiral limiting pipe 2901 and the spiral feeding pipe 27;
the limiting mechanism comprises an annular limiting piece 3001 fixedly connected to the bottom end part of the spiral conveying pipe 27 and a fixing pipe fitting 3002 detachably installed on the top end part of the spiral conveying pipe 27, the filter cloth layer 2902 is sleeved on the spiral limiting pipe 2901, the bottom end part of the filter cloth layer 2902 is folded and fixed on the bottom end part of the spiral limiting pipe 2901, the spiral limiting pipe 2901 sleeved with the filter cloth layer 2901 is spirally inserted into the bottom end part of the filter cloth layer 2902 in a screwing mode to be fixedly abutted to the annular limiting piece 3001, the upper end part of the spiral limiting pipe 2902 sleeved with the filter cloth layer 2902 extends to the outer side of the spiral conveying pipe 27, and a clamping convex edge 30021 clamped at the upper end part of the spiral limiting pipe 2901 is integrally formed at the outer end part of the fixing pipe fitting 3002;
The vacuumizing mechanism comprises a vacuumizing tube 31 which is installed on the upper sealing plate 2601 in a sealing and rotating mode, and the vacuumizing tube 31 is connected to an external vacuumizing pump through a corresponding connecting tube.
The spiral feeding pipe 27 is spirally wound and fixedly connected on the inner side wall of the driving cylinder 26 in a anticlockwise upward direction, and the driving cylinder 26 is driven by the clearing driving motor 2802 to rotate clockwise.
The first material collecting container 23 and the second material collecting container 25 are arranged through the intervention of the circulating discharging pipe 22 and the circulating feeding pipe 24, and then a driving cylinder 26 is rotatably arranged between the first material collecting container 23 and the second material collecting container 25; and the spiral feeding pipe 27 is installed in the driving cylinder 26, and the filter cloth layer 2902 is sandwiched between the spiral feeding pipe 27 and the spiral limiting pipe 2901 on the premise of setting the spiral limiting pipe 2901. In this way, the cleaning tube 2801 is driven to rotate by the cleaning driving motor 2802, so that the spiral feeding tube 27 can be driven to rotate, so that the material in the second material collecting container 25 is circularly lifted into the first material collecting container 23 in a spiral feeding manner, and then circularly enters the reaction kettle body 1. In the process, the external vacuumizing pump is started to vacuumize, so that the whole spiral conveying pipe 27 is in a vacuumizing state, the materials in the concentration process are effectively circularly conveyed, and the materials in the conveying process can be integrally and comprehensively subjected to suction filtration, so that the concentration effect on the materials is ensured.
In the assembly process of the filtering mechanism 29, the filter cloth layer 2901 may be sleeved on the spiral limiting tube 2901, the bottom end portion of the filter cloth layer 2902 is folded and fixed on the bottom end portion of the spiral limiting tube 2901, the spiral limiting tube 2901 sleeved with the filter cloth layer 2902 is spirally inserted on the bottom end portion of the filter cloth layer 2902 in a screwing manner to be fixedly abutted on the annular limiting member 3001, and the upper end portion of the spiral limiting tube 2901 sleeved with the filter cloth layer 2902 is fixedly limited by the fixing tube 3002 provided with the clamping protruding edge 30021, so that the assembly stability of the filtering mechanism 29 can be ensured, and the practical effect of the invention is ensured.
The cleaning drive motor 2802 is an adjustable speed motor, the fixed pipe 3002 is detached, the spiral limiting pipe 2901 sleeved with the filter cloth layer 2902 is fixed in an anti-rotation manner, and then the cleaning drive motor 2802 is started to rotate at a low speed, so that the spiral limiting pipe 2901 sleeved with the filter cloth layer 2902 can be pushed to the outside of the spiral feeding pipe 27.
The upper portion of first collection material container 23 is the open-ended setting, the opening part is through bolt locking mode demountable installation has a corresponding lid 32, the middle part of lid 32 is provided with and is used for running through the through-hole of evacuation tube 31, the fixation clamp is equipped with corresponding sealing gasket 33 between lid 32 and the first collection material container 23, the through-hole department rigid coupling of lid 32 has a butt to sealing washer 34 on the lateral wall of evacuation tube 31.
When the filter cloth layer 2902 needs to be cleaned or replaced, the connecting pipe connected with the external vacuumizing pump is detached, then the cover 32 arranged on the upper part of the first collecting container 23 is detached, and the fixed pipe 3002 is detached. After the fixed pipe fitting 3002 is detached, the spiral limiting pipe 2901 sleeved with the filter cloth layer 2902 is fixed in an anti-rotation mode by means of a tool, then the cleaning driving motor 2802 is started to rotate at a low speed, the spiral limiting pipe 2901 sleeved with the filter cloth layer 2902 can be pushed to the outside of the spiral conveying pipe 27, and therefore the cleaning and replacement operation difficulty of the filter cloth layer 2902 is greatly reduced, and the use convenience of equipment is greatly improved.
In the process of circularly conveying the materials in a spiral feeding mode, the conveying speed of the materials is relatively high, so that the materials in the reaction process can be circularly separated from the reaction kettle body 1 in a shorter time interval, and the reaction process of the materials is influenced. For this purpose, a heating sleeve 35 is further connected between the first collecting container 23 and the second collecting container 25 in a sealing manner, and is fixedly sleeved outside the driving cylinder 26, the upper portion of the heating sleeve 35 is connected to the heat exchange medium discharge pipe 17, and a corresponding heat exchange medium discharge pipe 36 is connected to the lower portion of the heating sleeve 35.
In the use process, the heat exchange medium in the heat exchange jacket 1501 of the reaction kettle body 1 is continuously conducted to the heating sleeve 35 and then output. Therefore, materials in the concentration process can be effectively insulated, and adverse effects on the reaction process caused by the improvement of the concentration efficiency are prevented.
The fixing pipe 3002 is detachably mounted to the top end portion of the screw feed pipe 27 by screw connection.
The circulating discharging pipe 22 and the circulating feeding pipe 24 are fixedly connected with corresponding feeding and discharging valves 37 respectively.
The first collecting container 23 and the second collecting container 25 are fixedly connected to the reaction kettle body 1 through corresponding brackets 38 respectively.
The bottom of the purge pipe 2801 is drivingly connected to the output shaft end of the purge driving motor 2802 by gear engagement.
The outer end of the screw feed tube 27 is fixedly welded to the inner side wall of the drive cylinder 26.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (9)
1. An apparatus for producing a ternary precursor, comprising:
The reaction kettle comprises a reaction kettle body (1), wherein a corresponding sealing cover (2) is fixedly arranged at the top of the reaction kettle body (1), a feeding pipe (201) is fixedly arranged on the sealing cover (2), and a corresponding discharging pipe (101) is outwards connected with the bottom of the reaction kettle body (1);
the stirring shaft (3) is rotatably arranged in the middle of the sealing cover (2), and the top of the stirring shaft (3) is connected with the output shaft end of a driving motor (4) arranged on the sealing cover (2) in a transmission way;
The two groups of first stirring plates (5) are arranged on the stirring shaft (3) according to the height, the bottom sides of the first stirring plates (5) are respectively and inwards fixedly connected with first mounting shafts (6) rotatably arranged on the stirring shaft (3), and the stirring shafts (3) are respectively provided with first material blocking pipe pieces (7) used for supporting one sides of the first stirring plates (5) and first material blocking shaft pieces (8) used for supporting the other sides of the first stirring plates (5); the stirring shaft (3) starts to rotate positively, and the upper side of the first stirring plate (5) is supported by the first material blocking pipe piece (7) so that the first stirring plate (5) is vertically arranged; the stirring shaft (3) starts to rotate reversely, and the upper side of the first stirring plate (5) is supported by the first material blocking shaft piece (8) so that the first stirring plate (5) is arranged in an inclined plane shape;
Two groups of second stirring plates (9) are respectively arranged on stirring shafts (3) on the upper sides of the first stirring plates (5), corresponding fixed ring members (10) are respectively and rotatably arranged on the stirring shafts (3) on the upper sides of the first stirring plates (5), second mounting shafts (11) rotatably arranged on the fixed ring members (10) are respectively and fixedly connected inwards on the bottom sides of the second stirring plates (9), and second material blocking pipe members (12) for supporting one sides of the second stirring plates (9) and second material blocking shaft members (13) for supporting the other sides of the second stirring plates (9) are respectively arranged on the fixed ring members (10); the stirring shaft (3) starts to rotate positively, and the upper side of the second stirring plate (9) is supported by the second material blocking pipe fitting (12) so that the second stirring plate (9) is vertically arranged; the stirring shaft (3) starts to rotate reversely, and the upper side of the second stirring plate (9) is supported by the second material blocking shaft piece (13) so that the second stirring plate (9) is arranged in an inclined plane shape;
The rotation limiting mechanism (14) comprises a strip-shaped through hole (1401) arranged on the fixed ring member (10) and a limiting block (1402) fixedly connected to the stirring shaft (3), and the limiting block (1402) is embedded in the strip-shaped through hole (1401); the stirring shaft (3) starts to rotate positively, the second stirring plate (9) is stressed to drive the fixed ring piece (10) to rotate anticlockwise around the stirring shaft (3), and the limiting block (1402) forms an abutting limit for the left end of the strip-shaped through hole (1401) so that the second stirring plate (9) and the first stirring plate (5) are positioned on the same plane; the stirring shaft (3) starts to rotate reversely, the second stirring plate (9) is stressed to drive the fixed ring piece (10) to rotate clockwise around the stirring shaft (3), and the limiting block (1402) forms an abutting limit for the right end of the strip-shaped through hole (1401), so that the positions of the second stirring plate (9) and the first stirring plate (5) are staggered;
The concentrating device is used for circularly pumping and discharging the materials at the bottom side of the reaction kettle body (1) to the upper part of the reaction kettle body (1), and carrying out clear liquid pumping filtration on the materials in the circulating pumping and discharging process so as to concentrate the materials in the reaction process.
2. The equipment for producing the ternary precursor according to claim 1, wherein the reaction kettle further comprises a heating mechanism, the heating mechanism comprises a heat exchange jacket (1501) sleeved on the periphery of the reaction kettle body (1) in a sandwich state, and an electric heating element (1502) fixedly sleeved in the first material blocking pipe piece (7); a heat exchange medium inlet pipe (16) is outwards connected to the bottom side of one end of the heat exchange jacket (1501), and a heat exchange medium discharge pipe (17) is outwards connected to the upper side of the other end of the heat exchange jacket (1501); when the stirring shaft (3) starts to rotate positively, an external heat exchange medium circularly enters a heat exchange jacket (1501) to heat materials in the reaction kettle body (1); when the stirring shaft (3) starts to rotate reversely, an external heat exchange medium circularly enters the heat exchange jacket (1501), and the electric heating element (1502) is electrified to heat so as to heat materials in the reaction kettle body (1).
3. The apparatus for producing ternary precursor according to claim 2, wherein the electric heating element (1502) is an electrothermal film glass tube, the electrothermal film glass tube comprises a glass base tube (15021) fixedly sleeved in the first material blocking tube piece (7) in a threaded connection manner, a corresponding semiconductor electrothermal film (15022) is sprayed in the glass base tube (15021), two sides of the semiconductor electrothermal film (15022) are connected with electrodes (15023), and the electrodes (15023) are respectively electrically connected to an external electric controller through corresponding leads (18).
4. A device for producing ternary precursors according to claim 3, characterized in that the middle part of the stirring shaft (3) is provided with a wiring blind hole (301), and the top of the stirring shaft (3) is fixedly provided with a corresponding conductive slip ring (19), and the wire (18) is electrically connected to an external electric controller through the wiring blind hole (301) and the conductive slip ring (19).
5. The device for producing ternary precursor according to claim 4, wherein the first material blocking pipe (7) is fixedly connected to the stirring shaft (3) in a threaded manner, and the joint of the first material blocking pipe (7) and the stirring shaft (3) is fixedly connected through a corresponding welding seam.
6. The apparatus for producing ternary precursor according to claim 1, wherein two ends of the elongated through hole (1401) are respectively provided with inward inclined planes, and two ends of the limiting block (1402) are respectively provided with inclined planes adapted to the ends of the elongated through hole (1401).
7. A ternary precursor production apparatus according to claim 1 wherein the stirring shaft (3) is drivingly connected to the output shaft end of the drive motor (4) by means of a gear engagement drive.
8. The equipment for producing the ternary precursor according to claim 1, wherein the reaction kettle body (1) is supported and installed by corresponding supporting legs (20), and corresponding material inlet and outlet valves (21) are respectively fixedly installed on the material inlet pipe (201) and the material outlet pipe (101).
9. The device for producing the ternary precursor according to claim 1, wherein the stirring shaft (3), the first stirring plate (5), the first mounting shaft (6), the first material blocking pipe (7), the first material blocking shaft (8), the second stirring plate (9), the fixing ring (10), the second mounting shaft (11), the second material blocking pipe (12), the second material blocking shaft (13) and the limiting block (1402) are all made of stainless steel.
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| CN115318228A (en) * | 2022-08-18 | 2022-11-11 | 美亚药业海安有限公司 | Reation kettle of uridylic acid disodium preparation with PH regulation and control system |
| CN219596325U (en) * | 2023-02-24 | 2023-08-29 | 常州米克森搅拌设备有限公司 | Central stirring mechanism |
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| JP5832427B2 (en) * | 2010-05-21 | 2015-12-16 | 株式会社クレハ | Vertical solid-liquid countercurrent contact method, solid particle washing method, polyarylene sulfide production method, and apparatus |
| CN208373074U (en) * | 2018-04-24 | 2019-01-15 | 辽宁鸿昊化学工业股份有限公司 | A kind of neutralization reaction kettle |
| JP2020049405A (en) * | 2018-09-25 | 2020-04-02 | 住友金属鉱山株式会社 | Fluid supply nozzle, reaction device and particle manufacturing method |
| CN112844238A (en) * | 2020-12-29 | 2021-05-28 | 烟台联利化工有限公司 | Preparation equipment and process of triethyl aluminum trichloride |
| CN114768721B (en) * | 2022-04-08 | 2024-06-14 | 宁夏中色新材料有限公司 | Device and method for preparing lithium battery positive electrode material precursors with various particle sizes |
| CN115518599A (en) * | 2022-09-23 | 2022-12-27 | 上海蕙黔新材料科技有限公司 | Dechlorination reactor for synthesizing dimethyl carbonate by gas-phase method carbonyl |
| CN115591512B (en) * | 2022-12-15 | 2023-07-07 | 联仕(昆山)化学材料有限公司 | Mixing device in nitrogen methyl pyrrolidone preparation process |
| CN116920774B (en) * | 2023-09-19 | 2023-12-19 | 福建德尔科技股份有限公司 | On-line monitoring's photoresist reation kettle |
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| CN115318228A (en) * | 2022-08-18 | 2022-11-11 | 美亚药业海安有限公司 | Reation kettle of uridylic acid disodium preparation with PH regulation and control system |
| CN219596325U (en) * | 2023-02-24 | 2023-08-29 | 常州米克森搅拌设备有限公司 | Central stirring mechanism |
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