CN218689384U - Quantum dot synthesis and separation device - Google Patents
Quantum dot synthesis and separation device Download PDFInfo
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- CN218689384U CN218689384U CN202222281721.7U CN202222281721U CN218689384U CN 218689384 U CN218689384 U CN 218689384U CN 202222281721 U CN202222281721 U CN 202222281721U CN 218689384 U CN218689384 U CN 218689384U
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Abstract
The utility model discloses a quantum dot is synthetic and separator, the nucleation reation kettle top and the nucleation liquid storage pot intercommunication of nucleation mechanism, the nucleation liquid storage pot is through first condenser pipe and vacuum pump intercommunication, nucleation reation kettle's first discharge gate with by the heat exchanger intercommunication between the cladding reation kettle of cladding mechanism, cladding reation kettle's second discharge gate with separating mechanism's centrifuge intercommunication, centrifuge and separation liquid storage pot intercommunication, cladding reation kettle top and cladding liquid storage pot intercommunication, nucleation reation kettle highly be higher than cladding reation kettle's height. The utility model adopts the above structure a quantum dot is synthetic and separator, fast nucleation in nucleation reation kettle, and quick cooling enters into cladding reation kettle and wraps the shell reaction after the heat exchanger cooling, and solution after the reaction directly gets into carries out purification treatment in the centrifuge, reduces the loss that appears when the manpower shifts when saving installation space.
Description
Technical Field
The utility model relates to a quantum dot synthesis and separation technical field especially relate to a quantum dot synthesis and separator.
Background
The quantum dot is a stable nano luminescent material which is composed of II-VI group elements and III-V group elements, has the nano size of 2-100nm, and can receive exciting light to generate fluorescence. The quantum dots have obvious quantum effects and can be widely applied to the industries of display, illumination, biomedicine and the like.
The quantum dots are generally coated by high-temperature nucleation and low-temperature shell layers during preparation, so that for laboratory-level experiments, the shell coating reaction can be realized after the rapid cooling, and the particle uniformity of the quantum dots is directly influenced by the cooling speed. However, for industrial mass production, rapid cooling is difficult to achieve, thereby affecting product quality. And traditional quantum dot is when synthesizing, and synthesis and splitter separately place, and whole production line leads to area big because the dispersion is placed, and need to transfer synthetic quantum dot solution to centrifuge artificially and carry out purification processing, and the operation is complicated.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a quantum dot is synthetic and separator solves the rapid cooling problem among the quantum dot industrial production process.
In order to realize the above purpose, the utility model provides a synthetic and separator of quantum dot, including nucleation mechanism, cladding mechanism and the separating mechanism who communicates in proper order, the nucleation reation kettle top and the nucleation liquid storage pot intercommunication of nucleation mechanism, the nucleation liquid storage pot is through first condenser pipe and vacuum pump intercommunication, nucleation reation kettle's first discharge gate with by the heat exchanger intercommunication between the cladding reation kettle of cladding mechanism, cladding reation kettle's second discharge gate with separating mechanism's centrifuge intercommunication, centrifuge and separation liquid storage pot intercommunication, cladding reation kettle top and cladding liquid storage pot intercommunication, nucleation reation kettle highly be higher than cladding reation kettle's height.
Preferably, the nucleation reaction kettle and the cladding reaction kettle are respectively provided with a stirring assembly, a low-pressure nitrogen gas inlet, an exhaust port and a temperature control assembly, a motor of the stirring assembly is connected with a stirring blade through a transmission shaft, the stirring blade is respectively positioned in the centers of the nucleation reaction kettle and the cladding reaction kettle, a heating sleeve of the temperature control assembly is respectively sleeved outside the nucleation reaction kettle and the cladding reaction kettle, and a temperature sensor of the temperature control assembly is positioned on one side of the motor.
Preferably, the nucleation reation kettle is in motor one side is equipped with feeding flange and first inlet pipe, the nucleation reation kettle is in the motor is kept away from one side of temperature sensor is equipped with the injection subassembly, the injection jar of injection subassembly is equipped with the high-pressure nitrogen gas air inlet, the injection jar pass through the pipeline with the inside injection nozzle intercommunication of nucleation reation kettle.
Preferably, the exhaust port of the nucleation reaction kettle is communicated with the first condensation pipe, and activated carbon is arranged in a pipeline at one end of the first condensation pipe, which is not communicated with the vacuum pump.
Preferably, a second feeding pipe is arranged on one side, close to the temperature sensor, of the cladding reaction kettle, the exhaust port of the cladding reaction kettle is communicated with a second condensation pipe, the activated carbon is arranged in the pipeline communicated with the second condensation pipe, and the activated carbon is arranged in a discharging pipe at the top of the separation liquid storage tank.
Preferably, the heat exchanger is a tube type heat exchanger, a feed inlet of the heat exchanger is communicated with the first discharge port, and a discharge port of the heat exchanger is communicated with the cladding reaction kettle.
Preferably, the centrifuge is a tube centrifuge or a flat centrifuge, a liquid inlet pipe of the centrifuge is communicated with the second discharge port, and a liquid outlet pipe of the centrifuge is communicated with the separation liquid storage tank.
Therefore, the utility model adopts the above structure a quantum dot is synthetic and separator, its beneficial effect is:
1. the quantum dots are subjected to nucleation and cladding reaction, and the quantum dots are cooled by the heat exchanger and then enter the cladding reaction kettle for cladding reaction;
2. the nucleation reaction kettle and the cladding reaction kettle are connected with the separator, and the solution after reaction directly enters the centrifuge for purification treatment, so that the installation space is saved, the loss caused by manual transfer is reduced, the operation is convenient and fast, and the labor and the material cost are saved.
The technical solution of the present invention is further described in detail by the accompanying drawings and examples.
Drawings
Fig. 1 is a front sectional view of the quantum dot synthesizing and separating device of the present invention.
Reference numerals
1. A nucleation reaction kettle; 2. canning a reaction kettle; 3. a centrifuge; 4. a nucleation liquid storage tank; 5. a liquid storage tank is sheathed; 6. separating the liquid storage tank; 7. a vacuum pump; 8. activated carbon; 9. an injection tank; 10. a motor; 11. A temperature sensor; 12. a feed flange; 13. a first feed tube; 14. an injection nozzle; 15. a first condenser pipe; 16. a second condenser pipe; 17. a second feed tube; 18. a heat exchanger; 19. a low pressure nitrogen inlet; 20. and (4) heating the sleeve.
Detailed Description
The technical solution of the present invention is further explained by the accompanying drawings and examples.
Unless defined otherwise, technical or scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
Fig. 1 is an elevational view and a sectional view of the quantum dot synthesizing and separating device, as shown in the figure, a quantum dot synthesizing and separating device, which comprises a nucleation mechanism, a cladding mechanism and a separating mechanism which are sequentially communicated, and the top of a nucleation reaction kettle 1 of the nucleation mechanism is communicated with a nucleation liquid storage tank 4. The nucleation liquid storage tank 4 is communicated with the vacuum pump 7 through a first condenser pipe 15, and a first discharge port of the nucleation reaction kettle 1 is communicated with the cladding reaction kettle 2 of the cladding mechanism through a heat exchanger 18. And a second discharge port of the cladding reaction kettle 2 is communicated with a centrifugal machine 3 of the separation mechanism, and the centrifugal machine 3 is communicated with a separation liquid storage tank 6. The top of the cladding reaction kettle 2 is communicated with a cladding liquid storage tank 5, and the height of the nucleation reaction kettle 1 is higher than that of the cladding reaction kettle 2. When the quantum dots with the core-shell structure are prepared, the core is rapidly formed in the nucleation reaction kettle 1, the cladding reaction is carried out in the cladding reaction kettle 2, and after the reaction is finished, the solid-liquid separation is carried out by the separation mechanism, so that the solid, namely the quantum dots with the core-shell structure, is obtained. The arrangement of the heat exchanger 18 is to rapidly exchange heat and cool the high-temperature nucleation reaction liquid in the nucleation reaction kettle 1 and then put the nucleation reaction liquid into the cladding reaction kettle 2 for continuous reaction.
Nucleating reaction kettle 1 and cladding reation kettle 2 all are equipped with stirring subassembly, low pressure nitrogen gas inlet 19, gas vent and temperature control component, and stirring subassembly's motor 10 passes through the transmission shaft to be connected with stirring vane, and stirring vane is located nucleating reaction kettle 1 and cladding reation kettle 2's central authorities respectively. The heating jacket 20 of the temperature control component is respectively sleeved outside the nucleation reaction kettle 1 and the cladding reaction kettle 2, and the temperature sensor 11 of the temperature control component is positioned at one side of the motor 10. The solution inside the nucleation reaction kettle 1 and the cladding reaction kettle 2 is stirred by the stirring blades, so that the full mixing is realized. The arrangement of the heating jacket 20 enables the nucleation reaction kettle 1 and the cladding reaction kettle 2 to quickly reach the reaction temperature. Temperature sensor 11 is used for monitoring nucleation reation kettle 1 and cladding reation kettle 2 inside reaction temperature, and nucleation reation kettle 1 and cladding reation kettle 2 are inside all to be equipped with cooling coil for control two reaction temperature. The arrangement of the low-pressure nitrogen gas inlet 19 can adjust the pressure inside the nucleation reaction kettle 1 on one hand, and enables the inside of the cladding reaction kettle 2 to be in a nitrogen atmosphere on the other hand.
Nucleating reaction kettle 1 is equipped with feeding flange 12 and first inlet pipe 13 in motor 10 one side, and nucleating reaction kettle 1 is equipped with the injection subassembly in motor 10 one side of keeping away from temperature sensor 11. The injection tank 9 of the injection assembly is provided with a high-pressure nitrogen gas inlet, and the injection tank 9 is communicated with an injection nozzle 14 inside the nucleation reaction kettle 1 through a pipeline. The feeding flange 12 is used for adding solid raw materials into the nucleation reaction kettle 1, the first feeding pipe 13 is used for adding liquid raw materials into the nucleation reaction kettle 1, and the stirring blade mixes the two raw materials and then obtains ligand solution in the nucleation reaction kettle 1. After the injection tank 9 is filled with high-pressure nitrogen, the precursor solution inside the injection tank can be instantly sprayed into the nucleation reaction kettle 1 through the injection nozzle 14, and the precursor solution is rapidly diffused in the nucleation reaction kettle 1 to be mixed with the ligand solution for nucleation reaction.
An exhaust port of the nucleation reaction kettle 1 is communicated with a first condenser pipe 15, and an activated carbon 8 is arranged in a pipeline at one end of the first condenser pipe 15, which is not communicated with the vacuum pump 7. The gas discharged from the gas outlet of the nucleation reaction kettle 1 is condensed by the first condenser pipe 15 and then enters the nucleation liquid storage tank 4, and the uncondensed gas is exhausted after being adsorbed by the active carbon 8. A valve is arranged between the vacuum pump 7 and the first condensation pipe 15, the valve is opened when the vacuum pump 7 is opened, and the nucleation reaction kettle 1 is subjected to vacuum-pumping water and oxygen removal treatment.
The clad reaction kettle 2 is provided with a second feeding pipe 17 at one side close to the temperature sensor 11, and the exhaust port of the clad reaction kettle 2 is communicated with a second condensing pipe 16. The pipeline communicated with the second condensation pipe 16 is internally provided with active carbon 8, and the discharge pipe at the top of the separation liquid storage tank 6 is internally provided with the active carbon 8. The second feeding pipe 17 is used for feeding cladding reaction liquid into the cladding reaction kettle 2, discharged gas enters the cladding liquid storage tank 5 after being condensed by the second condensing pipe 16, and uncondensed gas is discharged after being adsorbed by the active carbon 8.
The heat exchanger 18 is a tube type heat exchanger 18, a feed inlet of the heat exchanger 18 is communicated with a first discharge port, and a discharge port of the heat exchanger 18 is communicated with the cladding reaction kettle 2. The heat exchanger 18 is arranged obliquely, so that the nucleation reaction liquid flowing out of the nucleation reaction kettle 1 is rapidly cooled while the nucleation reaction liquid reacting in the nucleation reaction kettle 1 is discharged into the cladding reaction kettle 2.
The centrifugal machine 3 is a tubular centrifugal machine 3 or a flat centrifugal machine 3, a liquid inlet pipe of the centrifugal machine 3 is communicated with a second discharge hole, and a liquid outlet pipe of the centrifugal machine 3 is communicated with a separation liquid storage tank 6. After solid-liquid separation is carried out by the centrifuge 3, the liquid is put into a separation liquid storage tank 6 for storage, and the quantum dot solid with the core-shell structure is taken away from the centrifuge 3.
The working process is as follows:
opening feeding flange 12 and first inlet pipe 13, throwing solid raw material and liquid raw material into nucleation reation kettle 1 inside, starting motor 10, stirring vane stirring makes nucleation reation kettle 1 inside obtain ligand solution. And opening the vacuum pump 7 and the valve, pumping out the water oxygen inside the nucleation reaction kettle 1, and simultaneously, opening the heating jacket 20 to ensure that the inside of the nucleation reaction kettle 1 reaches the first temperature. After the vacuum pump 7 and the valve are closed, low-pressure nitrogen is introduced into the nucleation reaction kettle 1 until the interior of the nucleation reaction kettle 1 is in a normal pressure state, and an exhaust port of the nucleation reaction kettle 1 is opened. The discharged gas is condensed by the first condenser pipe 15 and then enters the nucleation liquid storage tank 4, and the uncondensed gas is absorbed by the active carbon 8 and then is discharged.
After the nucleation reactor 1 is continuously heated to reach the second temperature, high-pressure nitrogen is filled into the injection tank 9, the precursor solution is rapidly sprayed out from the injection nozzle 14 under the action of high pressure, uniformly falls into the ligand solution to be mixed with the ligand solution, and the nucleation reaction is carried out under the stirring of the stirring blade.
After the nucleation reaction is finished, opening the first discharge port, allowing the nucleation reaction liquid to enter the heat exchanger 18, rapidly cooling to a third temperature, and allowing the nucleation reaction liquid to enter the cladding reaction kettle 2, wherein the heat exchange temperature is 200-270 ℃. Before the nucleation reaction liquid enters the cladding reaction kettle 2, low-pressure nitrogen is introduced to ensure that the cladding reaction kettle 2 is in a nitrogen atmosphere. The heating jacket 20 is opened to keep the reaction temperature in the cladding reaction kettle 2, the cladding reaction liquid is fed through the second feeding pipe 17, and the stirring blades stir and mix the nucleation reaction liquid and the cladding reaction liquid in the cladding reaction kettle 2 to carry out cladding reaction.
After the reaction of the cladding is finished, the heating jacket 20 is closed and the second feeding pipe 17 is opened to feed the purifying agent cooling reaction liquid. And opening the second discharge port, allowing the reacted solution to enter a centrifuge 3 for solid-liquid separation, allowing the liquid to enter a separation liquid storage tank 6, and taking out the solid which is the quantum dots with the core-shell structure.
Therefore, the utility model adopts the above structure a quantum dot is synthetic and separator, will nucleate reation kettle, cladding reation kettle and separating centrifuge and be connected, and solution after the reaction directly gets into carries out purification treatment in the centrifuge, reduces the loss that appears when the manpower shifts when saving installation space.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting the same, and although the present invention is described in detail with reference to the preferred embodiments, those skilled in the art should understand that: the technical solution of the present invention can still be modified or replaced with equivalents, and these modifications or replacements do not make the modified technical solution depart from the spirit and scope of the technical solution of the present invention.
Claims (7)
1. A quantum dot synthesizing and separating device is characterized in that: the device comprises a nucleation mechanism, a cladding mechanism and a separation mechanism which are sequentially communicated, wherein the top of a nucleation reaction kettle of the nucleation mechanism is communicated with a nucleation liquid storage tank, the nucleation liquid storage tank is communicated with a vacuum pump through a first condensation pipe, a first discharge port of the nucleation reaction kettle is communicated with a cladding reaction kettle of the cladding mechanism through a heat exchanger, a second discharge port of the cladding reaction kettle is communicated with a centrifugal machine of the separation mechanism, the centrifugal machine is communicated with the separation liquid storage tank, the top of the cladding reaction kettle is communicated with the cladding liquid storage tank, and the height of the nucleation reaction kettle is higher than that of the cladding reaction kettle.
2. The quantum dot synthesizing and separating apparatus of claim 1, wherein: the nucleating reaction kettle and the cladding reaction kettle are respectively provided with a stirring assembly, a low-pressure nitrogen gas inlet, an exhaust port and a temperature control assembly, a motor of the stirring assembly is connected with a stirring blade through a transmission shaft, the stirring blade is respectively positioned in the centers of the nucleating reaction kettle and the cladding reaction kettle, a heating sleeve of the temperature control assembly is respectively sleeved outside the nucleating reaction kettle and the cladding reaction kettle, and a temperature sensor of the temperature control assembly is positioned on one side of the motor.
3. The quantum dot synthesizing and separating apparatus of claim 2, wherein: nucleating reaction cauldron is in motor one side is equipped with feeding flange and first inlet pipe, nucleating reaction cauldron is in the motor is kept away from one side of temperature sensor is equipped with injection assembly, injection assembly's injection jar is equipped with high-pressure nitrogen gas air inlet, the injection jar pass through the pipeline with the inside injection nozzle intercommunication of nucleating reaction cauldron.
4. A quantum dot synthesis and separation device according to claim 2, wherein: the gas vent of nucleation reation kettle with first condenser pipe intercommunication, first condenser pipe not with be equipped with active carbon in the one end pipeline of vacuum pump intercommunication.
5. The quantum dot synthesizing and separating apparatus according to claim 4, wherein: the cladding reaction kettle is provided with a second feeding pipe at one side close to the temperature sensor, the exhaust port of the cladding reaction kettle is communicated with a second condensation pipe, the activated carbon is arranged in the pipeline communicated with the second condensation pipe, and the activated carbon is arranged in a discharging pipe at the top of the separation liquid storage tank.
6. The quantum dot synthesizing and separating apparatus of claim 1, wherein: the heat exchanger is a tube type heat exchanger, a feed inlet of the heat exchanger is communicated with the first discharge port, and a discharge port of the heat exchanger is communicated with the cladding reaction kettle.
7. A quantum dot synthesis and separation device according to claim 1, wherein: the centrifugal machine is a tubular centrifugal machine or a flat centrifugal machine, a liquid inlet pipe of the centrifugal machine is communicated with the second discharge hole, and a liquid outlet pipe of the centrifugal machine is communicated with the separation liquid storage tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222281721.7U CN218689384U (en) | 2022-08-29 | 2022-08-29 | Quantum dot synthesis and separation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222281721.7U CN218689384U (en) | 2022-08-29 | 2022-08-29 | Quantum dot synthesis and separation device |
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| Publication Number | Publication Date |
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| CN218689384U true CN218689384U (en) | 2023-03-24 |
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| CN202222281721.7U Active CN218689384U (en) | 2022-08-29 | 2022-08-29 | Quantum dot synthesis and separation device |
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- 2022-08-29 CN CN202222281721.7U patent/CN218689384U/en active Active
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