WO2018192539A1

WO2018192539A1 - Quantum dot core synthesis device and quantum dot core synthesis method

Info

Publication number: WO2018192539A1
Application number: PCT/CN2018/083625
Authority: WO
Inventors: 陈绍楷
Original assignee: 东莞市睿泰涂布科技有限公司
Priority date: 2017-04-21
Filing date: 2018-04-19
Publication date: 2018-10-25

Abstract

Disclosed is a quantum dot core synthesis device, comprising a core reaction region, which comprises at least one spiral reaction tube. A path groove which extends in a direction opposite to the spiral shape and enables reactants injected into the reaction tube to generate a bubbling effect through friction is formed on the inner wall of the spiral reaction tube; a heating region covers a front section of the core reaction region; a cooling region covers a rear section of the reaction region; a plurality of injection openings are formed at the front end of the core reaction region; a plurality of seston discharging openings are formed at the rear end of the core reaction region; the front end of the core reaction region is connected with a pressurization device. Also disclosed is a quantum dot core synthesis device. The quantum dot core synthesis device in the present invention is simple in structure and reliable; by forming a path groove on the spiral reaction tube, reactants can be stirred; the passing time of the reactants in the spiral reaction tube can be controlled by regulating the inner diameter and the length of the spiral reaction tube with regard to different kinds of cores to be synthesized, so that cores of high quality can be obtained.

Description

Quantum dot nuclear synthesis device and quantum dot core synthesis method

[0001] The present invention relates to the field of quantum dot synthesis, and in particular to a quantum dot core synthesis device and a quantum dot core synthesis method implemented by the quantum dot nuclear synthesis device.

Background technique

[0002] In the prior art, the synthesis method of quantum dots is a solution process mainly consisting of a flask surrounding a heating jacket, a magnetic stirrer which can make the internal solution of the flask uniform, and a temperature regulator and a temperature meter for controlling the temperature of the solution. In addition, a capacitor that maintains a stable concentration and a manifold that converts the vacuum/nitrogen atmosphere are added.

[0003] The synthesis method is to synthesize a core using an organic compound of a precursor, and in order to form a proper shell in the mixed-kneaded reactor by the synthesized core and the stabilizer, the precursor is repeatedly injected to form a structurally stable core. The shell structure has recently been issued with a one-pot process in which all of the reactants are placed in the reactor at once and the shell process is added.

technical problem

[0004] Thus, the solution process synthesis method becomes a large-capacity enthalpy. In order to achieve uniformity in the reaction substance, the impeller also replaces the magnetic stirrer with an impeller, but the reaction is caused by uneven temperature difference and uneven environment. Differences in concentration and differences in combinations. Quantum dot synthesis is Ostwald ripening, which is also a function of temperature and enthalpy. It is reported that this technique is a small particle that grows after combining with relatively large particles. When a nanoparticle of the desired size is formed, the particle stops. The technology of growth. However, the current method is to control the growth of particles by cooling, which causes a temperature difference, and it is difficult to synthesize particles of uniform size. Therefore, these factors also affect the luminescent properties of quantum dot nanoparticles and the uniform dispersion of particles.

[0005] In order to obtain nanoparticles of a certain size, rapid cooling is performed. Since the reaction product also contains by-products and organic substances, the organic matter is removed by centrifugal filtration. The separation of the nanoparticles can be carried out by centrifugal filtration to distinguish the size of the particles by a strong polar solvent such as acetone or ethanol. Forced agitation by a magnetic bar or a mixer during each reaction, although it is known that a relatively uniform agitation can be achieved, but The amount of reactants, the reaction agitation speed will vary, which will affect the size of the particles and stabilize the formation of nanoparticles.

[0006] This prior art synthesis method additionally requires a precursor reactor, a nuclear reactor, a core/shell reactor, etc., because it is re-measured, measured, and then synthesized after each reaction, so there is no continuous operation. Disadvantages. Moreover, due to differences in reaction time, particle separation, etc., it may be impossible to obtain nanoparticles having uniform characteristics.

[0007] The synthesis of nuclei is an important process in the synthesis of quantum dots. How to simplify the synthesis process of nuclei by simple and reasonable synthesis devices, and to produce high-quality nuclei that meet the needs of quantum dot synthesis is the pursuit of the industry.

Problem solution

Technical solution

In order to solve the above problems, the present invention discloses a quantum dot core synthesizing device.

The present invention also discloses a quantum dot core synthesis method implemented by the quantum dot core synthesis device.

[0010] The technical solution adopted by the present invention to achieve the above object is:

[0011] A quantum dot core synthesis device, comprising a nuclear reaction zone, the nuclear reaction zone comprising at least one spiral reaction tube, wherein the inner wall of the spiral reaction tube is provided with an opposite direction to the spiral to be injected into the reaction tube a channel for the bubbling effect of the reactant due to friction, the front portion of the nuclear reaction zone is coated with a heating zone, the rear section of the reaction zone is covered with a cooling zone, and a plurality of injection ports are provided at the front end of the nuclear reaction zone. The rear end of the nuclear reaction zone is provided with a plurality of float discharge ports, and the front end of the nuclear reaction zone is connected with a pressurizing device.

[0012] The heating zone and the cooling zone respectively comprise a temperature control tube wound on the spiral reaction tube, and the temperature control tube is filled with liquid water or oil for controlling temperature, the heating zone and the cooling zone. The temperature control tubes are respectively connected to the heating device and the external cooler.

[0013] The rear portion of the nuclear reaction zone is provided with a rapid rotation area and a float discharge area, and the float discharge port is disposed in the float discharge area;

[0014] The rear end of the nuclear reaction zone is connected to at least one transport conduit for transporting the core.

[0015] The distance between the tubes of the spiral reaction tube in the rapid rotation region is smaller than the distance between the tubes of the spiral reaction tube in the front portion of the nuclear reaction region, and the distance between the tubes in the discharge region of the floating material is larger than the tube of the spiral reaction tube in the front portion of the nuclear reaction region. Distance between. [0016] The diameter of the rapid rotation zone is three times the diameter of the spiral reaction tube in the front section of the nuclear reaction zone; the curvature of the rapid rotation zone is reduced by 50% compared with the spiral reaction tube in the front section of the nuclear reaction zone.

[0017] Two injection ports are disposed at the front end of the nuclear reaction zone, and an injection port is provided to the emergency speed rotation zone in the middle of the nuclear reaction zone.

[0018] A quantum dot core synthesis method implemented by the foregoing quantum dot core synthesis device, comprising the steps of: converting a nuclear reaction zone spiral reaction tube into a nitrogen atmosphere after vacuum evacuation, and converting a Cd precursor, a chloride III The octylphosphine and the 1-octadecene are mixed into the spiral reaction tube of the nuclear reaction zone through the injection port, and the spiral reaction tube is heated to the set temperature through the heating zone, and the reactants pass through the set time and pass the setting. After the length, the oleylamine and the Se precursor are added to form a CdSe core, and the impurities generated by the reaction are accelerated by the rapid rotation region and then float on the reactants, and the impurities are discharged from the float discharge port in the discharge region of the float, and then refined. CdSe core.

[0019] a rearward section of the nuclear reaction zone is provided with a rapid rotation zone and a float discharge zone, and the float discharge port is disposed in the float discharge zone;

[0020] two injection ports are arranged at the front end of the nuclear reaction zone, and an injection port is provided in the central portion of the nuclear reaction zone for the emergency speed rotation region;

[0021] The rear end of the nuclear reaction zone is connected with at least one transport conduit for transporting the core.

[0022] The temperature of the heating zone is maintained at 270-290 degrees Celsius, and a Cd precursor, trioctylphosphine chloride, 1-octadecene chloride is injected into the left injection port at the front end of the nuclear reaction zone, and the reactant is in a spiral reaction tube. Pushing 100cm forward to the right injection port by nitrogen pressure, injecting oleylamine and Se precursor into the right injection port, the reactants continue to mix and react in the spiral reaction tube, and continue to move until CdSe core is formed, nuclear The size, that is, the wavelength of the quantum dots, is determined by the length of the spiral reaction tube and the reaction between the cells.

[0023] The CdSe core enters the rapid rotation region in the latter stage of the nuclear reaction zone, and the latter part of the nuclear reaction zone is a cooling zone, and the temperature is maintained at 0-4 degrees Celsius. In order to separate the CdSe core and impurities, the polarity is injected into the injection port of the emergency rotation zone. Strong ethanol, acetone, the reactants flow rapidly in the rapid rotation zone, and pass through the reaction tube with a length of 150~200cm in 5 minutes. As the curvature of the spiral reaction tube becomes soft, the light impurities will float. The reactant flows upward to be removed to the outside of the spiral reaction tube through the float discharge port, and the synthesized core is discharged from the delivery pipe.

Advantageous effects of the invention Beneficial effect

[0024] The beneficial effects of the present invention are as follows: The quantum dot core synthesizing device of the present invention has a simple and reliable structure, and the reactants can be stirred by a channel groove provided in the spiral reaction tube, and the different kinds of nuclear adjustment spirals to be synthesized are needed. The inner diameter and length of the reaction tube control the passage of the reactants in the spiral reaction tube, so that a high-quality core can be obtained, which is highly efficient and stable, and lays a solid foundation for synthesizing quantum dots which improve luminous efficiency and vividness, and improves quantum. The stability of the dots and the uniformity of the particle size maximize quantum efficiency.

[0025] The present invention will be further described below in conjunction with the drawings and specific embodiments.

Brief description of the drawing

DRAWINGS

1 is a schematic view showing the structure of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

[0027] Embodiments Referring to the drawings, this embodiment discloses a quantum dot core synthesis device including a nuclear reaction zone, the nuclear reaction zone including at least one spiral reaction tube 1, and the inner wall of the spiral reaction tube 1 is provided There is a channel groove in which the reactant injected into the reaction tube generates a bubbling effect due to friction in a direction opposite to the spiral shape, and the front portion of the nuclear reaction region is coated with a heating zone 2, and the rear portion of the reaction zone is covered with a cooling zone 3 a plurality of injection ports 4 are arranged at the front end of the nuclear reaction zone, and a plurality of floating material discharge ports are arranged at the rear end of the nuclear reaction zone.

The front end of the nuclear reaction zone is connected with a pressurizing device.

[0028] The heating zone 2 and the cooling zone 3 respectively comprise a temperature control tube wound on the spiral reaction tube 1, and the temperature control tube is filled with liquid water or oil for controlling temperature, and the heating zone 2 The temperature control tubes of the cooling zone 3 are connected to the heating device 7 and the external cooler 8, respectively.

[0029] a rearward section of the nuclear reaction zone is provided with a rapid rotation zone 11 and a float discharge zone, and the float discharge port 5 is disposed in the float discharge zone;

[0030] The rear end of the nuclear reaction zone is connected to at least one transport conduit 6 for transporting the core.

[0031] The distance between the tubes of the spiral reaction tube 1 in the rapid rotation region 11 is smaller than the distance between the tubes of the spiral reaction tube 1 in the front portion of the nuclear reaction region, and the distance between the tubes in the discharge region of the floating material is larger than the spiral reaction in the front portion of the nuclear reaction region. The distance between the tubes of the tube 1.

[0032] The diameter of the rapid rotation region 11 is three times the diameter of the spiral reaction tube 1 in the front stage of the nuclear reaction zone; The curvature of the speed rotation region 11 is reduced by 50% compared to the spiral reaction tube 1 in the front stage of the nuclear reaction zone.

[0033] Two injection ports 4 are provided at the front end of the nuclear reaction zone, and an injection port 4 is provided to the emergency speed rotation zone 11 in the middle of the nuclear reaction zone.

[0034] A quantum dot core synthesis method implemented by the foregoing quantum dot core synthesis device, comprising the steps of: converting a nuclear reaction zone spiral reaction tube 1 into a nitrogen atmosphere after being vacuum-exhausted, and chlorinating the Cd precursor; Trioctylphosphine and 1-octadecene are mixed into the spiral reaction tube 1 of the nuclear reaction zone through the injection port 4, and the spiral reaction tube 1 is heated to a set temperature through the heating zone 2, and when the reactants are set. After setting the length, the oleylamine and the Se precursor are added to form a CdSe core, and the impurities generated by the reaction are accelerated by the rapid rotation region 11 and then float on the reactants, and the float discharge port 5 in the discharge region of the float is discharged. The impurities are discharged, and then a purified CdSe core is obtained.

[0035] a rearward section of the nuclear reaction zone is provided with a rapid rotation zone 11 and a float discharge zone, and the float discharge port 5 is disposed in the float discharge zone;

[0036] There are two injection ports 4 at the front end of the nuclear reaction zone, and an injection port 4 for the emergency speed rotation region 11 in the middle of the nuclear reaction zone;

[0037] The rear end of the nuclear reaction zone is connected to at least one transport conduit 6 for transporting the core.

[0038] The temperature of the heating zone 2 is maintained at 270-290 degrees Celsius, and a Cd precursor, trioctylphosphine chloride, 1-octadecene chloride is injected into the left injection port 4 at the front end of the nuclear reaction zone, and the reactant is in a spiral In the reaction tube 1, the pressure of the nitrogen gas is pushed forward 100 cm before reaching the right injection port 4, and the oleylamine and Se precursor are injected into the right injection port 4, and the reactants continue to be mixed and reacted in the spiral reaction tube 1. Moving continues until the CdSe core is generated, and the size of the core, that is, the wavelength of the quantum dot, is determined by the length of the spiral reaction tube 1 and the passage of the reactants through the turns.

[0039] The CdSe core enters the rapid rotation region 11 in the latter stage of the nuclear reaction zone, and the rear portion of the nuclear reaction zone is the cooling zone 3, and the temperature is maintained at 0-4 degrees Celsius. In order to separate the CdSe core and impurities, the injection port to the emergency rotation zone 11 is used. 4, the injection of polar ethanol and acetone, the reactants flow rapidly in the rapid rotation zone 11, and the reaction tube having a length of 150 to 200 cm is passed through the day for 5 minutes, and the curvature of the spiral reaction tube 1 becomes softer. The light-weight impurities float on the reactants and are discharged to the outside of the spiral reaction tube 1 through the float discharge port 5, and the synthesized core is discharged from the delivery pipe 6.

[0040] The quantum dot core synthesizing device of the present invention has a simple and reliable structure, and the reactants can be stirred by the channel groove provided in the spiral reaction tube 1, and the inside of the spiral reaction tube 1 is adjusted for different kinds of cores to be synthesized. The diameter and length control the passage of the reactants in the spiral reaction tube 1 to obtain a high-quality core, which is highly efficient and stable, and lays a solid foundation for synthesizing quantum dots which improve luminous efficiency and vividness, and improves quantum dots. Uniform stability and particle size maximize quantum efficiency.

The above description is only a preferred embodiment of the present invention and is not intended to limit the invention in any way. Any person skilled in the art can make many possible changes and modifications to the technical solutions of the present invention by using the technical means and technical contents disclosed above, or modify to equivalent changes, etc. without departing from the scope of the technical solutions of the present invention. Effective embodiment. Therefore, equivalent changes made in accordance with the shapes, configurations, and principles of the present invention are intended to be included within the scope of the present invention.

Embodiments of the invention

[0042] Embodiments Referring to the drawings, the present embodiment discloses a quantum dot core synthesis apparatus including a nuclear reaction zone including at least one spiral reaction tube 1 on which an inner wall of the spiral reaction tube 1 is disposed There is a channel groove in which the reactant injected into the reaction tube generates a bubbling effect due to friction in a direction opposite to the spiral shape, and the front portion of the nuclear reaction region is coated with a heating zone 2, and the rear portion of the reaction zone is covered with a cooling zone 3 a plurality of injection ports 4 are arranged at the front end of the nuclear reaction zone, and a plurality of floating material discharge ports are arranged at the rear end of the nuclear reaction zone.

[0043] The heating zone 2 and the cooling zone 3 respectively comprise a temperature control tube wound on the spiral reaction tube 1, and the temperature control tube is filled with liquid water or oil for controlling temperature, and the heating zone 2 The temperature control tubes of the cooling zone 3 are connected to the heating device 7 and the external cooler 8, respectively.

[0044] a rearward section of the nuclear reaction zone is provided with a rapid rotation zone 11 and a float discharge zone, and the float discharge port 5 is disposed in the float discharge zone;

[0045] The rear end of the nuclear reaction zone is connected to at least one transport conduit 6 for transporting the core.

[0046] The distance between the tubes of the spiral reaction tube 1 in the rapid rotation region 11 is smaller than the distance between the tubes of the spiral reaction tube 1 in the front portion of the nuclear reaction region, and the distance between the tubes in the discharge region of the floating portion is larger than the spiral reaction in the front portion of the nuclear reaction region. The distance between the tubes of the tube 1.

[0047] The diameter of the rapid rotation region 11 is three times the diameter of the spiral reaction tube 1 in the front stage of the nuclear reaction zone; the curvature of the rapid rotation region 11 is reduced by 50% compared with the spiral reaction tube 1 in the front stage of the nuclear reaction zone. [0048] Two injection ports 4 are provided at the front end of the nuclear reaction zone, and an injection port 4 is provided to the emergency speed rotation zone 11 in the middle of the nuclear reaction zone.

[0049] A quantum dot core synthesis method implemented by the aforementioned quantum dot core synthesis device, comprising the steps of: converting a nuclear reaction zone spiral reaction tube 1 into a nitrogen atmosphere after vacuum evacuation, and clotting the Cd precursor; Trioctylphosphine and 1-octadecene are mixed into the spiral reaction tube 1 of the nuclear reaction zone through the injection port 4, and the spiral reaction tube 1 is heated to a set temperature through the heating zone 2, and when the reactants are set. After setting the length, the oleylamine and the Se precursor are added to form a CdSe core, and the impurities generated by the reaction are accelerated by the rapid rotation region 11 and then float on the reactants, and the float discharge port 5 in the discharge region of the float is discharged. The impurities are discharged, and then a purified CdSe core is obtained.

[0050] a rearward section of the nuclear reaction zone is provided with a rapid rotation zone 11 and a float discharge zone, and the float discharge port 5 is disposed in the float discharge zone;

[0051] There are two injection ports 4 at the front end of the nuclear reaction zone, and an injection port 4 is provided to the emergency speed rotation region 11 in the middle of the nuclear reaction zone;

[0052] The rear end of the nuclear reaction zone is connected to at least one transport conduit 6 for transporting the core.

[0053] The temperature of the heating zone 2 is maintained at 270-290 degrees Celsius, and a Cd precursor, trioctylphosphine chloride, 1-octadecene chloride is injected into the left injection port 4 at the front end of the nuclear reaction zone, and the reactant is in a spiral In the reaction tube 1, the pressure of the nitrogen gas is pushed forward 100 cm before reaching the right injection port 4, and the oleylamine and Se precursor are injected into the right injection port 4, and the reactants continue to be mixed and reacted in the spiral reaction tube 1. Moving continues until the CdSe core is generated, and the size of the core, that is, the wavelength of the quantum dot, is determined by the length of the spiral reaction tube 1 and the passage of the reactants through the turns.

[0054] The CdSe core enters the rapid rotation region 11 in the latter stage of the nuclear reaction zone, and the rear portion of the nuclear reaction zone is the cooling zone 3, and the temperature is maintained at 0-4 degrees Celsius. In order to separate the CdSe core and impurities, the injection port to the emergency rotation zone 11 is used. 4, the injection of polar ethanol and acetone, the reactants flow rapidly in the rapid rotation zone 11, and the reaction tube having a length of 150 to 200 cm is passed through the day for 5 minutes, and the curvature of the spiral reaction tube 1 becomes softer. The light-weight impurities float on the reactants and are discharged to the outside of the spiral reaction tube 1 through the float discharge port 5, and the synthesized core is discharged from the delivery pipe 6.

[0055] The quantum dot core synthesis device of the present invention has a simple and reliable structure, and the reactants can be stirred by the channel groove provided in the spiral reaction tube 1, and the inner diameter of the spiral reaction tube 1 is adjusted for different kinds of cores to be synthesized. , length, control the passage of reactants in the spiral reaction tube 1 to obtain a high quality core, Efficient and stable, it lays a solid foundation for the synthesis of quantum dots with improved luminous efficiency and sharpness, improves the stability of quantum dots and uniform particle size, and maximizes quantum efficiency.

Industrial applicability

[0057] The quantum dot core synthesizing device of the present invention has a simple and reliable structure, and the reactants can be stirred by the channel groove provided in the spiral reaction tube 1, and the inner diameter of the spiral reaction tube 1 is adjusted for different kinds of cores to be synthesized. , length, control the reaction of the reactants in the spiral reaction tube 1 through the day, so that high quality nuclear, high efficiency and stability, to lay a solid foundation for the synthesis of quantum dots that improve luminous efficiency and sharpness, improve the stability of quantum dots Uniformity of particle size and particle size maximizes quantum efficiency.

Claims

Claim

[Claim 1] A quantum dot core synthesis apparatus, comprising: a nuclear reaction zone, wherein the nuclear reaction zone includes at least one spiral reaction tube, and an inner wall of the spiral reaction tube is provided with an opposite direction to the spiral a channel for injecting a reactant into the reaction tube to generate a bubbling effect due to friction, a front portion of the nuclear reaction region is coated with a heating zone, a rear portion of the reaction zone is covered with a cooling zone, and a front end of the nuclear reaction zone is provided with a plurality of The injection port is provided with a plurality of floating material discharge ports at the rear end of the nuclear reaction zone, and a pressure device is connected to the front end of the nuclear reaction zone.

[Claim 2] The quantum dot core synthesizing device according to claim 1, wherein the heating zone

The cooling zone respectively comprises a temperature control tube wound on the spiral reaction tube, the temperature control tube is filled with liquid water or oil for controlling temperature, and the temperature control tube of the heating zone and the cooling zone is respectively connected with the heating device , external cooler connection.

[Claim 3] The quantum dot core synthesizing device according to claim 1, wherein a rear portion of the nuclear reaction zone is provided with a rapid rotation region and a float discharge region, and the float discharge port is provided in the float Object discharge area;

The rear end of the nuclear reaction zone is connected to at least one transport conduit for transporting the core.

[Claim 4] The quantum dot core synthesizing device according to claim 3, wherein a distance between tubes of the spiral reaction tube in the rapid rotation region is smaller than a distance between tubes of the spiral reaction tube in a front portion of the nuclear reaction region, The distance between the tubes of the float discharge area is greater than the distance between the tubes of the spiral reaction tube in the front section of the nuclear reaction zone.

[Claim 5] The quantum dot core synthesizing device according to claim 3, wherein the diameter of the rapid rotation region is three times the diameter of the spiral reaction tube in the front portion of the nuclear reaction region; and the bending ratio of the rapid rotation region The spiral reaction tube in the front section of the nuclear reaction zone is reduced by 50%.

[Claim 6] The quantum dot core synthesizing device according to claim 3, wherein two injection ports are provided at the front end of the nuclear reaction zone, and an injection port is provided for the emergency speed rotation region in the middle of the nuclear reaction zone.

[Claim 7] A quantum dot core synthesis method implemented by the quantum dot core synthesis device of claim

The method comprises the steps of: converting a nuclear reaction zone spiral reaction tube into a nitrogen atmosphere after vacuum evacuation, and converting the Cd precursor, trioctylphosphine chloride, and 1-octadecene chloride The spiral reaction tube injected into the nuclear reaction zone through the injection port is mixed, and the spiral reaction tube is heated to a set temperature through the heating zone, and the oleylamine and Se precursor are added after the reactant passes through the set day and passes the set length. Thereby, a CdSe core is generated, and the impurities generated by the reaction are accelerated by the rapid rotation region and then float on the reactant, and the impurities are discharged at the float discharge port of the float discharge region, and then the purified CdSe core is obtained.

The quantum dot core synthesis method according to claim 7, wherein a rear portion of the nuclear reaction region is provided with a rapid rotation region and a float discharge region, and the float discharge port is disposed in the float discharge region;

There are two injection ports at the front end of the nuclear reaction zone, and an injection port is arranged in the central portion of the nuclear reaction zone for the emergency speed rotation region;

The method of synthesizing a quantum dot core according to claim 8, wherein the temperature of the heating zone is maintained at 270 to 290 degrees Celsius, and a Cd precursor, trioctylphosphine chloride, 1 is injected into the left injection port at the front end of the nuclear reaction zone. - octadecene, the reactant is pushed in a spiral reaction tube by a pressure of 100 cm before reaching the right injection port, and the oleylamine and Se precursor are injected into the right injection port, and the reactant continues in the spiral reaction tube. Mixing, reacting, and continuing to move until the CdSe core is generated. The size of the core, that is, the wavelength of the quantum dot, is determined by the length of the spiral reaction tube and the reaction between the cells.

The quantum dot core synthesis method according to claim 9, wherein the CdSe core enters a rapid rotation region in a rear portion of the nuclear reaction region, and the rear portion of the nuclear reaction region is a cooling region, and the temperature is maintained at 0 to 4 degrees Celsius, in order to separate the CdSe core. And impurities, injecting strong polar ethanol and acetone into the injection port of the emergency speed rotating region, the reactants flow rapidly in the rapid rotation region, and pass through the reaction tube with a length of 150-200 cm for 5 minutes, with the spiral reaction The curvature of the tube becomes soft, and light-weight impurities float on the reactants, thereby being removed to the outside of the spiral reaction tube through the float discharge port, and the synthesized core is discharged from the delivery pipe.