KR101659133B1 - Apparatus for purifying organic compound - Google Patents

Abstract

An invention for an organic compound refining apparatus is disclosed. The apparatus for purifying an organic compound according to the present invention comprises: an inner tube having a supply portion to which a substance to be purified is supplied and a collecting portion to be sublimated or liquefied, the substance to be purified being moved in the supply portion; A vacuum device for evacuating the inner tube, and a heat flow inducing part for guiding the heat flow from the inner tube to the vacuum device side.

Description

[0001] APPARATUS FOR PURIFYING ORGANIC COMPOUND [0002]

The present invention relates to an organic compound purification apparatus. More particularly, the present invention relates to an organic compound refining apparatus capable of preventing a refining target material from being damaged by heat at a high temperature during purification of a material for an organic light emitting diode used for manufacturing an organic electroluminescence device.

Generally, an organic electroluminescent device is a device that injects electric charge into an organic film formed between an electron injection electrode (cathode) and a hole injection electrode (anode) to form a pair of electrons and holes, And the power consumption is relatively small.

The organic electroluminescent device is mainly used for a flat panel display using a phenomenon in which a direct current voltage is applied to a laminated thin film of an organic material, and electric energy is changed into light energy and emits light.

The organic electroluminescent material used for the organic electroluminescent device requires purification. In this case, the purification technique of the organic electroluminescent material separates only the pure pigment from the synthesized material and uses it for thin film deposition. As the purification technology of the organic electroluminescent material is improved, the color purity and luminous efficiency are improved and the luminescent lifetime of the organic electroluminescent device is prolonged. BACKGROUND ART In order to mass-produce an organic electroluminescent material, it is essential to refine an organic electroluminescent material capable of improving purification rate, purification purity, and yield.

The background art of the present invention is disclosed in Korean Patent Registration No. 0497448 (registered on June 16, 2005, entitled " Purification of Organic Ie Material Using Chelating Agent).

It is an object of the present invention to provide an organic compound refining apparatus capable of preventing a substance to be purified from being damaged by heat at a high temperature during an organic compound refining operation.

Another object of the present invention is to provide an apparatus for purifying an organic compound capable of quickly heating a substance to be purified, and to improve the temperature unbalance phenomenon, thereby making purification faster and more accurate.

An apparatus for purifying an organic compound according to the present invention includes: an inner tube having a supply portion to which a substance to be purified is supplied and a collecting portion to be sublimated or liquefied, the substance to be purified being moved in the supply portion; A vacuum device for evacuating the inner tube, and a heat flow inducing part for guiding the heat flow from the inner tube to the vacuum device side.

It is preferable that the heat conduction inducing portion is disposed in a direction different from the direction in which the substance to be purified is moved.

It is also preferable that the heat conduction inducing portion is disposed in a direction perpendicular to the direction in which the substance to be purified moves.

And a heat dissipation prevention unit disposed at one side of the supply unit and spaced apart from the inner tube to prevent heat loss of the inner tube.

It is also preferable that the present invention further comprises a buffer part disposed between the supply part and the collecting part, for collecting the impurities from the purification target material that is sublimated or vaporized in the supply part.

Further, it is preferable that the heat flow inducing portion is disposed between the heat loss preventing portion and the supplying portion.

Further, it is preferable that the heat conduction inducing portion is any one of a hot wire, a heating coil, and an object formed by a thermometer.

Further, it is preferable that the object formed by the thermo conductor is formed into at least one of a linear shape, a circular shape, a cylindrical shape, and a polygonal shape.

Preferably, the heat conduction inducing portion is temperature-controlled by a temperature-regulating heat supply device provided outside the heat-treating portion.

Further, it is preferable that the heat flow inducing portion is temperature-controlled by a heating device.

It is also preferable that the material to be purified is an organic compound for an organic light emitting device.

It is also preferable that a plurality of inner tubes are provided, and a plurality of inner tubes are connected to the vacuum apparatus around the vacuum apparatus.

According to the organic compound refining apparatus of the present invention, since the heat flow inducing unit is operated together with the heating unit of the supply unit to heat the purification target material, the purification target material can be sublimated or vaporized even at a relatively low temperature, .

In addition, since the hot air generated in the heat conduction inducing portion moves in the same direction as the moving direction of the substance to be refined and the contact time between the refining target substance and hot air is increased, heating of the refining substance can be performed quickly.

Further, by introducing the heat conduction inducing portion, the present invention improves the temperature difference imbalance between the external heating element and the chamber center caused by the enlargement of the equipment, so that purification of the organic compound can be performed more quickly and with high purity.

FIG. 1 is a cross-sectional view schematically showing the essential structure of an organic compound purifying apparatus according to a first embodiment of the present invention.
FIG. 2 is a cross-sectional view schematically showing the essential structure of an organic compound purifying apparatus according to a second embodiment of the present invention.
3 is a schematic view illustrating a state in which the organic compound purifying apparatus according to the second embodiment of the present invention is connected in a first connection type.
4 is a schematic view illustrating a state in which the organic compound purifying apparatus according to the second embodiment of the present invention is connected to the second connection type.
5 is a schematic view illustrating a state in which the organic compound purifying apparatus according to the second embodiment of the present invention is connected to the third connection type.
6 is a schematic view illustrating a state in which the organic compound purifying apparatus according to the second embodiment of the present invention is connected in a fourth connection type.
FIG. 7 is a cross-sectional view schematically showing the essential structure of an organic compound purifying apparatus according to a third embodiment of the present invention.
FIG. 8 is a cross-sectional view schematically showing the essential structure of an organic compound purifying apparatus according to a fourth embodiment of the present invention.

Hereinafter, an apparatus for purifying an organic compound according to an embodiment of the present invention will be described with reference to the accompanying drawings.

For convenience of explanation, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a cross-sectional view schematically showing the essential structure of an organic compound purifying apparatus according to a first embodiment of the present invention. 1, the organic compound purifying apparatus 1 according to the first embodiment of the present invention includes a heating and purifying section 5, a vacuum device 60, an opening / closing section 65, and a sealing / closing section 80 .

The heating and refining section 5 includes an inner tube 10 and a heating device 40. The inner tube 10 may be formed in various shapes within a technical idea in which the substance P to be purified is provided inside the inner tube 10.

The heating and refining unit 5 may be provided in a single or plurality of heating and refining units 5 and the plurality of heating and refining units 5 may be arranged in an I-shape, a L-shape, an H-shape, a C- As shown in FIG. The plurality of heating and refining units 5 may be modified into various shapes within the technical idea of using the vacuum apparatus 60 in common.

The inner tube 10 according to the first embodiment includes a supply unit 20 to which a purification target substance P is supplied and a collection unit 30 for sublimating or liquefying the purification target substance P to be moved toward the vacuum device 60 ).

A heating device 40 is installed outside the inner tube 10, and the inner tube 10 is divided into a plurality of sections and heated. The heating device 40 heats the inner tube 10 so that the temperature in the furthest section of the vacuum device 60 is the highest, so that the substance P to be purified in the inner tube 10 can be easily obtained.

A refining target substance (P) is supplied to the supplying section (20) constituting the inner tube (10). The supply part 20 including the discharge part 22 and the working part 24 is installed in the inner tube 10 in the state of being farthest away from the vacuum device 60 to be described later.

The supply part 20 is formed to penetrate and may be formed in various shapes within the technical idea including the discharge part 22 in which the sublimated or vaporized purified material P is discharged to the collecting part 30 side.

Both sides of the supply part 20 according to the first embodiment are formed in the shape of an open circular tube.

The discharge unit 22 is formed to penetrate one side of the supply unit 20 (right side in FIG. 1) so that the inside of the supply unit 20 is opened to the collecting unit 30 side to be described later.

The working portion 24 corresponds to a portion including the cylindrical shape of the supplying portion 20. [ The purifying target substance P is stored in the working unit 24 and the purifying target substance P stored in the working unit 24 is heated or sublimated or vaporized in the working unit 24, And drops to the collecting part 30 while moving in the installed direction.

The target substance P to be purified according to the first embodiment is an organic compound and may be, for example, a material for an organic optoelectronic device, wherein the organic compound includes an organic complex compound which is an organic metal complex compound as well as a pure organic compound . However, the substance P to be purified of the present invention is not limited thereto, and may be changed to other substances as necessary.

The organic optoelectronic device is not particularly limited as long as it is an element capable of converting electric energy and light energy into each other.

The organic photoelectrode refers to a device that requires charge exchange between an electrode and an organic material using holes or electrons.

Organic optoelectronic devices can be roughly classified into two types according to the operating principle. First, an exciton is formed in an organic material layer by a photon introduced into an element from an external light source. The exciton is separated into an electron and a hole, and the electrons and holes are transferred to different electrodes, Device.

The second type is an electronic device in which holes or electrons are injected into an organic semiconductor forming an interface with an electrode by applying a voltage or current to two or more electrodes and operated by injected electrons and holes.

Examples of the organic optoelectronic devices include organic optoelectronic devices, organic light emitting devices, organic solar cells, organic photoconductor drums, and organic transistors. All of them are used for injecting or transporting holes, An injection or transport material, or a luminescent material.

The material for an organic optoelectronic device according to the first embodiment is a material for an organic light emitting diode (OLED).

Examples of the organic compound (including organic-inorganic hybrid compound such as organic metal complex) in the material for the organic light emitting diode include a dopant, a host, an auxiliary electron transport layer, a major transport layer, a major injection layer, An electron transporting layer, an electron transporting layer, and the like, and the object to be purified of the present invention may be any one of them, but is not limited thereto.

2. Description of the Related Art Recently, organic light emitting devices have been attracting attention as the demand for flat panel displays increases. In general, organic light emission phenomenon refers to a phenomenon in which an organic material is used to convert electric energy into light energy.

The organic material layer of the organic light emitting device is a device that converts electrical energy into light by applying an electric current to the organic light emitting material, and typically has a structure in which a functional organic material layer is interposed between an anode and a cathode. Here, in order to enhance the efficiency and stability of the organic light emitting device, the organic material layer may have a multi-layered structure composed of different materials and may include a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer.

When a voltage is applied between the two electrodes in the structure of such an organic light emitting device, holes are injected into the anode and electrons are injected into the organic layer from the cathode, and injected holes and electrons are recombined (recombination) Energy excitons are formed. At this time, the exciton formed is moved to the ground state again, and light having a specific wavelength is generated.

In recent years, it is known that not only fluorescent light emitting materials but also phosphorescent emitting materials can be used as light emitting materials for organic light emitting devices. Such phosphorescence emission is a phenomenon in which electrons are transferred from a ground state to an excited state, It consists of a mechanism in which a singlet exciton is non-luminescent transitioned to a triplet exciton through Intersystem Crossing, and then a triplet exciton emits light while transitioning to a bottom state.

The purifying target substance P sublimated or vaporized in the working section 24 is discharged to the collection section 30 side through the discharge section 22.

The collecting unit 30 is arranged between the supplying unit 20 and the vacuum apparatus 60 and the supplying unit 30 is disposed between the supplying unit 20 and the vacuum apparatus 60. [ 20 and the vacuum device 60. In this case,

In the first embodiment, five collecting portions 32, 34, 36, 38 and 39 are illustrated as being provided between the supplying portion 20 and the vacuum device 60. The purifying target substance P having the highest purity in the first collecting unit 32 disposed on the side closest to the supplying unit 20 is sublimated or liquefied and the purifying target substance P The purifying target substance P or the impurity in the lowest purity state is sublimated or liquefied in the fifth collecting unit 39 disposed on the side of the second collecting unit 39. [ In the second collecting part 34, the third collecting part 36 and the fourth collecting part 38 disposed between the first collecting part 32 and the fifth collecting part 39, the first collecting part 32 And the purifying target substance P containing the same amount of impurities as the purifying substance P is sublimed or liquefied.

In the first embodiment, five collectors 32, 34, 36, 38 and 39 are provided between the supply unit 20 and the vacuum apparatus 60, but the present invention is not limited thereto. The collecting part 30 of the present invention may be a form including one or two or more and four or less collecting spaces or a form including six or more collecting spaces, Various types of deformation can be performed depending on properties, heating temperature, pressure, and the like.

The heating device 40 heats the purification target substance P provided in the inner tube 10. The heating device 40 heats the purification target material P provided in the supply part 20 so as to be sublimated or vaporized and the purification target material P moved along the collection part 30 is heated do.

The heating apparatus 40 according to the first embodiment includes a heating body 41 installed to surround the outer side of the inner tube 10 and a heating body 41 disposed inside the heating body 41 to heat the inner tube 10 And a heating hot wire 42.

This heating device 40 is exemplified by the form in which the supply part includes the heating part 44 and the collecting part includes the heating part 50. The supply part heating part 44 is provided on the supply part 20 side to heat the supply part 20 so that the purification target material P provided in the supply part 20 is sublimated or vaporized. The collecting part heating part 50 is provided on the collecting part 30 side to heat the collecting part 30 to heat the collecting part 30 so that the supplying part is lower in temperature than the heat part 44, (P) to be sublimated or liquefied in the collecting section (30).

The inner tube 10 is divided into a plurality of sections to be heated to a side of the vacuum device 60 from the sealed input part 80 to be described later and the heating device 40 is heated to a temperature of the section closest to the sealed part 80 The inner tube 10 is heated. That is, the inner tube 10 is divided into a section of the supply section 20 where the supply section is heated by the heat section 44 and a section of the collection section 30 where the collection section is heated by the heat section 50, The temperature of the section of the supply part 20 closest to the charging part 80 can be heated to the highest temperature.

In the inner tube 10, the collecting part 30 is divided into a plurality of sections so that the collecting part is heated by the heating part 50, and the collecting part heating part 50 is disposed along the longitudinal direction of the collecting part 30 A plurality of collecting units, each of which is independently controlled in temperature, may be provided in a form including the heating units 52, 54, 56, 58 and 59.

The collecting unit 50 according to the first embodiment includes a first heating unit 52, a second heating unit 54, a third heating unit 56, a fourth heating unit 58 and a fifth heating unit 59).

At this time, the section of the first collecting section 32 is heated by the first heating section 52, the section of the second collecting section 34 is heated by the second heating section 54, The third heating section 56 is connected to the fourth collecting section 38 by the fourth heating section 58 and the fifth collecting section 39 is heated by the fifth heating section 59 independently of the temperature Is controlled to be controlled.

The collecting unit 30 is divided into a plurality of sections toward the vacuum apparatus 60 from the sealed input unit 80 so that the collecting unit is heated by the heating unit 50, That is, the temperature of the section of the first collecting section 32 is the highest.

The inner tube 10 may be heated by dividing the supply section 20 into a plurality of sections and both the supply section 20 and the collection section 30 may be divided into a plurality of sections and heated . Also in this case, the heating apparatus 40 heats the inner tube 10 so that the temperature of the closest section to the sealed input section 80 is the highest.

The heating structure for the inner tube 10 as described above causes sublimation or vaporization of the substance P to be purified in the supply section 20 and the sublimation or liquefaction of the substance P to be purified And sublimation or liquefaction occurs so that substances having different properties, for example, different impurity contents, are collected for each section of the collecting part 30 divided into a plurality of parts.

The vacuum apparatus 60 is commonly connected to one or more inner tubes 10, and various types of vacuum forming apparatus may be used in the art of evacuating one or more inner tubes 10.

The vacuum device 60 is connected to the opening and closing part 65 communicated with the inner pipe 10 and the connection pipe 90. The inside of the inner pipe 10 is evacuated by the vacuum pressure formed by the operation of the vacuum device 60 And forms a fine pressure gradient in each section of the inner tube (10).

As the one or more inner tubes 10 are evacuated by the vacuum device 60, the purification target material P provided in the inner tube 10 is vacuumed to a lower temperature So that sublimation or vaporization can occur. The purification target substance P sublimated or vaporized in the supply section 20 moves along the pressure gradient formed by the action of the vacuum device 60 and is collected in the collection section 30 by being re-sublimated or liquefied .

The vacuum apparatus 60 according to the first embodiment can operate so as to communicate with the inner tube 10 or the plurality of inner tubes 10 so as to form vacuum pressure on the inner tube 10 or a plurality of inner tubes 10.

A heating device 40 is provided outside the inner tube 10 and a hole through which the purification target material P can move is provided between the supply part 20 and the collecting part 30 constituting the inner tube 10 A partition member 85 may be provided.

A partitioning member 85 may be provided between the collecting portions 30 divided into a plurality of portions so that the adjacent collecting portions 30 can be connected.

The pipe member 67 is connected to one side of the inner pipe 10 (reference right side in FIG. 1) and the pipe member 67 is connected to the vacuum device 60 through the opening / closing unit 65 and the connection pipe 90.

The opening and closing part 65 is provided between the inner tube 10 and the vacuum device 60 to selectively open and close the passage of the substance P to be purified which moves from the inner tube 10 to the vacuum device 60.

The opening and closing part 65 is manually or automatically operated to selectively open and close the inside of the opening and closing part 65 to control the movement of the purifying substance P moving from the inner tube 10 to the vacuum device 60 .

In the first embodiment of the present invention, the opening / closing part 65 is a valve device including a gate valve. However, the present invention is not limited to this, and the heating and purifying part 5 and the vacuum device 60, various kinds of opening / closing devices or valves can be used as the opening / closing part 65 of the present invention.

When the gate valve is used as the opening and closing part 65, it is manually or automatically operated to block or open the flow path, so that the flow of the fluid moving from the heating and refining part 5 to the vacuum device 60 can be controlled.

A sealing portion 80 is provided on the other side (left side in FIG. 1) of the inner tube 10 and the other side of the supplying portion 20 facing the sealing portion 80 is formed to pass through.

Various types of opening and closing devices may be used within the technical idea of sealing the passage portion of the supply portion 20.

The organic compound purifying apparatus 1 according to the first embodiment can be installed in various shapes according to the usage pattern in which the vacuum apparatus 60 is commonly used.

Hereinafter, the operating state of the organic compound purification apparatus 1 according to the first embodiment of the present invention will be described in detail with reference to the accompanying drawings.

In order to purify the purification target substance P using the organic compound purification apparatus 1 according to the first embodiment, the purification target substance P is supplied to the supply unit 20 first.

The supply of the substance P to be refined to the supply part 20 is performed by supplying the refining target substance P into the supply part 20 through the passage formed inside the sealed charging part 80 by the operation of the sealed charging part 80 do.

In the first embodiment, the substance P to be purified is exemplified as an electron transport layer (ETL).

When the refining target substance P is supplied to the supply part 20, the hermetically closing part 80 is operated to block the passage of the hermetically closing part 80, thereby blocking the supply part 20 from the outside air.

The inner tube 10 is evacuated by operating the vacuum device 60 after the inner tube 10 is opened and the vacuum device 60 is opened by opening the opening and closing part 65. On the other hand, So that a pressure gradient is formed.

When there are a plurality of inner tubes 10 communicating with the vacuum device 60, the inside of the plurality of inner tubes 10 is evacuated.

The heating target 40 connected to the plurality of inner tubes 10 is operated to heat the target substance P supplied to the supplying unit 20 so that the target substance P is sublimated or vaporized.

Heating is performed such that the refining target substance P supplied to the supplying section 20 is sublimated or vaporized by the operation of the supplying section heating section 44. [

The supply part heating part 44 heats the supply part 20 such that the temperature of the supply part 20 is equal to or higher than the sublimation point or the vaporization point temperature of the substance P to be purified so that the purification substance P supplied to the supply part 20 is sublimated or vaporized do.

At this time, since the inner tube 10 is evacuated by the vacuum device 60, the purification target substance P can be sublimed or vaporized at a lower temperature in a vacuum state compared to the atmospheric pressure state.

When the heating by the heating device 40 is performed, the respective sections of the inner tube 10 have different temperature gradients.

That is, the heating apparatus 40 heats the temperature of the inner tube 10, which is divided into the plurality of sections, farthest from the vacuum apparatus 60 so as to be equal to or higher than the sublimation point or the vaporization point temperature of the substance P And the other section is heated to a temperature lower than the sublimation point or the vaporization point temperature so that the temperature is gradually decreased from the farthest section from the vacuum apparatus 60 to the nearest section to the vacuum apparatus 60 .

The supply unit 20 is heated so that the supply unit is heated to a temperature equal to or higher than the sublimation point or vaporization point temperature of the substance P to be purified by the heat unit 44. The collector unit 30 is heated by the collector unit 50, Or the temperature of the collecting portion 30 is gradually lowered from the portion farthest from the vacuum device 60 to the portion nearest to the vacuum device 60 .

The heating process may be such that the supply unit 20 is heated first and the collecting unit 30 is heated at a later time or the supply unit 20 and the collecting unit 30 are simultaneously heated have.

When the substance P to be purified is heated to be sublimated or vaporized, the substance P to be purified is moved to the side of the vacuum device 60, and the substance P to be purified is sublimated or liquefied and purified.

The movement of the sublimate material P sublimated or vaporized in the supply section 20 is carried out along a fine pressure gradient formed in the inner tube 10 by driving of the vacuum device 60. Subsequently, the sublimation or sublimation of the substance P to be purified in each corresponding section of the collecting section 30 heated to the temperature region of the sublimation point or the vaporization point of the desired product while the substance P to be purified is moved along the pressure gradient Liquefaction is achieved.

For example, in the first collecting part 32 which is heated to the highest temperature in the temperature zone lower than the sublimation point or the vaporization point temperature of the substance P to be purified, the substance purified in high purity is sublimated or liquefied and collected, The second collecting unit to the fourth collecting unit 34, 36, and 38, which are heated to a temperature lower than that of the first collecting unit 32, include the same or a large amount of impurities as the first collecting unit 32 Impurities may be collected in the fifth collecting part 39 heated to a temperature lower than that of the fourth collecting part 38.

Hereinafter, an organic compound purifying apparatus 100 according to a second embodiment of the present invention will be described with reference to the drawings.

For the convenience of explanation, the same constituent elements as those of the first embodiment of the present invention are referred to by the same reference numerals, and a detailed description thereof will be omitted.

FIG. 2 is a cross-sectional view schematically showing essential components of an apparatus for purifying an organic compound according to a second embodiment of the present invention. FIG. 3 is a cross-sectional view schematically showing the organic compound purifying apparatus according to the second embodiment of the present invention, FIG. 4 is a view schematically showing a state in which the organic compound purifying apparatus according to the second embodiment of the present invention is connected to the second connection type. FIG. 5 is a cross- FIG. 6 is a schematic view illustrating a state in which the organic compound purifying apparatus according to the second embodiment of the present invention is connected in a fourth connection type .

As shown in FIGS. 2 and 3, a heat conduction inducing part 70 for guiding a heat flow from the inner tube 10 to the vacuum device 60 side is installed in succession to the inner tube 10.

A plurality of inner tubes 10 are provided and a plurality of inner tubes 10 are connected to the vacuum apparatus 60 around the vacuum apparatus 60. Since the number of the inner tubes 10 is greater than the number of the vacuum apparatuses 60 and the plurality of inner tubes 10 can commonly use the vacuum apparatus 60, the installation cost can be reduced and the space utilization can be increased .

Since the plurality of inner tubes 10 according to the second embodiment are connected via one vacuum device 60, the cost and space utilization can be further improved.

The heat-flow inducing unit 70 is operated together with the heating unit 44 in the state where the refining target substance P is inserted into the supply unit 20 so that the refining target substance P is heated. The target substance P is sublimated or vaporized.

Various types of heaters and heating members may be used in the heat flow inducing unit 70 within the technical idea of generating hot air inside the supply unit 20. [

The heat flow inducing unit 70 is disposed in a direction different from the direction in which the purification target substance P is moved (the horizontal direction in FIG. 6) The heat can be easily transferred to the heat exchanger P.

Since the heat flow inducing unit 70 according to the second embodiment is arranged in a direction perpendicular to the direction in which the substance P to be purified is moved, hot air is supplied in the same direction as the direction in which the substance P to be purified is moved, The time for which the target substance P and hot air are in contact with each other is increased, and the purification target substance P is quickly heated.

When the organic material such as the purification target substance P receives high heat, the damage is likely to occur or contamination is caused. Therefore, the supply portion 44 is operated with the heat flow inducing unit 70 generating hot air, Sublimation or vaporization of the substance P to be purified can also be achieved.

The operation of the heat conduction inducing unit 70 reduces the problem that the object P to be purified, which is an organic substance, is deformed when it receives heat at a high temperature, and can prevent contamination of purified water.

The heat conduction inducing unit 70 is installed using any one of a heat wire, a heating coil, and an object formed of a thermo conductor. In addition, other types of heat generating devices that generate heat by supplying electricity may be used as the heat conduction inducing unit 70 have.

The objects formed by the thermo conductor are formed into at least any one of linear, circular, cylindrical, and polygonal shapes. In addition, various shapes of objects are formed in the heat conduction induction part 70 ).

The heat conduction induction unit 70 may be controlled in temperature by a temperature regulating heat supply unit 97 provided outside the heating and refining unit 5 and temperature regulation may be performed by the heating unit 40. For example, Is possible.

The heat conduction inducing part 70 according to the second embodiment is provided with a heat ray in the vertical direction and a passage for moving the refining target substance P is formed inside the heat conduction inducing part 70.

When the refining target substance P is introduced into the supply part 20 through the hermetically sealing part 80, the purified substance P is introduced through the heat conduction inducing part 70 between the hermetically sealing part 80 and the supply part 20, The target substance P is moved.

The heating wire of the heat conduction inducing portion 70 forms a passage through which the refining target substance P is moved and forms a heat flux for heating the refining target substance P located in the supplying portion 20, Shape.

A heat loss prevention part 75 for preventing heat loss of the inner tube 10 is provided on one side of the supply part 20 (left side in FIG. 2).

The heat loss preventing portion 75 for preventing the heat loss of the inner tube 10 is provided so that the material for the organic light emitting diode can be refined even at a relatively low temperature so that damage and contamination of the refined material can be reduced.

The heat loss prevention part 75 according to the second embodiment is installed to the supply part 20 of the inner tube 10 and the heat flow induction part 70 is provided between the heat loss prevention part 75 and the supply part 20 .

And a heat loss prevention portion 75 is provided in a shape to surround the heat conduction induction portion 70. The heat loss prevention part 75 according to the second embodiment includes a heat loss prevention body 77 forming an internal passage and a heat loss prevention heat line 78 disposed inside the heat loss prevention body 77 to generate heat ).

The heat loss prevention part 75 is provided between the sealing part 80 and the supply part 20 and the heat flow induction part 70 is provided between the heat loss prevention part 75 and the supply part 20.

The heat conduction inducing part 70, the heat loss preventing part 75 and the supplying part 20 are formed so as to penetrate through the heat conduction guide part 75, 70, a heat loss prevention part 75 and a sealing part 80 for sealing the passage part of the supply part 20 are provided.

Various types of opening and closing devices may be used within the technical idea of sealing the passage portion of the supply portion 20.

The organic compound purifying apparatus 100 according to the second embodiment can be installed in various shapes according to the usage pattern in which the vacuum apparatus 60 is commonly used.

3, the vacuum device 60 is positioned at the center, and the connection pipe 90 extends to both the left and right sides of the vacuum device 60 and the opening and closing parts 65 are connected to the connection pipe 90 .

The opening and closing part 65 is connected to the inner pipe 10 through the pipe member 67 so that the two inner pipes 10 and the one vacuum device 60 are arranged in an I- .

4, the vacuum device 60 is positioned at the center, the connection pipe 90 is extended to both upper and lower sides of the vacuum device 60, and the opening and closing parts 65 are connected to the connection pipe 90 .

The opening and closing part 65 is connected to the inner pipe 10 through the pipe member 67 so that the two inner pipes 10 and the one vacuum device 60 are arranged in a " do.

5, the vacuum device 60 is positioned at the center, the connection pipe 90 is extended to both upper and lower sides of the vacuum device 60, and the opening and closing parts 65 are connected to the connection pipe 90, respectively .

The tubular member 67 is connected to both sides of the opening and closing part 65 and connected to the inner tube 10 so that the four inner tubes 10 and the one vacuum device 60 are arranged in the " 3 connection type.

As shown in FIG. 6, the vacuum device 60 is positioned at the center, and the vacuum device 60 is connected to the connection bracket 95 having a tube extending in the direction of the arrow.

Since a plurality of opening and closing parts 65 are radially connected to the connection bracket 95 and the inner tube 10 is connected to the opening and closing part 65, Are radially arranged and connected in a fourth connection type.

The opening and closing part 65 and the vacuum device 60 may be connected through a tubular connection pipe 90 and a plurality of opening and closing parts 65 may be connected to the vacuum device 60 through a separate connection bracket 95 .

The first to fourth connection types are described only taking the organic compound refining apparatus 100 that uses the vacuum apparatus 60 as a common example and the plurality of internal tubes 10 are used in common for the vacuum apparatus 60 Of course, it is possible to transform into various shapes within the idea.

When the organic compound purifying apparatus 100 according to the second embodiment is operated, the heat flow inducing unit 70 and the heat loss preventing unit 75 are operated together with the heating device 40 to supply hot air to the supplying unit 20 At the same time, the heat of the supply part 20 is prevented from being discharged to the outside via the heat loss prevention part 75, thereby saving the time and cost required for heating the purification target material P.

As described above, according to the present invention, the purification operation of the organic light emitting device material can be performed simultaneously in the plurality of inner tubes 10 using one vacuum device 60 in common, thereby improving productivity and efficiency .

Also, since the plurality of internal pipes 10 can commonly use the vacuum device 60, the installation cost and the maintenance cost can be reduced.

FIG. 7 is a cross-sectional view schematically showing the essential structure of an organic compound purifying apparatus according to a third embodiment of the present invention. Referring to FIG. 7, a buffer unit 210 is further included in the inner tube 10 of the organic compound purification apparatus 200 according to the third embodiment of the present invention. The buffer unit 210 is disposed between the supplying unit 20 and the collecting unit 30. In this buffer unit 210, impurities in the purification target substance P that have been sublimated or vaporized in the supply unit 20 are collected. In the third embodiment, impurities having a large molecular weight among the impurities of the substance to be purified P are dropped and collected in the buffer section 210.

The buffer unit 210 is not provided with a separate heating device 40 and has an internal space in which impurities are collected between the supplying unit 20 and the collecting unit 30.

When the impurities are loaded on the buffer unit 210 at a predetermined value or more, the impurities may be discharged to the outside of the buffer unit 210 through the discharge holes provided in the buffer unit 210.

FIG. 8 is a cross-sectional view schematically showing the essential structure of an organic compound purifying apparatus according to a fourth embodiment of the present invention. Referring to FIG. 8, the apparatus for purifying organic compounds 300 according to the fourth embodiment of the present invention further includes a carrier gas supply unit 310. The transport gas supply unit 310 supplies a transport gas for moving the sublimated or vaporized purified material P toward the vacuum apparatus 60 side.

An inert gas, such as nitrogen gas, may be applied as the carrier gas, and the carrier gas supply unit 310 may supply the carrier gas from the drive unit side to the vacuum device 60 side so that the sublimated or vaporized purified substance P, To the vacuum device (60) side.

According to the organic compound purification apparatus 300 of the fourth embodiment having the transport gas supply unit 310, the temperature of each part of the heating apparatus 40 and the flow rate of the transport gas are controlled, It is possible to adjust the position of the collection unit 30.

More specifically, an experiment on the effect of the organic compound refining apparatus was conducted by introducing the heat flow inducing unit 70 into the supplying unit 20. In order to examine the effect of the organic compound purifying apparatus before and after the introduction of the heat conduction inducing unit 70, experiments were conducted using the organic compound purifying apparatuses of the first and second embodiments.

1. Experimental method.

1), as shown in Fig. 1, in a facility in which one vacuum device 60 is connected to one heat purification part 5 to which the heat flow inducing part 70 is not connected, 10 g of the organic optoelectronic device material was supplied to the supply portion 20. The collection unit 30 is set to an appropriate collection temperature and the buffer unit 75 is set at 320 ° C. at 330 ° C. supply unit 20. It is confirmed by visually checking that the purified material has flowed about 80 to 90% And the purification time was 15 hours.

2) Experimental Example 1: The organic compound purifying apparatus 300 shown in FIG. 8 was prepared by introducing the heat flow inducing unit 70 into the supply unit 20 used in the comparative example, and this was experimented by the same method as the comparative example , The temperature of the heat flow inducing part was 330 ° C., and the purification was completed by confirming that about 80 to 90% of the purified material was transferred by visual inspection, and the purification time was 10.5 hours.

3) Experimental Example 2: Experimental Example 1 was retested.

In order to compare with Experimental Examples 1 and 2, in the above experiment, when the purification is completed, the substances in the supply unit 20 and the collecting unit 30 are recovered, The remaining purifying material was weighed, and the purity of the collected material was measured in the collecting part 30.

The results of Experimental Examples 1, 2 and Comparative Examples are shown in the following Table 1, and the purification rate was calculated using the following Formula 1.

division flow Refining time Purification rate Speed ratio yield Comparative Example 10g 15hr 0.56 g / hr - 74% Experimental Example 1 10g 10.5 hr 0.78 g / hr 1.39 times 73% Experimental Example 2 10g 11.2 hr 0.80 g / hr 1.43 times 79%

[Formula 1] Purification rate = [mass of refined substance (10 g) supplied to the supply part - amount remaining in the supply part (g)] / refining time (hr)

Referring to Table 1, it can be seen that the purification rate was 1.5 times faster and the yield was improved in all of Examples 1 and 2 as compared with Comparative Example.

Therefore, it was confirmed through the results shown in Table 1 that a high-purity material can be rapidly obtained at a high yield by using the organic compound purifying apparatus according to an embodiment of the present invention.

The apparatus for purifying an organic compound according to an embodiment of the present invention is characterized in that the feed section is operated together with the heating section 44 to heat the purification target material P, Can be sublimated or vaporized more quickly and efficiently, and the purification rate can be increased. Further, the apparatus for purifying an organic compound according to an embodiment of the present invention not only can purify a greater amount of the purifying substance P in the same time, but also purifies the purifying substance P in a stable condition, Purity and yield can be improved.

The apparatus for purifying an organic compound according to another embodiment of the present invention may be configured to use a heat flow inducing unit 70 to push the purifying target substance P vaporized or sublimated in the supplying unit 20 toward the collecting unit 30, And the heat transfer efficiency of the purification target substance P can be increased by inducing the purification target substance P to be sublimated or vaporized and moved toward the collection unit 30. [

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the scope of the invention as defined by the appended claims. will be. Accordingly, the true scope of the present invention should be determined by the following claims.

1, 100, 200, 300: organic compound refining apparatus 5: heating and refining unit
10: inner tube 20:
22: discharge part 24: work part
30: collecting unit 32: first collecting unit
34: second collecting unit 36: third collecting unit
38: fourth collecting unit 39: fifth collecting unit
40: heating device 41: heating body
42: heating hot wire 44:
50: collection part heating part 52: first heating part
54: second heating part 56: third heating part
58: fourth heating part 59: fifth heating part
60: Vacuum device 65:
67: channel member 70:
75: Heat loss prevention part 77: Heat loss prevention body
78: heat loss prevention heat line 80:
85: partition member 90: connection pipe
95: connection bracket 97: thermostatic heat supply device
210: buffer unit 310: transport gas supply unit
P: substance to be purified

Claims (12)

An inner tube having a supply part to which a substance to be purified is supplied and a collecting part to be sublimated or liquefied, the substance to be purified being moved from the supply part;
A heating device for heating a substance to be purified provided in the inner tube;
A vacuum device for evacuating the inner tube; And
And a heat flow inducing unit for guiding a heat flow from the internal tube to the vacuum apparatus. The method according to claim 1,
Wherein the heat flow inducing unit is disposed in a direction different from the direction in which the substance to be purified is moved. 3. The method of claim 2,
Wherein the heat flow inducing unit is disposed in a direction perpendicular to a direction in which the substance to be purified is moved. The method according to claim 1,
And a heat loss prevention part disposed at one side of the supply part to prevent heat loss of the internal tube from the internal tube. 5. The method of claim 4,
And a buffer part disposed between the supply part and the collecting part, for collecting impurities from the purification target material sublimated or vaporized in the supply part. The method according to claim 4 or 5,
Wherein the heat flow inducing unit is disposed between the heat loss preventing unit and the supplying unit. The method according to claim 1,
Wherein the heat flow inducing unit is any one of an object formed of a heat ray, a heating coil, and a thermometer. 8. The method of claim 7,
Wherein the object molded with the thermoforming material is shaped into at least one of a linear shape, a circular shape, a cylindrical shape, and a polygonal shape. 8. The method of claim 7,
Wherein the inner tube and the heating device form a heat-
Wherein the heat flow inducing unit is temperature-regulated by a temperature-regulating heat supply unit provided outside the heat-refining unit. 8. The method of claim 7,
Wherein the heat flow inducing unit is temperature-regulated by the heating device. The method according to claim 1,
Wherein the purification target material is an organic compound for organic light emitting devices. 6. The method according to any one of claims 1 to 5,
Wherein a plurality of the inner tubes are provided, and a plurality of the inner tubes are connected to the vacuum apparatus around the vacuum apparatus.

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