Furnace for synthesizing graphite

Abstract

Provided is a furnace for synthesizing graphite. The furnace for synthesizing graphite according to the present invention comprises: a plurality of crucibles which are filled with raw material for synthesizing graphite; a heater for heating the raw material for synthesizing graphite filled in the crucibles to produce synthetic graphite; a crucible supply unit for supplying the crucibles into the heater; and a crucible discharge unit for discharging, to the outside, the crucibles filled with produced synthetic graphite.

Description

With artificial graphite

[0001] The present invention relates to an artificial graphite furnace.

[0002] Typically, the raw material for artificial graphite is green coke, a carbon material made by separating and heating coal tar, a byproduct of coal and petroleum.

[0003] The Acheson furnace method, a commercial furnace, has been commercially developed and is widely used as a process for manufacturing artificial graphite.

[0004] This commercial Acheson furnace is very large and requires a lot of energy, so it has very low efficiency, is difficult to use at ultra-high temperatures, and has the problem of taking a long time, at least several months, to convert graphitizing raw materials into artificial graphite.

[0005] In addition, the commercial Acheson furnace had a structure that made it difficult to continuously load and discharge graphitizing raw materials in batches, so there was a problem in that tests under various conditions could not be conducted.

[0006] To overcome these shortcomings, a continuous vertical artificial graphitization furnace is proposed.

[0007] A continuous vertical artificial graphite furnace is installed vertically, graphitizing raw materials are dropped from the top, heated internally, and artificial graphite is continuously discharged from the bottom.

[0008] That is, by stacking artificial graphite raw materials from the bottom to the top in the furnace, heating the furnace, and discharging artificial graphite from the lower exhaust port, and injecting the same amount of graphite raw materials into the upper portion, a certain amount of raw materials always remains in the furnace and is artificially graphitized.

[0009] In this type of vertical graphitization, the raw material being graphitized from the green coke on the wall of the carbon material artificial graphitization furnace descends, causing friction and damaging the wall depending on the properties of the raw material.

[0010] Therefore, when manufacturing artificial graphite in a continuous vertical artificial graphitization furnace, there is an urgent need to develop an artificial graphitization furnace that can efficiently graphitize graphitizable raw materials without damaging the artificial graphitization furnace and while minimizing energy consumption.

[0011] The present invention provides an artificial graphite furnace capable of continuously loading a crucible loaded with a graphitizing raw material and discharging a crucible in which artificial graphite is produced when manufacturing artificial graphite in a continuous vertical artificial graphite furnace, and capable of efficiently converting a graphitizing raw material into artificial graphite without damaging the artificial graphite furnace.

[0012] According to one embodiment of the present invention, an artificial graphite furnace is a vertical artificial graphite furnace for producing artificial graphite, which may include a plurality of crucibles into which graphitization raw materials are loaded, and a heater in which the plurality of crucibles are stacked vertically inside and heat the graphitization raw materials loaded in the crucibles to produce artificial graphite.

[0013] In addition, the artificial graphite may include a crucible supply unit disposed at the bottom of the heater and for supplying a crucible from the outside to the inside of the heater, and a crucible discharge unit disposed at the top of the heater and for discharging a crucible in which artificial graphite is produced to the outside of the heater.

[0014] The artificial graphite may include at least one crucible cooling unit disposed between the heater and the crucible discharge unit and used to cool the crucible discharged to the crucible discharge unit to a temperature below a set temperature.

[0015] The crucible may have a square or cylindrical shape.

[0016] The heater may have a rectangular or circular tube shape.

[0017] The area surrounding the heater can be filled with an inert gas to isolate it from its surroundings.

[0018] The heater may have a main passage for passing vertically stacked crucibles therein.

[0019] An upper electrode for conducting electricity to the upper part of the heater may be placed on the upper part of the heater, and a lower electrode for conducting electricity to the lower part of the heater may be placed on the lower part of the heater.

[0020] An upper connection part may be installed at the upper end of the heater to connect the upper end of the heater and the upper electrode, and a lower connection part may be installed at the lower end of the heater to connect the lower end of the heater and the lower electrode.

[0021] The upper connection and the lower connection may have a cross-sectional area greater than the cross-sectional area of ​​the heater.

[0022] The cross-sectional areas of the upper and lower connections can be set to be 1.5 times or more than the cross-sectional area of ​​the heater.

[0023] The upper connecting portion and the lower connecting portion can be connected to each other by a connecting member.

[0024] Insulating material may be placed on the outside of the heater to insulate the heater.

[0025] The insulation may be made of carbon black material.

[0026] The space created between the inner surface of the heater and the outer surface of the crucible in the main passage can be filled with an inert gas.

[0027] The crucible supply section may include a supply pipe arranged in the length direction of the heater at the bottom of the heater and for supplying crucibles to the main passage, and a first transfer line arranged in a direction perpendicular to the supply pipe and for transferring crucibles loaded with graphitizing raw materials from the outside to the supply pipe.

[0028] The crucible supply unit may include at least one first clean room disposed between one end of the supply pipe and the first transfer line, and filled with an inert gas and removing air mixed with the crucible.

[0029] A first gate valve for opening and closing the first clean room may be installed in the first clean room.

[0030] A first horizontal transfer device may be installed on one side of the supply pipe, which is arranged horizontally with the first transfer line, and transfers the crucible transferred to the first clean room to the lower part of the supply pipe.

[0031] At the bottom of the supply pipe, a first horizontal transfer device and a vertical transfer device may be installed in a vertical direction, and a vertical transfer device may be installed to vertically push up the crucible transferred to the lower part of the supply pipe.

[0032] A crucible support may be installed on one side of the supply pipe to support the crucibles stacked in the main passage of the heater.

[0033] The crucible discharge unit may include a discharge pipe arranged in the longitudinal direction of the heater at the top of the heater for discharging the crucible from the main passage to the top of the heater, and a second transfer line arranged in a vertical direction with respect to the discharge pipe for transferring the crucible discharged through the discharge pipe to the outside of the discharge pipe.

[0034] The crucible discharge unit may include a second clean room disposed between the discharge pipe and the second transfer line, and filled with an inert gas and removing air entrained with the crucible.

[0035] A second gate valve may be installed in the second clean room to open and close the second clean room.

[0036] The discharge pipe may be equipped with a detection sensor to detect when the crucible reaches the upper end of the discharge pipe.

[0037] A second horizontal transfer device may be installed on one side of the discharge pipe, which is arranged horizontally with the second transfer line, to transfer the crucible transferred to the upper part of the discharge pipe to the second clean room.

[0038] An expansion compensator and a contraction compensator may be installed in the discharge pipe to compensate for expansion and contraction of the heater due to thermal expansion of the heater.

[0039] The crucible cooling unit may include a primary cooling device disposed between the heater and the upper electrode for primarily cooling the crucible discharged through the discharge pipe to a first set temperature.

[0040] A secondary cooling device may be placed on top of the primary cooling device to secondarily cool the crucible that has passed through the primary cooling device to a second set temperature.

[0041] On the upper part of the secondary cooling device, a tertiary cooling device can be arranged to tertiarily cool the crucible that has passed through the secondary cooling device to a third set temperature.

[0042] The inert gas filled in the main passage can be injected from the lower part of the vertical transport device, passed through the heater, and then discharged to the upper electrode.

[0043] According to an embodiment of the present invention, when manufacturing artificial graphite, it is possible to continuously charge a crucible in which a graphitizing raw material is charged, and to discharge the crucible in which artificial graphite is produced, and to efficiently convert the graphitizing raw material into artificial graphite without damaging the artificial graphitization furnace.

[0044] Therefore, when manufacturing artificial graphite in a continuous vertical artificial graphitization furnace, energy consumption can be minimized.

[0045] FIG. 1 is a schematic cross-sectional view of an artificial graphite according to one embodiment of the present invention.

[0046] Figure 2 is a schematic perspective view of an artificial graphite furnace according to one embodiment of the present invention.

[0047] Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described so that those skilled in the art can easily implement them. As will be readily apparent to those skilled in the art, the embodiments described below may be modified in various ways without departing from the spirit and scope of the present invention. Wherever possible, identical or similar parts are indicated in the drawings using the same reference numerals.

[0048] The terminology used below is for the purpose of describing specific embodiments only and is not intended to limit the present invention. As used herein, the singular forms "singular" and "comprising" include plural forms as well, unless the context clearly dictates otherwise. The word "comprising" as used herein specifies a particular feature, region, integer, step, operation, element, and / or component, but does not exclude the presence or addition of other specific features, regions, integers, steps, operations, elements, components, and / or groups.

[0049] All terms, including technical and scientific terms, used below have the same meaning as commonly understood by those of ordinary skill in the technical field to which this invention pertains. Terms defined in the dictionary are further interpreted to have meanings consistent with the relevant technical literature and the present disclosure, and are not to be construed as ideal or overly formal unless otherwise defined.

[0050] FIG. 1 is a schematic partial cutaway diagram of an artificial graphite furnace according to one embodiment of the present invention, and FIG. 2 is a schematic perspective view of an artificial graphite furnace according to one embodiment of the present invention.

[0051] Referring to FIGS. 1 and 2, an artificial graphitization furnace according to one embodiment of the present invention is for efficiently artificially graphitizing a graphitizing raw material without damaging the artificial graphitization furnace when manufacturing artificial graphite in a continuous vertical artificial graphitization furnace.

[0052] The artificial graphite furnace may include a crucible (10), a heater (20), a crucible supply section (30), a crucible discharge section (40), and a crucible cooling section (50).

[0053] A plurality of crucibles (10) are provided, and graphitizing raw materials such as green coke for manufacturing artificial graphite can be loaded inside.

[0054] In addition, the heater (20) has a plurality of crucibles (10) stacked vertically (Y direction in FIG. 1) inside, and can heat the graphitizing raw material loaded in the crucible (10) to a set temperature to produce artificial graphite.

[0055] The crucible supply unit (30) is placed at the bottom of the heater (20) and can sequentially supply crucibles (10) from the outside to the inside of the heater (20).

[0056] In addition, the crucible discharge unit (40) is placed on the upper part of the heater (20), and the crucible (10) in which artificial graphite is produced by the heater (20) can be sequentially discharged to the outside of the heater (20).

[0057] The crucible cooling unit (50) is arranged at least once between the upper portion of the heater (20) and the crucible discharge unit (40), and can cool the crucible (10) discharged to the crucible discharge unit (40) to a set temperature (e.g., 200°C) or lower.

[0058] The crucible (10) is loaded with graphitizing raw materials such as green coke, which are the heating target of the heater (20), and can be maintained at a temperature of, for example, 2900°C to 3100°C by the heater (20).

[0059] For this purpose, the crucible (10) may have a shape such as a square cylinder or a cylindrical shape into which graphitization raw material can be loaded.

[0060] The heater (20) may be installed in a vertical direction (Y direction in FIG. 1) on the ground or an installation surface, etc., and may be formed in the shape of a rectangular tube or a circular tube to heat and graphitize the graphitizing raw material loaded into a crucible (10) that is supplied and loaded vertically therein by radiant heat.

[0061] Since the heater (20) generates heat through electrical resistance, it must be isolated from the surroundings or protected with a material having very high resistance. If the heater (20) is isolated from the surroundings, the area around the heater (20) may be filled with an inert gas, such as nitrogen or argon gas.

[0062] Additionally, the heater (20) may have a main passage (21) for passing crucibles that are vertically loaded inside it in a vertical direction (Y direction in FIG. 1).

[0063] An upper electrode (22) for conducting electricity to the upper part of the heater (20) may be installed on the upper part of the heater (20), and a lower electrode (23) for conducting electricity to the lower part of the heater (20) may be installed on the lower part of the heater (20).

[0064] An upper connecting portion (25) for connecting the upper portion of the heater (20) and the upper electrode (22) may be installed at the upper portion of the heater (20), and a lower connecting portion (27) for connecting the lower portion of the heater (20) and the lower electrode (23) may be installed at the lower portion of the heater (20).

[0065] The upper connecting portion (25) and the lower connecting portion (27) may have a cross-sectional area larger than the cross-sectional area of ​​the heater (20) so that most of the resistance heat can be generated in the heater (20).

[0066] Additionally, the upper connecting portion (25) and the lower connecting portion (27) can be connected to each other by a connecting member (29).

[0067] Therefore, the cross-sectional areas of the upper connecting portion (25) and the lower connecting portion (27) can be set to at least 1.5 times the cross-sectional area of ​​the heater (20) so that resistance heat can be effectively generated in the heater (20).

[0068] Additionally, an insulating material (60) for insulating the heater (20) may be filled on the outside of the heater (20), that is, between the outside surface of the heater (20) and the connecting member (29).

[0069] The insulation material (60) can be made of a material such as carbon black that can sufficiently withstand high temperatures.

[0070] In the main passage (21), a space is created between the inner surface of the heater (20) and the outer surface of the crucible (10), and this space is filled with an inert gas such as nitrogen or argon gas. This is to discharge foreign substances contained in the coke charged into the crucible (10) when they are gasified at a high temperature by combining with the inert gas in the space.

[0071] The crucible supply unit (30) may include a supply pipe (31), a first transfer line (33), and a first clean room (35).

[0072] The supply pipe (31) is arranged in the longitudinal direction of the heater (20) (Y direction in FIG. 1) at the bottom of the heater (20) and can supply the crucible (10) to the main passage (21) of the heater (20).

[0073] In addition, the first transport line (33) is arranged in a vertical direction (X direction in Fig. 1) with respect to the supply pipe (31), and can horizontally transport a crucible (10) in which graphitization raw material is loaded from the outside to the supply pipe (31).

[0074] In addition, at least one first clean room (35) is arranged between the lower end of the supply pipe (31) and the first transfer line (33), and when the crucible (10) is transferred by the first transfer line (33), the air mixed with the crucible (10) can be removed and filled with an inert gas.

[0075] A first gate valve (37) for opening and closing the first clean room (35) may be installed at one end of the first clean room (35).

[0076] In addition, a first horizontal transfer device (38) may be installed on one side of the lower portion of the supply pipe (31) to transfer the crucible (10) transferred to the first clean room (35) to the lower portion of the supply pipe (31) and to be arranged horizontally with the first transfer line (33).

[0077] At the lower end of the supply pipe (31), a first horizontal transport device (38) may be installed in a vertical direction (Y direction in FIG. 1), and a vertical transport device (39) may be installed to push up the crucible (10) transported to the lower end of the supply pipe (31) by the first horizontal transport device (38) in a vertical direction (Y direction in FIG. 1).

[0078] In addition, a crucible support member (70) for supporting a crucible (10) stacked on the main passage (21) of the heater (20) can be installed on one side of the supply pipe (31).

[0079] Additionally, the crucible discharge unit (40) may include a discharge pipe (41), a second transfer line (43), and a second clean room (45).

[0080] The discharge pipe (41) is arranged in the longitudinal direction of the heater (20) (Y direction in FIG. 1) at the top of the heater (20), and can discharge the crucible (10) from the main passage (21) of the heater (20) to the top of the heater (20).

[0081] In addition, the second transport line (43) is arranged in a vertical direction (X direction in FIG. 1) with respect to the discharge pipe (41), and can horizontally transport the crucible (10) discharged through the discharge pipe (41) to the outside of the discharge pipe (41).

[0082] The second clean room (45) is arranged between the upper part of the discharge pipe (41) and the second transfer line (43), and may include a second clean room (45) filled with an inert gas to remove air mixed with the crucible (10) when the crucible (10) is transferred through the second transfer line (43).

[0083] A detection sensor (not shown) may be installed in the discharge pipe (41) to detect when the crucible (10) discharged through the discharge pipe (41) reaches the upper end of the discharge pipe (41).

[0084] A second gate valve (47) for opening and closing the second clean room (45) may be installed at one end of the second clean room (45).

[0085] A second horizontal transfer device (48) may be installed on one side of the upper portion of the discharge pipe (41) to be arranged horizontally with the second transfer line (43) and to transfer the crucible (10) transferred to the upper portion of the discharge pipe (41) to the second clean room (45).

[0086] In addition, an expansion compensator (80) and a contraction compensator (81) may be installed at the lower and upper portions of the discharge pipe (41), respectively, to compensate for expansion and contraction of the heater (20) due to thermal expansion of the heater (20).

[0087] And, it may include a crucible cooling unit (50) for cooling the crucible (10) disposed at least one in the discharge pipe (41) and discharged through the discharge pipe (40) to a set temperature (e.g., 200°C) or lower.

[0088] The crucible cooling unit (50) may include a primary cooling device (51), a secondary cooling device (53), and a tertiary cooling device (55).

[0089] The primary cooling device (51) is arranged between the upper part of the heater (20) and the upper electrode (22) on the outside of the discharge pipe (41), and may be formed of a water cooling jacket or the like to primarily cool the crucible (10) discharged through the discharge pipe (41) to a first set temperature.

[0090] The secondary cooling device (53) is arranged on the upper side of the primary cooling device (51) and inside the upper electrode (22), and may be formed of a water cooling jacket or the like to secondary cool the crucible (10) that has passed through the primary cooling device (51) to a second set temperature.

[0091] In addition, the tertiary cooling device (55) is placed above the secondary cooling device (53) and may be formed of a water cooling jacket or the like to tertiarily cool the crucible (10) that has passed through the secondary cooling device (53) to a third set temperature.

[0092] In the main passage (21), an inert gas filled in the space between the inner surface of the heater (20) and the outer surface of the crucible (10) is injected from the lower part of the vertical transport device (39) located at the lower part of the artificial graphite furnace, passes through the heater (20), is first discharged from the upper electrode (22), and the remaining gas is discharged through the discharge port (not shown) at the upper part of the discharge pipe (41).

[0093] And, the artificial graphite may be arranged in a grid shape at the lower part and supported by base frames (100) installed on the ground or an installation surface.

[0094] Additionally, the second transfer line (43), the second clean room (45) and the second horizontal transfer device (48) can be supported by a plurality of support frames (110) connected to the upper connecting portion (25).

[0095] Hereinafter, with reference to FIGS. 1 and 2, the operation of an artificial graphite according to one embodiment of the present invention will be described.

[0096] First, a crucible (10) loaded with graphitization raw material is placed on the first transfer line (33) from the outside, then transferred along the first transfer line (33), the first gate valve (37) is opened, and transferred into the first clean room (35) filled with an inert gas, and then the first gate valve (37) is closed.

[0097] In the first clean room (35), the air mixed in with the crucible (10) is removed using a quenching device (not shown), etc., and when the air mixed in with the crucible (10) in the first clean room (35) is completely removed, the crucible (10) is transferred to the lower part of the supply pipe (31) by the first horizontal transfer device (38) and then pushed up toward the main passage (21) of the heater (20) by the vertical transfer device (39).

[0098] In addition, the crucible (10) pushed up by the vertical transport device (39) pushes up the lowest crucible (10) among the crucibles (10) stacked in the main passage (21) of the heater (20), and the lowest crucible (10) is transported in the vertical direction (Y direction in FIG. 1) to the position where it was previously located, and then stays in the main passage (21) for a set time.

[0099] At this time, the lower side of the stacked crucible (10) is held by the crucible support member (70) installed on one side of the supply pipe (31) for a certain period of time.

[0100] After the set time, the next crucible (10) supplied through the crucible supply unit (30) is pushed up in the main passage (21) by the set length and moves sequentially from the bottom to the top of the main passage (21).

[0101] In this way, the crucible (10) moves sequentially upward from the bottom to the top of the main passage (21) of the heater (20) at set time intervals, so that the graphitized raw material loaded in the crucible (10) can be maintained at a high temperature (e.g., 2900°C to 3100°C) higher than the set temperature due to the heat generation of the heater (20) and can be produced as artificial graphite.

[0102] And, when the crucible (10) in which artificial graphite is produced is discharged from the upper part of the heater (20) to the discharge pipe (41) and reaches the upper part of the discharge pipe (41), a detection sensor (not shown) detects this and a second horizontal transport device (48) moves the crucible (10) to the second clean room (45).

[0103] At this time, the second gate valve (47) of the second clean room (45) is opened before the crucible (10) is moved into the second clean room (45), and is closed after the crucible (10) is moved into the second clean room (45).

[0104] In addition, in the second clean room (45), the air mixed in with the crucible (10) is removed using a quenching facility (not shown), etc., and when the air mixed in with the crucible (10) in the second clean room (45) is completely removed, the crucible (10) can be transported to the outside along the second transport line (43).

[0105] Meanwhile, when the crucible (10) is discharged through the discharge pipe (41), the crucible (10) can be sequentially cooled to a set temperature by the crucible cooling unit (50).

[0106] The crucible (10) discharged through the discharge pipe (41) in the primary cooling device (51) can be first cooled to a first set temperature by a water cooling jacket or the like, and the crucible (10) that has passed through the primary cooling device (51) can be secondarily cooled to a second set temperature by a water cooling jacket or the like together with the upper electrode (22) in the secondary cooling device (53).

[0107] In addition, the crucible (10) that has passed through the secondary cooling device (53) in the tertiary cooling device (55) can be tertiarily cooled to a third set temperature by a water cooling jacket or the like.

[0108] And, inert gas is injected from the lower part of the vertical transport device (39) located at the lower part of the artificial graphite, passes through the heater (20), is first discharged from the upper electrode (22), and the remaining gas is discharged through the discharge port (not shown) at the upper part of the discharge pipe (41).

[0109] Additionally, an inert gas is filled in the space between the inner surface of the heater (20) and the outer surface of the crucible (10) in the main passage (21), and an inert gas is also filled around the heater (20) to isolate the heater (20).

[0110] In this way, when manufacturing artificial graphite in a continuous vertical artificial graphitization furnace, it is possible to continuously charge a crucible loaded with graphitizing raw materials and discharge a crucible in which artificial graphite is produced, and to efficiently graphitize the graphitizing raw materials without damaging the artificial graphitization furnace.

[0111] Although the present disclosure has been described through preferred embodiments as described above, it will be readily understood by those skilled in the art that the present invention is not limited thereto and that various modifications and variations are possible without departing from the scope of the claims set forth below.

[0112] (Explanation of symbols)

[0113] 10: The Crucible

[0114] 20: Heater

[0115] 30: Crucible Supply Unit

[0116] 40: Crucible discharge port

Claims

1. In a vertical artificial graphite furnace for manufacturing artificial graphite, Multiple crucibles with graphitizing raw materials inside, A heater for heating graphitizing raw materials loaded in the crucibles to produce artificial graphite, wherein a plurality of crucibles are stacked vertically inside. A crucible supply unit arranged at the bottom of the heater and supplying the crucible from the outside to the inside of the heater, and A crucible discharge unit is placed on the upper part of the heater and discharges the crucible in which the artificial graphite is produced to the outside of the heater. With artificial graphite containing .

2. In paragraph 1, An artificial graphitization furnace, comprising at least one crucible cooling unit disposed between the heater and the crucible discharge unit and configured to cool the crucible discharged through the crucible discharge unit to a set temperature or lower.

3. In paragraph 2, The above crucible is an artificial graphite furnace having a square or cylindrical shape.

4. In paragraph 3, The above heater is an artificial graphite heater having a rectangular or circular tube shape.

5. In paragraph 4, The surroundings of the above heater are filled with an inert gas and are isolated from the surroundings, making it an artificial graphite furnace.

6. In any one of paragraphs 1 to 5, The above heater is an artificial graphite furnace having a main passage for passing vertically stacked crucibles vertically inside it.

7. In paragraph 6, An upper electrode for conducting electricity to the upper part of the heater is placed on the upper part of the heater. An artificial graphite furnace in which a lower electrode for conducting electricity to the lower part of the heater is placed at the lower part of the heater.

8. In paragraph 7, An upper connecting portion is installed at the upper part of the heater to connect the upper part of the heater and the upper electrode. An artificial graphite furnace, wherein a lower connecting portion is installed at the lower end of the heater to connect the lower end of the heater and the lower electrode.

9. In paragraph 8, The upper connecting portion and the lower connecting portion are made of artificial graphite, having a cross-sectional area larger than the cross-sectional area of the heater.

10. In paragraph 9, The cross-sectional areas of the upper connecting portion and the lower connecting portion are set to be 1.5 times or more than the cross-sectional area of the heater, which is an artificial graphite.

11. In paragraph 8, The upper connecting portion and the lower connecting portion are connected to each other by a connecting member, which is an artificial graphite.

12. In paragraph 11, An artificial graphite heater, in which an insulating material is placed on the outside of the heater to insulate the heater.

13. In paragraph 12, The above insulation material is made of carbon black, an artificial graphite.

14. In paragraph 6, An artificial graphitization furnace, wherein the space created between the inner surface of the heater and the outer surface of the crucible in the main passage is filled with an inert gas.

15. In paragraph 7, The above crucible supply unit is, A supply pipe arranged in the length direction of the heater at the bottom of the heater and for supplying the crucible to the main passage, and An artificial graphitization furnace, comprising a first transfer line arranged in a vertical direction with respect to the supply pipe and for transferring a crucible loaded with graphitization raw material from the outside to the supply pipe.

16. In paragraph 15, The above crucible supply unit is, An artificial graphitization furnace, comprising at least one clean room disposed between one end of the supply pipe and the first transfer line, the first clean room being filled with an inert gas and removing air mixed with the crucible.

17. In paragraph 16, An artificial graphite furnace in which a first gate valve for opening and closing the first clean room is installed in the first clean room.

18. In paragraph 17, An artificial graphitization furnace, wherein a first horizontal transfer device is installed on one side of the above supply pipe and is arranged horizontally with the first transfer line, and for transferring the crucible transferred to the first clean room to the lower part of the supply pipe.

19. In Article 18, An artificial graphitization furnace, wherein a vertical transport device is installed at the lower end of the above supply pipe in a vertical direction with respect to the first horizontal transport device, and for vertically pushing up the crucible transported to the lower end of the above supply pipe.

20. In paragraph 6, An artificial graphite furnace, wherein a crucible support member is installed on one side of the above supply pipe to support a crucible stacked in the main passage of the above heater.

21. In paragraph 7, The above crucible discharge part is, A discharge pipe arranged in the longitudinal direction of the heater on the upper part of the heater and for discharging the crucible from the main passage to the upper part of the heater, and An artificial graphitization furnace, comprising a second transfer line arranged in a vertical direction with respect to the discharge pipe and for transferring the crucible discharged through the discharge pipe to the outside of the discharge pipe.

22. In paragraph 21, The above crucible discharge part is, An artificial graphitization furnace, comprising a second clean room disposed between the discharge pipe and the second transfer line, the second clean room being filled with an inert gas and removing air mixed with the crucible.

23. In paragraph 22, In the above second clean room, a second gate valve for opening and closing the above second clean room is installed, which is an artificial graphite furnace.

24. In paragraph 23, An artificial graphite furnace, wherein a detection sensor is installed in the discharge pipe to detect when the crucible reaches the upper end of the discharge pipe.

25. In paragraph 24, An artificial graphite furnace, wherein a second horizontal transfer device is installed on one side of the discharge pipe and is arranged horizontally with the second transfer line, and for transferring the crucible transferred to the upper part of the discharge pipe to the second clean room.

26. In paragraph 21, An artificial graphite furnace, wherein an elongation compensator and a contraction compensator are respectively installed in the above discharge pipe to compensate for elongation and contraction of the heater due to thermal expansion of the heater.

27. In paragraph 21, The above crucible cooling unit is, An artificial graphitization furnace, comprising a primary cooling device disposed between the heater and the upper electrode and configured to primarily cool the crucible discharged through the discharge pipe to a first set temperature.

28. In paragraph 27, An artificial graphitization furnace, wherein a secondary cooling device is arranged on the upper part of the primary cooling device for re-cooling the crucible that has passed through the primary cooling device to a second set temperature.

29. In paragraph 28, An artificial graphite furnace, wherein a tertiary cooling device is arranged on the upper part of the secondary cooling device for cooling the crucible that has passed through the secondary cooling device to a third set temperature.

30. In paragraph 19, The inert gas filled in the above main passage is injected from the lower part of the vertical transport device, passes through the heater, and is discharged to the upper electrode, which is an artificial graphitization furnace.

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