KR101782142B1 - Apparatus for heat treatment using rotatable transfer roller and belt in hybrid type of carbon fiber activation heat treatment system - Google Patents

Abstract

A firing apparatus capable of performing a heat treatment process quickly is disclosed. The apparatus includes a main body having a predetermined length of internal passages from an inlet of a firing chamber for carbonizing or activating carbon fibers to an outlet of a cooling chamber for cooling the carbonized or activated carbon fibers by applying a high temperature, An inlet belt which moves in the direction from the inlet to the outlet by the frictional force is arranged on the upper part, at least 60% of the ceramic is composed of ceramic, and the conveying roller which rotates by itself and the conveying roller And an upper heater or a lower heater respectively installed on the upper portion or the lower portion. The conveying roller constitutes a conveying roller group composed of a plurality of rollers in each chamber. One end of the conveying rollers constituting the conveying roller group extends to the outside of the inner passage, the extended portion is connected to at least one motor, The motor is connected to a rotating rod provided in the longitudinal direction, and the rotating rod is connected to at least one shaft corresponding to each chamber of the firing device. When power is connected to the motor, the rotation of the motor is transmitted to the rotating rod through the miter gear When the rotation bar rotates and the shaft rotates, the conveying roller connected to the shaft rotates. According to the present invention, the inlet belt can be moved by the frictional force between the independently rotating roller and the inlet belt.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a hybrid type carbon fiber activation heat treatment system, and more particularly, to a high temperature heat treatment apparatus using a transferring roller and a belt rotatable in a hybrid type carbon fiber activation heat treatment system.

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to the carbonization and activation process of carbon fibers, and more particularly, to performing a high-temperature heat treatment process more quickly and easily through a self-rotatable transfer roller.

Generally, ceramic electronic components using ceramics such as ceramic capacitors, capacitors, varistors, ferrites, and piezo-electric bodies and other fired products are manufactured by molding raw materials for firing products, And then firing the formed body at a high temperature.

Effective removal of the binder used during molding during the firing process of the fired product is regarded as an important process variable to control the quality characteristics and the removal of such a binder is carried out in an independent binder removal process or in the firing temperature rise profile Such a heat treatment process is performed in a firing apparatus. Korean Utility Model Publication No. 2006-0095371 discloses a heat treatment system for a semiconductor device. And a cooling unit for uniformly cooling the amorphous silicon thin film formed on the surface of the glass substrate used for the flat panel display panel or for cooling the doped amorphous silicon thin film to a predetermined temperature so as not to be deformed to a predetermined temperature after the heat treatment, And a heating process is performed in which the heating temperature is raised or cooled stepwise to the heat treatment temperature to perform heat treatment.

A heat treatment process in which a carbon fiber is carbonized and activated is a process of carving out defects of a fiber. The fiber to be heat treated was placed on a mesh or net type belt in a carbonization furnace, and the belt on which the fiber was placed was pulled by a physical force to heat treat the fiber. Moving the object to be heat-treated at high temperatures is a very difficult task. To move the fiber to be heat treated, the belt with the fiber placed on it is pulled, and the belt should not be damaged during this process. Thus, the belt had to be made strong and strong, and the belt thus made was very heavy and thick. Because the fibers were moved by a heavy and thick belt, the heat treatment process was very slow. In addition, in the process of pulling the belt, the belt itself often bends or breaks, and in many cases, the belt that has been stretched due to the high temperature of 1100 degrees or more is not reduced again.

There is a need for a technique for solving this problem and moving the heat treatment object faster and more stably to improve the speed of the overall carbonization and activation process.

Korean Patent Publication No. 2006-0095371 (Aug. 31, 2006)

SUMMARY OF THE INVENTION The present invention provides a carbonization and activation device capable of performing a heat treatment process more quickly.

According to an aspect of the present invention, the firing apparatus is provided with an internal passage having a predetermined length from an inlet of a firing chamber for carbonizing or activating carbon fibers to a carbonating chamber or an outlet of a cooling chamber for cooling the activated carbon fibers, An inlet belt disposed at the center of the main body and the inner passage and moving in the direction from the inlet to the outlet by the frictional force is disposed on the upper portion, at least 60% of the inlet roller is made of ceramic, And an upper heater or a lower heater disposed at an upper portion or a lower portion of the inner passage, respectively. Wherein the conveying rollers constitute a conveying roller group composed of a plurality of rollers divided into small chambers divided into partitions, one end of the conveying rollers constituting the conveying roller group extends to the outside of the inner passage, Wherein the motor is connected to a rotating rod provided in a longitudinal direction, the rotating rod is connected to at least one shaft provided corresponding to each chamber of the carbonization apparatus, and when power is connected to the motor, The rotation of the motor is transmitted to the rotation shaft through the miter gear, and when the rotation rod rotates to rotate the shaft, the transport roller connected to the shaft rotates.

According to the present invention, the inlet belt can be moved by the frictional force between the independently rotating rollers and the inlet belts.

According to the present invention, a fired product can be fired using a much lighter conveyance belt.

According to the present invention, since the moving speed of the roller can be varied, flexible operation is possible, and productivity is improved. In addition, the temperature profile or the supply gas may be variously set for each zone to create an independent atmosphere.

According to the present invention, there is no need for a muffle or the like between the heating element and the fired material, and the fired material is directly heated. By increasing the energy density, the heating time can be shortened and the energy efficiency can be maximized.

INDUSTRIAL APPLICABILITY According to the present invention, maintenance of the roller is simple, and the removal of dropped foreign matters and the safety of use are excellent. In addition, it is very efficient in the composition of the gas atmosphere (for example, nitrogen, oxygen hydrogen, etc.) necessary for firing the carbon fiber, and can be operated accurately and safely.

1 is a side view of a firing apparatus according to the present invention.
FIG. 2 is a view showing a device relating to the rotation of the conveying roller in the baking apparatus according to the present invention. FIG.
FIG. 3 is a detailed view illustrating one of activation periods of the firing apparatus according to the present invention.
4 is a front view of the apparatus relating to the rotation of the feed roller in the firing apparatus according to the present invention.
5 shows an example of the overall layout of the hybrid type activation heat treatment system according to the present invention.
FIG. 6 is an example of an air supply and exhaust procedure of the hybrid type activation heat treatment system according to the present invention.
FIG. 7 shows an example of carbonization and activation periods of the hybrid type activation heat treatment system according to the present invention.

Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Also, in order to clearly illustrate the present invention in the drawings, portions not related to the present invention are omitted, and the same or similar reference numerals denote the same or similar components.

The objects and effects of the present invention can be understood or clarified naturally by the following description, and the objects and effects of the present invention are not limited only by the following description.

The objects, features and advantages of the present invention will become more apparent from the following detailed description. In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The hybrid type activation heat treatment system is a system for manufacturing activated carbon fiber through carbonization and activation process, which are key processes of high temperature heat treatment during production process of carbon fiber.

The present invention provides a new type of heat treatment apparatus that combines the advantages of a continuous furnace roller with the advantages of a mesh belt. It is a hybrid method in which the rollers are aligned continuously like a floor and a light mesh is placed on it to rotate all the rollers and transport them quickly.

The individual rollers are driven independently to effectively transfer the products or trays on the rollers, and the temperature and gas atmosphere can be independently controlled for each section without limitation of length.

The system according to the present invention comprises a winder for charging and discharging carbon fibers, a nitrogen generator for generating an input gas, a thermal oxidizer for treating the generated by-product gas, and an emergency generator, To provide smooth and stable production.

FIG. 1 is a side view of a firing apparatus according to the present invention, FIG. 2 is a view showing a device relating to rotation of a feed roller in a firing apparatus according to the present invention, FIG. 3 is a cross- FIG. 4 is a front view of the apparatus relating to the rotation of the transport roller in the firing apparatus according to the present invention. FIG.

1 to 4, the firing apparatus 100 includes a main body 110, a feed roller 120, a motor 130, heaters 140 and 145, an exhaust unit 150 and a firing chamber 160 and a cooling chamber 170). The firing chamber 160 refers to a room for carbonizing or activating the carbon fibers by applying a high temperature, and the cooling chamber 170 is a room for cooling the heated carbon fibers.

The main body 110 is provided with an internal passage 112 having a predetermined length from an inlet to an outlet. A firing process is performed on the fired product in the internal passageway (112).

The feed roller 120 is provided at the center of the inner passage 112 and the inlet belt 122 is provided at an upper portion of the feed roller 120.

The conveying roller 120 is provided with a ceramic roller so as to withstand a high temperature. The ceramic roller may be composed of at least 60% ceramic, and the ceramic roller is resistant to high temperature and small in deformation. Since the carbon fiber product can be produced only through the carbonization or activation process of 1000 degrees or more, the conveyance roller 120 provided with the ceramic roller is suitable for producing the carbon fiber product.

When the fusing product (for example, carbon fiber) is placed on the inlet belt 122 and the feeding roller 120 is rotated, the inlet belt 122 moves from the inlet to the outlet by the rotational friction force by the feeding roller 120 . As the inlet belt 122 is continuously moved, the firing process is continuously performed.

For example, one end of the conveying roller 120 is connected to the motor 130, and the rotational force of the motor is transmitted to the conveying roller 120, so that the conveying roller 120 rotates itself. One end of the feed roller 120 may extend to the outside of the inner passage 112 and a portion extending to the outside of the inner passage 112 may be connected to the motor 130. In this case, there is an advantage that high temperature is not applied to the connection part.

The motor 130 is connected to a power source. The motor 130 is connected to the rotation bar 132 provided in the longitudinal direction of the firing device through a miter gear. When the motor 130 connected to the power source rotates, the rotation shaft 132 rotates together with the miter gear. A plurality of shafts 134 are connected to the rotation bar 132. When the rotation bar 132 rotates, the respective shafts 134 rotate together.

When the rotation bar 132 is sufficiently long, connecting all the rollers directly to one rotation bar may cause an incorrect operation, so that the plurality of shafts 134 are connected to the rotation bar 132, and preferably, And connects the plurality of shafts 134 to the rotation bar 132 so that at least one shaft 134 corresponds.

At least one conveying roller may be provided in each chamber (for example, a firing chamber or a cooling chamber) of the predetermined apparatus, and the plurality of conveying rollers may form one conveying roller group.

Alternatively, the plurality of conveying rollers may constitute one conveying roller group connected to the shaft through a chain, wherein one shaft can simultaneously rotate one conveying roller group. As one shaft rotates one conveying roller group, the conveying roller rotates independently. Accordingly, conveying rollers can be provided for each room of the sintering apparatus, and even if the temperatures of the respective rooms of the sintering apparatus are different from each other, a plurality of conveying rollers are properly operated by operating only one main motor.

The motor 130 may further include a emergency lever. The emergency lever serves to manually rotate the motor. The emergency lever is useful because it can continuously move the belt manually at an imminent moment, as the firing device, which requires a high temperature process, stops working due to power failure and the fibers are damaged.

In the conventional technology, the moving speed of the inlet belt is only 150 mm per minute, whereas the moving speed of the inlet belt is improved to 50 cm to 1 m or more per minute due to the technology of the independent roller rotation method of the present invention. This is because the weight of the inlet belt, which is the object to be processed, can be reduced.

According to the conventional technique, the belt has to be made strong to pull the inlet belt itself, and since the belt is heavy, the moving speed is slow, and the weight is heavy and the cooling speed is slow.

On the other hand, according to the present invention, the inlet belt can be moved by the frictional force between the independently rotating roller and the inlet belt. If a lot of rollers are provided, resistance can be increased and the inlet belt can be moved without pulling. In this case, the inlet belt can be made much lighter. As a result, the moving speed of the inlet belt can be increased, the cooling can be easily performed, and the material weight can be reduced by reducing the weight.

An upper heater 140 or a lower heater 145 is installed at an upper portion or a lower portion of the conveying roller 120, respectively. The upper heater 140 and the lower heater 145 have a ceramic protection tube for preventing short-circuiting and serve to heat carbon fibers on the inlet belt. As an example, the upper heater 140 or the lower heater 145 may regulate heat application to the base of the feed roller 120.

At least one upper gas supply pipe 142 is installed in each chamber at a predetermined interval between the upper heater 140 and the transfer roller 120.

At least one lower gas supply pipe 147 is installed at a predetermined interval between the bottom heater 145 and the bottom surface of the internal passage 112.

A gas exhaust pipe 154 is installed at an upper portion of the main body 110 so that gas supplied to the internal passageway 112 through the upper gas supply pipe 142 and the lower gas supply pipe 147 is discharged to the outside.

The separator is a stage in which the internal temperature or conditions of the firing device are different, so that the internal passage air of the preceding stage is not transferred to the internal passage of the post-transfer stage and the post-transfer stage of the fired product.

A plurality of gas ejection holes 143 and 148 are formed in the upper gas supply pipe 142 and the lower gas supply pipe 147 in the longitudinal direction.

A cooling chamber 170 is provided in the direction of the outlet of the main body 110. The cooling chamber 170 cools the fired product heated by the firing device to enable subsequent processing (e.g., transportation or packaging).

The present invention is applied to an inlet belt 122 introduced from an inlet into an internal passage 112 of a main body 110 maintaining a predetermined temperature by a heat source supplied to an upper heater 140 and a lower heater 145, The inlet belt 122 is conveyed in the direction of the exit of the main body 110 by the conveying roller 120. [

The gas is supplied to the fired product 200 placed on the inlet belt 122 on the conveying roller 120 through the upper gas supply pipe 142 and the lower gas supply pipe 147. At this time, the gas supplied to the upper gas supply pipe 142 and the lower gas supply pipe 147 flows into the upper gas supply pipe 142 and the lower gas supply pipe 147 while being preheated by the heat, do.

Each chamber of the firing system can be controlled by nitrogen gas injection and exhaust temperature control, and the oxygen concentration is maintained at 1000 ppm or less.

The gas introduced into the upper gas supply pipe 142 and the lower gas supply pipe 147 is injected into the upper and lower portions of the inlet belt through the plurality of gas ejection holes 143 and 148 formed along the longitudinal direction. The gas injected through the upper gas supply pipe 142 out of the gases injected to the upper and lower portions of the inlet belt 122 through the gas ejection holes 143 and 148 has a predetermined flow rate and is sufficiently in contact with the fired article placed on the inlet belt 122 And the gas injected through the lower gas supply pipe 147 is uniformly injected into the internal passage 112 through the gas ejection holes 143 and 148 and then passes through the lower heater 145 to form an upward flow, Contact with fired product.

The contaminated gas and the insoluble gas generated by the gas supplied to the internal passage 112 in response to the fired product 200 are discharged to the outside of the main body 110 through the multipurpose exhaust pipe 152 of the multipurpose exhaust device 150 do.

The exhaust gas discharged to the outside of the main body 110 is regulated in the exhaust regulator 156 of the multipurpose exhaust device 150.

Residual pollutant gas and insoluble gas that have not been discharged through the multipurpose exhaust pipe 152 are naturally discharged to the outside of the main body 110 through the gas exhaust pipe 154.

The multipurpose exhaust pipe 152 is installed to be positioned above the conveying roller 120 so that the gas is moved toward the conveying roller 120 when the gas is introduced through the exhaust gas inlet hole 155, Forced discharge.

The amount of exhaust gas forced out of the main body 110 is regulated by the exhaust regulator 156 of the multipurpose exhaust device 150. The operator can control the flow and discharge amount of the gas in the internal passage 112 according to the sintered article and the type thereof, thereby efficiently and evenly controlling the discharge gas.

5 shows an example of the overall layout of the hybrid type activation heat treatment system according to the present invention.

Referring to FIG. 5, the nitrogen purge is located at both ends, the carbonization zone and the activation zone are separated by the separation zone, and the activated fired product is cooled.

FIG. 6 is an example of an air supply and exhaust procedure of the hybrid type activation heat treatment system according to the present invention.

Referring to FIG. 6, the roller can be independently controlled by the drive motor until the process of cooling the supply and exhaust air is performed.

FIG. 7 shows an example of carbonization and activation periods of the hybrid type activation heat treatment system according to the present invention.

Referring to FIG. 7, the hybrid type activation heat treatment system continuously processes the carbonization process and the activation process. Carbonization and activation processes differ in the gas atmosphere required, so there are sections that separate these two parts. In the separation section, the gas flowing in the carbonization section and the activation section is collected, discharged through the exhaust port, and the gas flow is controlled so as not to pass the separation section in both directions. The conveying rollers according to the present invention adjust the moving speed so that independent gas atmosphere can be controlled for each section.

It will be apparent to those skilled in the art that various modifications, additions and substitutions are possible, without departing from the spirit and scope of the invention as defined by the appended claims. Should be regarded as belonging to the above-mentioned patent claims.

It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit or scope of the inventive concept as defined by the appended claims. But is not limited thereto.

In the above-described exemplary system, the methods are described on the basis of a flowchart as a series of steps or blocks, but the present invention is not limited to the order of the steps, and some steps may occur in different orders . It will also be understood by those skilled in the art that the steps shown in the flowchart are not exclusive and that other steps may be included or that one or more steps in the flowchart may be deleted without affecting the scope of the invention.

Claims (3)

In the firing apparatus 100,
A main body having a predetermined length of an internal passage from an inlet of a firing chamber for carbonizing or activating the carbon fibers to an outlet of a cooling chamber for cooling the carbonized or activated carbon fibers by applying a high temperature;
An inlet belt disposed at a central portion of the inner passage and moving in the direction from the inlet to the outlet by a frictional force is disposed on the upper portion, at least 60% of the ceramic is constituted by the conveying roller; And
And an upper heater or a lower heater respectively installed on the upper or lower portion of the inner passage so that the conveying roller is located at an upper portion or a lower portion,
Wherein the conveying roller constitutes a conveying roller group composed of a plurality of rollers per room and one end of the conveying rollers constituting the conveying roller group extends to the outside of the inner passage and the extended portion is connected to at least one motor And,
Wherein the motor is connected to a rotating rod provided in a longitudinal direction, the rotating rod is connected to at least one shaft corresponding to each chamber of the firing device,
When the power is connected to the motor, the rotation of the motor is transmitted to the rotation shaft through the miter gear. When the rotation shaft rotates and the shaft rotates, the transport roller connected to the shaft rotates,
A multipurpose exhaust pipe installed at an upper portion of the conveying roller to move in the direction of the conveying roller when the gas is introduced through the exhaust gas inflow hole and forcibly discharge the gas to the outside of the main body; And an exhaust regulator for regulating a discharge amount of the exhaust gas discharged to the outside of the main body.
The method according to claim 1,
A lower gas supply pipe provided at a predetermined interval between the upper heater and the transfer roller or a lower gas supply pipe provided at a predetermined interval between a bottom surface of the lower heater and an inner passage, Further comprising a gas discharge pipe installed at an upper portion of the gas discharge pipe to discharge the gas supplied to the internal passage through the gas supply pipe,
Wherein the upper gas supply pipe and the lower gas supply pipe are formed with a plurality of gas ejection holes along the longitudinal direction,
Wherein the multipurpose exhaust device spontaneously discharges residual pollutant gas and insoluble gas that have not been discharged through the multipurpose exhaust pipe to the outside of the main body through the gas exhaust pipe.
3. The method of claim 2,
Wherein the motor further comprises a manual lever for manually rotating the motor.

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