TWM576652U - High-temperature carbonization furnace - Google Patents

Abstract

The high-temperature carbonization furnace of the present invention comprises: a cavity, at least two sets of microwave units, and a control circuit; each microwave unit is sequentially arranged along a processing path of the cavity; the control circuit is configured to receive a plurality of a signal of a temperature sensor distributed at a processing path of the cavity; a control signal can be generated by the control circuit to control the opening or closing of the magnetron in the different microwave unit, or the magnetron power in the different microwave unit can be controlled and adjusted The way, the processing path presents the expected temperature conditions at the location of each set of microwave units. In addition, the temperature inside the cavity can also be accurately adjusted, so that the temperature distribution in the cavity can be uniform and the heating uniformity of the processing object can be improved, and the temperature gradient control in different temperature zones can be adjusted to achieve the control according to the needs of the processing object. The advantage of processing path temperature conditions.

Description

High temperature carbonization furnace

This creation department is related to the heat treatment equipment. It mainly provides an effective control of the temperature of the whole carbonization furnace, so that the temperature distribution in the chamber can be uniform and the heating uniformity of the processing object can be improved, and the temperature in different temperature zones can be adjusted. The temperature gradient control can even control the high temperature carbonization furnace of the processing path temperature condition according to the needs of the processing object.

In the field of industrial production technology, the physical properties of materials can be changed by heat treatment, or the chemical properties of materials can be changed. It can be regarded not only as a series of methods, but also an indispensable step in many product manufacturing processes; for example, carbon fiber is A new carbon material with a carbon content of more than 90% converted from organic fibers after a series of heat treatments.

In the continuous automated production process of carbon fiber, the fiber yarn is processed through a heat treatment at a predetermined speed, so that the carbonization furnace itself must have an environment sufficient for the fiber yarn, and must accurately control the processing path. The temperature conditions allow the fiber yarns passing through the heat treatment equipment to achieve the desired carbonization effect.

Conventional carbon fiber continuous automated production process, usually using a heating wire heated carbonization furnace to apply high temperature graphitization and graphitization heat treatment to the fiber yarn, the disadvantages of which are slow heat transfer, difficult insulation, and the heating rate is affected by the heat transfer effect. Time heating to reach a sufficient temperature; in particular, the entire heating wire does not exhibit an average temperature state during the actual operation of the heating wire, resulting in its extension There is a significant difference in the temperature of the area. Not only can it not effectively grasp the carbonization quality of the fiber yarn, but also can not control the temperature conditions of the processing path according to the processing object. Moreover, the traditional high-temperature carbonization furnace can be heated by the heating wire, but it is hindered. The strip structure of the heating wire makes it impossible to provide different heating temperatures in different regions of the same cavity during heating, and thus it is impossible to make a slight adjustment of the temperature in a single region of the cavity.

In view of this, the main purpose of this creation is to provide an effective control of the temperature of the overall carbonization furnace, so that the temperature distribution in the cavity can be uniform and the heating uniformity of the processing object can be improved, and the temperature can be adjusted. The gradient temperature control of the zone can even control the high temperature carbonization furnace of the processing path temperature condition according to the requirements of the processing object.

Another object of the present invention is to provide a high-temperature carbonization furnace, by adjusting the number and power of each magnetron, so that different regions of the same cavity can provide different heating temperatures, thereby enabling a single region in the cavity to be based on each temperature. The signal of the sensor is used to control the modal fine adjustment.

In order to achieve the above object, the high-temperature carbonization furnace of the present invention basically comprises: a cavity, at least two sets of microwave units, and a control circuit; wherein: the cavity is provided with a processing path, and the cavity is in the same A feed port and a discharge port are respectively disposed at positions opposite to the two ends of the processing path; each of the microwave units is sequentially disposed along the processing path of the cavity, and each of the microwave units is provided with at least a control circuit is further configured to receive a plurality of signals distributed to the temperature sensor disposed at the processing path of the cavity; and the control circuit has at least one storage carrier and a built-in Each of the storage carriers is electrically connected to the microprocessor so that each The storage carrier and the microprocessor are capable of loading signals of the temperature sensors, so that the control circuit can generate control signals to control the control modes of the respective magnetrons in each of the microwave units.

The high-temperature carbonization furnace of the present invention can select or set an appropriate control mode in the control circuit according to the needs of the processing object, control the opening or closing of the magnetron in different microwave units, or adjust the magnetic field in different microwave units. The way of controlling the power enables the processing path to exhibit the expected temperature conditions at the position of each group of microwave units, so as to achieve the purpose of regulating the processing path temperature conditions according to the needs of the processing object.

According to the above structural feature, the high-temperature carbonization furnace of the present invention is further provided with a gas supply unit connected to the cavity; at least a position adjacent to the processing path is provided at the position of the cavity relative to the processing path The air inlet is provided with at least one exhaust port communicating with the processing path at a position subsequent to the processing path; and the air supply unit is connected to the at least one air inlet.

According to the above structural features, the high-temperature carbonization furnace of the present invention is provided with at least one heat insulating material inside the cavity.

According to the above structural features, the high-temperature carbonization furnace of the present invention further comprises a gas supply unit connected to the cavity; the cavity is provided with at least one heat insulating material; and the cavity is located at a position before the processing path And at least one air inlet communicating with the processing path; at the position of the cavity opposite to the processing path, at least one exhaust port communicating with the processing path; and the air supply unit The at least one air inlet is connected.

According to the above structural features, each of the microwave units is provided with a plurality of magnetrons at positions on both sides and below the processing path.

According to the above structural feature, the high-temperature carbonization furnace is provided with two sets of microwave units along the processing path of the cavity, and each of the microwave unit is provided with three magnetrons.

According to the above structural feature, the high-temperature carbonization furnace is provided with five sets of microwave units along the processing path of the cavity, and the microwave units are respectively provided with three, eight, ten, eight, three The magnetron.

According to the above structural feature, the high-temperature carbonization furnace is provided with ten sets of microwave units along the processing path of the cavity, and the microwave units are respectively provided with three, eight, eight, ten, ten Ten, ten, ten, eight, eight, three of the magnetrons.

The high-temperature carbonization furnace disclosed in the present invention has the advantages of instant penetration, fast heating speed, short acting time, and energy saving, and a temperature control section corresponding to each microwave unit can be planned in the entire processing path; By separately controlling the opening or closing of the magnetrons in different microwave units, or separately adjusting the power of the magnetrons in different microwave units, the processing path exhibits the expected temperature conditions at the position of each group of microwave units. According to the needs of the processing object, the temperature conditions of the processing path can be adjusted in stages to meet the heat treatment requirements of different processing objects; and the processing path can be maintained by adjusting the magnetron power of each microwave unit in real time. The preset temperature helps to control the heat treatment capacity and quality.

10‧‧‧ cavity

11‧‧‧Processing path

12‧‧‧ Feed inlet

13‧‧‧Outlet

14‧‧‧air inlet

15‧‧‧Exhaust port

16‧‧‧Insulation

20‧‧‧Microwave unit

21‧‧‧Magnetron

30‧‧‧Control circuit

31‧‧‧ Temperature Sensor

32‧‧‧Storage carrier

33‧‧‧Microprocessor

40‧‧‧ gas supply unit

50‧‧‧Processing objects

Fig. 1 is a schematic view showing the composition of the high-temperature carbonization furnace of the first embodiment of the present invention.

Fig. 2 is a schematic view showing the state of the microwave unit configuration in the first embodiment of the present invention.

Fig. 3 is a graph showing the temperature distribution of the high-temperature carbonization furnace of the first embodiment of the present invention under the control mode of the first possible implementation.

Fig. 4 is a graph showing the temperature distribution of the high-temperature carbonization furnace of the second embodiment of the present invention in a control mode of the second possible implementation.

Fig. 5 is a schematic view showing the composition of the high-temperature carbonization furnace of the second embodiment of the present invention.

Fig. 6 is a schematic view showing the composition of the high-temperature carbonization furnace of the third embodiment of the present invention.

FIG. 7A is a schematic diagram showing the configuration state of the microwave unit in the fourth embodiment of the present invention.

Fig. 7B is a graph showing the temperature distribution of the high temperature carbonization furnace of the fourth embodiment of the present invention under the control mode of the third possible implementation.

FIG. 8A is a schematic diagram showing the state of the microwave unit configuration in the fifth embodiment of the present invention.

Fig. 8B is a graph showing the temperature distribution of the high temperature carbonization furnace of the fifth embodiment of the present invention in the control mode of the fourth possible implementation.

This creation mainly provides an effective control of the temperature of the overall carbonization furnace, so that the temperature distribution in the cavity can be uniform and the heating uniformity of the processing object can be improved, and the temperature gradient control of different temperature zones can be adjusted, and even The high-temperature carbonization furnace which regulates the processing path temperature condition according to the demand of the processing object, wherein the processing object may be a carbon fiber raw material, and the carbon fiber raw material is quite various, such as bismuth, polyvinyl alcohol, vinylidene chloride, polyacrylonitrile (polyacrylonitrile, PAN) or pitch (pitch) and the like. As shown in FIG. 1 and FIG. 2, the high-temperature carbonization furnace of the present invention basically comprises: a cavity 10, at least two sets of microwave units 20, and a control circuit 30; wherein: The cavity 10 is provided with a processing path 11 through which the processing object 50 (the fiber yarn shown in the figure) passes, and the cavity 10 is respectively disposed at a position opposite to the two ends of the processing path 11 Feed port 12 and a discharge port 13.

Each of the microwave units 20 is disposed along the processing path 11 of the cavity 10, and each of the microwave units 20 is provided with at least one magnetron 21; in implementation, each of the microwave units 20 is provided with a plurality of Preferably, the magnetrons 21 are located at both sides and below the processing path 11.

The control circuit 30 is configured to receive a plurality of signals distributed to the temperature sensor 31 disposed at the processing path 11 of the cavity 10; and the control circuit 30 has at least one storage carrier 32 therein. A microprocessor 33 electrically connected to each of the storage carriers enables each of the storage carriers 32 and the microprocessor 33 to load circuit signals of the temperature sensors 31, so that the control circuit 30 can generate control signals. A control mode for controlling the operation of each of the magnetrons 21 in each of the microwave units 20 is controlled.

According to the present invention, the high-temperature carbonization furnace of the present invention can select or set a suitable control mode in the control circuit 30 according to the demand of the processing object 50 (the fiber yarn shown in the figure), and the magnetic control in the microwave unit 20 Under the operation of the tube 21, the continuously passing processing object 50 (the fiber yarn shown in the figure) is subjected to heat treatment by microwave focusing.

When the overall high-temperature carbonization furnace is in operation, the control circuit 30 can separately control the operation of each of the magnetrons 21 in each of the microwave units 20 according to the signals received from the temperature sensors 31, thereby not only effectively controlling the heating of the overall carbonization furnace. The temperature has the advantages of instant penetration, fast heating, short duration of action, and energy saving.

Even the temperature control sections corresponding to the respective microwave units 20 can be planned in the entire processing path 11; the magnetrons 21 in the different microwave units 20 are individually turned on or off by controlling the respective microwave units 20; Closed, or individually adjusting the power of the magnetron 21 in the different microwave units 20, so that the processing path 11 exhibits the expected temperature conditions at the position of each group of microwave units 20, and can be adjusted according to the requirements of the processing object 50. The purpose of processing path 11 temperature conditions.

In the embodiment shown in FIG. 1 and FIG. 2, the overall high-temperature carbonization furnace is provided with two sets of microwave units 20 along the processing path 11 of the cavity 10, and each of the microwave units 20 is provided with three a magnetron 21; in the implementation, a control mode (as shown in FIG. 3) for setting the section of the processing path 11 corresponding to the two sets of microwave units 20 to be the same temperature, so as to pass through the processing path The processed object 50 of 11 can obtain a uniform heating effect.

In the high-temperature carbonization furnace of the present invention, two sets of microwave units 20 are disposed along the processing path 11 of the cavity 10, and each of the microwave units 20 is provided with three magnetrons 21 respectively. The processing path 11 corresponding to the microwave unit 20 near the feed port 12 is set to a lower temperature control mode (as shown in FIG. 4), so that the processing object 50 entering the cavity 10 is preheated. When the object to be processed 50 reaches the middle of the processing path 11, the desired heating effect can be obtained, and the workpiece 50 is gradually cooled down before passing through the cavity 10.

Since the high-temperature carbonization furnace of the present invention can individually control the opening or closing of each of the magnetrons 21 of the different microwave units 20, or separately adjust the power of each of the magnetrons 21 of the different microwave units 20, it is simple. The effect of the component section regulating the temperature condition of the processing path 11 not only satisfies the heat treatment requirements of the different processing objects 50; in particular, the processing path 11 can be maintained by adjusting the power of the magnetron 21 of each microwave unit 20 in real time. The preset temperature helps to control the heat treatment capacity and quality.

As shown in FIG. 5, the high-temperature carbonization furnace of the present invention may be further provided with a gas supply unit 40 connected to the cavity 10; the cavity 10 is opposite to the processing path 11 At least a gas inlet 14 communicating with the processing path 11 is provided at a position of the previous stage; at least a position of the exhaust gas communicating with the processing path 11 is provided at a position of the cavity 10 relative to the processing path 11 The air supply unit 40 is connected to the at least one air inlet 14; in actual operation, the pre-stored gas can be simultaneously introduced into the cavity 10 by the air supply unit 40, thereby processing the object 50. Produces the expected chemical reaction.

As shown in FIG. 6, the high-temperature carbonization furnace of the present invention can be further provided with at least one heat insulating material 16 inside the cavity 10, and the heat storage material 16 can be used to maintain the inside of the cavity 10. At pre-set operating temperatures, and to achieve energy savings.

Of course, the high-temperature carbonization furnace of the present invention is further provided with a gas supply unit 40 connected to the cavity 10 as shown in the figure; the cavity 10 is provided with at least one heat insulating material 16 therein; At least one position of the cavity 10 adjacent to the processing path 11 is provided with an air inlet 14 communicating with the processing path 11; at least a position of the cavity 10 relative to the processing path 11 is provided at least An exhaust port 15 communicating with the processing path 11; the embodiment of the air supply unit 40 connected to the at least one air inlet 14 is preferably implemented.

Furthermore, the high-temperature carbonization furnace of the present invention is provided with a gas supply unit connected to the cavity, or whether or not a heat insulating material is provided inside the cavity; the overall high-temperature carbonization furnace can be as shown in Figs. 7A and 8A. As shown, a plurality of microwave units 20 are provided along the processing path 11 of the cavity 10 according to the size of the cavity 10. The temperature control sections corresponding to the microwave units 20 are respectively planned, and the respective control units are different. The magnetron 21 in the microwave unit 20 is turned on or off, or the power of the magnetron 21 in the different microwave units 20 is separately adjusted, so that the processing path 11 exhibits the expected temperature condition at the position of each group of microwave units 20. To achieve the temperature condition of the processing path according to the requirements of the processing object 50; for example, the high temperature carbonization furnace shown in FIG. 7A The processing path 11 of the cavity 10 is provided with five sets of microwave units 20, and the high temperature carbonization furnace of FIG. 7B is set along the processing path of the cavity 10 to set the temperature distribution mode; FIG. 8A is shown The high-temperature carbonization furnace is provided with ten sets of microwave units 20 along the processing path 11 of the cavity 10, and the high-temperature carbonization furnace of FIG. 8B is a distribution mode of the temperature set along the processing path 11 of the cavity 10. In the preferred embodiment of the present invention, a temperature control section corresponding to each of the microwave units 20 is separately planned, and each of the zones separately adjusts the manner in which the magnetrons 21 of the different microwave units 20 are turned on or off to achieve the respective magnetic states. The control tube 21 adjusts the temperature of the section of the processing path 11 in each area, so that the control of the different temperature zones can be adjusted, and the control processing path 11 of each section is adjusted to perform the temperature adjustment condition.

In the embodiment shown in FIG. 7A, the microwave units 20 are respectively provided with three, eight, ten, eight, and three magnetrons 21, and the entire processing path 11 can be planned. The temperature control sections corresponding to the microwave units 20 provided with three, eight, ten, eight, and three magnetrons 21 are respectively arranged to make the processing path 11 appear at the position of each group of microwave units 20 The temperature condition is such that the temperature condition of the processing path can be controlled in stages according to the requirements of the processing object 50.

In the embodiment shown in FIG. 8A, the microwave units 20 are respectively provided with three, eight, eight, ten, ten, ten, ten, eight, eight, respectively. The three magnetrons 21 can plan the entire processing path 11 to be respectively controlled by a temperature control section corresponding to the microwave unit 20 provided with three, eight, ten, eight, and three magnetrons 21, The processing path 11 is brought to the desired temperature condition at the position of each group of microwave units 20, so that the temperature conditions of the processing path can be adjusted in stages according to the requirements of the processing object 50.

Since, in the heat treatment operation, the section closer to the feed port 12 requires buffering time for the processing object 50 when the workpiece 50 enters the cavity 10 from the room temperature state, Therefore, it can be controlled that a relatively high temperature state is not required, so that the microwave unit 20 corresponding to the section closer to the feed port 12 can be configured with a relatively small number of magnetrons 21.

When the processing object 50 enters the interior of the cavity 10, it is required to accept a higher temperature effect, so that the microwave unit 20 corresponding to the section concentrated at the intermediate position of the processing path 11 is preferably configured with a larger number of magnetrons 21; When the processing object 50 moves toward the discharge port 13 via the inside of the cavity 10, the processing object 50 is usually provided with a buffering time for contacting the outside air of the cavity 10, so that it can be controlled without requiring a higher temperature state. Therefore, the microwave unit 20 corresponding to the section closer to the discharge port 13 can be configured with a relatively small number of magnetrons 21.

Compared with the conventional structure, the high-temperature carbonization furnace disclosed in the present invention has the advantages of instant penetration, fast heating speed, short acting time, and energy saving, and can be planned by the respective microwave units in the entire processing path. The temperature control section; the position of the processing path in each group of microwave units by individually controlling the opening or closing of the magnetrons in different microwave units, or separately adjusting the power of the magnetrons in different microwave units The expected temperature conditions are met, and the temperature conditions of the processing path can be adjusted in stages according to the requirements of the processing object to meet the heat treatment requirements of different processing objects; and the manner of adjusting the magnetron power of each microwave unit can be adjusted in real time. Keeping the processing path at a preset temperature helps control the heat treatment capacity and quality.

The embodiments described above are only for explaining the technical idea and characteristics of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement them according to the scope of the patent. That is, the equivalent changes or modifications made by the people in accordance with the spirit revealed by this creation should still be covered by the scope of the patent of this creation.

Claims (8)

A high temperature carbonization furnace comprising: a cavity (10), at least two sets of microwave units (20), and a control circuit (30); wherein: the cavity (10) is provided with a processing path (11), and The cavity (10) is respectively provided with a feeding port (12) and a discharging port (13) at positions opposite to the two ends of the processing path (11); each of the microwave units (20) is The sequence is disposed along the processing path (11) of the cavity (10), and each of the microwave units (20) is provided with at least one magnetron (21); the control circuit (30) is further configured to receive a plurality of a signal of a temperature sensor (31) disposed at the processing path (11) of the cavity (10); and the control circuit (30) is internally provided with at least one storage carrier (32) and a a microprocessor (33) electrically connected to each of the storage carriers, wherein each of the storage carriers (32) and the microprocessor (33) can load circuit signals of the temperature sensors (31) to enable the The control circuit (30) is capable of generating a control signal to control a control mode of operation of each of the magnetrons (21) of each of the microwave units (20). The high-temperature carbonization furnace according to claim 1, wherein the high-temperature carbonization furnace is further provided with a gas supply unit (40) connected to the cavity (10); and the cavity (10) is opposite to the processing At a position before the path (11), at least one air inlet (14) communicating with the machining path (11) is provided; at the position of the cavity (10) relative to the processing path (11), There is at least one exhaust port (15) communicating with the processing path (11); and the air supply unit (40) is connected to the at least one air inlet (14). The high-temperature carbonization furnace according to claim 1, wherein the high-temperature carbonization furnace is provided with at least one heat insulating material (16) inside the cavity (10). The high-temperature carbonization furnace according to claim 1, wherein the high-temperature carbonization furnace is further provided with a gas supply unit (40) connected to the cavity (10); the cavity (10) is provided with at least one heat preservation inside. a material (16); at a position of the cavity (10) relative to the processing path (11), at least one air inlet (14) communicating with the processing path (11); (10) at least one end portion of the processing path (11) is provided with at least one exhaust port (15) communicating with the processing path (11); and the air supply unit (40) and the at least one air intake Port (14) is connected. The high temperature carbonization furnace according to any one of claims 1 to 4, wherein each of the microwave units (20) is provided with a plurality of magnetrons at positions on both sides and below the processing path (11) Tube (21). The high-temperature carbonization furnace according to any one of claims 1 to 4, wherein the high-temperature carbonization furnace is provided with two sets of microwave units (20) along the processing path (11) of the cavity (10), Each of the microwave units (20) is provided with three magnetrons (21). The high-temperature carbonization furnace according to any one of claims 1 to 4, wherein the high-temperature carbonization furnace is provided with five sets of microwave units (20) along the processing path (11) of the cavity (10). The microwave unit (20) is provided with three, eight, ten, eight, three magnetrons (21) in sequence. The high-temperature carbonization furnace according to any one of claims 1 to 4, wherein the high-temperature carbonization furnace is provided with ten sets of microwave units (20) along the processing path (11) of the cavity (10), Each of the microwave units (20) is provided with three, eight, eight, ten, ten, ten, ten, eight, eight, three magnetrons (21). .