Reaction furnace for polyimide film production

Abstract

The utility model relates to the technical field of reaction furnaces, and discloses a reaction furnace for polyimide film production, which comprises a waste gas collecting device, the back of the waste gas collecting device is fixedly connected with a reaction furnace device, the side of the reaction furnace device is fixedly sleeved with a rotating roller device, and the waste gas collecting device comprises an exhaust pipe shell. A first motor is fixedly connected to the front face of the exhaust pipe shell, wire pipes are electrically connected to the two sides of the first motor, cold end plates are electrically connected to one ends of the two wire pipes, semiconductor connecting plates are electrically connected to the back faces of the two cold end plates, and heated plates are electrically connected to the back faces of the semiconductor connecting plates. The back rotating shaft of the first motor is connected with a fan, and the fan is located in the exhaust pipe shell, so that the problem of energy waste is favorably avoided, and the problem that harmful gas is generated in the imidization process and is discharged outdoors through a chimney to cause environmental pollution is solved.

Description

Technical Field

[0001] This utility model relates to the field of reaction furnace technology, and more specifically to a reaction furnace for the production of polyimide films. Background Technology

[0002] A reactor, as a device used for chemical reactions or physical changes, is typically designed to withstand operating conditions under high temperatures, high pressures, or specific atmospheres. In the production of polyimide films, the reactor plays a crucial role; it not only serves as the site of the chemical reaction but also determines the product quality and production efficiency.

[0003] Chinese Patent Publication No. CN114849635B discloses an energy-saving reactor comprising a closed reaction tank and a preheating cylinder. The preheating cylinder is disposed within the cavity of the reaction tank. The upper end of the preheating cylinder has a feeding port, and the lower end has a discharging port pointing towards the lower part of the reaction tank cavity. The lower part of the preheating cylinder has a discharging channel, and the inner circumferential surface of the discharging channel is provided with a protruding discharging limiting device. When used in the production of aluminum trichloride, this energy-saving reactor can mitigate the potential cracking problem of aluminum ingots directly contacting high-temperature liquids, while simultaneously recovering and utilizing a large amount of heat energy, thus solving the problem of additional energy consumption required for aluminum ingot preheating.

[0004] However, the following problems still exist: the imidization process of polyamic acid in the reactor generates a large amount of heat. Apart from the heat required for imidization, the rest of this heat is dissipated to the outside, resulting in a lot of energy waste. In addition, harmful gases such as nitrogen oxides are generated during the imidization process. These harmful gases are emitted outdoors through chimneys, causing environmental pollution and triggering environmental problems. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the present invention provides a reaction furnace for the production of polyimide films to solve the problems existing in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a reaction furnace for polyimide film production, comprising a waste gas collection device, a reaction furnace device fixedly connected to the back of the waste gas collection device, a rotating roller device fixedly sleeved on the side of the reaction furnace device, the waste gas collection device comprising an extraction pipe shell, a first motor fixedly connected to the front of the extraction pipe shell, electrical conduits electrically connected to both sides of the first motor, a cold end plate electrically connected to one end of each of the two electrical conduits, a semiconductor connecting plate electrically connected to the back of the two cold end plates, a heating plate electrically connected to the back of the semiconductor connecting plate, a fan connected to the shaft of the back of the first motor, the fan being located inside the extraction pipe shell, a reaction furnace cylinder connected to the back of the extraction pipe shell, a waste gas pipe connected to the bottom of the extraction pipe shell, and a filter box connected to the bottom end of the waste gas pipe.

[0007] Furthermore, the reactor device includes a reactor cylinder, with a first connecting strip electrically connected to the bottom of the inner side of the reactor cylinder, and a heating coil electrically connected to the side of the first connecting strip.

[0008] Furthermore, the heating coil is located inside the reactor cylinder and is attached to the inner wall of the side of the reactor cylinder.

[0009] Furthermore, a fixing block is fixedly sleeved on the side of one end of the reactor cylinder, and two support plates are fixedly connected to the bottom of the reactor cylinder.

[0010] Furthermore, the rotating roller device includes a second motor, with second connecting bars fixedly connected to the top and bottom of the second motor, and piston rods fixedly connected to one side of the top of each of the two second connecting bars, with a cylinder movably sleeved at one end of each of the two piston rods.

[0011] Furthermore, one end of the pipe on one side of each of the two cylinders is connected to an air inlet, and one end of the pipe on one side of each of the two cylinders is connected to an air outlet, with the air outlet adjacent to the air inlet. A connecting block is fixedly connected to the side of each of the two cylinders, and a reactor cylinder is fixedly sleeved on the inner side of the connecting block. A fixing block is movably sleeved on the side of each of the two piston rods.

[0012] Furthermore, a furnace cover is bolted to one side of the second motor, and a rotating roller is connected to the middle shaft on one side of the second motor.

[0013] The technical effects and advantages of this invention are as follows: The polyamic acid film is guided to the inlet of the imidization furnace.

[0014] 1. This utility model incorporates a waste gas collection device, placing the heated plate in the reactor. The high temperature of the reactor causes the heated plate to be hotter than the cold end plate. The heated plate and the cold end plate are connected by a semiconductor, and the temperature difference between them creates a potential difference. Electrons flow from the high potential to the low potential, further forming an electric current. The current drives a fan to absorb the waste gas generated in the reactor and transfer it to the filter box. This helps to avoid the problem of energy waste caused by the dissipation of heat (except for the heat required for imidization) to the outside world. It also solves the problem of environmental pollution caused by the generation of harmful gases such as nitrogen oxides during imidization, which are emitted outdoors through chimneys.

[0015] 2. This utility model, by incorporating a rotating roller device, utilizes the piston movement within a cylinder to guide the polyamic acid film into the imidization furnace and seals the furnace opening, preventing heat leakage before the reaction is complete. The rotating roller, driven by a motor, rotates uniformly, ensuring the film is heated evenly within the furnace. This facilitates the smooth and uniform passage of the film through the reaction zone before imidization and ensures uniform heating within the reaction zone, thereby improving the quality of polyimide film production. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the waste gas collection device of this utility model;

[0018] Figure 3 This is a schematic diagram of the rear structure of the waste gas collection device of this utility model;

[0019] Figure 4 This is a front cross-sectional view of the reactor device of this utility model;

[0020] Figure 5 This is a schematic diagram of the rotating roller device of this utility model.

[0021] The attached figures are labeled as follows: 1. Waste gas collection device; 101. Extraction pipe shell; 102. First motor; 103. Electrical conduit; 104. Cold end plate; 105. Semiconductor connection plate; 106. Heating plate; 107. Fan; 108. Waste gas pipe; 109. Filter box; 2. Reactor device; 201. Reactor cylinder; 202. First connecting bar; 203. Heating coil; 204. Fixing block; 205. Support plate; 3. Rotating roller device; 301. Second motor; 302. Second connecting bar; 303. Piston rod; 304. Cylinder; 305. Air inlet; 306. Air outlet; 307. Connecting block; 308. Furnace cover; 309. Rotating roller. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. In addition, the forms of the various structures described in the following embodiments are merely illustrative. The reaction furnace for the production of polyimide film involved in this utility model is not limited to the structures described in the following embodiments. All other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0023] Reference Figures 1 to 5 This utility model provides a reaction furnace for the production of polyimide film, including a waste gas collection device 1, a reaction furnace device 2 fixedly connected to the back of the waste gas collection device 1, and a rotating roller device 3 fixedly sleeved on the side of the reaction furnace device 2.

[0024] In this embodiment, it is necessary to specifically explain that the exhaust gas collection device 1 helps to avoid the problem that all heat except for that required for imidization is dissipated to the outside, causing a lot of energy waste. It also solves the problem that harmful gases such as nitrogen oxides are generated during the imidization process, which are emitted outdoors through chimneys and cause environmental pollution. The roller device 3 helps to ensure that the film can pass through the reaction zone smoothly and evenly before imidization and be heated evenly in the reaction zone, thereby improving the quality of polyimide film production. The specific structure and working principle of the above components will be explained in detail later.

[0025] In a preferred embodiment, the exhaust gas collection device 1 includes an exhaust pipe shell 101. A first motor 102 is fixedly connected to the front of the exhaust pipe shell 101. Electrically connected conduits 103 are connected to both sides of the first motor 102. One end of each of the two conduits 103 is electrically connected to a cold end plate 104. A semiconductor connection plate 105 is electrically connected to the back of the two cold end plates 104. A heating plate 106 is electrically connected to the back of the semiconductor connection plate 105. A fan 107 is connected to the shaft on the back of the first motor 102. The fan 107 is located inside the exhaust pipe shell 101. A reaction furnace cylinder 201 is connected to the back of the exhaust pipe shell 101. An exhaust gas pipe 108 is connected to the bottom of the exhaust pipe shell 101. A filter box 109 is connected to the bottom of the exhaust gas pipe 108.

[0026] In this embodiment, it is necessary to further explain that the heated plate 106 is placed in the reactor. The high temperature of the reactor makes the temperature of the heated plate 106 higher than that of the cold end plate. The heated plate 106 and the cold end plate 104 are connected by a semiconductor connection plate 105. The temperature difference between the two forms a potential difference. Electrons flow from the high potential to the low potential to further form an electric current. The current drives the fan 107 to work, absorbing the waste gas generated in the reactor and transferring it to the filter box 109. This helps to avoid the problem that, apart from the heat required for imidization, the rest is dissipated to the outside, causing a lot of energy waste. It also solves the problem that harmful gases such as nitrogen oxides are generated during the imidization process. These harmful gases are emitted to the outside through the chimney, causing environmental pollution. The filter box 109 is prior art and will not be described in detail.

[0027] In a preferred embodiment, the reactor device 2 includes a reactor cylinder 201. A first connecting strip 202 is electrically connected to the bottom of the inner side of the reactor cylinder 201. A heating coil 203 is electrically connected to the side of the first connecting strip 202. The heating coil 203 is located inside the reactor cylinder 201 and fits against the inner wall of the side of the reactor cylinder 201. A fixing block 204 is fixedly sleeved on the side of one end of the reactor cylinder 201. Two support plates 205 are fixedly connected to the bottom of the reactor cylinder 201.

[0028] In a preferred embodiment, the rotating roller device 3 includes a second motor 301. The top and bottom of the second motor 301 are fixedly connected to second connecting bars 302. Piston rods 303 are fixedly connected to one side of the top of each of the two second connecting bars 302. A cylinder 304 is movably sleeved at one end of each of the two piston rods 303. An air inlet 305 is connected to one end of one side of each of the two cylinders 304, and an air outlet 306 is connected to one end of one side of each of the two cylinders 304, with the outlet 306 adjacent to the air inlet 305. A connecting block 307 is fixedly connected to the side of each of the two cylinders 304. A reaction furnace cylinder 201 is fixedly sleeved on the inner side of the connecting block 307. A fixing block 204 is movably sleeved on the side of each of the two piston rods 303. A furnace cover 308 is bolted to one side of the second motor 301, and a rotating roller 309 is connected to the middle rotating shaft on one side of the second motor 301.

[0029] In this embodiment, it is necessary to specifically explain that the rotating roller device 3 uses the piston rod 303 in the cylinder 304 to guide the polyamic acid film into the imidization furnace and seals the furnace opening so that the heat in the furnace will not leak before the reaction is completed. The rotating roller 309 is driven by the second motor 301 to rotate evenly, so that the film is heated evenly in the furnace. This helps to ensure that the film can pass through the reaction zone smoothly and evenly before imidization and be heated evenly in the reaction zone, thereby improving the quality of polyimide film production.

[0030] The working principle of this utility model is as follows: The heating plate 106 is placed in the reactor. The high temperature of the reactor makes the temperature of the heating plate 106 higher than that of the cold end plate. The heating plate 106 and the cold end plate 104 are connected by a semiconductor connection plate 105. The temperature difference between the two forms a potential difference. Electrons flow from the high potential to the low potential to further form an electric current. The current drives the fan 107 to work, which absorbs the waste gas generated in the reactor and transmits it to the filter box 109. This helps to avoid the problem that, apart from the heat required for imidization, the rest is dissipated to the outside, causing a lot of energy waste. It also solves the problem that harmful gases such as nitrogen oxides are generated during the imidization process. These harmful gases are emitted to the outside through the chimney, causing environmental pollution.

[0031] The rotating roller device 3 uses the piston rod 303 in the cylinder 304 to guide the polyamic acid film into the imidization furnace and seals the furnace opening to prevent heat leakage before the reaction is completed. The rotating roller 309 is driven by the second motor 301 to rotate evenly, so that the film is heated evenly in the furnace. This helps to ensure that the film can pass through the reaction zone smoothly and evenly before imidization and is heated evenly in the reaction zone, thereby improving the quality of polyimide film production.

[0032] Finally, the following points should be noted: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installation", "connection", and "linkage" should be interpreted broadly, and can be mechanical or electrical connections, or internal connections between two components, or direct connections. "Up", "down", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may change.

[0033] Secondly: The accompanying drawings of the embodiments disclosed in this invention only involve the structures involved in the embodiments disclosed in this invention. Other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of this invention can be combined with each other.

[0034] In conclusion, the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A reaction furnace for the production of polyimide films, comprising a waste gas collection device (1), characterized in that, The exhaust gas collection device (1) is fixedly connected to a reactor device (2) on its back side. A rotating roller device (3) is fixedly sleeved on the side of the reactor device (2). The exhaust gas collection device (1) includes an exhaust pipe shell (101). A first motor (102) is fixedly connected to the front of the exhaust pipe shell (101). Both sides of the first motor (102) are electrically connected to electrical conduits (103). One end of each of the two electrical conduits (103) is electrically connected to a cold end plate (104). The back of the two cold end plates (104) is electrically connected to the cold end plate (104). A semiconductor connection plate (105) is electrically connected to the back of the semiconductor connection plate (105), and a heating plate (106) is electrically connected to the back of the first motor (102). A fan (107) is connected to the back shaft of the first motor (102). The fan (107) is located inside the exhaust pipe shell (101). A reaction furnace cylinder (201) is connected to the back pipe of the exhaust pipe shell (101). An exhaust gas pipe (108) is connected to the bottom pipe of the exhaust gas pipe (108). A filter box (109) is connected to the bottom pipe of the exhaust gas pipe (108).

2. The reaction furnace for polyimide film production according to claim 1, characterized in that: The reactor device (2) includes a reactor cylinder (201), and a first connecting strip (202) is electrically connected to the bottom of the inner side of the reactor cylinder (201), and a heating coil (203) is electrically connected to the side of the first connecting strip (202).

3. A reaction furnace for polyimide film production according to claim 2, characterized in that: The heating coil (203) is located inside the reactor cylinder (201) and is attached to the inner side wall of the reactor cylinder (201).

4. A reaction furnace for producing polyimide films according to claim 2, characterized in that: A fixing block (204) is fixedly sleeved on one side of the reactor cylinder (201), and two support plates (205) are fixedly connected to the bottom of the reactor cylinder (201).

5. A reaction furnace for producing polyimide films according to claim 1, characterized in that: The rotating roller device (3) includes a second motor (301), and a second connecting bar (302) is fixedly connected to the top and bottom of the second motor (301). A piston rod (303) is fixedly connected to one side of the top of each of the two second connecting bars (302), and a cylinder (304) is movably sleeved at one end of each of the two piston rods (303).

6. A reaction furnace for producing polyimide films according to claim 5, characterized in that: One end of each of the two cylinders (304) is connected to an air inlet (305), and one end of each of the two cylinders (304) is connected to an air outlet (306), with the air outlet (306) adjacent to the air inlet (305). A connecting block (307) is fixedly connected to the side of each of the two cylinders (304), and a reactor cylinder (201) is fixedly sleeved on the inner side of the connecting block (307). A fixing block (204) is movably sleeved on the side of each of the two piston rods (303).

7. A reaction furnace for producing polyimide films according to claim 5, characterized in that: A furnace cover (308) is bolted to one side of the second motor (301), and a rotating roller (309) is connected to the middle shaft on one side of the second motor (301).

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