Environment-friendly carbon / carbon composite material rapid carbonization equipment

Abstract

The utility model discloses environment-friendly carbon / carbon composite material rapid carbonization equipment, and relates to the technical field of carbonization equipment. The carbonization furnace comprises a support, a first soft heat preservation layer, a furnace shell, a heater, a carbonization mold and a second soft heat preservation layer, wherein the heater is hung on the inner wall of the furnace shell in a surrounding mode through a heater fixing support. The carbonization mold comprises a product outer mold, a product inner mold and a mold upper cover; according to the technical scheme, the soft heat preservation layer is made of soft materials and is high in plasticity, space design can be carried out on equipment according to the product specification, the working space can be attached to the product size as much as possible, heat waste in the carbonization process can be reduced, the purpose of rapid heating is achieved, the production period is greatly shortened, and energy consumption is reduced; the position of the heater support can be adjusted through the cooperation of the transverse adjusting groove holes and the locking bolts so as to adapt to products of different shapes and specifications, so that the heat radiation distance is effectively shortened, and rapid temperature rising is guaranteed. And incineration products meet the environment-friendly requirement.

Description

Technical Field

[0001] The utility model belongs to the technical field of carbonization equipment, in particular to an environmentally friendly carbon / carbon composite material rapid carbonization equipment. Background Art

[0002] Carbon / carbon composite materials are all-carbon composite materials made by gas phase or liquid phase process with carbon fiber braid as reinforcement material and carbon as matrix. They are widely used in high-temperature thermal equipment. Carbonization is the key process of liquid phase densification process of carbon / carbon composite materials. It is to heat treat the impregnating agent in an inert atmosphere, and the elements other than carbon are discharged in the form of gas, and the carbon element is converted into the matrix carbon necessary for carbon / carbon composite materials. Among them, the impregnating agent is generally phenolic resin, furan resin, furfural resin, etc.

[0003] With the development of carbon / carbon composite material production technology, carbonization equipment is becoming larger. By increasing the furnace load, the production cost can be reduced. To ensure the complete carbonization of the impregnant, the equipment heating rate should be slow, generally 10-30℃ / h, the carbonization temperature ≥800℃, and the insulation time should be long. Generally, a carbonization cycle including the cooling time should be more than 7 days. In addition, organic molecules are generated during the carbonization process, and environmental protection equipment such as incinerators are required to treat the tail gas. In summary, carbonization equipment has the disadvantages of long carbonization cycle, high energy consumption, and special treatment of tail gas. Therefore, this technical solution proposes an environmentally friendly carbon / carbon composite material rapid carbonization equipment. Utility Model Content

[0004] The utility model provides an environmentally friendly carbon / carbon composite material rapid carbonization device, which is used to solve the problems existing in the existing conventional carbonization devices mentioned in the background technology.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model discloses an environmentally friendly carbon / carbon composite material rapid carbonization equipment, comprising a bracket, a first soft insulation layer arranged on the bracket table, a furnace shell vertically arranged on the first soft insulation layer, a heater hanging on the inner wall of the furnace shell by a heater fixing bracket, and a carbonization mold located in the furnace shell; a second soft insulation layer is attached to the inner wall of the furnace shell;

[0007] The carbonization mold includes a product outer mold wrapping the product and a mold upper cover arranged on the top of the product outer mold; the bottom of the product outer mold is a sealed bottom; the carbonization mold also includes a product inner mold arranged inside the product;

[0008] The product is placed inside the product outer mold and is air-sealed by the mold upper cover; the mold upper cover is provided with an exhaust gas guide pipe which is connected to the cavity and airtightly connected.

[0009] Furthermore, an exhaust gas duct switch is installed on the exhaust gas duct.

[0010] Furthermore, the furnace shell is used to fix the first soft insulation layer and the second soft insulation layer, and the furnace shell is made of stainless steel.

[0011] Furthermore, the first soft thermal insulation layer and the second soft thermal insulation layer are both made of thermal insulation felt made of aluminum silicate ceramic material.

[0012] Furthermore, the heater fixing bracket includes a transverse adjustment plate with a transverse adjustment slot, an L-shaped mounting plate vertically arranged at the bottom of the transverse adjustment plate for fixing the heater, and a locking bolt fixedly installed on the top of the furnace shell and cooperating with the transverse adjustment slot for transverse adjustment.

[0013] Furthermore, the product inner mold, product outer mold and mold cover are all made of graphite.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] (1) The soft insulation layer is made of soft material with strong plasticity. The space inside the equipment can be designed according to the product specifications so that the working space can fit the product size as much as possible, which can reduce the heat waste during the carbonization process and achieve the purpose of rapid carbonization. The single carbonization cycle is about 1 hour, which greatly shortens the production cycle and reduces energy consumption;

[0016] (2) The heating system includes a heater and a heater bracket. The position of the heater bracket can be adjusted through a lateral adjustment slot and a locking bolt to accommodate products of different shapes and specifications, thereby effectively shortening the heat radiation distance and ensuring rapid carbonization.

[0017] (3) The tail gas directional treatment system includes an air guide pipe connected to the cavity between the product inner mold and the product outer mold and an air guide pipe switch, which can guide the tail gas during carbonization and use the tail gas's own temperature for incineration. Since the tail gas during the carbonization process is mainly composed of organic small molecule gases such as carbon, hydrogen, and oxygen, the incineration products are mainly water and carbon dioxide, which can meet the emission requirements;

[0018] (4) During the carbonization process of the product, the mold is sealed and connected to the exhaust gas directional treatment system. During carbonization, due to exhaust gas emissions and temperature increase, the entire system is in a positive pressure state, and the gas can be discharged to the outside through the exhaust gas directional treatment system; during the cooling process, the exhaust gas directional treatment system switch is turned off, and the negative pressure in the system will not cause air backflow due to cooling; therefore, the product will not come into contact with oxygen in the high temperature section during the entire treatment process, ensuring product safety.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 This is a schematic structural diagram of an environmentally friendly carbon / carbon composite material rapid carbonization device of the utility model;

[0022] Figure 2 for Figure 1 A top view of the structure;

[0023] Figure 3 is a vertical cross-sectional view of specific embodiment 1;

[0024] Figure 4 is a vertical cross-sectional view of specific embodiment 2;

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1-first soft insulation layer, 2-second soft insulation layer, 3-furnace shell, 4-bracket, 5-heater, 6-heater fixing bracket, 61-lateral adjustment slot, 9-product, 10-mold cover, 11-exhaust gas duct, 12-duct switch. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be understood that the terms "table top", "inner wall", "inside", "bottom", "upper cover", "top", "lateral" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention. Specific embodiment 1:

[0030] See also Figure 1-3As shown, an environmentally friendly carbon / carbon composite material rapid carbonization device of the utility model comprises a bracket 4, a first soft thermal insulation layer 1 arranged on the table of the bracket 4, a furnace shell 3 vertically arranged on the first soft thermal insulation layer 1, a heater 5 surrounded and hung on the inner wall of the furnace shell 3 by a heater fixing bracket 6, and a carbonization mold located in the furnace shell 3; a second soft thermal insulation layer 2 is attached to the inner wall of the furnace shell 3;

[0031] The carbonization mold includes a product outer mold wrapping the product 9, a product inner mold arranged in the product 9, and a mold upper cover 10 arranged on the top of the product outer mold; the bottom of the product outer mold is a sealed bottom; in this specific embodiment, the product 9 specifically adopts a cylindrical structure, and the product outer mold and the product inner mold both adopt a cylindrical structure; of course, based on the specific shape of the product, a rectangular cover structure, a triangular cover structure and other forms of mold structures are also selected, which also belong to the protection scope of this technical solution;

[0032] The product 9 is placed inside the product outer mold and is air-sealed by the mold upper cover 10; the mold upper cover 10 is provided with an exhaust gas guide pipe 11 which is connected to the cavity and airtightly connected.

[0033] The exhaust gas duct 11 is provided with an exhaust gas duct switch 12 .

[0034] The furnace shell 3 is used to fix the first soft insulation layer 1 and the second soft insulation layer 2, and the furnace shell 3 is made of stainless steel; its structure can be designed to be circular or polygonal.

[0035] The first soft thermal insulation layer 1 and the second soft thermal insulation layer 2 are both made of thermal insulation felt made of aluminum silicate ceramic material; this material is a conventional thermal insulation material, is easy to cut and can withstand high temperatures of 1200°C.

[0036] Among them, the heater fixing bracket 6 includes a transverse adjustment plate with a transverse adjustment slot 61, an L-shaped mounting plate vertically arranged at the bottom of the transverse adjustment plate for fixing the heater 5, and a locking bolt fixedly installed on the top of the furnace shell 3 and cooperating with the transverse adjustment slot 61 for transverse adjustment; the technical solution adjusts the position of the heater 5 by adjusting the hanging position; the heating system adopts a modular design, which is easy to disassemble and combine various shapes.

[0037] Among them, the product inner mold, the product outer mold and the mold cover 10 are all made of graphite.

[0038] The exhaust gas directional treatment system includes an air guide pipe and an air guide pipe switch. The exhaust gas is guided during carbonization and incinerated using the exhaust gas's own temperature. Since the exhaust gas during the carbonization process is mainly composed of small organic molecules of carbon, hydrogen and oxygen, the incineration products are mainly water and carbon dioxide, which can meet the emission requirements. When the heating temperature exceeds 600°C, the carbonized decomposition products are mainly small organic molecules of carbon, hydrogen and oxygen (such as methane). The ignition point of small molecules is around 500°C. When the exhaust gas temperature exceeds the ignition point of small molecules, it can burn.

[0039] The exhaust gas directional treatment system includes a mold cover connected to the product outer mold. The mold cover has a hole in the cavity between the product inner mold and the product outer mold. The hole is connected to the exhaust pipe. During carbonization, the exhaust gas can only enter the exhaust pipe through the hole in the graphite cover. The pipe can adjust the exhaust direction according to demand.

[0040] The working steps of this technical solution are:

[0041] 1. Arrange aluminum silicate ceramic insulation material in the furnace shell according to the product size, and control the cavity distance between the insulation material and the graphite mold to be 50mm;

[0042] 2. Place the product together with the graphite mold into the working space of the equipment and place it in the center;

[0043] 3. Install heaters evenly between the graphite mold and the aluminum silicate ceramic insulation material;

[0044] 4. Connect the graphite mold to the tail gas directional treatment system, turn on the air guide switch, and power on for heating;

[0045] 5. Heat until flames appear at the exhaust port of the tail gas directional treatment system and the product begins to carbonize. Continue heating until the flames disappear and carbonization is completed. Close the air guide switch. It is estimated that a single carbonization cycle is about 1 hour.

[0046] 6. Cool down to room temperature, take out the product and weigh it.

[0047] In this specific embodiment 1, an environmentally friendly carbon / carbon composite material rapid carbonization device is used to carbonize a carbon / carbon product having a size of φ160*φ110*300mm, and its use includes the following steps:

[0048] (1) Select a graphite mold with an outer mold size of φ210*φ161*320mm, an inner mold size of φ109*φ50*320mm, and a mold cover size of φ210*25mm, lay the second soft insulation material, and control the effective working space of the equipment to 310*310*600mm;

[0049] (2) Place the product together with the graphite mold in the working space of the equipment and place it in the center;

[0050] (3) Heaters are evenly installed between the graphite mold and the aluminum silicate ceramic insulation material;

[0051] (4) Connect the graphite mold to the tail gas directional treatment system and turn on the air guide switch;

[0052] (5) Power on and heat for 32 minutes. A flame appears at the exhaust port of the tail gas directional treatment system and the product begins to carbonize. Continue heating for 15 minutes until the flame disappears, indicating carbonization is complete. Turn off the air duct switch.

[0053] (6) After cooling to room temperature, the product is taken out and transferred to the next process. Specific embodiment 2:

[0055] As 1-2 and Figure 4 As shown;

[0056] The difference between this specific embodiment and the specific embodiment 1 is that there is no inner mold for the product; the product 9 is in the outer mold and its height is shorter than that of the outer mold, that is, there is a gap between it and the mold upper cover 10, and the corresponding opening is opened on the surface of the mold upper cover 10, and the opening is connected to the exhaust pipe. During carbonization, the exhaust gas can only enter the exhaust pipe through the opening of the graphite cover, and the pipe can adjust the exhaust direction according to the demand;

[0057] In this specific embodiment 2, an environmentally friendly carbon / carbon composite material rapid carbonization device is used to carbonize a carbon / carbon product having a size of φ210*300mm, and its use includes the following steps:

[0058] (1) Select a graphite mold with an outer mold size of φ260*φ211*350mm and a mold cover size of φ260*20mm, lay the second soft insulation material, and control the effective working space of the equipment to 310*310*600mm;

[0059] (2) Place the product together with the graphite mold in the working space of the equipment and place it in the center;

[0060] (3) Heaters are evenly installed between the graphite mold and the aluminum silicate ceramic insulation material;

[0061] (4) Connect the graphite mold to the tail gas directional treatment system and turn on the air guide switch;

[0062] (5) Power on and heat. After 40 minutes of heating, a flame appears at the exhaust port of the tail gas directional treatment system, and the product begins to carbonize. Continue heating for 18 minutes, and the flame disappears, indicating that carbonization is complete. Turn off the air duct switch;

[0063] (6) After cooling to room temperature, the product is taken out and transferred to the next process.

[0064] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An environmentally friendly carbon / carbon composite material rapid carbonization device, characterized in that: It comprises a support (4), a first soft thermal insulation layer (1) arranged on the table of the support (4), a furnace shell (3) arranged vertically on the first soft thermal insulation layer (1), a heater (5) suspended on the inner wall of the furnace shell (3) by a heater fixing support (6), and a carbonization mold located in the furnace shell (3); a second soft thermal insulation layer (2) is attached to the inner wall of the furnace shell (3); The carbonization mold comprises a product outer mold that wraps the product (9) and a mold upper cover (10) arranged on the top of the product outer mold; the bottom of the product outer mold is a sealed bottom; The product (9) is placed inside the product outer mold and is air-sealed by a mold upper cover (10); the mold upper cover (10) is provided with an exhaust gas guide pipe (11) which is in communication with the cavity and airtightly connected.

2. The environmentally friendly carbon / carbon composite material rapid carbonization equipment according to claim 1, characterized in that: The carbonization mold also includes a product inner mold arranged inside the product (9).

3. The environmentally friendly carbon / carbon composite material rapid carbonization equipment according to claim 1, characterized in that: The exhaust gas duct (11) is provided with an exhaust gas duct switch (12).

4. The environmentally friendly carbon / carbon composite material rapid carbonization equipment according to claim 1, characterized in that: The furnace shell (3) is used to fix the first soft thermal insulation layer (1) and the second soft thermal insulation layer (2), and the furnace shell (3) is made of stainless steel.

5. The environmentally friendly carbon / carbon composite material rapid carbonization equipment according to claim 1, characterized in that: The first soft thermal insulation layer (1) and the second soft thermal insulation layer (2) are both made of thermal insulation felt made of aluminum silicate ceramic material.

6. The environmentally friendly carbon / carbon composite material rapid carbonization equipment according to claim 1, characterized in that: The heater fixing bracket (6) comprises a transverse adjustment plate with a transverse adjustment slot (61), an L-shaped mounting plate vertically arranged at the bottom of the transverse adjustment plate for fixing and mounting the heater (5), and a locking bolt fixedly mounted on the top of the furnace shell (3) and cooperating with the transverse adjustment slot (61) for transverse adjustment.

7. The environmentally friendly carbon / carbon composite material rapid carbonization equipment according to claim 1, characterized in that: The carbonization mold is made of graphite.

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