An aerogel modification device

Abstract

The utility model provides a kind of aerogel modification device, including gas generation kettle and modification kettle, the gas generation kettle outside is equipped with first heating jacket, modification kettle is equipped with modifier inlet and modifier gas outlet on the gas generation kettle, the modification kettle includes second kettle body and the second kettle cover that the second kettle body top opening is closed, the second kettle body and the second kettle cover detachably connect, the second kettle body outside is equipped with second heating jacket, the second kettle body bottom is equipped with modifier gas inlet, the modifier gas outlet and the modifier gas inlet are connected by modifier gas pipe. Modification process is carried out using the aerogel modification device of the utility model, modification time can be shortened, production efficiency is improved, the amount of modifier can also be reduced, and production cost is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of aerogel production equipment, and more specifically, to an aerogel modification device. Background Technology

[0002] The preparation of aerogels includes steps such as sol-gel, aging, modification, and drying. Among these, modification is a crucial step in the production process, used to improve the performance of the aerogel. Currently, aerogel production processes are divided into atmospheric pressure drying and supercritical drying processes, and there are also two modification methods: liquid-phase modification and gas-phase modification.

[0003] Liquid-phase modification is commonly used in atmospheric pressure drying processes. The modifying liquid is either a pure modifier or a mixture of modifier and solvent. The process involves immersing the pure gel or a gel reinforced with fibers in the modifying liquid for modification. After modification, drying is performed to obtain an aerogel. Both liquid-phase and gas-phase modification are frequently used in supercritical drying processes. Liquid-phase modification is similar to atmospheric pressure drying, involving solvent replacement and supercritical drying, or direct supercritical drying, to obtain an aerogel. Gas-phase modification involves supercritical drying of the gel to obtain a hydrophilic aerogel. The hydrophilic aerogel and modifier are placed in a sealed container. Heating the container causes the modifier to evaporate into a gas phase. The gas-phase modifier then modifies the surface of the hydrophilic aerogel and continuously diffuses into its interior, ultimately resulting in a hydrophobic aerogel.

[0004] In summary, the two existing modification methods for producing aerogels both involve diffusion in the liquid or gas phase. These methods suffer from long modification times and low production efficiency. Furthermore, the modifiers readily react with water in the liquid or gas phase, leading to their loss and increased production costs. Utility Model Content

[0005] The technical problem this invention aims to solve is how to improve the efficiency of shortening aerogel modification and reduce modifier loss.

[0006] To solve the above-mentioned technical problems, this utility model provides an aerogel modification device, including a gas generating vessel and a modification vessel. The gas generating vessel is provided with a first heating jacket on the outside, and the gas generating vessel is provided with a modifier inlet and a modifier outlet. The modification vessel includes a second vessel body and a second vessel cover that closes the top opening of the second vessel body. The second vessel body and the second vessel cover are detachably connected. The second vessel body is provided with a second heating jacket on the outside, and the modification vessel is provided with a modifier inlet. The modifier outlet and the modifier inlet are connected through a modifier gas supply pipe.

[0007] The aerogel modification device of this invention includes an independently heatable gas generating vessel and a modification vessel. The liquid modifier can be first heated in the gas generating vessel to obtain a high-concentration modifier gas, which is then introduced into the modification vessel. The high-temperature modifier gas directly reacts with the aerogel felt, significantly increasing the reaction temperature and thus shortening the modification time and improving production efficiency. Simultaneously, directly introducing the high-temperature modifier gas into the modification vessel reduces the amount of modifier used, lowering production costs.

[0008] Furthermore, the aerogel modification device also includes a vacuum pump, and the modification vessel is equipped with an extraction port, which is connected to the vacuum pump via an extraction pipe. By drawing a vacuum, the gas inside the modification vessel can be removed, which reduces the consumption of the modifier by substances such as water vapor in the air, and allows the subsequently introduced modifier vapor to directly enter the pores of the aerogel for modification without a slow diffusion process, thus significantly shortening the modification time.

[0009] Furthermore, the modification vessel is equipped with a preheating gas inlet. This inlet is used to introduce hot gas into the vessel to preheat the aerogel felt, which helps to improve the modification efficiency and shorten the modification time.

[0010] Furthermore, the gas generating vessel includes a first vessel body and a first vessel cover, wherein the first vessel body (11) and the first vessel cover are detachably connected or integrally formed.

[0011] Furthermore, a first pressure gauge is installed on the first reactor lid, and a second pressure gauge is installed on the second reactor lid. The pressure gauges allow for monitoring of the pressure inside the gas generating reactor and the modification reactor, which is beneficial for accurately controlling production process parameters.

[0012] Furthermore, a drain port is provided at the bottom of the first vessel. When the gas generator needs maintenance, the remaining material can be discharged from the drain port.

[0013] Furthermore, a first thermometer is installed at the bottom of the first reactor body, and a second thermometer is installed at the bottom of the second reactor body. The thermometers are used to monitor the temperature inside the gas generating reactor and the modification reactor, which helps to accurately control the production process parameters.

[0014] Furthermore, the first vessel lid is equipped with a first sight glass, and the second vessel lid is equipped with a second sight glass. These sight glasses allow operators to observe the reaction process inside the gas generating vessel and the modification vessel, ensuring normal production.

[0015] Furthermore, the second vessel body and the second vessel lid are fixedly connected by eye bolts, clamp bolts, or quick-opening mechanisms. During the modification process, the aerogel felt needs to be placed into the modification vessel first, and the aerogel is removed after the modification reaction is completed. Therefore, the vessel lid needs to be opened and closed frequently. The vessel lid and vessel body are fixed with a structure that is easy to disassemble and assemble, facilitating on-site disassembly and tightening.

[0016] Furthermore, the first heating jacket is covered with a first insulation layer, and the second heating jacket is covered with a second insulation layer. The insulation layer helps improve heating efficiency. Attached Figure Description

[0017] Figure 1 This is a process flow diagram of the aerogel modification device in the embodiments of this utility model.

[0018] Figure 2 This is a schematic diagram of the gas generating vessel in an embodiment of the present invention.

[0019] Figure 3 This is a schematic diagram of the modified reactor in an embodiment of this utility model.

[0020] Explanation of reference numerals in the attached figures:

[0021] 1-Gas generating vessel, 11-First vessel body, 12-First vessel cover, 13-First heating jacket, 14-First insulation layer, 101-Modifier inlet, 102-Modifier outlet, 103-Drain outlet, 104-First pressure gauge, 105-First thermometer, 106-First sight glass, 107-First steam outlet, 108-First steam inlet, 2-Modifying vessel, 21-Second vessel body, 22-Second vessel cover, 23-Second heating jacket, 24-Second insulation layer, 25-Lifting eye bolt, 201-Modifier inlet, 202-Ejection port, 203-Preheating gas inlet, 204-Second pressure gauge, 205-Second thermometer, 206-Second sight glass, 207-Second steam outlet, 208-Second steam inlet, 3-Vacuum pump, 4-Modifier gas delivery pipe, 5-Ejection pipe. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0024] It should be noted that similar symbols and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0025] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0026] Combination Figures 1 to 3 As shown, this embodiment discloses an aerogel modification device, including a gas generating vessel 1 and a modification vessel 2. The gas generating vessel 1 is used to heat a liquid modifier into a gas, and has a liquid modifier inlet 101 and a gas outlet 102. The modification vessel 2 is used to introduce the gas modifier to modify the aerogel felt, and has a gas inlet 201. The gas outlet 102 and the gas inlet 201 are connected by a gas delivery pipe 4.

[0027] Combination Figure 1 As shown, the aerogel modification device also includes a vacuum pump 3. The modification vessel 2 has an exhaust port 202, which is connected to the vacuum pump 3 through an exhaust pipe 5. The vacuum pump 3 can evacuate the modification vessel 2, which is beneficial to improving the reaction efficiency.

[0028] Combination Figure 2 As shown, the gas generating vessel 1 has a specific structure including a first vessel body 11 and a first vessel cover 12, with the first vessel cover 12 sealing the top opening of the first vessel body 11. In this embodiment, the first vessel cover 12 and the first vessel body 11 are detachably connected by fixing bolts. In other embodiments, the gas generating vessel 1 can be an integrated structure, that is, the first vessel cover 12 and the first vessel body 11 are integrally formed.

[0029] The first vessel body 11 is provided with a first heating jacket 13. The lower part of the first heating jacket 13 is provided with a first steam outlet 107 and the upper part is provided with a first steam inlet 108. Steam is introduced into the first heating jacket 13 as a heating medium, which can realize uniform and rapid heating of the modifier liquid in the vessel body. The first heating jacket 13 is wrapped with a first insulation layer 14, which helps to improve heating efficiency.

[0030] In this embodiment, the modifier inlet 101 and the modifier outlet 102 are located on the first vessel cover 12. The liquid enters the first vessel body 11 from the top, avoiding pressure interference and ensuring smooth feeding. The liquid modifier is heated to form high-concentration, high-purity modifier vapor, which is output from the top modifier outlet 102. In other embodiments, the modifier inlet 101 can also be located on the side or bottom of the gas generating vessel 1. The bottom of the first vessel body 11 is provided with a drain outlet 103, which allows residual material to be discharged when the gas generating vessel 1 needs maintenance.

[0031] A first pressure gauge 104 is installed on the first vessel lid 12 to monitor the pressure inside the gas generating vessel 1; a first thermometer 105 is installed at the bottom of the first vessel body 11 to monitor the temperature inside the gas generating vessel 1. The installation of the first pressure gauge 104 and the first thermometer 105 is beneficial for accurately controlling the production process parameters. A first sight glass 106 is also installed on the first vessel lid 12 to allow operators to observe the conditions inside the gas generating vessel 1 and ensure the normal operation of the production process.

[0032] Combination Figure 3 As shown, the modified reactor 2 has a specific structure including a second reactor body 21 and a second reactor cover 22. The second reactor cover 22 closes the top opening of the second reactor body 21, and the two are detachably connected. During the modification process, the aerogel felt needs to be placed into the modified reactor 2 first, and then removed after the modification reaction is completed. Therefore, the reactor cover needs to be opened and closed frequently. In this embodiment, the second reactor cover 22 and the second reactor body 21 are fixed with a lifting eye bolt 25, which facilitates disassembly and tightening. In other embodiments, the second reactor body 21 and the second reactor cover 22 can be connected by a clamp bolt, or by a quick-opening structure such as a pull rod type, button type, rocker type, clamp type, toothed type, compression type, partial ring type, or movable type.

[0033] The second vessel body 21 is provided with a second heating jacket 23. The lower part of the second heating jacket 23 is provided with a second steam outlet 207, and the upper part is provided with a second steam inlet 208. Steam is introduced into the second heating jacket 23 as a heating medium, which can achieve uniform and rapid heating in the vessel body and ensure the modification effect. The second heating jacket 23 is wrapped with a second insulation layer 24, which helps to improve heating efficiency.

[0034] A modifier inlet 201 is located on the second vessel lid 22, allowing the modifier gas to enter from the top and disperse evenly within the vessel. An exhaust port 202 is also located on the second vessel lid 22, allowing gas to be extracted from the modification vessel 2 when the vacuum pump 3 is operating. A preheating gas inlet 203 is also provided at the bottom of the second vessel body 21, used to introduce hot gas into the second vessel body 21 to preheat the aerogel material inside, improving modification efficiency. The hot gas is discharged through the exhaust port 202.

[0035] A second pressure gauge 204 is installed on the second vessel lid 22 to monitor the pressure inside the modification vessel 2; a second thermometer 205 is installed at the bottom of the second vessel body 21 to monitor the temperature inside the modification vessel 2. The installation of the second pressure gauge 204 and the second thermometer 205 is beneficial for accurately controlling the production process parameters. A second sight glass 206 is also installed on the second vessel lid 22 to allow operators to observe the conditions inside the modification vessel 2 and ensure the normal operation of the production process.

[0036] The aerogel modification apparatus provided in the above embodiments has independent gas generating vessel 1 and modification vessel 2, which can be heated as needed. The liquid modifier can be heated in gas generating vessel 1 to obtain a high-concentration modifier gas, which is then introduced into modification vessel 2. The aerogel material in modification vessel 2 can be preheated. The high-temperature modifier gas and aerogel material directly undergo a modification reaction upon contact, significantly increasing the reaction temperature and thus shortening the modification time and improving production efficiency. Simultaneously, using high-temperature modifier gas directly in modification vessel 2 reduces the amount of modifier used, lowering production costs. The modification apparatus also includes a vacuum pump 3. Before introducing the modifier gas into modification vessel 2, a vacuum is drawn to remove other gases from the vessel. This reduces the consumption of the modifier by substances such as water vapor in the air and allows the subsequently introduced modifier vapor to directly enter the pores of the aerogel for modification without a slow diffusion process, significantly shortening the modification time. This aerogel modification device has a simple structure and can be used to upgrade existing production equipment. It is highly effective in improving production efficiency and reducing production costs, making it very suitable for industrial application.

[0037] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. An aerogel modification apparatus, characterized by, The apparatus includes a gas generating vessel (1) and a modifying vessel (2). The gas generating vessel (1) is provided with a first heating jacket (13) on its exterior. The gas generating vessel (1) is provided with a modifier inlet (101) and a modifier outlet (102). The modifying vessel (2) includes a second vessel body (21) and a second vessel cover (22) that closes the top opening of the second vessel body (21). The second vessel body (21) and the second vessel cover (22) are detachably connected. The second vessel body (21) is provided with a second heating jacket (23) on its exterior. The modifying vessel (2) is provided with a modifier inlet (201). The modifier outlet (102) and the modifier inlet (201) are connected by a modifier gas supply pipe (4).

2. The aerogel modification device of claim 1, wherein, It also includes a vacuum pump (3), and the modified vessel (2) is provided with an air extraction port (202), which is connected to the vacuum pump (3) through an air extraction pipe (5).

3. The aerogel modification device of claim 1, wherein, The modified reactor (2) is equipped with a preheating gas inlet (203).

4. The aerogel modification apparatus of any one of claims 1-3, wherein, The gas generating vessel (1) includes a first vessel body (11) and a first vessel cover (12), which are detachably connected or integrally formed.

5. The aerogel modification apparatus of claim 4, wherein, The first pressure gauge (104) is provided on the first lid (12), and the second pressure gauge (204) is provided on the second lid (22).

6. The aerogel modification apparatus of claim 4, wherein, The bottom of the first vessel body (11) is provided with a drain port (103).

7. The aerogel modification device of claim 4, wherein, The bottom of the first vessel (11) is provided with a first thermometer (105), and the bottom of the second vessel (21) is provided with a second thermometer (205).

8. The aerogel modification device of claim 4, wherein, The first lid (12) is provided with a first sight glass (106), and the second lid (22) is provided with a second sight glass (206).

9. The aerogel modification device of claim 1, wherein, The second vessel body (21) and the second vessel cover (22) are fixedly connected by eye bolts (25), caliper bolts or quick-opening structures.

10. The aerogel modification device of claim 1, wherein, The first heating jacket (13) is wrapped with a first insulation layer (14), and the second heating jacket (23) is wrapped with a second insulation layer (24).

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