CN210357097U

CN210357097U - Gel drying device without inner container

Info

Publication number: CN210357097U
Application number: CN201920315871.0U
Authority: CN
Inventors: 王天赋; 陈庚; 吴茂玲
Original assignee: Shenzhen Aerogel Technology Co ltd
Current assignee: Shenzhen Aerogel Technology Co ltd
Priority date: 2019-03-13
Filing date: 2019-03-13
Publication date: 2020-04-21
Anticipated expiration: 2029-03-13

Abstract

The utility model relates to a gel drying device without an inner container, which comprises a shell (13) and a drying accelerator (4-4) arranged in the shell; the method is characterized in that: a cavity directly formed by the inner wall of the shell (13) is a working space of the gel drying device (4B) without the inner container, the inside of the working space is sealed, and the conveying device (11) penetrates through the working space; the shell (13) is provided with a cold and heat source conveying pipeline, a gas channel, a recovery channel and a discharge channel which are communicated with the inside of the working space, the cold and heat source conveying pipeline is communicated with a cold and heat source system (7), the gas channel is communicated with a gas supply system (8), the recovery channel is communicated with a recovery system (6), and the discharge channel is communicated with a waste treatment system (5). The gel is dried after being modified in the normal-pressure continuous aerogel preparation process, the process is simple, the preparation process requirement is low, flexible preparation in each working section is facilitated, and the product cost is low.

Description

Gel drying device without inner container

Technical Field

The utility model relates to an aerogel preparation technical field, concretely relates to ordinary pressure continuous type prepares equipment and method of aerogel.

Background

Aerogel is a new type of nano, porous, low density, amorphous material with a continuous three-dimensional network structure. The aerogel has many unique properties, such as high porosity, high specific surface area, low density, low thermal conductivity, excellent sound insulation performance and the like, has magical characteristics in various fields of thermal, optical, electrical, chemical and the like, and has very wide application prospects.

The supercritical drying technology is the technology for preparing the aerogel in batches at the earliest time, is mature, and is also the technology adopted by aerogel enterprises at home and abroad at present. However, because the supercritical pressure and temperature are high, for example, the supercritical point of methanol is about 239.4 ℃ and 81 atmospheres, and in addition, the supercritical autoclave cannot realize full-automatic continuous production, the autoclave must be opened, and the aerogel product cannot be continuously conveyed by lifting the material, so that the supercritical technology has the defects of expensive high-pressure high-temperature equipment, high safety risk, low efficiency, high cost, complex process and the like. The normal pressure drying is a novel aerogel preparation process, is the aerogel batch production technology which is the most active in current research and has the greatest development potential, and compared with the supercritical technology, the normal pressure technology has the advantages of low equipment investment, low production cost, excellent product performance, safety, simplicity, convenience, continuous production realization and the like, and is a trend of aerogel research and development and production. Literature and patent reports that aerogel products are prepared by normal pressure drying, but the method has the defects of long gelation time, high modifier loss caused by introducing a large amount of organic solution into sol, complex operation of the method, long production period, low efficiency and the like, increases the requirements on the tightness, explosion resistance, static resistance and the like of equipment, increases the cost and also reduces the production safety.

Meanwhile, in the existing silica aerogel production method, the organosilicon (tetraethoxysilane, methyl orthosilicate and polysiloxane) is mostly adopted as a raw material and prepared by a supercritical drying method or a normal pressure drying method in combination with the existing patent technology and literature reports. The supercritical method can be divided into ethanol supercritical drying and carbon dioxide supercritical extraction drying, both raw materials are organic silicon ester, and the methods have the problems of very expensive raw materials, toxicity, complex process, low safety and the like, and seriously restrict the large-scale production and application of the silicon dioxide aerogel. The method for producing the aerogel by adopting the normal pressure method can adopt water glass as a raw material to prepare the silicon dioxide aerogel, obviously reduces the cost of the raw material and the complexity of equipment, but adopts the water glass to prepare the silicon dioxide aerogel, often with the help of an ion exchange resin, so as to prepare a silicic acid solution, and then adds an alkaline catalyst to make the silicic acid solution into gel. And then repeatedly washing the obtained gel with hot water, and preparing the silicon dioxide aerogel under normal pressure after organic solvent replacement and surface methyl silanization reaction. Patent application publication No. CN102167337A discloses that alkali silicate (sodium silicate, potassium silicate) is used as silicon source, water and ethylene glycol are added for dilution, then inorganic acid is added for full reaction for 1-5 hours, then the pH value is adjusted to 2-4, water or alcohol or the mixture thereof is repeatedly used for washing until the content of sodium ion or potassium ion is below 0.1%, and finally the rapid dehydration drying is carried out at the temperature of 100-400 ℃. The method has the disadvantages of complex operation, long production period and low efficiency, and a large amount of salt-containing wastewater is generated in the preparation process. In addition, after the gel is formed, a solvent replacement mode is adopted, ethanol is added into silica sol to directly prepare the alcogel, and the obtained gel still needs to be soaked in ethanol solutions with different concentrations after the gel is formed. Because the process is alcohol-carrying and chlorine-carrying, the durability of the equipment and the requirement on the inner container of the equipment are very high.

For most of the existing devices for producing the aerogel containing alcohol and chlorine, an inner container needs to be arranged in a shell of the devices in order to ensure production safety, and the devices have limitation requirements on an acceleration mode, and ignition and even explosion can be generated when the acceleration mode similar to radio frequency radiation is adopted, so that great hidden production troubles are realized.

The drying link is an essential important link in the aerogel production link as a matching link of the modification link, if the modification link and the drying link are integrally arranged, the rapid and efficient production can be realized, but the technical requirements of the modification process and the drying process are higher.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to adopt a no inner bag gel drying device, carry out the drying after modifying at the ordinary pressure continuous type preparation aerogel in-process to the gel, simple process, preparation technology requires low, the nimble preparation of every workshop section of being convenient for, product low cost.

In order to solve the technical problem, the utility model discloses a following technical scheme:

a gel drying device without an inner container comprises a shell (13) and a drying accelerator (4-4) in the shell; the method is characterized in that: a cavity directly formed by the inner wall of the shell (13) is a working space of the gel drying device (4B) without the inner container, the inside of the working space is sealed, and the conveying device (11) penetrates through the working space; the shell (13) is provided with a cold and heat source conveying pipeline, a gas channel, a recovery channel and a discharge channel which are communicated with the inside of the working space, the cold and heat source conveying pipeline is communicated with a cold and heat source system (7), the gas channel is communicated with a gas supply system (8), the recovery channel is communicated with a recovery system (6), and the discharge channel is communicated with a waste treatment system (5).

According to the technical scheme, the acceleration mode of the drying accelerator (4-4) is one or more of hot air, infrared radiation and heat conduction.

According to the technical scheme, the drying accelerator (4-4) is arranged at the upper part or the lower part of the working space, or is arranged around the inner wall of the tunnel type pipe body of the working space in the circumferential direction.

According to the technical scheme, a washing device (4-5) is further arranged at the front section of the drying accelerator (4-4) along the material conveying direction in the working space, and the washing device (4-5) is in a spraying type or a soaking type; the shell (13) is also provided with an out-of-box dust removal device (4-6) communicated with the inside of the working space; the dust removing device comprises one or more of electrostatic dust removal, blowing dust removal and gravity dust removal, and at least comprises a dust bag or a dust collecting box.

According to the technical scheme, the gas device (4-1) is arranged in the shell (13), and the gas supply system (8) is communicated with the gas device (4-1) through the gas channel so as to be communicated with the working space in the shell (13).

According to the technical scheme, the liner-free gel drying device (4B) is positioned behind the modification device (4A) independent of the shell (13); and at least a raw and auxiliary material system (1) and a gel system (2) are arranged in front of the modification device (4A) in sequence, or the raw and auxiliary material system (1), the gel system (2) and the gel activation system (3) are arranged in sequence.

According to the technical scheme, the method is suitable for the chlorine-free and alcohol-free process of the aerogel.

According to the technical scheme, the conveying device (11) is continuously and integrally arranged or in a sectional butt joint mode in the working space of the gel drying device without the inner container or in each space of the whole aerogel production device comprising the conveying device.

According to the technical scheme, the conveying devices (11) are made of the same or different materials; the conveying device (11) is in a crawler type or a pipeline type.

The gel drying method adopting the inner container-free gel drying device is characterized in that: the gel which is or is not activated enters a shell (13) of a gel drying device (4B) without an inner container through a conveying device (11) after being modified, the gel is cleaned by a cleaning device (4-5) in a working space in the shell (13), and after the cleaning of redundant reagents and impurities is finished, a drying accelerator (4-4) dries the gel through one or more of hot air, infrared radiation and heat conduction.

According to the technical scheme, the drying is completed for 10S-5h, and the drying temperature is 30-500 ℃.

According to the technical scheme, in the drying process, the cold and heat source system (7) is communicated with the cold and heat source conveying pipeline to supply heat and cool to the working space and the raw and auxiliary material system (1); the air supply system (8) supplies air to the working space and the raw and auxiliary material system (1); three wastes generated in the whole working section enter a waste treatment system (5); and the recovery system (6) collects materials in the reaction process for reuse.

The foreseeable steps not listed in the present invention further include: adding raw and auxiliary materials into a raw and auxiliary material system before the activation step; then the conveying device starts to work to drive the raw and auxiliary materials to enter the gel system, and curing and aging are promoted in the gel system through one or more modes of pH adjustment, heat conduction, radio frequency radiation, infrared radiation and sound waves, so that the curing and aging time is shortened. The utility model discloses a modification can adopt the activation step, also can not adopt the activation step, greatly increased technology flexibility. Meanwhile, the modification time can be set at will.

Therefore, the drying device after gel modification is invented aiming at the drying link of the aerogel chlorine-free and alcohol-free process, is suitable for preparing the aerogel in a normal-pressure continuous mode, can realize efficient continuous preparation of the aerogel, and solves the dilemma of continuous production of the aerogel in a normal-pressure technology. The utility model discloses realize gel material's continuous modification and drying with continuous type tunnel furnace form reaction space, promote the preparation efficiency of aerogel by a wide margin.

The aerogel chlorine-free and alcohol-free process applicable to the utility model is the prior art, which is shown in detail in the Chinese published patent application CN 108314411A of the applicant, and adopts the chlorine-free and alcohol-free process to prepare the silicon dioxide aerogel composite material.

Compare with most current gel drying device, the utility model discloses following beneficial effect has:

the utility model discloses to the drying link of gel chlorine-free alcohol-free technology and design, do not set up the inner bag in drying equipment main part or reaction space. Meanwhile, because the modification and drying systems are independently arranged, the modification time can be randomly set or adjusted to greatly ensure the full reaction, and the activation link can be omitted or the activation time can be shortened; the modification and drying process and the efficiency technology have no high requirements, in addition, the activation link can be omitted or the activation time can be shortened, and each section can be prepared according to the actual situation.

Secondly, the drying accelerator can adopt one or more of hot air, infrared radiation and heat conduction, and the equipment manufacture is more flexible.

And thirdly, the structure without the inner container avoids the disadvantages that the polymer inner container has low use temperature, and the ceramic and glass inner containers are easy to break and difficult to process.

Finally, compare in the bilayer structure who is equipped with the inner bag, when the equipment of the box internally mounted of reaction space broke down, be convenient for investigate the trouble source to it is convenient to maintain.

Drawings

Figure 1 is according to the utility model discloses a no inner bag gel drying device overall arrangement structure chart in aerogel preparation system.

Fig. 2 is an internal structure diagram of the gel drying device without the inner container according to the utility model.

Detailed Description

The gel drying device without the inner container implemented by the utility model is shown in figure 2, and the gel system formed by the device is shown in figure 1. The liner-free gel drying device 4B is positioned in front of the modification device 4A, is arranged in front of the modification device 4A and at least behind the raw and auxiliary material system 1 and the gel system 2, or is selectively arranged behind the raw and auxiliary material system 1, the gel system 2 and the gel activation system 3; the pipe cavity directly formed by the shell of the liner-free gel drying device 4B is a working space, namely the shell 13 is a single-layer shell, and the innermost inner wall and the innermost outer wall are integrated and are not liners independent of the outer wall. All equipment, accessories and supporting facilities meet the requirements of explosion prevention and safety. Rely on the utility model discloses a device can high-efficient continuous production multiple aerogel goods, including but not limited to aerogel powder, aerogel felt, aerogel board, aerogel adhesive tape.

Working spaces of the gel system 2, the gel activation system 3, the modification device 4A and the liner-free gel drying device 4B are arranged to be communicated with each other or closed respectively, a conveying device 11 is arranged in each working space, and the conveying device 11 is in butt joint with the raw and auxiliary material system 1; cold and heat source conveying pipelines, gas channels, a recovery channel and a discharge channel which are communicated with the working spaces are arranged on the gel system 2, the gel activation system 3, the modification device 4A and the inner container-free gel drying device 4B, the cold and heat source conveying pipelines are communicated with a cold and heat source system 7, the gas channels are communicated with a gas supply system 8, the recovery channel is communicated with a recovery system 6, and the discharge channel is communicated with a waste treatment system 5. Conventional facilities such as recovery, waste treatment, cold and heat sources and the like are also provided in the raw material and auxiliary material system 1 as required.

Conveying device 11 in the working space of no inner bag gel drying device 4B is used for conveying supplementary product and does not destroy the sealed setting of working space, and conveying device 11 is for example common transport mode such as crawler-type conveyor or pipeline transport. The conveying device 11 is one or more of polymer, ceramic, glass and metal; the defect that only non-metal materials can be used due to the production safety consideration of the traditional aerogel conveying equipment is overcome, and the use selectivity is higher and more flexible. The conveying device 11 is continuously and integrally arranged or is in butt joint in sections in each working space to form a continuous conveying device.

The liner-free gel drying device 4B shown in FIG. 2 comprises a shell 13 and a drying accelerator 4-4 in the shell; the acceleration mode of the drying accelerator 4-4 is one or more of hot air, infrared radiation and heat conduction. The working space directly formed by the inner wall of the shell 13 is sealed, and air tightness and safety are guaranteed.

A washing device 4-5 is also arranged at the front section of the drying accelerator 4-4, and the washing device 4-5 is a spraying device or a soaking device; the shell 13 is also provided with an out-box dust removal device 4-6 communicated with the inside of the working space; the dust removing device 4-6 comprises one or more of electrostatic dust removal, air blowing dust removal and gravity dust removal, and at least comprises a dust bag or a dust collecting box.

A gas device 4-1 is arranged in the shell 13, and the gas supply system 8 is communicated with the gas device 4-1 through a gas channel so as to be communicated with the working space in the shell 13. The waste treatment system 5, the recovery system 6 and the cold and heat source system 7 are all communicated with the working space in the shell 13.

The liner-free gel drying device 4B can be provided with a process control system formed by a temperature sensor, a pressure sensor and a control system, so that intellectualization is realized.

Arranging a curing and aging accelerator in a working space of the gel system 2, wherein the curing and aging accelerator is accelerated in one or more of radio frequency radiation, sound wave, infrared radiation, vibration and heat conduction; one or more of heat conduction, infrared radiation, vibration, radio frequency radiation and sound wave activation accelerators are arranged in the working space of the gel activation system 3.

Because the utility model adopts the chlorine-free and alcohol-free process, the gel drying device 4B is adoptedThe process method is characterized in that a liner is not arranged in the space, the process method is disclosed in China published patent application CN 108314411A of the applicant, and a chlorine-free and alcohol-free process is adopted to prepare the silicon dioxide aerogel composite material, wherein a water-soluble silicon source is one or a combination of more of water glass, water-based silica sol, methyl lithium silicate, methyl sodium silicate, methyl potassium silicate, lithium metasilicate, sodium silicate, sodium metasilicate, potassium silicate or potassium metasilicate; perchloric acid is H₂SO₄、HNO₃、HF、HBr、HI、H₂SO₃、HNO₃、H₃PO₄、H₃PO₂、H₃BO₃One or a combination of several of them. The desalting process adopts one or more of ion exchange resin, freezing crystallization, evaporation, concentration and crystallization and membrane treatment. The additive can be one or a combination of several of an infrared opacifier, a flame retardant or a flexibilizer; the infrared opacifier can be one or more of ferrous oxide, carbon black, titanium dioxide, potassium hexatitanate whisker, zinc oxide, zirconium oxide, aluminum oxide, magnesium oxide, aluminum silicate, magnesium silicate, calcium silicate, zinc borate, magnesium hydroxide, aluminum hydroxide and ferric hydroxide; the flame retardant can be one or a mixture of magnesium hydroxide, aluminum hydroxide, zinc borate, ammonium polyphosphate, red phosphorus, antimony oxide or molybdenum compound; the toughening agent can be one or more of polyethylene, polypropylene, polystyrene, polyvinyl alcohol, polyvinylpyrrolidone, polyacrylamide, polyacrylonitrile, polycarbonate, polyethersulfone, polyformaldehyde, polymethyl methacrylate, polygalacturonic acid, poly-L-rhamnogalacturonic acid and polyimide; the fiber reinforcement is inorganic fiber or organic fiber.

The structure and the working principle of each part are as follows:

the raw and auxiliary material system 1 can realize raw and auxiliary material storage, base material preparation, preparation of sol with a specified formula and compounding of the sol and the base material; the raw and auxiliary material system 1 comprises a preparation module 1A of sol with a specified formula, a preparation module 1B of a base material, a sol base material composite preparation module 1C and a raw and auxiliary material storage module 1D. The raw material and auxiliary material system can be any combination of 1A, 1B, 1C and 1D, and can also be any single module of 1A, 1B, 1C and 1D. This raw and auxiliary materials system 1 can realize the conversion production of aerogel product of multiple form, for example if add the substrate then can produce products such as aerogel felt, if do not add the substrate then can directly produce aerogel powder. All modules of the device can be increased or enlarged, and the simultaneous production of products with different forms can be realized.

Further, the base material added in the raw material auxiliary system 1 may be one or more of a fiber material (organic fiber material, inorganic fiber material), a particle material, a whisker material, a metal material, a porous material, and a polymer material. The raw and auxiliary material system 1 can realize the functions of production, storage, preparation, conveying and the like of materials and supply for subsequent production. Meanwhile, a collecting function and a recovery device can be designed, so that substances dropped or poured out in the production, storage and conveying processes can be effectively collected and recycled. The raw and auxiliary material system 1 can be provided with a control system to realize intellectualization. The raw materials mainly comprise one or more of a glue source, an additive, an activating agent, an infrared opacifier, a modifier and a base material, and the auxiliary materials mainly comprise one or more of water, a catalyst, a diluent, a displacing agent, a packaging material, a post-processing material, an acid, an alkali, a humectant, a polymerization inhibitor, a smoke suppressant and a crosslinking agent.

The conveyor 11 is a conventional conveyor such as a crawler conveyor or a pipe conveyor. At least through the gel system 2, the gel activation system 3 and the modification and drying system 4, the material of the conveying device 11 may be one or more of polymer, ceramic, glass and metal.

The gel activation system 3 is mainly used for activating chemical functional groups in wet gel, improving the reaction activity of the wet gel and accelerating the modification speed of the rear section. The gel activation system 3 is provided with a storage device and a collection device which are communicated with the working space of the gel activation system, the storage device is used for storing or transferring raw and auxiliary materials, the collection device is used for effectively collecting and treating substances dripped or poured out in the system, and the conveying device 11 passes through the working space of the gel activation system 3 for subsequent production.

The activator can be one or more of surfactant, salt, acid, alkali, alcohol, ether, ester, phenol, benzene, enol, hydrocarbon, alkane, alkyne, sulfide, heterocyclic compound, amine, ionic liquid, water, metal ion, metal oxide, complexing agent and enzyme. The activation temperature is preferably 0-300 ℃, and the activation is completed within 10S-168 h. The gel activation system can be provided with a control system to realize intellectualization.

The method for drying the gel by using the system of the utility model comprises the following steps:

the gel which is or is not activated enters a shell 13 of the liner-free gel drying device 4B through a conveying device 11 after being modified, the gel is cleaned by a washing device 4-5 in a working space in the shell 13, and after the cleaning of redundant reagents and impurities is finished, the gel is dried by a drying accelerator 4-4 through one or more of hot air, infrared radiation and heat conduction.

The whole working time in the liner-free gel drying device 4B is 10S-5h, the drying temperature is 30-500 ℃, and the drying time is preferably 10S-5 h. Compared with the integrated drying and modification process integrating drying and modification, because the modification and drying links are independently arranged, the modification time can be prolonged to be infinite, the modification method and the efficiency technology have no high requirements, in addition, the front activation system 3 can not be started or assembled, each working section can be prepared according to the actual situation, and the advantages of low preparation process requirement and convenience for flexible preparation of each working section are achieved.

In the process, the cold and heat source system 7 is communicated with the cold and heat source conveying pipeline to supply heat and cool to each working space and the raw and auxiliary material system 1; the air supply system 8 supplies air to each working space and the raw and auxiliary material system 1; the three wastes generated in the whole working section enter a waste treatment system 5; and the recovery system 6 collects materials in the reaction process for reuse.

The waste treatment system 5 can realize the recovery treatment of three wastes; the waste treatment system is used for treating three wastes (waste liquid, waste gas and waste solid) which are generated in the whole production process and cannot be recycled. The waste treatment system 5 can be designed into a control system to realize intellectualization.

The recovery system 6 can realize the recovery, regeneration and recycling of materials in the whole production device; the recovery mode of the recovery system 6 can be one or more of chemical method, physical method and biological method, including but not limited to direct collection, extraction, condensation, liquid separation, evaporation concentration, filtration, acid-base neutralization, rectification, screening, adsorption desorption and centrifugation. The recovery system 6 can be provided with a control system to realize intellectualization.

The cold and heat source system 7 provides a heat source and a cold source for the whole production device; the cold and heat source system 7 can be designed with a control system to realize intellectualization.

The gas supply system 8 supplies gas to the entire production plant. The gas supply system is used for supplying gas to the production line. The air supply system can be designed into a control system, and intellectualization is realized.

The gel system 2 may enable sol curing and aging of the gel material.

Adopt the utility model discloses afterwards, can high efficiency's modified drying, simple process, production cycle are short, reaction process is controllable, and product low cost can realize equipment automation and the continuous production of aerogel product.

More completely, the method for preparing aerogels according to the present invention comprises the following steps:

s1: adding raw and auxiliary materials into the raw and auxiliary material system 1; then the conveying device 11 is started to work;

s2: the raw and auxiliary materials enter the gel system 2, curing and aging are promoted in the section through one or more modes of pH adjustment, heat conduction, radio frequency radiation, infrared radiation, sound waves and vibration, the curing and aging time is shortened, the curing and aging temperature is preferably 0-300 ℃, curing is completed within 10S-5h, and aging is completed within 1min-48 h;

s3: the gel cured and aged by the gel system 2 is driven by the conveying device 11 to enter the gel activation system 3, so that the activation of chemical functional groups in the wet gel is realized, the reaction activity is improved, the modification speed of the later section is accelerated, the activation temperature is preferably 0-300 ℃, and the activation is completed within 10S-168 h;

s4: the solidified and aged gel enters the modification device 4A with or without the step S3, and the modification accelerator 4-2 accelerates modification in the working space of the modification device 4A by one or more modes of sound wave, infrared radiation, vibration and heat conduction, so that the modification efficiency is improved; after the modification, the gel enters the inner container-free gel drying device 4B independent of the outside of the modification device 4A for drying, the inner container-free gel drying device 4B finishes the drying for 10S-5h by one or more of hot air, infrared radiation and heat conduction, and the drying temperature is 30-500 ℃; the modification process and the drying process are independent.

Because the modification and drying links are independently arranged, the modification time can be prolonged to be infinite (including but not limited to any time length of 1min-2h, 2h-10h, 10h-24h, 24h-48h and 48h-168 h), the modification method and the efficiency technology have no high requirements, in addition, the front activation system 3 can not be started or assembled, each section can be prepared according to the actual situation, and the advantages of low preparation process requirement and convenience for flexible preparation of each section are achieved.

S5: in each step, the cold and heat source system 7 is communicated with the cold and heat source conveying pipeline to supply heat and cool to each working space and the raw and auxiliary material system 1; the air supply system 8 supplies air to each working space and the raw and auxiliary material system 1; the three wastes generated in the whole working section enter a waste treatment system 5; and the recovery system 6 collects materials in the reaction process for reuse.

Further, a product post-processing system 9 and a product packaging system 10 are also provided after step S5; and sequentially realizing the post-processing and packaging of the aerogel product.

In the embodiment of fig. 1, the product adding post-processing system 9 and the product packaging system 10 are shown as not being provided; the product post-processing system 9 can realize the post-processing of the aerogel product; including but not limited to one or more of molding, property control processing, pressing, packaging, filling, dispersing, grinding and sorting. The product post-processing system 9 comprises a storage device, a conveying device and a collecting device, so that the product is conveyed and stored, and substances generated in the system are effectively collected and processed. The product post-processing system 9 can be designed with a control system to realize intellectualization.

The product packaging system 10 is used for the collection and packaging of the final aerogel product. The product packaging system 10 includes a storage device and a delivery device to enable storage and delivery of the product and to efficiently collect and process the materials generated in the system. The product packaging system can be designed into a control system, and intellectualization is realized.

Claims

1. A gel drying device without an inner container comprises a shell (13) and a drying accelerator (4-4) in the shell; the method is characterized in that: a cavity directly formed by the inner wall of the shell (13) is a working space of the gel drying device (4B) without the inner container, the inside of the working space is sealed, and the conveying device (11) penetrates through the working space; a cold and heat source conveying pipeline, a gas channel, a recovery channel and a discharge channel which are communicated with the interior of the working space are arranged on the shell (13), the cold and heat source conveying pipeline is communicated with the cold and heat source system (7), the gas channel is communicated with the gas supply system (8), the recovery channel is communicated with the recovery system (6), and the discharge channel is communicated with the waste treatment system (5); a washing device (4-5) is further arranged at the front section of the drying accelerator (4-4) along the material conveying direction in the working space, and the washing device (4-5) is of a spraying type or a soaking type; the shell (13) is also provided with an out-of-box dust removal device (4-6) communicated with the inside of the working space; the dust removing device comprises one or more of electrostatic dust removal, blowing dust removal and gravity dust removal, and at least comprises a dust bag or a dust collecting box.

2. The liner-free gel drying apparatus of claim 1, wherein: the acceleration mode of the drying accelerator (4-4) is one or more of hot air, infrared radiation and heat conduction.

3. The liner-free gel drying apparatus of claim 1, wherein: the drying accelerator (4-4) is arranged at the upper part or the lower part of the working space or is arranged around the inner wall of the tunnel type pipe body of the working space in the circumferential direction.

4. The liner-free gel drying apparatus of claim 1, wherein: a gas device (4-1) is arranged in the shell (13), and the gas supply system (8) is communicated with the gas device (4-1) through a gas channel so as to be communicated with a working space in the shell (13).

5. The liner-free gel drying apparatus of claim 1, wherein: the inner container-free gel drying device (4B) is positioned behind the modification device (4A) which is independent of the outside of the shell (13); and at least a raw and auxiliary material system (1) and a gel system (2) are arranged in front of the modification device (4A) in sequence, or the raw and auxiliary material system (1), the gel system (2) and the gel activation system (3) are arranged in sequence.

6. The liner-free gel drying apparatus of claim 1, wherein: the conveying device (11) is continuously arranged in a working space in an integrated mode or in a segmented butt joint mode.

7. The liner-free gel drying apparatus of claim 1, wherein: the materials of the conveying devices (11) are the same or different; the conveying device (11) is in a crawler type or a pipeline type.