RTO combined honeycomb ceramic heat accumulator and production process thereof

Abstract

The invention belongs to the technical field of ceramic heat accumulators, and relates to an RT0 combined honeycomb ceramic heat accumulator and a production process thereof. Comprising the following steps: mixing aluminum oxide powder, diatomite, expanded perlite, rare earth oxide, carbon nanofibers, kaolin, quartz sand, titanium dioxide, boron nitride powder, silicon carbide powder, zirconium oxide powder, aluminum oxide fibers, glass powder, yttrium-stabilized zirconium oxide, aluminum oxide hollow spheres and aluminum borate whiskers; drying the mixed material, finely grinding the dried material by using a ball mill, and screening by using a screen; the sieved mixture is put into mixing equipment, 2% of plasticizer and 1% of preservative are added for mixing, and mixed pug is obtained; and standing the mixed pug to obtain a blank. The service life of the heat accumulator is prolonged, and the heat exchange efficiency of the heat accumulator is improved.

Description

Technical Field

[0001] The present application relates to the technical field of ceramic thermal storage bodies, and in particular to an RTO combined honeycomb ceramic thermal storage body and a production process thereof. Background Art

[0002] With the increasing awareness of environmental protection and the continuous increase in energy consumption, heat recovery and utilization has become an important research direction in the current energy field. As a highly efficient and environmentally friendly organic waste gas treatment equipment, the performance of the core component of the regenerative thermal incinerator (RTO), the honeycomb ceramic thermal storage body, directly affects the heat recovery efficiency and treatment effect of the RTO.

[0003] Although the traditional honeycomb ceramic thermal storage body production process can meet basic usage requirements, it still needs to be optimized in terms of material ratio, molding process and firing system.

[0004] For example, the materials used in traditional processes are relatively single, making it difficult to take into account the thermal performance, mechanical strength, thermal shock resistance and other requirements of the thermal storage body. In addition, the accuracy and efficiency of the molding process also directly affect the final performance of the thermal storage body. Summary of the invention

[0005] The purpose of this application is to solve the shortcomings existing in the prior art, and to propose an RTO combined honeycomb ceramic thermal storage body and its production process, which are mixed with a variety of high-performance inorganic non-metallic materials, including alumina powder, diatomaceous earth, expanded perlite, etc., so that the final honeycomb ceramic thermal storage body has significant improvements in thermal stability, corrosion resistance, mechanical strength, etc. This material combination not only improves the service life of the thermal storage body, but also enhances its heat exchange efficiency.

[0006] In order to achieve the above objectives, the technical solution adopted in this application is: In a first aspect, a production process of an RTO combined honeycomb ceramic thermal storage body is provided, comprising the following steps: Alumina powder, diatomaceous earth, expanded perlite, rare earth oxide, nano carbon fiber, kaolin, quartz sand, titanium dioxide, boron nitride powder, silicon carbide powder, zirconium oxide powder, alumina fiber, glass powder, yttrium stabilized zirconium oxide, alumina hollow spheres and aluminum borate whiskers are mixed; The mixed materials are dried, finely ground using a ball mill, and sieved through a sieve; The sieved mixture is put into a mixing device, and 2% of a plasticizer and 1% of a preservative are added for mixing to obtain a mixed mud material; The mixed clay material is allowed to stand to obtain a blank; The blank is extruded through an extrusion molding machine to form a green body with a honeycomb structure; The extruded green body is naturally dried, the dried green body is trimmed, and the trimmed green body is placed in a kiln for high-temperature firing to obtain a honeycomb ceramic heat storage body.

[0007] Further, alumina powder, diatomaceous earth, expanded perlite, rare earth oxide, nano-carbon fiber, kaolin, quartz sand, titanium dioxide, boron nitride powder, silicon carbide powder, zirconium oxide powder, alumina fiber, glass powder, yttrium-stabilized zirconium oxide, alumina hollow spheres and aluminum borate whiskers are mixed according to the following weight percentages: Alumina powder 30%-40%, diatomaceous earth 10%-15%, expanded perlite 5%-10%, rare earth oxides 3%-5%, nano carbon fibers 3%-5%, kaolin 5%-10%, quartz sand 5%-10%, titanium dioxide 3%-5%, boron nitride powder 1%-5%, silicon carbide powder 1%-5%, zirconium oxide powder 1%-4%, alumina fiber 0.5%-2%, glass powder 1%-3%, yttrium stabilized zirconia 1%-4%, alumina hollow spheres 1%-3%, aluminum borate whiskers 0.5%-2%.

[0008] Furthermore, the sieve is 180 mesh.

[0009] Furthermore, when the mixed material is dried, the mixing temperature is 80° C. and the drying time is 4 hours.

[0010] Furthermore, the mixing time is 30 minutes.

[0011] Furthermore, when the trimmed green body is placed in a kiln for high-temperature firing, the temperature is increased to 1300° C. at a heating rate of 5° C. / min and the temperature is maintained for 4 hours.

[0012] Furthermore, when the mixed mud material is left to stand, the steps specifically include: The mixed clay was placed in an environment with a constant temperature of 25°C and a relative humidity of 60% for 24 hours.

[0013] Furthermore, the plasticizer is dibutyl phthalate.

[0014] Furthermore, in the green body of the honeycomb structure, the honeycomb aperture size is 3-4 mm and the wall thickness is 1-2 mm.

[0015] In a second aspect, an RTO combined honeycomb ceramic thermal storage body is prepared by the production process.

[0016] Compared with the prior art, this application has the following beneficial effects: 1. By selecting a variety of high-performance inorganic non-metallic materials for mixing, including alumina powder, diatomaceous earth, expanded perlite, etc., the final honeycomb ceramic thermal storage body has significantly improved thermal stability, corrosion resistance, mechanical strength, etc. This material combination not only improves the service life of the thermal storage body, but also enhances its heat exchange efficiency.

[0017] 2. Through drying, fine grinding and screening, the uniformity and fineness of the raw materials are ensured, laying a good foundation for the subsequent molding and firing process. This refined treatment helps to reduce the internal defects of the product and improve the overall quality of the thermal storage body.

[0018] 3. Adding an appropriate amount of plasticizer and preservative during the mixing process not only improves the plasticity of the mud, making it easier to shape, but also improves the anti-aging performance of the product and extends its service life. At the same time, the introduction of these additives also helps to improve the stability of the thermal storage body in a high temperature environment.

[0019] 4. The extrusion molding technology can accurately control the shape and size of the honeycomb ceramic heat storage body, ensuring that it has a high degree of structural consistency and uniform pore distribution. This molding method not only improves the product qualification rate, but also helps to improve the heat exchange efficiency.

[0020] 5. Through the high-temperature firing process, sufficient chemical reaction and physical bonding occur between the materials, further enhancing the structural strength and high-temperature resistance of the thermal storage body. High-temperature firing also helps to eliminate internal stress and reduce the risk of cracking or deformation of the product during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A flow chart of a production method of a RTO combined honeycomb ceramic thermal storage body for this application; Figure 2 This is a schematic diagram of the three-dimensional structure of the mixing equipment in the embodiment of the present application; Figure 3 This is a schematic diagram of a three-dimensional structure of a fully cutaway mixing device in an embodiment of the present application; Figure 4 This is a sectional view of the three-dimensional structure of the double-helix stirring mechanism in the embodiment of the present application; Figure 5 This is a schematic diagram of the transmission structure of each component in the double-helix stirring mechanism in the embodiment of the present application; Figure 6 It is a cross-sectional view of the locking mechanism in the embodiment of the present application.

[0022] In the figure: 1. mixing barrel; 2. side plate; 3. rotating bearing; 4. rotating mechanism; 5. locking mechanism; 6. liquid inlet; 7. vacuum tube; 8. sealing plate; 9. double-helix stirring mechanism; 41. mounting plate; 42. rotating gear; 51. fixing block; 52. positioning rod; 61. electric control valve; 71. sealing valve body; 91. power assembly; 92. peripheral conveying assembly; 93. central conveying assembly; 94. transmission assembly; 911. fixed base; 912. driving motor; 913. power gear; 921. double-sided gear ring; 922. connecting rod; 923. conveying plate; 931. gear plate; 932. rotating shaft; 933. spiral plate; 941. gear shaft; 942. transmission gear. DETAILED DESCRIPTION

[0023] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations. Example

[0024] A production process of RTO combined honeycomb ceramic thermal storage body, comprising the following steps Material preparation: prepare materials according to the following proportions: 35% alumina powder, 12% diatomaceous earth, 8% expanded perlite, 4% rare earth oxide, 4% nanocarbon fiber, 8% kaolin, 8% quartz sand, 4% titanium dioxide, 3% boron nitride powder, 3% silicon carbide powder, 2% zirconium oxide powder, 1% alumina fiber, 2% glass powder, 2% yttrium stabilized zirconia, 2% alumina hollow spheres and 1% aluminum borate whiskers.

[0025] The mixed material is placed in a drying device and dried at 80°C for 4 hours. The dried material is finely ground using a ball mill and sieved through a 180-mesh sieve to ensure the fineness of the powder. The sieved mixture is placed in a mixing device, and 2% of dibutyl phthalate as a plasticizer based on the total weight of the mixture is added, and 1% of a preservative based on the total weight of the mixture is added. The mixture is mixed for 30 minutes to ensure that the materials are fully mixed to obtain a mixed clay material. The mixed clay material is allowed to stand at a constant temperature of 25°C and a relative humidity of 60% for 24 hours to ensure that the clay material is uniform and stable. The clay material after standing is extruded by an extrusion molding machine to form a honeycomb structure green body with a honeycomb pore size of 3.5 mm and a wall thickness of 1.5 mm. The extruded green body is naturally dried and trimmed after drying to remove excess or irregular parts. The trimmed green body is placed in a kiln and heated to 1300°C at a heating rate of 5°C / min. It is sintered at 1300°C for 4 hours to obtain a finished honeycomb ceramic thermal storage body. Example

[0026] The steps of Example 2 are roughly the same as those of Example 1, but the material mixing ratio is different. The specific material ratios are adjusted as follows: 38% alumina powder, 10% diatomaceous earth, 10% expanded perlite, 3% rare earth oxide, 5% nano-carbon fiber, 10% kaolin, 5% quartz sand, 5% titanium dioxide, 1% boron nitride powder, 5% silicon carbide powder, 4% zirconium oxide powder, 0.5% alumina fiber, 3% glass powder, 4% yttrium-stabilized zirconium oxide, 1% alumina hollow spheres, and 2% aluminum borate whiskers; the subsequent steps (drying, grinding, mixing, standing, molding, drying, trimming and firing) are exactly the same as those of Example 1. Example

[0027] The steps of Example 3 are also based on Example 1, but the material mixing ratio and honeycomb structure parameters are adjusted. The specific material ratios are as follows: 40% alumina powder, 11% diatomaceous earth, 6% expanded perlite, 5% rare earth oxide, 3% nano carbon fiber, 9% kaolin, 7% quartz sand, 4% titanium dioxide, 4% boron nitride powder, 2% silicon carbide powder, 3% zirconium oxide powder, 2% alumina fiber, 1% glass powder, 3% yttrium stabilized zirconia, 3% alumina hollow spheres and 0.5% aluminum borate whiskers.

[0028] In the forming step, the honeycomb aperture size was adjusted to 4 mm and the wall thickness was adjusted to 1 mm. The remaining steps (drying, grinding, mixing, standing, forming, drying, trimming and firing) were consistent with Example 1.

[0029] like Figures 2 to 6As shown, the mixing equipment includes a mixing barrel body 1 and a side plate 2, the side plate 2 is used to support the mixing barrel body 1, the end of the mixing barrel body 1 and the side plate 2 are rotatably connected through a rotating bearing 3, and a rotating mechanism 4 and a locking mechanism 5 are arranged on the outer side of the connection between the mixing barrel body 1 and the rotating bearing 3, the rotating mechanism 4 is used to control the rotation of the mixing barrel body 1, and the locking mechanism 5 is used to fix the mixing barrel body 1 after rotation, a liquid inlet 6 and a vacuum tube 7 are arranged on the annular surface of the mixing barrel body 1, and a material port is also opened on the annular surface of the mixing barrel body 1, and a sealing plate 8 is detachably installed at the material port by bolts, and a double-helix stirring mechanism 9 is arranged inside the mixing barrel body 1, and the double-helix stirring mechanism 9 includes a power component 91 and a peripheral conveying component 92. , a central conveying assembly 93 and a transmission assembly 94, the peripheral conveying assembly 92 is installed on the annular inner wall inside the mixing barrel body 1, the central conveying assembly 93 is arranged at the central position inside the mixing barrel body 1, two groups of transmission assemblies 94 are arranged, and the two groups of transmission assemblies 94 are respectively located inside the inner walls on both sides of the mixing barrel body 1, and are used for transmission connection between the peripheral conveying assembly 92 and the central conveying assembly 93, two groups of power assemblies 91 are arranged, and the two groups of power assemblies 91 are respectively located on both sides of the annular end surface of the mixing barrel body 1, the power assembly 91 is transmission connected with the peripheral conveying assembly 92, and is used for providing power to the peripheral conveying assembly 92 and the central conveying assembly 93, and the peripheral conveying assembly 92 and the central conveying assembly 93 rotate in opposite directions.During operation, the mixing barrel 1 is rotated by the rotating mechanism 4 until the material port faces upward, the sieved mixed material is placed in the mixing equipment, the mixing barrel 1 is fixed by the locking mechanism 5, and after opening the sealing plate 8, the sieved mixed material can be easily placed in the mixing barrel 1 for mixing. Before mixing, the locking mechanism 5 is opened, and the mixing barrel 1 is rotated until the liquid inlet 6 and the vacuum tube 7 face upward, so as to facilitate the addition of binders, lubricants and water during the mixing process to ensure the water content requirement during the mixing process, and the vacuum tube 7 can be drawn out of the mixing barrel. 1 and the gas generated during the kneading process, ensuring the vacuum environment inside the kneading barrel 1, which is conducive to removing the residual air in the mud during the kneading process, increasing the density and plasticity of the mud, so that the subsequent molding process is smoother and the mechanical strength of the ceramic heat storage body is improved. In addition, during the kneading process, the double-screw stirring mechanism 9 mixes and moves the screened mixture through the peripheral conveying component 92 and the central conveying component 93 to increase the kneading speed and ensure the uniformity of the mud. The transmission component 94 is used to The peripheral conveying assembly 92 and the central conveying assembly 93 are connected so that they can work together correctly. The power assembly 91 provides power for the peripheral conveying assembly 92 and the central conveying assembly 93, and drives the entire mixing process through the transmission connection with the peripheral conveying assembly 92. The mixed mud is allowed to stand in a stable pressure environment in the mixing equipment, wherein water is supplemented through the liquid inlet 6, so that the mud is allowed to mature under appropriate temperature and humidity conditions, so that the moisture in the mud is evenly distributed. At the same time, the organic matter is decayed and organic acid is produced through the action of bacteria, further improving the plasticity of the mud. The harmful gas generated during the aging process can be collected through the vacuum tube 7, and in order to make the moisture distribution in the mud more even during the aging process, the shaking of the mixing box 1 can be manually controlled by the rotating mechanism 4. After the standing is completed, the mixing barrel 1 is rotated until the material mouth faces downward, and the sealing plate 8 is opened to take out the mixed mud. In addition, the mixing barrel 1 can be driven to swing by the rotating mechanism 4 during the unloading process to facilitate the falling of the mud and avoid clogging of the material mouth.

[0030] like Figures 2 to 6As shown, the central conveying assembly 93 includes a gear plate 931, a rotating shaft 932 and a spiral plate 933. The rotating space is provided inside the two side walls of the internal space of the mixing barrel 1. The gear plate 931 is rotatably installed in the rotating space. The rotating shaft 932 horizontally penetrates the two side inner walls of the internal space of the mixing barrel 1 and is fixedly connected to the center of the gear plates 931 on both sides. The spiral plate 933 is fixedly installed on the shaft body of the rotating shaft 932 in a spiral shape. The annular end face of the gear plate 931 is gear-shaped and meshes with the transmission assembly 94. During operation, the spiral plate 933 is fixed on the rotating shaft 932 in a spiral shape and rotates along the axis direction of the rotating shaft to transport the mud from one side to the other side, and at the same time mixes and stirs the mud, which can not only mix the mud, but also allow the mud to be deeply ventilated in the central area, release the gas wrapped in the mud, and promote the mixing process.

[0031] As an embodiment of the present invention, the peripheral conveying component 92 includes two symmetrically arranged bilateral gear rings 921 and a plurality of connecting rods 922. An annular space is arranged at the annular inner wall of the rotating space. The bilateral gear ring 921 is rotatably installed in the corresponding annular space. An annular groove is opened at the inner wall of the annular space. The annular groove connects the annular space and the internal space of the mixing barrel body 1. A plurality of connecting rods 922 are equidistantly arranged on the inner wall of the internal space of the mixing barrel body 1. Both ends of the plurality of connecting rods 922 pass through the annular grooves on both sides and are meshed and connected with the corresponding bilateral gear rings 921 for transmission. The outer ring end face of the bilateral gear ring 921 is an outer gear ring shape, which is used to mesh with the power component 91 and transmit power. The inner ring end face of the bilateral gear ring 921 is an inner gear ring shape, which is used to mesh with the transmission component 94 and transmit power. A plurality of inclined conveying plates 923 are arranged on the connecting rod 922. During operation, when the power assembly 91 provides power, the double-sided gear ring 921 engages the transmission power assembly 91 through the outer gear ring end face to realize rotation. At the same time, the two ends of the connecting rod 922 engage the transmission assembly 94 through the inner gear ring end face, so that the connecting rod 922 and the double-sided gear ring 921 rotate together, driving the conveying plate 923 on the connecting rod to rotate in the internal space of the mixing barrel 1, thereby realizing the conveying and mixing of the mud material. The mud material in the mixing process can be quickly and evenly conveyed to the periphery of the mixing barrel 1. While ensuring uniform mixing, the distribution of moisture in the mud material can be improved, the uniformity of humidity can be ensured, and mixing can be promoted.

[0032] As an embodiment of the present invention, the transmission assembly 94 includes a gear shaft 941 and a transmission gear 942. A transmission space is opened between the rotating space and the annular space. The transmission space connects the rotating space and the annular space. The gear shaft 941 is rotatably installed in the transmission space. The transmission gear 942 is fixedly mounted on the shaft body of the gear shaft 941, and the transmission gear 942 is meshed and transmittedly connected with the inner gear ring of the bilateral gear ring 921 and the annular end face of the gear plate 931. During operation, the transmission gear 942 is meshed and connected with the inner gear ring of the bilateral gear ring 921 and the annular end surface of the gear plate 931. When the bilateral gear ring 921 of the peripheral conveying assembly 92 rotates, the power is transmitted by meshing with the inner teeth of the transmission gear 942, driving the transmission gear 942 to rotate together. The transmission gear 942 then transmits power by meshing with the gear shaft 941, so that the gear shaft 941 and the transmission gear 942 fixed on its shaft body rotate together, and the rotation directions of the bilateral gear ring 921 and the gear plate 931 are opposite, so that the conveying directions of the peripheral conveying assembly 92 and the central conveying assembly 93 are opposite, and the mud material forms an internal motion cycle while being stirred in the mixing barrel body 1. The coordinated work of the peripheral conveying assembly and the transmission assembly realizes the uniform conveying and mixing of the mud material inside the mixing barrel body 1.

[0033] As an embodiment of the present invention, the power assembly 91 includes a fixed base 911, a driving motor 912 and a power gear 913. The fixed base 911 is fixedly connected to the mixing barrel body 1 and is used to fix the driving motor 912 on the mixing barrel body 1. A connecting groove is provided at the inner wall of the outer ring of the annular space, and the connecting groove connects the outer ring space and the external space. The power gear 913 is located at the connecting groove. The end face center of the power gear 913 is fixedly connected to the output shaft of the driving motor 912. The part of the power gear 913 located in the connecting groove is meshed and connected to the outer gear ring of the bilateral gear ring 921. During operation, when the driving motor 912 is started, the power is transmitted to the power gear 913, and at the same time, the part of the power gear 913 located in the connecting groove is meshed and connected to the outer gear ring of the bilateral gear ring 921. After transmission, the power is transmitted to the peripheral conveying assembly 92, thereby driving the rotation of the conveying plate 923 to achieve uniform conveying and mixing of the mud in the mixing barrel body 1.

[0034] As an embodiment of the present invention, the rotating mechanism 4 includes a mounting plate 41 and a rotating gear 42. The mounting plate 41 is fixedly mounted on the side plate 2 in a horizontal shape, and the rotating gear 42 is rotatably mounted on the mounting plate 41. An outer toothed ring is provided on the annular surface at the end of the mixing barrel 1, and the rotating gear 42 is meshed and transmission-connected with the outer toothed ring of the mixing barrel 1. During operation, the mixing barrel 1 is driven to rotate as a whole by the rotating gear 42, thereby adjusting the position of the material port, facilitating loading and unloading, and using the same material port for loading and unloading, reducing the airtight components required for the equipment, reducing the risk of air leakage at the seal, preventing the leakage of harmful gases generated during mixing and aging, and ensuring the safety of the device.

[0035] like Figures 2 to 6 As shown, the locking mechanism 5 includes a fixed block 51 and a positioning rod 52. The fixed block 51 is fixedly mounted on the side plate 2. A through hole is provided inside the fixed block 51. The positioning rod 52 is inserted into the through hole of the fixed block 51. A plurality of positioning holes are provided on the circumference of the annular end surface of the mixing barrel 1 for inserting the positioning rod 52 to limit the free rotation of the mixing barrel 1. The locking mechanism 5 is used to limit the free rotation of the mixing barrel 1, improve the safety and stability of the operation, and ensure that the mixing barrel 1 is always in a stable position when the mud is put in and taken out, thereby ensuring the accuracy and reliability of the operation.

[0036] As an embodiment of the present invention, a plurality of liquid inlets 6 are provided, and an electric control valve 61 is provided in each of the plurality of liquid inlets 6. The provision of the electric control valve 61 enables the amount of water, lubricant and binder to be accurately controlled, and ensures the accuracy of the time and amount. The provision of the plurality of liquid inlets 6 enables selection when different amounts of liquid need to be added, thereby improving the flexibility and efficiency of the operation. During the entire mixing and aging process, the liquid inlet 6 can be opened or closed at any time according to actual needs to ensure that the humidity of the base material is appropriate, thereby improving efficiency and quality.

[0037] As an embodiment of the present invention, a sealing valve body 71 is provided in the vacuum tube 7 to ensure that the air pressure inside the mixing box 1 is always within a controllable range, so as to facilitate the adjustment of the internal environment of mixing and aging.

[0038] As an embodiment of the present invention, the liquid inlet 6, the vacuum tube 7 and the power assembly 91 are located on the same straight line, and the material inlet and the sealing plate 8 are arranged at a 90-degree angle to the straight line where the liquid inlet 6 and the vacuum tube 7 are located on the annular surface of the mixing barrel 1. When feeding and discharging materials, the interference of the rotating mixing barrel 1 on the connection between the water pipe 6 and the vacuum tube 7 is reduced.

[0039] The working principle of the present invention is as follows: the mixing barrel 1 is rotated by the rotating mechanism 4 until the material port faces upward, the sieved mixed material is placed in the mixing equipment, the mixing barrel 1 is fixed by the locking mechanism 5, and after the sealing plate 8 is opened, the sieved mixed material can be easily placed in the mixing barrel 1 for mixing. Before mixing, the locking mechanism 5 is opened, and the mixing barrel 1 is rotated until the liquid inlet 6 and the vacuum tube 7 face upward, so that the binder, lubricant and water can be added during the mixing process to ensure the water content requirement during the mixing process, and the vacuum tube 7 can extract the mixed material. The air in the mixing barrel 1 and the gas generated during the mixing process ensure the vacuum environment inside the mixing barrel 1, which is conducive to removing the residual air in the mud during the mixing process, increasing the density and plasticity of the mud, so that the subsequent molding process is smoother and the mechanical strength of the ceramic heat storage body is improved. In addition, during the mixing process, the double-screw stirring mechanism 9 mixes and moves the screened mixed material through the peripheral conveying component 92 and the central conveying component 93 to increase the mixing speed and ensure the uniformity of the mud. The transmission component 94 is used The peripheral conveying assembly 92 and the central conveying assembly 93 are connected so that they can work together correctly. The power assembly 91 provides power for the peripheral conveying assembly 92 and the central conveying assembly 93, and drives the entire mixing process through the transmission connection with the peripheral conveying assembly 92. The mixed mud is allowed to stand in a stable pressure environment in the mixing equipment, wherein water is supplemented through the liquid inlet 6 to allow the mud to be "matured" under appropriate temperature and humidity conditions, thereby promoting a uniform distribution of water in the mud. At the same time, the organic matter is decayed and organic acids are produced through the action of bacteria, further improving the plasticity of the mud. The harmful gases generated during the aging process can be collected through the vacuum tube 7, and in order to make the water distribution in the mud more uniform during the aging process, the shaking of the mixing box 1 can be manually controlled by the rotating mechanism 4. After the standing is completed, the mixing barrel 1 is rotated until the material port is facing downward, and the sealing plate 8 is opened to take out the mixed mud. In addition, the mixing barrel 1 can be driven to swing by the rotating mechanism 4 during the unloading process to facilitate the falling of the mud and avoid clogging of the material port.

[0040] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. Various changes and improvements may be made without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention to be protected, and the scope of protection required by the present invention is defined by the attached claims and their equivalents.

Claims

1. A production process of RTO combined honeycomb ceramic thermal storage body, characterized in that: The following steps are involved: Alumina powder, diatomaceous earth, expanded perlite, rare earth oxide, nano carbon fiber, kaolin, quartz sand, titanium dioxide, boron nitride powder, silicon carbide powder, zirconium oxide powder, alumina fiber, glass powder, yttrium stabilized zirconium oxide, alumina hollow spheres and aluminum borate whiskers are mixed; The mixed materials are dried, finely ground using a ball mill, and sieved through a sieve; The sieved mixture is put into a mixing device, and 2% of a plasticizer and 1% of a preservative are added for mixing to obtain a mixed mud material; The mixed clay material is allowed to stand to obtain a blank; The blank is extruded through an extrusion molding machine to form a green body with a honeycomb structure; The extruded green body is naturally dried, the dried green body is trimmed, and the trimmed green body is placed in a kiln for high-temperature firing to obtain a honeycomb ceramic heat storage body.

2. The production process of the RTO combined honeycomb ceramic thermal storage body according to claim 1, characterized in that: Alumina powder, diatomaceous earth, expanded perlite, rare earth oxide, nano carbon fiber, kaolin, quartz sand, titanium dioxide, boron nitride powder, silicon carbide powder, zirconium oxide powder, alumina fiber, glass powder, yttrium stabilized zirconium oxide, alumina hollow spheres and aluminum borate whiskers are mixed according to the following weight percentages: Alumina powder 30%-40%, diatomaceous earth 10%-15%, expanded perlite 5%-10%, rare earth oxides 3%-5%, nano carbon fibers 3%-5%, kaolin 5%-10%, quartz sand 5%-10%, titanium dioxide 3%-5%, boron nitride powder 1%-5%, silicon carbide powder 1%-5%, zirconium oxide powder 1%-4%, alumina fiber 0.5%-2%, glass powder 1%-3%, yttrium stabilized zirconia 1%-4%, alumina hollow spheres 1%-3%, aluminum borate whiskers 0.5%-2%.

3. The production process of the RTO combined honeycomb ceramic thermal storage body according to claim 2, characterized in that: The sieve is 180 mesh.

4. The production process of the RTO combined honeycomb ceramic thermal storage body according to claim 3, characterized in that: When the mixed material is dried, the mixing temperature is 80° C. and the drying time is 4 hours.

5. The production process of the RTO combined honeycomb ceramic thermal storage body according to claim 4, characterized in that: The mixing time was 30 minutes.

6. The production process of the RTO combined honeycomb ceramic thermal storage body according to claim 5, characterized in that: When the trimmed green body is placed in a kiln for high-temperature firing, the temperature is raised to 1300°C at a heating rate of 5°C / min and the temperature is maintained for 4 hours.

7. The production process of the RTO combined honeycomb ceramic thermal storage body according to claim 6, characterized in that: When the mixed mud is left to stand, the following steps are specifically included: The mixed clay was placed in an environment with a constant temperature of 25°C and a relative humidity of 60% for 24 hours.

8. The production process of the RTO composite honeycomb ceramic thermal storage body according to claim 7, characterized in that: The plasticizer is dibutyl phthalate.

9. The production process of the RTO combined honeycomb ceramic thermal storage body according to claim 8, characterized in that: In the green body of the honeycomb structure, the honeycomb aperture size is 3-4 mm and the wall thickness is 1-2 mm.

10. An RTO combined honeycomb ceramic thermal storage body, characterized in that: Prepared by the production process described in any one of claims 1 to 9.

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