Ceramic preparation system and ceramic preparation method

Abstract

The present invention relates to the technical field of ceramic preparation, and particularly to a ceramic preparation system and a ceramic preparation method. The ceramic preparation system includes a closable intake valve, an air distribution device, a heat source supply furnace, a sintering furnace, and a ceramic processing device. The air distribution device is connected to the intake valve through an intake pipeline. The heat source supply furnace includes a plasma generating device, and the intake port of the heat source supply furnace is connected to the air distribution device. The plasma generating device is used to ionize the gas transported by the air distribution device to form a heat source gas. The sintering furnace is connected to the outlet of the heat source supply furnace and sinters the ceramic through the heat source gas. The ceramic processing device is connected to the flue gas pipeline through a waste heat pipeline and a recovery pipeline. In the ceramic preparation system of the present invention, a closed gas circulation pipeline is formed among the air distribution device, the heat source supply furnace, and the sintering furnace, and a gas reuse route is formed among the waste heat pipeline, the ceramic processing device, and the recovery pipeline. Through the closed gas circulation route and reuse, the exhaust gas emissions are significantly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of ceramic preparation, and particularly relates to a ceramic preparation system and a ceramic preparation method. Background Art

[0002] In traditional ceramic production, the extensive use of fossil fuels (such as natural gas) is the main choice for thermal energy. However, this dependence has brought significant environmental challenges. In particular, the exhaust gas emissions generated during the combustion process of fossil fuels, including sulfur dioxide, carbon dioxide, and nitrogen oxides, are the main factors leading to air pollution and the exacerbation of the greenhouse effect. The emissions of these exhaust gases not only cause direct pollution to the environment but also pose a potential threat to human health. At the same time, in the traditional ceramic production process, especially in the ceramic decoration and glaze treatment processes, some materials used may generate exhaust gases harmful to the environment, which mainly include volatile organic compounds, heavy metal vapors, and other potential toxic gases. Due to their high volatility, these exhaust gases are easily released into the air during the production process, affecting the environment and human health. For example, some organic compounds have strong irritation and toxicity, such as formaldehyde and benzene, and long-term or high-concentration exposure may cause serious health problems. Therefore, controlling and reducing the emissions of exhaust gases is very important for environmental protection and public health. Summary of the Invention

[0003] The purpose of the present invention is to at least solve the problem that the exhaust gas generated during the ceramic preparation process will pollute the environment and endanger human health. This purpose is achieved through the following technical solutions:

[0004] The first aspect of the present invention proposes a ceramic preparation system, including:

[0005] A closable intake valve;

[0006] An air distribution device, the air distribution device is communicated with the intake valve through an intake pipeline;

[0007] A heat source supply furnace, the heat source supply furnace includes a plasma generating device, and the intake port of the heat source supply furnace is communicated with the air distribution device, and the plasma generating device is used to ionize the gas transported by the air distribution device to form a heat source gas;

[0008] A sintering furnace, the sintering furnace is communicated with the outlet of the heat source supply furnace and sinters ceramics through the heat source gas, and the sintering furnace is communicated with the air distribution device through a flue gas pipeline, and a closed gas circulation route can be formed among the air distribution device, the heat source supply furnace, and the sintering furnace;

[0009] Ceramic processing device, the ceramic processing device is connected to the flue gas pipe through a waste heat pipe and a recovery pipe, and a gas reuse route is formed among the waste heat pipe, the ceramic processing device and the recovery pipe.

[0010] In the ceramic preparation system according to the present invention, a closed gas circulation pipeline can be formed among the air distribution device, the heat source supply furnace and the sintering furnace. A gas reuse route is formed among the waste heat pipe, the ceramic processing device and the recovery pipe. Through the closed gas circulation route and the reuse of flue gas, the waste gas emissions are significantly reduced. This not only reduces environmental pollution, but also conforms to the current global trend of sustainable development and environmental protection. At the same time, it avoids the problem that production workers inhale toxic gases and endanger their physical health.

[0011] In addition, the ceramic preparation system according to the present invention may also have the following additional technical features:

[0012] In some embodiments of the present invention, the ceramic preparation system further includes a heat exchange device, and the heat exchange device is connected to the flue gas pipe and exchanges heat with the gas in the flue gas pipe.

[0013] In some embodiments of the present invention, the ceramic processing device includes a drying furnace, the waste heat pipe includes a first waste heat pipe, the first waste heat pipe is connected to the flue gas pipe that has passed through the heat exchange device, the recovery pipe includes a first recovery pipe, the drying furnace includes at least three drying chambers, and heating channels are provided in the inner walls of each drying chamber. One end of the heating channel is connected to the first waste heat pipe, the other end of the heating channel is connected to the first recovery pipe, and a temperature control unit is provided at the connection of each heating channel and the first waste heat pipe to make the temperatures of the drying chambers corresponding to each heating channel different.

[0014] In some embodiments of the present invention, the ceramic processing device includes a glazing furnace, the waste heat pipe includes a second waste heat pipe, the second waste heat pipe is connected to the flue gas pipe that has not passed through the heat exchange device, the recovery pipe includes a second recovery pipe, and the glazing furnace is respectively connected to the second waste heat pipe and the second recovery pipe to glaze the ceramic with the heat source gas that has not been heat-exchanged.

[0015] In some embodiments of the present invention, the ceramic preparation system further includes a waste heat power generation device and a diversion pipe. The first end of the diversion pipe is connected to one end of the flue gas pipe close to the sintering furnace, the second end of the diversion pipe is connected to one end of the flue gas pipe close to the air distribution device, and the waste heat power generation device is provided on the diversion pipe.

[0016] In some embodiments of the present invention, the ceramic preparation system further includes a gas recovery device, which is connected to the shunt pipeline and recovers the recoverable gas in the shunt pipeline.

[0017] In some embodiments of the present invention, the ceramic preparation system further includes a reversing valve, which is arranged at the first end and allows gas to pass through the shunt pipeline.

[0018] In some embodiments of the present invention, the heat source supply furnace further includes a furnace body, which has the air inlet and the air outlet, and a conveying channel for connecting the air inlet and the air outlet;

[0019] The plasma generating device includes an electrode assembly, which includes a first electrode rod and a second electrode rod arranged at intervals on the furnace body. The first electrode rod and the second electrode rod are located on a first straight line, and the first straight line is perpendicular to the extending direction of the conveying channel; the first electrode rod has a first working end, the second electrode rod has a second working end, the first working end and the second working end are arranged inside the conveying channel, and a discharge distance can be maintained between the first working end and the second working end.

[0020] In some embodiments of the present invention, the heat source supply furnace further includes a constraint mechanism, which includes:

[0021] A blowing component, the number of the blowing components is two, and they are respectively arranged at both ends of the conveying channel. Both of the blowing components have a blowing part arranged around the conveying channel as the center, and the blowing parts of the two blowing components are arranged oppositely;

[0022] An air supply component, which is arranged outside the furnace body and is used for supplying air to the blowing component.

[0023] A second aspect of the present invention provides a ceramic preparation method, which is applied to the above-mentioned ceramic preparation system, and includes the following steps:

[0024] Dry the ceramic in the heat source gas after heat exchange;

[0025] Sinter the dried ceramic in the circulating heat source gas;

[0026] Glaze the sintered ceramic in the heat source gas that has been sintered but not heat exchanged. Description of the Drawings

[0027] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for the purpose of showing the preferred embodiments and are not considered to be a limitation of the present invention. Also, throughout the drawings, the same reference numerals are used to represent the same components. In the drawings:

[0028] Figure 1 Schematically shows a schematic diagram of a ceramic preparation system according to an embodiment of the present invention;

[0029] Figure 2 Schematically shows a structural schematic diagram of a heat source supply furnace according to an embodiment of the present invention;

[0030] Figure 3 Is a flowchart of a ceramic preparation method according to an embodiment of the present invention.

[0031] The reference numerals are as follows:

[0032] 100, ceramic preparation system;

[0033] 10, heat source supply furnace; 11, electrode assembly; 111, first electrode rod; 112, second electrode rod; 12, furnace body; 121, air inlet; 122, air outlet; 13, constraint mechanism; 131, air supply component; 132, air supply component; 1321, air supply member.

[0034] 20, air distribution device; 21, first fan; 22, second fan; 30, intake valve; 40, sintering furnace; 50, drying furnace; 51, temperature control unit; 60, glazing furnace; 70, heat exchanger; 80, waste heat power generation device; 81, shunt pipeline; 811, first end; 812, second end; 82, gas recovery device; 90, intake pipeline; 91, flue gas pipeline; 911, reversing valve; 92, first waste heat pipeline; 921, stop valve; 93, first recovery pipeline; 94, second waste heat pipeline; 95, second recovery pipeline. Detailed Embodiments

[0035] The following will describe the exemplary embodiments of the present disclosure in more detail with reference to the drawings. Although the exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be limited by the embodiments set forth herein. On the contrary, these embodiments are provided so that the present disclosure can be more thoroughly understood and the scope of the present disclosure can be fully conveyed to those skilled in the art.

[0036] It should be understood that the terms used herein are for the purpose of describing particular example embodiments only and are not intended to be limiting. Unless the context clearly dictates otherwise, the singular forms "a", "an", and "the" as used herein may also include the plural forms. The terms "comprising", "including", "containing", and "having" are inclusive and thus specify the presence of the stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or combinations thereof. The method steps, processes, and operations described herein are not to be construed as necessarily requiring their performance in the particular order described or illustrated, unless an execution order is explicitly stated. It should also be understood that additional or alternative steps may be used.

[0037] Although the terms first, second, third, etc. may be used herein to describe multiple elements, components, regions, layers, and / or sections, these elements, components, regions, layers, and / or sections should not be limited by these terms. These terms may be used only to distinguish one element, component, region, layer, or section from another. Unless the context clearly indicates otherwise, terms such as "first", "second", and other numerical terms when used herein do not imply an order or sequence. Thus, a first element, component, region, layer, or section discussed below may be referred to as a second element, component, region, layer, or section without departing from the teachings of the example embodiments.

[0038] For ease of description, spatial relative relationship terms may be used herein to describe the relationship of one element or feature shown in the figures to another element or feature, such as "inside", "outside", "inner side", "outer side", "below", "beneath", "above", "over", etc. Such spatial relative relationship terms are intended to include different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is flipped, an element described as "below" or "beneath" another element or feature will then be oriented "above" or "over" the other element or feature. Thus, the example term "below" can include both the upper and lower orientations.

[0039] As Figures 1 to 2As shown, according to an embodiment of the present invention, a ceramic preparation system 100 is provided, which includes a closable intake valve 30, an air distribution device 20, a heat source supply furnace 10, a sintering furnace 40, and a ceramic processing device. Among them, the air distribution device 20 is connected to the intake valve 30 through an intake pipeline 90. The heat source supply furnace 10 includes a plasma generating device, and the intake port 121 of the heat source supply furnace 10 is connected to the air distribution device 20. The plasma generating device is used to ionize the gas transported by the air distribution device 20 to form a heat source gas. The sintering furnace 40 is connected to the outlet 122 of the heat source supply furnace 10 and sinters ceramics through the heat source gas. The sintering furnace 40 is connected to the air distribution device 20 through a flue gas pipeline 91. A closed gas circulation route can be formed among the air distribution device 20, the heat source supply furnace 10, and the sintering furnace 40. The ceramic processing device is connected to the flue gas pipeline 91 through a waste heat pipeline and a recovery pipeline. A gas reuse route is formed among the waste heat pipeline, the ceramic processing device, and the recovery pipeline. The gas reuse route can dry-fire ceramics or glaze ceramics.

[0040] For the ceramic preparation system 100 according to this embodiment, a closed gas circulation pipeline can be formed among the air distribution device 20, the heat source supply furnace 10, and the sintering furnace 40. A gas reuse route is formed among the waste heat pipeline, the ceramic processing device, and the recovery pipeline. Through the closed gas circulation route and the reuse of flue gas, the exhaust gas emissions are significantly reduced. This not only reduces environmental pollution but also conforms to the current global trend of sustainable development and environmental protection. At the same time, it avoids the problem that production workers inhale toxic gases and endanger their physical health. The reason for forming a closed gas circulation route is that the heat source supply furnace 10 uses a plasma generating device as the heat source, so that the plasma generating device can continuously ionize the gas in the gas circulation route.

[0041] It can be understood that the temperature in the sintering furnace 40 is between 950°C and 1450°C. Different sintering temperatures are controlled according to different ceramic materials. For example, the sintering temperature of porcelain is usually between 1200°C and 1450°C. This temperature range helps porcelain achieve transparency and high strength. The sintering temperature of stoneware is generally between 1100°C and 1250°C. This temperature range is conducive to the densification of the ceramic body and improves the mechanical strength. The sintering temperature of pottery is usually lower, about between 950°C and 1100°C. This temperature is sufficient to harden the pottery but will not cause over-sintering.

[0042] In some embodiments, the ceramic preparation system 100 further includes a heat exchange device, and the heat exchange device is connected to the flue gas pipeline 91 and exchanges heat with the flue gas in the flue gas pipeline 91. By combining the high-temperature gas in the flue gas pipeline 91 with the heat exchange device, the heat energy in the gas can be recovered, and the energy utilization rate of the ceramic preparation system 100 can be improved.

[0043] Specifically, the heat exchange device can be a flue gas-water heat exchanger 70. The flue gas enters the heat exchanger 70 through the flue gas pipeline 91 and exchanges heat with the cold water flowing through the other side of the heat exchanger 70. The heat energy in the flue gas is absorbed by the water, causing the water temperature to rise. The heated water can be used for the hot water system of the factory or as industrial hot water, and can also be used to drive a steam turbine to generate electricity. This heat exchanger 70 can adopt a shell-and-tube design, in which the flue gas flows through the tubes and the water flows outside the tubes, and heat exchange is carried out through the tube wall.

[0044] In some embodiments, the ceramic processing device includes a drying furnace 50. The waste heat pipeline includes a first waste heat pipeline 92, and the first waste heat pipeline 92 is communicated with the flue gas pipeline 91 passing through the heat exchange device. The recovery pipeline includes a first recovery pipeline 93. The drying furnace 50 includes at least three drying chambers, and heating channels are provided in the inner walls of each drying chamber. One end of the heating channel is communicated with the first waste heat pipeline 92, and the other end of the heating channel is communicated with the first recovery pipeline 93. A temperature control unit 51 is provided at the connection of each heating channel and the first waste heat pipeline 92 to make the temperatures of the drying chambers corresponding to each heating channel different. The drying furnace 50 includes at least three drying chambers, and each chamber has an independent heating channel and a temperature control unit 51. This allows for precise control of the temperature in each drying chamber to meet the specific drying requirements of different ceramic products. By connecting to the flue gas pipeline 91 passing through the heat exchange device, the drying furnace 50 can effectively utilize the waste heat generated during the ceramic preparation process. This design reduces energy waste and may lower the overall operating cost. The design of utilizing waste heat helps to reduce the system's dependence on traditional energy sources, thereby reducing carbon emissions and environmental impacts. The independent heating channels and temperature control units 51 make the drying process more uniform and effective, improving the drying efficiency and shortening the production cycle.

[0045] It can be understood that the temperatures of different drying chambers are different. They are the initial drying chamber. In this stage, the temperature is usually relatively low, about 60°C - 200°C, aiming to slowly remove the moisture in the ceramic to avoid cracks or deformation caused by rapid evaporation; the middle drying chamber. In this stage, the temperature may be slightly higher, at 200°C - 400°C. In this stage, most of the moisture is removed and the ceramic products begin to become stronger; the final drying chamber. In this stage, the temperature can be further increased, at 400°C - 600°C. This helps to ensure that all the moisture is removed and prepares for the subsequent sintering process.

[0046] Specifically, a stop valve 921 is also provided on the first waste heat pipeline 92. When drying operations are not required, the stop valve 921 can be closed to prevent the heat source gas from entering the first waste heat pipeline 92.

[0047] Specifically, a first fan 21 is also provided on the first waste heat pipeline 92, which is used to entrain the heat source gas in the flue gas pipeline 91 into the first waste heat pipeline 92.

[0048] The ceramic processing device further includes a glazing furnace 60. The waste heat pipeline includes a second waste heat pipeline 94, and the second waste heat pipeline 94 is communicated with the flue gas pipeline 91 that has not passed through the heat exchange device. The recovery pipeline includes a second recovery pipeline 95, and the glazing furnace 60 is respectively communicated with the second waste heat pipeline 94 and the second recovery pipeline 95, so that the heat source gas that has not passed through heat exchange is used for glazing the ceramics. Directly using the heat source gas that has not been processed by the heat exchange device for glazing can utilize the hot gas at a higher temperature, improving energy efficiency and glazing efficiency. Since a high-temperature direct heat source is used, it is expected that the surface of the glazed ceramics will be more uniform and smooth, enhancing the aesthetics and quality of the products. In addition, the heat source gas can still be recycled after glazing, reducing energy waste and conforming to the principle of sustainable development.

[0049] Specifically, a second fan 22 is provided on the second waste heat pipeline 94, and the second fan 22 is used to entrain the heat source gas into the second waste heat pipeline 94.

[0050] It can be understood that organic solvents widely used in glazes and decorative pigments evaporate at high temperatures, releasing organic compounds. These organic compounds not only have a negative impact on air quality but may also pose a threat to human health. At the same time, heavy metals (such as lead and cadmium) that may be contained in certain glazes and colors may volatilize during firing, generating toxic gases. These gases have potential hazards to both the environment and human health. Therefore, these organic compounds are transported back to the flue gas pipeline 91 through the second recovery pipeline 95 to prevent their leakage. The organic compounds can return to the heat source supply furnace 10 through the circulating gas route and be ionized and heated by the plasma generating device to generate gases that can be recycled or made harmless.

[0051] Specifically, organic compounds such as formaldehyde will generate carbon monoxide, hydrogen, carbon dioxide, water vapor or other organic compounds after ionization heating, and then these gases are recycled and reused through the gas recovery device 82.

[0052] Specifically, as Figure 1 shown, along the flow direction of the heat source gas, the second recovery pipeline 95 is located downstream of the first recovery pipeline 93, preventing the organic compound gas in the glazing furnace 60 from flowing into the drying furnace 50.

[0053] In some embodiments, the ceramic preparation system 100 further includes a waste heat power generation device 80 and a shunt pipeline 81. The first end 811 of the shunt pipeline 81 is connected to one end of the flue gas pipeline 91 close to the sintering furnace 40, and the second end 812 of the shunt pipeline 81 is connected to one end of the flue gas pipeline 91 close to the air distribution device 20. The waste heat power generation device 80 is arranged on the shunt pipeline 81. The waste heat power generation device 80 uses the high-temperature gas in the flue gas pipeline 91 to generate electricity, reducing the dependence on external power supply and lowering the energy cost.

[0054] It can be understood that the waste heat power generation device 80 is electrically connected to the plasma generating device. The waste heat power generation device 80 outputs electricity to the plasma power generation device for the plasma power generation device to use, which can reduce the dependence on external power supply.

[0055] Specifically, the ceramic preparation system 100 further includes a gas recovery device 82. The gas recovery device 82 is connected to the shunt pipeline 81 and recovers the recoverable gas in the shunt pipeline 81. By recovering the reusable gas, the gas recovery device 82 enhances the recycling of resources and reduces waste. It was mentioned above that carbon dioxide gas is mainly generated during the ceramic preparation process. Therefore, the gas recovery device 82 in this embodiment can recover carbon dioxide. Then the gas recovery device 82 can be a carbon dioxide capture unit. The flue gas cooled by the waste heat power generation device 80 enters the carbon dioxide capture unit. Usually, the absorption method is used to capture carbon dioxide. Common absorbents include amine compounds such as monoethanolamine (MEA). The flue gas contacts the absorbent in the absorption tower, and carbon dioxide is absorbed by the absorbent. The absorbent that has absorbed carbon dioxide is sent to the desorption tower. In the desorption tower, the absorbent is heated to release carbon dioxide from the absorbent. The released carbon dioxide is stored or used for other industrial purposes, such as enhancing oil and gas recovery, carbonation in the beverage industry, or producing synthetic fuels, after compression and purification. The regenerated absorbent is recycled back to the absorption tower to continue capturing carbon dioxide.

[0056] Specifically, the ceramic preparation system 100 further includes a reversing valve 911. The reversing valve 911 is arranged at the first end 811 of the shunt pipeline 81. The reversing valve 911 can allow the heat source gas to pass through the shunt pipeline. The reversing valve 911 can control the flow direction of the heat source gas in the shunt pipeline 81, which is crucial for adjusting and optimizing the flow of the heat source gas. Setting the reversing valve 911 can manage waste heat utilization and heat source gas recovery more effectively and optimize the energy utilization of the entire ceramic preparation system 100.

[0057] In some embodiments, the ceramic preparation system 100 may further include raw material processing equipment and shaping equipment. The raw material processing equipment may include a ball mill and a mixer. The ball mill is used to grind and mix raw materials to achieve the required particle size and uniformity, and the mixer is used to uniformly mix different raw materials. The shaping equipment may include a press, an extruder, a slip casting machine, and a potter's wheel. The press is used for dry pressing forming process; the extruder is used for extrusion forming, especially for making long strip-shaped ceramics; the slip casting machine is used for slip casting forming, suitable for products with complex shapes; the potter's wheel is used for manual or semi-automatic forming, especially for circular objects.

[0058] As Figure 2 shown, in some embodiments, the heat source supply furnace 10 further includes a furnace body 12, which has an air inlet 121 and an air outlet 122, and a conveying channel for connecting the air inlet 121 and the air outlet 122. The plasma generating device includes an electrode assembly 11. The electrode assembly 11 includes a first electrode rod 111 and a second electrode rod 112 spaced apart on the furnace body 12. The first electrode rod 111 and the second electrode rod 112 are located on a first straight line, and the first straight line is perpendicular to the extending direction of the conveying channel. The first electrode rod 111 has a first working end, and the second electrode rod 112 has a second working end. The first working end and the second working end are arranged inside the conveying channel, and the first working end and the second working end can maintain a discharge distance. The plasma generating device is used to provide an efficient heat source for ceramic sintering, improving the energy utilization efficiency. At the same time, the plasma technology can provide precise temperature control, which helps to improve the quality of ceramic sintering.

[0059] Specifically, in addition to the first electrode rod 111 and the second electrode rod 112, the above-mentioned electrode assembly 11 further includes a delivery mechanism, which is used to drive the movement of the first electrode rod 111 and the second electrode rod 112 to achieve the mutual approach or mutual separation of the first electrode rod 111 and the second electrode rod 112. Further, the delivery mechanism includes a clamping part and a driving part. Among them, the clamping part is used to clamp the part of the first electrode rod 111 and / or the second electrode rod 112 outside the furnace body 12, and the driving part is used to drive the clamping part to move along the first straight line. In this embodiment, the delivery mechanism is arranged in two parts, and each part includes a clamping part and a driving part. For the convenience of description, the two parts are respectively called the first part and the second part. Among them, the first part is used to drive the first electrode rod 111 to move, and the second part is used to drive the second electrode rod 112 to move.

[0060] The first part of the delivery mechanism includes a first driving part and a first clamping part, and the second part of the delivery mechanism includes a second driving part and a second clamping part. Among them, the first driving part is arranged on the furnace body 12, and the first clamping part is arranged at the output end of the first driving part. The second driving part and the support column of the furnace body 12 are arranged on the same installation base surface, and the second clamping part is arranged at the output end of the second driving part. In this embodiment, both the first driving part and the second driving part are arranged as hydraulic cylinders, and the first driving part and the second driving part move synchronously to ensure the moving distances of the first electrode rod 111 and the second electrode rod 112, thereby improving the control accuracy of the temperature of the heat source supply furnace 10.

[0061] Specifically, the heat source supply furnace 10 further includes a constraint mechanism 13, and the constraint mechanism 13 includes a air supply component 132 and a wind supply component 131. The number of the air supply components 132 is two, and they are respectively arranged at both ends of the conveying channel. Both of the two air supply components 132 have air supply parts 1321 arranged around the conveying channel as the center, and the orientations of the air supply parts 1321 of the two air supply components 132 are arranged oppositely. The wind supply component 131 is arranged outside the furnace body 12 and is used for supplying air to the air supply component 132. The constraint mechanism 13 effectively constrains the heat source gas, so that the air flow and heat in the conveying channel do not escape, thereby improving the utilization efficiency of the heat source supply furnace 10.

[0062] It can be understood that since a closed gas circulation line is to be formed among the air distribution device 20, the heat source supply furnace 10 and the sintering furnace 40, seals are provided between the air distribution device 20 and the intake pipe 90, between the air distribution device 20 and the intake port 121 of the heat source supply furnace 10, between the heat source supply furnace 10 and the sintering furnace 40, between the sintering furnace 40 and the flue gas pipe 91, and between the flue gas pipe 91 and the air distribution device 20.

[0063] It can be understood that the flue gas pipe 91 can also be directly connected to the intake pipe 90, and the effect of this embodiment is the same as that of the embodiment in which the flue gas pipe 91 is directly connected to the air distribution device 20.

[0064] Specifically, the seal between the air distribution device 20 and the intake pipe 90 uses flange connection and is matched with a high-temperature resistant gasket or sealing ring. The seal between the air distribution device 20 and the intake port 121 of the heat source supply furnace 10 adopts a flange interface or a welding method, as well as a sealing material that is resistant to high temperature and chemical corrosion. The seal between the heat source supply furnace 10 and the sintering furnace 40 uses an expansion joint or a flexible connection to cope with thermal expansion and equipment movement. The seal between the sintering furnace 40 and the flue gas pipe 91 uses a high-temperature durable sealing material, such as an asbestos or ceramic fiber sealing tape. The seal between the flue gas pipe 91 and the air distribution device 20 is similar to the seal of the intake pipe 90, and a flange interface and a high-temperature sealing material can be adopted.

[0065] In some embodiments, the ceramic preparation system 100 further includes a control device, which is responsible for managing the entire ceramic preparation process, including steps such as drying, sintering, and glazing. The control device is connected to the temperature control unit 51, the delivery mechanism and the restraint mechanism 13 of the plasma generating device, the reversing valve 911, etc. The control device is connected to the delivery mechanism and the restraint mechanism 13 of the plasma generating device, and can control the temperature of the ionized gas of the plasma generating device, thereby controlling the sintering temperature. In addition, the control device can achieve precise management of each key step through sensors and adjustment technologies. During the drying process, the control device ensures suitable drying conditions for the ceramic by monitoring the temperature and humidity of the drying chamber in real time, and automatically adjusts the drying time to meet the needs of different materials. For the sintering process, by precisely controlling the sintering temperature and presetting different sintering temperature curves, the sintering requirements of various ceramics are met, including the control of heating rate, holding time, and cooling rate. In the glazing stage, the control device accurately adjusts the temperature and time to ensure that the glaze melts correctly and is evenly coated on the ceramic surface. In addition, the control system records operation data for subsequent quality analysis and production process optimization, and provides an intuitive and easy-to-use user interface to make the operation more convenient. In addition, the system also integrates multiple safety functions, such as overheat protection and emergency stop switch, to ensure the safety of operation.

[0066] The ceramic preparation system 100 of this embodiment uses a plasma generating device as a heat source, replacing traditional fossil fuels, reducing the demand for fossil fuels, and thus reducing carbon emissions at the source. At the same time, the closed gas circulation route further reduces energy consumption and carbon emissions, which is of great significance for achieving the carbon neutral goal in the industrial production process.

[0067] As Figure 3 shown, this embodiment also proposes a ceramic preparation method, including the following steps:

[0068] Dry the ceramic in the heat source gas after heat exchange;

[0069] Sinter the dried ceramic in the circulating heat source gas;

[0070] Glaze the sintered ceramic in the heat source gas that has been sintered but not heat exchanged.

[0071] As mentioned above, only the specific preferred embodiments of the present invention are described, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention should be covered by the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims

1. A ceramic preparation system, characterized in that, it includes: a closable intake valve; an air distribution device, and the air distribution device is communicated with the intake valve through an intake pipeline; a heat source supply furnace, the heat source supply furnace includes a plasma generating device, and an air inlet of the heat source supply furnace is communicated with the air distribution device, and the plasma generating device is used for ionizing the gas conveyed by the air distribution device to form a heat source gas; a sintering furnace, the sintering furnace is communicated with an air outlet of the heat source supply furnace and sinters ceramics through the heat source gas, and the sintering furnace is communicated with the air distribution device through a flue gas pipeline, and a closed gas circulation route can be formed among the air distribution device, the heat source supply furnace and the sintering furnace; a ceramic processing device, the ceramic processing device is communicated with the flue gas pipeline through a waste heat pipeline and a recovery pipeline, and a gas reuse route is formed among the waste heat pipeline, the ceramic processing device and the recovery pipeline; a heat exchange device, the heat exchange device is connected to the flue gas pipeline and exchanges heat with the gas in the flue gas pipeline; wherein, the ceramic processing device includes a drying furnace, the waste heat pipeline includes a first waste heat pipeline, the first waste heat pipeline is communicated with the flue gas pipeline passing through the heat exchange device, the recovery pipeline includes a first recovery pipeline, the drying furnace includes at least three drying chambers, and heating channels are arranged in the inner walls of each drying chamber, one end of each heating channel is communicated with the first waste heat pipeline, the other end of each heating channel is communicated with the first recovery pipeline, and a temperature control unit is arranged at the connection of each heating channel and the first waste heat pipeline to make the temperatures of the drying chambers corresponding to each heating channel different; the ceramic processing device further includes a glazing furnace, the waste heat pipeline includes a second waste heat pipeline, the second waste heat pipeline is communicated with the flue gas pipeline that has not passed through the heat exchange device, the recovery pipeline includes a second recovery pipeline, and the glazing furnace is respectively communicated with the second waste heat pipeline and the second recovery pipeline to glaze the ceramics with the unexchanged heat source gas; the heat source supply furnace further includes a furnace body and a constraint mechanism, the furnace body has the air inlet and the air outlet, and a conveying channel for communicating the air inlet and the air outlet; the plasma generating device includes an electrode assembly, the electrode assembly includes a first electrode rod and a second electrode rod that are spaced apart on the furnace body, the first electrode rod and the second electrode rod are located on a first straight line, and the first straight line is perpendicular to the extending direction of the conveying channel; the first electrode rod has a first working end, the second electrode rod has a second working end, the first working end and the second working end are arranged inside the conveying channel, and a discharge distance can be maintained between the first working end and the second working end; the constraint mechanism includes: air supply assemblies, the number of the air supply assemblies is two, and they are respectively arranged at both ends of the conveying channel, both of the air supply assemblies have air supply members arranged in a surrounding manner with the conveying channel as the center, and the air supply members of the two air supply assemblies are arranged oppositely; An air supply assembly, which is arranged outside the furnace body and is used to supply air to the air blowing assembly.

2. The ceramic preparation system according to claim 1, characterized in that the ceramic preparation system further includes a waste heat power generation device and a shunt pipeline. The first end of the shunt pipeline is connected to the end of the flue gas pipeline close to the sintering furnace, and the second end of the shunt pipeline is connected to the end of the flue gas pipeline close to the air distribution device. The waste heat power generation device is arranged on the shunt pipeline.

3. The ceramic preparation system according to claim 2, characterized in that the ceramic preparation system further includes a gas recovery device, which is connected to the shunt pipeline and recovers the recoverable gas in the shunt pipeline.

4. The ceramic preparation system according to claim 2, characterized in that the ceramic preparation system further includes a reversing valve, which is arranged at the first end and allows gas to pass through the shunt pipeline.

5. A ceramic preparation method, characterized in that applied to the ceramic preparation system according to any one of claims 1 to 4, and includes the following steps: Drying the ceramic in the heat source gas after heat exchange; Sintering the dried ceramic in the circulating heat source gas; Glazing the sintered ceramic in the heat source gas that has been sintered but not heat exchanged.

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