System for reducing carbon emission of celadon production kiln by utilizing flue gas waste heat recovery technology
By designing a system that utilizes flue gas waste heat recovery technology, the problem of unused flue gas heat in celadon production kilns is solved, efficient energy utilization and low carbon emissions are achieved, and production efficiency and product quality are improved.
Patent Information
- Application Number
- CN202421168964.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-23
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-05-23
AI Technical Summary
During the firing process, the flue gas takes away a lot of heat and fails to be effectively utilized, resulting in high carbon emissions and low energy utilization efficiency.
Design a system that utilizes waste heat recovery technology of flue gas, including a kiln system, a heat recovery device and a heat utilization device. The heat recovery device recycles heat from the flue gas through a heat exchanger and stores it in a waste heat storage tank. The heat utilization device uses the stored waste heat to generate hot air through the hot air generator for heating at the drying process and user-side heating.
Through the cascade utilization of waste heat, the energy utilization efficiency of the kiln system is improved, the carbon emissions of the celadon production process are reduced, the maintenance process is simplified, the maintenance cost is reduced, and the drying uniformity and product quality are improved.
Smart Images
Figure CN222460305U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of ceramic firing, and specifically relates to a system that utilizes flue gas waste heat recovery technology to reduce carbon emissions from a celadon production kiln. Background Art
[0002] As a part of traditional Chinese intangible cultural heritage crafts, the production process of celadon usually includes multiple links such as raw material preparation, molding, drying, and glaze firing. Among these links, the firing process is particularly critical because it directly affects the texture and color of celadon. In the prior art, during the firing process, the flue gas generated will take away a lot of heat and fail to be effectively utilized. Therefore, some kilns have tried to install simple waste heat recovery devices, but due to technical and design limitations, the recovery efficiency is limited, and the recovered heat cannot be fully utilized in combination with the process flow. At the same time, the traditional drying process mostly relies on natural drying, which is inefficient and greatly affected by climatic conditions, and has a high defective rate. Summary of the invention
[0003] The purpose of the utility model is to solve the above problems and provide a system for reducing carbon emissions from celadon production kilns by utilizing flue gas waste heat recovery technology.
[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical solutions: a system for reducing the carbon emission of celadon production kilns by using flue gas waste heat recovery technology, including a kiln system, the kiln system having a kiln body, a combustion chamber at one end of the kiln body, a flue gas duct connected to the combustion chamber and the kiln body at the upper end of the kiln body, a heat recovery device at one side of the kiln system, the heat recovery device having a heat exchanger arranged in the flue gas duct, the heat exchanger being connected to a waste heat storage tank located at one side of the kiln body, a heat utilization device connected to the heat recovery device at the side of the heat recovery device away from the kiln system, and the heat utilization device being connected to a drying device and / or a user end. The device utilizes waste heat in a step-by-step manner through the heat recovery device in combination with the heat demand of the production process, thereby improving the energy utilization efficiency of the kiln system for firing celadon products and reducing the carbon emission of the celadon product production process.
[0005] In the above-mentioned system for reducing carbon emissions from celadon production kilns using flue gas waste heat recovery technology, the kiln body is horizontally arranged in a cylindrical shape and the combustion chamber is located inside one end of the kiln body. The kiln body is provided with a plurality of shelves arranged in sequence from bottom to top. The diameter of the kiln body is 2.5m and the length is 5m. During the firing process, the temperature inside the kiln body is maintained at 1200℃.
[0006] In the above-mentioned system for reducing carbon emissions from celadon production kilns using flue gas waste heat recovery technology, the flue gas duct has a vertical section connected to the upper end of the kiln body, the upper end of the vertical section is connected to the horizontal section through a curved section, and the end of the horizontal section away from the curved section has a smoke outlet. Smoke is generated from the combustion chamber, passes through the kiln body, enters the flue gas duct, and is discharged from the smoke outlet.
[0007] In the above-mentioned system for reducing carbon emissions from celadon production kilns using flue gas waste heat recovery technology, the heat exchanger is arranged in the vertical section of the flue gas pipeline, and the heat exchanger is a spiral pipeline structure, and the lower end of the heat exchanger is connected to the lower end of the waste heat storage tank through the first pump body, and the upper end of the waste heat storage tank is connected to the upper end of the heat exchanger through the heat return pipe. The inlet flue gas temperature of the heat exchanger is about 400°C, and the outlet flue gas temperature of the heat exchanger is reduced to 150°C. The first water pump delivers the water working medium carrying heat to the waste heat storage tank, and the working medium temperature in the waste heat storage tank is maintained at 80°C.
[0008] In the above-mentioned system for reducing carbon emissions from celadon production kilns using flue gas waste heat recovery technology, the upper end of the waste heat storage tank is connected to the water supply and return pipe of the air conditioner terminal at the user end.
[0009] In the above-mentioned system for reducing carbon emissions from celadon production kilns using flue gas waste heat recovery technology, the heat utilization device includes a hot air generator connected to the waste heat storage tank, the hot air generator is connected to a temperature control module, and the hot air generator is connected to a drying device and / or a user end through a hot air delivery pipeline. The hot air generator uses the heat in the waste heat storage tank to generate hot air, the temperature control module is used to control the temperature of the air in the hot air generator to ensure the provision of hot air at a constant temperature, and the hot air delivery pipeline is used to connect the hot air generator and the drying device or the user end to deliver the hot air to the desired location, and the user end is an office or storage space.
[0010] In the above-mentioned system for reducing carbon emissions from celadon production kilns using flue gas waste heat recovery technology, the lower end of the waste heat storage tank is connected to the hot air generator through a second pump body, and the upper end of the waste heat storage tank is connected to the hot air generator through a heat utilization return pipe.
[0011] In the above-mentioned system for reducing carbon emissions from celadon production kilns using flue gas waste heat recovery technology, the drying device is a primary drying chamber, a secondary drying chamber, and a tertiary drying chamber arranged in sequence on the side of the hot air generator away from the waste heat storage tank. The primary drying chamber, the secondary drying chamber, and the tertiary drying chamber are arranged adjacent to each other and are internally connected. Compared with the traditional air-drying method, the use of the drying device shortens the drying time and improves production efficiency.
[0012] In the above-mentioned system for reducing carbon emissions from celadon production kilns using flue gas waste heat recovery technology, the hot air generator is a water-heated hot air generator, and a blower is provided inside the hot air generator, and the lower end of the hot air delivery pipe is arranged at the upper end of the hot air generator and connected to one end of the blower, and the upper end of the hot air delivery pipe is connected to the user end, or the upper end of the hot air delivery pipe is connected to the drying chamber air supply pipe that is sequentially arranged in the first drying chamber, the second drying chamber and the third drying chamber through a curved pipe, and one side of the hot air generator is provided with a drying chamber return air pipe that is connected to the first drying chamber and connected to the other end of the blower. According to the requirements of the drying process, the temperature control module adjusts the hot air to 70°C, and the hot air is sent to the drying device by the hot air generator and the drying chamber air supply pipe. At the same time, part of the heat is adjusted to 30°C through the temperature control module and the heating terminal for heating at the user end.
[0013] In the above-mentioned system for reducing carbon emissions from celadon production kilns using flue gas waste heat recovery technology, the temperature control module has a temperature sensor arranged on the inner side of one end of the hot air delivery duct close to the hot air generator. The temperature control module allows the hot air temperature to be accurately adjusted within the range of 30°C-100°C to meet different drying process requirements, thereby improving flexibility and adaptability.
[0014] Compared with the existing technology, the advantages of the utility model are:
[0015] 1. The device uses a heat recovery device, combined with the heat demand of the production process, to utilize waste heat in a cascade manner, thereby improving the energy utilization efficiency of the kiln system for firing celadon products and reducing the carbon emissions of the celadon product production process. At the same time, the design of the heat recovery device and the heat utilization device simplifies the maintenance process, reduces maintenance costs, and reduces maintenance time.
[0016] 2. The device can recover the heat in the flue gas through the heat recovery device. This heat is used in the drying process, saving energy consumption and greatly reducing the carbon emissions of the entire firing process compared to traditional kilns, which helps to achieve environmentally friendly production.
[0017] 3. The use of hot air generators and drying devices improves drying uniformity, reduces the defective rate, and improves product quality. At the same time, compared with traditional drying methods, it shortens the drying time and improves production efficiency.
[0018] 4. The kiln body is made of thermal insulation material, which reduces the heat loss of the kiln body, thereby improving the overall energy utilization efficiency, reducing fuel consumption, reducing production costs, and at the same time reducing the thermal stress of the kiln body and increasing the service life of the kiln body.
[0019] 5. The design of the device meets the needs of sustainable development. Compared with traditional kilns, the energy consumption and emissions of each production cycle are reduced, which helps promote the transformation of the firing industry to green manufacturing and promote sustainable development. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is the overall layout diagram of the utility model.
[0021] Figure 2 It is a working principle diagram of the utility model.
[0022] Figure 3 It is an internal sectional view of the kiln body in the utility model.
[0023] In the figure: kiln system 1, kiln body 11, combustion chamber 12, flue gas duct 13, shelf 14, vertical section 15, curved section 16, horizontal section 17, smoke outlet 18, heat recovery device 2, heat exchanger 21, waste heat storage tank 22, first pump body 23, heat extraction return pipe 24, second pump body 25, heat utilization return pipe 26, heat utilization device 3, hot air generator 31, hot air delivery pipe 32, blower 33, curved pipe 34, drying chamber air supply pipe 35, drying chamber return air pipe 36, drying device 4, first drying chamber 41, second drying chamber 42, third drying chamber 43, user end 5, air conditioning terminal supply and return pipe 51. DETAILED DESCRIPTION
[0024] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation methods.
[0025] like Figure 1-3 As shown, a system for reducing carbon emissions from celadon production kilns using flue gas waste heat recovery technology includes a kiln system 1, the kiln system 1 has a kiln body 11, a combustion chamber 12 is provided at one end of the kiln body 11, a flue gas duct 13 connected to the combustion chamber 12 and the kiln body 11 is provided at the upper end of the kiln body 11, a heat recovery device 2 is provided on one side of the kiln system 1, the heat recovery device 2 has a heat exchanger 21 arranged in the flue gas duct 13, the heat exchanger 21 is connected to a waste heat storage tank 22 located on one side of the kiln body 11, and a heat utilization device 3 connected to the heat recovery device 2 is provided on the side of the heat recovery device 2 away from the kiln system 1, and the heat utilization device 3 is connected to a drying device 4 and / or a user end 5. The device uses the heat recovery device 2 in combination with the heat demand of the production process to utilize waste heat in a cascade manner, thereby improving the energy utilization efficiency of the kiln system 1 for firing celadon products and reducing the carbon emissions of the celadon product production process.
[0026] Combination Figure 1 and Figure 3As shown, the kiln body 11 is horizontally arranged in a cylindrical shape and the combustion chamber 12 is located inside one end of the kiln body 11. A plurality of shelves 14 are arranged in sequence from bottom to top in the kiln body 11. The diameter of the kiln body 11 is 2.5m and the length is 5m. During the firing process, the temperature in the kiln body 11 is maintained at 1200°C.
[0027] The smoke duct 13 has a vertical section 15 connected to the upper end of the kiln body 11, the upper end of the vertical section 15 is connected to the horizontal section 17 through the curved section 16, and the horizontal section 17 has a smoke outlet 18 at one end away from the curved section 16. Smoke is generated from the combustion chamber 12, passes through the kiln body 11, enters the smoke duct 13, and is discharged from the smoke outlet 18.
[0028] Specifically, the heat exchanger 21 is arranged in the vertical section 15 of the flue gas duct 13, and the heat exchanger 21 is a spiral pipe structure, and the lower end of the heat exchanger 21 is connected to the lower end of the waste heat storage tank 22 through the first pump body 23, and the upper end of the waste heat storage tank 22 is connected to the upper end of the heat exchanger 21 through the heat return pipe 24. The inlet flue gas temperature of the heat exchanger 21 is about 400°C, and the outlet flue gas temperature of the heat exchanger 21 is reduced to 150°C. The first water pump 23 delivers the water working medium carrying heat to the waste heat storage tank 22, and the working medium temperature in the waste heat storage tank 22 is maintained at 80°C.
[0029] Combination Figure 1 and Figure 2 As shown, the upper end of the waste heat storage tank 22 is connected to the air conditioning terminal supply and return water pipe 51 of the user end 5.
[0030] The heat utilization device 3 includes a hot air generator 31 connected to the waste heat storage tank 22, the hot air generator 31 is connected to a temperature control module, and the hot air generator 31 is connected to the drying device 4 and / or the user end 5 through a hot air delivery pipe 32. The hot air generator 31 uses the heat in the waste heat storage tank 22 to generate hot air, the temperature control module is used to control the temperature of the air in the hot air generator to ensure the provision of hot air at a constant temperature, and the hot air delivery pipe 32 is used to connect the hot air generator 31 and the drying device 4 or the user end 5 to deliver the hot air to the desired location, and the user end 5 is an office or storage space.
[0031] Specifically, the lower end of the waste heat storage tank 22 is connected to the hot air generator 31 through the second pump body 25 , and the upper end of the waste heat storage tank 22 is connected to the hot air generator 31 through the heat utilization return pipe 26 .
[0032] Furthermore, the drying device 4 is a primary drying chamber 41, a secondary drying chamber 42 and a tertiary drying chamber 43 which are sequentially arranged on the side of the hot air generator 31 away from the waste heat storage tank 22. The primary drying chamber 41, the secondary drying chamber 42 and the tertiary drying chamber 43 are arranged adjacent to each other and are internally connected. Compared with the traditional air-drying method, the use of the drying device 4 shortens the drying time and improves the production efficiency.
[0033] Furthermore, the hot air generator 31 is a water-heating type hot air generator, and a blower 33 is provided inside the hot air generator 31, and the lower end of the hot air delivery pipe 32 is arranged at the upper end of the hot air generator 31 and connected to one end of the blower 33, and the upper end of the hot air delivery pipe 32 is connected to the user end 5, or the upper end of the hot air delivery pipe 32 is connected to the drying chamber air supply pipe 35 which is sequentially arranged in the first drying chamber 41, the second drying chamber 42 and the third drying chamber 43 through the curved pipe 34, and a drying chamber return air pipe 36 which is connected to the first drying chamber 41 and the other end of the blower 33 is provided on one side of the hot air generator 31. According to the requirements of the drying process, the temperature control module adjusts the hot air to 70°C, and the hot air is sent to the drying device 4 by the hot air generator 31 and the drying chamber air supply pipe 35. At the same time, part of the heat is adjusted to 30°C by the temperature control module and the heating terminal for heating the user end 5.
[0034] Meanwhile, the temperature control module has a temperature sensor disposed inside the hot air delivery duct 32 near the hot air generator 31. The temperature control module allows the hot air temperature to be precisely adjusted within the range of 30°C-100°C to meet different drying process requirements, thereby improving flexibility and adaptability.
[0035] The principle of this embodiment is:
[0036] The flue gas duct 13 of the kiln system 1 is connected to the heat exchanger 21 of the heat recovery device 2. The flue gas generated by the kiln body 11 is discharged toward the smoke outlet 18 through the flue gas duct 13. The heat carried by the flue gas is recovered through the heat exchanger 21, and the recovered heat is sent to the waste heat storage tank 22 for storage. The hot air generator 31 of the heat utilization device 3 obtains heat from the waste heat storage tank 22, and then adjusts it through the temperature control module, and then the hot air is sent to the drying device 4 or the user end 5 through the hot air delivery duct 32.
[0037] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.
[0038] Although this article uses more terms such as kiln system 1, kiln body 11, combustion chamber 12, flue gas duct 13, shelf 14, vertical section 15, curved section 16, horizontal section 17, smoke outlet 18, heat recovery device 2, heat exchanger 21, waste heat storage tank 22, first pump body 23, heat extraction return pipe 24, second pump body 25, heat utilization return pipe 26, heat utilization device 3, hot air generator 31, hot air delivery pipe 32, blower 33, curved pipe 34, drying chamber air supply pipe 35, drying chamber return pipe 36, drying device 4, primary drying chamber 41, secondary drying chamber 42, tertiary drying chamber 43, user end 5, air conditioning terminal water supply and return pipe 51, etc., it does not exclude the possibility of using other terms. The use of these terms is only for the purpose of more conveniently describing and explaining the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.
Claims
1. A system for reducing carbon emissions from a celadon production kiln using flue gas waste heat recovery technology, comprising a kiln system (1), wherein the kiln system (1) comprises a kiln body (11), one end of the kiln body (11) is provided with a combustion chamber (12), and the upper end of the kiln body (11) is provided with a flue gas duct (13) connected to the combustion chamber (12) and the kiln body (11), characterized in that: A heat recovery device (2) is provided on one side of the kiln system (1), and the heat recovery device (2) has a heat exchanger (21) arranged in a flue gas duct (13), and the heat exchanger (21) is connected to a waste heat storage tank (22) located on one side of the kiln body (11). A heat utilization device (3) connected to the heat recovery device (2) is provided on the side of the heat recovery device (2) away from the kiln system (1), and the heat utilization device (3) is connected to a drying device (4) and / or a user end (5).
2. The system for reducing carbon emissions from celadon production kilns using flue gas waste heat recovery technology according to claim 1 is characterized in that: The kiln body (11) is in the shape of a horizontally arranged cylinder and the combustion chamber (12) is located on the inner side of one end of the kiln body (11). A plurality of shelves (14) are arranged in sequence from bottom to top in the kiln body (11).
3. The system for reducing carbon emissions from celadon production kilns using flue gas waste heat recovery technology according to claim 1 is characterized in that: The flue gas duct (13) comprises a vertical section (15) connected to the upper end of the kiln body (11); the upper end of the vertical section (15) is connected to the horizontal section (17) via a curved section (16); and the end of the horizontal section (17) away from the curved section (16) comprises a smoke outlet (18).
4. The system for reducing carbon emissions from celadon production kilns using flue gas waste heat recovery technology according to claim 3 is characterized in that: The heat exchanger (21) is arranged in the vertical section (15) of the flue gas duct (13), and the heat exchanger (21) is a spiral duct structure, and the lower end of the heat exchanger (21) is connected to the lower end of the waste heat storage tank (22) through the first pump body (23), and the upper end of the waste heat storage tank (22) is connected to the upper end of the heat exchanger (21) through the heat extraction return pipe (24).
5. The system for reducing carbon emissions from celadon production kilns using flue gas waste heat recovery technology according to claim 1 is characterized in that: The upper end of the waste heat storage tank (22) is connected to the air conditioning terminal water supply and return pipe (51) at the user end (5).
6. The system for reducing carbon emissions from celadon production kilns using flue gas waste heat recovery technology according to claim 1 is characterized in that: The heat utilization device (3) comprises a hot air generator (31) connected to the waste heat storage tank (22), the hot air generator (31) is connected to a temperature control module, and the hot air generator (31) is connected to the drying device (4) and / or the user end (5) via a hot air delivery pipeline (32).
7. The system for reducing carbon emissions from celadon production kilns using flue gas waste heat recovery technology according to claim 6 is characterized in that: The lower end of the waste heat storage tank (22) is connected to the hot air generator (31) via a second pump body (25), and the upper end of the waste heat storage tank (22) is connected to the hot air generator (31) via a heat utilization return pipe (26).
8. The system for reducing carbon emissions from celadon production kilns using flue gas waste heat recovery technology according to claim 7 is characterized in that: The drying device (4) is a primary drying chamber (41), a secondary drying chamber (42) and a tertiary drying chamber (43) which are arranged in sequence on a side of the hot air generator (31) away from the waste heat storage tank (22); the primary drying chamber (41), the secondary drying chamber (42) and the tertiary drying chamber (43) are arranged adjacent to each other and are internally connected.
9. The system for reducing carbon emissions from celadon production kilns using flue gas waste heat recovery technology according to claim 8 is characterized in that: The hot air generator (31) is a water-heating type hot air generator, and a blower (33) is provided inside the hot air generator (31), and the lower end of the hot air delivery pipe (32) is arranged at the upper end of the hot air generator (31) and is connected to one end of the blower (33), and the upper end of the hot air delivery pipe (32) is connected to the user end (5), or the upper end of the hot air delivery pipe (32) is connected to the drying chamber air supply pipe (35) which is sequentially arranged in the first drying chamber (41), the second drying chamber (42) and the third drying chamber (43) through a curved pipe (34), and a drying chamber return air pipe (36) which is connected to the first drying chamber (41) and is connected to the other end of the blower (33) is provided on one side of the hot air generator (31).
10. The system for reducing carbon emissions from celadon production kilns using flue gas waste heat recovery technology according to claim 9 is characterized in that: The temperature control module comprises a temperature sensor arranged on the inner side of one end of the hot air delivery pipe (32) close to the hot air generator (31).