Arrangement method of energy-saving oven tube

Abstract

The invention relates to the technical field of energy-saving boilers, and discloses an arrangement method of energy-saving baking oven tubes, which comprises the following steps of: S1, manufacturing the baking oven tubes by using a composite material with high heat conductivity coefficient and low density, and installing each baking oven tube in the baking oven in a spiral manner; s2, a rotatable supporting frame is assembled at the bottom of the oven, and the supporting frame supports the whole oven tube set to rotate; s3, the outer surface of the oven tube is coated with a nanometer heat insulation coating; s4, a micropore partition plate is arranged between the oven tubes to guide airflow to be evenly dispersed; the baking oven tube is made of a composite material with high heat conductivity coefficient and low density, the outer surface of the baking oven tube is coated with the nano heat insulation coating, heat loss is greatly reduced, the heat energy utilization rate is increased, meanwhile, the asymmetric spiral layout is adopted, the airflow path is optimized, the heat exchange efficiency is enhanced, and the PID controller is combined, so that the cost is reduced. Accurate control over the internal temperature of the oven is achieved, and the stability and controllability of the heating process are ensured.

Description

Technical Field

[0001] The invention relates to the technical field of energy-saving boilers, in particular to an arrangement method of energy-saving furnace tubes. Background Art

[0002] The traditional method of arranging oven tubes has many shortcomings, such as low thermal efficiency, low thermal energy utilization, and high maintenance costs. Most of the existing oven tubes are made of a single material, resulting in poor thermal conductivity. At the same time, due to the lack of a reasonable thermal energy management mechanism, a large amount of thermal energy is wasted during use. In addition, the unreasonable airflow organization inside the oven causes uneven heating of the material, affecting product quality. In addition, the lack of effective automated management and cleaning methods limits the overall operating efficiency and reliability of the oven.

[0003] As the requirements for energy conservation and environmental protection in industrial production are increasing, how to improve the arrangement method of drying furnace tubes to achieve the purpose of energy conservation and emission reduction has become an urgent problem to be solved. To this end, the present invention aims to provide a new energy-saving drying furnace tube arrangement method, which overcomes the defects of the prior art by optimizing the design, material selection, installation method and additional energy-saving measures of the drying furnace tubes. Summary of the invention

[0004] The object of the present invention is to provide an energy-saving method for arranging oven tubes to solve the problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions: A method for arranging energy-saving furnace tubes comprises the following steps: S1. Use composite materials with high thermal conductivity and low density to manufacture oven tubes to reduce heat loss and enhance heat conduction efficiency. Install each oven tube in a spiral shape inside the oven, and adjust the spiral angle to fit the internal space of the oven to ensure that the air flow path is maximized and the heat distribution is optimized. S2. A rotatable support frame is installed at the bottom of the oven. The support frame supports the entire oven tube group to rotate, which is convenient for cleaning and maintenance and ensures that the oven tube group is evenly heated; S3. Coat a layer of nano-insulation coating on the outer surface of the drying furnace tube, which can significantly reduce heat radiation loss, thereby improving the efficiency of heat energy use, and embed a temperature control sensor inside the drying furnace tube to monitor the temperature changes in the pipeline in real time and send the temperature data to the central control system to achieve precise temperature control; S4. Microporous partitions are set between the oven tubes to guide the airflow to disperse evenly and further improve the thermal efficiency; S5. Use computer simulation technology to optimize the spiral angle and spacing of the oven tube to ensure the best heat transfer effect and the lowest energy consumption.

[0006] Preferably, the distance between the oven tubes is selected through computer simulation and experimental verification to ensure an optimal air flow path and an efficient heat exchange process; The distance between the oven tubes is set between 10 mm and 30 mm, with a preferred value of 20 mm.

[0007] Preferably, the baking furnace tube is set to a variable cross-section, that is, the diameter gradually decreases from the inlet to the outlet, so as to expand the contact area between the front end and the material and reduce the heat loss at the rear end. The specific dimensions are 20 mm inlet diameter and 15 mm outlet diameter.

[0008] Preferably, the outer layer of the oven tube is provided with a nano thermal insulation coating, which is a mixture of silicon dioxide nanoparticles and polyimide resin, formed by spraying technology, and has a very low thermal conductivity (less than 0.02 W / m·K), and can maintain a high efficiency thermal insulation effect for a long time even under high temperature conditions; A reflective layer is provided on the nano heat-insulating coating, and the reflective layer is used to reflect the unabsorbed heat back to the inside of the oven, further improving the energy utilization rate; The reflective layer adopts a multi-layer structure, including a mixed layer of metal foil and ceramic particles to enhance the reflective effect; The surface of the reflective layer has been specially treated to be resistant to high temperatures and corrosion, thus extending its service life.

[0009] Preferably, it also includes an intelligent temperature control system based on a machine learning algorithm. The system uses multiple temperature sensors to detect the temperature of each position in the oven in real time, and automatically adjusts the heating intensity of each area through a PID controller to ensure that the entire heating process is always kept in the best state, thereby improving the heating accuracy and stability.

[0010] Preferably, a guide plate is installed inside the oven. The guide plate is made of high-temperature resistant stainless steel and is designed in an arc shape to guide the airflow direction, reduce turbulence and dead corners, and ensure that the material is evenly heated. The guide plate is provided with a microporous structure, which can spray atomized water droplets to adjust the humidity and meet the drying needs of various materials.

[0011] Preferably, the end of the drying furnace tube is connected to an efficient condensation recovery device, which uses a multi-stage condensation design to convert the residual heat in the exhaust gas into reusable thermal energy by gradually cooling it down, and then recycles it for raw material preheating or auxiliary heating, greatly improving energy utilization efficiency. The condenser is equipped with heat exchange fins to increase the heat exchange area and improve the heat exchange efficiency.

[0012] Preferably, the oven is designed as a modular multi-layer structure, each layer is individually equipped with a temperature control unit, and the operating parameters of each layer can be flexibly set according to the material characteristics, achieving precise processing of different materials. Insulating partitions are installed between the layers to avoid heat transfer and ensure independent control of the temperature of each layer.

[0013] Preferably, an automatic cleaning mechanism is provided on the oven tube to periodically clean the dust on the surface of the oven tube to maintain good heat transfer performance; The automatic cleaning mechanism uses ultrasonic vibration technology to effectively remove deposits on the pipe wall.

[0014] Preferably, the oven tubes adopt an asymmetric spiral layout, and the spiral angle varies in the range of 30° to 60°, with a preferred value of 45°, to further improve heat distribution and airflow path and improve heat exchange efficiency.

[0015] The present invention has at least the following beneficial effects: (1) This solution uses high thermal conductivity and low density composite materials to manufacture the oven tubes, and coats the outer surface with a nano-insulation coating, which greatly reduces heat loss and improves thermal energy utilization. At the same time, an asymmetric spiral layout is adopted to optimize the airflow path, enhance heat exchange efficiency, and introduce an intelligent temperature control system based on a machine learning algorithm, combined with a PID controller, to achieve precise control of the internal temperature of the oven, ensuring the stability and controllability of the heating process.

[0016] (2) This solution facilitates daily cleaning and maintenance by installing a rotatable support frame at the bottom of the oven. At the same time, it is equipped with an automatic cleaning mechanism that uses ultrasonic vibration technology to remove deposits on the tube wall, reducing the need for manual intervention.

[0017] (3) This solution connects the end of the drying furnace tube with a high-efficiency condensation recovery device, which can convert the residual heat in the exhaust gas into reusable thermal energy, further saving energy and complying with the concept of sustainable development.

[0018] (4) The modular multi-layer oven design of this solution allows users to flexibly adjust the operating parameters of each layer according to different material characteristics and requirements, and is suitable for a variety of industrial production scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1 The figure is a flow chart of the method of the present invention. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] See also Figure 1 The present invention provides a technical solution: a method for arranging energy-saving furnace tubes, a method for arranging energy-saving furnace tubes, characterized in that it comprises the following steps: S1. Use composite materials with high thermal conductivity and low density to manufacture oven tubes to reduce heat loss and enhance heat conduction efficiency. Install each oven tube in a spiral shape inside the oven, and adjust the spiral angle to fit the internal space of the oven to ensure that the air flow path is maximized and the heat distribution is optimized. The oven tubes are made of composite materials with high thermal conductivity (≥200 W / m·K) and low density (≤2 g / cm³).

[0023] S2. A rotatable support frame is installed at the bottom of the oven. The support frame supports the entire oven tube group to rotate, which is convenient for cleaning and maintenance and ensures that the oven tube group is evenly heated; S3. Coat a layer of nano-insulation coating on the outer surface of the drying furnace tube, which can significantly reduce heat radiation loss, thereby improving the efficiency of heat energy use, and embed a temperature control sensor inside the drying furnace tube to monitor the temperature changes in the pipeline in real time and send the temperature data to the central control system to achieve precise temperature control; The nano thermal insulation coating is made of a mixture of silicon dioxide (SiO2) nanoparticles and polyimide (PI) resin through a spraying process. The coating thickness is 10 μm to 50 μm and has an extremely low thermal conductivity (<0.02 W / m·K).

[0024] S4. Microporous partitions are set between the oven tubes to guide the airflow to disperse evenly and further improve the thermal efficiency; S5. Use computer simulation technology to optimize the spiral angle and spacing of the oven tube to ensure the best heat transfer effect and the lowest energy consumption.

[0025] It should be noted that in order to reduce heat loss and enhance heat conduction efficiency, we selected a composite material with high thermal conductivity and low density to manufacture the oven tube. Each oven tube is installed in a spiral manner inside the oven, and the spiral angle is adjusted according to the specific conditions of the oven's internal space to ensure the maximum air flow path and optimize heat distribution.

[0026] In some embodiments, the distance between the oven tubes is selected through computer simulation and experimental verification to ensure an optimal air circulation path and an efficient heat exchange process; The distance between the oven tubes is set between 10 mm and 30 mm, with a preferred value of 20 mm.

[0027] In some embodiments, the baking furnace tube is set to a variable cross-section, that is, the diameter gradually decreases from the inlet to the outlet to expand the contact area between the front end and the material and reduce the heat loss at the rear end. The specific dimensions are 20 mm inlet diameter and 15 mm outlet diameter.

[0028] The variable cross-section setting is based on the following calculations and experimental data: Calculation basis: By calculating the heat transfer coefficient at the inlet and outlet, it was found that the variable cross-section design provides a larger contact area at the inlet, thereby improving the heat transfer efficiency. The calculation results show that the heat transfer coefficient at the inlet is about 20% higher than that of the traditional equal cross-section design. The airflow distribution under the variable cross-section design was simulated using CFD (computational fluid dynamics) software. The results show that the variable cross-section design can better guide the airflow, reduce turbulence and dead corners, and improve the uniformity of the airflow.

[0029] The specific calculation results show that the variable cross-section design improves the heat transfer efficiency at the inlet, providing a specific percentage (20%). The simulation using CFD software shows the advantages of the variable cross-section design in airflow distribution, reducing turbulence and dead corners.

[0030] Experimental data: Under laboratory conditions, the variable cross-section design and the uniform cross-section design of the oven tube were compared, and the temperature distribution at different positions was measured. The experimental results showed that the variable cross-section design had a more uniform temperature distribution throughout the oven, and the temperature difference was reduced by about 15%. Energy consumption tests were conducted and found that the variable cross-section design of the oven tube reduced energy consumption by about 10% under the same heating conditions, proving the design's advantage in energy saving.

[0031] Through experimental measurements, the temperature distribution of the variable cross-section design and the uniform cross-section design was compared, and the reduction in temperature difference (15%) was specifically demonstrated. Energy consumption tests were conducted to prove the actual effect of the variable cross-section design in energy saving, and the percentage of energy consumption reduction (10%) was specifically demonstrated.

[0032] In some embodiments, the outer layer of the oven tube is provided with a nano thermal insulation coating, which is a mixture of silicon dioxide nanoparticles and polyimide resin, formed by spraying technology, and has a very low thermal conductivity (less than 0.02 W / m·K), and can maintain a high efficiency thermal insulation effect for a long time even under high temperature conditions; A reflective layer is provided on the nano heat-insulating coating, and the reflective layer is used to reflect the unabsorbed heat back to the inside of the oven, further improving the energy utilization rate; The reflective layer adopts a multi-layer structure, including a mixed layer of metal foil and ceramic particles to enhance the reflective effect; The surface of the reflective layer has been specially treated to be resistant to high temperatures and corrosion, thus extending its service life.

[0033] It should be noted that a nano-insulation coating is applied on the outer surface of the oven tube. The coating is mainly composed of a mixture of silica nanoparticles and polyimide resin, formed by spraying technology, and has an extremely low thermal conductivity (less than 0.02W / m·K). In addition, a reflective layer is provided on top of the nano-insulation coating. The reflective layer includes a mixed layer of metal foil and ceramic particles, which can reflect the unabsorbed heat back to the inside of the oven, further improving energy utilization.

[0034] In some embodiments, it also includes an intelligent temperature control system based on a machine learning algorithm. The system uses multiple temperature sensors to detect the temperature of various locations in the oven in real time, and automatically adjusts the heating intensity of each area through a PID controller to ensure that the entire heating process is always kept in the best state, thereby improving the heating accuracy and stability.

[0035] The specific implementation of the intelligent temperature control system is as follows: The temperature sensor collects temperature data at various points inside the oven in real time and transmits it to the central control system through the data acquisition module. The central control system cleans, stores and preprocesses the collected data to ensure the accuracy and integrity of the data. The preprocessed data is used to train the machine learning model to optimize the temperature control strategy. The central control system generates control instructions based on the trained model and sends them to the PID controller. The PID controller automatically adjusts the heating power of each area based on the received control instructions to ensure the accuracy and stability of temperature control. : The machine learning algorithm continuously monitors the temperature data and immediately issues an alarm and takes corresponding measures once an abnormality is detected.

[0036] Furthermore, the various components of the intelligent temperature control system are listed in detail, including temperature sensors, data acquisition modules, central control systems, and PID controllers, to ensure the integrity and functionality of the system. The specific application of machine learning algorithms in data training, real-time optimization, and anomaly detection is explained, highlighting its intelligent role in temperature control. The entire process from data acquisition to heating power adjustment is described in detail to ensure the specificity and operability of each step.

[0037] A guide plate is installed inside the oven. The guide plate is made of high-temperature resistant stainless steel and is designed in an arc shape to guide the airflow direction, reduce turbulence and dead corners, and ensure that the material is evenly heated. The guide plate is provided with a microporous structure, which can spray atomized water droplets to adjust the humidity and meet the drying needs of various materials.

[0038] The specific structure and working principle of the guide plate are as follows: The guide plate is made of high-temperature resistant stainless steel material, which has excellent high-temperature resistance and corrosion resistance, and can work stably for a long time in a high-temperature environment. The guide plate is designed in an arc shape, and the radius of curvature of the arc is optimized according to the internal space of the oven and the characteristics of the airflow to ensure smooth airflow. The height and width of the guide plate are customized according to the internal space of the oven and the characteristics of the material to ensure that the key areas are covered and the airflow distribution is optimized. The guide plate is fixedly installed at a key position inside the oven, and its angle and position can be adjusted by the adjustment device to meet different working conditions. There are micropores evenly distributed on the guide plate, with a pore size of about 0.5mm to 1.0mm and a pore spacing of 5mm to 10mm, to ensure uniform spraying of atomized water droplets. The micropores are connected to an independent injection system, which includes a water pump, a pipeline and a control valve, which can adjust the water flow and injection pressure as needed. By controlling the switch and water flow of the injection system, the humidity inside the oven can be accurately adjusted to meet the drying needs of different materials.

[0039] Working principle: The arc-shaped design of the guide plate can effectively guide the direction of airflow, reduce turbulence and dead corners, ensure uniform distribution of airflow, and improve the uniformity of heating of materials. When the humidity needs to be adjusted, the injection system sprays atomized water droplets through micropores. The water droplets are evenly distributed inside the oven under the action of the airflow to achieve the effect of adjusting the humidity. Temperature and humidity sensors are installed inside the oven to monitor temperature and humidity changes in real time, and feedback to the central control system. Precise control is achieved by adjusting the angle of the guide plate and the parameters of the injection system.

[0040] In some embodiments, the end of the drying furnace tube is connected to a high-efficiency condensation recovery device, which uses a multi-stage condensation design to convert the residual heat in the exhaust gas into reusable thermal energy by gradually cooling it down, and then recycles it for raw material preheating or auxiliary heating, greatly improving energy utilization efficiency. The condenser is equipped with heat exchange fins to increase the heat exchange area and improve the heat exchange efficiency.

[0041] The specific embodiment of the condensation recovery equipment is as follows: The multi-stage condenser is designed as follows: Primary condenser: Made of stainless steel, with large-area heat exchange fins inside, it uses a cooling water circulation system to perform initial cooling, reducing the exhaust gas temperature from 150°C to 100°C.

[0042] Secondary condenser: Made of copper material, it is equipped with a high-efficiency heat exchange tube bundle inside. The cooling water circulation system further cools the exhaust gas temperature from 100°C to 50°C.

[0043] Three-stage condenser: Made of aluminum material, with microporous heat exchange plates inside, the exhaust gas temperature is finally reduced to 30°C through the cooling water circulation system.

[0044] Heat exchange fins: The heat exchange fins are made of high temperature resistant aluminum alloy, which has good thermal conductivity and corrosion resistance. The heat exchange fins are arranged in a zigzag shape to increase the heat exchange area and improve the heat exchange efficiency. The thickness of the heat exchange fins is 0.5mm and the spacing is 5mm to ensure unobstructed airflow.

[0045] Cooling water circulation system: The cooling water comes from the factory's cooling tower or groundwater system at a temperature of about 20°C. A high-performance centrifugal pump is used to ensure that the cooling water circulates evenly in the multi-stage condenser. The temperature of the cooling water is monitored and adjusted in real time through a temperature sensor and a PID controller to ensure the condensation effect. Specific embodiment: Experimental conditions: In an industrial oven, the exhaust gas initial temperature is 150°C and the flow rate is 1000 m³ / h.

[0047] Experimental results: After passing through the primary condenser, the exhaust gas temperature drops to 100°C and the recovered heat is approximately 150 kW.

[0048] After passing through the secondary condenser, the exhaust gas temperature drops to 50°C and the recovered heat is approximately 100 kW.

[0049] After passing through the three-stage condenser, the exhaust gas temperature drops to 30°C and the recovered heat is about 50 kW.

[0050] Total recovered heat: The three-stage condenser recovers a total of about 300 kW of heat, significantly improving energy utilization.

[0051] In some embodiments, the oven is designed as a modular multi-layer structure, and each layer is individually equipped with a temperature control unit. The operating parameters of each layer can be flexibly set according to the material characteristics, thereby achieving precise processing of different materials. Insulating partitions are installed between the layers to avoid heat transfer and ensure independent control of the temperature of each layer.

[0052] The specific insulation measures for multi-layer structures are as follows: The insulation partition is made of high-density ceramic fiberboard, which has excellent insulation performance and high temperature resistance. The thickness of the insulation partition is 50mm to 100mm, ensuring sufficient insulation effect. The density of the insulation partition is 200kg / m³ to 300kg / m³, ensuring the lightness and high strength of the material.

[0053] Thermal insulation partition structure: The insulation partition adopts a multi-layer composite structure, including two layers of ceramic fiberboard inside and outside and a layer of aerogel material in the middle, which further improves the insulation effect. The surface of the insulation partition is specially treated to have high temperature resistance, corrosion resistance and moisture resistance, extending the service life. The insulation partition is installed between each layer through a fixed bracket and a sealing strip to ensure sealing and stability.

[0054] Thermal insulation effect: The thermal conductivity of the thermal insulation panel is lower than 0.04 W / m·K, which effectively prevents heat transfer.

[0055] Experiments have shown that the thermal insulation partition can control the temperature difference between adjacent layers within 5°C, ensuring that the temperature of each layer is independently controllable.

[0056] The specific embodiments are as follows: Experimental conditions: In a five-layer modular oven, the set temperatures of each layer were 100°C, 150°C, 200°C, 250°C and 300°C.

[0057] Experimental results: The actual temperatures of each layer were measured to be 100°C, 150°C, 200°C, 250°C and 300°C, and the temperature differences were all within 5°C. The maximum temperature difference between adjacent layers did not exceed 5°C, proving the effectiveness of the thermal insulation partition.

[0058] Through effective insulation measures, the temperature control of each floor is more precise, which improves energy utilization efficiency and reduces energy consumption.

[0059] In some embodiments, an automatic cleaning mechanism is provided on the oven tube to periodically clean dust on the surface of the oven tube to maintain good heat transfer performance; The automatic cleaning mechanism uses ultrasonic vibration technology to effectively remove deposits on the pipe wall.

[0060] The specific technical details of the automatic cleaning mechanism are as follows: The ultrasonic signal is generated by a high-frequency oscillation circuit, with a frequency range of 20kHz to 100kHz, which can be adjusted according to actual needs. The ultrasonic vibration head is installed on the outside of the drying furnace tube, in close contact with the surface of the drying furnace tube, and transmits energy through ultrasonic vibration to loosen and fall off the dirt on the tube wall. The power output range of the ultrasonic generator is 100W to 500W, which can be adjusted according to the degree of dirt and cleaning needs.

[0061] Automatic cleaning devices can be programmed to start automatically every 8 hours or every 12 hours, for example.

[0062] The selection of ultrasonic vibration frequency is based on experimental data. When the frequency is 40kHz, the cleaning effect is the best. The vibration intensity is moderate, which can effectively remove dirt without damaging the surface of the oven tube.

[0063] Experimental verification has shown that ultrasonic vibration technology can effectively remove more than 95% of pipe wall dirt, significantly improving heat transfer efficiency. Specific embodiment: Experimental conditions: In an industrial furnace, a large amount of ash accumulated on the surface of the furnace tube, affecting the heat transfer performance.

[0065] Experimental results: After cleaning using ultrasonic vibration technology, the dust deposited on the surface of the oven tubes was completely removed, and the heat transfer efficiency was increased by 20%.

[0066] Comparison before and after cleaning shows that the heat transfer coefficient has increased from the original 200 W / m²·K to 240 W / m²·K. By regularly using ultrasonic vibration technology for cleaning, the heat transfer efficiency of the oven has been significantly improved, saving energy costs of approximately RMB 100,000 per year.

[0067] In some embodiments, the oven tubes adopt an asymmetric spiral layout, and the spiral angle varies in the range of 30° to 60°, with a preferred value of 45°, to further improve heat distribution and airflow path and improve heat exchange efficiency.

[0068] The specific selection basis of the asymmetric spiral layout of the drying furnace tube is as follows: By calculating the heat transfer efficiency at different spiral angles, it was found that the heat transfer efficiency was high in the range of 30° to 60°, and the heat transfer efficiency was the highest at 45°. The specific calculation results showed that the heat transfer efficiency at 45° was 10% and 8% higher than that at 30° and 60°, respectively. The airflow distribution at different spiral angles was simulated using CFD (computational fluid dynamics) software. The results showed that the airflow distribution was more uniform in the range of 30° to 60°, and the airflow distribution was the most uniform at 45°, reducing turbulence and dead corners.

[0069] Under laboratory conditions, the temperature distribution and air flow velocity at different spiral angles were compared. The experimental results showed that the temperature distribution at 45° was the most uniform and the air flow velocity distribution was the most reasonable, which further verified the results of theoretical calculations. Specific embodiment: Experimental conditions: In an industrial oven, the oven tubes are arranged in an asymmetric spiral shape with spiral angles of 30°, 45° and 60° respectively.

[0071] Experimental results: The temperature distribution at 45° is the most uniform, with the smallest temperature difference, and the average temperature difference is 2°C, while the temperature differences at 30° and 60° are 4°C and 3.5°C, respectively. The airflow velocity distribution at 45° is the most uniform, with the smallest standard deviation of 0.5 m / s, while the standard deviations at 30° and 60° are 1.0 m / s and 0.8 m / s, respectively.

[0072] By optimizing the spiral angle, the heat exchange efficiency of the oven is significantly improved, saving energy costs every year.

[0073] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0074] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A method for arranging energy-saving furnace tubes, characterized in that: The following steps are involved: S1. Use composite materials with high thermal conductivity and low density to manufacture oven tubes. Install each oven tube in a spiral shape inside the oven, and adjust the spiral angle to fit the internal space of the oven, to ensure that the air flow path is maximized and the heat distribution is optimized. S2. A rotatable support frame is installed at the bottom of the oven, and the support frame supports the entire oven tube group to rotate; S3. Coat a layer of nano-insulation coating on the outer surface of the drying furnace tube, which can significantly reduce the heat radiation loss, and embed a temperature control sensor inside the drying furnace tube to monitor the temperature changes in the pipeline in real time; S4. Microporous partitions are arranged between the oven tubes to guide the airflow to be evenly dispersed; S5. Use computer simulation technology to optimize the spiral angle and spacing of the oven tube to ensure the best heat transfer effect and the lowest energy consumption.

2. The method for arranging energy-saving furnace tubes according to claim 1, characterized in that: The distance between the oven tubes is selected through computer simulation and experimental verification to ensure the optimal air flow path and efficient heat exchange process; And the distance between the oven tubes is set between 10 mm and 30 mm.

3. The method for arranging energy-saving furnace tubes according to claim 1, characterized in that: The baking furnace tube is arranged to have a variable cross-section, that is, the diameter gradually decreases from the inlet to the outlet, so as to expand the contact area between the front end and the material and reduce the heat loss at the rear end.

4. The method for arranging energy-saving furnace tubes according to claim 1, characterized in that: The outer layer of the oven tube is provided with a nano heat-insulating coating, which is a mixture of silicon dioxide nanoparticles and polyimide resin and is formed by spraying technology; A reflective layer is arranged on the nano heat-insulating coating, and the reflective layer is used to reflect the unabsorbed heat back to the inside of the oven; The reflective layer adopts a multi-layer structure, including a mixed layer of metal foil and ceramic particles to enhance the reflective performance.

5. The method for arranging energy-saving furnace tubes according to claim 1, characterized in that: It also includes an intelligent temperature control system based on a machine learning algorithm, which uses multiple temperature sensors to detect the temperature of various locations in the oven in real time, and automatically adjusts the heating intensity of each area through a PID controller.

6. The method for arranging energy-saving furnace tubes according to claim 1, characterized in that: A guide plate is installed inside the oven. The guide plate is made of high-temperature resistant stainless steel and is designed in an arc shape to guide the direction of airflow, reduce turbulence and dead corners, and a microporous structure is provided on the guide plate.

7. The method for arranging energy-saving furnace tubes according to claim 1, characterized in that: The end of the drying furnace tube is connected to a highly efficient condensation recovery device, which uses a multi-stage condensation design to convert the remaining heat in the exhaust gas into reusable thermal energy by gradually cooling it.

8. The method for arranging energy-saving furnace tubes according to claim 1, characterized in that: The oven is designed as a modular multi-layer structure. Each layer is equipped with a temperature control unit. The operating parameters of each layer can be flexibly set according to the material characteristics, realizing precise processing of different materials.

9. The method for arranging energy-saving furnace tubes according to claim 1, characterized in that: The drying furnace tube is equipped with an automatic cleaning mechanism, which uses ultrasonic vibration technology to effectively remove deposits on the tube wall.

10. The method for arranging energy-saving furnace tubes according to claim 1, characterized in that: The oven tubes adopt an asymmetric spiral layout, and the spiral angle varies from 30° to 60°.

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