Fluidized bed temperature and humidity control system

Abstract

The utility model discloses a fluidized bed temperature and humidity control system in the technical field of fluidized beds. The system comprises a fluidized bed body, a heat exchange tube bundle is arranged in the fluidized bed body and provided with a heat exchange water inlet and a heat exchange water outlet, the heat exchange water inlet is communicated with a heat exchange water source through a heat exchange water inlet tube, and the heat exchange water outlet returns to the heat exchange water source through a heat exchange water outlet tube; the fluidized bed body is provided with an air inlet and an air outlet, the air inlet is communicated with external atmosphere through an air inlet pipe, and the air inlet pipe is provided with air supply equipment; a heating device is arranged on the air inlet pipe between the air supply device and the air inlet, and a humidifying device is arranged on a pipeline between the air inlet and the heating device; the humidifying equipment comprises a steam humidifier and a spray humidifier; a first temperature sensor and a first humidity sensor are arranged in the fluidized bed body, and a second temperature sensor and a second humidity sensor are arranged at the position, between the air inlet and the humidifying device, of the air inlet pipe. The temperature and humidity adjusting device has the advantage of accelerating temperature and humidity adjustment.

Description

Technical Field

[0001] This utility model relates to the field of fluidized bed technology, and in particular to a fluidized bed temperature and humidity control system. Background Technology

[0002] The working principle of a fluidized bed is based on the interaction between solid particles and fluid, which causes the solid particles to be in a suspended and flowing state under the action of fluid flow, thus forming solid fluidization.

[0003] The prior art discloses a process air control system for fluidized beds and a fluidized bed, with authorization announcement number CN211372941 U and authorization announcement date of 2020.08.28. The prior art controls the temperature through an electric heater. However, for the purpose of granulation or coating, it is necessary to spray adhesive or coating liquid on the surface of the material. At this time, whether it is granulation or coating, the control accuracy and stability of temperature and humidity are very important.

[0004] This shows that for temperature control, existing technologies only raise the temperature, while cooling is achieved by directly introducing cold outside air, which cannot quickly regulate the temperature. At the same time, for humidity control, hot steam is generally used to regulate the humidity of the incoming air. However, when both cooling and humidification are required, the use of hot steam directly affects the cooling effect, thus failing to quickly regulate both temperature and humidity and reducing production efficiency. Utility Model Content

[0005] The purpose of this invention is to provide a fluidized bed temperature and humidity control system that accelerates the regulation of temperature and humidity.

[0006] To achieve the above-mentioned objectives of this utility model, the fluidized bed temperature and humidity control system adopts the following technical solution:

[0007] A fluidized bed temperature and humidity control system includes a fluidized bed body, inside which a heat exchange tube bundle is provided. The heat exchange tube bundle has a hot water inlet and a hot water outlet. The hot water inlet is connected to a hot water source through a hot water inlet pipe, and the hot water outlet returns to the hot water source through a hot water outlet pipe. The fluidized bed body has an air inlet and an air outlet. The air inlet is located at the bottom of the fluidized bed body, and the air outlet is located at the top of the fluidized bed body. The air inlet is connected to the outside atmosphere through an air inlet pipe, which is equipped with an air supply device. A heating device is provided between the air supply device and the air inlet on the air inlet pipe, and a humidification device is provided on the pipe between the air inlet and the heating device on the air inlet pipe. The humidification device includes a steam humidifier and a spray humidifier. The steam port of the steam humidifier is connected to a steam pipe, and the spray port of the spray humidifier is connected to a spray pipe. The steam pipe and the spray pipe are connected in parallel to the air inlet pipe. The steam pipe is equipped with a steam valve, and the spray pipe is equipped with a spray valve. The steam humidifier has a first water storage chamber, which is connected to a first humidification pipe; the spray humidifier has a second water storage chamber, which is connected to a second humidification pipe; the first and second humidification pipes are connected in parallel to a main humidification pipe, and a first three-way valve is installed at the junction of the first, second, and main humidification pipes; the other end of the main humidification pipe is connected to a hot water inlet pipe, and the main humidification pipe is equipped with a humidification valve; a heat exchange valve is installed on the hot water inlet pipe between the main humidification pipe and the hot water inlet; a dehumidification pipe is connected in parallel between the humidification equipment and the heating equipment, and a dehumidifier is installed on the dehumidification pipe; both the input and output ends of the dehumidification pipe are connected to the air inlet pipe, and a second three-way valve is installed between the input end of the dehumidification pipe and the air inlet pipe; a first temperature sensor and a first humidity sensor are installed inside the fluidized bed body, and a second temperature sensor and a second humidity sensor are installed on the air inlet pipe between the air inlet and the humidification equipment.

[0008] Preferably, the heat exchange source includes a hot water source and a cold water source. The hot water source includes a hot water tank, which has a first outlet and a first return outlet. The first outlet has a first outlet pipe, and the first return outlet has a first return pipe. The cold water source includes a cold water tank, which has a second outlet and a second return outlet. The second outlet has a second outlet pipe, and the second return outlet has a second return pipe. A third three-way valve is provided between the hot water inlet pipe, the first outlet pipe, and the second outlet pipe, and a fourth three-way valve is provided between the hot water outlet pipe, the first return pipe, and the second return pipe. This invention, by setting up hot and cold water sources, allows for rapid temperature control. When cooling is required, the system simultaneously introduces outside air and uses the cold water source for heat exchange, accelerating the cooling of the fluidized bed. When heating is required, the system simultaneously introduces hot air and uses the hot water source for heat exchange, accelerating the heating of the fluidized bed, thus facilitating rapid temperature regulation.

[0009] Preferably, the heat exchange tube bundle is arranged in a spiral pattern along the circumference of the fluidized bed body, with support frames at both the upper and lower ends, and the support frames are fixed to the inner wall of the fluidized bed body. Because the heat exchange tube bundle is placed inside the fluidized bed body and arranged in a spiral pattern along the circumference of the fluidized bed body, the temperature inside the fluidized bed body is more uniform, allowing for sufficient contact with the fluidized material and improving the heat exchange effect.

[0010] Preferably, the hot water inlet is located at the lower end of the fluidized bed body, and the hot water outlet is located at the upper end of the fluidized bed body.

[0011] Preferably, the fluidized bed body is provided with a material inlet and a material outlet, the material inlet being located at the top of the fluidized bed body and the material outlet being located at the bottom of the fluidized bed body.

[0012] Preferably, the bottom of the fluidized bed body is provided with an air distribution plate, and the air distribution plate is provided with an air cap.

[0013] Preferably, the air supply device is a blower.

[0014] Preferably, the heating device is an electric heater.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0016] 1. This utility model uses heat exchange tube bundles to exchange heat inside the fluidized bed body, which, combined with the inlet air temperature, enables rapid temperature regulation.

[0017] 2. The humidification equipment of this utility model adopts a steam humidifier and a spray humidifier. When heating and humidification are required, steam is introduced for humidification; when cooling and humidification are required, cold water mist is introduced for humidification. This invention controls the temperature of the water vapor during humidification, making it more adaptable to the required temperature and humidity, improving the control of temperature and humidity, improving work efficiency, and offering greater flexibility in actual use, thus possessing practicality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the heat exchanger tube bundle installation.

[0020] Figure 3 This is a schematic diagram of the support frame installation.

[0021] The components include: 1. Fluidized bed body; 2. Heat exchanger tube bundle; 201. Hot water inlet; 202. Hot water outlet; 3. Material inlet; 4. Exhaust port; 5. Support frame; 6. Material outlet; 7. Air inlet; 8. Air distribution plate; 9. Air cap; 10. First humidity sensor; 11. First temperature sensor; 12. Heat exchanger valve; 13. Hot water outlet pipe; 14. Main humidification pipe; 15. Second water outlet pipe; 16. First three-way valve; 17. First humidification pipe; 18. Steam humidifier; 19. Steam valve; 20. Steam pipe. 21 Air inlet pipe, 22 Spray pipe, 23 Spray valve, 24 Spray humidifier, 25 Second humidification pipe, 26 Heating equipment, 27 Blower, 28 Humidification valve, 29 Hot water inlet pipe, 30 Third three-way valve, 31 First outlet pipe, 32 Hot water tank, 33 First return water pipe, 34 Fourth three-way valve, 35 Second return water pipe, 36 Cold water tank, 37 Second temperature sensor, 38 Second humidity sensor, 39 Dehumidifier, 40 Second three-way valve, 41 Dehumidification piping. Detailed Implementation

[0022] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are only for illustrating the present invention and not for limiting the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0023] like Figure 1-3As shown, a fluidized bed temperature and humidity control system includes a fluidized bed body 1. The fluidized bed body 1 has a material inlet 3 and a material outlet 6. The material inlet 3 is located at the top of the fluidized bed body 1, and the material outlet 6 is located at the bottom of the fluidized bed body 1. A heat exchange tube bundle 2 is provided inside the fluidized bed body 1. The heat exchange tube bundle 2 is arranged in a spiral pattern along the circumference of the fluidized bed body 1 in a meandering manner. Support frames 5 are provided at both the upper and lower ends of the heat exchange tube bundle 2, and the support frames 5 are fixed to the inner wall of the fluidized bed body 1. The heat exchange tube bundle 2 has a hot water inlet 201 and a hot water outlet 202. The hot water inlet 201 is located at the bottom of the fluidized bed body 1, and the hot water outlet 202 is located at the top of the fluidized bed body 1. The hot water inlet 201 is connected to a hot water inlet pipe. 29 connects to the hot water source, and the hot water outlet 202 returns to the hot water source through the hot water outlet pipe 13; the hot water source includes a hot water source and a cold water source. The hot water source includes a hot water tank 32, which has a first outlet and a first return outlet. The first outlet has a first outlet pipe 31, and the first return outlet has a first return pipe 33. The cold water source includes a cold water tank 36, which has a second outlet and a second return outlet. The second outlet has a second outlet pipe 15, and the second return outlet has a second return pipe 35. A third three-way valve 30 is provided between the hot water inlet pipe 29, the first outlet pipe 31, and the second outlet pipe 15, and a fourth three-way valve 34 is provided between the hot water outlet pipe 13, the first return pipe 33, and the second return pipe 35; fluidization. The fluidized bed body 1 is provided with an air inlet 7 and an exhaust outlet 4. The air inlet 7 is located at the bottom of the fluidized bed body 1, and the exhaust outlet 4 is located at the top of the fluidized bed body 1. An air distribution plate 8 is provided at the bottom of the fluidized bed body 1, and the air distribution plate 8 is provided with an air cap 9. The air inlet 7 is connected to the outside atmosphere through an air inlet pipe, and the air inlet pipe is equipped with an air supply device, which is a blower 27. A heating device 26, which is an electric heater, is provided between the air supply device and the air inlet in the air inlet pipe. A humidification device is provided on the pipe between the air inlet 7 and the heating device 26. The humidification device includes a steam humidifier 18 and a spray humidifier 24. The steam port of the steam humidifier 18 is connected to a steam pipe 20, and the spray port of the spray humidifier 24 is connected to a spray pipe 22. Steam pipe 20 and spray pipe 22 are connected in parallel to air inlet pipe 21. Steam pipe 20 is equipped with steam valve 19, and spray pipe 22 is equipped with spray valve 23. Steam humidifier 18 is equipped with a first water storage chamber, which is connected to a first humidification pipe 17. Spray humidifier 24 is equipped with a second water storage chamber, which is connected to a second humidification pipe 25. The first humidification pipe 17 and the second humidification pipe 25 are connected in parallel to main humidification pipe 14. A first three-way valve 16 is provided at the junction of the first humidification pipe 17, the second humidification pipe 25, and the main humidification pipe 14. The other end of the main humidification pipe 14 is connected to hot water inlet pipe 29. The main humidification pipe 14 is equipped with humidification valve 28. The hot water inlet pipe 29 is located between the main humidification pipe and the hot water inlet 201 and is equipped with heat exchange valve 12.An air inlet pipe 21 is located between the humidification equipment and the heating equipment 26, and a dehumidification pipe 41 is connected in parallel. A dehumidifier 39 is installed on the dehumidification pipe 41. Both the input and output ends of the dehumidification pipe 41 are connected to the air inlet pipe 21. A second three-way valve 40 is installed between the input end of the dehumidification pipe 41 and the air inlet pipe 21. A first temperature sensor 11 and a first humidity sensor 10 are installed inside the fluidized bed body 1. A second temperature sensor 37 and a second humidity sensor 38 are installed between the air inlet 7 and the humidification equipment on the air inlet pipe 21.

[0024] The specific working process and principle of this utility model are as follows: First, the blower 27 is turned on, and the outside air enters the air inlet pipe. After being heated by the heating device 26, it forms hot air. The hot air enters the fluidized bed body 1 and forms an upward airflow. At this time, the wet material is put into the fluidized bed body 1 from the material inlet 3. Under the action of the airflow, it becomes suspended, so that the wet material is in full contact with the hot air, and heat and moisture are transferred. The processed material is discharged from the material outlet 6, and the waste gas is discharged through the exhaust port 4. At the same time, the first temperature sensor 11 and the second humidity sensor 38 set inside the fluidized bed body 1, and the second temperature sensor 37 and the second humidity sensor 38 set in the air inlet pipe 21, improve the control of temperature and humidity.

[0025] When the temperature inside the fluidized bed body 1 is detected to be low, hot air is introduced through the air inlet pipe, and the temperature inside the air inlet pipe 21 is detected by the second temperature sensor 37 to ensure the heating effect of the hot air. At the same time, hot water is injected into the heat exchange tube bundle 2 for heating, which accelerates the rise of the temperature inside the fluidized bed body 1.

[0026] When the temperature inside the fluidized bed body 1 is detected to be high, the heating equipment 26 is turned off. At the same time, cold water is injected into the heat exchange tube bundle 2 to cool down and accelerate the reduction of the temperature inside the fluidized bed body 1.

[0027] When the temperature and humidity inside the fluidized bed body 1 are both low, hot water is injected into the hot water inlet pipe for heating. At the same time, the steam valve 19 is opened to send the hot water in the hot water inlet pipe into the steam humidifier 18. The steam humidifier 18 heats the water to convert it into steam, then sprays the steam into the steam pipe 20, and then into the air inlet pipe. The steam is then sent into the interior of the fluidized bed body 1 along with the hot air in the air inlet pipe. Meanwhile, the temperature and humidity of the incoming air are detected by the second temperature sensor 37 and the second humidity sensor 38 to ensure the humidification and heating effect, which is conducive to accelerating the regulation of temperature and humidity. When heating and humidification are required, this utility model uses the steam humidifier 18 to introduce hot steam for humidification, which enhances the heating effect while humidifying, further accelerating the regulation of humidity and temperature.

[0028] When the temperature and humidity inside the fluidized bed body 1 are detected to be high and low, cold water is injected into the heat exchange tube bundle 2 for cooling. Simultaneously, the spray valve 23 is opened, and cold water from the hot water inlet pipe is sent to the spray humidifier 24. The spray humidifier 24 atomizes the water into fine droplets under high pressure, then sprays them into the spray pipe 22, and then into the air inlet pipe. At the same time, the heating device 26 is shut off, and the outside atmosphere enters the air inlet pipe. The atomized water droplets from the spray humidifier 24, along with the cold air from the air inlet pipe, are then sent into the interior of the fluidized bed body 1. The temperature and humidity of the incoming air are detected by the second temperature sensor 37 and the second humidity sensor 38 to ensure the effectiveness of humidification and cooling, thus accelerating the regulation of temperature and humidity. This invention uses the spray humidifier 24 to introduce cold water mist for humidification when cooling and humidification are needed, achieving both humidification and cooling simultaneously, further accelerating the regulation of humidity and temperature.

[0029] This invention controls the temperature of water vapor during humidification, making it more adaptable to the required temperature and humidity, thereby improving temperature and humidity control and increasing work efficiency.

[0030] When the temperature inside the fluidized bed 1 is found to be suitable and the humidity is low, the spray humidifier 24 or the steam humidifier 18 can be used for humidification.

[0031] When the temperature and humidity inside the fluidized bed body 1 are found to be suitable, the dehumidifier 39 is turned on to remove the moisture in the air in the air inlet pipe, ensuring the dryness of the air inside the fluidized bed body 1.

[0032] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0033] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0034] The foregoing description illustrates and describes preferred embodiments of the present invention. As previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept described herein through the foregoing teachings or related technical or knowledge. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A fluidized bed temperature and humidity control system, characterized in that: The fluidized bed body includes a heat exchange tube bundle inside, which has a hot water inlet and an outlet. The hot water inlet is connected to a hot water source via a hot water inlet pipe, and the hot water outlet returns to the hot water source via a hot water outlet pipe. The fluidized bed body also has an air inlet and an air outlet. The air inlet is located at the bottom of the fluidized bed body, and the air outlet is located at the top. The air inlet is connected to the outside atmosphere via an air inlet pipe, which is equipped with an air supply device. A heating device is installed between the air supply device and the air inlet on the air inlet pipe, and a humidification device is installed on the pipe between the air inlet and the heating device. The humidification device includes a steam humidifier and a spray humidifier. The steam port of the steam humidifier is connected to a steam pipe, and the spray port of the spray humidifier is connected to a spray pipe. The steam pipe and the spray pipe are connected in parallel to the air inlet pipe. The steam pipe is equipped with a steam valve, and the spray pipe is equipped with a spray valve. The system includes a first water storage chamber connected to a first humidification pipe; a second water storage chamber connected to a second humidification pipe; the first and second humidification pipes are connected in parallel to a main humidification pipe, and a first three-way valve is installed at the junction of the first, second, and main humidification pipes; the other end of the main humidification pipe is connected to a hot water inlet pipe, and the main humidification pipe is equipped with a humidification valve; a heat exchange valve is installed on the hot water inlet pipe between the main humidification pipe and the hot water inlet; an air inlet pipe is connected in parallel to a dehumidification pipeline between the humidification and heating equipment, and a dehumidifier is installed on the dehumidification pipeline; both the input and output ends of the dehumidification pipeline are connected to the air inlet pipe, and a second three-way valve is installed between the input end of the dehumidification pipeline and the air inlet pipe; a first temperature sensor and a first humidity sensor are installed inside the fluidized bed body, and a second temperature sensor and a second humidity sensor are installed on the air inlet pipe between the air inlet and the humidification equipment.

2. The fluidized bed temperature and humidity control system according to claim 1, characterized in that: The hot water source includes a hot water source and a cold water source. The hot water source includes a hot water tank, which has a first outlet and a first return outlet. The first outlet has a first outlet pipe, and the first return outlet has a first return pipe. The cold water source includes a cold water tank, which has a second outlet and a second return outlet. The second outlet has a second outlet pipe, and the second return outlet has a second return pipe. A third three-way valve is provided between the hot water inlet pipe, the first outlet pipe, and the second outlet pipe. A fourth three-way valve is provided between the hot water outlet pipe, the first return pipe, and the second return pipe.

3. The fluidized bed temperature and humidity control system according to claim 1, characterized in that: The heat exchange tube bundle is arranged in a spiral pattern along the circumference of the fluidized bed body in a meandering manner. Support frames are provided at both the upper and lower ends of the heat exchange tube bundle, and the support frames are fixed to the inner wall of the fluidized bed body.

4. The fluidized bed temperature and humidity control system according to claim 1, characterized in that: The hot water inlet is located at the lower end of the fluidized bed body, and the hot water outlet is located at the upper end of the fluidized bed body.

5. The fluidized bed temperature and humidity control system according to claim 1, characterized in that: The fluidized bed body is provided with a material inlet and a material outlet. The material inlet is located at the top of the fluidized bed body, and the material outlet is located at the bottom of the fluidized bed body.

6. The fluidized bed temperature and humidity control system according to claim 1, characterized in that: The bottom of the fluidized bed body is provided with an air distribution plate, and the air distribution plate is provided with an air cap.

7. The fluidized bed temperature and humidity control system according to claim 1, characterized in that: The air supply equipment is a blower.

8. The fluidized bed temperature and humidity control system according to claim 1, characterized in that: The heating device is an electric heater.

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