Novel drying room with waste heat recovery function

Abstract

The utility model discloses a novel drying room with waste heat recovery, which belongs to the field of waste heat recovery and comprises a drying room, a steam-water heat exchanger and an ultra-high-temperature heat pump, a drying room air inlet pipe and a drying room exhaust pipe are connected between the drying room and the steam-water heat exchanger, an evaporator and a condenser are mounted in the ultra-high-temperature heat pump, and a smoke exhaust fan is mounted at the upper end of the drying room. A material inlet is formed in the right end of the drying room, and a hot water pipe and a warm water pipe are connected between the condenser and the steam-water heat exchanger, so that waste heat of the equipment can be recycled through the ultra-high-temperature heat pump, and hot water is prepared and used for heating hot air to be used for drying the drying room. The problems of short service life of heating equipment, increase of system pressure, low-efficiency operation of the system and increase of energy consumption caused by overhigh temperature can be reduced, and meanwhile, recovered heat can also be used for a drying room, so that the effects of energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] This utility model relates to the field of waste heat recovery, and more specifically, to a novel drying room with waste heat recovery. Background Technology

[0002] Drying is an indispensable key process in many fields such as industrial production and agricultural product processing. Whether it is the dehydration of chemical raw materials, the drying and shaping of wood, or the dehumidification and preservation of food and medicinal materials, drying room equipment plays a vital role. Traditional drying room systems mainly rely on coal-fired boilers, oil-fired boilers, or direct electric heating to provide the heat energy required for drying. However, these traditional heating methods have revealed many drawbacks in actual operation, which seriously restrict the sustainable development of the industry.

[0003] Waste heat refers to the sensible and latent heat that has not been rationally utilized in the original design of energy-consuming equipment in industrial enterprises that has been put into operation due to limitations such as historical, technological, and conceptual factors. It includes waste heat from high-temperature exhaust gas, waste heat from cooling media, waste steam and wastewater, waste heat from high-temperature products and slag, waste heat from chemical reactions, and waste heat from combustible exhaust gas, waste liquid, and waste materials. According to surveys, the total waste heat resources of various industries account for approximately 17% to 67% of their total fuel consumption, and the recoverable waste heat resources account for approximately 60% of the total waste heat resources.

[0004] Against this backdrop, developing a new type of drying room with waste heat recovery is of great practical significance. It can not only reduce the production costs of enterprises and improve their economic benefits, but also reduce environmental pollution and promote the green and sustainable development of the industry. Summary of the Invention

[0005] To address the problems existing in the prior art, the purpose of this utility model is to provide a novel drying chamber with waste heat recovery. It can utilize an ultra-high temperature heat pump to recover waste heat from the equipment and produce hot water, which is then used to heat the hot air for drying in the drying chamber. This can reduce the shortened lifespan of the heating equipment, increased system pressure, inefficient system operation, and increased energy consumption caused by excessively high temperatures. At the same time, the recovered heat can also be used in the drying chamber, thereby achieving the effect of energy saving and emission reduction.

[0006] To solve the above problems, this utility model adopts the following technical solution: a novel drying chamber with waste heat recovery, comprising a drying chamber, a steam-water heat exchanger, and an ultra-high temperature heat pump. An air inlet pipe and an exhaust pipe connect the drying chamber to the steam-water heat exchanger. An evaporator and a condenser are installed inside the ultra-high temperature heat pump. An exhaust fan is installed at the top of the drying chamber, and an exhaust pipe is installed above the exhaust fan. A material inlet is located at the right end of the drying chamber. A hot water pipe and a warm water pipe connect the condenser to the steam-water heat exchanger. This allows the ultra-high temperature heat pump to recover waste heat from the equipment and produce hot water, which is used to heat the hot air for drying in the drying chamber. This reduces the shortened lifespan of heating equipment, increased system pressure, and inefficient system operation caused by excessively high temperatures, thus reducing energy consumption. Simultaneously, the recovered heat can also be used in the drying chamber, thereby achieving energy saving and emission reduction.

[0007] As a further embodiment of this utility model: a control cabinet is provided on one side of the device, and multiple uniformly distributed metal materials are provided at the outer end of the drying chamber.

[0008] As a further improvement of this utility model, temperature sensors and valves are installed on the air inlet pipe, air outlet pipe, hot water pipe, and warm water pipe of the drying room.

[0009] As a further improvement of this utility model, a flow sensor is installed on the warm water pipe.

[0010] As a further improvement of this utility model: an air filter and a blower are installed on the exhaust pipe of the drying room, and a hot water pump is installed on the hot water pipe.

[0011] As a further embodiment of this utility model: pressure sensors are installed on both the air inlet pipe and the air outlet pipe of the drying chamber, a steam heat exchanger is installed on the air inlet pipe of the drying chamber, and a steam pipe is installed at the outer end of the steam heat exchanger.

[0012] Compared with existing technologies, the advantages of this utility model are:

[0013] 1. This device recovers and utilizes waste heat from equipment through an ultra-high temperature heat pump, converting the previously wasted waste heat into usable thermal energy to heat the circulating air in the drying room. Compared with traditional drying room systems, it greatly reduces reliance on traditional energy sources such as coal and oil, effectively reducing energy consumption. At the same time, the ultra-high temperature heat pump has a high energy efficiency ratio, enabling it to obtain more heat energy output with less electrical energy input, further improving energy utilization efficiency and significantly reducing the operating costs of enterprises.

[0014] 2. This device is equipped with multiple temperature and pressure sensors, which can monitor the temperature and pressure changes in the air inlet and outlet pipes, as well as the hot water and warm water pipes of the drying chamber in real time. Based on this real-time data, the control cabinet precisely controls the operation of equipment such as the ultra-high temperature heat pump, steam heat exchanger, and blower, achieving precise regulation of the temperature and pressure inside the drying chamber. This avoids the problem of accelerated aging of heating equipment due to prolonged exposure to high temperature and high pressure, effectively extending the service life of the heating equipment and reducing the company's equipment maintenance and replacement costs. At the same time, a stable temperature environment also helps to improve drying quality, reduce material quality problems caused by temperature fluctuations, and improve the product qualification rate.

[0015] 3. This device uses an ultra-high temperature heat pump to recover waste heat and produce hot water, eliminating the need to burn traditional energy sources such as coal and fuel oil. This fundamentally reduces the emission of pollutants such as sulfur dioxide, nitrogen oxides, and particulate matter, resulting in minimal pollution to the atmospheric environment. Furthermore, by recovering and utilizing waste heat from exhaust gases, the energy consumption of the entire drying system is reduced, thereby reducing greenhouse gas emissions. While achieving economic benefits for the enterprise, it also makes a positive contribution to environmental protection and promoting the green and sustainable development of the industry, demonstrating significant social and environmental benefits. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Explanation of the labels in the diagram:

[0018] 1. Drying oven; 2. Evaporator; 3. Condenser; 4. Temperature sensor; 5. Flow sensor; 6. Valve; 7. Pressure sensor; 8. Steam-water heat exchanger; 9. Steam pipe; 10. Steam heat exchanger; 11. Drying oven air inlet pipe; 12. Exhaust pipe; 13. Exhaust fan; 14. Material inlet; 15. Ultra-high temperature heat pump; 16. Air filter; 17. Blower; 18. Drying oven exhaust pipe; 19. Hot water pipe; 20. Warm water pipe; 21. Control cabinet; 22. Metal materials; 23. Hot water pump. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. Example

[0022] Please see Figure 1 A novel drying chamber with waste heat recovery includes a drying chamber 1, a steam-water heat exchanger 8, and an ultra-high temperature heat pump 15. An air inlet pipe 11 and an exhaust pipe 18 connect the drying chamber 1 and the steam-water heat exchanger 8. An evaporator 2 and a condenser 3 are installed inside the ultra-high temperature heat pump 15. An exhaust fan 13 is installed at the top of the drying chamber 1, and an exhaust duct 12 is installed above the exhaust fan 13. A material inlet 14 is located at the right end of the drying chamber 1. A hot water pipe 19 and a warm water pipe connect the condenser 3 and the steam-water heat exchanger 8. Equipment such as the steam-water heat exchanger 8 and the steam heat exchanger 10 are all made of stainless steel 316L or 2205 grade or higher corrosion-resistant materials with a wind resistance of less than 200P. It can realize the use of ultra-high temperature heat pump 15 to recover the waste heat of the equipment and produce hot water, which is used to heat the hot air for drying in the drying room 1. This can reduce the shortened life of heating equipment, increased system pressure, inefficient system operation and increased energy consumption caused by excessive temperature. At the same time, the recovered heat can also be used in the drying room 1, thereby achieving the effect of energy saving and emission reduction.

[0023] A control cabinet 21 is provided on one side of the device. Multiple evenly distributed metal materials 22 are provided at the outer end of the drying chamber 1. Temperature sensors 4 and valves 6 are installed on the drying chamber air inlet pipe 11, drying chamber exhaust pipe 18, hot water pipe 19 and warm water pipe 20. A flow sensor 5 is installed on the warm water pipe 20. An air filter device 16 and a blower 17 are installed on the drying chamber exhaust pipe 18. A hot water pump 23 is installed on the hot water pipe 19. Pressure sensors 7 are installed on both the drying chamber air inlet pipe 11 and the drying chamber exhaust pipe 18. A steam heat exchanger 10 is installed on the drying chamber air inlet pipe 11. A steam pipe 9 is installed at the outer end of the steam heat exchanger 10.

[0024] Working principle: The ultra-high temperature heat pump 15 recovers waste heat from the equipment and produces high-temperature hot water, which is then sent to the steam-water heat exchanger 8 through the hot water pipe 19 to heat the circulating air in the drying chamber 1. The low-temperature water after heat exchange is then sent back to the ultra-high temperature heat pump 15 for reheating through the warm water pipe 20. When the heat in the circulating air is insufficient, steam is introduced into the steam heat exchanger 10 to supplement it. When the air temperature in the drying chamber 1 cannot meet the drying requirements, the blower 17 is started, and the low-temperature air is cleaned by the air filter device 16 and sent back to the steam-water heat exchanger 8 for heating. Compared with the prior art, this utility model can realize the recovery of waste heat from the equipment and the production of hot water by the ultra-high temperature heat pump 15 for heating hot air for drying in the drying chamber 1. This can reduce the shortened life of the heating equipment, increased system pressure, inefficient system operation, and increased energy consumption caused by excessively high temperatures. At the same time, the recovered heat can also be used in the drying chamber 1, thereby achieving the effect of energy saving and emission reduction.

[0025] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.

Claims

1. A novel drying chamber with waste heat recovery comprising a drying chamber (1), a steam-water heat exchanger (8) and an ultra-high temperature heat pump (15), characterized in that, The drying room (1) is connected with the steam-water heat exchanger (8) through the drying room air inlet pipe (11) and the drying room air outlet pipe (18), the ultra-high temperature heat pump (15) is internally provided with the evaporator (2) and the condenser (3), the drying room (1) is internally provided with the exhaust fan (13), the exhaust fan (13) is internally provided with the exhaust pipe (12), the drying room (1) is internally provided with the material inlet (14), and the condenser (3) is connected with the steam-water heat exchanger (8) through the hot water pipe (19) and the warm water pipe (20).

2. A novel oven with waste heat recovery as claimed in claim 1, wherein, One side of the device is provided with the control cabinet (21), and the outer end of the drying room (1) is provided with a plurality of uniformly distributed metal materials (22).

3. A novel oven with waste heat recovery as claimed in claim 1, wherein, The temperature sensor (4) and the valve (6) are arranged on the drying room air inlet pipe (11), the drying room air outlet pipe (18), the hot water pipe (19) and the warm water pipe (20).

4. A novel oven with waste heat recovery as claimed in claim 1, wherein, The flow sensor (5) is arranged on the warm water pipe (20).

5. A novel oven with waste heat recovery as claimed in claim 1, wherein, The air filter device (16) and the air blower (17) are arranged on the drying room air outlet pipe (18), and the hot water pump (23) is arranged on the hot water pipe (19).

6. A novel oven with waste heat recovery as claimed in claim 1, wherein, The pressure sensor (7) is arranged on the drying room air inlet pipe (11) and the drying room air outlet pipe (18), the steam heat exchanger (10) is arranged on the drying room air inlet pipe (11), and the steam pipe (9) is arranged on the steam heat exchanger (10).

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