Waste heat recycling system of tobacco leaf baking room

Abstract

The utility model discloses a waste heat recycling system of a tobacco leaf baking room, which is characterized in that after gas in the baking room is led out from the system, latent heat is released in a quick cooling and absorption mode of cooling liquid, namely, water vapor is liquefied, and then heat is further absorbed through heat exchange fins, so that the waste heat of the tobacco leaf baking room is recovered. Heat absorbed by the cooling liquid and the heat exchange fins heats air from the outside to become hot air, and then the hot air is input into the combustion chamber of the baking room, so that the fuel consumption of the combustion chamber is reduced, and the effects of energy conservation and emission reduction are achieved.

Description

Technical Field

[0001] The utility model relates to an auxiliary system for improving the heat utilization efficiency of a tobacco leaf baking room, in particular to a waste heat recovery and utilization system of the tobacco leaf baking room. Background Art

[0002] During the tobacco leaf baking process, more than 80% of the tobacco leaf's weight will be baked out in the form of water, and finally discharged out of the baking room in the form of water vapor. Water vapor contains a large amount of latent heat, and the temperature of the discharged gas is much higher than the room temperature, so it will also cause a lot of heat waste. However, there is currently no effective waste heat recovery system for tobacco leaf baking rooms.

[0003] Due to the above reasons, the inventors have conducted in-depth research on existing tobacco leaf curing rooms in the hope of designing a system that can be adapted to various types of existing curing rooms and can recycle the waste heat of tobacco leaf curing rooms. Utility Model Content

[0004] In order to overcome the above-mentioned problems, the inventors have conducted intensive research and designed a waste heat recovery and utilization system for a tobacco leaf curing room; after the gas in the curing room is drawn out in this system, the latent heat is first released by means of rapid cooling and absorption by a coolant, that is, the water vapor is liquefied, and then the heat is further absorbed by heat exchange fins. The heat absorbed by the coolant and the heat exchange fins heats the air from the outside, making it hot air, and then inputs it into the combustion chamber of the curing room, thereby reducing the fuel consumption in the combustion chamber, achieving the effect of energy conservation and emission reduction, thereby completing the utility model.

[0005] Specifically, the purpose of the utility model is to provide a waste heat recovery and utilization system for a tobacco leaf curing room, the system comprising a liquefaction tank 1, a condensation tank 2 and a fan 3;

[0006] The fan 3 draws hot air containing water vapor from the tobacco leaf curing room.

[0007] The fan 3 is connected to a first pipe 4, and the first pipe 4 extends into the bottom of the coolant in the liquefied tank 1.

[0008] The liquefaction tank 1 is also provided with a second pipe 5 connected to the condensation tank 2. The air coming out of the liquefaction tank 1 enters the condensation tank 2 through the second pipe 5 to be condensed, and then is discharged from the exhaust pipe 21 on the condensation tank 2.

[0009] The outside air absorbs heat and heats up through the condensation tank 2 and the liquefaction tank 1 in turn, and then enters the tobacco leaf curing room.

[0010] A flexible net 41 is provided at the bottom of the first pipe 4 to break up the air coming out of the first pipe 4 into small bubbles, so that the hot air can fully contact the coolant, so that the water vapor carried in the hot air can be fully liquefied to release latent heat.

[0011] One end of the second pipe 5 is located at the top of the liquefaction tank 1 , and the other end is located at the bottom of the condensation tank 2 .

[0012] The condensing tank 2 is provided with a plurality of heat transfer fins 61, and a plurality of branch pipes 62 connected in parallel pass through the heat transfer fins 61.

[0013] One end of the plurality of branch pipes 62 is connected to the outside air, and the other end thereof converges into the third pipe 63 .

[0014] A spiral coil 64 connected to the three pipes 63 is provided in the liquefaction tank 1 . The spiral coil 64 is located below the liquid surface of the coolant and surrounds the outer side of the first pipe 4 .

[0015] The bottom of the condensation tank 2 is an inclined surface, which is inclined toward one side to collect condensed water. A drainage port 22 is arranged at the bottom of the side of the condensation tank 2 .

[0016] The tobacco leaf baking room includes a combustion chamber 7 and a baking chamber 8, and the spiral coil 64 is connected to the combustion chamber 7, that is, the outside air absorbs heat and is heated before being input into the combustion chamber 7.

[0017] The tobacco leaf curing room is also provided with a heating fan 91, which is used to transport the hot air generated by combustion to the curing chamber 8 through the air guide pipe 92 to provide heat for the curing chamber 8;

[0018] The temperature of the hot air flow decreases after passing through the tobacco leaves to be cured, and after being mixed with the water vapor overflowing from the tobacco leaves to be cured, it is drawn out by the fan 3.

[0019] The beneficial effects of the utility model include:

[0020] (1) According to the waste heat recovery and utilization system of the tobacco leaf curing room provided by the utility model, the system converts the water vapor generated by curing into liquid, thereby fully releasing the latent heat therein, thereby recovering and utilizing the heat in the curing room to the greatest extent, and improving the overall energy utilization efficiency of the curing equipment;

[0021] (2) According to the waste heat recovery system of the tobacco leaf curing room provided by the utility model, the system also includes heat transfer fins to further dissipate the heat in the gas, thereby ensuring that the temperature of the gas finally discharged into the atmosphere is closer to the room temperature;

[0022] (3) According to the waste heat recovery system of the tobacco leaf curing room provided by the utility model, the outside air absorbs heat through the heat transfer fins and the spiral coil in turn, and then enters the combustion chamber after becoming hot air, so as to reduce the fuel consumption in the combustion chamber. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 The overall structural schematic diagram of the waste heat recovery and utilization system of the tobacco leaf curing room provided by the utility model is shown;

[0024] Figure 2 A schematic diagram showing a waste heat recovery and utilization system of a tobacco leaf curing room provided by the utility model and the tobacco leaf curing room in which the waste heat recovery and utilization system is located is shown.

[0025] Description of Reference Numerals

[0026] 1-Liquefaction tank

[0027] 2-Condensation tank

[0028] 21- Exhaust pipe

[0029] 22-Drainage outlet

[0030] 3-Blower

[0031] 4-First pipeline

[0032] 41-Flexible Net

[0033] 5- Second pipeline

[0034] 61-Heat transfer fins

[0035] 62-Branch

[0036] 63-Third Pipe

[0037] 64-Spiral coil

[0038] 7- Combustion chamber

[0039] 8- Baking chamber

[0040] 91-Heating fan

[0041] 92-airway DETAILED DESCRIPTION

[0042] The present invention is further described in detail below through the accompanying drawings and embodiments. Through these descriptions, the features and advantages of the present invention will become clearer and more specific.

[0043] The word "exemplary" is used exclusively herein to mean "serving as an example, embodiment, or illustration." Any embodiment described herein as "exemplary" is not necessarily to be construed as preferred or advantageous over other embodiments. Although various aspects of the embodiments are shown in the drawings, the drawings are not necessarily drawn to scale unless otherwise noted.

[0044] According to the waste heat recovery and utilization system of a tobacco leaf curing room provided by the utility model, Figure 1 , Figure 2 As shown in , the system includes a liquefaction tank 1, a condensation tank 2 and a fan 3;

[0045] The fan 3 draws hot air containing water vapor from the tobacco leaf curing room.

[0046] The fan 3 is connected to a first pipe 4 , and the first pipe 4 extends into the bottom of the coolant in the liquefaction tank 1 .

[0047] In the present application, the liquefaction tank 1 is a closed tank body, which can be made of metal or plastic material, and has an anti-corrosion coating inside to increase its service life;

[0048] The cooling liquid can be tap water, which can not only reduce costs, but also achieve sufficient cooling conversion effect, so that the water vapor carried in the hot air can be fully liquefied to release latent heat. The waste heat in this application includes the latent heat released by phase change and the heat in the hot air.

[0049] The liquefaction tank 1 is also provided with a second pipe 5 connected to the condensation tank 2. The air coming out of the liquefaction tank 1 enters the condensation tank 2 through the second pipe 5 to be condensed, and then is discharged from the exhaust pipe 21 on the condensation tank 2.

[0050] One end of the second pipe 5 is located at the top of the liquefaction tank 1, and the other end is located at the bottom of the condensation tank 2, so that the air in the second pipe 5 can fully contact the heat transfer fins to improve the heat exchange effect.

[0051] Preferably, the outside air absorbs heat and is heated through the condensation tank 2 and the liquefaction tank 1 in sequence, and then enters the tobacco leaf curing room.

[0052] In a preferred embodiment, a flexible net 41 is provided at the bottom of the first pipe 4 to break up the air coming out of the first pipe 4 into small bubbles, so that the hot air can fully contact with the coolant, so that the water vapor carried in the hot air can be fully liquefied to release latent heat.

[0053] In a preferred embodiment, the condensing tank 2 is provided with a plurality of heat transfer fins 61, and a plurality of branch pipes 62 arranged in parallel pass through the heat transfer fins 61, so that the air in the branch pipes 62 can fully exchange heat with the hot air outside the heat transfer fins 61;

[0054] One end of the plurality of branch pipes 62 is connected to the outside air, and the other end is gathered to the third pipe 63. That is, the outside air passes through the plurality of branch pipes 62 and the heat transfer fins 61 and then enters the third pipe 63.

[0055] In a preferred embodiment, a spiral coil 64 connected to the three pipes 63 is provided in the liquefaction tank 1. The spiral coil 64 is located below the liquid surface of the coolant and surrounds the outer side of the first pipe 4, so that the spiral coil 64 is in full contact with the coolant, absorbs the heat in the coolant, and heats the air in the spiral coil 64.

[0056] Preferably, the bottom of the condensation tank 2 is an inclined surface, which is inclined toward one side to collect condensed water, and a drain port 22 is provided at the bottom of the side of the condensation tank 2 .

[0057] Preferably, the tobacco leaf curing room comprises a combustion chamber 7 and a curing chamber 8, and the spiral coil 64 is connected to the combustion chamber 7, that is, the outside air absorbs heat and is heated before being input into the combustion chamber 7.

[0058] The tobacco leaf curing room is also provided with a heating fan 91, which is used to transport the hot air generated by combustion to the curing chamber 8 through the air guide pipe 92 to provide heat for the curing chamber 8;

[0059] The temperature of the hot air flow decreases after passing through the tobacco leaves to be cured, and after being mixed with the water vapor overflowing from the tobacco leaves to be cured, it is drawn out by the fan 3.

[0060] The present invention has been described above in conjunction with preferred embodiments, but these embodiments are only exemplary and serve only as an illustration. On this basis, the present invention may be subjected to a variety of substitutions and improvements, all of which fall within the scope of protection of the present invention.

Claims

1. A waste heat recovery system for a tobacco leaf curing room, characterized in that: The system comprises a liquefaction tank (1), a condensation tank (2) and a fan (3); The fan (3) draws hot air containing water vapor from the tobacco leaf curing room. The fan (3) is connected to a first pipe (4), and the first pipe (4) extends into the bottom of the coolant in the liquefied tank (1). The liquefaction tank (1) is also provided with a second pipe (5) connected to the condensation tank (2); the air coming out of the liquefaction tank (1) passes through the second pipe (5) into the condensation tank (2) for condensation, and then is discharged from the exhaust pipe (21) on the condensation tank (2); The outside air absorbs heat and is heated through the condensation tank (2) and the liquefaction tank (1) in sequence, and then enters the tobacco leaf curing room.

2. The waste heat recovery and utilization system of the tobacco leaf curing room according to claim 1 is characterized in that: A flexible net (41) is provided at the bottom of the first pipe (4) to break up the air coming out of the first pipe (4) into small bubbles, so that the hot air can fully contact the coolant, so that the water vapor carried in the hot air can be fully liquefied to release latent heat.

3. The waste heat recovery system for tobacco leaf curing room according to claim 1 is characterized in that One end of the second pipe (5) is located at the top of the liquefaction tank (1), and the other end is located at the bottom of the condensation tank (2).

4. The waste heat recovery system for tobacco leaf curing room according to claim 1 is characterized in that The condensing tank (2) is provided with a plurality of heat transfer fins (61), and a plurality of branch pipes (62) arranged in parallel pass through the heat transfer fins (61). One end of the plurality of branch pipes (62) is connected to the outside air, and the other end thereof converges into the third pipe (63).

5. The waste heat recovery and utilization system of the tobacco leaf curing room according to claim 4 is characterized in that: A spiral coil (64) connected to the three pipes (63) is arranged in the liquefaction tank (1); the spiral coil (64) is located below the liquid surface of the coolant and surrounds the outside of the first pipe (4).

6. The waste heat recovery system for tobacco leaf curing room according to claim 4, characterized in that: The bottom of the condensation tank (2) is an inclined surface, tilted toward one side to facilitate the collection of condensed water, and a drainage port (22) is provided at the bottom of the side of the condensation tank (2).

7. The waste heat recovery and utilization system of a tobacco leaf curing room according to claim 5, characterized in that: The tobacco leaf curing room comprises a combustion chamber (7) and a curing chamber (8), and the spiral coil (64) is connected to the combustion chamber (7), that is, the outside air absorbs heat and is heated before being input into the combustion chamber (7).

8. The waste heat recovery system for tobacco leaf curing room according to claim 7, characterized in that: The tobacco leaf curing room is also provided with a heating fan (91) for conveying hot air generated by combustion to the curing chamber (8) via an air guide pipe (92) to provide heat for the curing chamber (8); The temperature of the hot air flow decreases after passing through the tobacco leaves to be cured, and after being mixed with the water vapor overflowing from the tobacco leaves to be cured, it is drawn out by the fan (3).

Images