Multifunctional energy-saving tobacco leaf baking chamber based on clean energy water, hydrogen and hydrogen energy

Abstract

The invention discloses a multifunctional energy-saving tobacco leaf baking oven room based on clean energy, water, hydrogen and hydrogen energy, the baking oven room adopts clean energy, the clean energy in a gas state is fully mixed with combustion-supporting air, then the mixture is combusted in a temperature control cabin, solid particle pollutants are not generated during combustion, and therefore environmental pollution is avoided; furthermore, when moisture removal is needed, to-be-discharged moist air is utilized to preheat external entering air, the discharging temperature of the moist air is reduced, latent heat in the moist air is fully utilized, the heat utilization rate is further increased, when heat is supplied to the curing barn, the temperature in the curing barn is adjusted by arranging heat supply ports at different height positions, and the heat supply efficiency is improved. And the temperature of each part in the curing barn is basically balanced and consistent.

Description

Technical Field

[0001] The invention belongs to the field of tobacco leaf baking, and in particular relates to a multifunctional energy-saving tobacco leaf baking box room based on clean energy water hydrogen energy. Background Art

[0002] The heat source of traditional tobacco drying ovens is biomass briquettes or coal, which are burned to heat the air, and then the heated air is injected into the drying oven. The temperature is controlled by controlling the fuel supply and fan speed. When the humidity in the drying oven reaches the warning value, the fan supply is further increased, the air pressure in the drying oven increases, and the baffle on the dehumidification port is pushed open, so that the humid air at the bottom can be discharged, thereby controlling the humidity in the drying oven.

[0003] Traditional tobacco leaf drying rooms discharge high-temperature humid air in real time, causing a large amount of heat to escape directly into the air, resulting in resource waste and environmental pollution. In addition, it is difficult to accurately control the temperature at different heights in traditional tobacco leaf drying rooms, resulting in different tobacco leaf quality in different areas of the drying room, affecting the economic value of the tobacco leaves.

[0004] Based on this, the inventors have conducted in-depth research on traditional baking ovens in the hope of designing a multifunctional energy-saving tobacco baking oven based on clean energy that can solve the above-mentioned problems. Summary of the invention

[0005] In order to overcome the above problems, the inventors have conducted intensive research and designed a multifunctional energy-saving tobacco baking room based on clean energy, water, hydrogen and hydrogen energy. The baking room adopts clean energy. The clean energy in a gaseous state is fully mixed with the combustion-supporting air and then burned in a temperature-controlled cabin. The combustion will not produce solid particle pollutants, thereby avoiding environmental pollution. Furthermore, when dehumidification is required, the wet air to be discharged is used to preheat the incoming air from the outside, thereby reducing the discharge temperature of the wet air, making full use of the latent heat in the wet air, and further improving the utilization rate of heat. When supplying heat to the baking room, the temperature in the baking room is adjusted by setting heating ports at different heights, so that the temperature at various places in the baking room is basically balanced and consistent, thereby completing the present invention.

[0006] Specifically, the purpose of the present invention is to provide a multifunctional energy-saving tobacco leaf baking oven room based on clean energy water hydrogen energy, the baking oven room comprising a temperature control cabin 1, a baking room 2 and a dehumidification waste heat recovery cabin 3;

[0007] The temperature control chamber 1 is provided with a combustion furnace 11, a heat exchanger 12 and a standby electric heater 13 in order from bottom to top.

[0008] A feeding device 14 is provided outside the temperature control chamber 1. The feeding device 14 is connected to the combustion furnace 11 through a pipeline 15. The feeding device 14 provides the combustion furnace 11 with a uniformly mixed clean energy fuel and an auxiliary gas in real time.

[0009] The gas after combustion in the combustion furnace 11 is discharged to the outside of the temperature control chamber 1 after passing through the heat exchanger 12. The combustion furnace 11 and the heat exchanger 12 heat the gas in the temperature control chamber 1.

[0010] A fan 4 is provided above the temperature control chamber 1, and the heated gas in the temperature control chamber 1 is blown into the baking room 2 through the fan 4;

[0011] Tobacco leaves to be cured are hung in the curing room 2;

[0012] An air outlet channel 21 is provided at the bottom of the curing room 2, and the air outlet channel 21 is connected to both the curing room 2 and the dehumidification waste heat recovery cabin 3;

[0013] The air outlet passage 21 is connected to the baking room 2, so that the hot air in the baking room 2 can be recycled; that is, part of the gas circulates between the baking room 2 and the temperature control cabin 1.

[0014] The outer shell of the dehumidification waste heat recovery cabin 3 is provided with an air inlet connected to the outside and an air outlet 32 ​​connected to the temperature control cabin 1;

[0015] A plurality of heat exchange tubes 8 arranged in parallel are arranged inside the dehumidification waste heat recovery cabin 3, one end of the heat exchange tube is connected to the air outlet channel 21, and the other end is connected to the outside;

[0016] The gas in the baking room 2 enters the heat exchange pipe 8 through the air outlet channel 21 and is then discharged into the outside atmosphere. When passing through the heat exchange pipe, the air entering the temperature control chamber 1 from the outside is preheated in the dehumidification waste heat recovery chamber 3 .

[0017] Wherein, a dehumidification damper door 5 is provided between the air outlet passage 21 and the heat exchange tube 8;

[0018] When the humidity of the gas in the baking room 2 reaches a set value, the dehumidification damper door 5 is controlled to open, so that the gas in the baking room 2 carries moisture and is discharged to the outside atmosphere through the heat exchange pipe 8.

[0019] A mixing chamber 6 is provided above the fan 4, and the gas sucked by the fan 4 first enters the mixing chamber 6, is fully mixed in the mixing chamber 6 to make the temperature uniform, and then enters the baking room 2;

[0020] The gas sucked by the fan 4 includes the air entering the temperature control chamber 1 from the outside through the dehumidification waste heat recovery chamber 3 and the gas circulating in the temperature control chamber 1 and the baking room 2.

[0021] Wherein, a flow control cabin 7 is provided between the mixing cabin 6 and the baking room 2;

[0022] One side of the diversion control cabin 7 is connected to the mixing cabin 6, and the other side is provided with a plurality of heating ports arranged up and down and connected to the baking room 2.

[0023] Each heat supply port is provided with an electric-controlled damper door 71, and the multiple electric-controlled damper doors 71 are independently controlled from each other, and the opening or closing of the heat supply port and the gas flow rate when the heat supply port is opened are controlled by the electric-controlled damper door 71;

[0024] Preferably, the hot air blowing position in the baking room 2 is controlled by the heat supply port and the electrically controlled baffle door 71, so that the temperature at each height position in the baking room 2 is substantially the same.

[0025] The number of the heating ports and the electric-controlled baffle doors 71 is consistent with the number of layers of tobacco leaves in the curing room 2; that is, each layer of tobacco leaves corresponds to a set of heating ports and electric-controlled baffle doors 71;

[0026] Preferably, three or four heating ports are provided on the control cabin 7 .

[0027] The heat exchange tubes 8 in the dehumidification waste heat recovery cabin 3 are arranged in a reciprocating bending manner, so that the heat exchange tubes 8 can fully contact with the air flowing through the dehumidification waste heat recovery cabin 3 and be fully preheated.

[0028] Wherein, fins 81 extending inwards are arranged on the inner wall of the heat exchange tube 8 .

[0029] The inner diameter of the heat exchange tube 8 is 5-8 cm, the height of the fins 81 is 0.8-1.2 cm, 12-16 fins are arranged on each heat exchange tube, and the fins are evenly distributed on the inner wall of the heat exchange tube.

[0030] Wherein, an air intake damper door 31 is provided at the air intake port, and the air intake damper door is opened or closed synchronously with the moisture removal damper door 5;

[0031] Preferably, the fan 4 includes a high speed gear and a low speed gear.

[0032] When the humidity of the gas in the baking room 2 does not reach the set value, the fan 4 starts at a low speed, and the moisture exhaust damper door 5 and the air intake damper door are both in a closed state;

[0033] When the humidity of the gas in the baking room 2 reaches a set value, the fan 4 starts at a high speed, and the moisture exhaust damper door 5 and the air intake damper door are opened synchronously.

[0034] The beneficial effects of the present invention include:

[0035] (1) According to the multifunctional energy-saving tobacco leaf baking oven room based on clean energy water hydrogen energy provided by the present invention, the baking oven room is provided with a dehumidification waste heat recovery cabin, which can use the humid air discharged during dehumidification to preheat the air entering the baking room, thereby reducing the discharge temperature of the dehumidified air and improving the utilization rate of heat;

[0036] (2) According to the multifunctional energy-saving tobacco leaf baking box room based on clean energy water hydrogen energy provided by the present invention, the heat exchange tube of the dehumidification waste heat recovery cabin is provided with fins, which can increase the contact area between moisture and the heat exchange tube, increase the temperature of the heat exchange tube, and improve the heat exchange efficiency. The fin structure can also increase the liquefaction condensation rate of water vapor in the humid air, thereby releasing more latent heat and further improving the utilization rate of heat;

[0037] (3) According to the multifunctional energy-saving tobacco leaf baking room based on clean energy water hydrogen energy provided by the present invention, a plurality of heat supply ports arranged up and down are provided in the baking room, so that the input height of hot air can be controlled, and the temperature of each height layer in the baking room can be regulated, so that the temperature in each place of the baking room is basically the same, thereby ensuring the baking quality and baking efficiency of the tobacco leaves. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 The overall structural diagram of the exterior of the multifunctional energy-saving tobacco leaf drying oven room based on clean energy water hydrogen energy of the present application is shown;

[0039] Figure 2 A schematic diagram showing the structure of the multifunctional energy-saving tobacco leaf drying oven room based on clean energy water hydrogen energy of the present application when the top cover is removed;

[0040] Figure 3 A cross-sectional view of the multifunctional energy-saving tobacco leaf baking oven room based on clean energy water hydrogen energy of the present application when it is cut in the middle along the length direction;

[0041] Figure 4 A cross-sectional view of the multifunctional energy-saving tobacco leaf baking oven room based on clean energy water hydrogen energy in the present application is shown;

[0042] Figure 5 A cross-sectional view of the multifunctional energy-saving tobacco leaf baking oven room based on clean energy water hydrogen energy at the dehumidification waste heat recovery cabin of the present application is shown;

[0043] Figure 6 The present application shows a multifunctional energy-saving tobacco baking box room based on clean energy water hydrogen energy, and a structural schematic diagram of the connection between the heat exchange pipe on the dehumidification waste heat recovery cabin and the outside world.

[0044] Description of Reference Numerals

[0045] 1- Temperature Control Cabin

[0046] 11- Combustion furnace

[0047] 12-Heat exchanger

[0048] 13- Spare electric heater

[0049] 14-Feeding equipment

[0050] 15-Pipeline

[0051] 2- Baking room

[0052] 21- Exhaust channel

[0053] 22-Observation window

[0054] 3- Dehumidification waste heat recovery chamber

[0055] 31-Intake baffle door

[0056] 32-Air outlet

[0057] 4-Blower

[0058] 5-Dehumidification damper door

[0059] 6-Mixed cabin

[0060] 61-Maintenance port

[0061] 7-Diversion control cabin

[0062] 71-Electric control baffle door

[0063] 8-Heat exchange tube

[0064] 81-Fin DETAILED DESCRIPTION

[0065] The present invention will be further described in detail below through the accompanying drawings and embodiments. Through these descriptions, the characteristics and advantages of the present invention will become more clear and distinct.

[0066] 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.

[0067] The present invention provides a multifunctional energy-saving tobacco leaf baking oven room based on clean energy water hydrogen energy, such as Figure 1 As shown in , the baking oven room includes a temperature control cabin 1, a baking room 2 and a dehumidification waste heat recovery cabin 3;

[0068] The temperature control chamber 1 is provided with a combustion furnace 11, a heat exchanger 12 and a standby electric heater 13 in order from bottom to top.

[0069] A feeding device 14 is provided outside the temperature-controlled chamber 1, and the feeding device 14 is connected to the combustion furnace 11 through a pipeline. The feeding device 14 provides the combustion furnace 11 with evenly mixed clean energy fuel and combustion-supporting gas in real time. The clean energy fuel is a gaseous fuel, so as to be fully mixed with the combustion-supporting air. The other fuels can be natural gas, alcohol, hydrogen, etc., or other vaporizable hydrocarbon-based fuels. The feeding device 14 in this application can vaporize the liquid fuel and then mix it with excess combustion-supporting air to ensure that the fuel is fully burned, and the combustion products are carbon dioxide and / or water. Preferably, in this application, the clean energy is water hydrogen energy.

[0070] The combustion furnace 11 is cylindrical and hollow inside to provide space for fuel combustion; wherein, the combustion furnace 11 has a certain height to provide sufficient space for the combustion of gas fuel, ensuring that the fuel can be fully burned when it flows upward to the top opening of the combustion furnace 11, and the burned gas continues to enter the heat exchanger 12 upward, and is fully discharged to the outside of the temperature control chamber 1 after being fully surrounded.

[0071] The heat exchanger 12 includes a plurality of metal plates with fins, which are arranged in parallel above the combustion furnace, and a plurality of metal pipes are provided therein for the exhaust gas generated by the combustion furnace 11 to flow through, thereby fully heating the heat exchanger 12, so that the heat exchanger 12 is rapidly heated under the action of the combustion furnace 11, and then the air in the temperature-controlled cabin 1 is fully contacted with the heat exchanger 12 through its large surface area, thereby heating the air in the temperature-controlled cabin 1. In the present application, the combustion furnace 11 and the heat exchanger 12 are used together to heat the gas in the temperature-controlled cabin 1, so that the gas in the temperature-controlled cabin 1 can be heated more quickly, and then carry more heat when entering the mixing cabin.

[0072] The standby electric heater 13 is not started during normal operation, and is started for emergency heating when the feeding equipment 14 fails or fuel is short, to ensure that the temperature in the curing room 2 does not change suddenly due to a failure, and to ensure that the tobacco leaves in the curing room can complete basic curing operations under extreme circumstances, thereby avoiding losses to farmers.

[0073] Preferably, a fan 4 is provided above the temperature control chamber 1, and the heated gas in the temperature control chamber 1 is blown into the baking chamber 2 by the fan 4; in the present application, the heat transfer in the baking chamber is mainly achieved by the flow of hot air, and the fan is the main power for the flow of hot air;

[0074] In the present application, the top main body of the temperature-controlled cabin 1 is a sealed structure, with only a channel opened at the fan, and the fan is located directly above the temperature-controlled cabin 1. Such a structure allows the hot air in the temperature-controlled cabin to flow to the next cabin only through the fan, and as the hot air tends to move upward on its own, it can save resources and reduce energy consumption to the greatest extent.

[0075] Preferably, if Figure 2 As shown in the figure, tobacco leaves to be cured are hung in the curing room 2; a horizontal hanging rod is provided in the curing room 2, which can be used to hang bunches of tobacco leaves for curing. A plurality of sensors are provided on the hanging rod, and the sensors can measure temperature and humidity in real time. The plurality of sensors are connected to the overall control system of the curing room to monitor the temperature and humidity conditions at various places in the curing room in real time, so as to adjust the curing strategy based on the current curing stage and curing status.

[0076] An air outlet channel 21 is provided at the bottom of the curing room 2, and the air outlet channel 21 is connected to both the curing room 2 and the dehumidification waste heat recovery cabin 3; Figure 2 As shown in the figure, the wall surface with the air outlet passage 21 is the inner wall surface of the baking room, and the wall surface opposite thereto is the outer wall surface. The outer wall surface is provided with a door for entering and exiting the baking room, or the outer wall surface as a whole is the door for entering and exiting the baking room. Figure 2 Preferably, a heat-insulating layer is laid on the wall surface of the baking room 2 to reduce radiation heat dissipation and improve the utilization rate of heat energy.

[0077] Preferably, observation windows 22 are provided on the inner wall surface on both sides of the temperature control chamber, and the observation windows 22 are glass windows, through which the current state of the tobacco leaves in the curing room, such as the degree of curling, color, etc., can be observed from the outside, so as to adjust the baking parameters accordingly.

[0078] Preferably, if Figure 2 and Figure 3 As shown in the figure, the hot air in the baking room 2 is circulated and utilized through the air outlet channel 21 connected with the baking room 2; that is, part of the gas circulates between the baking room 2 and the temperature control cabin 1. Specifically, the air outlet channel 21 is arranged at the bottom of the temperature control cabin 1, and the top of the air outlet channel 21 is opened to connect the air outlet channel 21 with the temperature control cabin 1, so that the gas in the baking room 2 can continuously enter the temperature control cabin 1 through the air outlet channel 21, and then flow back to the baking room 2 with more heat after being heated by the temperature control cabin 1.

[0079] In a preferred embodiment, Figure 1 , Figure 3 and Figure 5 As shown in the figure, an air inlet connected to the outside and an air outlet 32 ​​connected to the temperature control cabin 1 are provided on the outer shell of the dehumidification waste heat recovery cabin 3; wherein, the air outlet 32 ​​is connected to a higher position on the temperature control cabin 1, located above the heat exchanger 13, close to the fan 4, such an arrangement allows the suction force of the fan 4 to act more directly on the dehumidification waste heat recovery cabin 3, thereby more conveniently absorbing outside air.

[0080] A plurality of heat exchange tubes 8 arranged in parallel are arranged inside the dehumidification waste heat recovery cabin 3, one end of the heat exchange tube is connected to the air outlet channel 21, and the other end is connected to the outside; preferably, a water storage tank is provided at the bottom of the inner part of the air outlet channel 21 to receive the condensed water dripping from the heat exchange tube.

[0081] The gas in the baking room 2 enters the heat exchange tube 8 through the air outlet channel 21 and is then discharged into the outside atmosphere. When passing through the heat exchange tube, the air from the outside entering the temperature control chamber 1 is preheated in the dehumidification waste heat recovery chamber 3. That is, when the outside air enters the dehumidification waste heat recovery chamber 3, it fully contacts the heat exchange tube 8 when it flows upward and prepares to enter the temperature control chamber 1 through the air outlet 32, so that the temperature is increased, achieving the effect of preheating, and realizing the recovery and utilization of the heat in the wet air to be discharged.

[0082] In a preferred embodiment, a dehumidification damper door 5 is provided between the gas outlet channel 21 and the heat exchange tube 8; when the dehumidification damper door is closed, the communication between the gas outlet channel 21 and the heat exchange tube 8 is cut off, and gas cannot enter or exit;

[0083] When the humidity of the gas in the baking room 2 reaches a set value, the dehumidification damper door 5 is controlled to open, so that the gas in the baking room 2 carries moisture and is discharged to the outside atmosphere through the heat exchange pipe 8.

[0084] In a preferred embodiment, Figure 4 As shown in FIG. 1 , a mixing chamber 6 is provided above the fan 4, and the gas sucked by the fan 4 first enters the mixing chamber 6, is fully mixed in the mixing chamber 6 to make the temperature uniform, and then enters the baking room 2;

[0085] The gas sucked by the fan 4 includes the air entering the temperature control chamber 1 from the outside through the dehumidification waste heat recovery chamber 3 and the gas circulating in the temperature control chamber 1 and the baking room 2. Among them, since the air outlet 32 ​​is close to the fan, the air entering the temperature control chamber 1 from the outside stays in the temperature control chamber 1 for a short time and cannot be fully mixed and heated, resulting in uneven gas temperature when passing through the fan, which is not suitable for directly entering the baking room 2 to perform heating work; based on this, the mixing chamber 6 is set in the present application, which can extend the flow path of the gas, so that it has more time and space for mixing and heat exchange, and can also change the flow direction to promote the relative flow collision between gases from various sources to achieve the purpose of fully balancing the temperature.

[0086] Preferably, an inspection port 61 is also provided on the mixing chamber 6, so that maintenance personnel can enter the mixing chamber 6 to inspect and maintain components such as the motor.

[0087] In a preferred embodiment, Figure 2 and Figure 3As shown in FIG. 1 , a flow control cabin 7 is provided between the mixing cabin 6 and the baking room 2;

[0088] One side of the diversion control cabin 7 is connected to the mixing cabin 6, and the other side is provided with a plurality of heating ports arranged up and down and connected to the baking room 2.

[0089] Each heat supply port is provided with an electric-controlled damper door 71, and the multiple electric-controlled damper doors 71 are independently controlled from each other, and the opening or closing of the heat supply port and the gas flow rate when the heat supply port is opened are controlled by the electric-controlled damper door 71;

[0090] Preferably, the hot air blowing position in the baking room 2 is controlled by the heat supply port and the electrically controlled baffle door 71, so that the temperature at each height position in the baking room 2 is substantially the same.

[0091] In the present application, during the actual baking process, at least one of the multiple electrically controlled baffle doors 71 is ensured to be in an open state to ensure that the airflow can maintain circulation and avoid local high temperature.

[0092] Preferably, the number of the heating ports and the electric-controlled baffle doors 71 is consistent with the number of layers of tobacco leaves in the curing room 2; that is, each layer of tobacco leaves corresponds to a set of heating ports and electric-controlled baffle doors 71;

[0093] Preferably, three or four heating ports are provided on the control cabin 7 .

[0094] Preferably, an air intake baffle door is provided at the air inlet, and the air intake baffle door is opened or closed synchronously with the dehumidification baffle door 5; that is, dehumidification and air intake are carried out synchronously. When dehumidification is not needed, the baking oven only introduces fuel and combustion-supporting air from the outside, and the main gas in the baking oven realizes autonomous circulation, reducing overflow gas and thereby reducing heat loss.

[0095] Preferably, the fan 4 includes a high speed gear and a low speed gear.

[0096] When the humidity of the gas in the baking room 2 does not reach the set value, the fan 4 starts at a low speed, and the moisture exhaust damper door 5 and the air intake damper door are both in a closed state;

[0097] When the humidity of the gas in the baking room 2 reaches a set value, the fan 4 starts at a high speed, and the moisture exhaust damper door 5 and the air intake damper door are opened synchronously.

[0098] In a preferred embodiment, Figure 3 and Figure 5 As shown in the figure, the heat exchange tubes 8 in the dehumidification waste heat recovery cabin 3 are arranged in a reciprocating bending manner so that the heat exchange tubes 8 can fully contact with the air flowing through the dehumidification waste heat recovery cabin 3 and be fully preheated.

[0099] Preferably, if Figure 6As shown in FIG, the inner wall of the heat exchange tube 8 is provided with fins extending inwardly.

[0100] The inner diameter of the heat exchange tube 8 is 5-8 cm, preferably 6 cm, the height of the fin is 0.8-1.2 cm, preferably 0.9 cm, 12-16 fins are arranged on each heat exchange tube, preferably 14 fins, and the fins are evenly distributed on the inner wall of the heat exchange tube.

[0101] The inventors have found that when the baking oven is in the same dehumidification stage, when the heat exchange tube and its fins are set to the above-mentioned dimensions, the outlet air temperature at the heat exchange tube outlet is the lowest; that is, if only the number and size of the fins are changed, the outlet air temperature at the heat exchange tube outlet will increase, resulting in a decrease in the thermal energy utilization efficiency.

[0102] In a further preferred embodiment, the exhaust gas discharged from the combustion furnace is fully utilized, for example, the exhaust gas is used to preheat the combustion-supporting gas, or the exhaust gas is used to preheat the combustible gas, so as to further improve the utilization rate of heat.

[0103] More preferably, before the exhaust gas is discharged, the exhaust gas can be filtered through a gas filter membrane to intercept the carbon dioxide in the exhaust gas and discharge the carbon dioxide into the baking room. In another embodiment, in order to control the amount of carbon dioxide introduced, a carbon dioxide generating device can be added to the temperature control chamber 1 to quantitatively generate carbon dioxide and introduce it into the baking room.

[0104] Example

[0105] Choose Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 The multifunctional energy-saving tobacco leaf drying box room based on clean energy shown in the figure is used to dry fresh tobacco leaves, which are upper tobacco leaves. Four layers of hanging rods are arranged in the drying box room, with a total of 489 tobacco rods, and an average of 12 kilograms of fresh tobacco leaves per rod.

[0106] During the baking process, the state of tobacco leaves in the baking room is observed in real time through the observation window, the temperature and humidity in the baking room are adjusted, and the temperature of each height layer in the baking room is controlled through the three electrically controlled baffle doors 71 to ensure that the temperature of each height layer is basically consistent;

[0107] The baking process lasted for 180 hours. When the temperature in the baking room cooled down to close to the outdoor temperature, the baking room was opened, and the dried tobacco leaves were checked and weighed. The average weight of the dried tobacco leaves on each tobacco rod was 1.25 kg.

[0108] During the entire baking process, 0.426 tons of fuel were consumed at a price of 2,500 yuan / ton, and 450 kWh of electricity was consumed at a price of 0.452 yuan / kWh; the total cost was 1,268.4 yuan; the cost of baking dry tobacco leaves was 2.08 yuan / kg.

[0109] Comparative Example

[0110] Select fresh tobacco leaves of the same quality as in the implementation, and also select upper tobacco leaves. Arrange 4 layers of hanging rods in the flue-curing room, hang 4 layers of tobacco leaves in total, load 456 tobacco rods, and average 11 kg of fresh tobacco leaves per rod. Use biomass briquettes as fuel, and continue to bake for 187 hours. When the temperature in the flue-curing room cools down to close to the outdoor temperature, open the flue-curing room, check and weigh the dried tobacco leaves, and the average weight of the dried tobacco leaves on each loaded tobacco rod is 1.1 kg.

[0111] During the entire baking process, 1.4 tons of fuel were consumed at a price of 850 yuan / ton, and 478 kWh of electricity was consumed at a price of 0.452 yuan / kWh; the total cost was 1,406.1 yuan; the cost of baking dry tobacco leaves was 2.80 yuan / kg.

[0112] It can be seen from the above embodiments and comparative examples that the multifunctional energy-saving tobacco leaf drying oven room based on clean energy provided by the present application has the following significant advantages:

[0113] 1. It can save energy consumption and reduce baking costs;

[0114] 2. It can improve baking efficiency and shorten baking time.

[0115] 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 multifunctional energy-saving tobacco leaf baking oven based on clean energy water hydrogen energy, characterized in that: The baking oven room comprises a temperature control cabin (1), a baking room (2) and a dehumidification waste heat recovery cabin (3); Wherein, a combustion furnace (11), a heat exchanger (12) and a standby electric heater (13) are arranged in order from bottom to top in the temperature-controlled chamber (1). A feeding device (14) is arranged outside the temperature-controlled chamber (1), and the feeding device (14) is connected to the combustion furnace (11) through a pipeline (15). The feeding device (14) provides the combustion furnace (11) with evenly mixed clean energy fuel and combustion-supporting gas in real time. The gas after combustion in the combustion furnace (11) passes through the heat exchanger (12) and is discharged to the outside of the temperature control chamber (1). The combustion furnace (11) and the heat exchanger (12) heat the gas in the temperature control chamber (1); A fan (4) is arranged above the temperature-controlled chamber (1), and the heated gas in the temperature-controlled chamber (1) is blown into the baking room (2) through the fan (4); Tobacco leaves to be cured are hung in the curing room (2); An air outlet channel (21) is provided at the bottom of the baking room (2), and the air outlet channel (21) is connected to both the baking room (2) and the dehumidification waste heat recovery cabin (3); The air outlet passage (21) is connected to the baking room (2), so that the hot air in the baking room (2) can be recycled; that is, part of the gas circulates between the baking room (2) and the temperature control chamber (1).

2. The multifunctional energy-saving tobacco leaf baking oven room based on clean energy water hydrogen energy according to claim 1 is characterized in that: An air inlet connected to the outside and an air outlet (32) connected to the temperature control chamber (1) are provided on the outer shell of the dehumidification waste heat recovery chamber (3); A plurality of heat exchange tubes (8) arranged in parallel are arranged inside the dehumidification waste heat recovery chamber (3), one end of the heat exchange tube is connected to the air outlet channel (21), and the other end is connected to the outside; The gas in the baking room (2) enters the heat exchange tube (8) through the air outlet channel (21) and is then discharged into the outside atmosphere. When passing through the heat exchange tube, the air entering the temperature control chamber (1) from the outside is preheated in the dehumidification waste heat recovery chamber (3).

3. The multifunctional energy-saving tobacco leaf baking oven room based on clean energy water hydrogen energy according to claim 2 is characterized in that: A moisture removal baffle door (5) is provided between the air outlet channel (21) and the heat exchange tube (8); When the humidity of the gas in the baking room (2) reaches a set value, the dehumidification damper door (5) is controlled to open, so that the gas in the baking room (2) carries moisture and is discharged to the outside atmosphere through the heat exchange pipe (8).

4. The multifunctional energy-saving tobacco leaf baking oven room based on clean energy water hydrogen energy according to claim 2 is characterized in that: A mixing chamber (6) is provided above the fan (4), and the gas sucked by the fan (4) first enters the mixing chamber (6), is fully mixed in the mixing chamber (6), and then enters the baking room (2) after the temperature is uniformed; The gas sucked in by the fan (4) includes air entering the temperature control chamber (1) from the outside through the dehumidification waste heat recovery chamber (3) and gas circulating in the temperature control chamber (1) and the baking room (2).

5. The multifunctional energy-saving tobacco leaf baking oven room based on clean energy water hydrogen energy according to claim 4 is characterized in that: A flow control cabin (7) is provided between the mixing cabin (6) and the baking room (2); One side of the flow control cabin (7) is connected to the mixing cabin (6), and the other side is provided with a plurality of heating ports arranged up and down and connected to the baking room (2). Each heat supply port is provided with an electric-controlled baffle door (71), and the plurality of electric-controlled baffle doors (71) are controlled independently of one another, and the opening or closing of the heat supply port, as well as the gas flow rate when the heat supply port is opened, are controlled by the electric-controlled baffle doors (71); Preferably, the position of hot air blowing into the baking room (2) is controlled by the heat supply port and the electrically controlled baffle door (71), so that the temperature at each height position in the baking room (2) is substantially the same.

6. The multifunctional energy-saving tobacco leaf baking oven room based on clean energy water hydrogen energy according to claim 5 is characterized in that: The number of the heating ports and the electrically controlled baffle doors (71) is consistent with the number of layers of tobacco leaves in the curing room (2); that is, each layer of tobacco leaves corresponds to a group of heating ports and electrically controlled baffle doors (71); Preferably, three or four heating ports are provided on the control cabin (7).

7. The multifunctional energy-saving tobacco leaf baking oven room based on clean energy water hydrogen energy according to claim 2 is characterized in that: The heat exchange tubes (8) in the dehumidification waste heat recovery chamber (3) are arranged in a reciprocating bending manner so as to facilitate the heat exchange tubes (8) to fully contact and fully preheat the air flowing through the dehumidification waste heat recovery chamber (3).

8. The multifunctional energy-saving tobacco leaf baking oven room based on clean energy water hydrogen energy according to claim 2 is characterized in that: Fins (81) extending inwards are arranged on the inner wall of the heat exchange tube (8).

9. The multifunctional energy-saving tobacco leaf baking oven room based on clean energy water hydrogen energy according to claim 8 is characterized in that: The inner diameter of the heat exchange tube (8) is 5-8 cm, the height of the fin (81) is 0.8-1.2 cm, 12-16 fins are arranged on each heat exchange tube, and the fins are evenly distributed on the inner wall of the heat exchange tube.

10. The multifunctional energy-saving tobacco leaf baking oven room based on clean energy water hydrogen energy according to claim 3 is characterized in that: An air intake damper door (31) is provided at the air intake port, and the air intake damper door opens or closes synchronously with the moisture removal damper door (5); Preferably, the fan (4) comprises a high speed gear and a low speed gear. When the humidity of the gas in the baking room (2) does not reach the set value, the fan (4) starts at a low gear speed, and the moisture exhaust damper door (5) and the air intake damper door are both in a closed state; When the humidity of the gas in the baking room (2) reaches a set value, the fan (4) starts at a high speed and simultaneously opens the moisture exhaust damper door (5) and the air intake damper door.

Images