CN202680445U - Energy-saving tobacco flue-curing house capable of effectively recovering, returning and utilizing moisture exhaust heat - Google Patents

Abstract

The utility model discloses an energy-saving flue-cured tobacco room capable of effectively recovering moisture-discharging heat energy and returning it for utilization. , Furnace mouth, ash outlet and blast outlet are set at the front of the heating furnace chamber, and the blast outlet is connected to the blower. The dehumidification passage is arranged on both sides of the bottom of the heating furnace chamber, the cold air inlet is arranged above the dehumidification passage, and the circulation fan is installed at the front of the circulation air chamber for maintenance. A channel; a high-efficiency heat exchange device is installed in the dehumidification channel, and the dehumidification tube side of the heat exchange device is connected to the waste heat utilization device; the dry gas tube side of the heat exchange device is connected to the dry gas inlet. The utility model directly arranges the high-efficiency heat exchange device in the dehumidification passage, exchanges heat between the high-temperature moisture discharged from the flue-cured tobacco outdoors and fresh air at normal temperature, and can fully recover the heat in the moisture discharge and directly serve as an auxiliary heat source for the flue-cured tobacco room. The temperature of the intake air entering the heating chamber can be increased by more than 10°C.

Description

An energy-saving tobacco flue-cured room that can effectively recover and recycle the heat energy of dehumidification

technical field

The utility model belongs to the technical field of tobacco leaf curing and energy saving, in particular to an energy-saving tobacco flue-curing room which can effectively recycle the moisture-expelling heat energy of the tobacco-leaf curing room and realize the purpose of saving energy and reducing consumption.

Background technique

Tobacco leaf curing process requires timely dehumidification of the barn. The humidity in the unit barn in the prior art is directly discharged into the atmosphere through the dehumidification channel. The temperature of the hot and humid air is mostly above 40°C, even as high as 70°C, and is directly discharged into the atmosphere. It not only pollutes the environment, but also causes a waste of energy. The inventor of the present invention has developed a unit barn that can recycle and utilize the heat energy of dehumidification, but since the heat exchange equipment is external, the efficiency of heat energy recovery is low. Moreover, the fresh air after heat exchange needs a long pipeline to be input into the air inlet, which will cause the loss of recovered heat energy. To this end, the development of a flue-curing room that can efficiently recycle and utilize the heat energy of dehumidification and use it to supplement the heat energy of the flue-curing room and reduce fuel consumption will help to improve the overall energy efficiency of the curing room and achieve the purpose of energy saving and emission reduction.

Utility model content

The purpose of the utility model is to provide an energy-saving flue-cured tobacco room with a simple structure, which can directly recycle and utilize the heat energy of dehumidification and effectively reduce energy consumption.

The purpose of this utility model is achieved in this way, comprising a heating chamber, a flue-cured tobacco chamber, the heating chamber is connected to the chimney, the lower part of the heating chamber is provided with a heating furnace chamber, the upper part is provided with a circulating air chamber, and the front part of the heating furnace chamber is provided with a furnace mouth and an ash outlet. The air outlet is connected to the blower, and the dehumidification channel is set on both sides of the bottom of the heating furnace chamber, the cold air inlet is set above the dehumidification channel, and the circulation fan maintenance channel is set in the front of the circulating air chamber; The heat exchange device, the dehumidification tube of the heat exchange device is connected to the waste heat utilization device; the dry gas tube of the heat exchange device is connected to the dry gas inlet.

The utility model directly arranges the high-efficiency heat exchange device in the dehumidification channel, exchanges heat between the high-temperature moisture discharged from the flue-cured tobacco outdoors and fresh air at normal temperature, and can fully recover the heat in the dehumidified gas and directly use it as an auxiliary heat source for the flue-cured tobacco room. It can increase the temperature of the intake air entering the heating chamber by more than 10°C, which not only improves the heat exchange efficiency, but also can effectively reduce the coal consumption of the barn, and at the same time can significantly reduce the temperature of the hot and humid gas discharged outside, reduce environmental pollution, save energy and reduce emissions , and achieved a win-win effect of ecological and economic benefits.

Description of drawings

Fig. 1 is the three-dimensional schematic view of the prior art barn structure;

Fig. 2 is the schematic diagram of the first embodiment of the utility model;

Fig. 3 is the schematic diagram of the second embodiment of the utility model;

Fig. 4 is a half-section schematic diagram of the overall structure of the heat exchange device of the present invention;

Fig. 5 is a top half-sectional schematic diagram of Fig. 4;

In the figure: 1-heating room, 2-tobacco flue-cured room, 3-humidity exhaust channel, 4-furnace mouth, 5-circulation fan maintenance channel, 6-side ash cleaning port, 7-control device, 8-chimney, 9-blower , 10-Dry gas inlet, 11-Heat exchange device, 111-Shell, 112-Exchange air inlet, 113-Exchange air outlet, 114-Wet gas inlet, 115-Heat exchange plate, 116-Exchange air inlet , 117-exchange air outlet duct, 12-interface device.

Detailed ways

The utility model will be further described below in conjunction with the accompanying drawings, but the utility model is not limited in any way. Any changes or improvements made based on the teaching of the utility model all belong to the protection scope of the utility model.

Figure 1 shows the structure of the barn in the prior art. The heat exchange device is external, and the heat energy of the hot and humid gas cannot be fully recycled. Generally, the temperature of the dry gas can only be increased by about 5°C, and the dry gas for heat exchange is transported through a long pipeline. , large heat loss.

Fig. 2 and Fig. 3 show the overall structure of the utility model, which is the airflow descending working mode.

The utility model comprises a heating chamber 1 and a flue-cured tobacco chamber 2. The heating chamber 1 is connected to a chimney 8. The lower part of the heating chamber 1 is provided with a heating furnace chamber, the upper part is provided with a circulating air chamber, and the front part of the heating furnace chamber is provided with a furnace mouth 4 and an ash outlet. And the blast outlet, the blast outlet is connected to the blower 9, the dehumidification passage 3 is arranged on both sides of the bottom of the heating furnace chamber, the cold air inlet is arranged above the dehumidification passage 3, and the circulation fan maintenance passage 5 is arranged at the front of the circulation air chamber; the dehumidification passage 3 A high-efficiency heat exchange device 11 is installed inside, and the dehumidification pipe side of the heat exchange device 11 is connected to the waste heat utilization device; the dry gas pipe side of the heat exchange device 11 is connected to the dry gas inlet 10 .

As shown in FIG. 2 and FIG. 3 , one end of the heat exchange device 11 is provided with a dry air inlet 10 , and the other end is provided with a dry hot air duct 12 directly connected to the air inlet of the barn.

As shown in FIG. 4 , the heat exchange device 11 includes a housing 111 and a heat exchange assembly. A heat exchange plate 115 is arranged longitudinally in parallel in the housing 111 . The heat exchange plate 115 is connected on one side and one side in a "S"-shaped heat exchange components, the ends of the heat exchange components are blocked at intervals to form two heat exchange channels, one of which is the wet gas flow arranged along the longitudinal direction of the shell, and the other is the dry gas flow arranged on the side. The plate structure increases the heat exchange area, prolongs the heat exchange time between dry and wet gases, and improves the heat exchange efficiency.

As shown in Figure 5, an exchange gas inlet 112 is provided on one side of the housing 111 to communicate with the dry gas flow of the heat exchange components; at least one side of the housing 111 is provided with an exchange gas outlet 113 to communicate with the heat exchange components Dry gas process.

The distance between the heat exchange plates 115 is 0.5-8 cm.

As shown in Figure 5, an isolation section is set between the exchange gas inlet 112 and the exchange gas outlet 113; isolation board. This setting prolongs the circulation path of the dry gas in the heat exchange component and improves the heat exchange efficiency.

As shown in Fig. 4 and Fig. 5, an interface device 12 is provided on the housing 111, and the interface device 12 is respectively provided with an exchange air inlet 112 and an exchange air outlet 113 with an exchange air inlet 116 and an exchange air outlet. The air outlet channel 117 and the exchange air inlet channel 116 are directly connected to the atmosphere, and the exchange air outlet channel 117 is connected to the air inlet of the barn.

The exchange air inlet duct 116 is provided with a one-way open air inlet shield, which is only opened during air intake to prevent the intrusion of dust or rainwater.

The dry gas air inlet 10 of the heat exchange assembly is provided with an adjustment grid, and the control device 7 adjusts the opening and closing degree of the adjustment grid according to the temperature of the flue-cured tobacco chamber 2, so as to adjust the air intake volume of the heat-exchange gas, and realize the control of the flue-cured tobacco chamber 2. Control of internal temperature and humidity.

The front end of the dehumidification channel 3 is connected to a waste heat recovery device (not shown in the figure), and the dehumidification tail gas that is still higher than the ambient temperature is drawn out as a heat source for reuse to further recover heat energy.

The waste heat recovery device is a hydrothermal heat exchange device.

Accompanying drawing has shown the utility model implements the structure and the disposition relation in the downflow type barn of the present invention. The technical scheme of the utility model can be implemented in the air-flow ascending tobacco flue-curing room, and the purpose of the utility model can also be achieved.

Working principle and working process of the utility model:

The utility model recovers the heat of the high-temperature moisture discharged from the flue-cured tobacco chamber 2 through the efficient heat exchange device 11, uses fresh air as the heat-exchange medium, and returns the dry hot air to the flue-cured tobacco chamber 2 as an auxiliary heat source. The heat exchange device 11 adopts a laminar flow heat exchange component with high heat exchange efficiency. Since the distance between the heat exchange plates 115 is very small, whether it is the hot and humid gas in the wet gas process or the heat exchange air in the dry gas process Room 115 flows almost in a laminar flow mode, and the heat exchange efficiency is further improved due to the large total heat exchange area. As it is used in the heat exchange of moisture in the flue-cured room 2, it is directly put into the moisture exhaust channel 3, and the hot and humid gas directly enters the wet gas process of the heat exchange component, and the heat exchange plate 115 of the "S" shape makes it flow through the dry air. The heat exchange gas in the gas flow and the hot and humid gas form a nested structure for heat exchange, which greatly improves the heat exchange efficiency. The heat energy of the hot and humid gas is efficiently exchanged to the heat exchange gas, effectively increasing the temperature of the heat exchange air above 10°C. The temperature of the air entering the flue-cured chamber 2 is increased, the coal consumption of the heating furnace is directly reduced, the external discharge of high-temperature moisture is reduced, and the dual purpose of energy saving and emission reduction is realized.

The following table is a comparative table of energy-saving effects of implementing the utility model:

project parameter Raise the dry hot air temperature 8~10℃ CO emission reduction rate 20% Emission reduction of other pollutants 20% Reduce coal consumption 10-15% reduce dehumidification temperature 10°C payback period <3 years

Claims (10)

1. one kind can effectively be reclaimed hydrofuge heat energy and feed back the energy saving flue-cured tobacco-room that utilizes, comprise heating clamber (1), flue-cured tobacco chamber (2), heating clamber (1) is communicated with chimney (8), described heating clamber (1) bottom arranges heated oven chamber, top arranges the circulation air compartment, the heated oven chamber front portion arranges fire door (4), ash hole and blast orifice, blast orifice connects air blast (9), heated oven chamber's two bottom sides arranges hydrofuge passage (3), hydrofuge passage (3) top arranges the cold wind import, circulation air compartment front portion arranges circulating fan maintenance channel (5), it is characterized in that: efficient heat-exchanger rig (11) is set in the described hydrofuge passage (3), and the hydrofuge tube side of described heat-exchanger rig (11) is communicated with residual heat using device; The dry gas tube side of described heat-exchanger rig (11) is communicated with dry gas air inlet (10).

2. the hydrofuge heat energy that can effectively reclaim according to claim 1 also feeds back the energy saving flue-cured tobacco-room that utilizes, it is characterized in that: described heat-exchanger rig (11) one ends arrange dry gas air inlet (10), and the other end arranges interface arrangement (12) and directly is communicated with the barn air inlet.

3. the hydrofuge heat energy that can effectively reclaim according to claim 1 and 2 also feeds back the energy saving flue-cured tobacco-room that utilizes, it is characterized in that: described heat-exchanger rig (11) comprises housing (111) and heat-exchanging component, the interior parallel longitudinal of described housing (111) arranges heat exchanger plates (115), the one-sided monolateral connection of described heat exchanger plates (115) is the serpentine heat-exchanging component, the shutoff of heat-exchanging component end part interval forms two heat exchanger channels, one of them is the moisture flow process that vertically arranges along housing, the dry gas flow process that another arranges for the side.

4. the hydrofuge heat energy that can effectively reclaim according to claim 3 also feeds back the energy saving flue-cured tobacco-room that utilizes, and it is characterized in that: described housing (111) one sides arrange exchange gas import (112), are communicated with the dry gas flow process of heat-exchanging component; The upper at least one side of described housing (111) arranges exchange gas outlet (113), is communicated with the dry gas flow process of heat-exchanging component; The spacing of described heat exchanger plates (115) is 0.5 ~ 8cm.

5. the energy saving flue-cured tobacco-room that can effectively reclaim hydrofuge heat energy and feed back utilization according to claim 4 is characterized in that: between described exchange gas import (112) and the exchange gas outlet (113) distance piece is set; The top of the dry gas flow process passage of the heat-exchanging component between described exchange gas import (112) and the exchange gas outlet (113) arranges division board.

6. the hydrofuge heat energy that can effectively reclaim according to claim 4 also feeds back the energy saving flue-cured tobacco-room that utilizes, it is characterized in that: interface arrangement (12) is set on the described housing (111), described interface arrangement (12) arranges respectively exchange gas air inlet duct (116) and exchange gas exhaust passage (117) corresponding to exchange gas import (112) and exchange gas outlet (113), exchange gas air inlet duct (116) directly is communicated with atmosphere, and exchange gas exhaust passage (117) is communicated with the air inlet of barn.

7. the hydrofuge heat energy that can effectively reclaim according to claim 6 also feeds back the energy saving flue-cured tobacco-room that utilizes, and it is characterized in that: described exchange gas air inlet duct (116) mouth arranges the air intake protective cover of unidirectional unlatching.

8. the hydrofuge heat energy that can effectively reclaim according to claim 3 also feeds back the energy saving flue-cured tobacco-room that utilizes, and it is characterized in that: the dry gas air inlet (10) of described heat-exchanging component arranges the adjusting grid.

9. the energy saving flue-cured tobacco-room that can effectively reclaim hydrofuge heat energy and feed back utilization according to claim 1 is characterized in that: described hydrofuge passage (3) front end connection waste-heat recovery device.

10. the hydrofuge heat energy that can effectively reclaim according to claim 9 also feeds back the energy saving flue-cured tobacco-room that utilizes, and it is characterized in that: described waste-heat recovery device is the water heat type heat-exchanger rig.

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