CN114698866A - Gas atmosphere adjustable methanol fuel tobacco flue-curing house heating system - Google Patents
Gas atmosphere adjustable methanol fuel tobacco flue-curing house heating system Download PDFInfo
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- CN114698866A CN114698866A CN202210521187.4A CN202210521187A CN114698866A CN 114698866 A CN114698866 A CN 114698866A CN 202210521187 A CN202210521187 A CN 202210521187A CN 114698866 A CN114698866 A CN 114698866A
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- curing house
- heat supply
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- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 title claims abstract description 177
- 241000208125 Nicotiana Species 0.000 title claims abstract description 100
- 235000002637 Nicotiana tabacum Nutrition 0.000 title claims abstract description 100
- 238000010438 heat treatment Methods 0.000 title claims abstract description 56
- 239000000446 fuel Substances 0.000 title claims abstract description 22
- 239000007789 gas Substances 0.000 claims abstract description 46
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims abstract description 42
- 229910002092 carbon dioxide Inorganic materials 0.000 claims abstract description 21
- 239000001569 carbon dioxide Substances 0.000 claims abstract description 21
- 238000002485 combustion reaction Methods 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 13
- 238000011084 recovery Methods 0.000 claims description 10
- 230000001105 regulatory effect Effects 0.000 claims description 9
- 239000002918 waste heat Substances 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 6
- 238000005192 partition Methods 0.000 claims description 6
- 239000004033 plastic Substances 0.000 claims description 5
- 229920003023 plastic Polymers 0.000 claims description 5
- 238000009423 ventilation Methods 0.000 claims description 5
- 230000001276 controlling effect Effects 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 230000004044 response Effects 0.000 abstract description 2
- 231100000331 toxic Toxicity 0.000 abstract description 2
- 230000002588 toxic effect Effects 0.000 abstract description 2
- 230000006872 improvement Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000003245 coal Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
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- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/10—Roasting or cooling tobacco
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/02—Heating arrangements using combustion heating
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacture Of Tobacco Products (AREA)
Abstract
The invention discloses a heating system of a methanol fuel tobacco flue-curing house with adjustable gas atmosphere, and relates to the technical field of methanol heating. The device comprises a tobacco curing barn and a heat supply chamber, wherein the heat supply chamber is fixed at one end of the tobacco curing barn, and a combustion hearth is fixed inside the heat supply chamber. According to the invention, methanol is adopted, and the products after complete combustion are water vapor and carbon dioxide, so that compared with the traditional coal-fired curing barn, the methanol combustor has the advantages of fast response, small thermal inertia and high temperature control precision, can effectively improve the quality and stability of flue-cured tobacco, and can reduce the emission of toxic and harmful gases; the amount of carbon dioxide and water vapor entering the interior of the tobacco flue-curing house is adjusted by the atmosphere adjuster, so that the gas atmosphere in the interior of the tobacco flue-curing house is always kept in the optimal curing process, and the tobacco curing quality can be obviously improved; by additionally arranging the atmosphere regulator, the direct heating mode, the heat exchange mode and the direct heating/heat exchange mode heat supply can be realized, and the fuel utilization efficiency is greatly improved.
Description
Technical Field
The invention relates to the technical field of methanol heat supply, in particular to a methanol fuel tobacco flue-curing house heat supply system with adjustable gas atmosphere.
Background
Tobacco leaf baking is the most energy-consuming link in flue-cured tobacco production, currently, tobacco leaves in China are generally baked by using fire coal, about 300 plus 400 ten thousand tons of fire coal are consumed each year, and simultaneously, a large amount of carbon dioxide, smoke dust and toxic gas are generated. With the continuous improvement of the environmental protection requirement, the environmental pollution problem caused by fire coal flue-cured tobacco is increasingly prominent, and the trend that the bulk curing barn gradually turns to the use of clean energy from the fire coal is inevitable.
Methanol is taken as clean energy, products after complete combustion of the methanol are carbon dioxide and water vapor, and the methanol is safe and environment-friendly, so the methanol is gradually paid attention to the field of tobacco leaf baking.
However, most of the existing methanol fuel tobacco curing houses adopt a heat exchange mode for heat supply, so that a large amount of heat is discharged along with smoke through a chimney, and the curing cost is greatly increased. Inside methanol direct heating formula roast room through discharging into the roast room with all gas after the burning, heat utilization efficiency obtains promoting by a wide margin, and the carbon dioxide of certain concentration has the promotion effect to tobacco leaf toasting simultaneously, and nevertheless gas moisture content is high after the methanol burning, easily causes the roast room to dehumidify the difficulty, increases the proportion of defective cigarette.
Disclosure of Invention
The invention aims to provide a heating system of a methanol fuel tobacco curing house with adjustable gas atmosphere, which is used for improving the utilization efficiency of methanol fuel, adjusting carbon dioxide and water vapor entering the interior of the tobacco curing house according to the optimal tobacco curing process requirement and improving the economic curing character of the methanol fuel tobacco curing house.
In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a gas atmosphere adjustable methanol fuel tobacco flue-curing house heating system, includes: the tobacco curing room is provided with a heat supply chamber and is fixed at one end of the tobacco curing room, a combustion hearth is fixed inside the heat supply chamber, and the upper end of the combustion hearth is connected with a finned tube type heat exchanger;
the surface of the heating chamber is provided with a bolt connected with a methanol burner, and the methanol burner is used for heating the heating chamber;
the upper end and the lower end of the interior of the heat supply chamber, which are close to the tobacco flue-curing house, are respectively provided with a hot air return inlet and a hot air inlet;
one end of the finned tube heat exchanger is connected with an atmosphere regulator, and the atmosphere regulator is used for regulating the content of water vapor and carbon dioxide;
and the circulating fan is positioned in the heat supply chamber and is positioned at the upper end of the finned tube heat exchanger.
Preferably, the spray pipe of the methanol burner penetrates through the heat supply chamber and is positioned on the inner side of the combustion hearth.
Preferably, the atmosphere regulator comprises a direct heating pipeline and a first electric control butterfly valve, one end of the direct heating pipeline is connected with the ribbed tube type heat exchanger through a flange, the other end of the direct heating pipeline is in through connection with the heat supply chamber, the first electric control butterfly valve is arranged on the surface of the direct heating pipeline, a heat exchange pipeline is fixed on the surface of the direct heating pipeline and on one side, away from the heat supply chamber, of the first electric control butterfly valve, a third electric control butterfly valve is arranged on the surface of the heat exchange pipeline, a discharge pipeline is fixed on the surface of the direct heating pipeline and on one side, close to the heat supply chamber, of the first electric control butterfly valve, and a second electric control butterfly valve is arranged on the surface of the discharge pipeline;
and one end of the cross counter-flow heat exchanger is connected with the discharge pipeline through a housing, and one side of the cross counter-flow heat exchanger is connected with the heat exchange pipeline through the housing.
Preferably, the outer surface of the straight heat pipe and the outer surface of the heat exchange pipe are both provided with temperature compensation type flow sensors for measuring the gas flow.
Preferably, the other side of the cross counter-flow heat exchanger is rotatably connected with an atmosphere regulator cold air opening adjusting plate, and one end of the atmosphere regulator cold air opening adjusting plate is fixedly provided with an atmosphere regulator opening adjusting motor.
Preferably, the inner side of the hot air return inlet is provided with a return air baffle, and the return air baffle is used for adjusting the size of the hot air return inlet;
the air return baffle comprises a lifting rod and a square baffle, the square baffle is in sliding connection with the hot air return opening, and the lifting rod penetrates through the upper end of the tobacco flue-curing house and is fixedly connected with the square baffle.
Preferably, a plurality of through holes are uniformly formed in the surface of the lifting rod; and the bolt is used for penetrating through the through hole and limiting the position of the lifting rod.
Preferably, the two sides of the hot air return port are provided with a moisture exhaust port of the tobacco curing barn, and the outer surface above the heat supply chamber is provided with a cold air inlet for adjusting the temperature and the humidity inside the tobacco curing barn;
there is waste heat recovery device, including cold wind air intake housing, with the cold wind air intake connection of heat supply room, the inboard rotation of cold wind air intake housing is connected with rotatory regulating plate, there is plate-fin heat exchanger one side of cold wind air intake housing through the hose connection, the other end of plate-fin heat exchanger passes through the flexible ventilation pipe of plastics and is connected with tobacco flue-curing house hydrofuge mouth.
Preferably, the heat supply chamber and the tobacco curing barn are separated by a partition plate, and the hot air return opening, the moisture discharging opening of the tobacco curing barn and the hot air inlet are all arranged on the partition plate.
Preferably, the valve body further comprises a PLC controller for controlling the opening and closing angles of the first electric control butterfly valve, the second electric control butterfly valve and the third electric control butterfly valve, the PLC controller is electrically connected with the first electric control butterfly valve, the second electric control butterfly valve and the third electric control butterfly valve, and the PLC controller is electrically connected with the temperature compensation type flow sensor.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, methanol is adopted, and the products after complete combustion are water vapor and carbon dioxide, so that compared with the traditional coal-fired flue-curing barn, the methanol combustor has the advantages of fast response, small thermal inertia and high temperature control precision, can effectively improve the quality and stability of flue-cured tobacco, and can reduce the emission of toxic and harmful gases;
2. according to the invention, the amount of carbon dioxide and water vapor entering the tobacco curing barn is adjusted through the atmosphere regulator, so that the gas atmosphere in the tobacco curing barn is always kept in the optimal curing process, and the tobacco curing quality can be obviously improved.
3. According to the invention, the atmosphere regulator is additionally arranged, so that heat supply in a direct heating mode, a heat exchange mode and a direct heating/heat exchange mode can be realized, and the fuel utilization efficiency is greatly improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention patent, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural view of the present invention as a whole;
FIG. 2 is a cut-away view of the present invention in its entirety;
FIG. 3 is a cut-away view of the heat supply chamber of the present invention;
FIG. 4 is a schematic view of a partial structure of the waste heat recovery device of the present invention;
FIG. 5 is a schematic view of a partial structure of an atmosphere controller according to the present invention;
fig. 6 is a partial structural view of the return air baffle of the present invention.
In the figure: 1. a tobacco curing house; 2. a heat supply chamber; 3. a methanol burner; 4. an air return baffle; 5. a waste heat recovery device; 6. an atmosphere regulator; 7. a combustion furnace chamber; 8. a finned tube heat exchanger; 9. a square baffle plate; 10. a lifting bar; 11. a circulating fan; 12. a cold air inlet cover shell; 13. a plate-fin heat exchanger; 14. a plastic telescopic ventilation pipe; 15. rotating the adjusting plate; 16. a housing; 17. an atmosphere regulator cold air opening degree regulating plate; 18. an atmosphere regulator opening degree adjusting motor; 19. a cross-counterflow heat exchanger; 20. a second electrically controlled butterfly valve; 21. a direct heat pipe; 22. a first electrically controlled butterfly valve; 23. a third electrically controlled butterfly valve; 24. a temperature compensated flow sensor; 25. a discharge conduit; 26. a heat exchange conduit; 27. a moisture discharging port of a tobacco curing house.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example one
Referring to fig. 1-6, a heating system of a methanol-fueled tobacco flue-curing house with adjustable gas atmosphere comprises: the tobacco curing room 1 is used for curing tobacco leaves, and the tobacco curing room 1 is heated to cure the tobacco leaves on the inner side of the tobacco curing room 1.
And a heat supply chamber 2 fixed at one end of the tobacco flue-curing house 1, wherein the heat supply chamber 2 is separated from the tobacco flue-curing house 1 through a partition plate, a hot air return port, a tobacco flue-curing house moisture exhaust port 27 and a hot air inlet are arranged on the partition plate, and gas and heat return to the heat supply chamber 2 through the heat supply chamber 2, the hot air inlet, the tobacco flue-curing house 1 and the hot air return port to form circulation, so that the temperature inside the tobacco flue-curing house 1 is increased, proper moisture and carbon dioxide are obtained, and the tobacco flue-curing quality is obviously improved.
A combustion hearth 7 is fixed inside the heat supply chamber 2, and the upper end of the combustion hearth 7 is connected with a finned tube type heat exchanger 8;
the surface of heating chamber 2 has bolted connection to have methanol burner 3, and methanol burner 3 is used for heating chamber 2, and the spray tube of methanol burner 3 runs through heating chamber 2 and is located the inboard of burning furnace 7, through opening methanol burner 3 for methanol burns, produces a large amount of vapor, carbon dioxide and heat.
Specifically, a hot air return port and a hot air inlet are respectively arranged at the upper end and the lower end of the interior of the heat supply chamber 2 close to the tobacco flue-curing house 1;
in order to make the circulation more rapid, a circulating fan is arranged inside the heat supply chamber 2 and at the upper end of the finned tube heat exchanger 8;
in this embodiment, adopt methyl alcohol, its complete combustion back product is vapor and carbon dioxide, compares with traditional coal-fired roast room, and methyl alcohol combustor 3 responds soon, thermal inertia is little, and the temperature control precision is high, can effectively improve flue-cured tobacco quality and stability, can reduce poisonous and harmful gas and discharge.
Example two
The embodiment is a modification made on the basis of the first embodiment, and according to the figures 1-6, one end of the finned tube heat exchanger 8 is connected with an atmosphere regulator 6, and the atmosphere regulator 6 is used for regulating the content of water vapor and carbon dioxide;
specifically, the atmosphere regulator 6 comprises a direct heat pipeline 21 and a first electric control butterfly valve 22, one end of the direct heat pipeline 21 is connected with the fin tube type heat exchanger 8 through a flange, one end of the fin tube type heat exchanger 8 is connected with an exhaust pipe, one end of the direct heat pipeline 21 is connected with the exhaust pipe through a flange and further connected with the fin tube type heat exchanger 8, the other end of the direct heat pipeline 21 is connected with the heat supply chamber 2 in a penetrating manner, the connecting position of the other end of the direct heat pipeline 21 is located at the upper end of the circulating fan 11, and the surface of the direct heat pipeline 21 is provided with the first electric control butterfly valve 22;
direct heating mode: in this embodiment, through being provided with atmosphere regulator 6, there is the direct heating mode, at the tobacco leaf baking initial stage, 1 inside carbon dioxide in tobacco flue-curing house and vapor demand are great, open first automatically controlled butterfly valve 22, second automatically controlled butterfly valve 20 and third automatically controlled butterfly valve 23 are all closed, whole gas after the methyl alcohol burning in the methyl alcohol combustor 3 this moment gets into tobacco flue-curing house 1 inside through the direct heating pipeline 21 in atmosphere regulator 6 under the circulating fan 11 effect, heating system in this device is with the work of direct heating mode, make the tobacco leaf can be quick by the stoving.
EXAMPLE III
According to the improvement of the second embodiment, as shown in fig. 5, a heat exchange pipe 26 is fixed on the surface of the straight heat pipe 21 and on the side of the first electric control butterfly valve 22 away from the heat supply chamber 2, a third electric control butterfly valve 23 is arranged on the surface of the heat exchange pipe 26, a discharge pipe 25 is fixed on the surface of the straight heat pipe 21 and on the side of the first electric control butterfly valve 22 close to the heat supply chamber 2, and a second electric control butterfly valve 20 is arranged on the surface of the discharge pipe 25;
there is also a cross-counterflow heat exchanger 19, one end of the cross-counterflow heat exchanger 19 being connected to a discharge conduit 25 via the casing 16, and one side of the cross-counterflow heat exchanger 19 being connected to a heat exchange conduit 26 via the casing 16.
A heat exchange mode: in this embodiment, through being provided with heat transfer pipeline 26 and discharge line 25, there is the heat transfer mode, through closing first automatically controlled butterfly valve 22, third automatically controlled butterfly valve 23 and second automatically controlled butterfly valve 20 are all opened, whole gas that the methyl alcohol burning produced gets into cross counterflow heat exchanger 19 through atmosphere regulator 6, the gas that the methyl alcohol burning produced at this moment is whole to be discharged to the atmosphere, and fresh air gets into inside the roast room after the heating of cross counterflow heat exchanger 19, heating system works with the heat transfer mode, atmosphere regulator 6 at this moment has played waste heat recovery's effect, help reducing the cost of toasting.
Example four
In the present embodiment, an improvement is made on the basis of the third embodiment, and according to fig. 5, the outer surface of the straight heat pipe 21 and the outer surface of the heat exchange pipe 26 are both provided with a temperature compensation type flow sensor 24 for measuring the gas flow;
and a PLC controller for controlling the opening and closing angles of the first electric control butterfly valve 22, the second electric control butterfly valve 20 and the third electric control butterfly valve 23, the PLC controller is electrically connected with the temperature compensation type flow sensor 24, the gas flow in the direct heating pipeline 21 and the heat exchange pipeline 26 is measured through the two temperature compensation type flow sensors 24, the measured data is transmitted to the PLC controller in real time, and after the data is processed, an instruction is sent to the first electric control butterfly valve 22, the second electric control butterfly valve 20 and the third electric control butterfly valve 23 to control the opening and closing angles of the first electric control butterfly valve 22, the second electric control butterfly valve 20 and the third electric control butterfly valve 23.
Direct heat/heat exchange mode: in this embodiment, by providing the temperature compensation type flow sensor 24 and the PLC controller, there is a heat exchange mode, and the PLC controller calculates the optimal opening of the first electric control butterfly valve 22, the second electric control butterfly valve 20, and the third electric control butterfly valve 23 according to the actual demand of carbon dioxide and steam inside the tobacco flue-curing house 1, and measures the gas flow in the direct heating pipe 21 and the heat exchange pipe 26 through the temperature compensation type flow sensor 24, so as to realize the real-time regulation and control of the butterfly valve opening. Under the action of the circulating fan 11, a part of gas generated after methanol combustion enters the interior of the baking room through the direct heat pipeline 21, a part of gas enters the cross counter-flow heat exchanger 19 through the discharge pipeline 25 and is discharged through the cross counter-flow heat exchanger 19, external fresh air in the cross counter-flow heat exchanger 19 is heated and enters the heat supply chamber 2 through the heat exchange pipeline 26, gas generated after methanol combustion is discharged to the atmosphere, and at the moment, the heat supply system works in a direct heat/heat exchange mode.
The amount of carbon dioxide and water vapor entering the tobacco curing barn 1 can be adjusted through the atmosphere adjuster 6, so that the gas atmosphere in the tobacco curing barn 1 is always kept in the best curing process, and the tobacco curing quality can be obviously improved.
EXAMPLE five
The embodiment is an improvement made on the basis of the fourth embodiment, as shown in fig. 5, the other side of the cross-counterflow heat exchanger 19 is rotatably connected with an atmosphere regulator cold air opening adjusting plate 17, one end of the atmosphere regulator cold air opening adjusting plate 17 is fixed with an atmosphere regulator opening adjusting motor 18, and the amount of air entering the heat exchange pipeline 26 can be controlled, flexibly and conveniently by arranging the atmosphere regulator opening adjusting motor 18 and the atmosphere regulator cold air opening adjusting plate 17.
In the device, when the tobacco leaves are baked, three stages are carried out:
a direct heating mode stage: at the tobacco leaf baking initial stage, the inside carbon dioxide of tobacco flue-curing house 1 and vapor demand are great, open first automatically controlled butterfly valve 22, and automatically controlled butterfly valve 2 and automatically controlled butterfly valve 3 are all closed, and the whole gas after the methyl alcohol burning in the methyl alcohol combustor 3 gets into tobacco flue-curing house 1 inside through the directly hot pipeline 21 in the atmosphere regulator 6 under circulating fan 11 effect this moment, and heating device in this device is with directly hot mode work for the tobacco leaf can be quick by the baking.
Direct heat/heat exchange mode stage: in the middle stage of baking, certain carbon dioxide is required in the tobacco curing barn 1, and excessive water vapor cannot be required, the PLC calculates the optimal opening degree of a first electric control butterfly valve 22, a second electric control butterfly valve 20 and a third electric control butterfly valve 23 according to the actual demand quantity of the carbon dioxide and the water vapor in the tobacco curing barn 1, gas flow in a direct heat pipeline 21 and a heat exchange pipeline 26 is measured through a temperature compensation type flow sensor 24, so that the real-time regulation and control of the opening degree of the butterfly valves are realized, under the action of a circulating fan 11, one part of gas generated after the methanol is combusted enters the tobacco curing barn through the direct heat pipeline 21, the other part of gas enters a cross reverse flow type heat exchanger 19 through an exhaust pipeline 25 and is exhausted through the cross reverse flow type heat exchanger 19, external fresh air in the cross reverse flow type heat exchanger 19 is heated and enters a heat supply chamber 2 through the heat exchange pipeline 26, and the gas generated after the methanol is exhausted to the atmosphere, at the moment, the heating device works in a direct heating/heat exchange mode
A heat exchange mode stage: in the final baking stage, the tobacco leaves enter a dry-rib period, at the moment, carbon dioxide and water vapor generated by methanol combustion are not needed to enter the tobacco curing room 1, the first electric control butterfly valve 22 is closed, the third electric control butterfly valve 23 and the second electric control butterfly valve 20 are opened, all gas generated by methanol combustion enters the cross counter-flow heat exchanger 19 through the atmosphere regulator 6, at the moment, all gas generated by methanol combustion is discharged to the atmosphere, fresh air enters the interior of the tobacco curing room after being heated by the cross counter-flow heat exchanger 19, the heat supply system works in a heat exchange mode, the atmosphere regulator 6 at the moment has the function of waste heat recovery, and the baking cost is favorably reduced.
On the basis of the finned tube heat exchanger 8, the atmosphere regulator 6 is additionally arranged, so that heat supply in a direct heating mode, a heat exchange mode and a direct heating/heat exchange mode can be realized, and the fuel utilization efficiency is greatly improved.
EXAMPLE six
In the present embodiment, an improvement is made on the basis of the fifth embodiment, as shown in fig. 4, moisture discharging ports 27 of the tobacco curing barn are arranged on both sides of the hot air return port, and a cold air inlet is formed in the outer surface above the heat supply chamber 2 for adjusting the temperature and humidity inside the tobacco curing barn;
furthermore, the waste heat recovery device comprises a cold air inlet housing 12 connected with a cold air inlet of the heat supply chamber 2, a rotary adjusting plate 15 is rotatably connected to the inner side of the cold air inlet housing 12, one side of the cold air inlet housing 12 is connected with a plate-fin heat exchanger 13 through a hose, and the other end of the plate-fin heat exchanger 13 is connected with a moisture exhaust port 27 of the tobacco curing barn through a plastic telescopic ventilation pipe 14.
In this embodiment, for the heat that the burning of make full use of methyl alcohol produced, reduce energy consumption and cost of toasting, be provided with waste heat recovery device, during the flue-cured tobacco leaf process, the inside high temperature and high humidity gas of tobacco flue-curing house 1 gets into behind the flexible ventilation pipe 14 of plastics heat exchanger 13 and discharges to the atmosphere, and under circulating fan 11 effect simultaneously, the low temperature and low humidity gas in the air gets into the flue-curing house after 13 heats of plate fin heat exchanger, realizes the recovery to the heat.
EXAMPLE seven
In this embodiment, an improvement is made on the basis of the sixth embodiment, as shown in fig. 6, a return air baffle 4 is arranged on the inner side of the hot air return inlet, and the return air baffle 4 is used for adjusting the size of the hot air return inlet;
specifically, the return air baffle 4 comprises a lifting rod 10 and a square baffle 9, the square baffle 9 is connected with the hot air return opening in a sliding manner, and the lifting rod 10 penetrates through the upper end of the tobacco flue-curing house 1 and is fixedly connected with the square baffle 9;
furthermore, a plurality of through holes are uniformly formed in the surface of the lifting rod 10, and a bolt is arranged to penetrate through the through holes to limit the position of the lifting rod 10.
In this embodiment, be equipped with return air baffle 4 in the hot-blast return air mouth department of tobacco flue-curing house 1, when tobacco flue-curing house 1 inside humidity was too high, promote lifting bar 10, it is fixed through the bolt, reduce the aperture of hot-blast return air mouth, the 1 internal pressure in tobacco flue-curing house increases this moment, and the forced discharge of 1 inside high humid gas in tobacco flue-curing house reduces 1 inside humidity in tobacco flue-curing house through waste heat recovery device.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (10)
1. A heating system of a methanol fuel tobacco flue-curing house with adjustable gas atmosphere comprises: tobacco flue-curing house (1), its characterized in that: the device is characterized by comprising a heat supply chamber (2) fixed at one end of a tobacco flue-curing house (1), a combustion hearth (7) is fixed inside the heat supply chamber (2), and the upper end of the combustion hearth (7) is connected with a finned tube type heat exchanger (8);
the surface of the heat supply chamber (2) is connected with a methanol burner (3) through bolts, and the methanol burner (3) is used for heating the heat supply chamber (2);
the upper end and the lower end of the interior of the heat supply chamber (2) close to the tobacco flue-curing house (1) are respectively provided with a hot air return inlet and a hot air inlet;
one end of the finned tube heat exchanger (8) is connected with an atmosphere regulator (6), and the atmosphere regulator (6) is used for regulating the content of water vapor and carbon dioxide;
and the circulating fan is positioned in the heat supply chamber (2) and is positioned at the upper end of the finned tube heat exchanger (8).
2. The heating system of the methanol fuel tobacco flue-curing house with adjustable gas atmosphere as claimed in claim 1, wherein: and a spray pipe of the methanol combustor (3) penetrates through the heat supply chamber (2) and is positioned on the inner side of the combustion hearth (7).
3. The heating system of the methanol fuel tobacco flue-curing house with adjustable gas atmosphere as claimed in claim 2, wherein: the atmosphere regulator (6) comprises a direct heating pipeline (21) and a first electric control butterfly valve (22), one end of the direct heating pipeline (21) is connected with the fin tube type heat exchanger (8) through a flange, the other end of the direct heating pipeline (21) is in through connection with the heat supply chamber (2), the first electric control butterfly valve (22) is arranged on the surface of the direct heating pipeline (21), a heat exchange pipeline (26) is fixed on the surface of the direct heating pipeline (21) and positioned on one side, far away from the heat supply chamber (2), of the first electric control butterfly valve (22), a third electric control butterfly valve (23) is arranged on the surface of the heat exchange pipeline (26), a discharge pipeline (25) is fixed on the surface of the direct heating pipeline (21) and positioned on one side, close to the heat supply chamber (2), of the first electric control butterfly valve (22), and a second electric control butterfly valve (20) is arranged on the surface of the discharge pipeline (25);
and a cross-counterflow heat exchanger (19), wherein one end of the cross-counterflow heat exchanger (19) is connected with the discharge pipeline (25) through the casing (16), and one side of the cross-counterflow heat exchanger (19) is connected with the heat exchange pipeline (26) through the casing (16).
4. The heating system of the methanol fuel tobacco flue-curing house with adjustable gas atmosphere as claimed in claim 3, wherein: and temperature compensation type flow sensors (24) are respectively arranged on the outer surface of the straight heat pipeline (21) and the outer surface of the heat exchange pipeline (26) and are used for measuring the gas flow.
5. The heating system of the methanol fuel tobacco flue-curing house with adjustable gas atmosphere as claimed in claim 4, wherein: the other side of the cross counter-flow heat exchanger (19) is rotatably connected with an atmosphere regulator cold air opening regulating plate (17), and one end of the atmosphere regulator cold air opening regulating plate (17) is fixed with an atmosphere regulator opening regulating motor (18).
6. The heating system of the methanol fuel tobacco flue-curing house with adjustable gas atmosphere as claimed in claim 5, wherein: the inner side of the hot air return inlet is provided with a return air baffle (4), and the return air baffle (4) is used for adjusting the size of the hot air return inlet;
the air return baffle (4) comprises a lifting rod (10) and a square baffle (9), the square baffle (9) is in sliding connection with the hot air return opening, and the lifting rod (10) penetrates through the upper end of the tobacco flue-curing house (1) and is fixedly connected with the square baffle (9).
7. The heating system of the methanol fuel tobacco flue-curing house with adjustable gas atmosphere as claimed in claim 6, wherein: a plurality of through holes are uniformly formed in the surface of the lifting rod (10);
and a bolt for penetrating the through hole to limit the position of the lifting rod (10).
8. The heating system of the methanol fuel tobacco flue-curing house with adjustable gas atmosphere as claimed in claim 7, wherein: a moisture discharging port (27) of the tobacco curing barn is arranged on each of two sides of the hot air return port, and a cold air inlet is formed in the outer surface above the heat supply chamber (2) and used for adjusting the temperature and humidity in the tobacco curing barn;
there is waste heat recovery device, including cold wind air intake housing (12), with the cold wind air intake connection of heat supply room (2), the inboard rotation of cold wind air intake housing (12) is connected with rotatory regulating plate (15), there is finned plate heat exchanger (13) one side of cold wind air intake housing (12) through hose connection, the other end of finned plate heat exchanger (13) passes through plastics flexible ventilation pipe (14) and is connected with tobacco flue-curing house hydrofuge mouth (27).
9. The heating system of the methanol fuel tobacco flue-curing house with adjustable gas atmosphere as claimed in claim 8, wherein: the heat supply chamber (2) and the tobacco curing barn (1) are separated by a partition plate, and the hot air return opening, the moisture discharging opening (27) of the tobacco curing barn and the hot air inlet are all arranged on the partition plate.
10. The heating system of the methanol fuel tobacco flue-curing house with adjustable gas atmosphere as claimed in claims 1-9, wherein: and the PLC is used for controlling the opening and closing angles of the first electric control butterfly valve (22), the second electric control butterfly valve (20) and the third electric control butterfly valve (23), is electrically connected with the first electric control butterfly valve (22), the second electric control butterfly valve (20) and the third electric control butterfly valve (23), and is electrically connected with the temperature compensation type flow sensor (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210521187.4A CN114698866A (en) | 2022-05-13 | 2022-05-13 | Gas atmosphere adjustable methanol fuel tobacco flue-curing house heating system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210521187.4A CN114698866A (en) | 2022-05-13 | 2022-05-13 | Gas atmosphere adjustable methanol fuel tobacco flue-curing house heating system |
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| CN114698866A true CN114698866A (en) | 2022-07-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210521187.4A Pending CN114698866A (en) | 2022-05-13 | 2022-05-13 | Gas atmosphere adjustable methanol fuel tobacco flue-curing house heating system |
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| JP2012026711A (en) * | 2010-07-28 | 2012-02-09 | Sanshu Sangyo Co Ltd | Hybrid dryer, and drying method and drying control method of dryer |
| CN104839878A (en) * | 2015-05-14 | 2015-08-19 | 杨义和 | Flue-cured tobacco house and flue-cured tobacco house combustion radiator |
| CN111671126A (en) * | 2020-06-09 | 2020-09-18 | 福建大为能源有限公司 | Directly-heated tobacco leaf curing barn using methanol fuel |
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| CN111981683A (en) * | 2020-09-07 | 2020-11-24 | 广东奇林电气股份有限公司 | Energy-saving plant greenhouse recarburization and temperature regulation equipment and control method thereof |
| CN213428290U (en) * | 2020-08-05 | 2021-06-15 | 深圳中燃哈工大燃气技术研究院有限公司 | Small-sized gas type automatic energy-saving tobacco flue-curing house |
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2022
- 2022-05-13 CN CN202210521187.4A patent/CN114698866A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012026711A (en) * | 2010-07-28 | 2012-02-09 | Sanshu Sangyo Co Ltd | Hybrid dryer, and drying method and drying control method of dryer |
| CN104839878A (en) * | 2015-05-14 | 2015-08-19 | 杨义和 | Flue-cured tobacco house and flue-cured tobacco house combustion radiator |
| CN211832773U (en) * | 2020-03-25 | 2020-11-03 | 云南省烟草农业科学研究院 | Clean and environment-friendly methanol fuel tobacco leaf curing barn |
| CN111671126A (en) * | 2020-06-09 | 2020-09-18 | 福建大为能源有限公司 | Directly-heated tobacco leaf curing barn using methanol fuel |
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Application publication date: 20220705 |