CN111671126A - Directly-heated tobacco leaf curing barn using methanol fuel - Google Patents
Directly-heated tobacco leaf curing barn using methanol fuel Download PDFInfo
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- CN111671126A CN111671126A CN202010515499.5A CN202010515499A CN111671126A CN 111671126 A CN111671126 A CN 111671126A CN 202010515499 A CN202010515499 A CN 202010515499A CN 111671126 A CN111671126 A CN 111671126A
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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
Abstract
A directly-heated tobacco leaf flue-curing house using methanol fuel comprises a flue-curing chamber, a hot air circulation mixing chamber, an internal circulation fan, a methanol fuel clean combustion assembly and a fresh air and return air mixing assembly which are matched with each other; wherein, flue-cured tobacco room and heated air circulation mixing chamber divide into two regions with the flue-cured tobacco room to through the inside circulation fan intercommunication, the clean combustion assembly of methyl alcohol fuel sets up in the heated air circulation mixing chamber, new trend and backward flow wind mixing assembly respectively with flue-cured tobacco room, heated air circulation mixing chamber and external intercommunication make new trend and backward flow wind mix and reach the temperature and the humidity that the technology needs at the heated air circulation mixing chamber and reentrant flue-cured tobacco room and get into next cycle, can reduce the consumption of fuel, energy-concerving and environment-protective.
Description
The technical field is as follows:
the invention relates to a flue-curing barn for baking tobacco leaves, in particular to a directly-heated tobacco leaf flue-curing barn using methanol fuel.
Background art:
the curing barn is indispensable professional equipment in tobacco leaf curing, and the energy sources used in the existing novel intensive tobacco leaf curing barn adopt diesel oil or natural gas abroad and mainly use coal as fuel at home. Since the coal consumption per 1kg of dry smoke produced is generally 1.5kg to 2kg, the energy utilization efficiency is only about 30%. The coal used for tobacco leaf baking can generate NOx, SO2 and the like, and cause pollution to the environment. Therefore, the improvement of the energy utilization rate and the ecological environment is the necessary way for the intensive curing barn to gradually adopt novel energy.
In recent years, biomass fuel, electric energy (heat pump, also called as air energy), solar energy, alcohol-based fuel and other energy sources are explored and tried in bulk curing barn in many domestic areas. As for natural gas, liquefied petroleum gas and other energy sources, the application in the curing barn is rare because the energy source supply is difficult to reach the wide tobacco leaf producing area.
The new energy is gradually applied to the bulk curing barn, has obvious effects of reducing environmental pollution and improving energy efficiency, and creates conditions for realizing automatic control of the bulk curing barn. However, various new energy curing barn have the advantages and the disadvantages that the new energy curing barn cannot be avoided.
The energy technology adopted by the existing tobacco leaf intensive curing barn has the following problems:
1 the biomass energy is a safe and clean energy relative to coal, but the biomass particle fuel is solid fuel, and the thermal inertia of combustion is large, so the temperature adjusting precision is still not high. Dust, tar and nitrogen oxide can be generated after the biomass is combusted, the emission is still not clean, meanwhile, the dust and the tar are accumulated on the inner wall of the heat exchanger, the heat exchange efficiency is reduced, and the energy consumption is high. The problems of short fault-free working time of the feeding and ignition mechanism and the like also exist.
The main component of the alcohol-based fuel is methanol, in order to improve the heat value of the alcohol-based fuel, other substances are added into the alcohol-based fuel, more components are added, the complexity of smoke components after combustion is increased, and the combustion emission is not clean, so that direct heat exchange cannot be adopted, and only an indirect heat exchange mode can be adopted. At present, alcohol-based fuels used in a baking room are all liquid fuels with various additives added in methanol, so that the baking cost of the alcohol-based fuels is far higher than that of coal, and the alcohol-based fuels are not clean.
3 the energy efficiency of the heat pump is reduced along with the increase of the heating temperature, when the set temperature of the drying room is higher or the requirement of the heating rate is higher, the requirement of the drying room cannot be met by only depending on the heat pump for heating, so that the heat pump type units are all provided with electric heaters, and when the electric heaters are used, the energy efficiency is greatly reduced. In addition, the price of the heat pump unit is very high, and the requirement on power supply is high, and if the electric charge and the equipment cost are calculated to the baking cost, the baking cost of the heat pump type baking room is higher in all energy sources. In addition, the heat pump type bulk curing barn has a working period of only two months every year, the rest of the time is in a non-working state, and it is difficult to maintain the normal work of the heat pump unit every year in view of the environmental conditions of the curing barn.
The 4 solar energy has the obvious advantages of cleanness and sustainable utilization, but the solar energy has intermittency and dispersity, and the solar energy cannot be used as a heat source in the conventional tobacco leaf baking process, so that a solar energy heat supply system and a high-temperature heat pump energy source system are combined to carry out a tobacco leaf baking test in the baking process.
The invention content is as follows:
in view of the above problems of the prior art, the present invention is directed to providing a direct heating tobacco flue-curing barn using methanol fuel, which can reduce fuel consumption.
In order to achieve the purpose, the invention adopts the following technical scheme:
a directly-heated tobacco leaf flue-curing house using methanol fuel comprises a flue-curing chamber, a hot air circulation mixing chamber, an internal circulation fan, a methanol fuel clean combustion assembly and a fresh air and return air mixing assembly which are matched with each other; the flue-cured tobacco chamber and the heated air circulation mixing chamber divide the flue-cured tobacco chamber into two areas and are communicated through the internal circulating fan, the methanol fuel clean combustion assembly is arranged in the heated air circulation mixing chamber, and the fresh air and return air mixing assembly is respectively communicated with the flue-cured tobacco chamber, the heated air circulation mixing chamber and the outside to mix fresh air and return air, and the fresh air and the return air are subjected to temperature and humidity required by the process in the heated air circulation mixing chamber and then enter the flue-cured tobacco chamber to enter next circulation.
Furthermore, the methanol fuel clean combustion assembly comprises a methanol fuel clean combustor, a methanol fuel pump and a methanol fuel combustion chamber which are mutually matched and communicated; the methanol liquid fuel is pressurized by the methanol fuel pump and enters the methanol fuel clean burner to be gasified and combusted, the combustion flame enters the methanol fuel combustion chamber arranged in the hot air mixing chamber to be completely combusted, and the clean high-temperature flue gas after the combustion is finished is discharged into the hot air mixing chamber from a high-temperature flue gas outlet of the methanol fuel combustion chamber.
Further, fresh air and backflow air mixing assembly comprises: the side wall of the flue-cured tobacco chamber is provided with a damp and hot waste gas outlet which is communicated with a low-grade heat source heat recoverer through a damp and hot waste gas conveying pipe, the low-grade heat source heat recoverer is provided with a fresh air inlet and a waste gas outlet, and the other end of the low-grade heat source heat recoverer is communicated with a hot air circulating mixing chamber through a fresh air supply pipe; the damp and hot waste gas in the tobacco curing chamber enters a low-grade heat source heat recoverer to exchange heat with fresh air, and then the low-temperature waste gas is discharged from a waste gas outlet; fresh air enters from a fresh air inlet on the low-grade heat source heat recoverer, the temperature of the fresh air subjected to heat exchange with damp and hot waste gas is raised, and the raised fresh air is sucked into a hot air mixing chamber by a circulating fan in the curing barn through a fresh air supply pipe.
Furthermore, a fresh air volume adjusting valve is arranged on the fresh air supply pipe.
Furthermore, a damp and hot waste gas emergency discharge valve is arranged on the damp and hot waste gas conveying pipe.
Further, the side wall of the flue-cured tobacco chamber is provided with a flue-cured tobacco chamber airtight door.
Furthermore, a system control instrument is arranged on the side wall of the flue-cured tobacco chamber.
Compared with the prior art, the fresh air temperature is increased through the heat recoverer, so that the fuel consumption can be greatly reduced. The methanol fuel which is really clean, environment-friendly, economical, safe and reliable is explored and used for a complete technical scheme for the operation of an automatic bulk curing barn and practical bulk curing barn equipment, so that the aims of reducing environmental pollution, improving the tobacco leaf curing quality and reducing the curing cost are achieved. Develops novel energy and technology suitable for baking tobacco leaves and promotes the development of modernization of tobacco leaf baking. The method is also an aspect of realizing energy diversification, and the energy diversification meets the requirements of national conditions and energy safety of China.
Description of the drawings:
the invention is described in detail below with reference to the accompanying drawings:
FIG. 1 is a schematic diagram of the present invention.
The specific implementation mode is as follows:
the invention is described in detail below with reference to the following figures and examples:
fig. 1 shows an embodiment of the present invention, which is a directly-heated tobacco flue-curing barn using methanol fuel, and comprises a flue-curing barn 15, a flue-curing chamber 17, a hot air circulating mixing chamber 4, an internal circulating fan 5, a methanol fuel clean combustion assembly, and a fresh air and return air mixing assembly; the flue-cured tobacco chamber 17 and the heated air circulation mixing chamber 4 divide the flue-cured tobacco chamber into two areas and are communicated with each other through the internal circulating fan 5, the methanol fuel clean combustion assembly is arranged in the heated air circulation mixing chamber, and the fresh air and return air mixing assembly is respectively communicated with the flue-cured tobacco chamber 17, the heated air circulation mixing chamber 4 and the outside to mix the fresh air and the return air, and the temperature and the humidity which are required by the process are achieved in the heated air circulation mixing chamber, and then enter the flue-cured tobacco chamber 17 to enter the next circulation.
In a specific structure, the methanol fuel clean combustion assembly comprises a methanol fuel clean combustor 1, a methanol fuel pump 2 and a methanol fuel combustion chamber 3 which are mutually matched and communicated; the methanol liquid fuel is pressurized by a methanol fuel pump 2 and enters a methanol fuel clean burner 1 for gasification combustion, combustion flame enters a methanol fuel combustion chamber 3 arranged in a hot air mixing chamber to achieve complete combustion, and clean high-temperature flue gas after combustion is discharged into the hot air mixing chamber from a high-temperature flue gas outlet 6 of the methanol fuel combustion chamber.
Fresh air and return air mixed component be two sets of, set up respectively in 15 both sides of roast room, every group includes: the side wall of the flue-cured tobacco chamber is provided with damp and hot waste gas outlets 12 and 21 which are communicated with low-grade heat source heat recoverers 11 and 22 through damp and hot waste gas conveying pipes 13 and 20, the low-grade heat source heat recoverer is provided with fresh air inlets 10 and 23 and waste gas outlets 9 and 24, and the other end of the low-grade heat source heat recoverer is communicated with a hot air circulating mixing chamber 4 through fresh air supply pipes 7 and 26; the damp and hot waste gas in the tobacco flue-curing chamber 17 enters a low-grade heat source heat recoverer to exchange heat with fresh air, and then the low-temperature waste gas is discharged from a waste gas outlet; fresh air enters from a fresh air inlet on the low-grade heat source heat recoverer, the temperature of the fresh air subjected to heat exchange with damp and hot waste gas is raised, and the raised fresh air is sucked into a hot air mixing chamber by a circulating fan in the curing barn through a fresh air supply pipe.
The fresh air supply pipe can be provided with fresh air volume adjusting valves 8 and 25. And the damp and hot waste gas conveying pipe can be provided with damp and hot waste gas emergency discharge valves 14 and 19. The side wall of the flue-cured tobacco chamber is provided with a flue-cured tobacco chamber airtight door 16. And a system controller 18 is arranged on the side wall of the tobacco curing chamber.
The working process is as follows: methanol liquid fuel enters a methanol fuel clean burner 1 through the pressurization of a fuel pump 2, the methanol liquid fuel is gasified and combusted in the alcohol fuel clean burner 1, flame enters a combustion chamber 3 arranged in a hot air mixing chamber 4 to achieve complete combustion, clean high-temperature flue gas after the combustion is finished is discharged into the hot air mixing chamber 4 from a high-temperature flue gas outlet 6, air flow flowing back in a tobacco curing chamber 17 is mixed with fresh air introduced from fresh air supply pipes 7 and 26 under the action of a circulating fan 5 in the tobacco curing barn, and hot air reaching the temperature and the humidity required by the process enters the tobacco curing chamber 17 and enters the next circulation; the lower part of the tobacco flue-curing chamber 17 is provided with damp and hot waste gas outlets 12 and 21, the outlets are externally connected with low-grade heat source heat recoverers 11 and 22, and low-temperature waste gas after the damp and hot waste gas enters the low-grade heat source heat recoverer to exchange heat with fresh air is discharged from waste gas outlets 9 and 24; fresh air enters from fresh air inlets 10 and 23 on low-grade heat source heat recoverers 11 and 22, the temperature of fresh air subjected to heat exchange with damp and hot waste gas is raised, and the heated fresh air is sucked into a hot air mixing chamber 4 by circulating fans inside the curing barn through fresh air supply pipes 7 and 26. Because the temperature of the fresh air is increased through the heat recoverer, the consumption of fuel can be reduced.
The invention can transform the existing intensive tobacco leaf flue-curing barn burning coal and biomass fuel, keeps the original flue-curing barn structure, installs the methanol fuel clean burner 1 at the burning hearth door of the original flue-curing barn, takes the original hearth as a combustion chamber, opens the upper end cover of the original heat exchanger, discharges the high-temperature flue gas after the methanol burning to the original hot air mixing chamber from the position, and closes the original smoke outlet. The low-grade heat source recoverers 11 and 22 are connected to a moisture exhaust port of the original curing barn to increase the temperature of fresh air. And (3) adding a methanol direct heating type flue-cured tobacco process expert system controller 18.
On the basis of the embodiment 1, a smoke reversing air valve can be arranged on the heat exchanger to control smoke generated by methanol combustion to be discharged into the hot air mixing chamber 4 or out of the tobacco leaf roasting room 15. When the flue gas is discharged into the hot air mixing chamber, the flue gas is a directly-heated hot air curing barn, and the flue gas is discharged out of the tobacco curing barn 15, namely an indirect hot air curing barn. So as to adapt to different use requirements and widen the application range.
The existing intensive tobacco leaf curing barn using coal and biomass fuel is of a brick-concrete structure, and has the advantages of large heat capacity of the curing barn body, large heat loss due to poor heat preservation performance and slow temperature rise. The energy consumption is high. For more energy-conserving, on the basis of embodiment 2, change the heat preservation structure of roast room into the preparation of the steel face type phenolic aldehyde composite insulation board that the thermal capacity is little, and the heat preservation is effectual.
The direct-fired hot air system special for the tobacco leaf curing barn using the methanol fuel gasification burner achieves the purposes of clean hot air, no dust, no SO2 and NOX lower than 20mg/Nm3. The energy utilization rate is improved by 40 percent. The actual low-grade waste heat recovery system special for the curing barn achieves the aim of saving energy by 15%.
The interlocking automatic control of a combustion machine of a tobacco leaf curing barn, the air quantity regulation of a circulating fan of the curing barn, the temperature and humidity regulation and the heat recovery system is achieved, all control functions are achieved through one control screen, and finally the unattended and automatic operation of the curing barn is achieved.
The flue gas generated by clean combustion of the methanol fuel is very clean, so the method has the precondition of adopting direct hot air, improves the energy utilization rate by the direct hot air, and has obvious energy-saving effect. Moreover, because a large amount of clean carbon dioxide is generated after the methanol is combusted, the hot air containing the carbon dioxide is very beneficial to the yellowing of the tobacco leaves, and the baking quality and the baking grade of the tobacco leaves can be improved. Brings the practical benefit of increasing the income for tobacco growers.
The energy of the bulk curing barn adopts industrial methanol meeting GB standard, no additive component for improving calorific value is added, and after the methanol meeting GB 338-2011 standard is completely combusted, the products discharged by the methanol are only CO2 and H2O. The cleaning agent is very clean, is a real clean energy source, and has a cleaning degree far higher than that of natural gas and liquefied petroleum gas. Because the physical property of methanol is different from that of the traditional fuel, the complete combustion of the methanol can not be realized by the traditional liquid fuel combustion technology and the gas fuel combustion technology, and the complete gasification burner specially suitable for combusting the methanol fuel is adopted in the scheme, so that the requirement of clean emission is met.
The hot air for baking can be divided into a direct-fired flue type hot air furnace and an indirect heat exchange type hot air furnace according to different cleanliness of output media. The medium output by the direct hot blast stove is flue gas generated by fuel combustion, and can be matched with material drying with higher temperature of a heat medium and no strict requirement on the cleanliness of the heat medium after pre-dedusting, so that the energy utilization efficiency is high; the medium of indirect hot-blast furnace output is the clean hot-air after the abundant heat exchange of heat exchanger, is applicable to the material drying that requires high hot-blast cleanliness factor, and the energy utilization efficiency is low.
In order to reduce the cost of tobacco leaf baking fuel, direct hot air is the most energy-saving, but no matter the fuel is coal, biomass, alcohol-based fuel, natural gas or liquefied petroleum gas, the direct hot air mode cannot be adopted, and because the flue gas is not clean, the tobacco leaves can be seriously polluted, and only an indirect heat exchange type hot blast stove with low energy efficiency can be used.
While the foregoing description shows and describes the preferred embodiments of the present invention, it is to be understood that the invention is not limited to the forms disclosed herein, but is not to be construed as excluding other embodiments and is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as described herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (7)
1. A directly-heated tobacco leaf flue-curing barn using methanol fuel is characterized in that: the device comprises a tobacco curing chamber, a hot air circulating mixing chamber, an internal circulating fan, a methanol fuel clean combustion assembly and a fresh air and return air mixing assembly which are matched with each other; the flue-cured tobacco chamber and the heated air circulation mixing chamber divide the flue-cured tobacco chamber into two areas and are communicated through the internal circulating fan, the methanol fuel clean combustion assembly is arranged in the heated air circulation mixing chamber, and the fresh air and return air mixing assembly is respectively communicated with the flue-cured tobacco chamber, the heated air circulation mixing chamber and the outside to mix fresh air and return air, and the fresh air and the return air are subjected to temperature and humidity required by the process in the heated air circulation mixing chamber and then enter the flue-cured tobacco chamber to enter next circulation.
2. The direct heating type tobacco curing barn using methanol fuel according to claim 1, wherein: the methanol fuel clean combustion assembly comprises a methanol fuel clean combustor, a methanol fuel pump and a methanol fuel combustion chamber which are mutually matched and communicated; the methanol liquid fuel is pressurized by the methanol fuel pump and enters the methanol fuel clean burner to be gasified and combusted, the combustion flame enters the methanol fuel combustion chamber arranged in the hot air mixing chamber to be completely combusted, and the clean high-temperature flue gas after the combustion is finished is discharged into the hot air mixing chamber from a high-temperature flue gas outlet of the methanol fuel combustion chamber.
3. The direct heating type tobacco curing barn using methanol fuel according to claim 1 or 2, wherein: fresh air and return air mixing assembly includes: the side wall of the flue-cured tobacco chamber is provided with a damp and hot waste gas outlet which is communicated with a low-grade heat source heat recoverer through a damp and hot waste gas conveying pipe, the low-grade heat source heat recoverer is provided with a fresh air inlet and a waste gas outlet, and the other end of the low-grade heat source heat recoverer is communicated with a hot air circulating mixing chamber through a fresh air supply pipe; the damp and hot waste gas in the tobacco curing chamber enters a low-grade heat source heat recoverer to exchange heat with fresh air, and then the low-temperature waste gas is discharged from a waste gas outlet; fresh air enters from a fresh air inlet on the low-grade heat source heat recoverer, the temperature of the fresh air subjected to heat exchange with damp and hot waste gas is raised, and the raised fresh air is sucked into a hot air mixing chamber by a circulating fan in the curing barn through a fresh air supply pipe.
4. The direct heating type tobacco curing barn using methanol fuel according to claim 3, wherein: and a fresh air volume adjusting valve is arranged on the fresh air supply pipe.
5. The direct heating type tobacco curing barn using methanol fuel according to claim 3, wherein: and a damp and hot waste gas emergency discharge valve is arranged on the damp and hot waste gas conveying pipe.
6. The direct heating type tobacco curing barn using methanol fuel according to claim 3, wherein: the side wall of the flue-cured tobacco chamber is provided with a flue-cured tobacco chamber airtight door.
7. The direct heating type tobacco curing barn using methanol fuel according to claim 3, wherein: and a system control instrument is arranged on the side wall of the flue-cured tobacco chamber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010515499.5A CN111671126A (en) | 2020-06-09 | 2020-06-09 | Directly-heated tobacco leaf curing barn using methanol fuel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010515499.5A CN111671126A (en) | 2020-06-09 | 2020-06-09 | Directly-heated tobacco leaf curing barn using methanol fuel |
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| CN202010515499.5A Pending CN111671126A (en) | 2020-06-09 | 2020-06-09 | Directly-heated tobacco leaf curing barn using methanol fuel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114698866A (en) * | 2022-05-13 | 2022-07-05 | 云南省烟草公司红河州公司 | Gas atmosphere adjustable methanol fuel tobacco flue-curing house heating system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105054271A (en) * | 2015-07-07 | 2015-11-18 | 深圳市赛维沃科技有限公司 | Alcohol group fuel tobacco curing house |
| CN209546897U (en) * | 2019-01-11 | 2019-10-29 | 东南大学 | A kind of tobacco first baking system of natural gas energy supply |
| CN110425522A (en) * | 2019-08-26 | 2019-11-08 | 刘剑飚 | Environmentally friendly low nitrogen burning heat-exchanger rig and its method for controlling combustion |
| CN212345272U (en) * | 2020-06-09 | 2021-01-15 | 福建大为能源有限公司 | Directly-heated tobacco leaf curing barn using methanol fuel |
-
2020
- 2020-06-09 CN CN202010515499.5A patent/CN111671126A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105054271A (en) * | 2015-07-07 | 2015-11-18 | 深圳市赛维沃科技有限公司 | Alcohol group fuel tobacco curing house |
| CN209546897U (en) * | 2019-01-11 | 2019-10-29 | 东南大学 | A kind of tobacco first baking system of natural gas energy supply |
| CN110425522A (en) * | 2019-08-26 | 2019-11-08 | 刘剑飚 | Environmentally friendly low nitrogen burning heat-exchanger rig and its method for controlling combustion |
| CN212345272U (en) * | 2020-06-09 | 2021-01-15 | 福建大为能源有限公司 | Directly-heated tobacco leaf curing barn using methanol fuel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114698866A (en) * | 2022-05-13 | 2022-07-05 | 云南省烟草公司红河州公司 | Gas atmosphere adjustable methanol fuel tobacco flue-curing house heating system |
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