CN112690486A - Redrying method for keeping tobacco fragrance substances - Google Patents
Redrying method for keeping tobacco fragrance substances Download PDFInfo
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- CN112690486A CN112690486A CN202110164436.4A CN202110164436A CN112690486A CN 112690486 A CN112690486 A CN 112690486A CN 202110164436 A CN202110164436 A CN 202110164436A CN 112690486 A CN112690486 A CN 112690486A
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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
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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
- A24B3/04—Humidifying or drying tobacco bunches or cut tobacco
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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
- A24B3/16—Classifying or aligning leaves
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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
- A24B9/00—Control of the moisture content of tobacco products, e.g. cigars, cigarettes, pipe tobacco
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Abstract
The invention discloses a redrying method for keeping tobacco fragrance substances, which comprises the following steps: carrying out ultrasonic atomization pre-conditioning treatment on tobacco leaves; carrying out ultrasonic atomization vacuum moisture regaining treatment on tobacco leaves; atomizing and moistening the tobacco leaves; performing threshing and air separation treatment on tobacco leaves; and (4) carrying out microwave redrying and drying treatment on the tobacco leaves. According to the redrying method for keeping the tobacco fragrance substances, ultrasonic atomization pre-moisture regain is beneficial to reducing subsequent moisture regain intensity and fragrance loss; the ultrasonic atomization vacuum moisture regaining adopts lower temperature and higher humidity to improve the humidifying effect, retain the characteristic aroma substances of the tobacco leaves and reduce the breakage of the tobacco leaves; the microwave redrying drying realizes low-temperature redrying, shortens the redrying time, has less loss of flavor substances, uniform water loss of leaves and reduces the shrinkage of tobacco leaves; through the steps of ultrasonic atomization pre-conditioning, ultrasonic atomization vacuum conditioning, atomization wetting and microwave drying redrying, the loss of flavor substances of the tobacco leaves is reduced while the redrying processing effect is ensured, and the quality of the redried tobacco leaves is improved.
Description
Technical Field
The invention relates to the technical field of redrying processing, in particular to a redrying method for keeping tobacco fragrance substances.
Background
The threshing and redrying process aims to separate and redry tobacco leaves and tobacco stems, convey tobacco sheet raw materials for cigarette processing, and play an important role in a tobacco shred making formula and the quality of cigarette products. Therefore, threshing and redrying play a key role in controlling the quality of the raw materials of the tobacco flakes and become an important link in the industrial production of cigarettes. In the past, the focus of the redrying processing technology is that indexes such as finished product moisture, breakage rate and the like of the poly coke are marked, and a high-strength processing mode is adopted, and higher temperature parameters are set in each processing link, so that the moisture regaining effect, the leaf moistening effect and the drying effect in the processing process are ensured. Researches show that high-temperature processing can cause serious loss of neutral aroma substances such as tobacco leaf aldehyde, ketone, alcohol and the like, and influence the sensory quality of a final finished product.
With the continuous improvement of tobacco leaf raw material requirements of cigarette enterprises, the retention of tobacco leaf aroma substances also gradually becomes a new requirement of threshing and redrying processes. How to effectively reduce the loss of flavor substances and better keep the flavor characteristics of high-quality raw materials also becomes a new direction for researching threshing and redrying processes. However, most of the existing redrying aroma-maintaining processes are low-strength processing processes, and through adjusting relevant parameters such as redrying temperature and the like, although aroma-maintaining effects can be achieved, problems such as insufficient redrying degree, excessive moisture of finished products and the like can be caused, drying effects and aroma-maintaining effects cannot be achieved at the same time, and improvement on redrying process methods is still needed.
Therefore, in order to effectively retain the tobacco sheet flavor substances on the premise of ensuring the quality of redrying processing, a redrying method for retaining the tobacco leaf flavor substances is urgently needed.
Disclosure of Invention
The invention aims to provide a redrying method for keeping tobacco fragrance substances, which aims to solve the problems in the prior art, and reduces the loss of the tobacco fragrance substances and improves the quality of the redried tobacco while effectively ensuring the redrying processing effect through the steps of ultrasonic atomization pre-dampening, ultrasonic atomization vacuum dampening, atomization leaf moistening, microwave drying redrying and the like.
The invention provides a redrying method for keeping tobacco fragrance substances, which comprises the following steps:
carrying out ultrasonic atomization pre-conditioning treatment on tobacco leaves;
carrying out ultrasonic atomization vacuum moisture regaining treatment on the tobacco leaves;
carrying out atomization and moistening treatment on the tobacco leaves;
performing threshing and air separation treatment on the tobacco leaves;
and carrying out microwave redrying and drying treatment on the tobacco leaves.
The redrying method for keeping the tobacco aroma substances as described above, wherein preferably, the ultrasonic atomization pre-conditioning treatment is performed on the tobacco, and specifically comprises the following steps:
pre-dampening the tobacco leaves by adopting an ultrasonic humidifier in a dampening room;
after the pre-dampening is finished, manually selecting leaves;
and after manual leaf selection is finished, carrying out moisture regain treatment on the tobacco leaves in the moisture room.
The redrying method for keeping the tobacco fragrance substances as described above, wherein preferably, the pre-conditioning treatment is performed on the tobacco leaves by using an ultrasonic humidifier in the conditioning room, and specifically comprises the following steps:
setting a corresponding number of ultrasonic humidifiers according to the volume of the tidal room;
increasing the environmental humidity of the tidal room to 75-80% by adopting an ultrasonic humidifier;
after the environmental humidity of the tidal room reaches a set requirement, closing the ultrasonic humidifier;
and putting the tobacco leaves into a dampening room for dampening for 1 day.
The redrying method for keeping the tobacco aroma substances as described above, wherein preferably, the ultrasonic atomization vacuum moisture regain treatment of the tobacco specifically includes:
carrying out moisture detection on tobacco leaves to be remoistened;
carrying out vacuum treatment on tobacco leaves to be remoistened;
and carrying out ultrasonic atomization and moisture regaining treatment on the tobacco leaves to be subjected to moisture regaining treatment, and determining ultrasonic atomization and moisture regaining treatment with different intensities based on a moisture detection result.
The redrying method for keeping the tobacco fragrance substances as described above, wherein preferably, the ultrasonic atomization and moisture regaining treatment of the tobacco to be dampened specifically includes:
atomizing water into ultrafine particles with the particle size of 1-5 mu m by using high-frequency oscillation of ultrasonic waves, and introducing the ultrafine particles into the wall of a vacuum box of a vacuum moisture regaining box by using negative pressure difference.
The redrying method for keeping the tobacco aroma substances preferably comprises the following steps of:
before feeding, introducing hot air, and preheating the leaf moistening cylinder for 6-9 min;
after feeding, spraying atomized water on the tobacco flakes, and carrying out at least two times of leaf moistening treatment, wherein in the first leaf moistening treatment, the temperature is 37-47 ℃, the humidity is 18-20%, the inclination angle of a leaf moistening cylinder is adjusted to be 3.5-4.5 degrees, and the leaf moistening time is 7-9 min; in the second leaf moistening treatment, the temperature is 40-50 ℃, the humidity is 19-21%, the inclination angle of the leaf moistening cylinder is adjusted to be 3.5-4.5 ℃, and the leaf moistening time is 7-9 min.
The redrying method for keeping tobacco fragrance substances as described above, wherein preferably, the atomizing moisture with compressed air specifically comprises:
compressing air into a stream of air flow by a compressor and spraying out from an air nozzle;
the liquid in the atomizing cup is impacted by the airflow sprayed out of the air nozzle, so that the liquid in the atomizing cup is gasified into atomized gas;
and humidifying the tobacco flakes by utilizing the atomized gas.
The redrying method for keeping the tobacco aroma substances preferably comprises the following steps of:
and sequentially beating the tobacco leaves by using at least four groups of beating equipment, wherein the rotating speed of a first beating roller is 690-710 r/min, the rotating speed of a second beating roller is 640-660 r/min, the rotating speed of a third beating roller is 650-670 r/min, and the rotating speed of a fourth beating roller is 850-860 r/min.
The redrying method for keeping the tobacco aroma substances as described above, wherein preferably, the microwave redrying and drying treatment of the tobacco specifically includes:
performing microwave drying treatment on the tobacco leaves in a microwave heating and drying mode;
after drying, cooling the tobacco leaves in a cooling area;
and after cooling, carrying out moisture regain treatment on the tobacco leaves in a moisture regain area.
The redrying method for keeping the tobacco fragrance substances as described above, wherein preferably, the microwave drying treatment is performed on the tobacco leaves by adopting a microwave heating and drying mode, and specifically comprises the following steps:
and (3) the tobacco leaves subjected to threshing and air separation enter a tunnel type microwave heating system, and microwave heating and drying are carried out on the tobacco leaves by adopting a microwave transmitting assembly of the microwave heating system, so that the tobacco stems and the tobacco leaves are quickly dehydrated under the action of microwave energy.
The invention provides a redrying method for keeping tobacco fragrance substances, wherein ultrasonic atomization pre-moisture regain can effectively improve the water content in the material preparation link, thus being beneficial to reducing the subsequent moisture regain intensity and reducing the fragrance loss; compared with the traditional high-temperature steam humidifying mode, the ultrasonic atomization vacuum dampening can effectively improve the humidifying effect by adopting lower temperature and higher humidity, effectively retain the characteristic aroma substances of the tobacco leaves and reduce the tobacco leaf breakage in the subsequent links; the microwave redrying drying mode can be used for realizing low-temperature redrying, the redrying time can be shortened, the loss of flavor substances is less, the flavor substances of the tobacco leaves are reserved to the greatest extent, the moisture loss of the leaves is more uniform, the shrinkage of the redried tobacco leaves is effectively reduced, and the redrying quality of the leaves is improved; therefore, through the steps of ultrasonic atomization pre-conditioning, ultrasonic atomization vacuum conditioning, atomization wetting, microwave drying and redrying and the like, the loss of flavor substances of the tobacco leaves is reduced while the redrying processing effect is effectively ensured, and the quality of the redried tobacco leaves can be effectively improved.
Drawings
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described with reference to the accompanying drawings, in which:
fig. 1 is a flowchart of an embodiment of a redrying method for keeping tobacco fragrance substances according to the present invention.
Detailed Description
In order to make the technical field of the invention better understand the scheme of the embodiment of the invention, the embodiment of the invention is further described in detail with reference to the drawings and the implementation mode.
Aiming at the problems that most of the prior redrying and aroma-keeping processes are low-strength processing processes, although aroma-keeping effects can be achieved by adjusting relevant parameters such as redrying temperature and the like, the problems of insufficient redrying degree, excessive moisture of finished products and the like can be caused, and drying effects and aroma-keeping effects cannot be considered at the same time. The invention provides a redrying method for keeping tobacco fragrance substances, wherein ultrasonic atomization pre-moisture regain can effectively improve the water content in the material preparation link, thus being beneficial to reducing the subsequent moisture regain intensity and reducing the fragrance loss; compared with the traditional high-temperature steam humidifying mode, the ultrasonic atomization vacuum dampening can effectively improve the humidifying effect by adopting lower temperature and higher humidity, effectively retain the characteristic aroma substances of the tobacco leaves and reduce the tobacco leaf breakage in the subsequent links; the microwave redrying drying mode can be used for realizing low-temperature redrying, the redrying time can be shortened, the loss of flavor substances is less, the flavor substances of the tobacco leaves are reserved to the greatest extent, the moisture loss of the leaves is more uniform, the shrinkage of the redried tobacco leaves is effectively reduced, and the redrying quality of the leaves is improved; therefore, through the steps of ultrasonic atomization pre-conditioning, ultrasonic atomization vacuum conditioning, atomization wetting, microwave drying and redrying and the like, the loss of flavor substances of the tobacco leaves is reduced while the redrying processing effect is effectively ensured, and the quality of the redried tobacco leaves can be effectively improved.
As shown in fig. 1, an embodiment of the present invention provides a redrying method for keeping tobacco leaves fragrant substances, including the following steps:
and step S1, carrying out ultrasonic atomization pre-conditioning treatment on the tobacco leaves.
Wherein, the step S1 specifically includes:
step S11, pre-conditioning the tobacco leaves by adopting an ultrasonic humidifier in a conditioning room;
the ultrasonic humidifier atomizes water into ultrafine particles through ultrasonic high-frequency oscillation during working, and cancels a high-strength vacuum moisture regaining procedure after the tobacco leaves reach higher water content, so that the subsequent processing strength is reduced, characteristic aroma substances of the tobacco leaves can be effectively reserved while the requirements of a threshing and redrying process are met, and the threshing quality, the finished tobacco sheet quality and the industrial availability are further improved.
Further, step S11 specifically includes:
step S111, setting a corresponding number of ultrasonic humidifiers according to the volume of the tidal room;
the power supply of the ultrasonic humidifier is 220v/50hz, the power is 1500W, and the humidification quantity is 15 kg/h.
And step S112, increasing the environmental humidity of the tidal room to 75% -80% by adopting an ultrasonic humidifier.
The ultrasonic humidifier adopts high-frequency oscillation, and throws water away from the water surface through high-frequency resonance of the atomizing sheet to generate water mist.
Wherein, step S112 specifically includes:
step S1121, adopting a heating instrument to raise the temperature of the tidal room to 25-40 ℃;
when the humidity condition can not be achieved at normal temperature in winter, the temperature of the tidal room can be increased to 25-40 ℃ by adopting a heating instrument, for example, the temperature can be increased to 27 ℃, and then humidification is carried out after the temperature is increased.
And step S1122, increasing the ambient humidity of the tidal room to 75% -80% by adopting the ultrasonic humidifier.
Step S113, after the environmental humidity of the tidal room reaches a set requirement, closing the ultrasonic humidifier;
when the indoor humidity reaches the set requirement, the ultrasonic humidifier can be automatically closed.
And S114, putting the tobacco leaves into a dampening room for dampening for 1 day.
Step S12, after the pre-dampening is finished, manual leaf selection is carried out;
when the leaves are selected manually, the tobacco leaves are fully paved and cut off.
And step S13, after the manual leaf selection is finished, carrying out moisture regain treatment on the tobacco leaves in the moisture room.
The moisture regaining treatment aims to ensure that the tobacco leaves fully absorb moisture, the tobacco leaves are thoroughly regained, and the temperature in the subsequent leaf moistening link can be adjusted to be low after the tobacco leaves reach higher moisture content. Specifically, the tobacco leaves are put into the humidifying room again to be continuously humidified for 2 days, and the humidifying temperature of the subsequent links can be adjusted to be low after the tobacco leaves reach higher moisture content.
And step S2, carrying out ultrasonic atomization vacuum moisture regain treatment on the tobacco leaves.
Wherein, step S2 specifically includes:
step S21, detecting moisture of the tobacco leaves to be remoistened;
specifically, the moisture in the tobacco leaves to be remoistened is detected by utilizing a near infrared probe.
Step S22, carrying out vacuum treatment on tobacco leaves to be remoistened;
wherein, step S22 specifically includes:
s221, tightly closing a barrel door of the moisture-regaining barrel, and opening a vacuum valve to enable the moisture-regaining barrel of the moisture-regaining box to be communicated with a steam ejector;
step S222, utilizing steam with certain pressure as a working medium, enabling the volume of the steam to rapidly expand after passing through a nozzle of the steam ejector, and generating supersonic steam flow at the nozzle;
and step S223, introducing the gas in the moisture regaining cylinder into a steam jet mixing chamber of the steam jet device under the injection effect of the supersonic steam flow, and forming a low-pressure vacuum state in the moisture regaining cylinder.
Wherein the low-pressure vacuum state formed in the moisture-regaining cylinder is that the pressure value in the moisture-regaining cylinder is 0.05 standard atmosphere to 0.1 standard atmosphere.
And S23, performing ultrasonic atomization and moisture regain processing on the tobacco leaves to be subjected to moisture regain, and determining ultrasonic atomization and moisture regain processing with different intensities based on a moisture detection result.
Further, the determining of the ultrasonic atomization dampening treatment or the two ultrasonic atomization dampening treatments of different intensities based on the moisture detection result specifically includes:
if the moisture detection result is more than or equal to 15%, the intensity of ultrasonic atomization moisture regaining treatment is 0.1 standard atmospheric pressure;
on the contrary, if the moisture detection result is less than 15%, the intensity of ultrasonic atomization moisture regaining treatment is 0.05 standard atmospheric pressure.
In one embodiment, the near infrared probe is used for detecting the moisture content of the tobacco leaves to be remoistened in Yunnan Baoshan, the moisture content is 14 percent and is lower than 15 percent, and the intensity of ultrasonic atomization remoistening treatment is 0.05 standard atmospheric pressure.
Step S23 specifically includes:
s231, atomizing water into ultrafine particles with the particle size of 1-5 microns by using high-frequency oscillation of ultrasonic waves, and introducing the ultrafine particles into the wall of a vacuum box of a vacuum moisture regaining box by using negative pressure difference;
further, the step S2 further includes the step S24: and detecting the control index of the ultrasonic atomization and moisture regaining process.
After the tobacco leaves to be remoistened in Yunnan Baoshan are subjected to primary remoistening treatment, relevant control indexes are as follows through detection: the vacuum degree is 0.08 standard atmospheric pressure; the moisture content of the tobacco leaves is 17.8%; the core-spun temperature is 50 ℃; the transmittance is 99%; the quality index detection standard is met, and the next procedure can be carried out.
And step S3, carrying out atomization and wetting treatment on the tobacco leaves.
Step S3 specifically includes:
s31, before feeding, introducing hot air, and preheating the leaf moistening cylinder for 6-9 min;
further, the atomizing the moisture with the compressed air specifically includes:
s311, compressing the air into a stream of air flow by using a compressor, and ejecting the air flow from an air jet;
step S312, impacting the liquid in the atomizing cup by utilizing the airflow sprayed out from the air nozzle to gasify the liquid in the atomizing cup into atomized gas;
and step S313, humidifying the tobacco flakes by using the atomized gas.
Step S32, spraying atomized water onto the tobacco flakes after feeding, and performing at least two times of leaf moistening treatment, wherein in the first leaf moistening treatment, the temperature is 37-47 ℃, the humidity is 18-20%, the inclination angle of a leaf moistening cylinder is adjusted to be 3.5-4.5 degrees, and the leaf moistening time is 7-9 min; in the second leaf moistening treatment, the temperature is 40-50 ℃, the humidity is 19-21%, the inclination angle of the leaf moistening cylinder is adjusted to be 3.5-4.5 ℃, and the leaf moistening time is 7-9 min.
And step S4, performing threshing and air separation treatment on the tobacco leaves.
The tobacco leaf threshing and air separating treatment specifically comprises the following steps:
and sequentially beating the tobacco leaves by using at least four groups of beating equipment, wherein the rotating speed of a first beating roller is 690-710 r/min, the rotating speed of a second beating roller is 640-660 r/min, the rotating speed of a third beating roller is 650-670 r/min, and the rotating speed of a fourth beating roller is 850-860 r/min.
And step S5, carrying out microwave redrying and drying treatment on the tobacco leaves.
Wherein, step S5 specifically includes:
s51, performing microwave drying treatment on the tobacco leaves in a microwave heating and drying mode;
microwave heating and drying are a novel drying mode, the advantages of non-conductive heating peculiar to microwaves are utilized, microwave energy is directly radiated on materials through the microwaves, the microwave energy directly acts on medium molecules and is converted into heat energy, and the drying speed is very high; meanwhile, the thermal inertia of microwave drying is small, the drying temperature can be controlled, and the effect of low-temperature drying is achieved. Compared with the traditional drying mode, the drying device has the advantages of high production efficiency, energy conservation, maintenance of nutrient contents of materials and the like. In addition, the microwave drying also has good effect on loosening the materials, and the microwave drying can effectively improve the material structure and improve the loosening effect when being applied to the processing process. The microwave drying and redrying method can realize the rapid and low-temperature drying of tobacco leaf materials, is favorable for retaining the flavor substances of the tobacco leaves and improves the quality of the tobacco leaves after redrying.
Further, step S51 specifically includes: and (3) the tobacco leaves subjected to threshing and air separation enter a tunnel type microwave heating system, and microwave heating and drying are carried out on the tobacco leaves by adopting a microwave transmitting assembly of the microwave heating system, so that the tobacco stems and the tobacco leaves are quickly dehydrated under the action of microwave energy.
Specifically, in the microwave heating and drying process, the conveying speed of the tobacco leaves is set to be 0hz-50hz, the microwave frequency of the microwave heating system is set to be 1950MHz-2950MHz, and the microwave output power of the microwave heating system is set to be 65kW-75 kW.
In one embodiment, the tobacco leaves (with the water content of 18%) subjected to threshing and air separation enter a tunnel type microwave heating system for microwave heating and drying, and the tobacco stems and leaves of the tobacco leaves can be quickly dehydrated by using microwave energy. The tobacco leaf material conveying speed is 35hz, the microwave input power is 75KW, the microwave frequency is controlled to be about 2450MHz, and the moisture content of the tobacco leaves after microwave drying is 10%.
Step S52, after drying is finished, cooling the tobacco leaves in a cooling area;
the cooling treatment aims at cooling the tobacco leaves after microwave drying. Specifically, in the cooling treatment process, the temperature of the cooling zone is set to be 30-40 ℃, and the humidity of the cooling zone is set to be 55-65%. In one embodiment, the tobacco leaves after microwave drying enter a cooling zone for cooling. The temperature of the cold room is 40 ℃, and the humidity of the cold room is 60%. The temperature of the tobacco leaves after cooling is 45 ℃ and the moisture content is 10.4 percent.
And step S53, after the cooling is finished, carrying out moisture regain treatment on the tobacco leaves in a moisture regain area.
The moisture regaining treatment aims to increase the moisture of material leaves, finally enables the redried tobacco strips to meet the boxing requirement, is convenient to store and reduces the breakage. Specifically, in the moisture regaining treatment process, the moisture regaining area at least comprises a first moisture regaining area and a second moisture regaining area, the temperature of the first moisture regaining area is set to be 50-55 ℃, and the temperature of the second moisture regaining area is set to be 60-65 ℃. In one embodiment, the temperature parameters of the moisture regain area of the baking machine are set as follows: the first moisture regain area is 55 ℃, and the second moisture regain area is 60 ℃. The moisture content of the tobacco leaves after moisture regain is 12.5 percent, and the tobacco leaves meet the moisture standard of tobacco strips.
According to the redrying method for keeping the tobacco fragrance substances, provided by the embodiment of the invention, the moisture content can be effectively improved in the material preparation link by ultrasonic atomization and pre-moisture regaining, the subsequent moisture regaining strength is favorably reduced, and the fragrance loss is reduced; compared with the traditional high-temperature steam humidifying mode, the ultrasonic atomization vacuum dampening can effectively improve the humidifying effect by adopting lower temperature and higher humidity, effectively retain the characteristic aroma substances of the tobacco leaves and reduce the tobacco leaf breakage in the subsequent links; the microwave redrying drying mode can be used for realizing low-temperature redrying, the redrying time can be shortened, the loss of flavor substances is less, the flavor substances of the tobacco leaves are reserved to the greatest extent, the moisture loss of the leaves is more uniform, the shrinkage of the redried tobacco leaves is effectively reduced, and the redrying quality of the leaves is improved; therefore, through the steps of ultrasonic atomization pre-conditioning, ultrasonic atomization vacuum conditioning, atomization wetting, microwave drying and redrying and the like, the loss of flavor substances of the tobacco leaves is reduced while the redrying processing effect is effectively ensured, and the quality of the redried tobacco leaves can be effectively improved.
Thus, various embodiments of the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.
Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the foregoing examples are for purposes of illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that various changes may be made in the above embodiments or equivalents may be substituted for elements thereof without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.
Claims (10)
1. The redrying method for keeping the aroma substances of the tobacco leaves is characterized by comprising the following steps of:
carrying out ultrasonic atomization pre-conditioning treatment on tobacco leaves;
carrying out ultrasonic atomization vacuum moisture regaining treatment on the tobacco leaves;
carrying out atomization and moistening treatment on the tobacco leaves;
performing threshing and air separation treatment on the tobacco leaves;
and carrying out microwave redrying and drying treatment on the tobacco leaves.
2. The redrying method for keeping tobacco leaves fragrant substances according to claim 1, characterized in that the ultrasonic atomization pre-conditioning treatment is carried out on the tobacco leaves, and specifically comprises the following steps:
pre-dampening the tobacco leaves by adopting an ultrasonic humidifier in a dampening room;
after the pre-dampening is finished, manually selecting leaves;
and after manual leaf selection is finished, carrying out moisture regain treatment on the tobacco leaves in the moisture room.
3. The redrying method for keeping tobacco fragrance substances according to claim 2, characterized in that the pre-conditioning treatment is carried out on the tobacco leaves by adopting an ultrasonic humidifier in a conditioning room, and the pre-conditioning treatment specifically comprises the following steps:
setting a corresponding number of ultrasonic humidifiers according to the volume of the tidal room;
increasing the environmental humidity of the tidal room to 75-80% by adopting an ultrasonic humidifier;
after the environmental humidity of the tidal room reaches a set requirement, closing the ultrasonic humidifier; and putting the tobacco leaves into a dampening room for dampening for 1 day.
4. The redrying method for keeping tobacco leaves fragrant substances according to claim 1, characterized in that the ultrasonic atomization vacuum moisture regain treatment of the tobacco leaves specifically comprises:
carrying out moisture detection on tobacco leaves to be remoistened;
carrying out vacuum treatment on tobacco leaves to be remoistened;
and carrying out ultrasonic atomization and moisture regaining treatment on the tobacco leaves to be subjected to moisture regaining treatment, and determining ultrasonic atomization and moisture regaining treatment with different intensities based on a moisture detection result.
5. The redrying method for keeping tobacco fragrance substances according to claim 4, wherein the ultrasonic atomization and moisture regaining treatment of the tobacco to be moisture regained specifically comprises the following steps:
atomizing water into ultrafine particles with the particle size of 1-5 mu m by using high-frequency oscillation of ultrasonic waves, and introducing the ultrafine particles into the wall of a vacuum box of a vacuum moisture regaining box by using negative pressure difference.
6. The redrying method for keeping tobacco leaves fragrant substances according to claim 1, characterized in that the atomizing and moistening treatment is carried out on the tobacco leaves, and specifically comprises the following steps:
before feeding, introducing hot air, and preheating the leaf moistening cylinder for 6-9 min;
after feeding, spraying atomized water on the tobacco flakes, and carrying out at least two times of leaf moistening treatment, wherein in the first leaf moistening treatment, the temperature is 37-47 ℃, the humidity is 18-20%, the inclination angle of a leaf moistening cylinder is adjusted to be 3.5-4.5 degrees, and the leaf moistening time is 7-9 min; in the second leaf moistening treatment, the temperature is 40-50 ℃, the humidity is 19-21%, the inclination angle of the leaf moistening cylinder is adjusted to be 3.5-4.5 ℃, and the leaf moistening time is 7-9 min.
7. The redrying method of retaining tobacco leaf aroma substances according to claim 6, wherein preferably, the atomizing moisture with compressed air specifically comprises:
compressing air into a stream of air flow by a compressor and spraying out from an air nozzle;
the liquid in the atomizing cup is impacted by the airflow sprayed out of the air nozzle, so that the liquid in the atomizing cup is gasified into atomized gas;
and humidifying the tobacco flakes by utilizing the atomized gas.
8. The redrying method for keeping tobacco leaves fragrant substances according to claim 1, characterized in that the tobacco leaves are subjected to threshing and air separation treatment, and the method specifically comprises the following steps:
and sequentially beating the tobacco leaves by using at least four groups of beating equipment, wherein the rotating speed of a first beating roller is 690-710 r/min, the rotating speed of a second beating roller is 640-660 r/min, the rotating speed of a third beating roller is 650-670 r/min, and the rotating speed of a fourth beating roller is 850-860 r/min.
9. The redrying method for keeping tobacco leaves fragrant substances according to claim 1, characterized in that the microwave redrying and drying treatment of the tobacco leaves specifically comprises:
performing microwave drying treatment on the tobacco leaves in a microwave heating and drying mode;
after drying, cooling the tobacco leaves in a cooling area;
and after cooling, carrying out moisture regain treatment on the tobacco leaves in a moisture regain area.
10. The redrying method for keeping tobacco leaves fragrant substances according to claim 9, characterized in that the microwave drying treatment is performed on the tobacco leaves by adopting a microwave heating and drying mode, and specifically comprises the following steps:
and (3) the tobacco leaves subjected to threshing and air separation enter a tunnel type microwave heating system, and microwave heating and drying are carried out on the tobacco leaves by adopting a microwave transmitting assembly of the microwave heating system, so that the tobacco stems and the tobacco leaves are quickly dehydrated under the action of microwave energy.
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| CN113282050A (en) * | 2021-04-28 | 2021-08-20 | 云南烟叶复烤有限责任公司师宗复烤厂 | Leaf-wetting control method of leaf-wetting machine, storage medium, detection device and leaf-wetting system |
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| CN1659985A (en) * | 2004-12-30 | 2005-08-31 | 将军烟草集团有限公司 | Method for threshing ad redrying tobacco by using microwave technology |
| CN102524921A (en) * | 2012-01-19 | 2012-07-04 | 云南省烟草公司大理州公司 | Humidifying and regaining-moisture method of flue-cured tobacco leaves in bulk curing barn |
| CN104432457A (en) * | 2014-12-03 | 2015-03-25 | 四川烟叶复烤有限责任公司泸州复烤厂 | Improved continuous threshing and redrying processing craft of tobacco leaves |
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| CN1659985A (en) * | 2004-12-30 | 2005-08-31 | 将军烟草集团有限公司 | Method for threshing ad redrying tobacco by using microwave technology |
| CN102524921A (en) * | 2012-01-19 | 2012-07-04 | 云南省烟草公司大理州公司 | Humidifying and regaining-moisture method of flue-cured tobacco leaves in bulk curing barn |
| CN104432457A (en) * | 2014-12-03 | 2015-03-25 | 四川烟叶复烤有限责任公司泸州复烤厂 | Improved continuous threshing and redrying processing craft of tobacco leaves |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113282050A (en) * | 2021-04-28 | 2021-08-20 | 云南烟叶复烤有限责任公司师宗复烤厂 | Leaf-wetting control method of leaf-wetting machine, storage medium, detection device and leaf-wetting system |
| CN113282050B (en) * | 2021-04-28 | 2022-06-07 | 云南烟叶复烤有限责任公司师宗复烤厂 | Leaf-wetting control method of leaf-wetting machine, storage medium, detection device and leaf-wetting system |
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| CN112690486B (en) | 2022-06-21 |
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