CN111165857B - Tobacco flake storage process - Google Patents
Tobacco flake storage process Download PDFInfo
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- CN111165857B CN111165857B CN202010131586.0A CN202010131586A CN111165857B CN 111165857 B CN111165857 B CN 111165857B CN 202010131586 A CN202010131586 A CN 202010131586A CN 111165857 B CN111165857 B CN 111165857B
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- 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
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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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Abstract
The invention provides a tobacco flake storage process. Which comprises the following steps: 1) a pretreatment stage: air is modulated by adopting an air pipe to convey air with the temperature of 20-30 ℃ and the humidity of 70-80%, and the temperature of the tobacco flakes is reduced from 40-55 ℃ at the outlet of the tobacco flake feeding procedure to 25-30 ℃ at the inlet of the tobacco leaf storage room in the process of belt conveying; 2) and (3) leaf storage stage: the air temperature of the leaf storage room is 25-28 ℃, the relative humidity of the air is 60-65%, and the leaf storage time is 2-4 hours. The tobacco leaves prepared by the leaf storage process are bright in leaves, full and uniform in color and orange in color, and the dry feeling and cleanliness of cigarettes are improved to a certain extent. Compared with the traditional process, the leaf storage process has the advantages that the energy consumption is reduced by 20-30%, and the economic benefit is obvious.
Description
Technical Field
The invention relates to the field of cigarette production and processing, in particular to a tobacco flake storage process.
Background
The leaf storage is a procedure for adjusting and balancing the processing time and the production capacity between the tobacco flake processing working section and the tobacco flake processing working section in the cigarette cut tobacco production, and has the functions of enabling tobacco flakes to fully absorb feed liquid, balancing the moisture content and the temperature of the tobacco flakes and uniformly mixing the tobacco flakes or modules in a formula.
The leaf storage equipment is mainly divided into a storage cabinet and a box-type leaf storage system, and the leaf storage equipment is arranged in a leaf storage room with environmental temperature and humidity control. The box-type leaf storage system can be sealed by a cover, the upper surface of the leaf storage cabinet is not sealed by the cover generally, and the upper surface of the tobacco leaf stack is contacted with the ambient air of the leaf storage room. In order to ensure the moisture content and the temperature of the whole batch of tobacco sheets to be uniform, the storage cabinet type leaf storage has higher requirements on the temperature and humidity control of the leaf storage room environment. The storage time of the tobacco flakes is determined according to the quality requirement of the product, and the maximum storage time is limited to prevent the quality of the tobacco flakes from being reduced.
The color of the tobacco leaves is an important index for evaluating the appearance quality of the tobacco leaves, is an external reflection of the internal quality of the tobacco leaves, and is an important index concerned by consumers. In the tobacco flake storage procedure, the tobacco flakes are stored for a certain time under certain temperature and humidity conditions, and the color of the tobacco flakes can change to a certain degree.
Disclosure of Invention
The traditional temperature and humidity of the leaf storage room adopt the control requirements that the air temperature is 35-40 ℃ and the air relative humidity is 70%. The water content of the tobacco flakes entering the tobacco leaf storage room is 18-21%, the temperature is 40-55 ℃, and the leaf storage height of the leaf storage cabinet is not more than 1300 mm. After the tobacco flakes are stored in the tobacco leaf storage room for a certain time, the difference between the temperature and humidity of the tobacco flakes on the surface layer and the temperature and humidity of the tobacco flakes on the inner layer is increased, and the complete and sufficient balance of the tobacco flakes through long-time leaf storage is difficult. The tobacco flakes with obvious temperature and humidity difference between the surface layer and the inner layer have poor uniformity in batch processing in the subsequent process.
During the leaf storage process, the free amino acid and reducing sugar in the tobacco flakes generate brown reaction. As the storage time increased, the content of the browning reaction product increased and the color of the leaf became darker. Meanwhile, in order to maintain a stable high-temperature high-humidity environment in the leaf storage room, the energy consumption of the air conditioning system is high. In order to overcome the defects in the traditional process, a new process treatment method which has low energy consumption, can not only deepen the color of the tobacco flakes after storage but also reduce the quality of the tobacco flakes after long-time storage needs to be found out.
In view of the above-mentioned disadvantages of the prior art, it is an object of the present invention to provide a tobacco sheet storing process, which solves the problems of the prior art. In order to achieve the above objects and other related objects, the present invention provides a tobacco sheet storing process, comprising the steps of:
1) a pretreatment stage: air is modulated by adopting an air pipe to convey air with the temperature of 20-30 ℃ and the humidity of 70-80%, and the temperature of the tobacco flakes is reduced from 40-55 ℃ at the outlet of the tobacco flake feeding procedure to 25-30 ℃ at the inlet of the tobacco leaf storage room in the process of belt conveying;
2) and (3) leaf storage stage: the environmental temperature of the leaf storage is 25-28 ℃, the relative humidity is 60-65%, and the leaf storage time is 2-4 hours.
Preferably, the air conveyed by the air pipe in the step 1 is preferably modulated by return air exhausted by ventilation of an air conditioning system of the leaf storage room, and the air supply amount is every 100 meters of conveying line/5000 cubic meters/hour; after being pressurized by the booster fan, the tail end air supply pipe has the function of a static pressure pipe, the jet flow of the air conditioning air with the temperature and humidity adjusting function covers the conveying belt material through the pre-punched air holes, and the tail end air speed of the air conditioning air in contact with the static material is 0.25-0.5 m/s.
More preferably, the temperature difference between the tobacco leaf temperature at the inlet of the leaf storage room in the step 1 and the environmental temperature of the leaf storage room in the step 2 is less than or equal to 3 ℃. The lower temperature difference aims to shorten the energy consumption of an air conditioner for cooling the tobacco leaves in the tobacco leaf storage room.
The tobacco leaves prepared by the leaf storage process are bright in leaves, full and uniform in color and orange in color, and the dry feeling and cleanliness of cigarettes are improved to a certain extent. Compared with the traditional process, the leaf storage process has the advantages that the energy consumption is reduced by 20-30%, and the economic benefit is obvious.
Drawings
FIG. 1: tobacco flake before storing leaves
FIG. 2: (26 ℃, 63%, 2h) after storage
FIG. 3: (35 ℃, 72%, 4h) after storage
Detailed Description
The embodiments of the present invention are described below with specific examples, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
The inventor of the invention adopts lightness and color difference to represent the color change of the tobacco flake. The brightness refers to the brightness of a sample detected by an instrument and can represent the luster or brightness of the tobacco leaves or the tobacco shreds; the color difference refers to the difference of the chromaticity of the sample and the control sample, and represents the integral difference of the color and the luster of the tobacco leaves or the cut tobacco.
The color difference was calculated according to CIE (international association for illumination) 1976L a b standard color difference formula Δ E ab [ [ Δ L2 + [ Δ a ] 2+ [ Δ b ]1/2, where Δ E represents the total color difference; Δ L denotes the lightness difference of the sample from the standard sample; Δ a denotes the red/green difference of the sample; Δ b denotes the yellow/blue difference of the sample. According to the calculation formula, the color of the comparison sample is taken as a standard, the good Delta E ab of the test sample compared with the comparison sample is a positive value, and the poor Delta E ab of the comparison sample is a negative value.
Leaf samples were equilibrated for 24h in a constant temperature and humidity cabinet at 22 ℃ and 65% relative humidity prior to testing. Using a color difference meter, a colorimetric aperture L (25.4mm) was selected and the instrument was calibrated using a black and white calibration plate under conditions of D65/10 (light source and measurement angle) and SPIN (measurement including specular component). Selecting a sample as a standard sample, taking the chromaticity of the standard sample as a reference value, and then carrying out chromaticity detection on the sample to obtain lightness and color difference detection results. Taking 10 blades from each sample, flattening the front side of each blade upwards, detecting five points on each blade, and calculating the average value of the 10 blades to obtain the lightness and color difference results of the sample.
The flue-cured tobacco flakes adopted in the following examples are C3F flakes purchased from cigarette industry llc in Guangxi province in 2017 Chongqing province.
Example 1
The temperature of the tobacco flakes entering the tobacco leaf storage room is reduced to 28 ℃, the water content is 18.5%, the air temperature in the tobacco leaf storage room is 26 ℃, the air relative humidity is 63%, and the storage time of the tobacco flakes is 4 hours. The lightness and color difference before and after leaf storage of the tobacco sheets were measured, and the measurement results are shown in Table 1.
Example 2
The temperature of the tobacco flakes entering the tobacco leaf storage room is reduced to 28 ℃, the water content is 18.5%, the air temperature in the tobacco leaf storage room is 30 ℃, the relative humidity of the air is 68%, and the storage time of the tobacco flakes is 4 hours. The lightness and color difference before and after leaf storage of the tobacco sheets were measured, and the measurement results are shown in Table 1.
Example 3
The temperature of the tobacco flakes entering the tobacco leaf storage room is reduced to 28 ℃, the moisture content is 18.5%, the air temperature in the tobacco leaf storage room is 35 ℃, the relative humidity of the air is 72%, and the storage time of the tobacco flakes is 4 hours. The lightness and color difference before and after leaf storage of the tobacco sheets were measured, and the measurement results are shown in Table 1.
Example 4
The temperature of the tobacco flakes entering the tobacco leaf storage room is reduced to 28 ℃, the water content is 18.5%, the air temperature in the tobacco leaf storage room is 26 ℃, the relative humidity of the air is 63%, and the storage time of the tobacco flakes is 1 h. The lightness and color difference before and after leaf storage of the tobacco sheets were measured, and the measurement results are shown in Table 1.
Example 5
The temperature of the tobacco flakes entering the tobacco leaf storage room is reduced to 28 ℃, the water content is 18.5%, the air temperature in the tobacco leaf storage room is 26 ℃, the relative humidity of the air is 63%, and the storage time of the tobacco flakes is 2 hours. The lightness and color difference before and after leaf storage of the tobacco sheets were measured, and the measurement results are shown in Table 1.
Example 6
The temperature of the tobacco flakes entering the tobacco leaf storage room is reduced to 28 ℃, the water content is 18.5%, the air temperature in the tobacco leaf storage room is 26 ℃, the air relative humidity is 63%, and the storage time of the tobacco flakes is 4 hours. The lightness and color difference before and after leaf storage of the tobacco sheets were measured, and the measurement results are shown in Table 1.
Example 7
The temperature of the tobacco flakes entering the tobacco leaf storage room is reduced to 28 ℃, the water content is 18.5%, the air temperature in the tobacco leaf storage room is 26 ℃, the air relative humidity is 63%, and the storage time of the tobacco flakes is 8 hours. The lightness and color difference before and after leaf storage of the tobacco sheets were measured, and the measurement results are shown in Table 1.
TABLE 1
As can be seen from Table 1, the lightness and color difference of the tobacco flakes are less after the leaves are stored for 2 hours according to the control scheme (26 ℃, 63%) of the ambient air temperature and humidity of the leaf storage room provided by the invention; the color of the leaves is gradually reduced along with the prolonging of the storage time, the color of the leaves is kept best within 2h, the storage time is controlled within 2-4h in the actual production in consideration of the problems of feed liquid absorption, production organization and the like, and the color of the leaves is not obviously changed (detailed in figures 1-3).
Example 8
And (3) evaluating the sample before storing the leaves, wherein the evaluation group consists of 9 persons and evaluates the aroma characteristics, the smoke characteristics and the mouthfeel characteristics from the aspect of 3 aspects, wherein the aroma characteristics comprise aroma quality, aroma quantity, fullness and miscellaneous gas, the smoke characteristics comprise concentration, strength and fineness, and the mouthfeel characteristics comprise irritation, dryness and cleanness. And taking the sample before leaf storage as a control, and performing the test of the sample under different leaf storage conditions by adopting a comparative test method. There was no change score of 0, a slight change score of 0.5, a change evident score of 1.0, which was better than the control and worse than the control. The score of the smoke panel for each example is shown in Table 2.
As can be seen from Table 2, after the tobacco leaves are stored by using the new process, the dry feeling and the cleanliness of the tobacco leaves are improved to a certain extent, and the smoking evaluation result is not changed obviously along with the increase of the tobacco leaf storage time.
The error photo comparison and sensory evaluation comparison of the tobacco leaves after the tobacco leaves are stored by different leaf storage process methods are described as follows: the aspect of the appearance quality of the tobacco leaves stored by the leaf storage process of the invention with low temperature and low humidity is as follows: bright leaves, full and uniform color and orange color; sensory quality aspect: the dry feeling and the cleanliness of the cigarettes are improved to a certain extent, and the smoking result is not obviously changed along with the increase of the leaf storage time. The requirements set for the quality target which the inventors of the present invention expect to address are met.
In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not to be construed as limiting the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes be made by those skilled in the art without departing from the spirit and technical spirit of the present invention, and the scope of the present invention is defined by the appended claims.
Claims (1)
1. The application of a tobacco sheet storing process in the field of cigarette production comprises the following steps:
1) a pretreatment stage: air is modulated by adopting an air pipe to convey air with the temperature of 20-30 ℃ and the humidity of 70-80%, and the temperature of the tobacco flakes is reduced from 40-55 ℃ at the outlet of the tobacco flake feeding procedure to 25-30 ℃ at the inlet of the tobacco leaf storage room in the process of belt conveying;
2) and (3) leaf storage stage: the environmental temperature of the leaf storage is 25-28 ℃, the relative humidity is 60-65%, and the leaf storage time is 2-4 hours;
the modulated air conveyed by the air pipe in the step 1) is modulated by return air discharged by ventilation of an air conditioning system of the leaf storage room, and the air supply amount is per 100 meters of conveying line/5000 cubic meters/hour; after being pressurized by the booster fan, the tail end blast pipe has the function of a static pressure pipe, the jet flow of the air-conditioning air with the temperature and humidity adjusting function covers the conveying belt material through the pre-punched air hole, and the tail end air speed in contact with the static material is 0.25-0.5 m/s;
the temperature difference between the tobacco leaf temperature at the inlet of the leaf storage room in the step 1) and the environmental temperature of the leaf storage room in the step 2) is less than or equal to 3 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010131586.0A CN111165857B (en) | 2020-02-28 | 2020-02-28 | Tobacco flake storage process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010131586.0A CN111165857B (en) | 2020-02-28 | 2020-02-28 | Tobacco flake storage process |
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| CN111165857A CN111165857A (en) | 2020-05-19 |
| CN111165857B true CN111165857B (en) | 2022-04-19 |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111685358B (en) * | 2020-06-22 | 2022-09-30 | 广西中烟工业有限责任公司 | Control system and method for single cigarette cabinet leaf storage process |
| CN111728258B (en) * | 2020-07-13 | 2022-05-03 | 广西中烟工业有限责任公司 | Pretreatment process for shredding tobacco flakes |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2594747Y (en) * | 2002-12-26 | 2003-12-24 | 韩贵廷 | High-efficiency energy-saving tobacco drier |
| EP1759601B1 (en) * | 2005-08-31 | 2010-04-28 | International Tobacco Machinery Poland Sp. z o.o. | Method and device for thermal processing of loose materials, particulary organic plant materials |
| CN103005667A (en) * | 2011-09-28 | 2013-04-03 | 广西中烟工业有限责任公司 | Device and method for improving cigarette shredding quality |
| CN103070464A (en) * | 2013-01-23 | 2013-05-01 | 红云红河烟草(集团)有限责任公司 | Storage method of tobacco after moisture regaining and charging |
| CN105707966A (en) * | 2016-03-28 | 2016-06-29 | 中国烟草总公司广东省公司 | Tobacco curing house realizing dehumidification cold air outdoor warming circulation |
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2020
- 2020-02-28 CN CN202010131586.0A patent/CN111165857B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2594747Y (en) * | 2002-12-26 | 2003-12-24 | 韩贵廷 | High-efficiency energy-saving tobacco drier |
| EP1759601B1 (en) * | 2005-08-31 | 2010-04-28 | International Tobacco Machinery Poland Sp. z o.o. | Method and device for thermal processing of loose materials, particulary organic plant materials |
| CN103005667A (en) * | 2011-09-28 | 2013-04-03 | 广西中烟工业有限责任公司 | Device and method for improving cigarette shredding quality |
| CN103070464A (en) * | 2013-01-23 | 2013-05-01 | 红云红河烟草(集团)有限责任公司 | Storage method of tobacco after moisture regaining and charging |
| CN105707966A (en) * | 2016-03-28 | 2016-06-29 | 中国烟草总公司广东省公司 | Tobacco curing house realizing dehumidification cold air outdoor warming circulation |
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