CN108308691A - A method of promoting tobacco scrap prodn quality stability - Google Patents
A method of promoting tobacco scrap prodn quality stability Download PDFInfo
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- CN108308691A CN108308691A CN201810053044.9A CN201810053044A CN108308691A CN 108308691 A CN108308691 A CN 108308691A CN 201810053044 A CN201810053044 A CN 201810053044A CN 108308691 A CN108308691 A CN 108308691A
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- moisture
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- drying
- leaf
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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
- A24B3/12—Steaming, curing, or flavouring tobacco
-
- 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
- A24B3/08—Blending tobacco
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- Manufacture Of Tobacco Products (AREA)
Abstract
The present invention provides a kind of method promoting tobacco scrap prodn quality stability, specific method is：Feed intake → primary moisture regain → prewired storage leaf → secondary moisture regain → mixed with leaf storage leaf → chopping → moisture regulation → baking silk → and match → flavoring → storage, pass through the regulation process that moisturizes after chopping, solve the problems, such as due to process route is longer and material process moisture content by ambient temperature and humidity be affected and caused by batch between dry silk entering water rate fluctuate it is notable, drying process supplied materials moisture is set to be stabilized, ensure into stability between the batch of drying process material moisture, tobacco-dryer exit material water ratio is set to meet processing request, to realize the processing intensity of cut tobacco drying and the stabilization of dehydrating amount between batch, the stability for drying silk outlet material aesthetic quality is ensured.The present invention have many advantages, such as compared with other methods process reform is small, investment for trnasforming urban land is small, it is energy-saving, be not required to simultaneously newly-built or reconstruct workshop.
Description
Technical field
The invention belongs to cigarette primary processing manufacture fields, and in particular to a method of promoting tobacco scrap prodn quality stability.
Background technology
Existing tobacco scrap prodn process is：Pipe tobacco through feeding intake → primary moisture regain → prewired storage leaf → secondary gets damp again →
It is mixed with → flavoring → storage completion Primary Processing with leaf storage leaf → chopping → warming and humidifying → baking silk →.It is raw after chopping is completed
Silk enters HT, by the control of steam pressure, the moisture and temperature for drying silk entrance material is improved, to improve cut tobacco filling capacity
With resist processing, it is allowed to meet the processing request of drying process.However, baking silk enters between existing technology cannot achieve different batches
The stabilization of mouth tobacco scrap prodn supplied materials moisture.
Since the material moisture for drying silk entrance process between batch is unstable, to ensure to dry silk outlet material with stable aqueous
Rate, the dehydrating amount of cut tobacco drying and processing intensity will produce fluctuation between each batch, cause to dry the pipe tobacco that silk exports between each batch
Aesthetic quality is inconsistent, cannot effectively control the stability of throwing quality.
There are mainly two types of thinkings for current solution：
First, ensureing the material moisture of tobacco-dryer exit.By studying drying process, drying process itself is carried out
The optimization of parameter (aperture of humidity discharging air door and hot wind air door, hot blast temperature, barrel temperature etc.) regulation and control sequence and regulation and control amount, to
It improves and dries silk outlet material Moisture stability；Though being guaranteed the disadvantage is that drying silk outlet material water ratio, due to difference batch
Secondary drying process need to be directed to the supplied materials matching processing intensity of different moisture content, it is difficult to ensure between cut tobacco drying batch material dewatering amount and
The stability of intensity is processed, and the change for processing intensity leads to the change that silk materials aesthetic quality is dried between criticizing, therefore whole throwing
Quality cannot be controlled.
As Chinese patent CN106418633A discloses a kind of cigarette primary processing machining parameters optimization and device, this method packet
It includes：Loosening and gaining moisture punishment in advance is carried out using different loosening and gaining moisture hot blast temperatures；According to the loose effect of smoked sheet after loosening and gaining moisture and
Moisture content stability determines optimal loosening and gaining moisture hot blast temperature a；Using a as current loosening and gaining moisture hot blast temperature, using different
Charging hot blast temperature carries out charging punishment in advance；According to the feed liquid utilization rate and feeding homogeneity of smoked sheet after charging, optimal charging is determined
Hot blast temperature b；Using a as current loosening and gaining moisture hot blast temperature, using b as current charging hot blast temperature, with dry cylinder wall temperature
Setting value is dried and dehydrated；Sensory evaluating smoking's result of pipe tobacco after drying optimizes tobacco shreds drying processing intensity, with
Determine optimal throwing machined parameters combination.This method do not realize batch between dry processing intensity stabilization, it is dry between can not ensureing batch
The aesthetic quality of outlet material.
If Chinese patent CN101356992A discloses a kind of downstream type tobacco-dryer exit tobacco-shred water control method, propose
In the case where meeting the target for drying silk outlet moisture in cut tobacco, adjusts and control sequence is：Humidity discharging air door and hot wind throttle opening, hot wind temperature
Degree, barrel temperature.Drying process processing intensity, the material aesthetic quality of outlet will produce fluctuation between this method has adjusted batch.
If Chinese patent CN102106597A discloses a kind of control method and device of stable cylinder cut tobacco dryer humidity discharging amount,
Humidity discharging amount in this method energy stability contorting cut tobacco drying realizes cut-tobacco drier stable operation under the Parameter Conditions of optimization, thus
Under the premise of ensureing that the physical qualities such as outlet moisture content of cut tobaccos reach requirement, aesthetic quality also keeps stable.It is only protected in the method
The stabilization for drying silk humidity discharging amount is hindered, but different due to drying silk supplied materials moisture between criticizing, drying process machined parameters are inconsistent, dry
Silk outlet aesthetic quality's stability is difficult to realize.
As Chinese patent CN203314089U discloses a kind of cut tobacco roller drying moisture content of outlet control based on humidity discharging humidity
System processed, controller include the first PID controller, the second PID controller and feedforward compensation controller, controller unit, pneumatic
Actuator, air door and cut-tobacco drier are sequentially connected, and cut tobacco moisture is exported by PID real-time control cut-tobacco drier roller dryings.
If Chinese patent CN102871214A discloses a kind of tobacco-dryer exit humidity control method based on simulation and forecast,
For tobacco drying machine, complicated state change and the multifarious feature of production technology pattern, structure are based on intelligence during the work time
The cut-tobacco drier Intelligence integrated optimization control system of energy prediction model and artificial intelligence operation mode, realizes the synthesis of cut tobacco drying most
Optimization and automation.
If Chinese patent CN102987538A discloses a kind of baking silk humidity control method, by being arranged in cut-tobacco drier entrance
Moisture Meter measure entrance moisture, and using feed-forward control algorithm obtain adjust entrance flow of tobacco the first parameter, then send out
It send to belted electronic balance, adjusting entrance flow of tobacco is obtained by pid control algorithm to measure moisture and moisture content of outlet setting value
The second parameter, simultaneously or successively responded in conjunction with two parameters, entrance flow of tobacco be adjusted.This method equally has ignored
The fluctuation of drying process material dewatering amount and processing intensity between batch.
If Chinese patent CN102488308A discloses a kind of advanced coordinated control system for moisture in cut tobacco dryer, for baking silk cylinder
The control of moisture content of outlet proposes that " head control system+middle part control system+rear stage control system " is automatic by three sections of moisture
Control combines, and avoids humidity discharging excessive or too small and in influence baking silk cylinder relative humidity.
As Chinese patent CN103202532A discloses a kind of cut tobacco roller drying moisture content of outlet control based on humidity discharging humidity
Method and system processed, the adjusting that the humidity H of humidity discharging wind is set as carrying out cut tobacco roller drying moisture content of outlet PID control become
Amount sets humidity discharging wind moisture adjustion domain, and cut tobacco moisture is exported by PID real-time control cut-tobacco drier roller dryings, is ensureing cut tobacco
On the basis of inherent quality is stablized, accuracy, the stability of the control of cut tobacco moisture content of outlet can be improved.
If Chinese patent CN103222673A discloses a kind of moisture control method for airflow cut-tobacco drier, detected with Moisture Meter
Moisture content of outlet, with high Temperature Humidity Sensor characterization processes gas relative humidity；When air current type tobacco shred drying machine zero load, when 20% technique gas phase
To humidity 25%, original simulation water setting value is kept, when process gas relative humidity<20% or process gas relative humidity>25%,
Simulation water setting value is increased or reduced respectively；Air current type tobacco shred drying machine load when, moisture content of outlet compared with setting moisture value, meanwhile,
Process gas temperature is compared with set temperature value, and PID controller is according to two-part difference come adjusting control water loading capacity.
As Chinese patent CN205962799U and Chinese patent CN106036975A disclose a kind of stable moisture in cut tobacco dryer
Device reduces drying by being suitably modified drying gas flow temperature mode to material head using ladder water supply way and at drying initial stage
The fluctuation of system and hysteresis quality reduce the phenomenon that material head moisture is leapt high, and have ensured the consistency of tobacco material moisture.
Second is that ensureing the moisture content of cut-tobacco drier entrance material.Using moisture content of outlet as target, intensity is processed to drying by change
Silk machine supplied materials requires according to post-production in advance, is ensured with this and dries silk outlet material moisture, improves tobacco scrap prodn mistake
The quality stability of journey.The disadvantage is that the change of processing intensity can make baking silk outlet material aesthetic quality generate fluctuation, while one
A little methods have ignored the contingency of environment, and no operability and applicability, cost are excessively high.
Such as《Throwing moisture seasonality control model research based on fixed dehydrating amount》It is proposed that drying silk dehydrating amount is in one text
When 5.60%, aesthetic quality's total score highest；For the variation of fiber tow production process moisture there are apparent Seasonal Analysis, spring and summer is aobvious
It writes and exports to raw silk, pure silk to silk union higher than autumn and winter, especially leaves moisting；In fixed dehydrating amount, spring and summer pure silk moisture
Center controlling value is 13.67%, raw silk 19.27%, leaves moisting 20.47%；Autumn and winter pure silk moisture center controlling value is
13.41%, raw silk 19.01%, leaves moisting 19.84%.Change the contingency that method has ignored environment, seasonal moisture variation
Rule does not only have scientific guidance to daily production.
Silk emulation mode and system are dried as Chinese patent CN104680879A discloses one and grows tobacco, emulation humiture, cigarette
Complicated control system is divided into relatively independent module by silk temperature, moisture in cut tobacco, realizes the emulation of tobacco cut-tobacco drier.The party
Law technology is complicated, limited by practical.
Such as《Influence of the ambient temperature and humidity to tobacco pigment》It proposes to establish real-time planar monitoring application system in one text,
The real-time monitoring system that ambient temperature and humidity is respectively deployed to ensure effective monitoring and control of illegal activities a little is established on layout in IFIX systems, convenient for monitoring Temperature and Humidity Control
Accordance, while data actuation foundation before by observation, can intuitively instruct loose pieces moisture regain water addition ratio example adjustment.With
Ensure the stabilization for drying silk entering water rate and finished product moisture content.The disadvantages of this method is that moisture regain also has longer technique road after the completion
Line, and the moisture evaporation of different leaf group ingredients is different, and influenced by seasonal humiture, it is difficult to ensure to dry silk entrance material
Moisture content does not have practicability.
If Chinese patent CN106370554A discloses a kind of tobacco moisture percentage detection and online Moisture Meter monitoring method, make
Off-line data is changed online, convenient for instructing moisture regulation, to ensure tobacco scrap prodn quality.The disadvantage is that not determining specific moisture
Check point, premature moisture regulation, which can not ensure, dries silk supplied materials moisture.
As Chinese patent CN103202528A discloses a kind of cut tobacco drying of the feedforward based on HT water compensations and feedback
Control method and system change control method by adjusting HT damping machine steam flows, and supplied materials cut tobacco moisture fluctuates before compensating HT, most
Big degree keeps drum inlet cut tobacco moisture stabilization, reduces influence of the supplied materials moisture upset to roller drying process, keeps drying
Technological parameter is stablized, and process processing quality stability is improved.By at drum inlet cut tobacco moisture and cut tobacco flow pass through feedforward
It is added to feedback control system, improves the accuracy of roller drying process moisture regulation.Chinese patent CN203243922 is disclosed
A kind of cut tobacco drying control system of feedforward and feedback based on HT water compensations, by adjusting HT damping machine steam flows,
Supplied materials cut tobacco moisture fluctuates before compensating HT, maintains drum inlet cut tobacco moisture stabilization, and it is dry to roller to reduce supplied materials moisture upset
The influence of dry process.Method disclosed in this method and a upper patent be all by adjusting HT intensity come ensure enter cut-tobacco drier
Material moisture, but the change of HT intensity results in material aesthetic quality before drying silk, makes the sense organ of tobacco-dryer exit material between criticizing
Quality generates variation, while being unable to bidirectional modulation.
The method as disclosed in Chinese patent 200610140232.2 proposes, the stem made is cased and is capped, subsequently into
It stores in the chamber type leaves-storing library of conveyer form or stereo garage form constant temperature and humidity, when in use uncapping, after mould turnover feeding, leads to
It crosses quantitatively control process to mix and be fitted in cut tobacco, so that needs is mixed the material moisture matched and stablize, guarantee is mixed with precision；The disadvantage is that investment
Amount and scrap build quantities are larger, while needing transform plant or newly constructing the factory buildings, and the industrial warehouse energy of constant temperature and humidity
Consumption is high.Further, since different trade mark hygroscopicity are different, the storage environment humiture needed also differs, so constant temperature and humidity
There are limitations for the use of industrial warehouse.
Invention content
It is existing in view of the above technology that " drying process moisture meets the requirements but materiel machining strength fluctuation is big between batch, leads
The deficiency of material aesthetic quality fluctuation between cause batch ", the purpose of the present invention is increase a kind of moisture regulation work after chopping process
Sequence makes the moisture content of supplied materials meet drying process processing request tobacco scrap prodn material is humidified or be dried, material between batch
It dries silk link dehydrating amount to be stablized, the fluctuation of drying process processing intensity between significant decrease different batches, between guarantee batch
Method of the baking silk outlet material quality stability to control tobacco scrap prodn quality.
Technical scheme is as follows：
A method of tobacco scrap prodn quality stability is promoted, following steps are specifically included：
1) it presses the prior art and carries out tobacco scrap prodn, feed intake → primary moisture regain → prewired storage leaf → secondary moisture regain → is with leaf storage leaf
→ chopping；
2) material after chopping passes through moisture regulation process, increases material water ratio or reduces material water ratio, reaches phase
Stablize with trade mark material moisture；
3) subsequently into drying process, all identical trade mark products carry out baking silk according to identical machined parameters, realized
The stability control of Cheng Zhiliang；
4) through mixing by prior art material after baking silk and match, flavoring, store silk, cigarette manufacture is provided and is used.
Further, increase in the step 2) material water ratio be with temperature≤40 DEG C and the air of humidity >=95% or
The atomized water that grain size is 10 μm carries out humidification process to material.
Further, it is the air pair with temperature≤40 DEG C and humidity≤40% that material water ratio is reduced in the step 2)
Processing is dried in material.
The present invention realizes as follows：
(1) it presses the prior art and carries out tobacco scrap prodn, feed intake → primary moisture regain → prewired storage leaf → secondary moisture regain → is with leaf storage
Leaf → chopping；By the prior art, after tobacco leaf feeds intake, feeding is quantified to charging link is surpassed back, in prewired storage leaf by vacuum conditioning
Ordering and casing is carried out after complete, is fully absorbed feed liquid in tobacco leaf with leaf leaf storing cabinet and is carried out being fed into warming and humidifying after water balance and sets
Standby, material is sent to filament cutter after foreign body eliminating；
(2) moisture regulation process is used after cutting silk, completes the regulation and control of material moisture before baking silk；Realize chopping outlet material
Humidification or drying, identical material water ratio ensure that HT steam pressures, material HT processing intensity is identical between making batch；
(3) pass through moisture regulation, appropriateness increases and decreases moisture in cut tobacco, improves pipe tobacco physics resist processing, is allowed to meet and dries silk work
The requirement of sequence supplied materials, into drying process after material dewatering amount is identical between batch, make identical trade mark product can be according to identical processing
Parameter carries out baking silk, significantly improves baking silk processing strength stability between batch, realizes the stability control of procedure quality, improve cigarette
Silk aesthetic quality, is finally reached the purpose of control tobacco scrap prodn quality.
The method of the present invention is acquired compared with prior art to be had the beneficial effect that：
(1) process reform is small, investment for trnasforming urban land is small, energy-saving while being not required to newly-built or reconstructing workshop, and operation is convenient and ties up
Protect material moisture stability control at low cost, research emphasis to be placed on after chopping and entered before drying process.
(2) compared to because the pipe tobacco water addition ratio example regulation and control that Various Seasonal ambient temperature and humidity difference carries out, this method avoid
The contingency of seasonal humiture changing rule, more time-efficient and flexibility keep moisture regulation and real-time pipe tobacco aqueous
Rate variation more matches, and improves material moisture stability between batch.
(3) compared to the material moisture adjusting method of HT processing intensity adjustment and drying process parameter optimization, this method is logical
Cross the supplement of material water ratio or reduction after chopping, do not change HT processing intensity and dry silk process intensity under the premise of, ensure
Material moisture into drying process is stablized, and like products is allow to take identical processing intensity, and baking silk goes out between having ensured batch
The aesthetic quality of mouth material, makes tobacco scrap prodn quality be controlled.
The present invention with " feed intake → primary moisture regain → prewired storage leaf → secondary moisture regain → is with leaf storage leaf → chopping → moisture regulation
→ warming and humidifying → baking silk → is mixed with → flavoring → storage " " feed intake → primary moisture regain → prewired storage leaf → bis- instead of traditional
The processing technology of secondary moisture regain → mixed with → flavoring → storage with leaf storage leaf → chopping → warming and humidifying → baking silk → ", object after chopping
Material moisture increases or decreases the moisture content that ensure that and dry silk supplied materials, to reduce the fluctuation for processing intensity between different batches, surely
The aesthetic quality for having determined pipe tobacco improves the total quality of tobacco scrap prodn.
Description of the drawings
Fig. 1 is the control process flow diagram of the promotion tobacco scrap prodn quality stability of the present invention.
Specific implementation mode
Technical scheme of the present invention is described in further details with reference to specific embodiment, but the present invention is not limited to
Following technical scheme.
Embodiment
(1) after tobacco leaf feeds intake, feeding is quantified to charging link is surpassed back by vacuum conditioning, is moistened after prewired storage leaf is complete
Leaf feeds, and is fed into HT, filament cutter after tobacco leaf fully absorbs feed liquid and carries out water balance with leaf leaf storing cabinet, completes before drying silk
Manufacturing procedure.
(2) regulation and control for completing to dry material moisture before silk after chopping process using moisture regulation, by filament cutter and heating
Moisturize adjusting device on production line between humidifying equipment, to realize that humidification or the drying of chopping entrance pipe tobacco, appropriateness increase
Add material water ratio or reduce material water ratio, improve pipe tobacco physics resist processing, is conducive to follow-up baking silk link, while also being promoted
The stability of HT processing intensity, the stabilization that silk outlet material aesthetic quality is dried for after provide safeguard.Wherein, by with temperature
It is aqueous to increase material that the air or grain size of≤40 DEG C and humidity >=95% for 10 μm of atomized water carry out humidification process to material
Rate；Material water ratio is reduced by the way that processing is dried to material with the air of temperature≤40 DEG C and humidity≤40%.
(3) after moisture regulation, the identical trade mark product into drying process can be carried out according to identical machined parameters
Silk is dried, the fluctuation of different batches of product drying process processing intensity is reduced, realizes the stability control of procedure quality, it is complete to dry silk
At the rear remaining process into tobacco scrap prodn.
Method using the present invention produces the stem sample of different batches, and is compared with conventional method, right
It is more as shown in table 1 below than result.
Table 1
From upper table 1：Qualification rate by using stem sample after the method regulation and control of the present invention is more than conventional method tune
Qualification rate after control, the standard deviation after regulating and controlling through the invention are significantly less than the standard deviation after conventional method regulation and control, standard
The reduction explanation of deviation fluctuates small, the stem sample between batch using the stem sample quality between the batch of the method production of the present invention
Quality more they tends to stablize.In conclusion the method for the present invention can significantly reduce drying process processing intensity between different batches
Fluctuation, ensure batch between baking silk outlet material quality stability to promote tobacco scrap prodn quality stability.
The process equipment involved in the present invention arrived, can be used prior art device, and moisture regulation can use Chinese patent
A kind of equipment progress that is balanced, adjusting material water ratio disclosed in CN104068459A.
Claims (3)
1. a kind of method promoting tobacco scrap prodn quality stability, which is characterized in that specifically include following steps：
1) it presses the prior art and carries out tobacco scrap prodn, feed intake → primary moisture regain → prewired storage leaf → secondary moisture regain → with leaf storage leaf → cuts
Silk；
2) material after chopping passes through moisture regulation process, increases material water ratio or reduces material water ratio, reaches identical board
Number material moisture is stablized；
3) subsequently into drying process, all identical trade mark products carry out baking silk according to identical machined parameters, realize process matter
The stability control of amount；
4) through mixing by prior art material after baking silk and match, flavoring, store silk, cigarette manufacture is provided and is used.
2. a kind of method promoting tobacco scrap prodn quality stability according to claim 1, it is characterised in that：The step
2) increase material water ratio in be the atomized water for being 10 μm with the air or grain size of temperature≤40 DEG C and humidity >=95% to material
Carry out humidification process.
3. according to a kind of method of any promotion tobacco scrap prodn quality stability of claim 1~2, it is characterised in that：
It is that processing is dried to material with the air of temperature≤40 DEG C and humidity≤40% that material water ratio is reduced in the step 2).
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Cited By (13)
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| CN109998143A (en) * | 2019-04-30 | 2019-07-12 | 贵州中烟工业有限责任公司 | A kind of preparation method of moisture in cut tobacco gradient experiment sample |
| CN109998141A (en) * | 2019-04-30 | 2019-07-12 | 贵州中烟工业有限责任公司 | A kind of control method of tobacco-dryer exit moisture |
| CN109998142A (en) * | 2019-04-30 | 2019-07-12 | 贵州中烟工业有限责任公司 | A kind of control method of cut-tobacco drier barrel temperature |
| CN110973680A (en) * | 2019-10-17 | 2020-04-10 | 红塔烟草(集团)有限责任公司 | Method and system for stabilizing processing strength of drum-type cut tobacco drying machine |
| CN111103854A (en) * | 2019-12-10 | 2020-05-05 | 云南昆船设计研究院有限公司 | System and method for improving production stability of tobacco cut-tobacco drier |
| CN111134353A (en) * | 2019-12-02 | 2020-05-12 | 徐州星亮化机械科技有限公司 | Tobacco processing method |
| CN111671117A (en) * | 2020-06-22 | 2020-09-18 | 广西中烟工业有限责任公司 | Cigarette shred-making stepped leaf storage process |
| CN112075658A (en) * | 2020-09-27 | 2020-12-15 | 红云红河烟草(集团)有限责任公司 | Process for accurately controlling stability of moisture content after shredding |
| CN112220094A (en) * | 2020-09-28 | 2021-01-15 | 福建中烟工业有限责任公司 | Method and device for drying tobacco shreds with constant processing strength and method and system for manufacturing tobacco shreds |
| CN113273713A (en) * | 2021-06-29 | 2021-08-20 | 厦门烟草工业有限责任公司 | Tobacco shred production system and tobacco material moisture content control method |
| CN113303489A (en) * | 2021-06-02 | 2021-08-27 | 红云红河烟草(集团)有限责任公司 | Method for accurately controlling moisture of tobacco leaves in tobacco shred making process |
| CN113576017A (en) * | 2021-07-15 | 2021-11-02 | 河南中烟工业有限责任公司 | Cut tobacco drying water control method |
| CN115226930A (en) * | 2022-06-16 | 2022-10-25 | 浙江中烟工业有限责任公司 | Silk making method of tobacco shreds containing glycerol leaves |
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