CN102626254B - High-quality tobacco leaf baking process - Google Patents

High-quality tobacco leaf baking process Download PDF

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Publication number
CN102626254B
CN102626254B CN201210100281.9A CN201210100281A CN102626254B CN 102626254 B CN102626254 B CN 102626254B CN 201210100281 A CN201210100281 A CN 201210100281A CN 102626254 B CN102626254 B CN 102626254B
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China
Prior art keywords
tobacco
temperature
leaf
dry
baking
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CN201210100281.9A
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Chinese (zh)
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CN102626254A (en
Inventor
张谷林
王忠建
秦霆镐
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云南中建博能工程技术有限公司
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Publication of CN102626254A publication Critical patent/CN102626254A/en
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Abstract

The invention discloses a high-quality tobacco leaf baking process. Major aims to be fulfilled at every time interval of tobacco leaf baking are classified into a yellowing stage, a wilting stage, a color fixing and leaf drying stage and a stalk drying stage, a more intuitional baking process curve is drawn, and a temperature raising speed, upper and lower limit temperature values, a humidity range to be controlled, heat preserving time, and quality appearance forms including color luster, dryness shape and percentage in all tobacco leaves to be achieved in tobacco leaf baking are set at every stage. At the yellowing stage, the leaf surfaces of tobacco leaves on first and second tobacco leaf baking frames in a baking room become yellow completely; at the wilting stage, all tobacco leaves in a furnace wilt and become yellow; at the color fixing and leaf drying stage, tobacco leaves on a bottom tobacco leaf baking frame become pointed, leaves are drum-shaped or approximately drum-shaped, and the leaf surfaces are dry; and at the stalk drying stage, heat is preserved till all tobacco stalks in the furnace are dried completely. According to the baked tobacco leaves, the green smoke rate and ash hanging rate can be reduced remarkably, and green stalks, clear sheets, green flotation, ash hanging and the like are reduced.

Description

Sound tobacco baking process
Technical field
The present invention relates to a kind of sound tobacco baking process.
Background technology
In leaf tobacco production, kind, cultivation are bases, and baking is crucial.In recent years, China's method for flue-curing tobacco leaves has experienced the reform of varied form.Such as two stage baking process, multistage baking process, traditional flue-curing barn baking process, syllogic baking process etc., under specific economic base condition, combine with specific barn type, produce different content, multi-form baking process.
The existing barn great majority of the tobacco grower of Yunnan Province are the feature of the intensive automation barn of vertical air-flow ascending manner at present, and the syllogic baking process or the traditional flue-curing barn baking process etc. that in baking, continue before employing have not all adapted to utilize hothouse baking to go out the requirement of qualified tobacco leaf.In bake process, not only blue or green cigarette, blue veins, leafiness and dust cigarette increase, and baking properties is not high, do not reach the due effect of intensive barn curing baking tobacco leaves.Its major reason is the designing requirement that baking process technology is not suitable with the intensive automation barn of vertical air-flow ascending manner.
Summary of the invention
Object of the present invention is just to provide a kind of sound tobacco baking process, so that utilize the user of the intensive automation barn of vertical air-flow ascending manner in tobacco flue-curing, more clearly grasp the control of temperature and humidity main points in each stage in baking, bring into play the advantage of this kind of barn, toast out high-quality tobacco leaf.
The technical scheme of taking: sound tobacco baking process, tobacco flue-curing is toasted to the main purpose that will reach according to day part and be divided into changing yellow stage, wilting phase, fixation cured leaf phase, drying muscle stage four-stage and make more intuitive method for flue-curing tobacco leaves curve, concrete operations technique is as follows:
changing yellow stage: a, with the speed of 1 DEG C/h, dry-bulb temperature is raised to 30 DEG C, 35 DEG C~36 DEG C of wet-bulb temperature, constant temperature 7 hours, treats in barn on First tobacco flue-curing frame that the blade tip flavescence rate of tobacco leaf is not less than 60%;
B, with the speed of 1 DEG C/h, dry-bulb temperature is raised to 35 DEG C from 30 DEG C, 35 DEG C~36 DEG C of wet-bulb temperature, constant temperature 10 ± (0.2-0.4) hour, treats in barn that on First tobacco flue-curing frame, the blade tip of tobacco leaf is entirely yellow, and on two tobacco flue-curing framves, the blade tip flavescence rate of tobacco leaf is not less than 60%;
C, with the speed of 1 DEG C/h, dry-bulb temperature is raised to 39 DEG C from 35 DEG C, 35 DEG C~36 DEG C of wet-bulb temperature, constant temperature 10 ± (0.2-0.5) hour, the tobacco surface in barn on first, second tobacco flue-curing frame is entirely yellow;
the wilting phase: with the speed of 1 DEG C/h, dry-bulb temperature is raised to 43 DEG C from 39 DEG C, 36 DEG C~37 DEG C of wet-bulb temperature, constant temperature 11 ± (0.2-0.6) hour, the tobacco leaf in barn on every tobacco flue-curing frame is entirely yellow, the complete wilting flavescence of stove tobacco leaf;
the fixation cured leaf phase: a, with the speed of 0.5 DEG C/h, dry-bulb temperature is raised to 47 DEG C from 43 DEG C, 37 DEG C~39 DEG C of wet-bulb temperature, constant temperature is no less than 2 hours, and the branch's cigarette muscle and the main cigarette muscle that reach every tobacco leaf on tobacco flue-curing frame when tobacco leaf flavescence turn white, and top platform tobacco leaf is entirely yellow;
B, with the speed of 0.5 DEG C/h by dry-bulb temperature from 47 DEG C to 55 DEG C, 37 DEG C~39 DEG C of wet-bulb temperature, constant temperature is no less than 10 hours, the tobacco leaf on base frame tobacco flue-curing frame hooks point, blade-shaped becomes drum or approaches roll-shaped, blade face is dry;
drying muscle stage: a, with the speed of 1 DEG C/h, dry-bulb temperature is raised to 60 DEG C from 55 DEG C, 40 DEG C~42 DEG C of wet-bulb temperature, constant temperature is no less than 5 hours, and the tobacco leaf on top platform tobacco flue-curing frame forms drum or approaches roll-shaped.
B, with the speed of 1 DEG C/h, dry-bulb temperature is raised to 65 DEG C from 60 DEG C, 40 DEG C~42 DEG C of wet-bulb temperature, now in barn, tobacco leaf only has the main muscle of indivedual several blades to have 2-3 ㎝ not dry, and constant temperature is until full stove cigarette muscle is absolutely dry.
According to above-mentioned technique, described constant temperature refers to and heats up while reaching the ceiling temperature value in this processing step, keeps constant temperature.
Make the process curve figure that can instruct tobacco flue-curing mode of operation according to the relation of the temperature in above-mentioned technical process, humidity and baking time.
Adopting resolution ratio is that 0.1 DEG C of accuracy of detection PT100 that is 0.25% is as temperature sensor.
The control of programming rate is realized by " programming rate=(target temperature-observed temperature) ÷ temperature raising time " calculating by computer.
Through repetition test and test, find out and be adapted to the baking process method of vertical air-flow rising-type bulk curing barn and produce process curve.It is that the PT100 that 0.1 DEG C of accuracy of detection is 0.25% is applied to tobacco flue-curing as temperature sensor that this process curve adopts resolving power, ensure tobacco leaf requirement to temperature and humidity precision in bake process, tobacco leaf quality percentage is largely increased, and toasts energy consumption simultaneously and is effectively controlled.Adopting this baking process, can obviously reduce blue smoke rate and dust rate, reduce the baking phenomenons such as blue veins, clear sheet, floating green grass or young crops, dust and produce, is the baking process that improves tobacco flue-curing quality.
Brief description of the drawings
Fig. 1 is the process curve figure that technique of the present invention is made.
Detailed description of the invention
Below in conjunction with accompanying drawing, as an example, technical scheme is further illustrated.
This example uses the intensive automation barn of vertical air-flow ascending manner, in barn, have from bottom to up 5 tobacco flue-curing framves, on every tobacco flue-curing frame in barn, pack into after cigarette, the baking data of indicating in input curve in the control system computer of tobacco flue-curing, be that the PT100 that 0.1 DEG C of accuracy of detection is 0.25% is placed in barn as temperature sensor using resolution ratio, temperature, the humidity data that sensor collects is connected to be controlled in computer, igniting.Concrete operations are as follows:
1, changing yellow stage
(1) with the speed of 1 DEG C/h, dry-bulb temperature is raised to 30 DEG C, constant temperature 7 ± (0.4-0.7) hour, treats that on First tobacco flue-curing frame, the flavescence of tobacco leaf blade tip reaches 60%;
(2) with the speed of 1 DEG C/h, dry-bulb temperature is raised to 35 DEG C from 30 DEG C, constant temperature is about 10 hours, and on a tobacco flue-curing frame, tobacco leaf blade tip is entirely yellow, tobacco leaf blade tip flavescence 60% on two tobacco flue-curing framves.
(3) with the speed of 1 DEG C/h, dry-bulb temperature is raised to 39 DEG C from 35 DEG C, constant temperature is about 10 hours, and the tobacco surface on one, two tobacco flue-curing frame is entirely yellow.
(4) note: if wet-bulb temperature does not reach requirement, please wet to mending in barn.
2, the wilting phase
With the speed of 1 DEG C/h, dry-bulb temperature is raised to 43 DEG C from 39 DEG C, constant temperature is about 11 hours, and the tobacco leaf on five tobacco flue-curing framves is entirely yellow, the complete wilting flavescence of stove tobacco leaf.
3, the fixation cured leaf phase
(1) with the speed of 0.5 DEG C/h, dry-bulb temperature is raised to 47 DEG C from 43 DEG C, constant temperature, about 2 hours, turns white when tobacco leaf flavescence reaches five tobacco leaf offshoot and master pulses on tobacco flue-curing frame, and top platform tobacco leaf is entirely yellow.
(2) with the speed of 0.5 DEG C/h by dry-bulb temperature from 47 DEG C to 55 DEG C, constant temperature is about 10 hours, on base frame tobacco flue-curing frame, tobacco leaf hooks point, blade-shaped becomes drum or approaches roll-shaped, is commonly called as parent roll, blade face is dry.
4, drying muscle stage
(1) with the speed of 1 DEG C/h, dry-bulb temperature is raised to 60 DEG C from 55 DEG C, constant temperature is about 5 hours, and top platform tobacco leaf reaches parent roll.
(2) with the speed of 1 DEG C/h, dry-bulb temperature is raised to 65 DEG C from 60 DEG C, now in barn, tobacco leaf only has the main muscle of minority blade to have 2-3 ㎝ not dry, constant temperature until on top platform tobacco flue-curing frame cigarette muscle absolutely dry.
5, points for attention: change at tobacco leaf the variation standard that do not reach, need to extend constant temperature time.Change at tobacco leaf the variation standard that reaches in advance, need to shorten constant temperature time, enter in advance the next stage.
In bake process, the yellowing degree of tobacco surface is by eye-observation, if time is up for current baking stage running, and the yellowing degree of tobacco surface does not also reach requirement, the baking time of current generation can be extended; If tobacco surface yellowing degree has reached current generation requirement, and more than running time, baking time is shortened to and adapts to this requirement.
According to method for flue-curing tobacco leaves provided by the invention, the first-class cigarette ratio in the tobacco leaf toasting out is 92.5%, improves 58.5% than standard barn, and roasting bad tobacco leaf ratio is 0.7%, reduces by 5.6% than standard barn.One kilogram of dry cigarette of every baking only consumes 1.21 yuan of labour costs, reduces 1.57 yuan than standard barn; Often roasting one kilogram of average energy consumption cost of dry cigarette is 0.43 yuan, compared with standard barn, reduces 0.26 yuan, reduces costs 38%; The input and output of baking energy consumption cost is than being 1:30.99 times.

Claims (3)

1. sound tobacco baking process, tobacco flue-curing is toasted to the main purpose that will reach according to day part and be divided into changing yellow stage, wilting phase, fixation cured leaf phase, drying muscle stage four-stage, the platform order of tobacco flue-curing frame is arranged from bottom to top, it is characterized in that adopting resolution ratio is that the PT100 that 0.1 DEG C of accuracy of detection is 0.25% is placed in barn as temperature sensor, and operating procedure is as follows:
changing yellow stage: a, with the speed of 1 DEG C/h, dry-bulb temperature is raised to 30 DEG C, 35 DEG C~36 DEG C of wet-bulb temperature, constant temperature 7 hours, treats in barn on First tobacco flue-curing frame that the blade tip flavescence rate of tobacco leaf is not less than 60%;
B, with the speed of 1 DEG C/h, dry-bulb temperature is raised to 35 DEG C from 30 DEG C, 35 DEG C~36 DEG C of wet-bulb temperature, constant temperature 9.6-10.4 hour, treats in barn that on First tobacco flue-curing frame, the blade tip of tobacco leaf is entirely yellow, and on two tobacco flue-curing framves, the blade tip flavescence rate of tobacco leaf is not less than 60%;
C, with the speed of 1 DEG C/h, dry-bulb temperature is raised to 39 DEG C from 35 DEG C, 35 DEG C~36 DEG C of wet-bulb temperature, constant temperature 9.5-10.5 hour, the tobacco surface in barn on first, second tobacco flue-curing frame is entirely yellow;
the wilting phase: with the speed of 1 DEG C/h, dry-bulb temperature is raised to 43 DEG C from 39 DEG C, 36 DEG C~37 DEG C of wet-bulb temperature, constant temperature 10.4-11.6 hour, the tobacco leaf in barn on every tobacco flue-curing frame is entirely yellow, the complete wilting flavescence of stove tobacco leaf;
the fixation cured leaf phase: a, with the speed of 0.5 DEG C/h, dry-bulb temperature is raised to 47 DEG C from 43 DEG C, 37 DEG C~39 DEG C of wet-bulb temperature, constant temperature is no less than 2 hours, and the branch's cigarette muscle and the main cigarette muscle that reach every tobacco leaf on tobacco flue-curing frame when tobacco leaf flavescence turn white, and top platform tobacco leaf is entirely yellow;
B, with the speed of 0.5 DEG C/h by dry-bulb temperature from 47 DEG C to 55 DEG C, 37 DEG C~39 DEG C of wet-bulb temperature, constant temperature is no less than 10 hours, the tobacco leaf on First tobacco flue-curing frame hooks point, blade-shaped becomes drum or approaches roll-shaped, blade face is dry;
drying muscle stage: a, with the speed of 1 DEG C/h, dry-bulb temperature is raised to 60 DEG C from 55 DEG C, 40 DEG C~42 DEG C of wet-bulb temperature, constant temperature is no less than 5 hours, and the tobacco leaf on top platform tobacco flue-curing frame forms drum or approaches roll-shaped;
B, with the speed of 1 DEG C/h, dry-bulb temperature is raised to 65 DEG C from 60 DEG C, 40 DEG C~42 DEG C of wet-bulb temperature, now in barn, tobacco leaf only has the main muscle of indivedual several blades to have 2-3 ㎝ not dry, and constant temperature is until full stove cigarette muscle is absolutely dry.
2. sound tobacco baking process according to claim 1, is characterized in that the relation of the temperature in technical process, humidity and baking time to make the process curve figure that can instruct tobacco flue-curing mode of operation.
3. sound tobacco baking process according to claim 1, the control that it is characterized in that programming rate is calculated and to be realized by " programming rate=(target temperature-observed temperature) ÷ temperature raising time " by computer.
CN201210100281.9A 2012-04-09 2012-04-09 High-quality tobacco leaf baking process CN102626254B (en)

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Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102987540B (en) * 2012-11-26 2014-06-25 湖北省烟草科研所 Tobacco leaf prewilting baking process for bulk curing barn
CN102920001B (en) * 2012-11-30 2015-01-07 云南省烟草农业科学研究院 Flue-cured tobacco different-maturity-level tobacco leaf same-furnace modulation technology
CN105286067B (en) * 2015-11-04 2017-03-08 云南省烟草农业科学研究院 A kind of method improving tender black sudden and violent baking quality of tobacco
CN105341986B (en) * 2015-11-04 2017-03-15 云南省烟草农业科学研究院 A kind of method for improving Cold Dew aggrieved baking quality of tobacco
CN105455187A (en) * 2015-12-02 2016-04-06 云南省农业科学院农业环境资源研究所 Intensive curing method for flue-cured tobacco variety NC102
CN107156212A (en) * 2017-07-07 2017-09-15 芜湖飞越食品有限公司 A kind of intelligent temperature control food-processing method

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GB832991A (en) * 1956-10-19 1960-04-21 Francisco Romero Prats 11 Improvements in or relating to a process of treating tobacco
CN101416770A (en) * 2008-11-25 2009-04-29 云南省烟草科学研究所 Cured tobacco baking technique capable of preventing 'black ant peel' symptom during baking tobacco leaf
CN101416767A (en) * 2008-11-25 2009-04-29 云南省烟草科学研究所 Cured tobacco baking technique capable of improving quality and flavoring

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US8151804B2 (en) * 2008-12-23 2012-04-10 Williams Jonnie R Tobacco curing method

Patent Citations (3)

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Publication number Priority date Publication date Assignee Title
GB832991A (en) * 1956-10-19 1960-04-21 Francisco Romero Prats 11 Improvements in or relating to a process of treating tobacco
CN101416770A (en) * 2008-11-25 2009-04-29 云南省烟草科学研究所 Cured tobacco baking technique capable of preventing 'black ant peel' symptom during baking tobacco leaf
CN101416767A (en) * 2008-11-25 2009-04-29 云南省烟草科学研究所 Cured tobacco baking technique capable of improving quality and flavoring

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