CN1301674C - Scattered leaf stacked tobacco-roasting house and its leaf roasting method - Google Patents

Scattered leaf stacked tobacco-roasting house and its leaf roasting method Download PDF

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Publication number
CN1301674C
CN1301674C CNB2004100308485A CN200410030848A CN1301674C CN 1301674 C CN1301674 C CN 1301674C CN B2004100308485 A CNB2004100308485 A CN B2004100308485A CN 200410030848 A CN200410030848 A CN 200410030848A CN 1301674 C CN1301674 C CN 1301674C
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China
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cigarette
tobacco
house
wind
heating
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CNB2004100308485A
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Chinese (zh)
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CN1676044A (en
Inventor
罗勇
李明海
梁永红
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贵州省烟草公司遵义市分公司
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Priority to CN200410029856.8 priority
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Priority to CNB2004100308485A priority patent/CN1301674C/en
Publication of CN1676044A publication Critical patent/CN1676044A/en
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Publication of CN1301674C publication Critical patent/CN1301674C/en

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Abstract

The present invention discloses a scattered leaf stacked tobacco-roasting house and its leaf roasting method, which includes two juxtaposed rooms: a heating room and a tobacco filling room; the said heating system is disposed in the heating room, and a tobacco stacking gate is disposed in the tobacco filling room; the said hot air circulation system which makes the hot air circulate between the heating room and the tobacco filling room is diposed in the heating room and the tobacco filling room and connects the heating room and the tobacco filling room; the layers and the height of the scattered leaf stacked tobacco-roasting house are both lower than that of the conventional roasting house, which avoids the high-altitude operation in the filling house, and the operation being safe and convenient; the scattered leaf stacked tobacco-roasting house adopts that the heating room and the tobacco filling room are mutually isolated with each other, therefore, no fire will occur and it is more secure; the roasting house has a lower-cost, a low vertical temperature, and a uniform surface temperature; and it save labor costs according to the conventional roasting house, thereby improving the quality of tobacco, and increasing the output.

Description

Bulk stacking type tobacco flue-curing house and tobacco flue-curing method thereof
Technical field
The present invention relates to a kind of tobacco flue-curing house, relate in particular to a kind of bulk stacking type tobacco flue-curing house and tobacco flue-curing method thereof.
Background technology
At present, no matter tobacco flue-curing house that uses on the cured tobacco production and baking of flue-cured tobacco case are air-flow ascending manner or air-flow descending manner, all will tie up a heatable brick bed on the bar, separate down cigarette or with a heatable brick bed on the special equipment folder cigarette of rope, separate folder cigarette down, and labour intensity is big; Most of tobacco flue-curing house height that uses all more than 6M, need work high above the ground, and capacity is little in the production; Baking of flue-cured tobacco case price is higher, and in addition, existing tobacco flue-curing house heating system is located in the cigarette-filling house, and the tobacco leaf below is provided with fire tube, and vertical temperature-difference is big, the plane non-uniform temperature; The baking poor stability; The performance of barn is bad, and employing is tied up the bar structure and laid tobacco leaf, at the bottom of the utilization rate, and the energy height of consumption.
China's leaf tobacco production planting scale is little at present; planting the cigarette labour reduces in a large number; the quality of tobacco gap of producing down with ecological condition is bigger; the adjustment of Industry Structure, raising agricultural product competitiveness; promote agricultural production to develop, provide condition for applying the bulk stacking type tobacco flue-curing house to intensification and scale direction.
Summary of the invention
The object of the present invention is to provide a kind of new-type bulk stacking type tobacco flue-curing house and tobacco flue-curing method thereof, it adopts tobacco leaf directly to go up a heatable brick bed, the leaf that looses is arranged and is stacked, petiole is downward during stacking, baking finishes directly to descend a heatable brick bed, save the labour, reduce labour intensity and baking cost, improve the baking quality and the output of tobacco leaf.The technical scheme that bulk stacking type tobacco flue-curing house of the present invention is adopted is: it comprises two chambers side by side: heating clamber and cigarette-filling house; Described heating system is located in the heating clamber, is provided with the heap cigarette in described cigarette-filling house; Describedly make hot air circulating system that hot blast circulates between heating clamber and cigarette-filling house be located in heating clamber and the cigarette-filling house and be communicated with heating clamber and cigarette-filling house.
Described bulk stacking type tobacco flue-curing house, it is characterized in that, it comprises, described heating system comprises heater, chimney, blower fan, air inlet, hot-blast outlet, described heater places in the heating clamber, heater is connected with fire door opposite body of wall chimney outward, and blower fan provides the motor of power to be connected with fan and places the heating clamber top, and described air inlet is located at the body of wall side of blower fan top, hot-blast outlet be located at heating clamber and cigarette-filling house between the bottom of divider wall, be used to be communicated with two Room.
The hot air circulating system of described cigarette-filling house comprises, the hot blast import, and air inlet duct, even wind divides the wind facility, air-return duct, return air inlet, the passage of described air inlet duct for flowing in cigarette-filling house along cigarette-filling house's ground self-heating wind inlet;
Be provided with even wind in the bottom of cigarette-filling house's air inlet duct, divide wind apparatus, this even wind, the slope of branch wind apparatus for raising gradually along air inlet duct ground;
Air-return duct be along cigarette-filling house's roof face by the passage that flows out to heating clamber top, air-return duct also is provided with even wind, divides wind apparatus, this even wind, divide wind apparatus be the roof towards the heating clamber top gradually by the low slope that uprises;
Described return air inlet is located at the divider wall top that is used to isolate heating clamber and cigarette-filling house;
In heating clamber, also further be provided with wind deflector and air inlet duct base plate;
Blower motor AD and fire door are located at the top near a body of wall of blower fan, dress cigarette door on heating clamber divider wall opposite, humiture observation window cigarette-filling house facade wall, the tobacco leaf observation window the humiture observation window to face wall on;
Bar palisade or the latticed net basket of described smoke-piling fence for adopting batten or bamboo bar to make;
It comprises that further one has the thermometer of electronic probe, and probe positions is installed sub-barn center, the above 15-20cm of cigarette frame place;
The hot blast that described heating system is come out was both forced hot blast to pressing down by the blower fan of heater top, enter cigarette-filling house by hot-blast outlet 7 (or induced-draught fan being installed) by hot-blast outlet 7, air-flow is from bottom to top operation in cigarette-filling house, again by air-return duct 27, return air inlet 8, enter heating clamber 28, carry out two circulations.
Wind speed is generally about 0.1m/s between conventional barn leaf, and bulk curing barn adorns that wind speed reaches about 0.3m/s between three layers of tobacco leaf requirement leaf, could satisfy the requirement of pressure hydrofuge, and with regard to present several bulk curing barn design specifications, the use total blast volume should be not less than 18000m 3/ h, as press the normal air quantity loss of blower fan 25% with interior calculating, blower fan nominal air quantity should be not less than 24000m 3/ h.
Table 1 barn performance of ventilating parameter
The barn type The fan performance parameter Wind speed between minimum leaf (m/s) Wind speed between leaf (m/s) Actual measurement index actual air volume (m 3/h)
Power of fan (kw) Nominal air quantity (m 3/h) Full blast is pressed (pa)
Bulk stacking type brick wood is partly piled up the conventional barn of formula MKD-132 baking box ??4 ??4.5 ??5.5 32,000 32,000 18000 gravity-flow ventilations ??340 ??340 ??1000 ??0.4 ??0.4 ??0.4 ??0.1 ??0.78 ??0.83 ??0.45 ??0.18 ??18446.4 ??19353.6 ??15096
From table 1 measurement result as can be seen, bulk stacking type barn actual air volume all reaches the design objective requirement, is respectively 18446.4 and 19353.6m 3/ h, between leaf wind speed all above 0.4m/s, needs that can fine satisfied baking sound tobacco, and MKD-132 type baking box is because of nominal air quantity 18000m only 3/ h, its actual actual air volume deficiency, only 15096m 3/ h, with regard to fan static pressure, three kinds of bulk curing barns use blower fan all to reach the minimum index of 98Pa [4], blast is big more, by even more with air quantity between layer tobacco leaf.
Bulk stacking type tobacco flue-curing house baking process of the present invention comprises the steps;
(1) dress a heatable brick bed characteristics and requirement; The leaf that looses is piled up barn dress cigarette and is not tied up bar, and the tobacco leaf petiole is downward, the blade tip leaf that makes progress; Require with the rare density uniformity of layer tobacco leaf during the dress a heatable brick bed, and do not have the mouth that leaks out more greatly, all tobacco leaves tilt to same direction;
(2) heat and make hot air circulation carry out flue-cured tobacco; Light heater, open blower fan hot blast is blowed to cigarette-filling house along the hot blast import, and carry out flue-cured tobacco by following step:
(a) changing yellow stage: rapidly temperature is risen to after the igniting more than 35 degree, maintenance>35-37 ℃ (dry and wet temp differs from 2 ℃) felt like jelly to tobacco leaf and to be fallen down in steady temperature 10-15 hour; Then temperature is risen to>39-40 ℃, wet-bulb temperature keeps 36-37 ℃, steady temperature is to the full flavescence of tobacco leaf, reach the pornographic movie blue veins, be warming up to 38-<40 ℃, about 37 ℃ of wet-bulb temperature again, steady temperature about 10 hours,, to heat up behind the hydrofuge in advance and change fixation stage over to, the flavescence time generally remained on 45-50 hour;
(b) fixation stage: after tobacco leaf reaches the flavescence requirement, rapidly the barn temperature is risen to 45-<48 ℃, control wet-bulb temperature is at 37-38 ℃, and steady temperature to tobacco leaf reaches pornographic movie, yellow muscle, generally needs about 12 hours; Be warming up to 50-52 ℃ then, keep wet-bulb temperature 37-<39 ℃, toast 11-12 hour, be warming up to again 54-55 ℃ (wet bulb 37-<39 ℃, intensification in steady temperature 11-12 hour enters drying muscle stage; Omnidistance wet-bulb temperature all can not be above requiring;
Drying muscle stage: after tobacco leaf reaches the fixation requirement, rapidly dry-bulb temperature is risen to>65-68 ℃, wet-bulb temperature is no more than 42 ℃, general 39-<42 ℃, and it is absolutely dry flame-out to be baked to the cigarette muscle, and moisture regain is a heatable brick bed down;
(c) force moisture regain; After closing fire, treating that temperature is reduced to below 40 ℃ in the barn, is to quicken tobacco leaf conditioning, can add water on barn ground and carry out and force moisture regain, about amount of water 100kg, divides 3-4 adding, adds all portings of unlatching behind the water, and moves blower fan and get damp again; Also can open all portings when air humidity is big and blower fan gets damp again in morning, the moisture regain time prevents that generally at 2 hours tobacco leaf conditioning is excessive;
(d) thermometer installation site; Thermometer must correctly be indicated the temperature and humidity of tobacco leaf environment of living in, therefore requires to adopt the thermometer with electronic probe, and probe positions is installed on barn levels cigarette and deletes above 15-20cm place.Have suffered bake process and mainly regulate with wet-bulb temperature, dry-bulb temperature heats up must reach the requirement temperature as early as possible, prevents that dry-bulb temperature is fluctuated.In case roasting bad tobacco leaf, occur dust, roasting blue or green, fall sweat, spermatic cord, steaming sheet;
Stop when (3) opening during the omnidistance blower fan of baking, available genset power supply during power failure prevents behind the tobacco leaf self-heating roasting bad.
Owing to adopt the technique scheme beneficial effect to be;
The number of plies of bulk stacking type barn and highly all be lower than conventional barn, three layers of bulk stacking type barns and height 3.2m more than the conventional air-flow ascending manner barn 6m, have avoided the high-altitude application in the dress a heatable brick bed, handling safety, convenient; Conventional barn firing equipment directly places the cigarette-filling house bottom, if tobacco leaf falls down in the bake process, fire tube breaks etc., very easily cause fire, and fire phenomena can not appear in the mutual isolation design of bulk stacking type barn heating clamber and cigarette-filling house, thus safer.
Save the energy, it is as follows that reduction baking cost is baked into this statistical form;
Table 2
The barn type Labour cost Energy consumption cost Dried cigarette amount (kg/ a heatable brick bed) Average unit cost (unit/kg)
The amount of labour used Amount to unit Coal (kg) Electricity (kwh) Amount to unit
The conventional barn of bulk stacking type brick wood half accumulation formula ??13 ??18.75 ??9.75 ??195 ??281.25 ??146.25 720 720 450 ?384 ?463 ??294.33 ??335.22 ??90 ?500 ?450 ?145 ?0.98 ?1.37 ?1.73
As seen table 2 toasts the 500Kg dry tobacco leaf, the leaf barn coal consumption 720Kg that looses (tearing open and closing the mark coal is 543.15Kg), and electricity consumption 384 degree, only 0.98 yuan of the dried cigarette baking of every kg cost; 1.73 yuan of the dried cigarette baking of conventional barn per kilogram costs; Reach 43.35% than conventional barn saving baking cost.The bulk stacking type baking technology has changed traditional a heatable brick bed on the bar of tying up, and separates rope cigarette down, but takes tobacco leaf directly to go up a heatable brick bed, and the leaf that looses is arranged and stacked, and petiole is downward during stacking, and baking finishes directly to descend a heatable brick bed; The tobacco leaf that following a heatable brick bed 30-40 mu cigarette ground produces needs 10 labours approximately, and conventional barn is gathered, Shang Keng, the tobacco leaf produced of a heatable brick bed 5--8 mu cigarette ground down, just need 10 labours.Both compare, and the bulk stacking type baking is a large amount of saves the labour, thereby reduces the production labor cost;
From the inherent composition (table 3) of tobacco leaf, the nicotine content of bulk stacking type barn baking tobacco leaves is lower than conventional barn, and total reducing sugar and reduced sugar are higher, and overall inherent composition more is tending towards coordinating.
Table 3 tobacco sample result of laboratory test
Handle Nicotine Total reducing sugar Reduced sugar Total nitrogen Potassium Chlorine Remarks
The leaf central part routine of loosing middle part ??2.27 ??2.64 ??26.25 ??23.28 ??18.12 ??17.6 ??1.65 ??1.64 ??1.18 ??1.19 ??0.19 ??0.2 Cigarette C2L field, field cigarette C2L
Make fuel with common fire coal, take mandatory ventilation dewetting, levels degree of having a narrow range of temperature in the barn, ventilation dewetting is smooth and easy.
Description of drawings
Fig. 1 is vertical elevation;
Fig. 2 is a longitudinal sectional drawing;
Fig. 3 is a floor plan;
The specific embodiment
The present invention will be further described below in conjunction with accompanying drawing;
Embodiment one, referring to Fig. 1-3, showed a kind of bulk stacking type tobacco flue-curing house among the figure, and it comprises: room body, heating system and hot air circulating system is characterized in that described room body comprises two chambers that are set up in parallel: heating clamber 28 and cigarette-filling house 29; Described heating system is located in the heating clamber 28, is provided with smoke-piling fence 11 in described cigarette-filling house 29; Describedly make hot air circulating system that hot blast circulates between heating clamber 28 and cigarette-filling house 29 be located in heating clamber 28 and the cigarette-filling house 29 and be communicated with heating clamber 28 and cigarette-filling house 29;
The heating system of described heating clamber 28 comprises; Heater 1, chimney 2, blower fan 3,, air inlet 21, hot-blast outlet 7, the stove and accessory that dress moulded coal or diffusing coal are arranged in the described heater 1, heater 1 is connected with fire door 19 opposite bodies of wall chimney 2 outward, and air inlet 21 is on blower fan AD 24, and blower fan 3 is connected with motor 26, and placing the top of heating clamber, hot-blast outlet 7 is the divider wall of heating clamber 28 and cigarette-filling house 29 10 times.
The hot air circulating system of described cigarette-filling house comprises, hot blast import 5, air inlet duct 25, even wind, branch wind apparatus 15, air-return duct 27, return air inlet 8, the passage of described air inlet duct 25 for flowing in cigarette-filling house along cigarette-filling house's ground self-heating wind inlet 5;
Be provided with even wind in the bottom of cigarette-filling house's air inlet duct 25 and divide wind apparatus 15, this even wind, branch wind apparatus 15 are the slope of raising gradually along air inlet duct ground;
Air-return duct 27 be along cigarette-filling house's roof face by the passage that flows out to heating clamber 28 tops, air-return duct 27 also is provided with even wind, divides wind apparatus 14, this even wind, divide wind apparatus 14 for the roof to heating clamber 28 tops gradually by the low slope that uprises;
Described return air inlet 8 is located at divider wall 10 tops that are used to isolate heating clamber and cigarette-filling house.
In heating clamber, also further be provided with wind deflector 6 and air inlet duct base plate 9.
The hot blast that described heating system is come out is both by hot-blast outlet 7, and air inlet duct 25 is spared wind, divided wind facility 15, enters cigarette-filling house 29 again by air-return duct 27, and return air inlet 8 enters heating clamber 28, circulates.
The wall of described heating clamber 28 and cigarette-filling house 29 is provided with,, dress cigarette door 16, humiture and tobacco leaf observation window 17, blower motor AD 18 and fire door 19 are located at the top of same face wall body, dress cigarette door 16 is located at the divider wall opposite, humiture observation window 17 places on the facade wall of cigarette-filling house 29, tobacco leaf observation window 12 humiture observation window 17 to face wall on.
It comprises that further one has the thermometer of electronic probe, and probe positions is installed on the above 15-20cm of barn center cigarette frame place.
When the present invention adopts above-mentioned tobacco flue-curing house to carry out flue-cured tobacco, adopt following steps:
(1) the present invention's leaf that looses is piled up barn dress cigarette and is not tied up bar, the tobacco leaf petiole downwards, blade tip upwards, big (the general bottom leaf 40kg/m of integral installation smoke density 2, middle leaf 45kg/m 2, upper leaf 50kg/m 2); Require with the rare density uniformity of layer tobacco leaf during the dress a heatable brick bed, and do not have the mouth that leaks out more greatly, all tobacco leaves tilt to the same direction of heating clamber end;
(2) heat and make hot air circulation carry out flue-cured tobacco; Light heater, open blower fan hot blast is blowed to cigarette-filling house along the hot blast import, and carry out flue-cured tobacco by following step:
Add 120 in honeycomb briquette when lighting a fire, in coal car, neatly put (generally putting 4 layers, 5 capable, 6 row), get 6-8 coal briquette ignites as burning things which may cause a fire disaster in advance, be positioned over the middle second layer of 120 coal briquettes, then coal car is pushed and allow its spontaneous firing in the stove, open blower fan hot blast is blowed to cigarette-filling house along the hot blast import, after temperature reaches the requirement temperature, reach the time control fire; When coal briquette in the coal car during with after-flame, in time coal in case in the barn temperature descend, every 6-10 hour coal is once, the each coal 60-80 of changing yellow stage, the each coal 100-120 of fixation stage, the each coal 150-200 of drying muscle stage, look the firepower flexible in size and grasp; Generally reaching before 2 ℃ of the target equilibrium temperatures in time by stove shutter and fiery lock control firepower, in case in the barn temperature too high, heat up too fastly, generally fill up coal briquette in about 2 hours in advance when needing to heat up;
(a) changing yellow stage: rapidly temperature is risen to after the igniting, keep 37 ℃ (dry and wet temp differs from 2 ℃), steady temperature 13 hours is felt like jelly to tobacco leaf and is fallen down; Temperature is risen to 40 ℃ then, wet-bulb temperature keeps 37 ℃, and steady temperature reaches the pornographic movie blue veins to the full flavescence of tobacco leaf, is warming up to 39 ℃ again, about 37 ℃ of wet-bulb temperature, and steady temperature 10 hours promotes that increasing sugar falls alkali, heating up behind the hydrofuge in advance changes fixation stage over to.The flavescence time generally remained on 50 hours;
(b) fixation stage: after tobacco leaf reaches the flavescence requirement, rapidly the barn temperature is risen to 45-46 ℃, control wet-bulb temperature is at 38 ℃, and steady temperature to tobacco leaf reaches pornographic movie, yellow muscle, generally needs 12 hours; Be warming up to 51 ℃ then, keep 38 ℃ of wet-bulb temperature, toasted 12 hours, be warming up to 38 ℃ of 55 ℃ of wet bulbs again, steady temperature heated up and enters drying muscle stage in 12 hours.Omnidistance wet-bulb temperature all can not be above requiring;
(c) drying muscle stage: after tobacco leaf reaches the fixation requirement, dry-bulb temperature is risen to 67 ℃ rapidly, wet-bulb temperature is no more than 42 ℃, and general 41 ℃, it is absolutely dry flame-out to be baked to the cigarette muscle, and moisture regain is a heatable brick bed down;
(d) force moisture regain; After closing fire, treating that temperature is reduced to below 40 ℃ in the barn, is to quicken tobacco leaf conditioning, can add water on barn ground and carry out and force moisture regain, about amount of water 100kg, divides 3-4 adding, adds all portings of unlatching behind the water, and moves blower fan and get damp again; Also can open all portings when air humidity is big and blower fan gets damp again in morning, the moisture regain time prevents that generally at 2 hours tobacco leaf conditioning is excessive;
Stop when (3) opening during the omnidistance blower fan of baking, available genset power supply during power failure prevents behind the tobacco leaf self-heating roasting bad; Thermometer must correctly be indicated the temperature and humidity of tobacco leaf environment of living in, therefore requires to adopt the thermometer with electronic probe, and probe positions is installed on every layer of above 15-20cm of cigarette grid of barn place.
Further, more than its blower fan nominal air quantity of baking test method is 24000m 3/ h-32000m 3/ h.Present embodiment only is used to illustrate the present invention, and protection domain is as the criterion with claim.

Claims (8)

1. a bulk stacking type tobacco flue-curing house comprises room body, heating system and hot air circulating system, comprises two chambers in the described room body side by side: heating clamber and cigarette-filling house; Described heating system is located in the heating clamber, is provided with smoke-piling fence in described cigarette-filling house; Describedly make hot air circulating system that hot blast circulates between heating clamber and cigarette-filling house be located in heating clamber and the cigarette-filling house and be communicated with heating clamber and cigarette-filling house, it is characterized in that: described heating system comprises heater, chimney, blower fan, air inlet, hot-blast outlet, described heater places in the heating clamber, heater is connected with fire door opposite body of wall chimney outward, blower fan provides the motor of power to be connected with fan and places the heating clamber top, described air inlet is located at the body of wall side of blower fan top, hot-blast outlet be located at heating clamber and cigarette-filling house between the bottom of divider wall, be used to be communicated with two Room;
The hot air circulating system of described cigarette-filling house comprises, the hot blast import, and air inlet duct, even wind divides the wind facility, air-return duct, return air inlet, the passage of described air inlet duct for flowing in cigarette-filling house along cigarette-filling house's ground self-heating wind inlet;
Be provided with even wind in the bottom of cigarette-filling house's air inlet duct, divide wind apparatus, this even wind, the slope of branch wind apparatus for raising gradually along air inlet duct ground;
Air-return duct be along cigarette-filling house's roof face by the passage that flows out to heating clamber top, air-return duct also is provided with even wind, divides wind apparatus, this even wind, divide wind apparatus be the roof towards the heating clamber top gradually by the low slope that uprises; Described return air inlet is located at the divider wall top that is used to isolate heating clamber and cigarette-filling house.
2. bulk stacking type tobacco flue-curing house according to claim 1 is characterized in that: also further be provided with wind deflector and air inlet duct base plate in heating clamber.
3. bulk stacking type tobacco flue-curing house according to claim 1, it is characterized in that, blower motor AD and fire door are located at the top near a body of wall of blower fan, dress cigarette door on heating clamber divider wall opposite, humiture observation window cigarette-filling house facade wall, the tobacco leaf observation window the humiture observation window to face wall on.
4. bulk stacking type tobacco flue-curing house according to claim 1 is characterized in that; Bar palisade or the latticed net basket of described smoke-piling fence for adopting batten or bamboo bar to make.
5. bulk stacking type tobacco flue-curing house according to claim 1 is characterized in that; It comprises that further one has the thermometer of electronic probe, and probe positions is installed on every layer of above 15-20cm of cigarette grid of barn place.
6. according to claim 1-5 bulk stacking type tobacco flue-curing house and tobacco flue-curing method thereof, it is characterized in that, comprise the steps;
(1) tobacco leaf dress a heatable brick bed; To loose the tobacco leaf petiole downwards, blade tip upwards is contained on the smoke-piling fence, requires with the rare density uniformity of layer tobacco leaf during the dress a heatable brick bed, and do not have the mouth that leaks out more greatly, all tobacco leaves tilt to the heating clamber direction;
(2) heat and make hot air circulation carry out flue-cured tobacco; Light heater, open blower fan hot blast is blowed to cigarette-filling house along the hot blast import, and carry out flue-cured tobacco by following step:
A. changing yellow stage: rapidly temperature is risen to after the igniting>a 35-37 ℃ dry and wet temp differs from 2 ℃, steady temperature 10-15 hour; Then temperature is risen to>39-40 ℃, wet-bulb temperature keeps 36-37 ℃, steady temperature is to the full flavescence of tobacco leaf, reach the pornographic movie blue veins, be warming up to 38-<40 ℃, about 37 ℃ of wet-bulb temperature again, steady temperature about 10 hours,, to heat up behind the hydrofuge in advance and change fixation stage over to, the flavescence time generally remained on 45-50 hour;
B. fixation stage: after tobacco leaf reaches the flavescence requirement, rapidly the barn temperature is risen to 45-<48 ℃, control wet-bulb temperature is at 37-38 ℃, steady temperature 11-12 hour; Be warming up to 50-52 ℃ then, keep wet-bulb temperature 37-<39 ℃, toast 11-12 hour, be warming up to 54-55 ℃ again, wet-bulb temperature 37-<39 ℃, heating up in steady temperature 11-12 hour enters drying muscle stage, and omnidistance wet-bulb temperature all can not be above requiring;
C. drying muscle stage: after tobacco leaf reaches the fixation requirement, rapidly dry-bulb temperature is risen to>65-68 ℃, wet-bulb temperature 39-<42 ℃, it is absolutely dry flame-out to be baked to the cigarette muscle, and moisture regain is a heatable brick bed down;
D. force moisture regain; After closing fire, treating that temperature is reduced to below 35-40 ℃ in the barn, is to quicken tobacco leaf conditioning, can add water on barn ground and carry out and force moisture regain, about amount of water 100kg, divides 3-4 adding, adds all portings of unlatching behind the water, and moves blower fan and get damp again; Also can open all portings when air humidity is big and blower fan gets damp again in morning, the moisture regain time is generally at 1.5-2 hour;
(3) the omnidistance blower fan of baking start-stop is discontinuously had suffered bake process and is mainly regulated with wet-bulb temperature, and dry-bulb temperature heats up must reach the requirement temperature as early as possible, prevents that dry-bulb temperature is fluctuated, prevents behind the tobacco leaf self-heating roasting bad.
7. tobacco flue-curing method according to claim 6 is characterized in that, wind speed is 0.4-0.78m/s between described leaf.
8. tobacco flue-curing method according to claim 6 is characterized in that, described blower fan nominal air quantity is 18500-32000m 3/ h.
CNB2004100308485A 2004-03-31 2004-04-07 Scattered leaf stacked tobacco-roasting house and its leaf roasting method CN1301674C (en)

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CN102793260A (en) * 2012-09-07 2012-11-28 贵州省烟草公司遵义市公司 Three-ladder seven-step method for baking scattered flue-cured tobacco leaves
CN102934835A (en) * 2012-12-07 2013-02-20 红塔烟草(集团)有限责任公司 Bulk-curing-bam curing method for improving curing quality of K326 tobacco
CN103099299B (en) * 2013-03-13 2015-06-17 云南烟草机械有限责任公司 Scattered tobacco leaf accumulating and baking air dividing board for bulk curing barn and manufacture method thereof
CN103598669B (en) * 2013-11-13 2015-12-09 贵州省烟草科学研究院 A kind of flue-cured tobacco falls apart leaf baking method
CN103829363B (en) * 2014-02-26 2015-08-12 中国农业科学院烟草研究所 A kind of flue-cured bulk curing barn cigarette that falls apart piles up the slow baking curing process of low humidity
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