CN101718723B - Tobacco shred pneumatic drying test unit - Google Patents
Tobacco shred pneumatic drying test unit Download PDFInfo
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- CN101718723B CN101718723B CN2009102275652A CN200910227565A CN101718723B CN 101718723 B CN101718723 B CN 101718723B CN 2009102275652 A CN2009102275652 A CN 2009102275652A CN 200910227565 A CN200910227565 A CN 200910227565A CN 101718723 B CN101718723 B CN 101718723B
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- cyclone separator
- tobacco shred
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- drying tube
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Abstract
The invention relates to a tobacco shred pneumatic drying test unit comprising a feed system, a drying pipe, a dropping device, a cyclone separator, an air return system, a steam generator, a heater and a data acquisition unit, wherein the humiture of a drying medium is controlled by the heater and the steam injection rate of the steam generator, the gas velocity of the drying medium in the drying pipe is controlled by the blowing rate of an air return fan, and the drying medium at the outlet is recycled after humidity is removed partly and fresh air is supplemented; material can be added in the drying pipe through the feed system at the upper part of the drying pipe and go downwards to be discharged by a discharge air lock after dropping into the dropping device at the bottom of the drying pipe or can be added into the drying pipe through the feed system at the lower part of the drying pipe and go upwards to be discharged by a discharge air lock after passing though the cyclone separator. The invention is characterized in that: with regard to tobacco shreds and the drying medium with a certain humiture, the unit can carry out tobacco shred pneumatic drying research in the modes of both gas-solid co-current contact and gas-solid countercurrent contact, form a wide range of drying conditions and has flexible and adjustable treatment capacity.
Description
Technical field
The present invention relates to tobacco processing equipment, specifically is a kind of tobacco shred pneumatic drying test unit, is the small test device that carries out the convection heat transfer' heat-transfer by convection drying at pipe tobacco under the mode of gas-solid following current or adverse current with the drying medium of certain humiture.
Background technology
The pneumatic conveying drying technology is the job operation of the dry tobacco leaf silk of domestic extensive employing at present.Pneumatic conveying drying utilizes thermal current at a high speed that solid particle to be dried is suspended in the fluid based on the convective drying mode, in air-flow is carried material is carried out drying, and its white heat area is big, the thermal efficiency is high.
In the pipe tobacco pneumatic conveying drying process, the humiture of drying medium, the drying property of pipe tobacco all can influence the water percentage and the interior quality thereof of baking back pipe tobacco.The way of contact (following current, adverse current) of gas-solid material in drying tube also can influence moisture in material and the drying medium two alternate mass transfer rate and the residence time of material in drying tube, thereby influences the drying effect of material.Research to this type of problem in the actual production process has inconvenience, and is big as the test specimen amount, may impact production run etc.Simultaneously, existing pipe tobacco pneumatic conveying dryer is the riser Pneumatic drying device of gas-solid following current contact, can't study the pneumatic conveying drying process under the gas-solid counter current contacting mode.Patent CN200968925Y has reported a kind of pipe tobacco Dual-Phrase Distribution of Gas olid test unit, but this device is the cold conditions device, can't be used for hot pipe tobacco pneumatic conveying drying The Characteristic Study down, can not operate under the mode of gas-solid counter current contacting simultaneously.
Summary of the invention
The present invention at existing lab setup and the deficiency of production equipment in scientific research, provides a kind of pipe tobacco Pneumatic drying device that uses just in the laboratory.This installs advantages of simple, and for the drying medium of pipe tobacco with certain humiture, this device can carry out the convection heat transfer' heat-transfer by convection drying study under the mode of the up contact of gas-solid following current, also can carry out the convection heat transfer' heat-transfer by convection drying study under the mode of gas-solid counter current contacting simultaneously.
The objective of the invention is to be achieved through the following technical solutions: tobacco shred pneumatic drying test unit of the present invention, comprise vertically disposed drying tube, the drying tube lower end is connected with feeder, the upper end is connected with cyclone separator, the bottom of feeder and cyclone separator is equipped with the discharging gas lock, on, two cover feed systems are separately positioned on the upper and lower of drying tube down, on the drying tube below the following feed system, offer the drying medium inlet, form closed circulation by the return air pipeline between air outlet on the cyclone separator and the drying medium inlet, and on the return air pipeline, be connected with return air fan in turn, new wind replenishes blower fan, steam generator, well heater and humidity discharging air door.
Among the present invention, be distributed with 2-5 humiture instrument connection at its differing heights of drying tube upper edge.Described return air fan is a frequency conversion fan, and its air quantity is at 0～1700m
3Adjustable continuously in the/h.Be connected by a bend pipe between described drying tube and the cyclone separator.
Described drying medium is the air that is heated to uniform temperature.
Principle of work of the present invention is as follows: the humiture of drying medium is controlled by the steam injection rate IR of well heater and steam generator, the gas speed of drying tube inner drying medium is controlled by the return air fan air quantity, enter air return system behind drying medium drying pipe, the cyclone separator, recycle through the part humidity discharging with after replenishing new wind; Under the drying mode of gas-solid counter current contacting, the feed system of pipe tobacco by drying tube top adds drying tube, and pipe inner drying medium adopts lower gas speed, and (0～3m/s), pipe tobacco is descending to be fallen into the feeder of drying tube bottom and discharge through the discharging gas lock; Under the gas-solid following current way of contact, the feed system of pipe tobacco by the drying tube bottom adds drying tube, and pipe inner drying medium adopts higher gas speed (greater than 3m/s), and the pipe tobacco cyclone separator of passing through on drying medium carries down separates and discharged by the discharging gas lock.
Tobacco shred pneumatic drying test unit provided by the invention, its advantage is:
1, for the drying medium of pipe tobacco with certain humiture, this device can carry out the research of pipe tobacco pneumatic conveying drying under the mode of gas-solid following current contact, also can carry out the research of pipe tobacco pneumatic conveying drying under the mode of gas-solid counter current contacting;
2, this device can form the drying condition of wide region, and the drying medium humiture can be regulated by well heater and steam generator respectively as required, and the dry materials time can be regulated by regulating return air fan air quantity change drying medium wind speed;
3, the treatment capacity of this device is adjustable flexibly in the 0-10kg/h scope.
Description of drawings
Accompanying drawing is a structural representation of the present invention
Among the figure: the last feed system of 1-, feed system under the 2-, 3-drying tube, 4-feeder, 5-discharging gas lock, the 6-cyclone separator, 7-discharging gas lock, 8-return air pipeline, 9-return air fan, 10-humidity discharging air door, the new wind of 11-replenishes blower fan, 12-steam generator, 13-well heater, 14-drying medium inlet.
Embodiment
The present invention is further described below in conjunction with accompanying drawing:
As shown in the figure: tobacco shred pneumatic drying test unit of the present invention, comprise vertically disposed drying tube 3, the drying tube lower end is connected with feeder 4, the upper end is connected with cyclone separator 6 by a bend pipe, the bottom of feeder 4 and cyclone separator 6 is respectively equipped with discharging gas lock 5 and 7, on, two cover feed systems 1 and 2 are separately positioned on the upper and lower of drying tube down, on the drying tube below the following feed system, offer drying medium inlet 14, form closed circulation by return air pipeline 8 between air outlet on the cyclone separator and the drying medium inlet, and on the return air pipeline, be connected with frequency conversion return air fan 9 in turn, new wind replenishes blower fan 11, steam generator 12, well heater 13 and humidity discharging air door 10.Be distributed with 2-5 humiture instrument connection at its differing heights of drying tube upper edge, the humiture tester is used to peg graft.After drying medium enters the cyclone separator discharge of passing through on the drying tube by inlet 14, through return air pipeline 8, return air fan 9, after the 10 part humidity dischargings of humidity discharging air door, the steam that new wind that replenishes with new wind blower fan 11 and steam generator 12 quantitatively spray into recycles after heater via 13 heating.Device is under gas-solid counter-current drying mode of operation, and material adds drying tube 3 by feed system 1, and the reinforced gas lock of feed system 2 and discharging gas lock 7 are closed condition.Drying medium adopts that (0～3m/s), pipe tobacco and drying medium be counter current contacting in drying tube 3, and pipe tobacco is descending to fall into feeder 4 and by 5 discharges of discharging gas lock than low gas velocity.Device is under gas-solid concurrent drying mode of operation, pipe tobacco adds drying tube 3 by feed system 2, the reinforced gas lock of feed system 1 and the discharging gas lock of feeder 45 are closed condition, drying medium adopts higher gas speed (greater than 3m/s), pipe tobacco and drying medium following current are up in the drying tube, after cyclone separator 6 separated, pipe tobacco was discharged by discharging gas lock 7.
Claims (4)
1. tobacco shred pneumatic drying test unit, it is characterized in that: comprise vertically disposed drying tube, the drying tube lower end is connected with feeder, the upper end is connected with cyclone separator, the bottom of feeder and cyclone separator is equipped with the discharging gas lock, on, down two cover feed systems be separately positioned on drying tube on, the bottom, on the drying tube below the following feed system, offer the drying medium inlet, form closed circulation by the return air pipeline between air outlet on the cyclone separator and the drying medium inlet, and on the return air pipeline, be connected with return air fan in turn, new wind replenishes blower fan, steam generator, well heater and humidity discharging air door.
2. tobacco shred pneumatic drying test unit according to claim 1 is characterized in that: be distributed with 2-5 humiture instrument connection at its differing heights of drying tube upper edge.
3. tobacco shred pneumatic drying test unit according to claim 1 is characterized in that: described return air fan is a frequency conversion fan, and its air quantity is at 0～1700m
3Adjustable continuously in the/h.
4. tobacco shred pneumatic drying test unit according to claim 1 is characterized in that: be connected by a bend pipe between drying tube and the cyclone separator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102275652A CN101718723B (en) | 2009-12-22 | 2009-12-22 | Tobacco shred pneumatic drying test unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102275652A CN101718723B (en) | 2009-12-22 | 2009-12-22 | Tobacco shred pneumatic drying test unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101718723A CN101718723A (en) | 2010-06-02 |
| CN101718723B true CN101718723B (en) | 2011-12-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102275652A Active CN101718723B (en) | 2009-12-22 | 2009-12-22 | Tobacco shred pneumatic drying test unit |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103364245B (en) * | 2013-07-25 | 2015-12-09 | 中国烟草总公司郑州烟草研究院 | Descending bed tobacco Rapid Thermal wet treater |
| CN106482498A (en) * | 2016-12-27 | 2017-03-08 | 文安县天华密度板有限公司 | A kind of Processes and apparatus of wood-based plate drying system environmental protection and energy saving |
| CN108802091A (en) * | 2018-06-28 | 2018-11-13 | 中山大学 | A kind of analysis experimental provision of material Airflow Drying Characteristic variation |
| CN110063514A (en) * | 2019-04-29 | 2019-07-30 | 广东中烟工业有限责任公司 | A kind of miniature air stream baking silk experimental provision |
| CN113028809B (en) * | 2021-04-13 | 2022-09-16 | 广东中烟工业有限责任公司 | Control method, system and equipment of airflow dryer |
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