CN103564632A - Method and device for controlling oxygen content in drum type cut tobacco drying process - Google Patents
Method and device for controlling oxygen content in drum type cut tobacco drying process Download PDFInfo
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- CN103564632A CN103564632A CN201210279441.0A CN201210279441A CN103564632A CN 103564632 A CN103564632 A CN 103564632A CN 201210279441 A CN201210279441 A CN 201210279441A CN 103564632 A CN103564632 A CN 103564632A
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Abstract
The invention relates to a method and a device for controlling the oxygen content in the drum type cut tobacco drying process. An oxygen-nitrogen separation system is added in front of the traditional drum fresh air quantity control device, and can be used for enabling the oxygen content of the gas entering a drying drum to be adjustable; two cut tobacco feeding gas-locking devices are respectively added at a drum cut tobacco inlet and a drum cut tobacco outlet, so that the oxygen content in the drum is avoided being influenced by the ambient air which permeates into the drum through an inlet and an outlet of the drum; an oxygen content detection device is added into a drum hot air moisture removal pipeline and can be used for detecting the oxygen content in the moisture removal hot air in real time; a proportion integration differentiation (PID) control unit is added, and can be used for automatically adjusting the oxygen-nitrogen separation system by comparing the detection result of the oxygen content in the moisture removal hot air with the set control target value of the oxygen content in the moisture removal hot air so as to control the oxygen content of the hot air entering the drum and finally realize the control accuracy and stability of the oxygen content in the moisture removal hot air.
Description
Technical field
The present invention relates to tobacco business production technology and equipment thereof, refer to especially a kind of method and device for index drum class tobacco shreds drying process oxygen content in tobacco processing course.
Background technology
Tobacco shreds drying operation is one of critical process in cigarette primary processing production process.In this operation, by barrel conduction heat transfer and the hot air convection two kinds of modes of conducting heat, pipe tobacco is heated heat up to lose moisture simultaneously, realize pipe tobacco loose, curling and increase the object of pipe tobacco filling capacity; Pipe tobacco, through being heated intensification, makes pipe tobacco produce certain chemical reaction simultaneously, improves taste and the sucking quality of pipe tobacco.The advantages such as drum apparatus has that treating capacity is large, flexible operation, expense are relatively cheap, become the major way of tobacco cutting process dry materials.
For after pipe tobacco being heated fast heat up, reduce moisture, barrel temperature and the dry-heat air temperature of conventional rollers class tobacco shreds drying device are often greater than 100 ℃.Correlative study shows, pipe tobacco, when being heated and heating up and lose moisture, a series of complicated chemical reactions that pipe tobacco flavor chemistry composition changes that affect can occur, as Maillard reaction etc.Result of study shows, owing to containing organic and Inorganic chemical substance in pipe tobacco chemical analysis, under certain temperature and reaction time condition, the chemical analysis that oxygen content size in tobacco shreds drying process produces after to tobacco shreds drying has considerable influence, and reaction produces different chemical analysis cigarette taste and sucking quality are had to significant impact.Therefore,, for stablizing and improve the aesthetic quality of cigarette product, the oxygen content of controlling in tobacco shreds drying process is particularly important.
As shown in Figure 3, the process heat elegance of conventional rollers class tobacco shreds drying device forms through over-heat-exchanger effect with the fresh air in environment.This cylinder class tobacco shreds drying is installed on the technique hot blast introduction pipeline of cylinder 5 and is provided with fresh wind air quantity controller 1 and hot blast temperature control device 2, the pipe tobacco entrance 3 of cylinder 5 and pipe tobacco outlet 4 are open type, because tobacco shreds drying process cylinder 5 is interior, can produce certain negative pressure, surrounding air is entered after mixing with technique hot blast in cylinder 5 and is acted on pipe tobacco by pipe tobacco entrance 3 and pipe tobacco outlet 4.Therefore, traditional cylinder class tobacco shreds drying equipment cannot be controlled tobacco shreds drying process oxygen content, in actual production process, cannot different dry oxygen content conditions be set according to different pipe tobacco supplied materials mass propertys, promote taste and the sucking quality of dry rear pipe tobacco.
Summary of the invention
For the deficiencies in the prior art part, the invention provides a kind of method and device for index drum class tobacco shreds drying process oxygen content.The method and device can be realized accurate and stable control of pipe tobacco roller drying process oxygen content, thereby stablize and improve taste and the sucking quality of dry rear pipe tobacco.
For achieving the above object, technical solution of the present invention is:
A kind of method for index drum class tobacco shreds drying process oxygen content, the method is according to the humidity discharging hot blast oxygen content recording at hot blast drum humidity discharging pipeline by the PID control module of a control humidity discharging hot blast oxygen content, compare computing with the humidity discharging hot blast Control for Oxygen Content desired value of setting, by controlling an oxygen nitrogen piece-rate system, realize and automatically regulate the oxygen content that enters hot blast in cylinder.
For a device for index drum class tobacco shreds drying process oxygen content, it is before fresh wind air quantity controller, to increase by an oxygen nitrogen piece-rate system, on hot blast drum humidity discharging pipeline, increases by an oxygen content detector; This oxygen content detector connects a PID control module, and this PID control module connects oxygen nitrogen piece-rate system simultaneously.
Further, pipe tobacco entrance and each increase of pipe tobacco outlet at cylinder has a gas locking device.
The usefulness of technique scheme is:
Compare with conventional rollers class tobacco shred drying method and device thereof, the present invention increases an oxygen nitrogen piece-rate system before the fresh wind air quantity controller of cylinder, and the gas oxygen content that can guarantee to enter in drying drum is adjustable; At cylinder pipe tobacco entrance and each gas lock increasing of pipe tobacco outlet, avoid because surrounding air affects the inner oxygen content of cylinder from the infiltration of cylinder gateway; The oxygen content detector increasing at hot blast drum humidity discharging pipeline, detects the oxygen content in humidity discharging hot blast in real time; The humidity discharging hot blast oxygen content PID control module of setting up can regulate oxygen nitrogen piece-rate system automatically, controls the oxygen content that enters hot blast in cylinder, finally realizes humidity discharging hot blast Control for Oxygen Content precision and stability.
Accompanying drawing explanation
Fig. 1 is the control principle schematic diagram of humidity discharging hot blast oxygen content of the present invention;
Fig. 2 is cylinder class tobacco shreds drying equipment hot blast control system schematic diagram of the present invention;
Fig. 3 is conventional rollers class tobacco shreds drying equipment hot blast control system schematic diagram.
The specific embodiment
The present invention is now described in conjunction with the accompanying drawings and embodiments.
A kind of method for index drum class tobacco shreds drying process oxygen content as shown in Figure 1, the method is according to the humidity discharging hot blast oxygen content recording at hot blast drum humidity discharging pipeline by the PID control module of a control humidity discharging hot blast oxygen content, compare computing with the humidity discharging hot blast Control for Oxygen Content desired value of setting, by controlling an oxygen nitrogen piece-rate system, realize and automatically regulate the oxygen content that enters hot blast in cylinder.
The device of a kind of index drum class tobacco shreds drying process oxygen content as shown in Figure 2, this is installed on the technique hot blast introduction pipeline of cylinder 10 and is provided with fresh wind air quantity controller 1 and hot blast temperature control device 2, and in oxygen nitrogen piece-rate system 5 of the front increase of fresh wind air quantity controller 1.This oxygen nitrogen piece-rate system 5 is the airborne oxygen of isolating environment and nitrogen at normal temperatures, and can automatically regulate the oxygen content in the gas that separation obtains, and guarantees that the gas oxygen content entering in drying drum 10 is adjustable.
The present invention also respectively increases a gas locking device 8,9 in pipe tobacco entrance 3 and the pipe tobacco outlet 4 of cylinder 10, avoids because surrounding air affects the inner oxygen content of cylinder from pipe tobacco entrance 3 and pipe tobacco outlet 4 infiltrations.
The present invention increases and has an oxygen content detector 7 on the hot blast humidity discharging pipeline of cylinder 10, detects in real time the oxygen content in humidity discharging hot blast.The PID control module 6 of the control humidity discharging hot blast oxygen content of this oxygen content detector connection one, this PID control module 6 connects oxygen nitrogen piece-rate system 5 simultaneously.The testing result of the humidity discharging hot blast oxygen content that this PID control module 6 can record according to oxygen content detector 7, by comparing computing with the humidity discharging hot blast Control for Oxygen Content desired value of setting, according to comparison operation result, automatically regulate oxygen nitrogen piece-rate system 5, control enters the oxygen content of cylinder 10 interior hot blasts, finally realizes humidity discharging hot blast Control for Oxygen Content precision and stability.
Embodiment mono-:
Get pipe tobacco after the chopping of A trade mark cigarette, by table 1 technological parameter, carry out respectively roller drying.
Table 1 embodiment mono-parameter setting
| Parameter name | Parameter 1 | Parameter 2 |
| Hot blast temperature, ℃ | 100 | 100 |
| Barrel temperature, ℃ | 130 | 130 |
| Fresh wind flow, kg/h | 2900 | 2900 |
| Mass flow, kg/h | 2000 | 2000 |
| Drum rotation speed, r/min | 12 | 12 |
| Fresh wind oxygen content, % | Do not control | 3 |
Evaluation: organize professional cigarette member of smoking, respectively to parameter 1, the pipe tobacco that parameter 2 is produced carries out sensory evaluation.Result shows, the aroma of tobacco shreds amount that the pipe tobacco that parameter 2 is produced is produced compared with parameter 1 is many, and assorted gas is few, and flue gas excitant weakens.Implementation result shows that tobacco shreds drying process oxygen content reduces, and is conducive to improve pipe tobacco mouthfeel and sucking quality.
Embodiment bis-:
Get pipe tobacco after the chopping of B trade mark cigarette, by table 2 technological parameter, under the condition of oxygen content 1%-5%, carry out respectively roller drying.
Table 2 embodiment bis-parameter settings
| Parameter name | Parameter 1 | Parameter 2 | Parameter 3 | |
|
| Hot blast temperature, ℃ | 100 | 100 | 100 | 100 | 100 |
| Barrel temperature, ℃ | 130 | 130 | 130 | 130 | 130 |
| Fresh wind flow, kg/h | 2900 | 2900 | 2900 | 2900 | 2900 |
| Mass flow, kg/h | 2000 | 2000 | 2000 | 2000 | 2000 |
| Drum rotation speed, r/min | 12 | 12 | 12 | 12 | 12 |
| Fresh wind oxygen content, % | 1 | 2 | 3 | 4 | 5 |
Evaluation: organize professional cigarette member of smoking, the pipe tobacco of respectively 5 parameters being produced carries out sensory evaluation.Result shows, B trade mark pipe tobacco, in parameter 2, is dried under the condition that Control for Oxygen Content is 2%, and mouthfeel and the sucking quality of pipe tobacco are best.Therefore, B trade mark cigarette is produced, dry run oxygen content should be set to 2%.
Claims (3)
1. the method for index drum class tobacco shreds drying process oxygen content, it is characterized in that: the method is according to the humidity discharging hot blast oxygen content recording at hot blast drum humidity discharging pipeline by the PID control module of a control humidity discharging hot blast oxygen content, compare computing with the humidity discharging hot blast Control for Oxygen Content desired value of setting, by controlling an oxygen nitrogen piece-rate system, realize and automatically regulate the oxygen content that enters hot blast in cylinder.
2. for a device for index drum class tobacco shreds drying process oxygen content, it is characterized in that: this device is before fresh wind air quantity controller, to increase by an oxygen nitrogen piece-rate system, on hot blast drum humidity discharging pipeline, increases by an oxygen content detector; This oxygen content detector connects a PID control module, and this PID control module connects oxygen nitrogen piece-rate system simultaneously.
3. a kind of device for index drum class tobacco shreds drying process oxygen content as claimed in claim 2, is characterized in that: pipe tobacco entrance and each increase of pipe tobacco outlet at cylinder have a gas locking device.
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| CN201210279441.0A CN103564632A (en) | 2012-08-08 | 2012-08-08 | Method and device for controlling oxygen content in drum type cut tobacco drying process |
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| CN201210279441.0A CN103564632A (en) | 2012-08-08 | 2012-08-08 | Method and device for controlling oxygen content in drum type cut tobacco drying process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103767056A (en) * | 2014-02-21 | 2014-05-07 | 安徽中烟工业有限责任公司 | Online expanding and drying device of cut tobacco |
| CN107726833A (en) * | 2017-11-10 | 2018-02-23 | 重庆市贵金象炭黑有限责任公司 | A kind of drying system oxygen content coordinated control system and its method |
| CN108720072A (en) * | 2018-05-30 | 2018-11-02 | 滁州卷烟材料厂 | A kind of drying means of big moisture tobacco leaf drying throwing |
| CN110115393A (en) * | 2019-06-11 | 2019-08-13 | 红云红河烟草(集团)有限责任公司 | Low-oxygen redrying process |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107726833A (en) * | 2017-11-10 | 2018-02-23 | 重庆市贵金象炭黑有限责任公司 | A kind of drying system oxygen content coordinated control system and its method |
| CN108720072A (en) * | 2018-05-30 | 2018-11-02 | 滁州卷烟材料厂 | A kind of drying means of big moisture tobacco leaf drying throwing |
| CN110115393A (en) * | 2019-06-11 | 2019-08-13 | 红云红河烟草(集团)有限责任公司 | Low-oxygen redrying process |
| CN110115393B (en) * | 2019-06-11 | 2021-09-28 | 红云红河烟草(集团)有限责任公司 | Low-oxygen redrying process |
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Application publication date: 20140212 |