CN102631017B - Cut-tobacco drier based on independent tobacco cutting characteristics of papermaking method reconstituted tobacco and cut-tobacco drying control method thereof - Google Patents

Cut-tobacco drier based on independent tobacco cutting characteristics of papermaking method reconstituted tobacco and cut-tobacco drying control method thereof Download PDF

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CN102631017B
CN102631017B CN201210126975.XA CN201210126975A CN102631017B CN 102631017 B CN102631017 B CN 102631017B CN 201210126975 A CN201210126975 A CN 201210126975A CN 102631017 B CN102631017 B CN 102631017B
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tobacco
cut
hot blast
air
humidity discharging
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CN102631017A (en
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李钰靓
赵云峰
方柏杨
金文良
冯丰
钱永安
袁根洪
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China Tobacco Zhejiang Industrial Co Ltd
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China Tobacco Zhejiang Industrial Co Ltd
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Abstract

The invention relates to the related technical field of tobacco production, and in particular relates to a cut-tobacco drier based on the independent tobacco cutting characteristics of papermaking method reconstituted tobacco and a cut-tobacco drying control method thereof. The cut-tobacco drier comprises a barrel, a moisture discharge rotary net, a cut-tobacco drying heating air system, a humidifying air system and a control system. Through the control method provided by the invention, the traditional cut-tobacco drier is completely suitable for the papermaking method reconstituted tobacco after independent tobacco cutting, the control aim of 12-13% of moisture content at exit is achieved, and the independent tobacco cutting quality and the effective utilization rate of the papermaking method reconstituted tobacco can be effectively improved. The low-intensity processing mode can effectively maintain the physical characteristics and chemical characteristics of the papermaking method reconstituted tobacco after independent tobacco cutting, the sensory characteristic is effectively enhanced, and relatively high friability and relatively low doubling rate are realized; and thus the reconstituted tobacco can be blended with other natural tobacco, and a firm guarantee is provided for the grouping processing of tobacco primary process and flexible processing production new mode.

Description

A kind of cut-tobacco drier and a baking silk control method thereof that becomes separately a characteristic based on papermaking-method reconstituted tobaccos
Technical field
The present invention relates to the correlative technology field that tobacco produces, be specifically related to a kind of cut-tobacco drier and a baking silk control method thereof that becomes separately a characteristic based on papermaking-method reconstituted tobaccos.
Background technology
Papermaking-method reconstituted tobaccos involved in the present invention is one of primary raw material of cigarette, and it has following features: 1. can effectively improve raw tobacco material comprehensive utilization ratio; 2. can respond fast for the personalization of Cigarette Industrial Enterprise, customization and the demand such as functional; 3. be conducive to cigarette product reducing tar and reducing harm etc.Meanwhile, along with State Bureau in recent years carries forward vigorously reconstituted tobacco autonomous innovation, reconstituted tobacco output constantly increases, and ratio shared in composition of raw materials is also in continuous increase.Existing filament forming process for paper making method-based reconstituted tobacco is generally according to process requirements, papermaking-method reconstituted tobaccos and natural tobacco leaf is mixed, then make pipe tobacco through moisture regain, reinforced, chopping, the series of processes such as dry.
Above-mentioned hybrid process method, the key equipment adopting is as all identical with the equipment that natural tobacco leaf machining adopts in chopping equipment, moisture regain equipment, drying equipment.But, due to papermaking-method reconstituted tobaccos and natural tobacco leaf in itself (physical characteristic, chemical characteristic, organoleptic attribute) tool be very different, above-mentioned hybrid process mode generally has following shortcoming: 1. because reconstituted tobacco will be through high-intensity humidification and the processing technology of drying, in process, easily make broken, produce airborne dust, affect the healthy of production environment and worker at the production line; 2. reconstituted tobacco in process, produce make broken, formula precision can not get ensure, cause adverse effect to pipe tobacco formula, cigarette quality.3. in high-intensity process, the flavor component of reconstituted tobacco scatters and disappears larger, and using character declines.Based on so a kind of present situation, the defect of bringing with tobacco leaf mixing throwing in order to overcome reconstituted tobacco, simultaneously also in order to adapt to the technological requirement of present throwing grouping Processing, flexible processing, the processing mode that a kind of papermaking-method reconstituted tobaccos becomes separately silk at home tobacco business grows up gradually.After papermaking-method reconstituted tobaccos becomes silk separately, according to its characteristic, if it is high-intensity dry to continue to adopt traditional cut-tobacco drier control technique and method (control block diagram as shown in Figure 1) to carry out it, must make dried pipe tobacco lose its most physical characteristic and organoleptic attribute (and irreversible), moisture content declines to a great extent (dropping to 9-10% from 13-15%), thereby can not meet the demand of raw material of cigarette completely.Can reach a conclusion, that is, control technique and the method for traditional cut-tobacco drier is not suitable for papermaking-method reconstituted tobaccos and becomes separately silk drying process afterwards.
Chinese patent " a kind of thread baking thread process control method " (CN101254020A) discloses a kind of thread baking thread process control method, it is characterized in that: whole baking silk process is divided into head, middle part, afterbody three phases.Can overcome non-linear in former drying process control procedure and the impact of large time delay on baking silk moisture content of outlet, antijamming capability is strong, makes to dry the control of silk moisture content of outlet and has reached higher precision.
Chinese patent " cylinder dries the variable parameter control method of silk process " (CN102331712A) discloses a kind of variable parameter control method of cylinder baking silk, it is characterized in that: outlet moisture control adopts the variable parameter PID control method with dead band.Can effectively solve and dry non-linear in silk process and the large impact on outlet moisture content afterwards, strengthen system rejection to disturbance ability, improve pipe tobacco outlet moisture control precision.
Above two Chinese patents, the control method of a kind of cut-tobacco drier separately has all been proposed, all can realize by its distinctive control method the control target of its pipe tobacco outlet moisture content, but, all have the following disadvantages: be 1. for natural tobacco leaf or containing a kind of cut-tobacco drier control method of the formula tobacco leaf of papermaking-method reconstituted tobaccos; 2. be that the high strength of not considering cut-tobacco drier control method traditional in this macroscopic view is processed the impact that physical characteristic, chemical characteristic, the organoleptic attribute of the papermaking-method reconstituted tobaccos on independent chopping cause; 3. be not propose a kind of baking silk control method that is specially adapted for papermaking-method reconstituted tobaccos and becomes separately a characteristic.
Chinese patent " filament forming process for paper making method-based reconstituted tobacco and equipment thereof " (CN101828762A) discloses a kind of filament forming process for paper making method-based reconstituted tobacco and equipment thereof, for papermaking-method reconstituted tobaccos manufacture and the existing deficiency of production application technique and a kind of new filament forming process for paper making method-based reconstituted tobacco and the equipment thereof that provide.Mentioned technique and equipment thereof can solve the problem that papermaking-method reconstituted tobaccos is difficult to become separately silk.
Chinese patent " a kind of independent technology for making tobacco threds and equipment based on papermaking-method reconstituted tobaccos processing characteristics " (CN102178337A) discloses a kind of independent technology for making tobacco threds and equipment based on papermaking-method reconstituted tobaccos processing characteristics, popularity for papermaking-method reconstituted tobaccos supplied materials provides a kind of new reconstituted tobacco technology for making tobacco threds and equipment with its processing characteristics, the technology and equipment of this invention can fill reconstituted tobacco to case and carry out independent throwing for its processing characteristics, can improve the effective rate of utilization of reconstituted tobacco, be conducive to mix and join with other pipe tobaccos.
Above two Chinese patents, have all mentioned related drying process in the independent during Primary Processing of papermaking-method reconstituted tobaccos, but all have the following disadvantages: a conception of species of 1. only having mentioned the drying process in the independent during Primary Processing of papermaking-method reconstituted tobaccos; 2. do not relate to a kind of special in the required a kind of special cut-tobacco drier control method of the independent Cheng Sihou drying process of papermaking-method reconstituted tobaccos.
Summary of the invention
In order to solve above-mentioned technical problem, an object of the present invention is to provide a kind of cut-tobacco drier that becomes separately a characteristic based on papermaking-method reconstituted tobaccos, cut-tobacco drier of the present invention can effectively improve papermaking-method reconstituted tobaccos become separately silk quality and effective rate of utilization.Another object of the present invention is to provide the baking silk method that adopts above-mentioned cut-tobacco drier.
In order to realize first above-mentioned object, the present invention has adopted following technical scheme:
A kind of cut-tobacco drier that becomes separately a characteristic based on papermaking-method reconstituted tobaccos, this cut-tobacco drier comprises that cylindrical shell, humidity discharging turn net, baking silk adds hot-air system, humidification wind system and control system, the front end of cylindrical shell is provided with air inlet, humidity discharging turns net and is arranged on the rear end of cylindrical shell, humidity discharging turns and is provided with humidity discharging airduct on the net, described baking silk adds hot-air system and comprises heat exchanger, air-heater and airduct, airduct is collected the hot blast through heat-exchanger surface, described air-heater is arranged on airduct, and airduct is connected to cylindrical shell; Described humidification wind system comprises vapour source, and vapour source is connected to cut-tobacco drier hot blast air main by the first jet chimney is set, for hot blast provides auxiliary humidification; Described control system comprises control module, hot blast temperature sensor, air velocity transducer, infrared moisture meter, B/P EGR Back Pressure Transducer EGR and humidity discharging electropneumatic valve positioner, and hot blast temperature sensor, air velocity transducer, infrared moisture meter, B/P EGR Back Pressure Transducer EGR and humidity discharging electropneumatic valve positioner are all electrically connected with control module; Described hot blast temperature sensor and air velocity transducer are arranged on the cut-tobacco drier hot blast air main of the first jet chimney rear end, hot blast temperature sensor hot blast temperature measured value is incorporated into control module, and the mode that adopts PID to control is carried out feedback compensation to realize the automatic control to cylindrical shell hot blast temperature; Described infrared moisture meter is arranged on the discharging opening of cylindrical shell, the actual moisture content of pipe tobacco of infrared moisture meter feedback, control module calculates offsets the needed hot blast air quantity of moisture content deviation, and provide the controlling value of output valve as blower fan, the value of feedback of described air velocity transducer regulates the hot blast air quantity that enters cylindrical shell automatically, makes the speed of thermal convection current in cylindrical shell occur correspondingly to change; Described B/P EGR Back Pressure Transducer EGR is arranged on humidity discharging airduct, and on the humidity discharging airduct of B/P EGR Back Pressure Transducer EGR rear end, humidity discharging electropneumatic valve positioner is set, humidity discharging electropneumatic valve positioner and control module are electrically connected, in the situation that entering in cylindrical shell hot blast air quantity and changing, by the value of feedback of B/P EGR Back Pressure Transducer EGR, automatically control the aperture of humidity discharging electropneumatic valve positioner.
As further improvement, described vapour source is connected to heat exchanger by the second jet chimney and provides thermal source for heat exchanger, and the first jet chimney and the second jet chimney are respectively equipped with Pneumatic diaphragm valve, and the end of the second jet chimney is provided with heat exchanger drain valve.
As further improvement, the end of described airduct is divided into humidity discharging and turns net and add warm-air pipe, humidity discharging and turn the clean airduct of net and cut-tobacco drier hot blast air main, cut-tobacco drier hot blast air main is connected to air inlet, and humidity discharging turns net and adds warm-air pipe and humidity discharging and turn the clean airduct of net and be all connected to humidity discharging and turn net.
As further improvement, described air-heater is provided with frequency converter, and frequency converter and described control module are electrically connected, and described frequency converter can adopt Siemens MM Series Frequency Converter or Danfoss VLT and FC Series Frequency Converter.
As further improvement, described humidity discharging electropneumatic valve positioner can adopt E+H or Korea S Yongtai YT series electropneumatic valve positioner.
As further improvement, described cut-tobacco drier can form via KLK 2 cut-tobacco driers of German HAUNI company or the transformation of Italian COMAS cut-tobacco drier.
In order to realize second above-mentioned object, the present invention has adopted following technical scheme:
A baking silk method that becomes separately a characteristic based on papermaking-method reconstituted tobaccos, the method adopts above-mentioned cut-tobacco drier, and the step of described baking silk method is as follows:
1) preheating cylindrical shell first, sets drying cylinder rotating speed 5 ~ 7rpm, and hot blast temperature is set as 55 ~ 65 degree, and air-heater frequency setting is 20%, and humidity discharging electropneumatic valve positioner is adjusted automatically according to B/P EGR Back Pressure Transducer EGR value of feedback, moisture-eliminating blower frequency 90%;
2) after 8 minutes, system enters normal production status, and drying cylinder speed setting is 7 ~ 9rpm, and air-heater frequency setting is 60%, keeps hot blast temperature 55 ~ 65 degree constant, and moisture-eliminating blower frequency 90% is constant;
3), under the operating mode in normal production status, dry front belt and claim charging after 10 ~ 20 seconds at cut-tobacco drier, open the first jet chimney, time delay was closed after 150 ~ 200 seconds, removed captacula; By the value of feedback of outlet moisture content of cut tobaccos, air-heater frequency and humidity discharging electropneumatic valve positioner automatically adjust according to hot blast blast volume controller and wind power balance controller, and in conjunction with feedforward controller, stablize the control accuracy of cut-tobacco drier;
4) before drying, belt claims, after cutout, to close heat exchanger, reduces air-heater frequency to 20%, and setting drying cylinder rotating speed is 8 ~ 12rpm, and time delay opens the first jet chimney after 70 ~ 90 seconds, closes removal tailfiber after 150 ~ 200 seconds.
The present invention is directed to the physical characteristic, chemical characteristic, organoleptic attribute of the independent Cheng Sihou of papermaking-method reconstituted tobaccos and a kind of new cut-tobacco drier control method that becomes separately a characteristic based on papermaking-method reconstituted tobaccos is provided.Cut-tobacco drier involved in the present invention can make traditional cut-tobacco drier be applicable to the papermaking-method reconstituted tobaccos of independent Cheng Sihou, it is a kind of low intensive processing mode, can effectively improve quality and effective rate of utilization that papermaking-method reconstituted tobaccos becomes separately silk, thoroughly solve the excessive problem of traditional cut-tobacco drier control method amount of drying, accurately realize cut-tobacco drier inlet feed moisture content 13-15%, the control target of outlet material moisture content 12-13%.This low intensive processing mode can make the physical characteristic of the independent Cheng Sihou of papermaking-method reconstituted tobaccos and chemical characteristic effectively be kept, organoleptic attribute is effectively promoted, possess again good laxity and lower cake silk rate simultaneously, can more be conducive to itself and other mixing of natural tobacco leaf joins, more adapt to the technological requirement of throwing grouping Processing, flexible processing, there is industry generality, be applicable to the drying process of the independent Cheng Sihou of papermaking-method reconstituted tobaccos.
Brief description of the drawings
Fig. 1 is traditional cut-tobacco drier control block diagram.
Fig. 2 is that control method involved in the present invention is carried out improved cut-tobacco drier equipment schematic.
Detailed description of the invention
Below in conjunction with accompanying drawing and specific embodiment, the invention will be further described.
A kind of cut-tobacco drier that becomes separately a characteristic based on papermaking-method reconstituted tobaccos as shown in Figure 2, this cut-tobacco drier comprises that cylindrical shell 16, humidity discharging turn net 19, baking silk adds hot-air system, humidification wind system and control system.The front end of cylindrical shell 16 is provided with air inlet, humidity discharging turns net 19 and is arranged on the rear end of cylindrical shell 16, humidity discharging turns net 19 and is provided with humidity discharging airduct 20, described baking silk adds hot-air system and comprises heat exchanger 7, air-heater 8 and airduct 3, airduct 3 is collected the hot blast through over-heat-exchanger 7 surfaces, described air-heater 8 is arranged on airduct 3, and described air-heater 8 is provided with frequency converter, and described frequency converter can adopt Siemens MM Series Frequency Converter or Danfoss VLT and FC Series Frequency Converter.The end of airduct 3 is divided into humidity discharging and turns net and add warm-air pipe 10, humidity discharging and turn the clean airduct 11 of net and cut-tobacco drier hot blast air main 12, cut-tobacco drier hot blast air main 12 is connected to the air inlet of cylindrical shell 16, and humidity discharging turns net and adds warm-air pipe 10 and humidity discharging and turn the clean airduct 11 of net and be all connected to humidity discharging and turn net 19.Described humidification wind system comprises vapour source 2, vapour source 2 is connected to cut-tobacco drier hot blast air main 12 by the first jet chimney 13 is set, for hot blast provides auxiliary humidification, described vapour source 2 is connected to heat exchanger 7 by the second jet chimney 21 and provides thermal source for heat exchanger 7, the end that the first jet chimney 13 and the second jet chimney 21 are respectively equipped with Pneumatic diaphragm valve 5,6, the second jet chimneys 21 is provided with heat exchanger drain valve 9.
Control system hardware configuration aspect, all adopt new hardware configuration, comprise and add independently control cabinet and man-machine interface, be specifically designed to the control of operation cut-tobacco drier workshop section, Control System Software is completed by Siemens PLC C specialty programming software STEP7, and human interface software is completed by Siemens WinCC.Control system comprises control module, hot blast temperature sensor 14, air velocity transducer 15, infrared moisture meter, B/P EGR Back Pressure Transducer EGR 17 and humidity discharging electropneumatic valve positioner 18, hot blast temperature sensor 14, air velocity transducer 15, infrared moisture meter, B/P EGR Back Pressure Transducer EGR 17 and humidity discharging electropneumatic valve positioner 18 are all electrically connected with control module, and control module and described frequency converter are electrically connected.Described hot blast temperature sensor 14 and air velocity transducer 15 are arranged on the cut-tobacco drier hot blast air main 12 of the first jet chimney 13 rear ends, hot blast temperature sensor 14 hot blast temperature measured values are incorporated into control module, and the mode that adopts PID to control is carried out feedback compensation to realize the automatic control to cylindrical shell 16 hot blast temperatures.According to different process sections, set different hot blast temperatures and drying cylinder rotating speed, and in this segment process process, keep these two physical parameters constant.For not affecting the dust removing effects of whole line, humidity discharging (dedusting) blower fan frequency remains unchanged always.
Described infrared moisture meter is arranged on the discharging opening (not demonstrating in Fig. 2) of cylindrical shell 16, the actual moisture content of pipe tobacco of infrared moisture meter feedback, control module calculates offsets the needed hot blast air quantity of moisture content deviation, and provide the controlling value of output valve as air-heater 8, the value of feedback of described air velocity transducer 15 regulates the hot blast air quantity that enters cylindrical shell 16 automatically, make the speed of cylindrical shell 16 interior thermal convection currents occur correspondingly to change, by changing the wind speed of hot blast, increase or reduce the hot blast air quantity that enters drying cylinder, the variation of stabilization of export moisture content of cut tobaccos, and in conjunction with being based upon the feedforward controller for entrance flow of tobacco and moisture content designed on lot of experimental data basis, the variation of response entrance moisture content rapidly.
Described B/P EGR Back Pressure Transducer EGR 17 is arranged on humidity discharging airduct 20, and on the humidity discharging airduct 20 of B/P EGR Back Pressure Transducer EGR 17 rear ends, humidity discharging electropneumatic valve positioner 18 being set, humidity discharging electropneumatic valve positioner 18 can adopt E+H or Korea S Yongtai YT series electropneumatic valve positioner 18.Humidity discharging electropneumatic valve positioner 18 is electrically connected with control module, in the situation that entering the interior hot blast air quantity variation of cylindrical shell 16, wind power balance in drying cylinder is broken, at this moment the actual value that the B/P EGR Back Pressure Transducer EGR 17 of installing according to humidity discharging air door place feeds back, design wind power balance controller regulates rapidly the aperture of humidity discharging electropneumatic valve positioner 18, re-establish new wind power balance system, avoid the fluctuation of wind power balance state in drying cylinder, affect the control accuracy of cut-tobacco drier.
Become separately the implementation procedure of baking silk section production process control method involved in the present invention as example further describes of a production line (dry front scale flow 2000kg/H, adopt improved HAUNI KLK2 series cut-tobacco drier) below taking certain factory's papermaking-method reconstituted tobaccos.
First, preheating cylindrical shell 16, set drying cylinder rotating speed 6rpm, the steam pressure that enters heat exchanger 7 is 0.45Mpa, hot blast temperature is set as 60 degree, air-heater 8 frequency settings are 20%, and the aperture of humidity discharging electropneumatic valve positioner 18 is adjusted automatically according to B/P EGR Back Pressure Transducer EGR 17 values of feedback, moisture-eliminating blower 8 frequencies 90%.After 8 minutes, system enters normal production status, and drying cylinder speed setting is 8rpm, and air-heater 8 frequency settings are 60%, keeps hot blast temperature 60 to spend constant, and moisture-eliminating blower frequency 90% is constant.
Under operating mode at cut-tobacco drier in normal production status, before drying, belt claims charging after 15 seconds, opens auxiliary humidification steam pipe, and time delay was closed after 180 seconds, produced captacula 4kg.By the value of feedback of outlet moisture content of cut tobaccos, air-heater 8 frequencies and humidity discharging electropneumatic valve positioner 18 automatically adjust according to hot blast blast volume controller and wind power balance controller, and in conjunction with feedforward controller, stablize the control accuracy of cut-tobacco drier.
Before drying, belt claims, after cutout, to adopt the Pneumatic diaphragm valve 6 of second jet chimney of closing heat exchanger 7 front ends, reduces air-heater 8 frequencies to 20%, setting drying cylinder rotating speed is 10rpm, and time delay opens auxiliary humidification steam pipe membrane valve after 80 seconds, after 180 seconds, close, produce the about 6kg of tailfiber.
Original HAUNI KLK 2 cut-tobacco drier control methods are not because be suitable for the drying process of the independent Cheng Sihou of papermaking-method reconstituted tobaccos completely, therefore the technology controlling and process level of its process parameter control level and control method of the present invention does not have comparativity.
Papermaking-method reconstituted tobaccos becomes separately HAUNI KLK 2 cut-tobacco driers of controlling through the control method the present invention relates to after silk, its outlet material moisture content can guarantee to be controlled at 12-13%, its mean standard deviation is within 0.1%, reaches the technology controlling and process index of this factory completely.
Meanwhile, control method involved in the present invention has become low-intensity by the processing characteristics of cut-tobacco drier from high strength, and increase has designed auxiliary humidification steam pipe, therefore, from the operational effect of whole system, a kind of cut-tobacco drier involved in the present invention and control method thereof are applicable to the drying process of the independent Cheng Sihou of papermaking-method reconstituted tobaccos completely, and the quantity of over-dried cut tobacco has had reduction significantly, substantially captacula amount can be controlled in 5kg, and tailfiber amount can be controlled in 8kg.

Claims (5)

1. one kind becomes separately the cut-tobacco drier of a characteristic based on papermaking-method reconstituted tobaccos, this cut-tobacco drier comprises cylindrical shell (16), humidity discharging turns net (19), dry silk and add hot-air system, humidification wind system and control system, the front end of cylindrical shell (16) is provided with air inlet, humidity discharging turns net (19) and is arranged on the rear end of cylindrical shell (16), humidity discharging turns net (19) and is provided with humidity discharging airduct (20), it is characterized in that: described baking silk adds hot-air system and comprises heat exchanger (7), air-heater (8) and airduct (3), airduct (3) is collected the hot blast through over-heat-exchanger (7) surface, described air-heater (8) is arranged on airduct (3), airduct (3) is connected to cylindrical shell (16), described humidification wind system comprises vapour source (2), and vapour source (2) is connected to cut-tobacco drier hot blast air main (12) by the first jet chimney (13) is set, for hot blast provides auxiliary humidification, described control system comprises control module, hot blast temperature sensor (14), air velocity transducer (15), infrared moisture meter and B/P EGR Back Pressure Transducer EGR (17), and hot blast temperature sensor (14), air velocity transducer (15), infrared moisture meter, B/P EGR Back Pressure Transducer EGR (17), humidity discharging electropneumatic valve positioner (18) are all electrically connected with control module, described hot blast temperature sensor (14) and air velocity transducer (15) are arranged on the cut-tobacco drier hot blast air main (12) of the first jet chimney (13) rear end, hot blast temperature sensor (14) hot blast temperature measured value is incorporated into control module, and the mode that adopts PID to control is carried out feedback compensation to realize the automatic control to cylindrical shell (16) hot blast temperature, described infrared moisture meter is arranged on the discharging opening of cylindrical shell (16), the actual moisture content of pipe tobacco of infrared moisture meter feedback, control module calculates offsets the needed hot blast air quantity of moisture content deviation, and provide the controlling value of output valve as air-heater (8), the value of feedback of described air velocity transducer (15) regulates the hot blast air quantity that enters cylindrical shell (16) automatically, makes the speed of the interior thermal convection current of cylindrical shell (16) occur correspondingly to change, described B/P EGR Back Pressure Transducer EGR (17) is arranged on humidity discharging airduct (20), and on the humidity discharging airduct (20) of B/P EGR Back Pressure Transducer EGR (17) rear end, humidity discharging electropneumatic valve positioner (18) is set, humidity discharging electropneumatic valve positioner (18) is electrically connected with control module, in the situation that entering in cylindrical shell (16) hot blast air quantity and changing, by the value of feedback of B/P EGR Back Pressure Transducer EGR (17), automatically control the aperture of humidity discharging electropneumatic valve positioner (18).
2. a kind of cut-tobacco drier that becomes separately a characteristic based on papermaking-method reconstituted tobaccos according to claim 1, it is characterized in that: described vapour source (2) is connected to heat exchanger (7) by the second jet chimney (21) and provides thermal source for heat exchanger (7), the first jet chimney (13) and the second jet chimney (21) are respectively equipped with Pneumatic diaphragm valve (5,6), and the end of the second jet chimney (21) is provided with heat exchanger drain valve (9).
3. a kind of cut-tobacco drier that becomes separately a characteristic based on papermaking-method reconstituted tobaccos according to claim 1, is characterized in that: air-heater (8) is provided with frequency converter, and frequency converter and described control module are electrically connected.
4. a kind of cut-tobacco drier that becomes separately a characteristic based on papermaking-method reconstituted tobaccos according to claim 3, is characterized in that: described frequency converter adopts Siemens MM Series Frequency Converter or Danfoss VLT and FC Series Frequency Converter.
5. a kind of cut-tobacco drier that becomes separately a characteristic based on papermaking-method reconstituted tobaccos according to claim 1, is characterized in that: described humidity discharging electropneumatic valve positioner (18) adopts E+H or Korea S Yongtai YT series electropneumatic valve positioner.
CN201210126975.XA 2012-04-27 2012-04-27 Cut-tobacco drier based on independent tobacco cutting characteristics of papermaking method reconstituted tobacco and cut-tobacco drying control method thereof Active CN102631017B (en)

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