CN110663984A - Shaping drying system of special thick liquid method reconstituted tobacco of cigarette is not burnt in heating - Google Patents
Shaping drying system of special thick liquid method reconstituted tobacco of cigarette is not burnt in heating Download PDFInfo
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- CN110663984A CN110663984A CN201911097166.9A CN201911097166A CN110663984A CN 110663984 A CN110663984 A CN 110663984A CN 201911097166 A CN201911097166 A CN 201911097166A CN 110663984 A CN110663984 A CN 110663984A
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- 238000001035 drying Methods 0.000 title claims abstract description 118
- 241000208125 Nicotiana Species 0.000 title claims abstract description 116
- 235000002637 Nicotiana tabacum Nutrition 0.000 title claims abstract description 116
- 238000010438 heat treatment Methods 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 32
- 235000019504 cigarettes Nutrition 0.000 title claims abstract description 30
- 238000007493 shaping process Methods 0.000 title claims description 5
- 239000007788 liquid Substances 0.000 title description 3
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 43
- 239000010959 steel Substances 0.000 claims abstract description 43
- 238000003860 storage Methods 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims abstract description 34
- 238000007599 discharging Methods 0.000 claims abstract description 19
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 238000004804 winding Methods 0.000 claims abstract description 17
- 239000000779 smoke Substances 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 54
- 239000003795 chemical substances by application Substances 0.000 claims description 19
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 13
- 239000007921 spray Substances 0.000 claims description 13
- 238000003756 stirring Methods 0.000 claims description 12
- MNNHAPBLZZVQHP-UHFFFAOYSA-N diammonium hydrogen phosphate Chemical compound [NH4+].[NH4+].OP([O-])([O-])=O MNNHAPBLZZVQHP-UHFFFAOYSA-N 0.000 claims description 10
- 229910000388 diammonium phosphate Inorganic materials 0.000 claims description 10
- 235000019838 diammonium phosphate Nutrition 0.000 claims description 10
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 9
- 238000005096 rolling process Methods 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 6
- 235000011187 glycerol Nutrition 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 abstract description 6
- 239000000126 substance Substances 0.000 abstract description 5
- 230000000391 smoking effect Effects 0.000 abstract 1
- 239000002002 slurry Substances 0.000 description 21
- 235000019505 tobacco product Nutrition 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000000465 moulding Methods 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- 230000018044 dehydration Effects 0.000 description 5
- 238000006297 dehydration reaction Methods 0.000 description 5
- 239000000835 fiber Substances 0.000 description 5
- 239000000796 flavoring agent Substances 0.000 description 4
- 235000019634 flavors Nutrition 0.000 description 4
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 238000000889 atomisation Methods 0.000 description 3
- 230000009975 flexible effect Effects 0.000 description 3
- 235000013305 food Nutrition 0.000 description 3
- 238000004513 sizing Methods 0.000 description 3
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 2
- 235000017491 Bambusa tulda Nutrition 0.000 description 2
- 241001330002 Bambuseae Species 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 2
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 2
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 2
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 239000011425 bamboo Substances 0.000 description 2
- 235000009120 camo Nutrition 0.000 description 2
- 235000005607 chanvre indien Nutrition 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000011487 hemp Substances 0.000 description 2
- 210000004379 membrane Anatomy 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 206010053615 Thermal burn Diseases 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
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- 239000003086 colorant Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003571 electronic cigarette Substances 0.000 description 1
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Images
Classifications
-
- A—HUMAN NECESSITIES
- A24—TOBACCO; CIGARS; CIGARETTES; SIMULATED SMOKING DEVICES; SMOKERS' REQUISITES
- A24B—MANUFACTURE OR PREPARATION OF TOBACCO FOR SMOKING OR CHEWING; TOBACCO; SNUFF
- A24B3/00—Preparing tobacco in the factory
- A24B3/14—Forming reconstituted tobacco products, e.g. wrapper materials, sheets, imitation leaves, rods, cakes; Forms of such products
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G15/00—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration
- B65G15/22—Conveyors having endless load-conveying surfaces, i.e. belts and like continuous members, to which tractive effort is transmitted by means other than endless driving elements of similar configuration comprising a series of co-operating units
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Tobacco Products (AREA)
Abstract
The invention discloses a forming and drying system for reconstituted tobacco by a thick pulp method special for heating non-combustible cigarettes, which comprises a raw material mixing unit (1), a forming unit (2), a stripping unit (3), a drying unit (4) and a winding unit (5); the raw material mixing unit (1) comprises a constant-temperature and constant-humidity storage tank (11), a first material premixing tank (12), a second material premixing tank (13), a first discharging pump (15) and a second discharging pump (16); the forming unit (2) comprises a forming steel belt (21), a heater (24), a feeding pump (22), a head box (23), a first dryer (25), a second dryer (26) and a third dryer (27) which are sequentially arranged. The system comprises a plurality of drying stages, so that the appearance color of the reconstituted tobacco can be ensured, the smoking quality of the reconstituted tobacco can be ensured, particularly, the great loss of aroma substances and smoke agents in the reconstituted tobacco can be avoided, and the preparation of the reconstituted tobacco for heating non-combustible cigarettes is met.
Description
Technical Field
The invention belongs to the technical field of reconstituted tobacco production and processing, and particularly relates to a forming and drying system for reconstituted tobacco by a thick pulp method special for cigarettes without burning and a method for reducing color difference of two sides of the reconstituted tobacco.
Background
With the acceleration of global tobacco control movement, the global tobacco industry enters a new period of seeking revolution and breakthrough, and further promotes and accelerates the research and development of novel tobacco products, such as heating non-combustion cigarettes, electronic cigarettes, buccal cigarettes and the like. The cigarette is an important component of the novel tobacco product.
Compared with the granular and traditional tobacco shreds as tobacco section materials, the reconstituted tobacco leaves have the characteristics of stronger plasticity, homogenization and higher adjustable level while keeping the active ingredients of the natural tobacco leaves, so the reconstituted tobacco leaves are one of the main tobacco section materials for heating non-combustible cigarettes at present.
When the tobacco sheet is formed by the thick pulp method, the tobacco raw material powder, the adhesive, the smoke agent and other materials are uniformly distributed on the surface layer and the inner layer of the tobacco sheet, so that the thickness and quantitative stability, the heat conduction uniformity and the smoke effect of the tobacco sheet are better, and the tobacco sheet is one of the main reasons for being a tobacco section material of a cigarette which is not combusted by heating. Such as: the iQOS cigarette developed by Felmo tobacco company adopts orderly arranged thick pulp method to reproduce tobacco leaves.
At present, the processing technology, the raw material formula and the like of the tobacco leaves reproduced by the thick paste method special for the cigarette without burning are researched more. CN106235376A discloses a 'reconstituted tobacco suitable for heating non-combustion type cigarettes'[66]The invention discloses each component of the reconstituted tobacco raw material, and the reconstituted tobacco is prepared by adopting a thick paste method production process, and the thick paste method developed by the invention patent does not use additional fibers. The Chinese patent application CN106714590A, CN107072285A and CN107072286A of Felmo tobacco corporation disclose the preparation method of pulp applied to the reconstituted tobacco by HNB cigarette thick pulp method, the composition and treatment of tobacco materialThe method and the requirement of coarse grinding, fine grinding and preparation method.
In summary, there are reports on a forming and drying device for preparing reconstituted tobacco by using a thick paste method, and the conventional reconstituted tobacco preparation equipment has the following two problems: 1. the forming and drying process of the reconstituted tobacco pulp is an important and key process section for forming and quality forming of the reconstituted tobacco by the thick pulp method. The traditional thick paste method reconstituted tobacco cannot realize partition, grading drying and regulation and control during forming and drying, only one drying area is arranged, and only one air inlet and one air outlet are arranged, so that the problem that the temperature and the moisture in a drying equipment cavity are uneven in distribution easily occurs, namely the temperature of hot air close to the air inlet is higher, the moisture in the hot air is low, and the temperature and the moisture far away from the air inlet are opposite. Therefore, the classification and the partition drying of the sizing agent and the uniform dehydration and drying of the sizing agent cannot be realized, the precise and flexible regulation and control of the dehydration and drying speed, the temperature and the quality of the reconstituted tobacco cannot be realized according to the quality requirement of the reconstituted tobacco, and even a large amount of volatilization of smoke generators and flavor substances of tobacco raw materials in the sizing agent can be caused; 2. due to different temperatures and different moisture contents of the two sides of the reconstituted tobacco in the drying process, the two sides of the reconstituted tobacco product have obvious color difference, and a system solution is not available.
Therefore, people hope to develop a forming and drying system of the thick paste method reconstituted tobacco special for heating the non-burning cigarettes, so as to realize accurate regulation and control of the temperature and the moisture of the paste and even the quality of the reconstituted tobacco, and develop thick paste method reconstituted tobacco suitable for the requirement of Chinese style heating non-burning cigarettes.
Disclosure of Invention
The invention develops a forming and drying system for thick paste method reconstituted tobacco special for heating non-burning cigarettes, which can systematically, cooperatively and flexibly control the temperature of hot air, the air intake and the air exhaust of the hot air in the system, further realize the accurate regulation and control of the temperature and the moisture of pulp and even the quality of the reconstituted tobacco, and develop thick paste method reconstituted tobacco suitable for the requirement of Chinese style heating non-burning cigarettes.
The invention provides a forming and drying system for reconstituted tobacco by a thick pulp method special for heating non-combustible cigarettes, which sequentially comprises a raw material mixing unit 1, a forming unit 2, a stripping unit 3, a drying unit 4 and a winding unit 5.
The raw material mixing unit 1 comprises a constant temperature and humidity storage tank 11, a first material premixing tank 12, a second material premixing tank 13, a water storage tank 14, a first discharging pump 15, a second discharging pump 16 and a water outlet pump 17;
the first material in the first material premixing tank 12 enters the constant temperature and humidity storage tank 11 through the first discharging pump 15; the second material in the second material premixing tank 13 enters the constant temperature and humidity storage tank 11 through the second discharging pump 16; the water in the water storage tank 14 enters the constant-temperature constant-humidity storage tank 11 through the water outlet pump 17;
the constant temperature and humidity storage tank 11 is internally provided with a stirring device 111, a density and temperature detector 112 and a heater 113.
The forming unit 2 comprises a forming steel belt 21, a heater 24, and a feed pump 22, a headbox 23, a first dryer 25, a second dryer 26, and a third dryer 27 arranged in sequence;
the headbox 23 is positioned above the forming steel belt 21, the headbox 23 comprising a stock outlet 231 and a stock scraper 232;
for the convenience of laboratory use, near infrared heating is adopted below the formed steel strip, that is, the heater 24 is an infrared heating plate and is positioned below the formed steel strip 21 for heating the formed steel strip 21; however, superheated steam may be used for heating as required, that is, the infrared heating plate located below the formed steel strip 21 is changed into a steam nozzle for heating the formed steel strip 21;
a first dryer 25, a second dryer 26 and a third dryer 27 are positioned above the forming steel belt 21, the first dryer 25 comprises a first moisture discharge opening 251, a first temperature and humidity detector 252 and a first hot air fan 253, the second dryer 26 comprises a second moisture discharge opening 261, a second temperature and humidity detector 262 and a second hot air fan 263, and the third dryer 27 comprises a third moisture discharge opening 271, a third temperature and humidity detector 272 and a third hot air fan 273;
the forming steel belt 21 carries reconstituted tobacco to move towards the stripping unit 3, and the directions of hot air blown out by the first hot air fan 253, the second hot air fan 263 and the third hot air fan 273 are opposite to the moving direction of the reconstituted tobacco.
Preferably, the peeling unit 3 includes a cleaning blade 35, and a moisture detector 31, a peeling blade 32, and a thickness adjusting roller 33 arranged in this order;
the thickness adjusting roller 33 includes an upper press roller 331 and a lower carrier roller 332.
Preferably, the drying unit 4 comprises a drying mesh belt 41, and an atomizing nozzle 42, a fourth dryer 43 and a fifth dryer 44 arranged in sequence;
the fourth dryer 43 comprises a fourth moisture discharge port 431, a fourth temperature and humidity detector 432 and a fourth hot air fan 433, and the fifth dryer 44 comprises a fifth moisture discharge port 441, a fifth temperature and humidity detector 442 and a fifth hot air fan 443;
the drying mesh belt 41 carries the reconstituted tobacco to run towards the rolling unit 5, and the hot air blown by the fourth hot air fan 433 and the fifth hot air fan 443 is blown towards the drying mesh belt 41 from the upper part and the lower part of the drying mesh belt 41 along the direction perpendicular to the drying mesh belt 41;
the atomizing spray pipe 42 is located below the drying mesh belt 41, the atomizing spray pipe 42 is close to one side of the drying mesh belt 41 and is provided with an air injection hole 421, and atomized water sprayed from the air injection hole 421 faces towards reconstituted tobacco along a direction perpendicular to the drying mesh belt 41. In addition, the atomizing nozzle 42 includes a heater and a temperature controller for atomizing water containing 1 to 5% of a fuming agent and 0.01 to 0.05% of diammonium hydrogen phosphate at 80 to 100 ℃ to obtain atomized water.
Preferably, the winding unit 5 comprises a winding table 51 and a winding shaft 52.
According to the method for reducing the color difference of two sides of the reconstituted tobacco, the reconstituted tobacco prepared by the forming and drying system is conveyed to the space between the drying mesh belts 41 and is moistened and ironed by atomized water sprayed out through the atomization spray pipe 42, and the smoke agent is supplemented.
In a preferred embodiment of the second aspect of the present invention, the atomized water is obtained by atomizing water containing 1% to 5% of a fuming agent selected from a conventional fuming agent for cigarette heating without burning such as glycerin or propylene glycol and 0.01% to 0.05% of diammonium hydrogen phosphate at 80 to 100 ℃, the diammonium hydrogen phosphate being food grade.
The system is particularly suitable for the production of reconstituted tobacco by heating non-burning cigarettes, and can also be prepared into laboratory equipment in a small scale for the preparation of reconstituted tobacco samples.
Compared with the prior art, the invention has the following beneficial effects:
1. the molding and drying system comprises a raw material mixing unit 1, a molding unit 2, a stripping unit 3, a drying unit 4 and a winding unit 5 in sequence. The system can be used for molding and drying the reconstituted tobacco for the heating non-combustion cigarette and preparing the sample, not only meets the processing and production requirements of the reconstituted tobacco for the heating non-combustion cigarette, but also can be prepared into a molding and drying system for a laboratory, and provides support for the research on the sample of the reconstituted tobacco for the heating non-combustion cigarette.
2. The forming unit 2 of the present invention comprises three drying stages, and the drying unit 4 comprises two drying stages, that is, the slurry flows out from the slurry outlet 231 of the head box 23 to form the reconstituted tobacco product and is divided into a plurality of drying stages for drying, the heating temperature of the heater 24, the hot air amount and the hot air temperature of the first hot air fan 253, the second hot air fan 263, the third hot air fan 273, the fourth hot air fan 433, the fifth hot air fan 443, the opening degree of the first moisture outlet 251, the second moisture outlet 261, the third moisture outlet 271, the fourth moisture outlet 431, or the fifth moisture outlet 441 can be set according to the characteristics of the slurry or the reconstituted tobacco of each stage, so as to ensure the appearance and the color of the reconstituted tobacco product, ensure a good suction feeling of the reconstituted tobacco product, and particularly avoid the loss of flavor substances in the reconstituted tobacco during the drying process, in the first drying stage, the surface temperature of the pulp membrane is 50-60 ℃, the temperature of the hot air is 80-100 ℃, and the pulp in the head box 23 just flows out from the pulp outlet 231 and is not basically formed on the forming steel belt 21, so that if the higher temperature is selected only for better drying effect, a large amount of smoke agents and flavor substances of tobacco raw materials in the pulp are volatilized, and the loss of the flavor substances is serious. Meanwhile, if the whole drying process is only one drying area, the hot air inlet and the air outlet of the whole drying process are unique, and the problem of uneven distribution of temperature and moisture in the cavity of the drying equipment is easy to occur, namely the temperature of the hot air close to the air inlet is high, the moisture in the hot air is low, and the temperature and the moisture far away from the air inlet are opposite. Therefore, classification and partition drying of the slurry cannot be realized, uniform dehydration and drying of the slurry cannot be realized, and accurate control of dehydration and drying process parameters and equipment parameters cannot be realized according to process requirements. Such as: the hot air quantity and temperature, the exhaust air quantity, the steel belt running speed and temperature cannot be systematically, cooperatively and flexibly controlled on the forming steel belt 21 according to the moisture of the slurry or the quality of the reconstituted tobacco, and the hot air quantity and temperature, the exhaust air quantity and the steel belt running speed cannot be systematically, cooperatively and flexibly controlled on the drying mesh belt 41; the classification and partition drying are based on the principle of low-temperature slow baking and flexible processing, and aiming at the technical requirements of each area on the slurry and the reconstituted tobacco dehydration in the reconstituted tobacco forming and drying procedure, the multi-section drying stage can be integrally, systematically and flexibly combined, so that systematic, synergetic and flexible control on the hot air quantity and temperature, the air exhaust quantity, the steel belt running speed and the temperature in the drying process is realized.
3. In a preferred embodiment of the present invention, after the reconstituted tobacco subjected to the stripping stage is conveyed to the drying mesh belt 41, atomized water sprayed through the atomizing nozzle 42 is used for moistening and replenishing the smoke agent, wherein the atomized water is obtained by atomizing water containing 1-5% of smoke agent and 0.01-0.05% of diammonium hydrogen phosphate at 80-100 ℃, the smoke agent is selected from common smoke agents for heating non-combustible cigarettes such as glycerin or propylene glycol, and the diammonium hydrogen phosphate is food grade. Atomizing spray tube 42 is located dry guipure 41 below, atomizing spray tube 42 is close to dry guipure 41 one side has fumarole 421, fumarole 421 spun atomized water is along the perpendicular to dry guipure 41's direction orientation reconstituted tobacco leaf, moist boiling hot reconstituted tobacco's aim at three points: firstly, as the reconstituted tobacco peeled from the forming steel belt 21 is relatively wrinkled and uneven in surface, atomized water sprayed out through the atomizing spray pipe 42 can moisten and scald the reconstituted tobacco to make the surface flat; secondly, because the color difference exists between the two surfaces of the reconstituted tobacco peeled from the forming steel belt 21, the color of one surface of the reconstituted tobacco against the forming steel belt 21 is lighter, the content of the smoke agent is lower than that of the surface, and the moisture of the reconstituted tobacco against the surface of the forming steel belt is adjusted to about 30 percent after the atomized water is supplemented; meanwhile, due to the addition of the diammonium hydrogen phosphate, the Maillard reaction of the reconstituted tobacco in the subsequent drying process after stripping is facilitated, so that the colors of two sides of the reconstituted tobacco are consistent, and the color difference of the two sides is reduced; thirdly, the difference of the content of the two-side smoke agents is reduced and the uniformity of the two-side smoke agents is improved by supplementing and adding the glycerol in the atomized water.
4. In the preferred embodiment of the present invention, the raw material mixing unit 1 of the present invention has a water storage tank 14, and the water storage tank 14 has the following two functions: firstly, during the stirring of the slurry in the constant temperature and humidity storage tank 11, the density and temperature detector 112 is used for detecting the density and temperature of the slurry in the constant temperature and humidity storage tank 11, and when the detected density is greater than the set density, the water outlet pump 17 is automatically started to add the production water from the water storage tank 14; secondly, after the preparation process of the reconstituted tobacco leaves is finished, the constant-temperature and constant-humidity storage tank 11 can be cleaned by water in the water storage tank 14.
5. In a preferred embodiment of the present invention, the present invention has a cleaning blade 34 that cleans the shaped steel band 21 after the reconstituted tobacco is peeled off from the shaped steel band 21.
6. According to the invention, the reconstituted tobacco is added with fibers (such as wood pulp fibers, hemp pulp, bamboo pulp and the like), so that the strength of the reconstituted tobacco can be improved, and the rolling unit 5 can be more favorable for rolling the reconstituted tobacco product.
Drawings
FIG. 1 is a schematic view of a forming and drying system for reconstituted tobacco by a thick pulp method special for cigarettes without burning by heating.
Wherein, the names of all the reference symbols in the description of the drawings are as follows: 1-raw material mixing unit, 2-forming unit, 3-stripping unit, 4-drying unit, 5-rolling unit, 11-constant temperature and humidity storage tank, 12-first material premixing tank, 13-second material premixing tank, 14-water storage tank, 15-first discharging pump, 16-second discharging pump, 17-water discharging pump, 21-forming steel belt, 22-feeding pump, 23-head box, 24-infrared heating plate, 25-first drier, 26-second drier, 27-third drier, 31-moisture detector, 32-stripping scraper, 33-thickness adjusting roller, 34-cleaning scraper, 41-drying mesh belt, 42-atomizing spray pipe, 43-fourth drier, 44-fifth drier, 51-winding table, 52-winding shaft, 111-stirring device, 112-density and temperature detector, 113-heater, 231-slurry outlet, 232-slurry scraper, 251-first moisture discharge port, 252-first temperature and humidity detector, 253-first hot air fan, 261-second moisture discharge port, 262-second temperature and humidity detector, 263-second hot air fan, 271-third moisture discharge port, 272-third temperature and humidity detector, 273-third hot air fan, 331-upper press roller, 332-lower press roller, 431-fourth moisture discharge port, 432-fourth temperature and humidity detector, 433-fourth hot air fan, 441-fifth moisture discharge port, 442-fifth temperature and humidity detector and 443-fifth hot air fan.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Referring to fig. 1, the embodiment provides a system for molding and drying reconstituted tobacco by a thick pulp method special for a heated non-burning cigarette, and the system sequentially comprises a raw material mixing unit 1, a molding unit 2, a stripping unit 3, a drying unit 4 and a winding unit 5.
The raw material mixing unit 1 comprises a constant temperature and humidity storage tank 11, a first material premixing tank 12, a second material premixing tank 13, a water storage tank 14, a first discharging pump 15, a second discharging pump 16 and a water outlet pump 17;
the first material in the first material premixing tank 12 enters the constant temperature and humidity storage tank 11 through the first discharging pump 15; the second material in the second material premixing tank 13 enters the constant temperature and humidity storage tank 11 through the second discharging pump 16; the water in the water storage tank 14 enters the constant-temperature constant-humidity storage tank 11 through the water outlet pump 17;
the constant temperature and humidity storage tank 11 is internally provided with a stirring device 111, a density and temperature detector 112 and a heater 113.
The forming unit 2 comprises a forming steel belt 21, a heater 24, and a feed pump 22, a headbox 23, a first dryer 25, a second dryer 26, and a third dryer 27 arranged in sequence;
the headbox 23 is positioned above the forming steel belt 21, the headbox 23 comprising a stock outlet 231 and a stock scraper 232;
the heater 24 is positioned below the formed steel strip 21 and used for heating the formed steel strip 21, and the heater 24 is an infrared heating plate;
a first dryer 25, a second dryer 26 and a third dryer 27 are positioned above the forming steel belt 21, the first dryer 25 comprises a first moisture discharge opening 251, a first temperature and humidity detector 252 and a first hot air fan 253, the second dryer 26 comprises a second moisture discharge opening 261, a second temperature and humidity detector 262 and a second hot air fan 263, and the third dryer 27 comprises a third moisture discharge opening 271, a third temperature and humidity detector 272 and a third hot air fan 273;
the forming steel belt 21 carries reconstituted tobacco to move towards the stripping unit 3, and the directions of hot air blown out by the first hot air fan 253, the second hot air fan 263 and the third hot air fan 273 are opposite to the moving direction of the reconstituted tobacco.
The peeling unit 3 includes a cleaning blade 35, and a moisture detector 31, a peeling blade 32, and a thickness adjusting roller 33 arranged in this order;
the thickness adjusting roller 33 includes an upper press roller 331 and a lower carrier roller 332.
The drying unit 4 comprises a drying mesh belt 41, and an atomizing nozzle 42, a fourth dryer 43 and a fifth dryer 44 which are arranged in sequence;
the fourth dryer 43 comprises a fourth moisture discharge port 431, a fourth temperature and humidity detector 432 and a fourth hot air fan 433, and the fifth dryer 44 comprises a fifth moisture discharge port 441, a fifth temperature and humidity detector 442 and a fifth hot air fan 443;
the drying mesh belt 41 carries the reconstituted tobacco to run towards the rolling unit 5, and the hot air blown by the fourth hot air fan 433 and the fifth hot air fan 443 is blown towards the drying mesh belt 41 from the upper part and the lower part of the drying mesh belt 41 along the direction perpendicular to the drying mesh belt 41;
the atomization spray pipe 42 is located below the drying mesh belt 41, one side, close to the drying mesh belt 41, of the atomization spray pipe 42 is provided with an air injection hole 421, atomized water sprayed by the air injection hole 421 faces the reconstituted tobacco along a direction perpendicular to the drying mesh belt 41, wherein the atomized water is obtained by atomizing water containing 3% of glycerin and 0.02% of diammonium hydrogen phosphate at 80-100 ℃, and the diammonium hydrogen phosphate is food grade.
The winding unit 5 includes a winding table 51 and a winding shaft 52.
The operation process of the forming and drying system for the thick pulp method reconstituted tobacco special for the heating non-combustible cigarette is as follows:
1. parameter setting
Before the device is started, according to the development target of the reconstituted tobacco by the thick pulp method special for heating the non-combustible cigarette, the thickness and the moisture of a sample are set.
2. Raw material mixing stage
Adding first materials such as smoke agent, adhesive, spice, water, etc. into a first material premixing tank 12, mixing, stirring at constant temperature for 10-20 min; adding the prepared second materials such as fiber (such as wood pulp fiber, hemp pulp, bamboo pulp, etc.) and water into a second material premixing tank 13, mixing, and stirring for 10-20 min; then, adding the first material mixed in the first material premixing tank 12 and the second material mixed in the second material premixing tank 13 into the constant-temperature and constant-humidity storage tank 11 through a first discharging pump 15 and a second discharging pump 16 respectively, and simultaneously adding the tobacco powder crushed in advance into the constant-temperature and constant-humidity storage tank 11; then starting the stirring device 111 to start stirring, wherein the stirring time is 30-60min, during the stirring period, the density and temperature detector 112 is used for detecting the density and temperature of the slurry in the constant-temperature and constant-humidity storage tank 11, when the detected density is greater than the set density, the water outlet pump 17 is automatically started to add the production water from the water storage tank 14, and the heating device 113 automatically heats or stops heating the slurry in the constant-temperature and constant-humidity storage tank 11 according to the set temperature; and stopping stirring after the slurry in the constant temperature and humidity storage tank 11 reaches the set temperature and density and the slurry is uniformly stirred.
3. Shaping phase
The forming stage is divided into a pulp flowing stage, a first drying stage, a second drying stage and a third drying stage, and during the drying process, pulp membranes gradually form reconstituted tobacco
(1) A pulp flow stage: starting a feed pump 22 to convey the uniformly stirred slurry in the constant-temperature and constant-humidity storage tank 11 to a head box 23, and automatically adding the slurry according to a set liquid level height; starting the formed steel belt 21 to horizontally rotate; according to the set temperature of the formed steel strip 21, starting a heater 24 and an infrared heating plate to heat the formed steel strip 21; according to the set temperature of hot air, a first hot air fan 253, a second hot air fan 263 and a third hot air fan 273 are started, the hot air inlet direction is opposite to the running direction of the formed steel strip 21, namely the air inlet mode is reverse air inlet; when the temperature of the formed steel belt 7 reaches the set temperature of 30-50 ℃, the slurry in the head box 23 is controlled to flow out from the slurry outlet 231 through the slurry scraper 232, and coating forming is started to form a slurry film;
(2) a first drying stage: in the first drying stage, the surface temperature of the pulp film is 50-60 ℃, the hot air temperature is 80-100 ℃, the surface temperature and the moisture of the pulp film are detected in real time through the heater 252 according to the set temperature and humidity parameters, and the heating power of the infrared heating plate of the heater 24, the hot air temperature and the hot air quantity of the first hot air fan 253 and the opening degree of the first moisture exhaust port 251 are automatically adjusted.
After the first drying stage, the moisture of the serosa is about 70 percent,
(3) a second drying stage: in the second drying stage, the temperature of the serous membrane is not higher than 70 ℃, and the temperature of hot air is 100 ℃ and 110 ℃; in the second drying stage, according to the set temperature and humidity parameters, the surface temperature and moisture of the serosa are detected in real time by the first temperature and humidity detector 262, and the heating power of the infrared heating plate of the heater 24, the hot air temperature and the hot air quantity of the second hot air fan 263 and the opening degree of the second moisture outlet 261 are automatically adjusted;
after the second drying stage, the moisture content of the serosa is about 50%.
(4) A third drying stage: in the third drying stage, the surface temperature of the reconstituted tobacco is not higher than 80 ℃, and the hot air temperature is 110-120 ℃; in the third drying stage, according to the set temperature and humidity parameters, the surface temperature and moisture of the reconstituted tobacco are detected in real time by the second temperature and humidity detector 272, and the heating power of the infrared heating plate of the heater 24, the hot air temperature and the hot air quantity of the third hot air fan 273 and the opening degree of the third moisture exhaust port 271 are automatically adjusted.
After the third drying stage, the moisture of the reconstituted tobacco is about 25-28%.
4. Stripping stage
Detecting the moisture of the reconstituted tobacco on the forming steel belt 21 through a moisture detector 31, when the moisture is 25% -28%, conveying the reconstituted tobacco to a stripping stage, stripping the reconstituted tobacco from the forming steel belt 21 through a stripping scraper 32, adjusting the thickness of the stripped reconstituted tobacco through a thickness adjusting roller 33, and if the thickness of the reconstituted tobacco is larger than the set thickness, matching an upper press roller 331 and a lower carrier roller 332 of the thickness adjusting roller 33 with each other to roll the reconstituted tobacco; after the reconstituted tobacco leaves are peeled off from the forming steel belt 21, the forming steel belt 21 can be cleaned by a cleaning scraper 34.
5. Drying stage
The drying stage includes a fourth drying stage and a fifth drying stage.
Starting the drying mesh belt 41 to horizontally run; according to the set temperature of the hot air, the fourth hot air blower 433 and the fifth hot air blower 443 are turned on, the hot air inlet direction is perpendicular to the drying mesh belt 41, and air is respectively supplied to the drying mesh belt 41 from above and below the drying mesh belt 41, that is, the air supply mode is up and down air supply.
(1) A fourth drying stage: because the peeled reconstituted tobacco is relatively wrinkled, atomized water sprayed out through an atomizing nozzle 42 is used for moistening and scalding, wherein the atomized water is obtained by atomizing water containing 3% of glycerin and 0.02% of diammonium hydrogen phosphate at 80-100 ℃, and meanwhile, the moisture of the reconstituted tobacco is adjusted to be about 30%; then the mixture is conveyed to a fourth drying stage by a drying mesh belt 41 for drying, and the temperature of hot air is 100-120 ℃; and the temperature and the moisture of the reconstituted tobacco are monitored in real time by the third temperature and humidity detector 432, and the hot air quantity and the hot air temperature of the fourth air heater 433 and the opening degree of the fourth moisture discharge opening 431 are automatically adjusted.
After the fourth drying stage, the moisture of the reconstituted tobacco is 16% -18%.
(2) A fifth drying stage, conveying the reconstituted tobacco with the water content of 16-18% to the fifth drying stage for drying, wherein the temperature of hot air is 80-100 ℃; the temperature and moisture of the reconstituted tobacco are monitored by the fourth temperature and humidity detector 442 in real time, and the hot air quantity and the hot air temperature of the fifth hot air blower 443 and the opening degree of the fifth moisture discharge port 441 are automatically adjusted.
After the fifth drying stage, the moisture of the reconstituted tobacco is 12% -14%.
6. Winding section
The reconstituted tobacco with the water content of 12% -14% is conveyed to a winding table 51 through a drying mesh belt 41 and wound on a winding shaft 52 for winding.
And after the rolling is finished, repeating the processes to prepare the reconstituted tobacco for the next time.
Claims (6)
1. A shaping and drying system for reconstituted tobacco by a thick pulp method special for heating non-combustible cigarettes is characterized by sequentially comprising a raw material mixing unit (1), a shaping unit (2), a stripping unit (3), a drying unit (4) and a winding unit (5);
the raw material mixing unit (1) comprises a constant-temperature and constant-humidity storage tank (11), a first material premixing tank (12), a second material premixing tank (13), a water storage tank (14), a first discharging pump (15), a second discharging pump (16) and a water outlet pump (17);
the first material in the first material premixing tank (12) enters the constant-temperature constant-humidity storage tank (11) through the first discharging pump (15); the second material in the second material premixing tank (13) enters the constant-temperature constant-humidity storage tank (11) through the second discharging pump (16); the water in the water storage tank (14) enters the constant-temperature constant-humidity storage tank (11) through the water outlet pump (17);
the constant-temperature and constant-humidity storage tank (11) is internally provided with a stirring device (111), a density and temperature detector (112) and a heater (113);
the forming unit (2) comprises a forming steel belt (21), a heater (24), a feeding pump (22), a head box (23), a first dryer (25), a second dryer (26) and a third dryer (27) which are arranged in sequence;
the headbox (23) is located above the forming steel belt (21), the headbox (23) comprising a stock outlet (231) and a stock scraper (232);
the heater (24) is positioned below the formed steel strip (21) and used for heating the formed steel strip (21); the heater (24) is an infrared heating plate or a steam spray pipe;
a first dryer (25), a second dryer (26) and a third dryer (27) are positioned above the forming steel belt (21), the first dryer (25) comprises a first moisture discharge port (251), a first temperature and humidity detector (252) and a first hot air fan (253), the second dryer (26) comprises a second moisture discharge port (261), a second temperature and humidity detector (262) and a second hot air fan (263), and the third dryer (27) comprises a third moisture discharge port (271), a third temperature and humidity detector (272) and a third hot air fan (273);
the forming steel belt (21) carries reconstituted tobacco to move towards the stripping unit (3), and the hot air direction blown out by the first hot air fan (253), the second hot air fan (263) and the third hot air fan (273) is opposite to the moving direction of the reconstituted tobacco.
2. The form drying system according to claim 1, wherein the peeling unit (3) comprises a cleaning blade (34), and a moisture detector (31), a peeling blade (32), and a thickness adjusting roller (33) arranged in this order;
the thickness adjusting roller (33) includes an upper press roller (331) and a lower support roller (332).
3. The forming and drying system according to claim 1, characterized in that the drying unit (4) comprises a drying wire belt (41), and an atomizing nozzle (42), a fourth dryer (43) and a fifth dryer (44) arranged in sequence;
the fourth dryer (43) comprises a fourth moisture discharge port (431), a fourth temperature and humidity detector (432) and a fourth hot air fan (433), and the fifth dryer (44) comprises a fifth moisture discharge port (441), a fifth temperature and humidity detector (442) and a fifth hot air fan (443);
the drying mesh belt (41) carries reconstituted tobacco to run towards the rolling unit (5), and hot air blown by the fourth hot air fan (433) and the fifth hot air fan (443) is blown towards the drying mesh belt (41) from the upper part and the lower part of the drying mesh belt (41) along the direction perpendicular to the drying mesh belt (41);
atomizing spray tube (42) are located dry guipure (41) below, atomizing spray tube (42) are close to dry guipure (41) one side has fumarole (421), fumarole (421) spun atomized water is along the perpendicular to the direction orientation reconstituted tobacco of dry guipure (41).
4. The mold drying system according to claim 1, characterized in that the take-up unit (5) comprises a take-up table (51) and a take-up reel (52).
5. A method for reducing the two-side color difference of reconstituted tobacco, characterized in that the reconstituted tobacco is prepared by using the forming and drying system of claim 3, and is conveyed to the space between the drying mesh belts (41) and is moistened and supplemented with smoke agent by atomized water sprayed out through the atomized spray pipes (42).
6. The method according to claim 5, wherein the atomized water is obtained by atomizing water containing 1% to 5% of a fuming agent selected from glycerin or propylene glycol, 0.01% to 0.05% of diammonium hydrogen phosphate at 80-100 ℃.
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