CN101926500A - Section drying cut tobacco equipment and method - Google Patents
Section drying cut tobacco equipment and method Download PDFInfo
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- CN101926500A CN101926500A CN 201010268060 CN201010268060A CN101926500A CN 101926500 A CN101926500 A CN 101926500A CN 201010268060 CN201010268060 CN 201010268060 CN 201010268060 A CN201010268060 A CN 201010268060A CN 101926500 A CN101926500 A CN 101926500A
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Abstract
The invention provides section drying cut tobacco equipment and a section drying cut tobacco method, which can keep enough hot air drying efficiency. The equipment main body is a two-section cylinder dryer; materials are fed through a feed port of the cylinder dryer by a vibrational fluidized bed; the front bed body of the vibrational fluidized bed extends into a feed cover of the drying cylinder; a bed surface bottom plate of the vibrational fluidized bed body which extends into the drying cylinder has a net plate structure; a hot air port is formed on the lower part of the net plate; and the hot air is blown from the lower part of the net plate into the drying cylinder. The section drying cut tobacco method comprises the step of drying through hot airflow in the feeding process before high and low temperature section drying of the drying cylinder. Due to the adoption of a multi-stage section drying mode, the section drying cut tobacco equipment and the section drying cut tobacco method are favorable for uniformly drying the cut tobacco, make the whole airflow drying process strengthened, and also make low-temperature drying of cut tobacco possible.
Description
Technical field:
The present invention relates in a kind of tobacco cutting production technology the leaf silk be carried out the equipment of stage drying, also relate to a kind of method of section drying cut tobacco simultaneously.
Background technology:
Leaf silk drying is the important procedure in the tobacco cutting production process.The operation target of leaf silk drying is that the part moisture content of removing in the leaf silk requires and precision with the moisture content that reaches regulation, improves the filling value of leaf silk simultaneously, reduces the excitant and the assorted gas of leaf silk, improves the suction flavor of leaf silk.
The principal mode of present cut tobacco drying equipment has two kinds, tower tubular type pneumatic drying of cut tobacco and single hop cartridge type baking silk.Tower tubular type pneumatic drying of cut tobacco is that the leaf silk is added in the drying tube continuously, in the process that the high-speed and high-temperature air-flow is carried, makes the moisture of leaf silk obtain evaporation, finally obtains the process of dried material.The dry tenacity of tower tubular type pneumatic drying of cut tobacco is big, and drying time is short, and treating capacity is big, thermal efficiency height, and the leaf silk finished product that obtains has bigger filling value.But the moisture content of tower tubular type pneumatic drying of cut tobacco finished product and the fluctuation of temperature are bigger, and be harmonious relatively poor, temperature is higher in the whole process of producing high-grade leaf silk, the temperature of general air-flow is that the temperature rise of silk of process middle period is higher between 160 ℃-260 ℃, is difficult to keep this perfume (or spice) of leaf silk.Single hop cartridge type baking silk is to realize leaf silk drying by heat exchange pattern, realize the drying of leaf silk by the conduction of heat at a slow speed of cylinder barrel and leaf silk, its PROCESS FOR TREATMENT temperature must be greater than 130 ℃, and the moisture content that just can make the leaf silk is reduced to about 12% about by 20%-28%.The moisture content of cartridge type baking silk finished product and the harmony of temperature are better, but the filling capacity of leaf silk is lower.A large amount of studies show that: for medium-to-high grade leaf silk, when the temperature of the leaf silk of leaf silk in process itself is higher than 100 ℃, dried leaf silk fragrance matter can obvious variation, and perfume quantity is reduction significantly.Existing drying means is difficult to solve the dehydrating amount of leaf silk and the contradiction that Ye Si fragrance retains.
For solving above technical problem, guarantee the dry mass of leaf silk, keep the fragrance of drying leaf-silk, improve the filling value of leaf silk, adopting stage drying at the constant rate drying period of leaf silk and falling rate drying period is the development trend of present leaf silk drying.
The processing method of the drying leaf-silk stage by stage of patent 200910031986.8 comprises two operation stages, and wherein, the phase I is to carry out constant rate of drying by fluidized drying, and the dry-heat air temperature is controlled between 110-160 ℃, makes leaf silk fast dewatering to 15%; Second stage is to carry out falling-rate periods of drying by cylinder baking silk, and the barrel temperature is controlled between 80-100 ℃, is that about 15% leaf silk is dried the moisture about 12% with moisture.This method can effectively utilize the different drying property of leaf silk of two drying stages of constant rate drying period and falling rate drying period, can be at the relative high temperature gas flow drying leaf-silk of constant rate drying period utilization, make full use of the cooling effect of high wet leaves silk moisture vaporization, under the prerequisite that does not improve leaf silk processing temperature, improve the filling value of leaf silk; When the leaf silk enters falling rate drying period, in time reduce the temperature of dry gas stream simultaneously, reduce leaf silk processing temperature, reduce the fragrance loss of leaf silk in dry run.But this equipment is the combination of pneumatic conveying dryer and drum drying equipment, some shortcoming of the globality of equipment, and the processing and manufacturing difficulty of equipment is big.
Chinese patent application 200910074997.4 has been announced a kind of sectional type low temperature roller cut tobacco drying equipment.This equipment is divided into two sections of high-temperature region and low-temperature spaces with cylindrical shell the leaf silk is carried out drying, and hot blast is sent into cylindrical shell by the low warm-air pipe road and the high hot air duct segmentation of containing on this low warm-air pipe road, and hot air duct and cylindrical shell rotate synchronously.Its leading portion is auxilliary based on conductive drying, convective drying; Back segment is based on convective drying, and hot conductive drying is auxilliary.The described hot blast of this scheme enters cylindrical shell from the interlude of cylindrical shell, move to the cylindrical shell two ends, in the process that moves, the temperature of hot blast is in continuous reduction, and material has only partial material to contact with hot blast and absorbs heat energy from the process that the high point of cylindrical shell is shed downwards, hot blast subsequently can be sought the less no material district of resistance and converge to the humidity discharging mouth, the effect of heated-air drying is relatively poor, and especially its back segment is difficult to obtain the uniform product of moisture content based on the heated-air drying drying.Secondly, warm-air pipe is in cylinder inside, and material enters warm-air pipe in the process of shedding just is difficult to effectively be cleared up, and finally can cause warm-air pipe to stop up.Its material is shed on the intermediate heat airduct by cylinder and is shed once more, and it is broken also can to cause the secondary pipe tobacco to make.
Summary of the invention
Technical problem to be solved by this invention provide a kind of device structure simplify, easy to maintenance, can keep the section drying cut tobacco equipment of enough heated-air drying efficient simultaneously.
Section drying cut tobacco equipment of the present invention, its main body are the cylinder cut tobacco dryer of two-part, and its drying cylinder is a whole cylinder, along pipe tobacco input and output material direction, be divided into high temperature section and low-temperature zone according to the temperature difference,, adopt the vibrated fluidized bed charging at the charging aperture of cylinder cut tobacco dryer; Vibrated fluidized bed leading portion bed body stretches in the charging cover of drying cylinder, and deeply the bed surface base plate of the vibrated fluidized bed bed body of part is the web plate structure, and the web plate bottom is provided with hot-air mouth, and hot blast upwards is blown in the drying cylinder from the web plate bottom.
The present invention is at the charging aperture of cylinder baking silk, adopt the vibrated fluidized bed charging, simultaneously, hot blast upwards is blown into from vibrated fluidized bed web plate bottom, makes pipe tobacco be fluidized state and enters drying cylinder, pipe tobacco obtain preliminary drying, the dehydrating amount of this process is about about 4%, and simultaneously, pipe tobacco has carried out sufficient heat exchange with hot blast under fluidized state, temperature is kept and is improved, and helps subsequent drying.
Secondly, above the drying cylinder afterbody, wind-collecting cover is set.Hot blast is collected the back by wind-collecting cover and is discharged by blower fan, can keep the less humidity of drying cylinder inside, helps the water evaporates of pipe tobacco.
Described wind-collecting cover can be connected with circulating fan by airduct; The discharge pipe of circulating fan is communicated with hot-air mouth.So be provided with, the hot blast that can collect by wind-collecting cover behind discharge section moisture, by circulating fan suction heating after hot-air mouth imports vibrated fluidized bed once more, with the minimizing energy resource consumption.
The high temperature section of drying cylinder and low-temperature zone can provide thermal source by steam and hot water respectively.The adjustable range of high temperature section temperature is between 120-180 ℃, and the adjustable range of low-temperature zone temperature is between 80-100 ℃.
Another technical problem that the present invention will solve provides a kind of section drying cut tobacco method of utilizing the said equipment to realize.Specifically comprise: moisture content be the pipe tobacco of 20-23% from the vibrated fluidized bed process, through the heated-air drying that upwards blows out from the vibrated fluidized bed bottom surface, pipe tobacco moisture content is reduced to 16-19%; After pipe tobacco entered the drying cylinder high temperature section with hot blast, under the dry acting in conjunction of the thermal convection current of the hot conductive drying of drying cylinder wallboard and flight and hot blast, the pipe tobacco fast dewatering was to 15-16%; Through the dried pipe tobacco of high temperature section drying cylinder, order enters the low-temperature zone drying, pipe tobacco under the thermal convection current acting in conjunction of the hot blast of the heat conduction of low-temperature zone drying cylinder wallboard and flight and relative low temperature, the drying and the balance of realization moisture content.Final pipe tobacco moisture content is about 12%, and temperature is about 70 ℃.
As preferred version, the hot blast wind speed that is blown into from the vibrated fluidized bed bottom surface is the 1-3 meter per second, and hot blast temperature is 120-160 ℃, makes pipe tobacco be fluidized state and enters drying cylinder, with abundant assurance heated-air drying efficient.
In addition, the drying cylinder high temperature section provides thermal source by steam, and temperature regulating range is between 120-180 ℃; The drying cylinder low-temperature zone provides thermal source by hot water, and temperature regulating range is between 80-100 ℃.
Enforcement of the present invention can obtain following remarkable technique effect:
1, three-stage drying mode provided by the present invention can realize the flexible dry drying process of " hot and humid, low temperature and low humidity " subregion control.Adopt multistage stage drying pattern according to the different drying and dehydrating characteristics in two stages of constant rate drying period and falling rate drying period of pipe tobacco and the character of Ye Si, the even drying that helps the leaf silk, and whole pneumatic conveying drying process is strengthened, also make the low temperature drying of leaf silk become possibility.By improving the quick dewatering drying efficient of pipe tobacco, increase the filling capacity of pipe tobacco, utilize the characteristics of pipe tobacco material and the characteristics of drying and dehydrating simultaneously, by reducing the pipe tobacco temperature in the whole dry run, keep the content of the oxious component such as tar, smoking nicotine of the intrinsic fragrance of pipe tobacco and style and features and reduction cigarette to help keeping the intrinsic fragrance and the qualitative characteristics of leaf silk.
2, the present invention as the apparatus for feeding as cut-tobacco drier, and replenishes vibrated fluidized bed with the function of cut-tobacco drier mutually, has realized the organic unity with cut-tobacco drier equipment.The vibratory liquefaction dry feed, can realize leaf silk fluidized drying in short distance, pipe tobacco constantly overturns in drying, pipe tobacco is more even at the time ratio that dry section stops, the uniformity of leaf silk drying is improved, realize the non-binding evaporation of water of pipe tobacco fast, help realizing obtaining higher compactedness in the tobacco shreds drying process, effectively reduce the fragrance loss in the leaf silk dry run simultaneously.
Description of drawings
Fig. 1 is that equipment of the present invention is formed front view;
Fig. 2 is the left view of equipment of the present invention.
The specific embodiment
As shown in Figure 1, equipment of the present invention is made up of two equipment that connect each other, and involving vibrations fluid bed 01 is used for charging and the preliminarily dried and the cylinder cut tobacco dryer 02 of pipe tobacco.
As shown in Figures 1 and 2, the drying cylinder of described cylinder cut tobacco dryer 02 is along pipe tobacco input and output material direction, be divided into high temperature section 22 and low-temperature zone 23 according to the temperature difference, high temperature section 22 and low-temperature zone 23 length are impartial substantially, high temperature section 22 provides thermal source by steam, low-temperature zone 23 provides thermal source by hot water, and described heating steam and hot water are imported respectively in the drying cylinder wallboard 28 of the high temperature drying section 22 of drying cylinder 02 and low-temperature zone 23 by swivel joint 25, and wallboard 28 and flight 27 are heated.
As shown in Figure 1, at the charging aperture of cylinder cut tobacco dryer 02, adopt vibrated fluidized bed 01 charging; The leading portion bed body of vibrated fluidized bed 01 stretches in the charging cover 21 of cylinder cut tobacco dryer about about 1 meter, and deeply the bed surface base plate 13 of the vibrated fluidized bed bed body of part is the web plate structure, and the web plate bottom is provided with hot-air mouth 12, and hot blast upwards is blown in the drying cylinder from web plate 13 bottoms.Drying cylinder discharge end top is provided with wind-collecting cover 24, and is connected with circulating fan 26 by airduct, and the discharge pipe of circulating fan 26 is communicated with hot-air mouth 12.
The dry processing procedure of the preferred leaf silk of the present invention specifically may further comprise the steps:
1, with the leaf silk water balance after the chopping to about the 20%-24%, pass through flow controlling unit, the leaf silk sent into be vibrated fluidized bed 01, the vibrated fluidized bed rear portion is stretched in the charging cover 21 of cut-tobacco drier 02 about about 1 meter, pipe tobacco is realized preliminary drying in this 1 meter distance, dewater about about 4%, this moment, the temperature of pipe tobacco was about 70 ℃, hot blast is sent into vibrated fluidized bed 01 by circulating fan 26 by hot-air mouth 12, bed surface web plate 13 by bed surface 11 bottoms blows afloat pipe tobacco, realize fluidized drying, the wire side wind speed is the 1-3 meter per second, and hot blast temperature is 120-160 ℃;
2, the pipe tobacco of preliminarily dried enters the high temperature drying section 22 of drying cylinder 02, under the dry acting in conjunction of the thermal convection current of the hot conductive drying of drying cylinder wallboard 28 and flight 27 and hot blast, the pipe tobacco fast dewatering is to 15-16%, dried pipe tobacco through high temperature section 22 drying cylinders, order enters low-temperature zone 23 dryings, the hot blast of this moment is through the heat exchange of leading portion, temperature further is reduced to below 100 ℃, pipe tobacco is under the thermal convection current acting in conjunction of the hot blast of conduction of the heat of low-temperature zone drying cylinder wallboard 28 and flight 27 and relative low temperature, realize the drying and the balance of moisture content, final pipe tobacco moisture content is about 12%, and temperature is about 70 ℃.Pipe tobacco is discharged into outside the drying cylinder by discharging opening.
3, the hot blast that enters drying cylinder from vibrated fluidized bed veil plate 13 flows before the direction that pipe tobacco advances, at the wind-collecting cover 24 of the discharge end of cut-tobacco drier installing, hot blast is collected behind the discharge section moisture of back by importing vibrated fluidized bed once more after the circulating fan 26 suction heating.
Claims (7)
1. section drying cut tobacco equipment, its main body is the cylinder cut tobacco dryer of two-part, its drying cylinder is a whole cylinder, along pipe tobacco input and output material direction, be divided into high temperature section and low-temperature zone according to the temperature difference, it is characterized in that:, adopt the vibrated fluidized bed charging at the charging aperture of cylinder cut tobacco dryer; Vibrated fluidized bed leading portion bed body stretches in the charging cover of drying cylinder, and deeply the bed surface base plate of the vibrated fluidized bed bed body of part is the web plate structure, and the web plate bottom is provided with hot-air mouth, and hot blast upwards is blown in the drying cylinder from the web plate bottom.
2. section drying cut tobacco equipment according to claim 1 is characterized in that: drying cylinder afterbody top is provided with wind-collecting cover.
3. section drying cut tobacco equipment according to claim 2 is characterized in that: described wind-collecting cover is connected with circulating fan by airduct; The discharge pipe of circulating fan is communicated with hot-air mouth.
4. section drying cut tobacco equipment according to claim 1 is characterized in that: the high temperature section of drying cylinder and low-temperature zone provide thermal source by steam and hot water respectively.
5. section drying cut tobacco method of using the described equipment of claim 1 may further comprise the steps: moisture content be the pipe tobacco of 20-23% from the vibrated fluidized bed process, through the heated-air drying that upwards blows out from the vibrated fluidized bed bottom surface, pipe tobacco moisture content is reduced to 16-19%; After pipe tobacco entered the drying cylinder high temperature section with hot blast, under the dry acting in conjunction of the thermal convection current of the hot conductive drying of drying cylinder wallboard and flight and hot blast, the pipe tobacco fast dewatering was to 15-16%; Through the dried pipe tobacco of high temperature section drying cylinder, order enters the low-temperature zone drying, pipe tobacco under the thermal convection current acting in conjunction of the hot blast of the heat conduction of low-temperature zone drying cylinder wallboard and flight and relative low temperature, the drying and the balance of realization moisture content.
6. section drying cut tobacco method according to claim 5 is characterized in that: the hot blast wind speed that is blown into from the vibrated fluidized bed bottom surface is the 1-3 meter per second, and hot blast temperature is 120-160 ℃, makes pipe tobacco be fluidized state and enters drying cylinder.
7. section drying cut tobacco method according to claim 5 is characterized in that: the drying cylinder high temperature section provides thermal source by steam, and temperature regulating range is between 120-180 ℃; The drying cylinder low-temperature zone provides thermal source by hot water, and temperature regulating range is between 80-100 ℃.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010268060 CN101926500A (en) | 2010-08-31 | 2010-08-31 | Section drying cut tobacco equipment and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010268060 CN101926500A (en) | 2010-08-31 | 2010-08-31 | Section drying cut tobacco equipment and method |
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| CN101926500A true CN101926500A (en) | 2010-12-29 |
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| CN 201010268060 Pending CN101926500A (en) | 2010-08-31 | 2010-08-31 | Section drying cut tobacco equipment and method |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102217779A (en) * | 2011-06-19 | 2011-10-19 | 红云红河烟草(集团)有限责任公司 | Method for improving cigarette quality in drum cut tobacco drying treatment stage |
| CN102423109A (en) * | 2011-10-19 | 2012-04-25 | 江苏智思机械集团有限公司 | Tobacco material redrying equipment and method |
| CN104886748A (en) * | 2015-04-30 | 2015-09-09 | 广东中烟工业有限责任公司 | Two-segment cylinder cut-tobacco drier with independent temperature control function |
| CN106490668A (en) * | 2016-12-14 | 2017-03-15 | 湖北中烟工业有限责任公司 | A kind of two benches cigarette leaves and tobacco drying unit and baking silk technique |
| CN116764255A (en) * | 2023-08-24 | 2023-09-19 | 山东和天下新材料有限公司 | Uniformity drying equipment is used in PVC foaming modifier production |
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| CN2548095Y (en) * | 2002-02-27 | 2003-04-30 | 歙县农业机械化管理局 | Hot-air drying unit |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102217779A (en) * | 2011-06-19 | 2011-10-19 | 红云红河烟草(集团)有限责任公司 | Method for improving cigarette quality in drum cut tobacco drying treatment stage |
| CN102423109A (en) * | 2011-10-19 | 2012-04-25 | 江苏智思机械集团有限公司 | Tobacco material redrying equipment and method |
| CN104886748A (en) * | 2015-04-30 | 2015-09-09 | 广东中烟工业有限责任公司 | Two-segment cylinder cut-tobacco drier with independent temperature control function |
| CN106490668A (en) * | 2016-12-14 | 2017-03-15 | 湖北中烟工业有限责任公司 | A kind of two benches cigarette leaves and tobacco drying unit and baking silk technique |
| CN106490668B (en) * | 2016-12-14 | 2018-07-10 | 湖北中烟工业有限责任公司 | A kind of two benches cigarette leaves and tobacco drying unit and baking silk technique |
| CN116764255A (en) * | 2023-08-24 | 2023-09-19 | 山东和天下新材料有限公司 | Uniformity drying equipment is used in PVC foaming modifier production |
| CN116764255B (en) * | 2023-08-24 | 2023-10-27 | 山东和天下新材料有限公司 | Uniformity drying equipment is used in PVC foaming modifier production |
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Application publication date: 20101229 |