WO2005000043A1 - Procede et equipement pour la dilatation du tabac hache - Google Patents

Procede et equipement pour la dilatation du tabac hache Download PDF

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Publication number
WO2005000043A1
WO2005000043A1 PCT/CN2003/000512 CN0300512W WO2005000043A1 WO 2005000043 A1 WO2005000043 A1 WO 2005000043A1 CN 0300512 W CN0300512 W CN 0300512W WO 2005000043 A1 WO2005000043 A1 WO 2005000043A1
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WO
WIPO (PCT)
Prior art keywords
expansion
tobacco
temperature
conveying
airflow
Prior art date
Application number
PCT/CN2003/000512
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English (en)
Chinese (zh)
Inventor
Jiareng Huang
Original Assignee
Jiareng Huang
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Jiareng Huang filed Critical Jiareng Huang
Priority to PCT/CN2003/000512 priority Critical patent/WO2005000043A1/fr
Publication of WO2005000043A1 publication Critical patent/WO2005000043A1/fr

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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
    • A24B3/18—Other treatment of leaves, e.g. puffing, crimpling, cleaning
    • A24B3/182—Puffing

Definitions

  • the invention relates to a method for expanding shredded tobacco and equipment using the method. Background technique
  • the shredded tobacco After being impregnated with an expansion medium (such as carbon dioxide), the shredded tobacco is sent to a high-temperature (320 ° C ⁇ 380 ° C) airflow conveyance pipeline system with superheated steam as the main gas phase for expansion treatment.
  • an expansion medium such as carbon dioxide
  • the shredded tobacco After expanding the shredded tobacco, its expansion rate can reach 100%, which can greatly reduce the consumption of tobacco in a single box of tobacco; the improved burning performance of the shredded tobacco reduces the tar content in the smoke and reduces harmful substances. Therefore, the process and equipment of expanded tobacco shreds have been widely used in various countries around the world.
  • the typical DIET (dry ice expanded shredded tobacco) process and equipment is that after the tobacco is impregnated with carbon dioxide, it is sent to a high-temperature airflow conveying expansion system for processing through a loosen, vibrating silo, and quantitative feeding.
  • the carbon dioxide and moisture in the tobacco are quickly gasified. And get swell.
  • the moisture content of cut tobacco is 2% ⁇ 3%.
  • the patent of the United States Reynolds Tobacco Company proposes to use a circular arc (C-shaped) pipe with a large curvature radius as the transport expansion pipe, and the rectangular cross-section width to thickness ratio (W / D) of the rectangle is 5 ⁇ 2, And the pipeline has a gradual The thickness is gradually reduced after being enlarged to reduce the fragmentation during the expansion process of the shredded tobacco.
  • this equipment will also reduce the dry basis moisture content of the shredded tobacco to less than 3%, which will cause more volatile substances in the shredded tobacco to affect the quality of the shredded tobacco.
  • CN1061328A is to set a number of nozzles at specific positions on the tobacco conveying expansion pipe, and inject steam or water mist into the high-temperature airflow through the nozzle to control the temperature of the airflow in the conveying expansion pipe (from the initial temperature 320 ° C gradually decreases to 155 ° C along the pipeline), so that the heat received by the tobacco in the expansion pipeline is reduced.
  • This method can reduce the loss of flavor substances in the shredded tobacco, and it will not cause a scorched smell in the smoke.
  • the amount of steam or water mist injected into each nozzle is not easy to control. If the water atomization is not good, the expansion effect will be affected.
  • the cut tobacco temperature is the boiling temperature of water (100 ° C) under the operating pressure, which will not cause a large amount of loss of flavor substances in the cut tobacco.
  • the moisture content of the dried tobacco was reduced to 2% ⁇ 3%, the temperature of the tobacco was close to the temperature of the dry air stream.
  • the higher the temperature of the dry air stream the more aroma substances are lost in the shredded tobacco, and it is inevitable that the burnt smell in the smoke, and the shredded tobacco is also easily broken. Therefore, in order to prevent the excessively high temperature of the shredded tobacco during the expansion process, it is necessary to control the temperature of the dry air stream when the moisture content of the shredded tobacco dry basis falls below 8% to 9%.
  • the purpose of the present invention is to provide a method and a device for expanding tobacco shreds, which have a high expansion rate of tobacco shreds, but have a low crushing rate, will not greatly reduce the amount of scent substances in the tobacco shreds, and will not have a scorched smell in the smoke.
  • the purpose of the present invention is achieved by the following technical scheme:
  • the expanded tobacco shred method provided by the present invention is that after the tobacco is impregnated with an expansion medium (such as carbon dioxide), the flow is uniformly fed into a dry medium with superheated steam as an initial temperature of 320 ° ( : ⁇ 380 ° C is used to expand and dry in the expansion pipeline system of air flow conveying.
  • the ratio of the volume of superheated steam to the volume of dry air in the drying medium is generally set to 8: 2 ⁇ 9: 1.
  • Increase the material-gas ratio of the expansion pipeline system. The ratio of the quality of the shredded tobacco to the mass of the conveying expansion air stream), so that the material-gas ratio is increased from less than 0.17 to 0.2 to 0.35.
  • the moisture content of the dry basis of the tobacco in the conveying expansion pipe has been reduced to a specific position of 15% to 16.5% ,
  • the circulating airflow with a lower moisture content to a fixed temperature is fed into the conveying expansive airflow, so that the temperature of the conveying expansive airflow is reduced to 160 ° C at the discharge point, and the lowest is 140 ° C.
  • the temperature of the shredded tobacco is excessively increased, and the moisture content of the shredded tobacco is prevented from being excessively reduced to 2% to 3%.
  • the material-to-gas ratio of the conveying expansion pipeline is increased, and the airflow conveying speed is unchanged, and the initial temperature of the airflow is constant. Under the same conditions, the temperature of the conveying expansion airflow can be reduced relatively quickly along the pipeline.
  • the optimal material-gas ratio is 0.25 ⁇ 0.3.
  • the conveyed expansion air is circulated in the pipeline system. Due to air leakage and carbon dioxide gasification in the system, the ratio of the volume of superheated steam to the volume of dry air in the circulating gas is less than the set value.
  • the steam with a temperature of 105 ° C ⁇ 130 ° C is sent to the circulating air stream and the flow rate is controlled, which can make the moisture content of the circulating air stream reach a fixed value and reduce Its temperature.
  • the dry basis moisture content of the shredded tobacco expanded by the air-flow conveying expansion pipeline system is controlled within the range of 6% to 9%.
  • the expanded shredded tobacco equipment provided by the present invention includes a quantitative feeding device, a feed air lock (6), a transport expansion pipe (5), a blanker (3), and a discharge air lock (1) , Fan (2), dust collector (19), exhaust fan (20), steam supply pipe (17), combustion furnace (14) and its connecting pipes and regulating valves.
  • a bypass pipe (10) and a regulating valve (11) are provided to send the circulating airflow with a low moisture content to a fixed temperature B—B cross section, mixed with conveying expansive airflow.
  • FIG. 1 is a schematic diagram of an expanded tobacco shredder device according to an embodiment
  • Figure 2 shows the curve of the temperature of the expansion gas flow along the pipeline under different material-gas ratio conditions
  • Figure 3 shows the relationship between the air temperature and the gas-to-gas ratio when the moisture content of the dry base in the expansion pipeline is reduced to 15% ⁇ 16.5%.
  • the airflow expansion pipe system is a closed cycle system, which is mainly composed of quantitative feeding equipment, feed air lock 6, transport expansion pipe 5, blanker 3, discharge air lock 1, fan 2, dust collector 19. Exhaust fan 20, steam supply pipe 17, combustion furnace 14 and its connecting pipes and regulating valve. Set the material-air ratio to 0.28.
  • the cut tobacco impregnated with carbon dioxide enters the metering tube 9 from the bin 8 and passes through the electronic belt scale 7 and the feed air lock 6 to be sent into an air flow conveying expansion pipe 5 at 330 ° C for expansion and drying.
  • the total length of pipe 5 (18.0m from the A_A section to the inlet of blanker 3, superheated steam in the air stream
  • the ratio of the volume to the volume of dry air is 9: 1
  • the air velocity of the A-A section is 48.0 m / so.
  • the expanded and dried tobacco is separated from the air stream in the feeder 3 and discharged by the discharge air lock 1.
  • the conveying expanded air is discharged from the fan 2 through the pipe 4.
  • a small part of the discharged airflow is purified by the regulating valve 21 and enters the dust collector 19, is discharged into the atmosphere by the fan 20, or is sent to the combustion furnace 14 for incineration; most of the airflow is recycled.
  • the steam supply pipe 16 is fed into the recycled air flow.
  • the steam at a temperature of 108 ° C is controlled by a regulating valve 17.
  • 60% enters the combustion furnace 14 through the regulating valve 15 and is heated to 330 ° C, and then sent to the conveying expansion pipe 5.
  • the system is also provided with a regulating valve 12 and a bypass pipe 13 for controlling the temperature of the air flow entering the AA cross section to be stable.
  • the adjustment valves 12 and 15 can be adjusted to appropriately reduce the heating gas flow rate, and an appropriate amount of low-temperature circulating air stream and the heating air stream are mixed through the pipe 13 so that the temperature of the conveying expansion air stream reaches a set value .
  • the temperature of the air flow in the expansion pipe 5 near the B-B section is reduced to 183 ° C, and the temperature of the airflow at the inlet of the blanker 3 dropped to 148 ° C.
  • the ratio of medium superheated steam volume to dry air volume is 9: 1.
  • the temperature of the air flow in the conveying expansion pipe 5 before approaching the B_B section is 198 ° C, and the temperature of the air flow at the inlet of the blanker 3 is 163 ° C.
  • the temperature of the air flow in the expansion pipeline 5 before approaching the B-B section is 233 ° C, and the air temperature at the inlet of the blanker 3 is 218 ° C.
  • Table 1 and Figure 2 show the changes in the temperature of the conveying expansion gas stream along the pipeline under different material-gas ratio conditions. It can be seen from Fig. 2 that different materials-gas ratios have different slopes for lowering the temperature of the conveying expansion gas stream. When the moisture content of shredded tobacco falls to a certain range, the temperature of the airflow decreases slowly. However, after mixing the unheated circulating low-temperature airflow with a fixed moisture content and the conveying expansion airflow, the slope of the airflow temperature's decrease has increased.
  • Figure 3 shows the relationship between the air temperature and the gas-to-gas ratio on the conveying expansion pipe 5 before approaching the B-B section. That is, the temperature of the airflow is inversely proportional to the material-gas ratio. With the increase of the material-to-gas ratio, the temperature of the air flow in the conveying expansion pipe decreases significantly.
  • the initial air temperature is high, which is a necessary condition for the expansion of tobacco shreds.
  • the temperature of the expanded air stream is reduced to 160 V, or even 140 ° C, which provides protection for the large amount of expanded shredded tobacco, the loss of scent substances, and the scorch smell in the smoke. Is an important way to improve the quality of expanded cut tobacco Table 1 The effect of different material-gas ratios on the temperature of the conveying expansion gas stream
  • Serial number A A blanking device Remarks The base of section B contains water

Landscapes

  • Manufacture Of Tobacco Products (AREA)

Abstract

L'invention porte sur un procédé de dilatation du tabac haché et sur l'équipement utilisé dans ce procédé. Après administration d'un agent de dilatation tel que CO2, le tabac haché est transporté dans un conduit de dilatation par l'écoulement d'air. L'écoulement de l'air est à une température comprise entre 320 °C et 380 °C et est rempli d'une vapeur de surchauffe utile comme milieu de dessiccation. Le rapport de masse du tabac haché à l'écoulement d'air inférieur à 0,17 est augmenté entre 0,25 et 0,30. A l'endroit désigné dans le conduit de dilatation, la teneur en humidité du tabac haché basé sur la siccité tombe entre 15,0 et 16,5 %, l'écoulement d'air pour l'acheminement étant mélangé à l'écoulement d'air de circulation à une certaine humidité et à une température très basse. La température de l'écoulement d'air à l'intérieur du conduit de dilatation peut ainsi tomber à 160 °C, ou même à 140 °C, afin d'éviter la surchauffe du tabac. Du fait que l'humidité du tabac dilaté sur la base de la siccité est régulée entre 6 et 9 %, la capacité de remplissage du tabac reste élevée et son taux de brisures décroît. En conséquence, le tabac non seulement ne perd pas son arôme, mais ne présente pas de fanaison ni d'odeur de poussière.
PCT/CN2003/000512 2003-06-30 2003-06-30 Procede et equipement pour la dilatation du tabac hache WO2005000043A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2003/000512 WO2005000043A1 (fr) 2003-06-30 2003-06-30 Procede et equipement pour la dilatation du tabac hache

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2003/000512 WO2005000043A1 (fr) 2003-06-30 2003-06-30 Procede et equipement pour la dilatation du tabac hache

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WO2005000043A1 true WO2005000043A1 (fr) 2005-01-06

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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005062725B3 (de) * 2005-12-22 2007-07-12 Hauni Maschinenbau Ag Stromtrockner zum Trocknen eines faserförmigen Produkts
CN103610226A (zh) * 2013-12-16 2014-03-05 福建中烟工业有限责任公司 一种用于烟草气流干燥的含水率控制方法
CN103704867A (zh) * 2014-01-02 2014-04-09 福建中烟工业有限责任公司 一种提高梗丝品质的方法
CN104305515A (zh) * 2014-08-13 2015-01-28 上海烟草集团有限责任公司 叶丝干燥工序中叶丝含水率稳定性的诊断***和诊断方法
WO2016145893A1 (fr) * 2015-03-18 2016-09-22 贵州中烟工业有限责任公司 Système d'expansion et d'imprégnation de tabac haché de configuration étanche
WO2016181180A1 (fr) * 2015-05-08 2016-11-17 Comas - Costruzioni Macchine Speciali - S.P.A. Procédé amélioré pour l'expansion et le séchage du tabac et installation pour sa mise en œuvre
CN108260841A (zh) * 2016-12-30 2018-07-10 贵州中烟工业有限责任公司 一种制叶丝化生产线及制叶丝的方法
CN108338395A (zh) * 2018-01-18 2018-07-31 河南中烟工业有限责任公司 一种有助于提高叶丝结构均匀性的分组加工工艺
CN108851165A (zh) * 2018-07-30 2018-11-23 重庆烟叶复烤有限公司万州复烤厂 一种烟草恒温润叶方法
CN110850836A (zh) * 2019-12-11 2020-02-28 中国烟草总公司郑州烟草研究院 一种隧道式增温增湿设备的出口物料含水率定量控制方法
CN110946306A (zh) * 2019-12-12 2020-04-03 河南中烟工业有限责任公司 一种基于滚筒式叶丝回潮的质量控制方法及***
CN111165866A (zh) * 2019-12-12 2020-05-19 河南中烟工业有限责任公司 一种基于气流式梗丝干燥的质量控制方法及***
CN112401294A (zh) * 2020-11-26 2021-02-26 湖北中烟工业有限责任公司 一种基于风力送丝智能诊断分析***的诊断分析方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4336814A (en) * 1977-08-08 1982-06-29 Philip Morris Incorporated Process for expanding tobacco
CN1063208A (zh) * 1991-01-15 1992-08-05 中国烟草总公司郑州烟草研究院 液体二氧化碳膨胀烟草的改良工艺及装置
US6209546B1 (en) * 1998-11-30 2001-04-03 Truman W. Ellison Apparatus and method for improved hydrate formation and improved efficiency of recovery of expansion agent in processes for expanding tobacco and other agricultural products
CN1426708A (zh) * 2001-12-21 2003-07-02 黄嘉礽 烟丝膨胀方法及设备

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4336814A (en) * 1977-08-08 1982-06-29 Philip Morris Incorporated Process for expanding tobacco
CN1063208A (zh) * 1991-01-15 1992-08-05 中国烟草总公司郑州烟草研究院 液体二氧化碳膨胀烟草的改良工艺及装置
US6209546B1 (en) * 1998-11-30 2001-04-03 Truman W. Ellison Apparatus and method for improved hydrate formation and improved efficiency of recovery of expansion agent in processes for expanding tobacco and other agricultural products
CN1426708A (zh) * 2001-12-21 2003-07-02 黄嘉礽 烟丝膨胀方法及设备

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102005062725B3 (de) * 2005-12-22 2007-07-12 Hauni Maschinenbau Ag Stromtrockner zum Trocknen eines faserförmigen Produkts
CN103610226A (zh) * 2013-12-16 2014-03-05 福建中烟工业有限责任公司 一种用于烟草气流干燥的含水率控制方法
CN103704867A (zh) * 2014-01-02 2014-04-09 福建中烟工业有限责任公司 一种提高梗丝品质的方法
CN104305515A (zh) * 2014-08-13 2015-01-28 上海烟草集团有限责任公司 叶丝干燥工序中叶丝含水率稳定性的诊断***和诊断方法
WO2016145893A1 (fr) * 2015-03-18 2016-09-22 贵州中烟工业有限责任公司 Système d'expansion et d'imprégnation de tabac haché de configuration étanche
WO2016181180A1 (fr) * 2015-05-08 2016-11-17 Comas - Costruzioni Macchine Speciali - S.P.A. Procédé amélioré pour l'expansion et le séchage du tabac et installation pour sa mise en œuvre
CN107690286A (zh) * 2015-05-08 2018-02-13 Comas-建设专用机股份公司 用于膨胀和干燥烟草的改进方法以及用于实施它的设备
CN108260841A (zh) * 2016-12-30 2018-07-10 贵州中烟工业有限责任公司 一种制叶丝化生产线及制叶丝的方法
CN108338395A (zh) * 2018-01-18 2018-07-31 河南中烟工业有限责任公司 一种有助于提高叶丝结构均匀性的分组加工工艺
CN108338395B (zh) * 2018-01-18 2020-10-30 河南中烟工业有限责任公司 一种有助于提高叶丝结构均匀性的分组加工工艺
CN108851165A (zh) * 2018-07-30 2018-11-23 重庆烟叶复烤有限公司万州复烤厂 一种烟草恒温润叶方法
CN110850836A (zh) * 2019-12-11 2020-02-28 中国烟草总公司郑州烟草研究院 一种隧道式增温增湿设备的出口物料含水率定量控制方法
CN110946306A (zh) * 2019-12-12 2020-04-03 河南中烟工业有限责任公司 一种基于滚筒式叶丝回潮的质量控制方法及***
CN111165866A (zh) * 2019-12-12 2020-05-19 河南中烟工业有限责任公司 一种基于气流式梗丝干燥的质量控制方法及***
CN110946306B (zh) * 2019-12-12 2022-09-23 河南中烟工业有限责任公司 一种基于滚筒式叶丝回潮的质量控制方法及***
CN112401294A (zh) * 2020-11-26 2021-02-26 湖北中烟工业有限责任公司 一种基于风力送丝智能诊断分析***的诊断分析方法
CN112401294B (zh) * 2020-11-26 2022-06-07 湖北中烟工业有限责任公司 一种基于风力送丝智能诊断分析***的诊断分析方法

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