US3594918A - Apparatus for treating fibrous material - Google Patents

Apparatus for treating fibrous material Download PDF

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Publication number
US3594918A
US3594918A US784693A US3594918DA US3594918A US 3594918 A US3594918 A US 3594918A US 784693 A US784693 A US 784693A US 3594918D A US3594918D A US 3594918DA US 3594918 A US3594918 A US 3594918A
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Prior art keywords
drum
assembly
fibrous material
heat exchange
medium
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US784693A
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English (en)
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Wilhelm Quester
Carl Steinmetz
Josef Clemens
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Wilh Quester Maschinenfabrik GmbH
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Wilh Quester Maschinenfabrik GmbH
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    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
    • F26B11/18—Machines or apparatus for drying solid materials or objects with movement which is non-progressive on or in moving dishes, trays, pans, or other mainly-open receptacles
    • F26B11/181—Machines or apparatus for drying solid materials or objects with movement which is non-progressive on or in moving dishes, trays, pans, or other mainly-open receptacles the receptacle being a foraminous, perforated or open-structured drum or drum-like container, e.g. rotating around a substantially horizontal or vertical axis; the receptacle being multiple perforated drums, e.g. in superimposed arrangement
    • F26B11/182—Arrangements for the supply or exhaust of gaseous drying medium, e.g. perforated tubes
    • 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
    • A24B3/04—Humidifying or drying tobacco bunches or cut tobacco

Definitions

  • APPARATUS FOR TR'EATING FIBROUS ABSTRACT This disclosure provides an apparatus for drying MATERIAL fibrous rnatenals such as tobacco.
  • the treatment medium may be air used in a drying operation [50] Field ofSearch 34/l3, l3l, or other t e of treating fluids used in o erations uch as 129, 33, 139, 142, 212, 213, 217 remoisturizing or impregnating.
  • Various auxiliary devices may References Cited be used to control the atmospheric conditions within the drum and the treatment medium which is passed transversely UNITED STATES PATENTS through the charge of fibrous material moving through the 892,901 7/1908 Schwartz 34/131 drum in an axial direction.
  • the processing of fibrous materials such as tobacco includes such operations as drying, remoisturizing and impregnating treatments.
  • a typical prior art process of drying a moist tobacco is generally performed in the tobacco processing industry with a drum dryer.
  • the moist tobacco is conveyed axially in a rotary drum that is equipped with means for conveying the material in an axial direction as the drum revolves.
  • a heated current of air is passed through the drum to remove the moisture content of the tobacco.
  • These prior art processing treatments require the dry air to be axially guided through the drum in either a direction corresponding to or flowing against the direction of tobacco movement through the drum dryer. The efficiency of such drum dryers is limited.
  • Process parameters include the strength of the air current through the drum as well as the temperature of the air being used. These parameters are limited in their control and therefore the tobacco is not hurried through the drum to accomplish the desired drying effect. There is an occasional over intensive drying occurring at the beginning of the operation under conditions which presently prevail in the prior art. Generally, the drying process cannot be sensitively controlled to the degree desired.
  • the known drum dryers are often used in combination with direct or indirect heating of the drum wall itself. Furthermore, it is uneconomical to perform the drying operation in different zones within the drum dryer.
  • the prior art presently uses extensive regulating devices to achieve the desired drying results. These particular extensive regulating devices are complex, expensive and prone to breakdown. Other disadvantages attendant the prior art processing operations used in the treating of fibrous materials are well known.
  • fibrous material such as tobacco requires various types of treatment before obtaining the final product.
  • tobacco must be treated in several different ways before it is in a cut condition for subsequent processing in a cigarette machine.
  • Prior art fabrication processes involve the removal of tobacco from one processing device to another through the use of various types of conveying devices. These conveying devices include belt devices such as conveyor belts and double belt conveyors. Processing stages included in the preparation of tobacco are impregnation, flavoring, toasting at elevated temperatures, drying, roasting and the like.
  • Various devices and assemblies are used for each of these different treatment processes. The various devices are located at different points within the processing plant and therefore specific transportation problems must be met. The tobacco is exposed to the atmosphere during the transporting from one operation to another.
  • the primary object of this invention is to provide an apparatus for treating fibrous material such as tobacco in a simple and direct way to eliminate the attendant disadvantages prevailing in the use of prior art apparatus and processing operations.
  • Another object of this invention is to treat a continuous moving supply of fibrous material with a current of fluid material that is flowing in a direction substantially normal to the direction of movement of the supply of fibrous material.
  • a further object of this invention is to provide a drying operation wherein a heated current of air is passed substantially transversely to the path of movement of a continuous supply of fibrous material passing through a treating zone.
  • paratus having a much greater capacity and a much higher efficicncy in the treatment of fibrous material with a fluid medium than any known apparatus in the prior art.
  • a further object of this invention is to provide an apparatus which includes a rotary drum-having means for supplying a flow of fluid-treating medium in a radial direction of said rotary drum.
  • This invention involves the directing of a fluid medium through a fibrous material which is moving through a process treatment zone.
  • the flow of the fluid medium is substantially normal to the movement of the fibrous material through the treatment zone.
  • the apparatus of this invention includes a revolvable drum through which the fibrous material passes in an axial direction.
  • the drum includes structural means to direct the fluid medium in a radial direction of the drum. This necessarily causes the fluid medium to pass substantially normal or transversely to the flow of the fibrous material as it moves axially through the revolving drum. 7
  • the radially directed fluid medium may be advantageously divided up into partial currents along the length of the fibrous material as it moves through the apparatus.
  • These partial currents can be effectively regulated with respect to temperature, volume of air, velocity and other like parameters.
  • the parameters are controlled as a function of the condition of the fibrous material exposed to the partial air currents along the length of the material being treated.
  • the particular processing operation is therefore easily supervised, controlled and regulated during the material s entire stay within the treating zone.
  • the division of the total volume of air into partial air currents affords the construction of apparatus having capacity which is much greater than any heretofore known. Large amounts of fibrous material can now be quickly and efficiently treated.
  • the apparatus of this invention therefore provides a considerable saving in space as, in addition to initial capital outlay and subsequent operating cost, the drying process used in the treatment of moistened tobacco may now be carried out in one single device whereas previously a number of smaller installations were needed.
  • the particular method of operation provides for a sensitivity of control of various phases of the drying process that is considerably improved. That is, the particular drying process may be adapted in a distinctive manner to the particular nature of the fibrous material being treated.
  • the current of air can be variously timed and the degree of drying can be varyingly adjusted as desired while the fibrous material is passing through the revolving drum.
  • the fluid medium may include a certain amount of moisture. At the same time, this moisture may be heated or cooled as desired.
  • the use of such moisture within the air current is highly desirable where the fibrous material is tobacco. It is known that the tobacco quality and other characteristics are affected by various process conditions that exist during the overall tobacco-drying operation. That is, it is desired that the material should occasionally be in another condition than in a continuously progressive drying state.
  • the apparatus of this invention is directed to the carrying out of such a conditioning process.
  • An embodiment of the apparatus of this invention includes a rotary drum having a circumferential wall provided with grilled surfaces.
  • the drum is surrounded by a jacket construction which includes both inlet and outlet openings located on either side of the rotatable drum.
  • the inlet and outlet openings together with the grilled surfaces enable the passage of air through the rotatable drum as the fibrous material moves axially therethrough.
  • a heating appliance is included with the apparatus for controlling the temperature of the air passing through the drum.
  • a diversion channel is associated with each pair of inlet and outlet openings.
  • a fan and heater means are provided in each of the channels and may be independently adjusted with respect to each individual diversion channel. Any suitable device is included in the diversion channel to provide passage for an airflow.
  • the heaters are controlled by thermostats to correlate the temperature of the air through the channel with the temperature of the surrounding atmosphere
  • Another embodiment of the invention includes the use of at least two drums which are connected in series with each other.
  • This assembly of drums is provided with a transverse flow of fluid medium for the purpose of treating the fibrous material as it passes axially through the drum assembly.
  • the specific embodiment entails the use of drums having differing diame ters being connected to provide successive zones for accomplishing successive steps in an overall treatment process.
  • This type of an assembly not only functions as a treatment device but also as a unit for transporting fibrous material from one treatment zone to another. When the drums of the assembly are set closely together longitudinally, the fibrous material is automatically conveyed from one treatment device to the next. The fibrous material is ejected directly into the next drum by the step arrangement of the drums having different size diameters thereby conveying the fibrous material axially into the second drum.
  • the fluid treatment medium is passed transversely through the drum assembly so that there are not only different conditions existing from drum to drum but there may also be treat ment sections which spatially succeed one another within a single drum of the assembly.
  • the fluid treatment medium is so introduced into the drum assemblies that the condition of one section does not disturb another in carrying out the separate operations therein.
  • This separation of treatment sections is accomplished without the necessary use of a point separating intermediate wall, Therefore, the fibrous material is not in any way hindered on its passage through the drum assembly.
  • the use of separate treatment sections within each drum and from drum to drum enables control to be accomplished within each section to function independently and separately. It is obvious therefore that various process steps may be conducted along the entire length of the fibrous material supply as it passes through the drum assembly.
  • a specific embodiment of the drum assembly provides for conditioning in the first drum which also includes a remoisturizing zone.
  • the following drum is used for impregnation.
  • the third drum is used for flavoring the fibrous tobacco and a fourth drum is used for toasting and/or roasting the tobacco.
  • the use of the drum assembly having the successive process operations also automatically moves the tobacco from the first drum to the last.
  • the continuous revolving of the drums within the assembly insures the continual loosening effect to be applied to the tobacco during treatment. This clearly exposes the tobacco to the full force of the fluid medium flowing transversely through the drum assembly.
  • the obvious advantages over the use of separate treatment stations involving the necessity for particular transportation devices is clearly seen by the use of the drum assembly of this invention.
  • the use of additional devices to heat the walls of the drums is unnecessary to perform the processing operation.
  • the speed at which the drums revolve within the apparatus controls the rate at which the fibrous material falls through the transversely flowing fluid medium.
  • the control of the drum peripheral speed clearly provides an opportunity for a simple and quick regulating of the time factor in the contacting of the fluid medium and the fibrous material.
  • the respective drdm's might be revolved in opposite directions. This type of operation provides both total mixing and turbulence of the fibrous material within the drum-assembly. At the same time, the material can be fed in diametrically opposite directions. The advantages of such an operation with regard to the treatment process are obvious.
  • FIG. 1 shows a side elevational view of an apparatus made in accordance with this invention
  • FIG. 2 shows a top plan view ofthe apparatus of FIG. 1,
  • FIG. 3 is a rear elevational view ofthe apparatus of FIG. 1,
  • FIG. 4 is a front elevational view of the apparatus as shown in FIG. 1,
  • FIG. 5 is a cross-sectional view along line V-V of FIG. I.
  • FIG. 6 is a side elevational view of another embodiment of an apparatus made in accordance with this invention.
  • a drum 2 is rotatably mounted in a casing l.
  • Runner rings 3 are mounted on the circumference of the drum 2 and are set on rollers 4.
  • a drive motor 5 includes a pulley wheel 7 mounted on the shaft of the motor 5.
  • the belt 6 runs over the pulley wheel 7 and through a ring 8 on the drum 2 to thereby effect the driving of the said drum 2.
  • a tightener 9 is interposed between the motor 5 and drum 2 to control the tension on the belt 6.
  • a conveyor device 11 transports fibrous material into a loading hopper 10 which leads through the input hood 10a to the interior of the drum 2.
  • the conveyor device 11 ' may be a conveyor belt, a shaker loader or the like.
  • a discharge hood 12 is mounted at the other end of the drum 2.
  • the fibrous material drops out of the drum 2, falls through the discharge hood l2 and onto a conveyor device 13 which carries the material away.
  • a perforated portion 2a of the drum 2 is located around the circumference of the drum to allow air to penetrate into or emerge from the interior of the drum 2.
  • This perforated portion 2a may comprise sieves, grilles or the like.
  • the perforated portion 2a may be interchangeable so that the particular sizeof the openings may be varied depending upon the particular use of the apparatus. With the interchangeablc characteristic, the perforated portion 2a might be easily removed for quick cleaning or for simple replacement if it becomes damaged in any way.
  • Guide means 2b which may be composed of plates and/or rows of rods mounted around the inside of the drum 2. The guide means 2b have an oblique position with respect to the drum 2 thereby causing the fibrous material to move towards the exit as the drum 2 rotates.
  • Air supply channels 15 are provided along the circumference of the drum. 2 in a substantially transverse or radial direction to the longitudinal axis. Air is supplied through these channels 15 to treat the fibrous material as it passes through the drum 2.
  • the supply channels or nozzles 15 lead into a jacket member 14 which surrounds the drum 2.
  • the air used for treatment enters the drum through the nozzles 15 and is exhausted through nozzles 16 which are provided as outlet openings. The air recirculates from the exhaust nozzles 16 back to the supply nozzles 15 outside of the drum 2 by way of the chamber 17.
  • a heat exchange member 18 located within the chamber 17 comprises a steam-heated body having a cluster of tubes. The heat exchange member 18 may be mounted in an oblique position within the chamber 17.
  • a channel 19 is provided adjacent the nozzles 16 to direct the exhausted air from the drum 2 to the heat exchange member 18.
  • a fan 21 is mounted in a channel 20 which leads from the chamber 17 to the supply nozzles 15. .
  • the fan 21 may be a high-performance fan having vanes which allow conveyance of the air in one direction. In this specific embodiment, it may be desired to have the air move from above to below. The reversal of the direction of the rotation of the fan 21 would cause the air to move in the opposite direction from above to below.
  • the vane shaft 22 of the fan 21 is driven by a belt 23 from a motor 24. The revolutions per minute of the motor 24 can be changed in any conventional manner known in the prior art.
  • the speed of the belt 23 driving the vane shaft 22 may be advantageously changed by altering the gearing or exchanging the size of the drive pulley located on the motor 24.
  • Regulator valves 25 are mountedin the apparatus between the channel and the supply nozzles 15. The valves enable the operator to distribute the air as evenly as possible over the surface of the drum 2 in the most efficient manner.
  • the heat exchange member 18 may be supplied with either a heating medium or cooling medium depending upon the desired temperature of the air passing from the nozzles 16 and recirculating through the system to the supply nozzles 15.
  • At least two air circulation assemblies comprising inlet and outlet nozzles 15 and 16, air channel 19, heat exchange member 18, chambers 17 and 20, and fan 21 are distributed over the entire length of the drum 2.
  • the location of such air circulation assemblies affords the opportunity for generating different temperatures in the various locations of the drum 2. This control of temperature is effected by altering the steam pressure in the heat exchange member 18 and/or the speed of the fans 21.
  • the direction of airflow through a first air circulation assembly may be alternated with the flow direction of air through an adjacent air circulation assembly.
  • a first air circulation assembly may have the air flowing from nozzles 15 through the drum 2 and exhaust through nozzles 16 while an adjacent air circulation assembly may have air flowing from the nozzles 16 through the drum 2 and exhaust through the nozzles 15 on the other side of the said drum 2.
  • the distribution of air circulation assemblies along the length of the drum 2 enables the formation of cooled zones along the drum 2 through which the fibrous material would necessarily pass as it moves longitudinally through the said drum 2.
  • a distributor point 26 is mounted on the front side of the casing 1 to supply steam to the heat exchange members 18.
  • Each heat exchange member 18 can thereby be controlled automatically and independently of heat exchange members located in air circulation assemblies adjacent thereto.
  • the valves 27 are mounted in the apparatus to effectively control the flow of steam to the heat exchange members 18.
  • Thermostats and hydrometers 28 are located at the other side of the casing 1 from the valves 27.
  • the atmospheric conditions within the apparatus are measured by the thermostats and hydrometers 28 and thereby automatically control the valves 27 which supply the heat exchange members 18.
  • a recorder 29 may be mounted within the apparatus of this invention for the purpose of recording the values of the atmospheric conditions on a continuous basis.
  • Part of the air exhausted from nozzles 16 is diverted and led off through a chamber or branch channel 30 through the use of guide plates 31 located in the nozzles 16.
  • An exhaust fan 32 draws moisture-laden air from the exhaust nozzles 16 through the branch channel 30.
  • a slight upward draught may be provided within the discharge hood 12 by locating a diversion channel 33c within the input hopper 10 10 the said hood 12.
  • Operation of the apparatus of this invention may be conducted in various ways so that different treatment effects may be obtained.
  • a pure drying operation, drying with subsequent cooling, and the combination of drying, cooling and remoisturizing may be effected with the apparatus of this invention.
  • the remoisturizing of a very warm tobacco of from about to C is extremely difficult and requires a long period of time. Therefore, to attain a much more efficient remoisturizing operation, the temperature of the tobacco being treated must be reduced very quickly to as low a temperature as possible. That is, a much better remoisturizing of the tobacco takes place at lower temperatures. Overly warm tobacco is not desirable at the end of the process.
  • tobacco conditioning plants can be constantly set for remoisturization.
  • This factor provides a uniformly moist tobacco ready for further processing as an end product from the conditioning plant
  • the apparatus of this invention effects this ability for constantly setting remoisturization by maintaining the cooling air at a uniform temperature over the working period of the conditioning plant which extends over a period of days.
  • the more moist the tobacco end product is from the conditioning plant the better the tobacco may be operated on at subsequent work stations by other machines. This condition of the tobacco enables the machines to operate with less regulation.
  • neutral areas be located between the drying, cooling and remoisturizing zones so that the effects of the cooling zone will not affect the drying and remoisturizing operations within the drum 2.
  • a section of the drum 2 is constructed without sieves. This section may be about one meter in length and placed between the sieves of the drying zone and the cooling zone. It is important that the smallest possible movement of air takes place within this particular neutral zone. This minimizes the influence of the cooling zone on the drying zone and vice versa.
  • the device of FIG. 6, generally designated 35 has four drums 36, 37, 38 and 39. These drums 36, 37, 38 and 39 have a progressively larger diameter in the direction of movement through the said apparatus, These drums 36, 37, 38 and 39 are interconnected so that the material being treated is automatically conveyed from one drum to the next. Sieves are provided on the circumference of each drum to allow the fluid-treating medium to enter or leave the interior of each of the drums. Guide plates or vanes (not shown) are mounted in each of the drums so that the material being treated is conveyed while each drum is revolving. These guide plates or vanes have an oblique position relative to the drum exit to effect the movement of material and pass it on to the adjacent drum.
  • An optional number of sections may be provided in each of the drums where separate radially arranged nozzles are located for either feeding in or withdrawing the treating material;
  • the drums 36, 37, 38 and 39 are each driven by an adjustable independent drive motor 40, 41, 42 and 43 respectively. Any suitable drive connection such as belts or the like may be used to revolve the respective drum in one direction or the other as provided by the respective drive motor. The direction of rotation of the drums can be easily adjusted and controlled.
  • a conveyor device 11 supplies fibrous material to the drum assembly by way of the input hopper 10. The treated fibrous material which drops out of the drum 39 is carried away on a conveyor device 13.
  • , 42 and 43 are housed in a casing 44.
  • the drum 36 is provided with at least four treating zones. In each of these zones a fluid-treating medium can flow transversely through the fibrous material being conditioned. The entire conditioning step of the fibrousmaterial-processing operation will be accomplished in the drum 36.-The last section of the drum 36 will be capable of remoisturizing the tobacco.
  • the succeeding drum 37 is used for impregnating the material.
  • the first section of the drum 37 connected directly to the last section of drum 36 is used to prepare the conditioned fibrous material for impregnating directly after passing through the remoisturizing zone.
  • Each of the individual sections in drum 37 is intended for preparing the fibrous material for the impregnation treatment.
  • the succeeding drum 38 performs the task of flavoring the fibrous material.
  • This drum 38 may also be divided into a pretreatment and post-treatment configuration to work on the fibrous material accepted from drum 37 and preliminarily treat fibrous material going into drum 39. It is noted that the direction'of the flow of the treating medium may change diametrically from drum to drum or from section to section within each of the drums. Sections may also be provided wherein the material is not exposed to any special treatment, In this way, the material is left alone to allow the previous treatment in the preceding section to take its full effect on the fibrous material being treated.
  • the drum 39 may be used for a drying or toasting operation.
  • the overall plant is clearly not restricted to four successive drums as shown in this particular embodiment. That is, as many drums as desired may be used to directly succeed one another to accomplish the various functional treatments required in the overall processing of the tobacco material.
  • each section of a drum in the assembly can be equipped with an independent diversion channel in which a heat exchange device or other device may be placed to accomplish the desired results.
  • a cooler may be incorporated instead of a heating means.
  • the fluid medium used to treat the tobacco material may be fed from a fresh supply to each section or in a recirculated manner.
  • Separate regulating and control units may be associated with each section located along within the drum assembly of this invention.
  • An apparatus for treating fibrous material such as tobacco with a fluid treatment medium comprising:
  • a drum means rotatably mounted within a casing and having perforations along the outer circumference thereof,
  • each circulation assembly having an inlet and outlet means for fluid treatment medium flow, fan means for ef fecting flow, heat exchange means to regulate the temperature of the fluid treatment medium and means to independently control the fan means and a heat exchange means within each said assembly, and
  • said fluid treatment medium fiow through the drum means from the inlet to outlet means being in a radial direction with respect to the axis ofthe drum means.
  • neutral area structural means comprises a nonpcrforated section along said drum means between said circulation assemblies having said different treatment atmospheres.
  • drum means comprises an assembly of at least two drums located end to end with respect to each other to cause the fibrous material to move through successive drums.
  • said driving means includes means to drive two successive drums in two different directions.
  • An apparatus for treating fibrous material such as tobacco with a fluid treatment medium comprising:
  • a drum means rotatably mounted within a casing and having perforations along the outer circumference thereof,
  • said casing includes a jacket structure surrounding the drum means, an input hood mounted at one end of the drum means and an output hood mounted at the other end of the drum means,
  • said input hood includes adjustable valves to control the atmosphere within each said circulation assembly
  • each circulation assembly having an inlet and outlet means for fluid treatment medium flow, fan means for effecting flow, heat exchange means to regulate the temperature of the fluid treatment medium and means to independently control the fan means and a heat exchange means within each said assembly,
  • said inlet and outlet means comprises a pair of nozzles located in said jacket structure
  • said fluid treatment medium flow through the drum means from the inlet to outlet means being in a radial direction with respect to the axis of the drum means.
  • control means includes means to reverse the direction of fluid medium flow within each said assembly.
  • said casing includes an exhaust channel branch to direct exhaust fluid medium to the surrounding atmosphere
  • said heat exchange means comprises a member disposed at an oblique position with respect to the horizontal.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing Of Cigar And Cigarette Tobacco (AREA)
  • Drying Of Solid Materials (AREA)
US784693A 1967-12-23 1968-12-18 Apparatus for treating fibrous material Expired - Lifetime US3594918A (en)

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DEQ0000984 1967-12-23
DEQ0000994 1968-03-15

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Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3815257A (en) * 1973-04-04 1974-06-11 Challenge Cook Bros Inc Continuous laundry dryer
US3935648A (en) * 1974-11-07 1976-02-03 Cox Jack R Tobacco curing apparatus and method
US4015930A (en) * 1975-09-04 1977-04-05 Grantham Frederick W Continuous laundry drying apparatus
JPS53107772A (en) * 1977-03-02 1978-09-20 Kumeta Seisakushiyo Kk Rotary ventilation type dryer variable in hot air blast position
US20020040643A1 (en) * 2000-09-25 2002-04-11 Ware Gerald J. Desiccation apparatus and method
US20050005653A1 (en) * 1998-05-12 2005-01-13 Monteiro Andre Fraser Washing machine
CN103859567A (zh) * 2014-04-03 2014-06-18 贵州大学 一种热量分级循环利用的烟草烘烤方法及其系统结构
US20150132484A1 (en) * 2013-11-12 2015-05-14 Nous, Llc System for coating granular materials
US20190059437A1 (en) * 2017-08-22 2019-02-28 Heat & Control, Inc. Tumble drum adapted for recovery and suppression of airborne flavoring material and method
WO2020245378A1 (en) * 2019-06-05 2020-12-10 Philip Morris Products S.A. Dryer for receiving herbaceous material with independently controlled heating subsystems
CN115153078A (zh) * 2022-08-30 2022-10-11 佳木斯大学 一种智能烟草干燥装置及控制方法

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Publication number Priority date Publication date Assignee Title
DE2836183C2 (de) * 1978-08-18 1982-11-18 Hans 8500 Nürnberg Henig Verfahren zur Trocknung einer Charge schüttfähiger Massenteile sowie Vorrichtung zur Durchführung des Verfahrens

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US892901A (en) * 1906-11-22 1908-07-07 Philadelphia Textile Mach Co Rotary drying-machine.
US1259101A (en) * 1917-09-19 1918-03-12 Arthur W Hutchins Drying-machine.
US1531846A (en) * 1921-06-03 1925-03-31 American Laundry Mach Co Drying machine
US2463683A (en) * 1947-08-28 1949-03-08 Harry W Fay Laundry conditioning tumbler
US3402479A (en) * 1965-11-17 1968-09-24 Hauni Werke Koerber & Co Kg Method and apparatus for treating tobacco

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US892901A (en) * 1906-11-22 1908-07-07 Philadelphia Textile Mach Co Rotary drying-machine.
US1259101A (en) * 1917-09-19 1918-03-12 Arthur W Hutchins Drying-machine.
US1531846A (en) * 1921-06-03 1925-03-31 American Laundry Mach Co Drying machine
US2463683A (en) * 1947-08-28 1949-03-08 Harry W Fay Laundry conditioning tumbler
US3402479A (en) * 1965-11-17 1968-09-24 Hauni Werke Koerber & Co Kg Method and apparatus for treating tobacco

Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3815257A (en) * 1973-04-04 1974-06-11 Challenge Cook Bros Inc Continuous laundry dryer
US3935648A (en) * 1974-11-07 1976-02-03 Cox Jack R Tobacco curing apparatus and method
US4015930A (en) * 1975-09-04 1977-04-05 Grantham Frederick W Continuous laundry drying apparatus
JPS53107772A (en) * 1977-03-02 1978-09-20 Kumeta Seisakushiyo Kk Rotary ventilation type dryer variable in hot air blast position
US7197901B2 (en) * 1998-05-12 2007-04-03 Dyson Technology Limited Washing machine
US20050005653A1 (en) * 1998-05-12 2005-01-13 Monteiro Andre Fraser Washing machine
US8257767B2 (en) 2000-09-25 2012-09-04 Ware Gerald J Desiccation apparatus and method
US20080181993A1 (en) * 2000-09-25 2008-07-31 Ware Gerald J Desiccation apparatus and method
US20020040643A1 (en) * 2000-09-25 2002-04-11 Ware Gerald J. Desiccation apparatus and method
US20150132484A1 (en) * 2013-11-12 2015-05-14 Nous, Llc System for coating granular materials
US10201820B2 (en) * 2013-11-12 2019-02-12 Nous, Llc System for coating granular materials
US11103884B2 (en) 2013-11-12 2021-08-31 Nous, Llc System for coating granular materials
CN103859567A (zh) * 2014-04-03 2014-06-18 贵州大学 一种热量分级循环利用的烟草烘烤方法及其系统结构
US20190059437A1 (en) * 2017-08-22 2019-02-28 Heat & Control, Inc. Tumble drum adapted for recovery and suppression of airborne flavoring material and method
WO2020245378A1 (en) * 2019-06-05 2020-12-10 Philip Morris Products S.A. Dryer for receiving herbaceous material with independently controlled heating subsystems
CN115153078A (zh) * 2022-08-30 2022-10-11 佳木斯大学 一种智能烟草干燥装置及控制方法

Also Published As

Publication number Publication date
NL161574B (nl) 1979-09-17
NL6818458A (nl) 1969-06-25
GB1246998A (en) 1971-09-22
NL161574C (nl) 1980-02-15

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