EP0116565A1 - Trocknungsanlage zum trocken eines stoffes im chargenbetrieb. - Google Patents
Trocknungsanlage zum trocken eines stoffes im chargenbetrieb.Info
- Publication number
- EP0116565A1 EP0116565A1 EP83902238A EP83902238A EP0116565A1 EP 0116565 A1 EP0116565 A1 EP 0116565A1 EP 83902238 A EP83902238 A EP 83902238A EP 83902238 A EP83902238 A EP 83902238A EP 0116565 A1 EP0116565 A1 EP 0116565A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- drying
- chamber
- dried
- belts
- substance
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
- 238000001035 drying Methods 0.000 title claims abstract description 101
- 239000000463 material Substances 0.000 title claims abstract description 19
- 238000009434 installation Methods 0.000 claims abstract description 3
- 239000000126 substance Substances 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 11
- 238000010981 drying operation Methods 0.000 claims description 5
- 238000001291 vacuum drying Methods 0.000 claims 1
- 238000010438 heat treatment Methods 0.000 abstract description 8
- 238000000605 extraction Methods 0.000 abstract 1
- 239000004744 fabric Substances 0.000 description 5
- 239000007789 gas Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000001413 cellular effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000001599 direct drying Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012263 liquid product Substances 0.000 description 1
- 238000010327 methods by industry Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000004810 polytetrafluoroethylene Substances 0.000 description 1
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B9/00—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards
- F26B9/06—Machines or apparatus for drying solid materials or objects at rest or with only local agitation; Domestic airing cupboards in stationary drums or chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/18—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact
- F26B3/20—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact the heat source being a heated surface, e.g. a moving belt or conveyor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B5/00—Drying solid materials or objects by processes not involving the application of heat
- F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
- F26B5/041—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum for drying flowable materials, e.g. suspensions, bulk goods, in a continuous operation, e.g. with locks or other air tight arrangements for charging/discharging
Definitions
- the invention relates to a method for drying a substance in batch operation in a closed drying room with the addition of heat, the substance being dried after being introduced into the drying room on at least one stationary drying surface, and a drying installation for carrying it out.
- Drying fabrics i.e. The removal of moisture from all kinds of substances is a frequently used process engineering process, with the aid of which the substances are to be preserved or brought into a condition suitable for transport and further processing.
- drying under artificial heat is a frequently used method.
- the dry goods are immediately hot gases, e.g. Fire gases, exposed, while in the indirect drying process, which is used especially for sensitive dry goods, drying with air, water or the like heated by heat exchangers. , he follows.
- the present invention relates to an indirect drying process which is carried out using a drying system is carried out.
- a drying system suitable for this is known in two versions.
- the drying system is designed as a drying cabinet.
- the drying cabinet is a closed chamber, in the interior of which heating plates are arranged in several layers, which are heated by a heat transfer medium.
- the material to be dried is distributed, for example manually or with a feed device, onto trays which are placed in the drying cabinet.
- the batch introduced in this way is dried with the addition of heat, the internal pressure being reduced to vacuum and adaptable to the drying process.
- the batch distributed in the trays is removed from the drying cabinet and the batch is prepared for drying the next batch.
- the drying process can be ideally controlled by adjusting the temperature and pressure.
- Another known drying system is the belt dryer, which can also be designed as a vacuum belt dryer.
- a pressure-resistant chamber is used here, in which heating plates are stacked in several! lying layers and in several in a row! lying zones, usually four or more zones.
- the heating plates are below the upper run of endless belts, which are connected to one another drive roller and a guide roller are guided and can be driven by a motor.
- the substance to be dried is fed into the interior of the chamber by means of a metering device and distributed evenly over the belts.
- the fabric is transported in accordance with the movement of the belts from the first zone to the zones behind, the temperature conditions being set differently in each zone, so that the fabric is gradually heated and dried.
- the dried product stands freely outwards on the deflection roller of the rearmost zone and can be removed from the belt, for example by breaking it off.
- the pressure conditions for example maintaining a vacuum, in the chamber are the same for all drying zones of the belt dryer.
- the advantage of the belt dryer is that it has a larger capacity than the batch-operated drying cabinet, that it enables continuous operation and can therefore also be operated automatically with reasonable effort. In addition, the operating effort and hygiene or cleaning effort is low. It is disadvantageous, however, that not any, in particular no viscous and lumpy substances can be dried in the belt dryer, but are limited to pumpable and free-flowing substances.
- the object of the invention is to design the drying process described at the outset in such a way that it combines the advantages of both the drying cabinet and the belt dryer. This object is achieved in that the material introduced into the drying room before the drying operation is manually or mechanically applied to the drying surface and distributed there using a means of conveyance.
- a drying plant is used in which, according to the invention, the drying surface is formed by a conveyor belt which is stationary during the drying operation.
- the invention is shown schematically in the drawing in a gamewhosbei and described below. Show it:
- Fig. 1 shows a longitudinal section of the drying plant according to the invention
- FIG. 1 A variant of the drying system of FIG. 1 for drying free-flowing substances.
- the drying system shown in Figures 1 and 2 has a chamber 1 which is designed as a pressure or vacuum-proof shell. At least on one end face, the chamber 1 has a cover 2, which can be removed in the event of a bathroom and thereby enables access to the chamber 1.
- heating plates 3 are arranged one above the other, but the number of heating plates 3 can also be larger or smaller. With their arrangement in a single zone, this corresponds to the arrangement in a drying cabinet, in which stationary, superimposed drying surfaces 4 are provided, on which the material to be dried is stored in suitable holding devices, which are provided and introduced as a batch before drying and after Drying can be removed as such from the drying cabinet. It is now essential that the costly batch-wise loading and emptying of the drying cabinet, which cannot be avoided in the drying cabinet, can be simplified and also automated by the use of funding. According to the embodiments shown in FIGS. 1 and 2, these are movable belts 5 which also form the stationary drying surfaces 4.
- the belts 5 are designed as endless belts and are guided over a drive roller 6 and a deflection roller 5.
- the rollers 6, 7 are mounted in a manner not shown either in a frame supported in the chamber 1 or in the chamber wall, the drive rollers 6 being able to be driven in various ways. Either all drive rollers 6 are driven simultaneously, or only a single drive roller 6 is driven one after the other, so that the belts 5 are moved one after the other. During the drying process, however, all of the belts 5 stand still.
- the drying cabinet according to FIG. 1 for drying a pumpable substance, the same is conducted through a line 9 into the interior of the chamber 1 by a conveyor system symbolized by an arrow 8.
- This loading device can be installed permanently or can be moved to the belts by the opened dryer.
- Branches 10 go from line 9 to the individual belts 5 or successively feed the belts one after the other. Only one nozzle is used, which covers the strips one after the other.
- the belts 5 are set in motion so that the material emerging from the mouths of the branches 10 is distributed both in the width of the belts 5 and in the length of the drying surface 4. If the entire drying surface 4 is covered with the fabric, the belts 5 are stopped; the drying operation now takes place as in a drying cabinet, where the temperature and pressure curve is set according to the material to be dried.
- the loading device of the strips 5 is indicated by an arrow 11.
- the belts are set in the direction of the arrow 12 or 11, or moved in the same direction of movement as when loading the drying surface 4, the dried material being thrown off at the drive rollers 7 and through a discharge opening 13, which, depending on System is arranged on the loading or opposite side, which is for example provided with a lock 14, is discharged from the drying chamber.
- a suitable extendable discharge vessel can also be arranged within the vacuum space.
- the line 9 with the branches 10 can be raised so far and can be used to break the dried substance into pieces, so that the dried substance can be thrown off unhindered.
- a free-flowing substance is processed in the chamber 1, which is entered by a schematically represented cellular wheel 15.
- This metering device can be arranged in a fixed or mobile manner analogous to the entry device for liquid products.
- the heating plates 3 and the drying surfaces 4 formed by the belts 5 are alternately offset net. If the belts 5 move alternately in opposite directions according to the arrows 16, 17, the free-flowing material applied to the uppermost belt 5 is deposited on the beginning of the belt 5 below, from where it again reaches the beginning of the next belt 5 below etc. until the fabric reaches the end of the lowest belt 5, whereupon the belts 5 are stopped and the drying process begins on the stationary drying surfaces.
- the belts are moved in the same direction of arrow 16, 17 so that the dried substance can be discharged through the discharge opening 13 and the lock 14, for example.
- another can be used instead of the lock; e.g. extendable discharge vessel can be arranged within the vacuum space.
- the system is available for drying the next batch immediately after the material has been discharged.
- the belts in the drying chamber according to FIG. 2 are only moved until the loading of the drying surface with the material to be dried has ended or after the drying process has finished, the dried material has been discharged.
- a further advantage of the drying chamber according to FIGS. 1 and 2 is that, in addition to automatic loading by means of devices of any type, manual loading is also possible for substances which are particularly difficult to treat, for which purpose the lid 2 can be opened.
- one belt 5 after the other can be moved and loaded in the drying chamber according to FIG. 1, but all can also Belts 5 are moved and loaded at the same time.
- loading can be carried out in the same way, but in most cases the loading will be carried out with belts 5 running in opposite directions from top to bottom.
- Another line connection 20 is used to connect a vacuum generator, for example jet or water ring pumps.
- the material for the conveyor belts 5 is steel or plastic, e.g. PTFE, usable. With the drying systems described, practically all materials can be dried, as in the known drying cabinet, with the exception of very thin liquids.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
- Drying Of Solid Materials (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT83902238T ATE18796T1 (de) | 1982-08-23 | 1983-07-27 | Trocknungsanlage zum trocken eines stoffes im chargenbetrieb. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH5006/82 | 1982-08-23 | ||
CH5006/82A CH660228A5 (de) | 1982-08-23 | 1982-08-23 | Verfahren und trocknungsanlage zum trocknen eines stoffes im chargenbetrieb. |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0116565A1 true EP0116565A1 (de) | 1984-08-29 |
EP0116565B1 EP0116565B1 (de) | 1986-03-26 |
Family
ID=4286316
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83902238A Expired EP0116565B1 (de) | 1982-08-23 | 1983-07-27 | Trocknungsanlage zum trocken eines stoffes im chargenbetrieb |
Country Status (11)
Country | Link |
---|---|
US (1) | US4574495A (de) |
EP (1) | EP0116565B1 (de) |
JP (1) | JPS59501419A (de) |
AT (1) | ATE18796T1 (de) |
CA (1) | CA1226131A (de) |
CH (1) | CH660228A5 (de) |
DE (1) | DE3362690D1 (de) |
DK (1) | DK202984A (de) |
IT (1) | IT1172318B (de) |
SU (1) | SU1205785A3 (de) |
WO (1) | WO1984000805A1 (de) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DK159488A (da) * | 1988-03-23 | 1989-09-24 | Danske Sukkerfab | Fremgangsmaade til kontinuerlig toerring eller inddampning af et materiale og et apparat til udoevelse af fremgangsmaaden |
CH681042A5 (de) * | 1989-07-03 | 1992-12-31 | Bucher Guyer Ag Masch | |
JP2918641B2 (ja) * | 1990-07-09 | 1999-07-12 | 有限会社松兵衛 | 食品の成形方法及び装置 |
CH680818A5 (de) * | 1991-03-25 | 1992-11-13 | Bucher Guyer Ag Masch | |
US20080003335A1 (en) * | 2006-06-12 | 2008-01-03 | Singh Prem S | Egg product and production method |
DE102010050440A1 (de) * | 2010-11-04 | 2012-05-10 | Merk Process | Trocknungsverfahren und Trocknungsvorrichtung |
CN102226640B (zh) * | 2011-06-07 | 2012-12-26 | 上海东富龙科技股份有限公司 | 一种真空冷冻干燥机溢流自动加料装置及方法 |
CN103822461A (zh) * | 2014-03-17 | 2014-05-28 | 无锡市海昌机械设备有限公司 | 真空带式液体连续干燥机用布料系统的改进结构 |
US10272360B2 (en) | 2017-08-05 | 2019-04-30 | Priya Naturals, Inc. | Phytochemical extraction system and methods to extract phytochemicals from plants including plants of the family Cannabaceae sensu stricto |
CA3174246A1 (en) * | 2021-02-08 | 2022-08-11 | Darrell Ford | System and method for drying sludge |
Family Cites Families (17)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE67437C (de) * | Dr. B. FINKELSTEIN in Firma M. B. VOGEL in Leipzig-Lindenau, Angerstrafse 11 | Vacuumtrockenvorrichtung mit Druckausgleichung | ||
US888257A (en) * | 1906-02-16 | 1908-05-19 | Emil Passburg | Apparatus for drying in vacuum. |
US1418638A (en) * | 1918-01-30 | 1922-06-06 | William G Lyle | Apparatus for preserving food |
US2121370A (en) * | 1931-01-06 | 1938-06-21 | Wurton Machine Company | Apparatus for treating tobacco |
US2528476A (en) * | 1942-03-20 | 1950-10-31 | Thomas Lipton Inc | Method and apparatus for dehydration |
GB560899A (en) * | 1942-07-03 | 1944-04-26 | Miles Wilson Carter | A continuous vacuum dehydrating process |
US3022752A (en) * | 1960-07-23 | 1962-02-27 | Voisine Ange Emile | Baking oven |
DE1604803A1 (de) * | 1962-03-01 | 1971-01-07 | Carlo Barbareschi | Verfahren zur kontinuierlichen Absorbierung und Beseitigung von Wasserdampf oder anderen Loesungsmitteln durch Verdampfung oder Sublimation bei niedriger Temperatur unter Vakuum |
US3260866A (en) * | 1962-11-06 | 1966-07-12 | Maytag Co | Program control feature |
GB989148A (en) * | 1962-11-06 | 1965-04-14 | Paolo Bocciardo | Improvements in a method of and apparatus for drying tanned skins under vacuum in a continuous operation |
US3206866A (en) * | 1963-02-07 | 1965-09-21 | Magma Power Co | Method and apparatus for dehydrating foods employing geothermal steam |
DE1198294B (de) * | 1963-04-06 | 1965-08-05 | Leybold Hochvakuum Anlagen | Kontinuierlich arbeitende Gefriertrocknungs-kammer fuer Gueter in als ihre spaetere Verpackung dienenden Schalen |
US3448527A (en) * | 1965-09-20 | 1969-06-10 | Luis A Hernandez Jr | Quick freeze-drying system and apparatus therefor |
US3324565A (en) * | 1966-07-21 | 1967-06-13 | Hupp Corp | Apparatus and method for freeze drying |
ES472798A1 (es) * | 1977-09-02 | 1979-03-16 | Patpan Inc | Perfeccionamientos en los aparatos para el secado bajo vaciode materiales porosos en piezas delgadas |
DE3006126A1 (de) * | 1980-02-19 | 1981-09-03 | Heinz 6116 Eppertshausen Lindner | Etagentrockner |
US4409744A (en) * | 1981-06-08 | 1983-10-18 | Proctor & Schwartz, Inc. | Propeller fan drive |
-
1982
- 1982-08-23 CH CH5006/82A patent/CH660228A5/de not_active IP Right Cessation
-
1983
- 1983-07-27 JP JP83502400A patent/JPS59501419A/ja active Pending
- 1983-07-27 DE DE8383902238T patent/DE3362690D1/de not_active Expired
- 1983-07-27 EP EP83902238A patent/EP0116565B1/de not_active Expired
- 1983-07-27 AT AT83902238T patent/ATE18796T1/de active
- 1983-07-27 US US06/604,617 patent/US4574495A/en not_active Expired - Fee Related
- 1983-07-27 WO PCT/CH1983/000091 patent/WO1984000805A1/de active IP Right Grant
- 1983-08-12 IT IT48845/83A patent/IT1172318B/it active
- 1983-08-18 SU SU833634402A patent/SU1205785A3/ru active
- 1983-08-19 CA CA000435014A patent/CA1226131A/en not_active Expired
-
1984
- 1984-04-18 DK DK202984A patent/DK202984A/da not_active Application Discontinuation
Non-Patent Citations (1)
Title |
---|
See references of WO8400805A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO1984000805A1 (en) | 1984-03-01 |
IT1172318B (it) | 1987-06-18 |
US4574495A (en) | 1986-03-11 |
CH660228A5 (de) | 1987-03-31 |
DE3362690D1 (en) | 1986-04-30 |
JPS59501419A (ja) | 1984-08-09 |
DK202984D0 (da) | 1984-04-18 |
EP0116565B1 (de) | 1986-03-26 |
ATE18796T1 (de) | 1986-04-15 |
CA1226131A (en) | 1987-09-01 |
SU1205785A3 (ru) | 1986-01-15 |
IT8348845A0 (it) | 1983-08-12 |
DK202984A (da) | 1984-04-18 |
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