EP0521221B1 - Sécheur à disque rotatif - Google Patents

Sécheur à disque rotatif Download PDF

Info

Publication number
EP0521221B1
EP0521221B1 EP19910401727 EP91401727A EP0521221B1 EP 0521221 B1 EP0521221 B1 EP 0521221B1 EP 19910401727 EP19910401727 EP 19910401727 EP 91401727 A EP91401727 A EP 91401727A EP 0521221 B1 EP0521221 B1 EP 0521221B1
Authority
EP
European Patent Office
Prior art keywords
slurry
hollow
steam
rotary disc
drum
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.)
Expired - Lifetime
Application number
EP19910401727
Other languages
German (de)
English (en)
Other versions
EP0521221A1 (fr
Inventor
Jinichi Nishimura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to EP19910401727 priority Critical patent/EP0521221B1/fr
Priority to DE1991608389 priority patent/DE69108389T2/de
Publication of EP0521221A1 publication Critical patent/EP0521221A1/fr
Application granted granted Critical
Publication of EP0521221B1 publication Critical patent/EP0521221B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28F—DETAILS OF HEAT-EXCHANGE AND HEAT-TRANSFER APPARATUS, OF GENERAL APPLICATION
    • F28F19/00—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers
    • F28F19/008—Preventing the formation of deposits or corrosion, e.g. by using filters or scrapers by using scrapers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/28—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rollers or discs with material passing over or between them, e.g. suction drum, sieve, the axis of rotation being in fixed position
    • F26B17/282—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rollers or discs with material passing over or between them, e.g. suction drum, sieve, the axis of rotation being in fixed position the materials adhering to, and being dried on, the surface of rotating discs with or without scraping devices

Definitions

  • the present invention relates to a rotary disc-type dryer comprising the features as defined in the preamble of claim 1.
  • a drye is, for example, disclosed in US-A-4 640 345 (Fig. 12 and Fig. 13 of the patented specification) which is substantially constructed as follows.
  • the dryer comprises a) a hollow drum through which a heating medium such as steam can be circulated, b) means rotatably mounting the hollow drum within an outer casing, inlet means for introducing fluid into said outer casing, c) an outlet means for discharging the fluid after being heated from the outer casing, d) a plurality of hollow and disc-like projections mounted on the outer peripheral surface of the hollow drum, e) first partition means dividing the interior of the hollow drum into supply and discharge passages, f) a supply port for each projection at said peripheral wall of the hollow drum communicating with the supply passage and a discharge port for each projection at the peripheral wall of the hollow drum communicating with the discharge passage, whereby the heating medium supply and discharge passages each communicate with the interior of hollow portions of the projections, g) second partition means within each of the hollow disc-like projections between a supply port and a discharge port thereof for directing fluid around the interior of the projection from the supply port to the discharge port, and h) scraper means for scraping off the dried solid material
  • the heating medium can smoothly circulate within the hollow drum as well as the projections and can provide a heat exchange with heated or heating medium within the outer casing and the slurry-like material on the surface of the projections can be effectively dried and the dried material is scraped off from the surface of the projections.
  • the above dryer however, has following drawbacks. Namely, the steam which is used as the heating medium is converted to the drain water as a result of the heat exchange between the steam and the slurry-like material to be dried which adhere to the both surfaces of the projections.
  • the drain water accumulates in the inner space defined in the respective projections and considerably deteriorates the heat exchanging efficiency between the steam and the slurry-like material.
  • the second partition means is made of a single flat straight plate which radially extends toward the outer casing, it takes a considerable time for expelling the drain water from the inner space of the respective partitions to the discharge passage.
  • the drying operation with the conventional dryer is less than optimal in view of the drying efficiency.
  • the present invention discloses rotary disc-type dryer which comprises a) a hollow drum through which steam can be circulated, b) means rotatably mounting the hollow drum within an outer casing, c) a plurality of hollow rotary discs mounted on the outer peripheral surface of the hollow drum, d) first partition means dividing the interior of the hollow drum into a steam injection chamber and a steam discharging chamber, e) a steam injection aperture for each hollow rotary disc at the peripheral wall of the hollow drum communicating with the steam injection chamber and a steam discharging aperture for each hollow rotary disc at the peripheral wall of the hollow drum communicating with the steam discharging chamber, whereby the steam injection and discharging chamber each communicate with the inner space of the hollow rotary discs, f) second partition means within each of the hollow rotary discs between the steam injection aperture and the steam discharging aperture thereof for directing steam from the steam injection aperture to steam discharging aperture, g) spray means for spraying slurry-like material onto both surfaces of said hollow rotary discs, and
  • Figure 1 is a front elevational view of the drying system incorporating the rotary disc-type dryer of the present invention.
  • Figure 2 is a side elevational view of the above drying system.
  • Figure 3 is a longitudinal cross-sectional view of the dryer.
  • Figure 4 is a transverse sectional view of the dryer taken on line I-I in Fig. 3.
  • Figure 5 is a partially-broken-away front view of the thickness leveller.
  • Figure 6 is a cross-sectional view of the thickness leveller taken on line II-II of Figure 5.
  • Figure 7 is a schematic view of the scraper.
  • Figure 8 is a cross-sectional view of the scraper.
  • Figure 8a is a cross-sectional view of the modification of the scraper.
  • Figure 8b is a plan view of the scraper.
  • Figure 8c is a plan view of the scraper blade.
  • Figure 9 is a schematic view of the peripheral scraper.
  • Figure 10 is a front enlarged view of the peripheral scraper.
  • Figure 11 is an explanatory view showing the manner of transferring drain water from the inner space of the hollow rotary drum to the steam discharging chamber.
  • a rotary disc-type dryer A comprises a casing 10 in which a hollow drum 30 which is provided with a plurality of rotary discs 11 on the outer surface thereof is rotatably disposed in the casing 10.
  • the rotary discs 11 are charged with heating medium such as steam by way of the hollow drum 30.
  • a spray pipe 12 is disposed in the casing 10 for spraying slurry-like material onto the surface of the rotary discs 11.
  • the rotary disc-type dryer A is also provided with a thickness leveller F for levelling the thickness of the slurry-like material sprayed onto the surface of the rotary discs 11, a scraper G for scraping off the dried material from the rotary discs 11 and a peripheral scraper H for scraping off the slurry-like material on the periphery of the rotary discs 11.
  • a slurry collecting tank B is disposed right below the casing 10 for collecting slurry-like material fallen from the surface of the rotary discs 11.
  • a slurry circulation line C connects the slurry collecting tank B with the spray pipe 12 and the line C is provided with a pump 13 for feeding the slurry-like material to the spray pipe 12 from the slurry collecting tank B under pressure.
  • a slurry storage tank D for storing the material to be dried in a slurry form is disposed adjacent to the dryer A and a main slurry supply line E connects the slurry storage tank D with the slurry collecting tank B.
  • the material to be dried may be any kind of liquid including industrial waste or residue from various plants such as food processing plant, mining plant, steel refining plant, pharmaceutical plant, porcelain or ceramics manufacturing plant.
  • the main slurry supply line E is provided with a pump 14 for feeding the slurry-like material into the slurry collecting tank B from the slurry storage tank D.
  • the casing 10 of the rotary disc-type dryer A is mounted on a frame structure 20 which includes a plurality of vertical struts 21a.
  • the casing 10 is provided with an upper door 10a and a lower door 10b which enable the access to the inside of the casing 10 at the time of maintenance.
  • the casing 10 is also provided with a duct 10c which communicates the inside of the casing 10 with a dust collector 10d mounted on the floor.
  • the hollow drum 30 of the rotary disc-type dryer A has both end journaling portions 21,22 thereof connected with a steam supply pipe 23 and a steam drain pipe 24 respectively by way of rotary joints 25,26.
  • the steam drain pipe 24 is provided with a steam trap 24a for discharging drain water while preventing the discharge of steam.
  • a material collecting hopper 27 is attached to the bottom portion of the casing 10 and the slurry collecting tank B is disposed right below the material collecting hopper 27.
  • the rotary disc-type dryer A is also provided with a power-operated motor 36 mounted on the frame structure 20 and a sprocket wheel 37 mounted on the output shaft of the motor 36 is connected with a sprocket wheel 38 mounted on the journaling portion 21 of the hollow drum 30.
  • the hollow drum 30 is concentrically and rotatably disposed in the casing 10.
  • a plurality of hollow rotary discs 11 are concentrically mounted on the hollow drum 30 while these discs 11 are axially spaced apart from each other.
  • a partition wall 31 is disposed in the hollow drum 30 axially in a slanted manner dividing the inner space of the hollow drum 30 into a steam injection chamber S1 and a steam discharging chamber S2.
  • the steam injection chamber S1 is communicated with the inner space S of the hollow rotary discs 11 by way of a plurality of steam injection apertures 32 formed in the wall of the hollow drum 30, while the steam discharging chamber S2 is communicated with the inner space S of the hollow rotary discs 11 by way of a plurality of steam discharging apertures 33 formed in the wall of the hollow drum 30.
  • the hollow drum 30 is provided with a steam injection opening 34 and a steam discharging opening 35 on the respective ends thereof, wherein the steam injection opening 34 is communicated with the steam injection chamber S1 and the steam discharging opening 35 is communicated with the steam discharging space S2.
  • the steam injection opening 34 and steam discharging opening 35 are formed in the journaling portions 21, 22 of the hollow drum 30.
  • the steam which enters the steam injection chamber S1 by way of the steam supply pipe 23 is fed into the inner space S of the rotary discs 11 through the steam injection apertures 32. Then the steam enters the steam discharging chamber S2 through the steam discharging apertures 33 from the inner space S of the rotary discs 11. Finally the steam is discharged into the steam drain pipe 24.
  • the disc surface 11a of the rotary discs 11 is heated at a temperature of 100 °C to 150°C to dry the slurry-like material on the surface of the rotary discs 11.
  • a partition plate 40 is provided between the inner surface of the hollow rotary drum 30 and the outer surface of the rotary disc 11 and such partition plate 40 defines an acute angle ⁇ in a drum rotating direction between the radially inner portion 40a thereof and an extension of a line L which connects the center O of the hollow drum 30 and the radially inner proximal end 40b of the partition plate 40 which abuts to the outer surface of the hollow rotary drum 30.
  • the steam discharging aperture 33 is formed in the hollow rotary drum 30 at a position where the inner proximal end 40b of the partition plate 40 merges to the U-shaped partition wall 31.
  • the partition plate 40 scoops the drain water accumulated in the bottom portion of the rotary disc 11 and subsequently makes the drain water J smoothly enter into the steam discharging chamber S2 through the steam discharging aperture 33.
  • the drain water accumulates at the corner defined by the inner surface of the casing 10 and the outermost end of the partition plate 40 so that the rotary disc 11 has to rotate a considerable angle to complete the transfer of the drain water from the inner space S to the steam discharging chamber S2 and accordingly the efficiency of the heat trasfer from the rotary disc 11 to the material to be dried is deteriorated.
  • the slurry collecting tank B is provided with a float switch or a level sensor 10e which transmits an operating signal to the power-operated motor of the pump 14 for stopping or starting the operation of the pump 14 so as to maintain the level of the slurry-like material in the slurry collecting tank B constantly at a suitable level range.
  • the sprayer or the spray pipe 12 is hereinafter explained in details. As shown in Fig. 1, the spray pipe 12 is parallelly disposed at the lower portion of the hollow drum 30.
  • the spray pipe 12 is capable of spraying any kind of material in either slurry or liquid form onto the disc surfaces 11a of the discs 11. While the rotary discs 11 are being rotated, the material sprayed on the disc surfaces 11a is dried by the heat of the steam which passes through the rotary discs 11.
  • Fig. 7 the construction of the scraper G is disclosed, wherein the scraper G is disposed at the lower portion of the casing 10 which is opposed to the place where the spray pipe 12 is mounted.
  • the scraper blade 45 is biasingly made come into contact with the disc surface 11a and the scraper blade 45 has the bottom portion thereof fixedly fastened to a supprot fitting 46 by means of bolts 47.
  • the support fitting 46 is, in turn, pivotally mounted on a mounting plate 48 by way of a pivot 47a.
  • Numeral 51 indicates a support plate which is symmetrically mounted on the mounting plate 48 relative to the support fitting 46 by means of bolts 52.
  • a compression fitting 53 made of a leaf spring bridges between the scraper blade 45 and the support plate 51.
  • the central portion of the compression fitting 53 is connected with the mounting plate 48 by means of a contact pressure adjustment bolt 54.
  • a modification of the scraper G is disclosed, wherein the scraper blade 45 is provided with a plurality of parallelly-spaced apart slits 45a along the front periphery thereof thus forming a plurality of independently swingable blade sections 45b.
  • the thickness leveller F is explained hereinafter in view of Fig. 5 and Fig. 6.
  • Numeral 63 indicates a pair of contact rollers which sandwitch the rotary disc 11 for uniformly compressing the material sprayed on both disc surfaces 11a,11a of the rotary disc 11.
  • the contact roller 63 has the front extremity thereof tapered while the proximal end thereof rotatably journaled by in a bearing box 64 by means of bearings 65.
  • Numeral 66 indicates a pulley
  • numeral 67 indicates a steel-made connecting plate which adjustably connects the bearing box 64 to a bracket 67a fixedly mounted on the frame structure 20.
  • Numeral 68 indicates a drive pulley while numeral 69 indicates a power transmission belt and numeral 70 indicates a power-operated motor.
  • the length of the contact rollers 63,63 is approximately equal to the diameter of the rotary disc 11 and is directed to the center of the rotary disc 11 from the outer periphery of the rotary disc 11.
  • the contact rollers 63,63 can efficiently expel air or bubbles from the slurry-like material so that the decrease of the heat exchanging efficiency caused by such bubbles can be eliminated effectively.
  • the peripheral scraper H is explained in view of Fig. 9 and Fig. 10.
  • the peripheral scraper H comprises a pair of scraper plates 80,81 which are partially overlapped each other forming a scraper groove 85 in which the peripheral surface 11b of the rotary disc 11 comes into contact.
  • the width of the scraper groove 85 is adjustable by means of the elongated apertures 82,83 and bolts 84.
  • the slurry-like material is continuously fed into the slurry collecting tank B by way of the main slurry supply line E.
  • the material to be dried is continuously or at the time of need fed to the spray pipe 12 and is sprayed onto the disc surfaces 11a of the rotary discs 11.
  • the material sprayed onto the peripheral surface of the rotary discs 11 is scraped off from the rotary discs by means of the peripheral scrapers H.
  • the thickness of the material is being levelled by the thickness leveller F so as to facilitate the succeeding drying operation of the material as mentioned above.
  • the material Until the material arrives at a position where the scraper G is disposed, the material is completely dried by the heat exchange between the surface of the rotary discs 11 and the material.
  • each rotary disc 11 Since the inner space of each rotary disc 11 is provided with the partition plate 40 which defines the acute angle ⁇ in a drum rotating direction between the radially inner portion 40a thereof and the extension line L, the drain water produced as the result of the heat exchange can be scooped with the partition plate 40 and subsequently is smoothly expelled from the inner space of the rotary disc 11 to the steam discharging chamber S2 along with the rotation of the rotary disc 30 with a small rotating angle. Then the dried material is scraped off from the disc surfaces 11a of the discs 11 and collected through the discharge chute.
  • the slurry like material which falls in the slurry collecting tank B during the slurry spraying operation is collected in the ink B and then is fed to the spray pipe 12.
  • the drying operation can be carried out continuously increasing the yield of the drying operation considerably while achieving high heat exchanging efficiency.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Drying Of Solid Materials (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)

Claims (5)

  1. Sécheur rotatif à disques comprenant :
    (a) un tambour creux (30) dans lequel onpeut faire circuler de la vapeur d'eau,
    (b) des moyens de montage en rotation du tambour creux dans un caisson extérieur (10),
    (c) une pluralité de disques rotatifs creux (11) fixés sur la surface périphérique extérieure du tambour creux,
    (d) une première cloison (31) divisant l'intérieur du tambour creux en une chambre d'injection de vapeur (S1) et une chambre d'évacuation de vapeur (S2),
    (e) un trou d'injection de vapeur (32) pour chaque disque rotatif creux, ménagé dans la paroi périphérique du tambour creux et en communication avec la chambre d'injection de vapeur (S1), et un trou d'évacuation de vapeur (33) pour chaque disque rotatif creux, ménagé dans la paroi périphérique du tambour creux et en communication avec la chambre d'évacuation de vapeur (S2), de sorte que la chambre d'injection de vapeur et la chambre d'évacuation de vapeur communiquent toutes deux avec l'espace intérieur (S) des disques rotatifs creux,
    (f) une deuxième cloison (40) prévue dans chacun des disques rotatifs creux, entre ses trous d'injection de vapeur et d'évacuation de vapeur, pour diriger la vapeur du trou d' injection de vapeur au trou d'évacuation de vapeur,
    (g) des moyens de pulvérisation (12) pour pulvériser une matière boueuse sur les deux surfaces desdits disques rotatifs creux, et
    (h) des moyens de raclage pour racler et enlever la matière solide séchée de la surface des disques rotatifs creux respectifs,
    le sécheur étant caractérisé en ce que :
       la deuxième cloison (40) est constituée d'une plaque qui s'étend entre le tambour creux et la surface extérieure du disque rotatif, et
       ladite plaque définit un angle, dans le sens de rotation du tambour, entre sa partie radialement intérieure (40a) et un prolongement d'une ligne (L) reliant le centre (O) du tambour creux (30) et l'extrémité proximale radialement intérieure (40b) de la plaque (40) qui est fixée en contact avec la surface extérieure du tambour rotatif creux (30).
  2. Sécheur rotatif à disques suivant la revendication 1, dans lequel ledit sécheur rotatif à disques comprend un dispositif d'égalisation d'épaisseur (F) qui comporte deux rouleaux de contact en forme de tige (63) qui serrent entre eux chaque disque rotatif creux (11), lesdits rouleaux de contact étant fonctionnellement reliés à des moyens de mise en rotation des rouleaux (64-68).
  3. Sécheur rotatif à disques suivant la revendication 1, dans lequel lesdits moyens de raclage (G) comprennent une lame de raclage (45)dont l'extrémité proximale ou de base est montée de façon pivotante sur une pièce fixe (48) et dont l'extrémité distale ou libre vient en contact avec la surface de disque (lla) desdits disques rotatifs creux, et des moyens de sollicitation qui appliquent une force de compression vers ladite surface de disque.
  4. Sécheur rotatif à disques suivant la revendication 1, dans lequel lesdits moyens de raclage comprennent un dispositif de raclage périphérique (H) qui comporte deux plaques de raclage (80,81) qui se chevauchent partiellement de manière à définir une gorge de raclage (85) à l'intérieur de laquelle la surface périphérique (11b) du disque rotatif creux (11) vient en contact avec le dispositif de raclage périphérique.
  5. Sécheur rotatif à disques suivant la revendication 1, dans lequel ledit sécheur comprend en outre :
    (a) une cuve de stockage de boue (D) pour stocker une matière à sécher, sous forme de boue,
    (b) une cuve de collecte de boue (B) placée au-dessous dudit caisson,
    (c) une tuyauterie principale d'amenée de boue (E) qui relie ladite cuve de stockage de boue (D) à ladite cuve de collecte de boue (B),
    (d) une tuyauterie de circulation de boue (C) qui relie ladite cuve de collecte de boue (B) audit tube de pulvérisation (12)
    (e) des moyens de pompage (14) montés sur ladite tuyauterie principale de boue (E) pour amener ladite matière boueuse à ladite cuve de collecte de boue (B), et
    (f) des moyens de pompage (13) montés sur ladite tuyauterie de circulation de boue (C) qui relie ladite cuve de collecte de boue (B) audit tube de pulvérisation de boue (12).
EP19910401727 1991-06-26 1991-06-26 Sécheur à disque rotatif Expired - Lifetime EP0521221B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP19910401727 EP0521221B1 (fr) 1991-06-26 1991-06-26 Sécheur à disque rotatif
DE1991608389 DE69108389T2 (de) 1991-06-26 1991-06-26 Drehscheibentrockner.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP19910401727 EP0521221B1 (fr) 1991-06-26 1991-06-26 Sécheur à disque rotatif

Publications (2)

Publication Number Publication Date
EP0521221A1 EP0521221A1 (fr) 1993-01-07
EP0521221B1 true EP0521221B1 (fr) 1995-03-22

Family

ID=8208587

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910401727 Expired - Lifetime EP0521221B1 (fr) 1991-06-26 1991-06-26 Sécheur à disque rotatif

Country Status (2)

Country Link
EP (1) EP0521221B1 (fr)
DE (1) DE69108389T2 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020200663A1 (fr) 2019-04-05 2020-10-08 Allgaier Werke Gmbh Dispositif, système et procédé de séchage industriel d'une suspension ou solution

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6121719B2 (ja) * 2013-01-07 2017-04-26 水ｉｎｇ株式会社 汚泥乾燥装置
CN107314663A (zh) * 2017-07-14 2017-11-03 望江县金峰矿产品科技有限公司 一种石英砂干燥除尘装置
CN108679964A (zh) * 2018-05-02 2018-10-19 朱增伟 一种滚筒烘干机
CN111023739A (zh) * 2019-12-12 2020-04-17 段抒颖 一种盘式干燥机
CN112209464B (zh) * 2020-12-09 2021-04-13 苏州湛清环保科技有限公司 圆盘刮板干燥装置
CN116753717B (zh) * 2023-08-17 2023-10-20 常州江河干燥设备有限公司 一种干燥系统及干燥方法

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE310353C (fr) *
GB239087A (en) * 1924-12-01 1925-09-03 John Melrose Arnot Method of and apparatus for draining water or other liquid from revolving cylinders or drums
GB278882A (en) * 1926-10-12 1927-10-20 Ernest Albert Leather Improvements in means for removing liquid from the interior of rotating cylinders ordrums
DE1604929A1 (de) * 1966-07-19 1971-01-14 Werner Hackenberg Nasskantenabstreifer fuer Walzentrockner
NO122742B (fr) * 1970-05-16 1971-08-02 Stord Bartz Industri As
IT1023907B (it) * 1973-11-15 1978-05-30 Feldmuehle Anlagen Prod Procedimento e dispositivo per l e strazione dell aoqua da tamburi rotanti r.scaldati a vapore,in partioolare dai cilindri essiccatori nelle macchine per la fabbricazione della carta
DE2807725C2 (de) * 1978-02-23 1985-09-12 Raimund 5000 Köln Sossna Vakuumtrockner, insbesondere zur Vortrocknung von Substanzen mit einem im Vergleich zur Flüssigkeit geringen Feststoffgehalt
DE3043166A1 (de) * 1980-11-15 1982-09-09 Adalbert Klein, Apparatebau, 5905 Freudenberg Vakuumtrockner
US4640345A (en) * 1984-10-10 1987-02-03 Jinichi Nishimura Rotating heat exchanger

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020200663A1 (fr) 2019-04-05 2020-10-08 Allgaier Werke Gmbh Dispositif, système et procédé de séchage industriel d'une suspension ou solution
DE102019002528B4 (de) 2019-04-05 2021-12-16 Allgaier Werke Gmbh Vorrichtung, Vorrichtungspaket, System und Verfahren zur industriellen Trocknung einer Suspension oder Lösung

Also Published As

Publication number Publication date
DE69108389D1 (de) 1995-04-27
EP0521221A1 (fr) 1993-01-07
DE69108389T2 (de) 1995-11-09

Similar Documents

Publication Publication Date Title
NZ193193A (en) Treating wet solids in rotating"zig-zag"chamber
EP0521221B1 (fr) Sécheur à disque rotatif
PL139217B1 (en) Apparatus for drying solid materials
US4615801A (en) Rotary filtration means in the filth condensation-dehydration apparatus
US6061924A (en) Batch sludge dehydrator
CN215952066U (zh) 一种新型螺带耙式干燥机
EP0880386B1 (fr) Ensemble rotatif de transmission de chaleur servant a effectuer l'evaporation de liquides ou le sechage de produits pouvant etre pompes
JP3196172B2 (ja) スクリュ−撹拌式汚泥乾燥機
CN216953881U (zh) 一种有机肥料干燥装置
EP1236015B1 (fr) Deshydrateur de boues a fonctionnement discontinu
CN112209464B (zh) 圆盘刮板干燥装置
KR950000740B1 (ko) 회전원반형 건조기
US4755291A (en) Filtration and washing apparatus with adjustable rotary filtration cylinder
KR100372897B1 (ko) 건조장치
CN211915659U (zh) 一种钢结构施工钢材裁断装置
JPS6219326B2 (fr)
JP3903281B2 (ja) 液体原料の付着防止機能を具えた真空乾燥機
CN220567251U (zh) 一种卧式圆盘干燥机
US980444A (en) Vacuum drying apparatus.
JP3606511B2 (ja) 横型回転式乾燥機
CN117606207B (zh) 蒸发干燥机
JP3333293B2 (ja) コール・イン・チューブドライヤ
CN217101773U (zh) 高效智能污泥净化处理生产线
CN219199820U (zh) 一种立式盘式连续干燥机
JP2004012015A (ja) 液体原料の凍結機構を具えた真空乾燥機

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE FR GB IT NL SE

17P Request for examination filed

Effective date: 19930705

17Q First examination report despatched

Effective date: 19940211

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT NL SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT

Effective date: 19950322

K1C3 Correction of patent application (complete document) published

Effective date: 19930107

REF Corresponds to:

Ref document number: 69108389

Country of ref document: DE

Date of ref document: 19950427

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Effective date: 19950622

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20020617

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20020626

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20020628

Year of fee payment: 12

Ref country code: NL

Payment date: 20020628

Year of fee payment: 12

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20030626

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040101

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040101

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20030626

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20040227

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20040101

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST