EP1473533B1 - Verfahren und Vorrichtung zum kontinuierlichen Trocknen von Gut, insbesondere Klärschlamm - Google Patents

Verfahren und Vorrichtung zum kontinuierlichen Trocknen von Gut, insbesondere Klärschlamm Download PDF

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Publication number
EP1473533B1
EP1473533B1 EP04009190.2A EP04009190A EP1473533B1 EP 1473533 B1 EP1473533 B1 EP 1473533B1 EP 04009190 A EP04009190 A EP 04009190A EP 1473533 B1 EP1473533 B1 EP 1473533B1
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EP
European Patent Office
Prior art keywords
belt
dryer
dried
distribution screw
mixer
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
EP04009190.2A
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German (de)
English (en)
French (fr)
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EP1473533A2 (de
EP1473533A3 (de
Inventor
Armin Vonplon
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Individual
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Individual
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Application filed by Individual filed Critical Individual
Priority to SI200432256T priority Critical patent/SI1473533T1/sl
Priority to PL04009190T priority patent/PL1473533T3/pl
Publication of EP1473533A2 publication Critical patent/EP1473533A2/de
Publication of EP1473533A3 publication Critical patent/EP1473533A3/de
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Publication of EP1473533B1 publication Critical patent/EP1473533B1/de
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Classifications

    • 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
    • F26B17/02—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces
    • F26B17/04—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces the belts being all horizontal or slightly inclined
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B1/00—Preliminary treatment of solid materials or objects to facilitate drying, e.g. mixing or backmixing the materials to be dried with predominantly dry solids
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
    • F26B21/02—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure
    • F26B21/04—Circulating air or gases in closed cycles, e.g. wholly within the drying enclosure partly outside the drying enclosure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/001—Handling, e.g. loading or unloading arrangements
    • F26B25/002—Handling, e.g. loading or unloading arrangements for bulk goods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
    • F26B25/005—Treatment of dryer exhaust gases
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B2200/00—Drying processes and machines for solid materials characterised by the specific requirements of the drying good
    • F26B2200/18—Sludges, e.g. sewage, waste, industrial processes, cooling towers

Definitions

  • the invention relates to a device for the continuous drying of material, in particular of sewage sludge, with a screen belt on which the material is conveyed in a belt dryer, wherein for applying the goods on the screen belt at the entrance a distribution screw above the belt, in particular wire belt is arranged. Furthermore, the invention relates to a method for drying of good, in particular sewage sludge, wherein the good is conveyed on a wire belt through a dryer.
  • Belt dryers have long been used for different applications. The disadvantage here is so far the uneven distribution of the goods on the rotating belt, whereby the material is overdried in places with too small layer thickness and not sufficiently dried at other locations with too high bulk thickness. When drying pasty and / or sticky substances, eg.
  • the sludge is distributed on the belt with a distribution screw.
  • Such an arrangement shows the document EP 0 573 885 A1 , which discloses the preamble of claim 1.
  • the aim of the invention is therefore to provide a method and a device with which a uniform distribution of the material to be dried, in particular pasty and / or sticky substances, is ensured on the wire belt of a belt dryer.
  • the invention is therefore characterized in that the distribution screw with a mixer for remixing already dried with good fresh material, in particular wet sludge, is in communication, wherein above the screen belt, a drying hood is arranged, which extends over the entire wire belt including distribution screw.
  • goods to be dried such as wood chips, biomass, cereals, rejects in paper mills, but also household waste or sewage sludge can be relatively evenly distributed over the dryer belt.
  • the air permeability of these pasty and / or sticky substances can be adjusted and it is favored the uniform distribution on the wire belt.
  • An advantageous development of the invention is characterized in that a calibrating roller is arranged above the sieve belt, wherein the calibrating roller can be made height-adjustable. If, in addition, a level sensor is arranged in the area of the distribution screw, an even more uniform distribution for the drying is achieved.
  • the calibrating roller rotates counter to the conveying direction of the screen belt, wherein the rotational speed can be greater than the belt speed.
  • the too large amount of material to be dried is conveyed back into the area of the distribution screw, thus achieving even more even distribution.
  • the mixer is connected to a discharge device for backmixed material of a backmixed silo and the backmixing silo has a discharge device, in particular discharge screw, for the accept, for example granules
  • a particularly cost-effective and operationally safe system can be set up, in which the discharge quantity of the accept, e.g. Granules regulates automatically.
  • a particularly cost-effective variant of a dryer can be realized if the dryer has feed lines which extend along the two sides of the dryer and have openings for the discharge of drying gas.
  • the drying hood can be made in a very lightweight construction and adjusted for optimal sealing against the frame of the dryer.
  • the invention also relates to a process for drying material, in particular sewage sludge, wherein the material is conveyed through a dryer on a sieve belt. It is characterized in that the material is supplied via a distribution screw, wherein the air permeability of the material to be dried is achieved by mixing the fresh product with a partial stream of the already dried end product. Furthermore, it is advantageous if the level is changed by changing the belt speed, with an increase in the level in the distribution screw accelerates the screen belt or at a decrease in the level in the distribution screw, the belt speed can be reduced until the level reaches the set value again Has.
  • the material to be dried which consists of fresh material, in particular wet sludge, and remixed material, in particular granules, and the back-mixed material are quantity-controlled withdrawn from a storage container, in particular back-mixed silo is, wherein the excess dried material, in particular granules, can be deducted as accepts from the reservoir.
  • a storage container in particular back-mixed silo is, wherein the excess dried material, in particular granules, can be deducted as accepts from the reservoir.
  • Fig. 1 a schematic diagram of a belt dryer according to the invention
  • Fig. 2 a diagram of a belt drying plant according to the invention
  • Fig. 3 a longitudinal view
  • Fig. 4 show a transverse view of a dryer according to the invention.
  • FIG. 2 illustrates a diagram of a dryer 1 with a screen belt 2, in which a material 3 to be dried is applied to the screen belt 2 via a distribution screw and subsequently blended through a calibrating roller 5.
  • the screen belt can consist of plastic or metal fabric.
  • a level sensor 6 is arranged, which controls the belt speed, with an increase in the level in the distribution screw, the belt, in particular wire belt accelerates or at a decrease in the level in the distribution screw, the belt speed is reduced until the level again has reached the setpoint.
  • the drying is carried out by means of circulating air line 7 supplied hot air, the example here in a heat exchanger 8 by means of waste heat recovery eg by steam, flue gas or hot water is warmed up.
  • the air can also be heated directly or indirectly by a burner.
  • the coupled out of the air circuit laden with moisture air (vapors) is partially withdrawn via line 9, a condenser / saturator 10 and optionally a biofilter 11 supplied before the exhaust air 12 is discharged to the environment.
  • cooling air 13 Before the dried material 14 exits the dryer, it is advantageously still cooled by cooling air 13. This cooling air can be sucked in by a possibly existing in the dryer vacuum from the environment respectively as exhaust air from the peripheral components.
  • FIG. 1 the same parts are given the same reference numerals as in FIG Fig. 1 ,
  • the heating in the heat exchanger 8 is carried out by the flue gases of a burner 15.
  • the dried material for example granules, is fed by means of a screw conveyor 14 'and a conveying element 14 "to a back-mixing silo 16, from where the accept or final product 17 is discharged. Wet sludge from a storage container 20.
  • the mixer can, as shown here consist of a delivery zone 19 'and an actual mixing zone 19 "and leads the mixed Good 3 of the distribution screw 6 to.
  • the product discharge of the dried product from the dryer 1 takes place in the silo 16.
  • the excess end product is discharged via a discharge screw 21 arranged in the upper region of the silo 16 and then different process steps, such as stacking in the silo, packaging in big bags, incineration or the like. fed.
  • This arrangement represents a particularly cost-effective and reliable variant, since the discharge rate is controlled automatically. The more dried material is produced, the more good will be delivered. If less good, then nothing will be as long discharged until the level of the discharge screw 21 is reached again. This also ensures that there is always enough material for backmixing.
  • Fig. 3 shows a longitudinal view of the dryer 1 in the background of the mixer 19 and the silos 16 and 20 can be seen.
  • Fig. 4 is a transverse view of a dryer 1 according to the invention to see. Here you can also see the Nassgutsilo 20 and the mixer 19 and the air supply line 7, including heat exchanger 8 and burner 15. Furthermore, the dryer hood 23 can be seen above the belt 2 in this view.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
  • Treatment Of Sludge (AREA)
EP04009190.2A 2003-04-30 2004-04-19 Verfahren und Vorrichtung zum kontinuierlichen Trocknen von Gut, insbesondere Klärschlamm Expired - Lifetime EP1473533B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
SI200432256T SI1473533T1 (sl) 2003-04-30 2004-04-19 Postopek in aparat za kontinuirano sušenje materiala, še posebej kanalizacijskega blata
PL04009190T PL1473533T3 (pl) 2003-04-30 2004-04-19 Sposób i urządzenie do ciągłego osuszania materiału, zwłaszcza osadu ze ścieków

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0066003A AT412277B (de) 2003-04-30 2003-04-30 Verfahren und vorrichtung zum kontinuierlichen trocknen von gut, insbesondere klärschlamm
AT6602003 2003-04-30

Publications (3)

Publication Number Publication Date
EP1473533A2 EP1473533A2 (de) 2004-11-03
EP1473533A3 EP1473533A3 (de) 2008-05-14
EP1473533B1 true EP1473533B1 (de) 2015-06-17

Family

ID=32234886

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04009190.2A Expired - Lifetime EP1473533B1 (de) 2003-04-30 2004-04-19 Verfahren und Vorrichtung zum kontinuierlichen Trocknen von Gut, insbesondere Klärschlamm

Country Status (7)

Country Link
US (1) US7028414B2 (pl)
EP (1) EP1473533B1 (pl)
AT (1) AT412277B (pl)
ES (1) ES2545902T3 (pl)
HU (1) HUE027613T2 (pl)
PL (1) PL1473533T3 (pl)
SI (1) SI1473533T1 (pl)

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US20100196199A1 (en) * 2007-03-01 2010-08-05 Andritz Separation Inc. System and method for treatment of pathogens in dried sewage sludge
US8888962B2 (en) * 2008-04-10 2014-11-18 The Crucible Group Pty Ltd Processing organic materials
US9708540B2 (en) 2008-04-10 2017-07-18 The Crucible Group Pty Ltd Processing organic materials
JP2012504488A (ja) * 2008-10-02 2012-02-23 グリフォン エンヴィロンメンタル，エルエルシー 懸濁液液体抜き取り装置および方法
FR2954814B1 (fr) * 2009-12-30 2012-03-02 Degremont Procede et installation de sechage de matieres pateuses, en particulier de boues de stations d'epuration, avec generation d'energie thermique.
DE102011004788A1 (de) * 2011-02-25 2012-08-30 Huber Se Anlage und Verfahren zum Trocknen von Feuchtgut
DE102012207884B4 (de) 2012-05-11 2014-04-24 Easy Dry Systems AG Vorrichtung zum Trocknen von Gut
EP3093598B1 (en) * 2014-01-10 2021-02-03 Tsukishima Kikai Co., Ltd. Equipment for solid-liquid separation and drying of fine-powder slurry, and method therefor
FI126241B (en) * 2014-02-28 2016-08-31 Evac Oy Marine ship waste treatment equipment and method for waste treatment in marine ship waste treatment equipment
US10337795B2 (en) * 2014-07-17 2019-07-02 Officine Facco & C. S.P.A. Drying machine for pasty and/or granular substances and spacer for rollers of conveyor belts for such drying machine
DE102014013078B4 (de) * 2014-09-09 2016-12-29 Biotherm Services Gmbh Verfahren und Vorrichtung zur Behandlung von phosphorhaltigem Klärschlamm
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CN105688750A (zh) * 2016-01-19 2016-06-22 浙江丽水有邦新材料有限公司 一种防腐的回转凝固造粒机
CA2959851A1 (en) * 2016-03-03 2017-09-03 Recover Energy Services Inc. Gas tight shale shaker for enhanced drilling fluid recovery and drilled solids washing
CN111296868A (zh) * 2018-12-12 2020-06-19 石柱土家族自治县卓远农业开发有限公司 新鲜黄花菜多级烘干机
CN113531537A (zh) * 2020-04-20 2021-10-22 宋钰婷 一种具有烟气水洗净化功能的空气环保式废物焚烧装置
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GB1013632A (en) * 1963-08-09 1965-12-15 Friedrich Haas Gmbh Maschf Belt dryer
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EP0573885A1 (de) 1992-06-09 1993-12-15 Lindauer Dornier Gesellschaft M.B.H Durchström-Trockner zur Trocknung von Schlämmen mit Filteranordnung
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DE9307012U1 (de) 1993-05-08 1993-07-15 Gebr. Bellmer GmbH & Co. KG, 7532 Niefern-Öschelbronn Vorrichtung zur Verteilung von Schlamm
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JPH1059534A (ja) * 1996-08-14 1998-03-03 Nippon Shokubai Co Ltd 粘着性粉粒状物群用ならし装置

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CLEMENS M. MARB ET AL: "Schadstoffverhalten bei der Klärschlammtrocknung: Ergebnisse der Untersuchungen an einem Kaltluftttrockner", KORRESPONDENZ ABWASSER, vol. 44, no. 8, 1997, Augsburg, pages 1386 - 1393, XP055429581
DR. TOMALLA, MANFRED: "Kalt- und Umlufttrocknung", ATV DVKW, 2001, Würzburg, pages 1 - 15, XP055429160
DR. TOMALLA, MANFRED: "Klärschlammtrocknung am Beispiel der Kalt- und Umlufttrocknung", UMWELTPRAXIS, vol. 12, no. 1, December 2001 (2001-12-01), pages 16 - 18, XP008023285
KRÖLL, KARL: "Trocknungstechnik", vol. 3, 1989, article BAUER A. ET AL: "Kap. 8.8 Trocknen von Klärschlamm", pages: 467 - 477, XP055429553
THOME-KOZMEINSKY K. J.: "Klärschlammentsorgung", 1998, pages: 151-152,287,289 - 297, XP055429542
VONPLON A.: "Klärschlamm aktuell 2", 2001, ATV-DVWK, Würzburg, article "BDS-Bandtrocknungssystem mit Rückmischung", pages: 407 - 415, XP055429538
VORTRAG DR. TOMALLA, MANFRED: "Sludge Drying - How can it be safe and economic?", 8TH EUROPEAN BIOSOFIDS AND ORGANIC RESIDUALS CONVERENCE AND EXHIBITION, 23 November 2003 (2003-11-23), pages 1 - 24, XP055429574

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EP1473533A2 (de) 2004-11-03
ATA6602003A (de) 2004-05-15
HUE027613T2 (en) 2016-10-28
SI1473533T1 (sl) 2015-09-30
US7028414B2 (en) 2006-04-18
ES2545902T3 (es) 2015-09-16
EP1473533A3 (de) 2008-05-14
US20050241173A1 (en) 2005-11-03
AT412277B (de) 2004-12-27
PL1473533T3 (pl) 2015-11-30

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