DK0458221T3 - Process for drying sewage sludge - Google Patents

Process for drying sewage sludge

Info

Publication number
DK0458221T3
DK0458221T3 DK91108066.1T DK91108066T DK0458221T3 DK 0458221 T3 DK0458221 T3 DK 0458221T3 DK 91108066 T DK91108066 T DK 91108066T DK 0458221 T3 DK0458221 T3 DK 0458221T3
Authority
DK
Denmark
Prior art keywords
vessel
sludge
drying
drying air
supplied
Prior art date
Application number
DK91108066.1T
Other languages
Danish (da)
Inventor
Herbert Greeb
Original Assignee
Weiss Bio Anlagen Gmbh
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 Weiss Bio Anlagen Gmbh filed Critical Weiss Bio Anlagen Gmbh
Application granted granted Critical
Publication of DK0458221T3 publication Critical patent/DK0458221T3/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/001—Heating arrangements using waste heat
    • F26B23/002—Heating arrangements using waste heat recovered from dryer exhaust gases
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
    • C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
    • 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
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/12—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft
    • F26B17/14—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Sustainable Development (AREA)
  • Treatment Of Sludge (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

Process and apparatus are described for drying sludge, in which process the sludge in a vessel (1) is conducted from top to bottom by means of a loading device (2, 6, 8) and by means of a discharge device (3, 11) in the form of a sludge column with stable layers and is dried in the course of this in countercurrent by means of drying air entering at the bottom of the vessel through a ventilating base (16) furnished with orifices and leaving from the top of the vessel. The heat contained in latent and sensible form in the drying air conducted away from the vessel is transferred via a heat exchanger (13) to the drying air supplied from outside, so that the heat liberated during the drying on account of the remaining putrefaction process is sufficient to maintain the sludge in the vessel at elevated temperature. Part of the dried sludge removed from the bottom of the vessel (1) is mixed with the externally (2) supplied sludge by means of a mixing device (7), in order to adjust the initial consistency and moisture content. According to a particular embodiment of the invention, a second vessel of essentially the same type is provided, to the bottom of which can be supplied drying air withdrawn from the top of the first container and mixed as required with drying air directly supplied from the surroundings. The sludge to be dried can be initially fed to the first or the second of the two vessels and there subjected to a predrying and then transferred from the bottom of this to the top of the other vessel in each case and there subjected to a final drying. <IMAGE>
DK91108066.1T 1990-05-18 1991-05-17 Process for drying sewage sludge DK0458221T3 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE4016100A DE4016100A1 (en) 1990-05-18 1990-05-18 METHOD AND DEVICE FOR DRYING CLEANING SLUDGE

Publications (1)

Publication Number Publication Date
DK0458221T3 true DK0458221T3 (en) 1994-12-05

Family

ID=6406760

Family Applications (1)

Application Number Title Priority Date Filing Date
DK91108066.1T DK0458221T3 (en) 1990-05-18 1991-05-17 Process for drying sewage sludge

Country Status (5)

Country Link
EP (1) EP0458221B1 (en)
AT (1) ATE109755T1 (en)
DE (2) DE4016100A1 (en)
DK (1) DK0458221T3 (en)
ES (1) ES2061112T3 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2694550B1 (en) * 1992-08-04 1994-09-30 Roumens Didier Installation for drying and stabilizing sludge and process implemented by said installation.
DE4235422C2 (en) * 1992-10-21 1997-01-23 Dornier Gmbh Lindauer Process for drying pasty material, in particular sewage sludge, preferably in pellet form, and device for carrying out the process
DE4242747C2 (en) * 1992-12-17 1997-07-17 Steag Ag Process and plant for treating sludge
FR2705442B1 (en) * 1993-05-13 1995-07-21 Calmon Olivier Continuous drying device for products divided in bulk.
DE9307515U1 (en) * 1993-05-18 1993-09-02 Eibach Oberflaechentechnik Gmb Device for reducing the moisture content of sludge
ES2071593B1 (en) * 1993-12-16 1996-01-16 Univ Cantabria PURIFICATION SYSTEM OF RESIDUAL WATERS AND MUDS PRODUCED THROUGH REMOVABLE BIOFILM PROCESSES.
DE19739864A1 (en) * 1997-09-11 1999-03-18 Dornier Gmbh Lindauer Process for treating the exhaust air from thermal drying processes, in particular from processes during the drying of sewage sludge in sewage sludge dryers and plant for carrying out the process
ATE287204T1 (en) 2000-04-26 2004-07-15 Kraus Karl METHOD AND DEVICE FOR DRYING MOISTURE
DE10336514A1 (en) * 2003-08-08 2005-02-24 Föckersperger, Walter Drying dewatered sludge for mobile dewatering and drying systems involves passing sludge from drying device to heap in storage location, passing drying gas from drying device over wide area of heap
DE102004036081B4 (en) * 2004-07-24 2007-12-27 Cakir, Ugur, Dipl.-Ing. New drying concept (drying plant) for sewage sludge
FR2873680B1 (en) * 2004-07-30 2007-11-02 Amenagement Urbain & Rural PROCESS FOR COMBINED DRYING OF WASTE, IN PARTICULAR SLUDGE OF PURIFICATION STATIONS
SI2284468T1 (en) * 2009-08-07 2018-08-31 Walter Sailer Method for drying offcuts
DE102009051224B4 (en) * 2009-10-29 2017-11-09 Jürgen Martin Process for drying material, in particular sewage sludge, drying device and biogas plant
DE102010017097A1 (en) * 2010-05-26 2011-12-01 Entsorgungstechnik Kraus Martin E.K. Drying plant for biomass and / or sludge and method for this purpose
DE102011055190A1 (en) * 2011-11-09 2013-05-16 Fabian Rypacek thickener

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB835216A (en) * 1955-03-07 1960-05-18 Dorr Oliver Inc Improvements in or relating to the drying of sewage sludge
US3805715A (en) * 1972-10-26 1974-04-23 Atomic Energy Commission Method for drying sludge and incinerating odor bodies
GB2089667B (en) * 1980-12-19 1985-04-17 Atomic Energy Authority Uk Improvements in or relating to separation
EP0293976B1 (en) * 1987-06-05 1994-08-10 Geelen Techniek B.V. Device for cooling and/or drying bulk goods

Also Published As

Publication number Publication date
EP0458221B1 (en) 1994-08-10
EP0458221A1 (en) 1991-11-27
ATE109755T1 (en) 1994-08-15
DE59102467D1 (en) 1994-09-15
DE4016100A1 (en) 1991-11-21
ES2061112T3 (en) 1994-12-01

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