Global Patent Index - EP 1473533 B1

EP 1473533 B1 20150617 - Process and apparatus for continuous drying of material, especially sewage sludge.

Title (en)

Process and apparatus for continuous drying of material, especially sewage sludge.

Title (de)

Verfahren und Vorrichtung zum kontinuierlichen Trocknen von Gut, insbesondere Klärschlamm

Title (fr)

Procédé et dispositif pour sécher en continu de matériaux, notamment de boues d'épuration

Publication

EP 1473533 B1 20150617 (DE)

Application

EP 04009190 A 20040419

Priority

AT 6602003 A 20030430

Abstract (en)

[origin: EP1473533A2] To supply material onto the sieve belt (2) a distribution screw (4) is arranged over the belt. A level sensor (6) is located near the belt, and a height-adjustable calibration roller (5) is mounted over it, rotating against the belt direction. Its rotary speed exceeds the belt velocity. The distribution screw is connected to a mixer (19) for recycled mixed material, especially the dried end product, but also fresh material, especially dilute sludge. The mixer is a plug- double-shaft-, or paddle mixer. The mixer is connected to a silo extraction screw supplying granules. A drying hood covers the belt and the distribution screw. The entire dryer casing or parts of it are in concrete construction. Supply lines (7) along both sides of the dryers have openings for drying gas and are connected by adjustable tie-bars. Below the belt, a distribution system of e.g. spray pipes condense or saturate the vapors. An independent claim is included for the corresponding method.

IPC 8 full level

F26B 17/04 (2006.01); C02F 11/16 (2006.01); F26B 1/00 (2006.01); F26B 11/02 (2006.01); F26B 19/00 (2006.01); F26B 21/04 (2006.01); F26B 25/00 (2006.01)

CPC (source: EP US)

F26B 1/00 (2013.01 - EP US); F26B 17/04 (2013.01 - EP US); F26B 21/04 (2013.01 - EP US); F26B 25/002 (2013.01 - EP US); F26B 25/005 (2013.01 - EP US); F26B 2200/18 (2013.01 - EP US)

Citation (examination)

Citation (opposition)

Opponent : Sülzle Klein GmbH

  • VONPLON A.: "Klärschlamm aktuell 2", 2001, ATV-DVWK, Würzburg, article "BDS-Bandtrocknungssystem mit Rückmischung", pages: 407 - 415, XP055429538
  • THOME-KOZMEINSKY K. J.: "Klärschlammentsorgung", 1998, pages: 151-152,287,289 - 297, XP055429542
  • "Merkblatt ATV-DVWK-M 379 - Klärschlammtrocknung", ATV- DWA REGELWERK, February 2004 (2004-02-01), pages 1 - 34, XP055429544
  • BEVER, JÜRGEN: "Perspektiven der Klärschlammentsorgung", 1994, VERLAG, article "Technische Trocknung von Klärschlamm", pages: 39 - 47, XP055429547
  • KRÖLL, KARL: "Trocknungstechnik", vol. 3, 1989, article BAUER A. ET AL: "Kap. 8.8 Trocknen von Klärschlamm", pages: 467 - 477, XP055429553
  • 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
  • "W. KUNZ DRYTEC AG Engineering von industriellen Trocknungsanlagen", SWISS COMBI PROSPEKT, 2002, XP055429560
  • 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
  • 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

Opponent : Sülzle Klein GmbH,

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 1473533 A2 20041103; EP 1473533 A3 20080514; EP 1473533 B1 20150617; AT 412277 B 20041227; AT A6602003 A 20040515; ES 2545902 T3 20150916; HU E027613 T2 20161028; PL 1473533 T3 20151130; SI 1473533 T1 20150930; US 2005241173 A1 20051103; US 7028414 B2 20060418

DOCDB simple family (application)

EP 04009190 A 20040419; AT 6602003 A 20030430; ES 04009190 T 20040419; HU E04009190 A 20040419; PL 04009190 T 20040419; SI 200432256 T 20040419; US 83548904 A 20040429