EP0571722A2 - Procédé et schéma d'installation pour sécher et brûler des matières résiduaires - Google Patents

Procédé et schéma d'installation pour sécher et brûler des matières résiduaires Download PDF

Info

Publication number
EP0571722A2
EP0571722A2 EP93103730A EP93103730A EP0571722A2 EP 0571722 A2 EP0571722 A2 EP 0571722A2 EP 93103730 A EP93103730 A EP 93103730A EP 93103730 A EP93103730 A EP 93103730A EP 0571722 A2 EP0571722 A2 EP 0571722A2
Authority
EP
European Patent Office
Prior art keywords
waste materials
rotary tube
drying
circuit according
line
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
Application number
EP93103730A
Other languages
German (de)
English (en)
Other versions
EP0571722B1 (fr
EP0571722A3 (en
Inventor
Bernd Dr. Rer. Nat. Dahm
Jürgen Frölich
Eckart Dipl.-Ing. Neubert
Reinhard Dr.-Ing. Assmus
Klaus-Dieter Dipl.-Ing. Schmeer
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.)
HUMBOLDT WEDAG ZAB GmbH
Original Assignee
HUMBOLDT WEDAG ZAB 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 HUMBOLDT WEDAG ZAB GmbH filed Critical HUMBOLDT WEDAG ZAB GmbH
Publication of EP0571722A2 publication Critical patent/EP0571722A2/fr
Publication of EP0571722A3 publication Critical patent/EP0571722A3/de
Application granted granted Critical
Publication of EP0571722B1 publication Critical patent/EP0571722B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/44—Details; Accessories
    • F23G5/46—Recuperation of heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/02—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment
    • F23G5/04—Incineration of waste; Incinerator constructions; Details, accessories or control therefor with pretreatment drying
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
    • F23G7/001—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2202/00—Combustion
    • F23G2202/40—Combustion in a pulsed combustion chamber

Definitions

  • the invention relates to a method and the associated technical circuit for drying and burning waste materials, in particular sewage sludge, the waste materials being burned after mechanical and thermal drainage
  • Landfilling will be more difficult for the future for two reasons. Firstly, the creation of sufficient landfill space is becoming increasingly problematic and secondly, the deposition of organic substances is being increasingly restricted after the introduction of TA municipal waste.
  • the disadvantage here is that sometimes long travel distances are required for the sewage sludge to be able to use it in a cement plant.
  • the Hg and Cl contents of the sewage sludge determine the application limits for the addition of the sewage sludge as a secondary fuel in the cement production process.
  • the object of the invention is to provide a method and the associated technical circuit for drying and incineration of waste materials, in particular of sludge, with which complete combustion of the organic pollutants and odors is achieved economically and without additional pollution of the environment with a high availability of the plant.
  • waste materials in particular sewage sludge
  • mechanical dewatering and thermal drying are ground by hot circulating air and then pulsedly burned in a pulsation reactor, the waste materials simultaneously serving as part of the fuel requirement for the pulsating combustion.
  • thermally dried waste with a grain size ⁇ 1mm is returned to the process after mechanical dewatering in order to process it there with the dewatered nasal sludge to form a homogeneous, free-flowing material.
  • the circulating air for the thermal drying of the free-flowing material is heated by indirect heat exchange with the exhaust gases of the pulsating combustion and fed to a rotary tube dryer.
  • the technical circuit for drying and burning waste materials consists of a rotary tube dryer for the thermal drying of the material, which has already been mechanically dewatered and made free-flowing a processing plant and a coarse separator, a filter and a condenser are connected downstream.
  • the processing plant consists of a grinding plant known per se for grinding the thermally dried waste materials.
  • a portion of the thermally dried waste with a grain size ⁇ 1 mm is separated off by means of a sieving machine or a sifter and fed via a material line to the double-shaft mixer upstream of the rotary tube dryer as a return material.
  • the thermally dried waste material which is ground in a ball mill or spring roller mill, is fed into the downstream pulsation reactor for combustion via an intermediate silo.
  • the hot exhaust gases which are generated in the waste combustion in the pulsation reactor, are fed via a line to a recuperator, into which the recirculating air line from the condenser also flows.
  • the circulating air from the condenser which is indirectly heated in the recuperator, is fed back into the rotary tube dryer via a pipeline.
  • the advantage of the solution according to the invention is that the simple and robust construction of a drying system with an indirectly heated rotary tube dryer achieves high availability and economy of the system.
  • the system engineering Circuit achieved a continuous operation without continuous operation of the system.
  • the economy of the process and the system is also achieved by the fact that the sensible heat of the hot exhaust gases generated during the combustion of the waste materials can be used by indirect heat exchange with the circulating air of the dryer circuit.
  • some or all of the fuel required for the combustion of the waste materials is supplied by the waste materials themselves, so that the waste materials are also burned economically.
  • Another advantage of the invention is the ventilation separation of the dryer circuit from the heating circuit for the combustion of the waste materials.
  • the vapors loaded with water vapor are separated in a coarse separator 10 and a filter 11 from the thermally dried material entrained in the circulating air.
  • the cleaned broths are cooled in a downstream condenser 12. They give up the majority of their water load.
  • the draining condensate is returned to the sewage treatment plant.
  • the material separated in the coarse separator 10 is fed via a material line to the material coming from the rotary tube dryer 8.
  • the thermally dried sewage sludge is separated into one or more grain fractions in a screening machine 9 connected downstream of the rotary tube dryer on the material side.
  • the screened grain fraction ⁇ 1 mm is fed to the twin-shaft mixer 7 together with the material separated in the filter 11 as a return material.
  • the coarser fraction> 1 mm obtained in the screening machine 9 is fed to a storage silo 1.
  • the processed material is fed via an intermediate silo 3 for combustion to a pulsation reactor 4, the dried sewage sludge simultaneously replacing part of the fuel required for drying.
  • the organic pollutants and odors are completely combusted in the pulsation reactor 4.
  • the ash is removed from the system and the hot flue gases are fed to a recuperator 5.
  • the hot flue gas emits its sensible heat by indirect heat exchange to the dryer air coming from the condenser 12.
  • the heated dryer air is again the rotary tube dryer 8 and the cooled flue gases from the pulsating combustion are fed to an exhaust gas cleaning system 6.
  • FIG. 2 shows a variant of the circuit according to the invention for drying and burning the sludge.
  • the main difference compared to variant 1 is that the grinding of the thermally dried Klaerschlammes takes place in a spring roller mill 13 instead of the agitator ball mill 2.
  • the sludge thermally dried in the rotary tube dryer 8 is fed in via a material line of a spring roller mill 13 for grinding.
  • the ground sludge sludge passes into a circulating air classifier 15 via a bucket elevator 14, the semolina separated in the circulating air classifier 15 being fed to a conveyor 16.
  • a quantity of partial material is fed back into the twin-shaft mixer 7 as return material, while the other part of the spring roller mill 13 is fed again.
  • the material separated in the coarse separator 10 and in the filter 11 reaches the bucket elevator 14 and / or the intermediate silo 3 downstream of the air classifier 15 via a common material line.
  • the processed material from the intermediate silo 3, as described in variant 1, is fed to a pulsation reactor 4 for combustion, the hot flue gases of the pulsation reactor 4 also being used for indirect heat exchange with the circulating air from the dryer.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Processing Of Solid Wastes (AREA)
  • Treatment Of Sludge (AREA)
  • Fertilizers (AREA)
EP93103730A 1992-05-29 1993-03-09 Procédé et schéma d'installation pour sécher et brûler des matières résiduaires Expired - Lifetime EP0571722B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4217729 1992-05-29
DE4217729A DE4217729A1 (de) 1992-05-29 1992-05-29 Verfahren und anlagentechnische Schaltung zur Trocknung und Verbrennung von Abfallstoffen

Publications (3)

Publication Number Publication Date
EP0571722A2 true EP0571722A2 (fr) 1993-12-01
EP0571722A3 EP0571722A3 (en) 1994-02-23
EP0571722B1 EP0571722B1 (fr) 1996-05-15

Family

ID=6459956

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93103730A Expired - Lifetime EP0571722B1 (fr) 1992-05-29 1993-03-09 Procédé et schéma d'installation pour sécher et brûler des matières résiduaires

Country Status (3)

Country Link
EP (1) EP0571722B1 (fr)
AT (1) ATE138177T1 (fr)
DE (2) DE4217729A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1035274C2 (nl) * 2008-04-09 2009-10-12 Internationaal Projectbureau H Werkwijze alsmede inrichting voor het verwerken van organisch materiaal omvattend slib.
CN105399304A (zh) * 2015-12-25 2016-03-16 柳建国 生物污泥干化和焚烧循环处理方法及其成套设备
WO2021018838A1 (fr) * 2019-07-31 2021-02-04 5-Haven Holding GmbH Procédé et dispositif pour l'utilisation de déchets organiques

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4431564A1 (de) * 1994-07-13 1996-01-18 Kloeckner Humboldt Deutz Ag Verfahren und anlagentechnische Schaltung zur Trocknung und Verbrennung von Klärschlamm
EP0692679A3 (fr) 1994-07-13 1997-01-02 Kloeckner Humboldt Deutz Ag Procédé et schéma d'installation pour le séchage et l'incinération de boues d'égout
DE102009010118B4 (de) * 2009-02-24 2011-03-31 Michael Kaden Verfahren zur selbstgängigen Verbrennung von Klärschlamm
CN102633420A (zh) * 2012-05-09 2012-08-15 江苏中容环保有限公司 具有多孔介质蓄热及均料预热干燥功能的污泥热解装置
CN110242968A (zh) * 2019-06-21 2019-09-17 南通欣源污泥处置科技有限公司 一种焚烧及烟气处理用干化污泥下料装置

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2148447A (en) * 1933-08-26 1939-02-28 William A Dundas Method of and apparatus for disposing of sewage waste
DE1207896B (de) * 1961-05-17 1965-12-23 Kohlenscheidungs Ges Mit Besch Verfahren zum Verbrennen von eingedicktem Klaerschlamm sowie Trocknungs- und Verbrennungsanlage hierfuer
SU361983A1 (ru) * 1970-06-02 1972-12-13 Способ сжигания осадков сточных вод
CH540858A (de) * 1972-07-31 1973-08-31 Von Roll Ag Verfahren zum Trocknen und anschliessenden Verbrennen von Schlamm sowie Anlage zur Ausführung des Verfahrens
US3954069A (en) * 1975-03-10 1976-05-04 Myrens Verksted A/S Process and apparatus for the incineration of aqueous sewage sludge
CH641133A5 (de) * 1979-05-28 1984-02-15 Escher Wyss Ag Verfahren zum verarbeiten von klaerschlamm.
DE3429055A1 (de) * 1984-08-07 1986-02-20 Heiner Dipl.-Ing. 4030 Ratingen Kreyenberg Verfahren zur beseitigung von schlaemmen, insbesondere klaer- und faulschlaemmen
DE3542004A1 (de) * 1985-11-28 1987-06-04 Kloeckner Humboldt Deutz Ag Trocknung und verbrennung von schlaemmen beim brennprozess mineralischer stoffe
DE3839861A1 (de) * 1988-11-25 1990-05-31 Rudi Pedersen Heizanlage
DE3915082C1 (fr) * 1989-05-09 1990-09-27 Deutsche Babcock Anlagen Ag, 4200 Oberhausen, De
US4926764A (en) * 1989-08-17 1990-05-22 Den Broek Jos Van Sewage sludge treatment system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL1035274C2 (nl) * 2008-04-09 2009-10-12 Internationaal Projectbureau H Werkwijze alsmede inrichting voor het verwerken van organisch materiaal omvattend slib.
CN105399304A (zh) * 2015-12-25 2016-03-16 柳建国 生物污泥干化和焚烧循环处理方法及其成套设备
CN105399304B (zh) * 2015-12-25 2017-12-01 柳建国 生物污泥干化和焚烧循环处理方法及其成套设备
WO2021018838A1 (fr) * 2019-07-31 2021-02-04 5-Haven Holding GmbH Procédé et dispositif pour l'utilisation de déchets organiques

Also Published As

Publication number Publication date
ATE138177T1 (de) 1996-06-15
DE4217729A1 (de) 1993-12-02
EP0571722B1 (fr) 1996-05-15
DE59302568D1 (de) 1996-06-20
EP0571722A3 (en) 1994-02-23

Similar Documents

Publication Publication Date Title
EP0343431B1 (fr) Procédé et dispositif pour sécher des bones d'eaux d'égout
EP0358006B1 (fr) Procédé et dispositif pour purifier des gaz d'échappement d'un sécheur
EP0379657B1 (fr) Procédé de séchage de boues
EP0423400B1 (fr) Dispositif d'évacuation de déchets
DE3542004A1 (de) Trocknung und verbrennung von schlaemmen beim brennprozess mineralischer stoffe
EP0465479B1 (fr) Procede de transformation de boues de curage
EP0716264B1 (fr) Procédé et installation pour la combustion des boues
EP0372039A1 (fr) Procede et dispositif de traitement de scories de fours d'incineration de dechets.
DE19531379C1 (de) Verfahren zur Verbrennung von Klärschlamm und Anlage zur Durchführung des Verfahrens
EP0571722A2 (fr) Procédé et schéma d'installation pour sécher et brûler des matières résiduaires
WO1989011912A1 (fr) Procede et installation pour l'epuration des scories d'un four d'incineration de dechets
DE3429055A1 (de) Verfahren zur beseitigung von schlaemmen, insbesondere klaer- und faulschlaemmen
EP0692679A2 (fr) Procédé et schéma d'installation pour le séchage et l'incinération de boues d'égout
DE29918945U1 (de) Mobile Entwässerungsvorrichtung
DE2535683A1 (de) Verfahren und vorrichtung zur verbrennung von schlaemmen mit hilfe rekuperativer schlammtrocknung
DE19501736C1 (de) Verfahren zur Verbrennung von Klärschlamm und Anlage zur Durchführung des Verfahrens
DE4431564A1 (de) Verfahren und anlagentechnische Schaltung zur Trocknung und Verbrennung von Klärschlamm
EP1378494B1 (fr) Procédé et installation pour traiter des résidus d'origine biologique, en particulier des boues
DE19956562A1 (de) Verfahren zur Reinigung einer Wärmetauscherfläche und Feststoffblasmedium zur Durchführung des Verfahrens
EP0526458B1 (fr) Procede et installation pour l'utilisation de boues de curage
AT411254B (de) Verfahren und vorrichtung zur verarbeitung biogener reststoffe, insbesondere von schlämmen
AT406509B (de) Verfahren und anlage zur trocknung von schlamm, insbesondere klärschlamm
DE1207896B (de) Verfahren zum Verbrennen von eingedicktem Klaerschlamm sowie Trocknungs- und Verbrennungsanlage hierfuer
DE3535721A1 (de) Vorrichtung zur herstellung von alkaliarmem zementklinker
DE19906061A1 (de) Vorrichtung zur schadstoffarmen Verbrennung nichtfossiler Brennstoffe

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: A2

Designated state(s): AT CH DE DK FR LI NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT CH DE DK FR LI NL SE

17P Request for examination filed

Effective date: 19940310

17Q First examination report despatched

Effective date: 19950313

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: HUMBOLDT WEDAG ZAB GMBH

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT CH DE DK FR LI NL SE

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

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 19960515

Ref country code: DK

Effective date: 19960515

REF Corresponds to:

Ref document number: 138177

Country of ref document: AT

Date of ref document: 19960615

Kind code of ref document: T

REF Corresponds to:

Ref document number: 59302568

Country of ref document: DE

Date of ref document: 19960620

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: 19960815

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Ref country code: LI

Effective date: 19970331

Ref country code: CH

Effective date: 19970331

26N No opposition filed
REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: DE

Payment date: 19980223

Year of fee payment: 6

Ref country code: AT

Payment date: 19980223

Year of fee payment: 6

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

Ref country code: FR

Payment date: 19980226

Year of fee payment: 6

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

Ref country code: AT

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

Effective date: 19990309

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: 19991130

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

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: 20000101