EP0699868B1 - Klärschlamm- und gegebenfalls auch Hausmüll-Verbrennungsverfahren - Google Patents

Klärschlamm- und gegebenfalls auch Hausmüll-Verbrennungsverfahren Download PDF

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Publication number
EP0699868B1
EP0699868B1 EP95401878A EP95401878A EP0699868B1 EP 0699868 B1 EP0699868 B1 EP 0699868B1 EP 95401878 A EP95401878 A EP 95401878A EP 95401878 A EP95401878 A EP 95401878A EP 0699868 B1 EP0699868 B1 EP 0699868B1
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EP
European Patent Office
Prior art keywords
sludge
fumes
incineration
stage
incineration furnace
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
EP95401878A
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English (en)
French (fr)
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EP0699868A1 (de
Inventor
Marcel Lesoille
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.)
Suez International SAS
Original Assignee
Degremont SA
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Filing date
Publication date
Application filed by Degremont SA filed Critical Degremont SA
Publication of EP0699868A1 publication Critical patent/EP0699868A1/de
Application granted granted Critical
Publication of EP0699868B1 publication Critical patent/EP0699868B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/008—Incineration of waste; Incinerator constructions; Details, accessories or control therefor adapted for burning two or more kinds, e.g. liquid and solid, of waste being fed through separate inlets

Definitions

  • the present invention relates to a self-thermal incineration process sludge from urban water treatment plants and / or industrial. According to a second aspect of this invention, this process can be implemented so as to simultaneously incinerate such sludge and household waste.
  • the present invention proposes to provide a process which can be implemented. in an extremely compact installation, which allows including reducing operating and maintenance costs, and perform automation, with relatively simple means, of all the operations leading to this auto-thermal incineration of sludge, possibly simultaneously with household waste.
  • WO-A 80/1407 discloses a method for removing sludge from water of sewage consisting in introducing them into a direct heating mill in order to dry, pulverize and classify them to obtain a dried product can be used as fuel. Hot gases from the oven are used for drying.
  • WO-A 93/00562 also discloses a method for dewatering sludge originating in particular from clarification installations.
  • the sludge is subjected to a centrifugation treatment, followed by grinding and shredding treatment during which the sludge is dried.
  • the drying gas can be constituted by the exhaust gases from the combustion of sludge.
  • the present invention proposes to improve the methods specified above.
  • the invention relates to an autothermal sludge incineration process from urban and / or industrial water treatment plants with a sludge dewatering stage using the sensible heat of the fumes from the incineration oven, the dewatered sludge being introduced, under pulverulent form, in said incineration furnace characterized in that the sludge dewatering is carried out by centrifugation - simultaneous drying and in that the fumes from the simultaneous centrifugation-drying step are reintroduced into the incineration oven to destroy the incondensables and recirculate the combustion and dilution air required.
  • the dehydrated sludge is introduced, in powder form, into the incineration furnace, at the same time as household waste.
  • the fumes from the oven incineration are diluted before the centrifugation-drying step, by introduction of dilution air.
  • the fumes from the incineration oven are conditioned before recovery of their sensible heat during the centrifugation-drying stage sludge, this conditioning, carried out in a reaction, simultaneously ensuring a pre-dusting and a recrystallization of the purges from the final stage of treatment of fumes.
  • the combustion gases from the incineration oven are used to dry the liquid sludges, which are simultaneously subjected to a centrifugation to obtain a high degree of dryness (greater than 65%).
  • Dried sludge, reduced to a pulverulent state is introduced in the incineration oven at the same time as the household waste.
  • the fumes are then subjected to a treatment may be conventional.
  • the method according to the present invention makes it possible to simultaneously treat sludge and household waste, according to an unlimited weight ratio, this which is not the case with previously known methods.
  • a dilution of the fumes leaving from the incinerator 10 using an air flow which lowers the temperature of the fumes from 900 to around 200 ° C while retaining the sensible heat, the energy necessary for drying being taken from this sensible heat as already mentioned.
  • the dilution chamber 12 serves both as a pre-dust collector and purge crystallization chamber from the final treatment of flue gases, these purges being introduced at 22 into chamber 12 at coming from the processing unit 20, which allows dilution to be carried out and elimination of solid pollution.
  • the fumes which arise from the drying of the sludge in the dryer-centrifuge 16 are reintroduced into the oven of incineration 10, in order to destroy the incondensables and to recirculate the necessary combustion and dilution air while also allowing to use the sensible heat contained in these vapors, which can allow avoid preheating the combustion and / or fluidization air when the incineration oven 10 is a fluidized bed oven.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Treatment Of Sludge (AREA)
  • Processing Of Solid Wastes (AREA)
  • Gasification And Melting Of Waste (AREA)

Claims (5)

  1. Verfahren zur selbstunterhaltenden Verbrennung von Schlämmen, die aus Kläranlagen für kommunale und/oder industrielle Wässer stammen, welches eine Stufe zur Entwässerung der Schlämme, indem die fühlbare Wärme der aus einem Verbrennungsofen (10) kommenden Rauchgase genutzt wird, umfaßt, wobei die entwässerten Schlämme dem Verbrennungsofen (10) in Pulverform zugeführt werden, dadurch gekennzeichnet, daß die Entwässerung der Schlämme durch gleichzeitiges Zentrifugieren und Trocknen (16) durchgeführt wird, und daß die aus der Zentrifugier- und Trocknungsstufe stammenden Dämpfe dem Verbrennungsofen (10) zugeführt werden, um die nicht kondensierbaren Bestandteile zu zerstören und die notwendige Verbrennungs- und Verdünnungsluft in den Kreislauf zurückströmen zu lassen.
  2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die entwässerten Schlämme in Pulverform dem Verbrennungsofen zur selben Zeit wie der Hausmüll zugeführt werden.
  3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Entwässerungsstufe der Schlämme direkt in den Behandlungskreislauf (18, 20) der Rauchgase aus dem Verbrennungsofen (10) integriert ist.
  4. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die aus dem Verbrennungsofen (10) stammenden Rauchgase vor der Zentrifugier- und Trocknungsstufe durch Zufuhr von Verdünnungsluft (12) verdünnt werden.
  5. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die Rauchgase behandelt werden, bevor ihre fühlbare Wärme in der Zentrifugier- und Trocknungsstufe der Schlämme gewonnen wird, wobei die Behandlung in einer Verdünnungskammer (12) erfolgt, in welcher gleichzeitig eine Vorentstaubung und eine Auskristallisierung der abgelassenen Produkte sichergestellt wird, die aus der Endstufe (20) der Rauchgasbehandlung kommen.
EP95401878A 1994-08-29 1995-08-10 Klärschlamm- und gegebenfalls auch Hausmüll-Verbrennungsverfahren Expired - Lifetime EP0699868B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9410378 1994-08-29
FR9410378A FR2724008B1 (fr) 1994-08-29 1994-08-29 Procede d'incineration auto-thermique de boues et eventuellement en outre d'ordures menageres
NL1002006A NL1002006C2 (nl) 1994-08-29 1996-01-02 Werkwijze voor autothermische verbranding van afvalstoffen, eventueel samen met huisvuil.

Publications (2)

Publication Number Publication Date
EP0699868A1 EP0699868A1 (de) 1996-03-06
EP0699868B1 true EP0699868B1 (de) 1999-10-06

Family

ID=26231379

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95401878A Expired - Lifetime EP0699868B1 (de) 1994-08-29 1995-08-10 Klärschlamm- und gegebenfalls auch Hausmüll-Verbrennungsverfahren

Country Status (8)

Country Link
US (1) US5630366A (de)
EP (1) EP0699868B1 (de)
JP (1) JPH0875133A (de)
DE (1) DE699868T1 (de)
ES (1) ES2083351T3 (de)
FR (1) FR2724008B1 (de)
NL (1) NL1002006C2 (de)
ZA (1) ZA956933B (de)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2758100B1 (fr) * 1997-01-06 1999-02-12 Youssef Bouchalat Procede de traitement et valorisation energetique optimisee des boues de stations d'epuration urbaine et industrielle
DE19706606A1 (de) * 1997-02-20 1998-08-27 Babcock Anlagen Gmbh Verfahren zur Regelung der Temperatur in thermischen Abfallbehandlunganlagen und Abfallbehandlunganlage
CA2239984A1 (en) * 1998-06-08 1999-12-08 Presson Manufacturing Ltd. Method and apparatus for reclamation of glycol based liquids used in gas dehydration
ES2190687B1 (es) * 2000-02-03 2004-11-16 Inreco, S.L. Quemador polivalente, aplicable para todo tipo de materiales combustibles.
JP3573694B2 (ja) * 2000-07-14 2004-10-06 株式会社クボタ商会 含セルロース廃棄物の燃焼灰製造装置
US6412428B1 (en) 2000-12-20 2002-07-02 Vincent Promuto Method and apparatus for drying and incineration of sewage sludge
DE10224077B4 (de) * 2002-05-31 2005-07-07 Hans Ulrich Feustel Verfahren zur thermischen Behandlung und stofflichen Verwertung von Klärschlamm
WO2006136105A1 (fr) * 2005-06-21 2006-12-28 Institute Of Engineering Thermophysics, Chinese Academy Of Sciences Secheur combine, procede et installation d'incineration de boues humides utilisant le secheur combine
WO2007006218A1 (fr) * 2005-07-08 2007-01-18 Institute Of Engineering Thermophysics, Chinese Academy Of Sciences Séchoir, procédé et équipement destinés au séchage et à l’incinération de boues humides utilisant avec le sechoir un lit fluidisé en circulation
KR101937759B1 (ko) * 2016-10-31 2019-01-11 한국에너지기술연구원 글루존 형성을 배제하는 컴팩트 슬러지 건조 시스템

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2246224A (en) * 1937-10-27 1941-06-17 Municipal Sanitary Service Cor Disposal of garbage or garbage and sewage sludge and the like
CH485175A (de) * 1968-07-15 1970-01-31 Von Roll Ag Verfahren und Einrichtung zur gemeinsamen Verbrennung von festen Abfallstoffen, insbesondere Stadtmüll, und wässrigem Klärschlamm, insbesondere aus kommunalen Kläranlagen
DE1751751A1 (de) * 1968-07-23 1971-04-29 Ver Kesselwerke Ag Verfahren zur Vernichtung von Muell und Klaerschlamm in einer Verbrennungsanlage
DE1912648A1 (de) * 1968-11-26 1970-09-24 Ver Kesselwerke Ag Verfahren und Einrichtung zur Beseitigung von Schlaemmen
US3670669A (en) * 1970-12-16 1972-06-20 John G Hoad & Associates Process for disposal of combustible waste
US3714038A (en) * 1970-12-18 1973-01-30 Black Clawson Co Process and product for converting organic materials by pyrolysis or hydrogenation
US4213407A (en) * 1978-12-27 1980-07-22 Hooker Chemicals & Plastics Corporation Flash drying sludge derived fuel process
DE3423620A1 (de) * 1984-06-27 1986-01-02 Uhde Gmbh, 4600 Dortmund Verfahren zur thermischen behandlung von kohlenstoffhaltigen stoffen, insbesondere von schlaemmen
JPH0229372Y2 (de) * 1984-09-26 1990-08-07
DE59201791D1 (de) * 1991-06-25 1995-05-04 Baumann Schilp Lucia Verfahren und vorrichtung zum entwässern von schlämmen.

Also Published As

Publication number Publication date
EP0699868A1 (de) 1996-03-06
NL1002006A1 (nl) 1997-07-03
FR2724008B1 (fr) 1997-05-09
US5630366A (en) 1997-05-20
JPH0875133A (ja) 1996-03-19
ES2083351T3 (es) 1999-12-01
ZA956933B (en) 1996-02-25
NL1002006C2 (nl) 1997-07-03
FR2724008A1 (fr) 1996-03-01
ES2083351T1 (es) 1996-04-16
DE699868T1 (de) 1996-10-10

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