EP1066486B1 - Method of incinerating waste material, and incinerator for carrying out the method - Google Patents

Method of incinerating waste material, and incinerator for carrying out the method Download PDF

Info

Publication number
EP1066486B1
EP1066486B1 EP98914835A EP98914835A EP1066486B1 EP 1066486 B1 EP1066486 B1 EP 1066486B1 EP 98914835 A EP98914835 A EP 98914835A EP 98914835 A EP98914835 A EP 98914835A EP 1066486 B1 EP1066486 B1 EP 1066486B1
Authority
EP
European Patent Office
Prior art keywords
combustion zone
combustion
fluidized
furnace
grate
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
EP98914835A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1066486A1 (en
Inventor
Joergen Vitus Nielsen
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.)
Babcock and Wilcox Volund AS
Original Assignee
Babcock and Wilcox Volund AS
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 Babcock and Wilcox Volund AS filed Critical Babcock and Wilcox Volund AS
Publication of EP1066486A1 publication Critical patent/EP1066486A1/en
Application granted granted Critical
Publication of EP1066486B1 publication Critical patent/EP1066486B1/en
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
    • F23G5/08—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating
    • F23G5/14—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion
    • F23G5/16—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having supplementary heating including secondary combustion in a separate combustion chamber
    • 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
    • F23G5/20—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having rotating or oscillating drums
    • 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
    • F23G5/30—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having a fluidised bed
    • 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

Definitions

  • the present invention relates to an incinerator, said incinerator being of the kind set forth in the preamble of claim 1, and a method of incinerating waste material, said method being of the kind set forth in the preamble of claim 7.
  • the first combustion zone is used to carry out an amount of incineration work per unit time below and up to a maximum determined by its capacity
  • the second zone is used to deal with peak loads beyond the capacity of the first zone
  • rotary kilns are rather costly and require considerable space as well as means to support them for rotation, and cannot quickly be adjusted to adapt to changes in the load, i.e. the amount per unit time and nature of the material to be treated after the initial processing in the first combustion zone.
  • An ash-burning vibratory conveyor is probably considerably less costly and more adaptable than a rotary kiln, but - like the latter - it suffers from the disadvantage of having moving mechanical parts subjected to high temperatures.
  • the European patent specification No. 280,091 discloses a method of incinerating waste material, said method being of the kind comprising the following steps:
  • the fluidizing gas may be used as a vehicle for effecting adjustments of the combustion process taking place in the second combustion zone. It is e.g. possible to vary the intensity of combustion by varying the volume per unit time of the fluidizing gas and /or its composition by varying the percentage of e.g. oxygen, carbon dioxide or nitrogen.
  • Another advantage of a fluidized-bed furnace is that - at least in principle - it comprises no moving parts with the exception of the particles of the fluidized bed itself, and it can also be constructed at a relatively low cost as compared to a vibratory ash-burning conveyor and - not least - a rotary kiln.
  • the present invention also relates to a method of incinerating waste material.
  • This method is of the kind set forth in the preamble of claim 7, and according to the invention it also comprises the features set forth in the characterizing clause of this claim 7.
  • the incinerator shown in Figures 1 and 2 comprises the following well-known components:
  • the boiler 4 and the flue-gas cleaner 5 are shown in "block-diagram" form, as they can be constructed in any suitable manner, known or unknown, to fulfil their functions.
  • the problem referred to above is solved by, in addition to the first combustion zone represented by the space above the grate 3, providing a second combustion zone.
  • previous incinerators have comprised rotary kilns or ash-burning vibratory conveyors as active parts of the second combustion zone.
  • the active component of this second zone is constituted by a fluidized-bed furnace 6, preferably of the type comprising a body of sand or similar refractory particulate material constantly agitated by suitable means (not shown), such as jets of gas that may be heated or combustible to produce heat within the furnace 6.
  • the sand in the fluidized-bed furnace 6 is not only being constantly agitated by fluidizing gas, that may be air, through a plenum 17 and the perforated bottom of the furnace 6, but is also preferably kept in constant circulation by e.g. a lifting conveyor 18, partly through the fluidized bed itself, partly through a separator 7 having an outlet 8 for ashes and/or slag, the sand being returned to the bed.
  • fluidizing gas that may be air
  • a lifting conveyor 18 partly through the fluidized bed itself, partly through a separator 7 having an outlet 8 for ashes and/or slag, the sand being returned to the bed.
  • the sand in the fluidized bed itself moves in an upstream direction, i.e. towards the place, where material from the grate 3 falls onto the bed.
  • the grate droppings are conveyed in a downstream direction to the fluidized-bed furnace 6 by means of a conveyor, in the exemplary embodiment shown as a worm conveyor 10, but other types of conveyors could, of course, be used, such as grate-belt conveyors, scraper conveyors, of the dry or wet type, or simply an inclined chute or skid.
  • a conveyor in the exemplary embodiment shown as a worm conveyor 10, but other types of conveyors could, of course, be used, such as grate-belt conveyors, scraper conveyors, of the dry or wet type, or simply an inclined chute or skid.
  • the incinerator shown in Figure 1 comprises a number of auxiliary inlets, i.e.
  • the first, second and third auxiliary inlets 11, 12 and 13, respectively, are mainly intended for the introduction of sludge, such as sewage sludge, into the incinerator.
  • sludge such as sewage sludge
  • Which of these three auxiliary inlets to choose for this purpose will in each case depend on the operating conditions, such as the quality and quantity of the "normal" waste material being introduced to the inlet chute, as well as on the quality, such as combustibility and water content, and quantity of the sludge to be incinerated. If, for instance, the temperature on the grate 3 is very high, the heat present here can be exploited to evaporate water from sludge being introduced through the second auxiliary inlet 12, at the same time lowering the temperature to an acceptable operating level. The same applies to the third auxiliary inlet 13 in relation to the fluidized-bed furnace 6.
  • the second auxiliary inlet 12 may be used for introducing waste material that for some reason or other is considered unsuitable for feeding through the chute 1.
  • waste material could comprise waste material from hospitals etc., as well as sludge of various types.
  • the exemplary embodiment shown in Figure 3 uses a rotary kiln 14 as the active part of the first combustion zone.
  • a rotary kiln 14 instead of the furnace chamber 2 of Figure 1 with the grate 3 and the space 9 with the conveyor 10 makes these latter components superfluous, and an auxiliary inlet corresponding to the second auxiliary inlet 12 is simply not possible.
  • the exemplary embodiment of Figure 3 corresponds to that of Figure 1, and its way of functioning should need no further explanation.
  • this problem can be avoided by providing the flue-gas cleaner 5 with an exhaust fan 15 adapted to keep the pressure in the spaces upstream of it below atmospheric.
  • the cleaner 5 also comprises an outlet 16 for dust separated from the flue gas.
  • the first and second combustion systems in combination can be fed with a full variety of municipal and industrial waste types, e.g. completely filled waste bags, solid waste of similar bulk size, shredded waste, sludges, hospital waste, waste oil and bio-fuels, and at the same time it can be ensured that the slag and/or ashes discharged from the incinerator after combustion will have a content of unbumt matter typically below 0.5%.
  • Municipal and industrial waste types e.g. completely filled waste bags, solid waste of similar bulk size, shredded waste, sludges, hospital waste, waste oil and bio-fuels

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Gasification And Melting Of Waste (AREA)
  • Fluidized-Bed Combustion And Resonant Combustion (AREA)
  • Processing Of Solid Wastes (AREA)
  • Fertilizers (AREA)
  • Incineration Of Waste (AREA)
EP98914835A 1998-03-23 1998-03-23 Method of incinerating waste material, and incinerator for carrying out the method Expired - Lifetime EP1066486B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/DK1998/000112 WO1999049265A1 (en) 1998-03-23 1998-03-23 Method of incinerating waste material, and incinerator for carrying out the method

Publications (2)

Publication Number Publication Date
EP1066486A1 EP1066486A1 (en) 2001-01-10
EP1066486B1 true EP1066486B1 (en) 2002-06-26

Family

ID=8156461

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98914835A Expired - Lifetime EP1066486B1 (en) 1998-03-23 1998-03-23 Method of incinerating waste material, and incinerator for carrying out the method

Country Status (6)

Country Link
EP (1) EP1066486B1 (da)
AT (1) ATE219829T1 (da)
AU (1) AU6918098A (da)
DE (1) DE69806273T2 (da)
DK (1) DK1066486T3 (da)
WO (1) WO1999049265A1 (da)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT410287B (de) * 2001-05-25 2003-03-25 Tribovent Verfahrensentwicklg Einrichtung zum pyrometallurgischen aufarbeiten von abfallstoffen
RU2481528C2 (ru) * 2011-02-10 2013-05-10 Общество с ограниченной ответственностью "Научно-технический центр Альтернативная энергетика" (ООО "НТЦ АЭ") Высокотемпературная установка для термической переработки твердых медицинских отходов

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63194115A (ja) * 1987-02-04 1988-08-11 Ishikawajima Harima Heavy Ind Co Ltd 焼却炉

Also Published As

Publication number Publication date
WO1999049265A1 (en) 1999-09-30
AU6918098A (en) 1999-10-18
EP1066486A1 (en) 2001-01-10
DE69806273T2 (de) 2003-02-06
ATE219829T1 (de) 2002-07-15
DE69806273D1 (de) 2002-08-01
DK1066486T3 (da) 2002-10-14

Similar Documents

Publication Publication Date Title
US6216610B1 (en) Process and device for incineration of particulate solids
AU2002231125B2 (en) Method and apparatus for drying and incineration of sewage sludge
JPS5911545B2 (ja) ポルトランドセメント製造及び廃棄物の利用
US4546711A (en) Apparatus and method for incinerating waste material with a converted preheater-type lime kiln
US3877397A (en) Incinerators
EP1066486B1 (en) Method of incinerating waste material, and incinerator for carrying out the method
KR20020085480A (ko) 하수슬러지처리기
US5154128A (en) Process for salvaging waste and device for preparing said waste
US6302038B1 (en) Anti-erosion system of grate in stoker-type incinerator
KR100775568B1 (ko) 슬러지의 건조 장치 및 셀 제조 방법
CN215951433U (zh) 一种用于焚烧工业固废的两段式逆流回转窑
JP4432047B2 (ja) 塵芥と汚泥とを合わせて処理する廃棄物処理炉および廃棄物処理装置
WO2000031470A1 (fr) Procede et dispositif d'incineration de dechets
JP2991638B2 (ja) 廃棄物焼却装置
JP3372526B2 (ja) 廃棄物の処理方法及びその装置
CA1263566A (en) Apparatus and method for incinerating waste material with a converted preheater-type lime kiln
JPH11223318A (ja) トンネル窯型ゴミ焼却炉
JP3759200B2 (ja) 廃棄物の熱分解・溶融方法およびその装置
JP2602612B2 (ja) 廃棄物粉粒体の流動床式焼却方法
KR100361175B1 (ko) 유동층에 의한 축산폐기물 소각 방법
JP3891754B2 (ja) 廃プラスチック類の微粉細燃焼を利用したごみ焼却灰の熔融システム
JPH0631343B2 (ja) 流動層式熱分解方法
JP4378528B2 (ja) 流動床炉及びその焼却方法。
JPH04350409A (ja) 循環流動床型焼却炉
JP2002106819A (ja) 循環流動層燃焼装置及びその燃焼方法

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

17P Request for examination filed

Effective date: 20001023

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FI FR GB IE IT LI NL PT SE

17Q First examination report despatched

Effective date: 20010323

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

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

Owner name: BABCOCK & WILCOX VOLUND APS

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

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 BE CH DE DK ES FI FR GB IE IT LI NL PT 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: 20020626

Ref country code: LI

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: 20020626

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.

Effective date: 20020626

Ref country code: FI

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: 20020626

Ref country code: CH

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: 20020626

Ref country code: BE

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: 20020626

Ref country code: AT

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: 20020626

REF Corresponds to:

Ref document number: 219829

Country of ref document: AT

Date of ref document: 20020715

Kind code of ref document: T

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

RIN1 Information on inventor provided before grant (corrected)

Inventor name: NIELSEN, JOERGEN, VITUS

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

REF Corresponds to:

Ref document number: 69806273

Country of ref document: DE

Date of ref document: 20020801

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

Ref country code: PT

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: 20020926

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

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: 20021220

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

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

Ref country code: GB

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

Effective date: 20030323

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

Ref country code: IE

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

Effective date: 20030324

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20030327

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20030323

REG Reference to a national code

Ref country code: IE

Ref legal event code: MM4A

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

Ref country code: DK

Payment date: 20140325

Year of fee payment: 17

Ref country code: SE

Payment date: 20140327

Year of fee payment: 17

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

Ref country code: FR

Payment date: 20140317

Year of fee payment: 17

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

Ref country code: DE

Payment date: 20140327

Year of fee payment: 17

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 69806273

Country of ref document: DE

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

Effective date: 20150331

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

Ref country code: SE

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

Effective date: 20150324

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20151130

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: 20151001

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: 20150331

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

Ref country code: DK

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

Effective date: 20150331