EP0579987A1 - Four rotatif - Google Patents

Four rotatif Download PDF

Info

Publication number: EP0579987A1
Authority: EP; European Patent Office
Prior art keywords: rotary tube; tube furnace; primary air; air nozzles; furnace according
Prior art date: 1992-07-24
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

EP93110401A

Other languages

German (de)

English (en)

Other versions

EP0579987B1 (fr

Inventor

Dieter Prof. Dr.-Ing. Wurz

Arvid Christmann

Gebhard Dr.-Ing. Schetter

Wilfried Schings

Dietmar Dr.-Ing. Schneider

Rüdiger Trumpf

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.)

Deutsche Babcock Anlagen AG

Original Assignee

Deutsche Babcock Anlagen AG

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.)

1992-07-24

Filing date

1993-06-30

Publication date

1994-01-26

1993-06-30 Application filed by Deutsche Babcock Anlagen AG filed Critical Deutsche Babcock Anlagen AG

1994-01-26 Publication of EP0579987A1 publication Critical patent/EP0579987A1/fr

1995-09-13 Application granted granted Critical

1995-09-13 Publication of EP0579987B1 publication Critical patent/EP0579987B1/fr

2013-06-30 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Images

Classifications

- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
- F27B7/20—Details, accessories or equipment specially adapted for rotary-drum furnaces
- F27B7/36—Arrangements of air or gas supply devices
- F27B7/362—Introducing gas into the drum axially or through the wall
- 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

Definitions

Hazardous waste is preferably incinerated in rotary kilns.
the combustion gases from the rotary kiln are introduced into an afterburning chamber, where they have to remain at a certain temperature level for a minimum period in accordance with legal requirements.
Figures 1 and 2 show in a schematic longitudinal section and in a cross section along the line II-II in Figure 1 an example of such an incinerator according to the prior art.
Solid and pasty waste is fed in via an inlet chute 2 or in containers on the fixed end face 4 of the rotary kiln 1 via the inlet cross section 3. Liquid residues are also supplied via this end face 4. Liquid residues with a higher calorific value and contaminated waste water are also injected into an afterburning chamber 6. Reliable atomization into droplets that are as small as possible is of great importance here, so that significant portions of the residence time in the afterburning chamber are not used for the process of droplet evaporation.
the quantity and type of supply of the combustion air are of considerable importance for the combustion process in the rotary kiln 1. So far, the combustion air has been introduced into the rotary tube 8 of the rotary tube furnace 1 via the inlet chute 2 for the solid fuel or via a nozzle system.
the flow rate of the primary air that has entered through the inlet chute 2 is relatively low, so that only little energy is available for increasing the turbulence.
the flow impulse of the two types of primary air introduction has a strong component in the direction of the rotary tube axis A, so that partial quantities of the flue gases can pass through the rotary tube relatively quickly, even if a low-pulse return flow region is generated in the region of the rotary tube furnace near the end wall.
the object of the invention is to ensure that the residues are burned as far as possible both in the gas phase and in the fuel bed.
the invention thus proposes a new type of primary air supply. While previously the primary air supply counteracted natural convection in the rotary tube, the new type of primary air supply according to the invention fanned natural, that is, thermally induced convection.
FIGS. 3 to 5 The same parts are identified in FIGS. 3 to 5 with the same reference numerals as in FIGS. 1 and 2.
FIGS. 3 and 4 The flow field is shown in FIGS. 3 and 4, as is obtained by looking into the clockwise rotating (arrow f) rotary tube 8 through a transparent end wall 4 which does not rotate with the rotary tube 8. At least two, and at most eight primary air nozzles 20, 22 penetrate the upper region of the end wall 4 at an angle ⁇ . When viewed from the front wall 4 (FIG.
the primary air is blown in substantially tangentially to a circle around the axis of the rotary tube (A) through the primary air nozzles 20, 22 (that is, not here via the inlet chute 2), so that two opposite vortices 24 , 26 are generated with axes of rotation 25, 27 and directions of rotation parallel to the axis of the rotary tube (A), which leads to a central ascending current in the same direction as the thermally induced movement of the fuel gases (double arrow T, F).
the primary air heats up on its way to the fuel bed 10 by admixing recirculating combustion gases (FIG. 4), and ignites the fire from both sides of the fuel bed 10.
the steepness or slope of the vortex spiral can be adjusted to the requirements of the respective fuel bed 10, such as the local oxygen demand.
each of the two to eight primary air nozzles 20, 22 with an adjustable swirl generator (adjustable swirl guide grill). While an unswirled primary air jet remains comparatively well focused and penetrates the fuel bed 10 with considerable momentum, which can be accompanied by an increased flying sparks, a primary air jet will weaken with increasing self-twist due to combustion gas admixture.
mixed operation may also be advantageous, in which a certain percentage of the primary air is introduced into the rotary tube 1 as before via the solid fuel feed (inlet chute 2 according to FIG. 1). This applies in particular to avoiding the entry of whirled up particles into the inlet chute 2.
the “double swirl system” constructed as described according to the invention also has a relevant swirl in the end of the rotary tube at the rotary tube outlet 9, it makes sense to use the movement quantity contained in this vortex system for mixing processes in the afterburning chamber 6.
the burners or mixed air nozzles 30, 32, 33 used at the transition from rotary kiln 1 to afterburner chamber 6 or in afterburner chamber 6 are arranged in such a way that with them the already existing tendency towards mixture exiting from rotary kiln 1 Double vortex 24, 26 is reinforced so that opposing vortex 34, 36 are also present in the afterburning chamber 6.
burners and mixed air nozzles 30, 32, 33 in the afterburning chamber 6 it is crucial not to make the individual pulse sources too weak.
the number of burners or mixed air nozzles must therefore not be too large.
An arrangement of at least three burners according to FIG. 5 or vice versa should be the preferred configuration, that is, with only one central burner 33 on the rotary tube side and two burners 30, 33 on the side away from the rotary tube (wall 7) of the afterburning chamber 6, have proven their worth.

Landscapes

Engineering & Computer Science (AREA)
Mechanical Engineering (AREA)
General Engineering & Computer Science (AREA)
Muffle Furnaces And Rotary Kilns (AREA)
Incineration Of Waste (AREA)

EP93110401A 1992-07-24 1993-06-30 Four rotatif Expired - Lifetime EP0579987B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE4224571A DE4224571C2 (de)	1992-07-24	1992-07-24	Drehrohrofen
DE4224571		1992-07-24

Publications (2)

Publication Number	Publication Date
EP0579987A1 true EP0579987A1 (fr)	1994-01-26
EP0579987B1 EP0579987B1 (fr)	1995-09-13

Family

ID=6464061

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP93110401A Expired - Lifetime EP0579987B1 (fr)	1992-07-24	1993-06-30	Four rotatif

Country Status (5)

Country	Link
US (1)	US5286200A (fr)
EP (1)	EP0579987B1 (fr)
DE (2)	DE4224571C2 (fr)
DK (1)	DK0579987T3 (fr)
ES (1)	ES2078089T3 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0741267A1 (fr) *	1995-05-05	1996-11-06	Deutsche Babcock Anlagen Gmbh	Procédé et four pour l'incinération de déchets
DE19650785A1 (de) *	1996-12-06	1998-07-02	Steinmueller Gmbh L & C	Verfahren zum Verbrennen von Brenngut in einem Drehrohrofen und Drehrohrofen zur Durchführung des Verfahrens
WO2005003665A3 (fr) *	2003-07-04	2005-04-21	Holcim Ltd	Procede et systeme d'entrainement et le melange d'un gaz de procede dans un systeme de four
DE102005008893A1 (de) *	2005-02-26	2006-08-31	Forschungszentrum Karlsruhe Gmbh	Verfahren zur Erhöhung des Gebindedurchsatzes in Drehrohranlagen

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5632616A (en) *	1994-11-28	1997-05-27	Cadence Environmental Energy, Inc.	Method and apparatus for injecting air into long cement kilns
DE10036410B4 (de) *	2000-07-26	2013-07-25	Basf Se	Verfahren und Vorrichtung zum Ausbrand von Gut in einem Drehrohrofen
US7229281B2 (en) *	2000-09-11	2007-06-12	Cadence Environmental Energy, Inc.	Method of mixing high temperature gases in mineral processing kilns
US6672865B2 (en) *	2000-09-11	2004-01-06	Cadence Enviromental Energy, Inc.	Method of mixing high temperature gases in mineral processing kilns
ES2323485B1 (es) *	2008-01-15	2010-04-21	Antonio Garcia Gonzalez	Metodo para el tratamiento integral de desechos industriales.
CN109341330B (zh) *	2018-11-29	2024-02-13	扬州市银焰机械有限公司	一种回转窑燃烧器智能控制系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3360250A (en) *	1965-08-26	1967-12-26	Basf Ag	Multiple-chamber rotary kiln
EP0353491A1 (fr) *	1988-07-29	1990-02-07	ABB Management AG	Installation pour brûler des déchets spéciaux
DE3826894A1 (de) *	1988-08-08	1990-02-15	Harald Gebhard Boehler	Drehrohrofen mit sektionaler verbrennungsluftzufuhr

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1526057A1 (de) *	1965-05-14	1969-06-26	Bremer Gmbh	Mitdrehende Brenner und Luftduesen an Drehtrommeloefene fuer Abfallverbrennung
DE2709671C3 (de) *	1977-03-05	1981-11-12	Chadwell Newport Beach Calif. O'Connor	Drehrohrofen zur pyrolythischen Zersetzung von Stoffen
US4288215A (en) *	1979-11-05	1981-09-08	Caterpillar Tractor Co.	Method and apparatus for preheating a rotatable fluidizable bed
GB2130696B (en) *	1982-11-16	1986-04-16	Nd Engineering Limited	Improved rotary high temperature reactor
US4934931A (en) *	1987-06-05	1990-06-19	Angelo Ii James F	Cyclonic combustion device with sorbent injection
US4859177A (en) *	1988-02-16	1989-08-22	Fuller Company	Apparatus for incinerating combustible material
US5005493A (en) *	1989-11-08	1991-04-09	American Combustion, Inc.	Hazardous waste multi-sectional rotary kiln incinerator
US5199357A (en) *	1991-03-25	1993-04-06	Foster Wheeler Energy Corporation	Furnace firing apparatus and method for burning low volatile fuel

1992
- 1992-07-24 DE DE4224571A patent/DE4224571C2/de not_active Expired - Fee Related
- 1992-11-18 US US07/978,401 patent/US5286200A/en not_active Expired - Fee Related
1993
- 1993-06-30 ES ES93110401T patent/ES2078089T3/es not_active Expired - Lifetime
- 1993-06-30 EP EP93110401A patent/EP0579987B1/fr not_active Expired - Lifetime
- 1993-06-30 DK DK93110401.2T patent/DK0579987T3/da active
- 1993-06-30 DE DE59300585T patent/DE59300585D1/de not_active Expired - Fee Related

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3360250A (en) *	1965-08-26	1967-12-26	Basf Ag	Multiple-chamber rotary kiln
EP0353491A1 (fr) *	1988-07-29	1990-02-07	ABB Management AG	Installation pour brûler des déchets spéciaux
DE3826894A1 (de) *	1988-08-08	1990-02-15	Harald Gebhard Boehler	Drehrohrofen mit sektionaler verbrennungsluftzufuhr

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
EP0741267A1 (fr) *	1995-05-05	1996-11-06	Deutsche Babcock Anlagen Gmbh	Procédé et four pour l'incinération de déchets
WO1996035081A1 (fr) *	1995-05-05	1996-11-07	Deutsche Babcock Anlagen Gmbh	Procede et foyer pour l'incineration des ordures
DE19650785A1 (de) *	1996-12-06	1998-07-02	Steinmueller Gmbh L & C	Verfahren zum Verbrennen von Brenngut in einem Drehrohrofen und Drehrohrofen zur Durchführung des Verfahrens
DE19650785C2 (de) *	1996-12-06	1998-12-24	Steinmueller Gmbh L & C	Verfahren zum Verbrennen von Brenngut in einem Drehrohrofen und Drehrohrofen zur Durchführung des Verfahrens
EP0846918A3 (fr) *	1996-12-06	1999-01-20	L. & C. Steinmüller GmbH	Methode pour la combustion de combustible dans un four tournant et four tournant pour la mise en oeuvre de ce procédé
WO2005003665A3 (fr) *	2003-07-04	2005-04-21	Holcim Ltd	Procede et systeme d'entrainement et le melange d'un gaz de procede dans un systeme de four
DE102005008893A1 (de) *	2005-02-26	2006-08-31	Forschungszentrum Karlsruhe Gmbh	Verfahren zur Erhöhung des Gebindedurchsatzes in Drehrohranlagen
DE102005008893B4 (de) *	2005-02-26	2007-04-19	Forschungszentrum Karlsruhe Gmbh	Verfahren zur Erhöhung des Gebindedurchsatzes in Drehrohranlagen

Also Published As

Publication number	Publication date
ES2078089T3 (es)	1995-12-01
DE4224571A1 (de)	1994-01-27
EP0579987B1 (fr)	1995-09-13
US5286200A (en)	1994-02-15
DE59300585D1 (de)	1995-10-19
DK0579987T3 (da)	1996-02-05
DE4224571C2 (de)	1994-06-16

Publication	Publication Date	Title
DE2527618C2 (de)	1985-09-26	Verfahren und Vorrichtung zur Verbrennung von Kohlenstaub
DE69409058T2 (de)	1998-09-10	Verfahren zum betrieb eines integrierten tangential-feuerungssystems mit niedrigem nox-gehalt
DE69730702T3 (de)	2009-01-22	Vorrichtung und verfahren zur verbrennung von brennstoff
DE69213162T2 (de)	1997-01-16	Verfahren zur Abfallverbrennung
DE69216865T2 (de)	1997-06-26	Verfahren zur verbrennung von ablauge
EP0579987B1 (fr)	1995-09-13	Four rotatif
CH680157A5 (fr)	1992-06-30
DE69212686T2 (de)	1997-03-06	Brenneranlage für fliessfähige Abfallstoffe
EP0204176A2 (fr)	1986-12-10	Chambre de combustion pour un appareil à combustion à lit fluidisé
DE3420065A1 (de)	1984-12-06	Verfahren und vorrichtung zum verbrennen von brennstoffen in form einer wasser-in-oel-emulsion
EP1031000B1 (fr)	2001-08-29	Dispositif et reacteur pour la combustion de combustibles
DE19510874A1 (de)	1996-09-26	Verfahren und Vorrichtung zum Erschmelzen von silikatischen Recycling-Rohstoffen
WO1996035081A1 (fr)	1996-11-07	Procede et foyer pour l'incineration des ordures
EP0101462B1 (fr)	1989-07-26	Bruleur pour carburants a l'etat poudreux, gazeux et/ou liquide
DE2455103A1 (de)	1975-05-28	Verfahren sowie vorrichtung zum zerstaeuben eines brennbaren stoffes
DE2745756C3 (de)	1980-09-11	Verbrennungsofen
DE69305796T2 (de)	1997-03-13	Zerstäuberbrenner
DE3939197C2 (fr)	1993-08-12
DE1930496A1 (de)	1971-01-07	Verfahren zum Beseitigen von Abfallstoffen
DE69209340T2 (de)	1996-10-31	Verbrennungsverfahren zum gleichseitigen Regeln von Stickstoffoxiden und Produkte von unvollständiger Verbrennung
DE2223631A1 (de)	1973-11-29	Verbrennungsofen fuer fluessige brennstoffe
DE2612302C2 (de)	1986-02-20	Verfahren zur Verbrennung organische Bestandteile enthaltender Abwässer
EP0391427A2 (fr)	1990-10-10	Procédé et dispositif de préparation sans danger pour l'environnement d'une composition asphaltique avec asphalte récupéré usé
DE908513C (de)	1954-04-05	Verbrennungsvorrichtung fuer fluessigen Kraftstoff
DE1157333B (de)	1963-11-14	Verbrennungsvorrichtung fuer fluessige Brennstoffe

Legal Events

Date	Code	Title	Description
1993-12-10	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
1994-01-26	AK	Designated contracting states	Kind code of ref document: A1 Designated state(s): BE DE DK ES FR GB IT NL SE
1994-04-13	17P	Request for examination filed	Effective date: 19940210
1995-04-12	17Q	First examination report despatched	Effective date: 19950223
1995-07-28	GRAA	(expected) grant	Free format text: ORIGINAL CODE: 0009210
1995-09-13	AK	Designated contracting states	Kind code of ref document: B1 Designated state(s): BE DE DK ES FR GB IT NL SE
1995-10-19	REF	Corresponds to:	Ref document number: 59300585 Country of ref document: DE Date of ref document: 19951019
1995-10-27	ET	Fr: translation filed
1995-11-01	GBT	Gb: translation of ep patent filed (gb section 77(6)(a)/1977)	Effective date: 19951002
1995-11-10	ITF	It: translation for a ep patent filed
1995-12-01	REG	Reference to a national code	Ref country code: ES Ref legal event code: FG2A Ref document number: 2078089 Country of ref document: ES Kind code of ref document: T3
1996-02-05	REG	Reference to a national code	Ref country code: DK Ref legal event code: T3
1996-07-19	PLBE	No opposition filed within time limit	Free format text: ORIGINAL CODE: 0009261
1996-07-19	STAA	Information on the status of an ep patent application or granted ep patent	Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT
1996-09-04	26N	No opposition filed
2001-06-13	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: FR Payment date: 20010613 Year of fee payment: 9
2001-06-14	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: GB Payment date: 20010614 Year of fee payment: 9
2001-06-18	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: SE Payment date: 20010618 Year of fee payment: 9 Ref country code: DK Payment date: 20010618 Year of fee payment: 9
2001-06-21	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: NL Payment date: 20010621 Year of fee payment: 9
2001-06-22	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: DE Payment date: 20010622 Year of fee payment: 9
2001-06-25	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: ES Payment date: 20010625 Year of fee payment: 9
2001-07-13	PGFP	Annual fee paid to national office [announced via postgrant information from national office to epo]	Ref country code: BE Payment date: 20010713 Year of fee payment: 9
2002-01-01	REG	Reference to a national code	Ref country code: GB Ref legal event code: IF02
2002-06-30	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: 20020630 Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020630
2002-07-01	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: 20020701 Ref country code: ES Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20020701
2002-07-31	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: 20020731
2002-12-31	BERE	Be: lapsed	Owner name: DEUTSCHE BABCOCK ANLAGEN G.M.B.H. Effective date*: 20020630
2003-01-01	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 NON-PAYMENT OF DUE FEES Effective date: 20030101 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030101
2003-02-03	REG	Reference to a national code	Ref country code: DK Ref legal event code: EBP
2003-02-19	GBPC	Gb: european patent ceased through non-payment of renewal fee	Effective date: 20020630
2003-02-28	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: 20030228
2003-03-03	NLV4	Nl: lapsed or anulled due to non-payment of the annual fee	Effective date: 20030101
2003-03-04	EUG	Se: european patent has lapsed
2003-04-04	REG	Reference to a national code	Ref country code: FR Ref legal event code: ST
2004-04-16	REG	Reference to a national code	Ref country code: ES Ref legal event code: FD2A Effective date: 20030711
2005-06-30	PG25	Lapsed in a contracting state [announced via postgrant information from national office to epo]	Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;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: 20050630