EP2564120B1 - Krematoriumsofen - Google Patents

Krematoriumsofen Download PDF

Info

Publication number
EP2564120B1
EP2564120B1 EP11761269.7A EP11761269A EP2564120B1 EP 2564120 B1 EP2564120 B1 EP 2564120B1 EP 11761269 A EP11761269 A EP 11761269A EP 2564120 B1 EP2564120 B1 EP 2564120B1
Authority
EP
European Patent Office
Prior art keywords
combustion
combustion chamber
exhaust gas
air supply
flue gas
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.)
Not-in-force
Application number
EP11761269.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2564120A1 (de
Inventor
Zhiyong Yu
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.)
Fien-Krematech GmbH
FIEN KREMATECH GmbH
Original Assignee
Fien-Krematech GmbH
FIEN KREMATECH 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 Fien-Krematech GmbH, FIEN KREMATECH GmbH filed Critical Fien-Krematech GmbH
Priority to PL11761269T priority Critical patent/PL2564120T3/pl
Publication of EP2564120A1 publication Critical patent/EP2564120A1/de
Application granted granted Critical
Publication of EP2564120B1 publication Critical patent/EP2564120B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F23G1/00—Furnaces for cremation of human or animal carcasses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C9/00—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber
    • F23C9/08—Combustion apparatus characterised by arrangements for returning combustion products or flue gases to the combustion chamber for reducing temperature in combustion chamber, e.g. for protecting walls of combustion chamber
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2202/00—Fluegas recirculation
    • F23C2202/30—Premixing fluegas with combustion air
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23C—METHODS OR APPARATUS FOR COMBUSTION USING FLUID FUEL OR SOLID FUEL SUSPENDED IN  A CARRIER GAS OR AIR 
    • F23C2900/00—Special features of, or arrangements for combustion apparatus using fluid fuels or solid fuels suspended in air; Combustion processes therefor
    • F23C2900/09002—Specific devices inducing or forcing flue gas recirculation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
    • F23G2900/00—Special features of, or arrangements for incinerators
    • F23G2900/00001—Exhaust gas recirculation

Definitions

  • the present invention relates to a cremation furnace.
  • Crematory ovens are already known from the prior art. They consist essentially of a combustion chamber with a ceiling, a wall and a bottom for supporting the cremation object, a heat supply device for heating the combustion chamber and a combustion air supply and an exhaust gas outlet.
  • Crematory ovens which have a combustion chamber with two combustion chamber sections, wherein in the first combustion chamber section pre-combustion of the cremation object and in the second combustion chamber section post-combustion of combustion residues from the first combustion chamber section.
  • the combustion residues remaining in the first combustion chamber section in a first combustion phase are supplied to the second combustion chamber section manually or via a discharge device, the waste heat resulting from the combustion of a further cremation object in the first combustion section being utilized for post combustion of the combustion residues in the second combustion chamber section.
  • a disadvantage of the solutions known from the prior art is that the Krematoriumsöfen have a low efficiency, so that a high energy input through the heat supply device is necessary during combustion and therefore there is a high fuel consumption. Furthermore, the duration of combustion is very long, as it is determined by the heavy or slow burning parts of the cremation article.
  • the object is to provide a Krematoriumsofen that allows energy-efficient and rapid combustion of cremation articles.
  • the present invention provides a crematory furnace comprising at least one combustion chamber having a ceiling, a wall and a floor for supporting the cremation article, a heat supply device, a combustion air supply and an exhaust gas outlet.
  • At least one combustion air supply passage and at least one exhaust gas recirculation passage are provided inside the ceiling and / or the wall and / or the bottom of the combustion chamber, the exhaust gas recirculation passage having an inlet and an outlet in the ceiling and / or the wall and / or in the floor.
  • the at least one combustion air supply duct opens in the at least one exhaust gas recirculation passage, so that a suction effect of the combustion air supply is caused in the combustion chamber with supplied combustion air.
  • the exhaust gas recirculation according to the invention causes, on the one hand, a return of the thermal energy contained in the exhaust gas and, on the other hand, an after-combustion of components which are not completely burned or are still combustible in the exhaust gas.
  • Further preheating of the combustion air is effected by arranging the exhaust gas recirculation passage and the combustion air supply passage in the ceiling and / or the wall and / or the bottom of the combustion chamber.
  • these parts When operating the crematorium, these parts have a very high temperature, whereby the temperature of the combustion gas is significantly increased. At sufficiently high temperatures, the gas mixture ignites, so that a flame is emitted at the outlet of the exhaust gas recirculation channel.
  • the exhaust gas recirculation according to the invention significantly increases the efficiency of the crematorium furnace.
  • the energy demand of a crematorium oven can be reduced by 80% or more.
  • an inventive cremation furnace comes with 6 to 7 m 3 , in extreme cases even 3 to 5 m 3 of natural gas.
  • the combustion air supply ducts may be routed in any turns within the ceiling and / or the wall and / or the bottom of the combustion chamber. The longer the path of the combustion air supply channels and thus the duration of the supplied combustion air is extended, the more heat energy is from the combustion air on its way through the strong heated parts of the combustion chamber added. The preheating of the combustion air leads to a more complete combustion of the cremation object.
  • a plurality of exhaust gas recirculation channels and / or a plurality of combustion air supply channels are provided, which are preferably arranged locally evenly distributed along the Einäscherungsussistandes.
  • a targeted, locally distributed exhaust gas recirculation and an improvement in the combustion of hardly combustible and / or slowly burning points of the cremation object can take place.
  • At least one combustion air supply duct opens into a plurality of exhaust gas recirculation channels. Due to the already mentioned mixing of the exhaust gas recirculated in the exhaust gas recirculation exhaust gas with the combustion air and taking place at sufficiently high temperatures ignition of the gas mixture at the outlet of the exhaust gas recirculation channel a flame outlet causes the suitably selected arrangement of the outlets of the exhaust gas recirculation channels directly to the cremation object, in particular to hard flammable or slowly burning areas of the cremation article can be directed.
  • all combustion air supply ducts are connected to a central combustion air supply.
  • pressurized combustion air for example, supplied by a fan to the combustion air supply ducts, thereby generating a suction effect in the exhaust gas recirculation ducts connected to the combustion air supply ducts.
  • the central supply of the combustion air supply ducts with combustion air a simpler construction of the crematorium furnace is achieved.
  • the exhaust gas recirculation channels have an inlet and an outlet in the ceiling and / or in the wall and / or in the bottom of the combustion chamber.
  • the inlet of an exhaust gas recirculation passage arranged in the wall is arranged above the outlet.
  • the combustion chamber includes first and second combustion chamber portions, wherein the first combustion chamber portion is configured for pre-combustion of the cremation article and the second combustion chamber portion for post-combustion of the combustion residues or mineralization of the ash from the first combustion chamber portion.
  • the bottom effects an at least partial division of the combustion chamber into a first and a second combustion chamber section, the withdrawal of the combustion gases arising in the first combustion chamber section taking place via the second combustion chamber section and the central exhaust gas outlet connected thereto.
  • the bottom is in this case traversed by at least one exhaust gas recirculation passage in such a way that a continuous connection between the first and second combustion chamber section is produced by the exhaust gas recirculation passage.
  • the floor has a plurality of elevations, which are formed to the spaced-apart support of the cremation object.
  • the elevations are each provided adjacent to the outlets of the exhaust gas recirculation channels.
  • Fig. 1 is denoted by the reference numeral 1 an inventive Krematoriumsofen. Dashed lines indicate that the corresponding object is not in the illustrated section plane, but is located in the wall or in the bottom of the crematorium furnace.
  • the cremation furnace 1 has, in a manner known per se, a combustion chamber 2, which is enclosed on the outer peripheral side by a wall 2.1.
  • the wall 2.1 is formed in the embodiment shown multi-layered by an outer, formed by a housing 2.2 layer and a second, inside fitting, an insulation 2.3 forming layer.
  • a heat supply device 4 is provided which supplies thermal energy to the combustion chamber 2.
  • the heat supply device 4 is in particular a burner, for example a gas or oil burner.
  • the cremation furnace 1 further comprises a combustion air supply 5 and an exhaust gas outlet 6.
  • combustion air is supplied with overpressure of the combustion chamber 2, for example by a fan combustion.
  • the combustion air may be fresh air, oxygen-enriched fresh air or pure oxygen.
  • the resulting during combustion exhaust gases are discharged via the exhaust gas outlet 6 from the combustion chamber 2 and a chimney preferably with a flue gas cleaning system.
  • a ceiling (not shown) and a floor 3 are provided within the combustion chamber 2, on which the cremation object is placed for combustion.
  • At least one combustion air supply duct 7 and at least one exhaust gas recirculation duct 8 are provided in the ceiling and / or in the wall 2.1 and / or in the bottom 3 of the combustion chamber 2, these ducts 7, 8 being connected to one another in such a way that due to the suction effect of the combustion air supply into the combustion chamber 2 at least part of the exhaust gas produced by the combustion is supplied to the combustion process via the exhaust gas recirculation passage 8 again.
  • a branched network of combustion air supply ducts 7 is provided in the wall 2.1 of the combustion chamber 2 and in the bottom 3.
  • the combustion air supply ducts 7 are in this case all connected to the central combustion air supply 5, so that over this combustion air supply 5, for example, by a fan pressurized combustion air is distributed into the combustion air supply ducts 7.
  • exhaust gas recirculation channels 8 each having an inlet 8.1 and an outlet 8.2, are provided within the wall 2.1 of the combustion chamber 2 and in the bottom 3.
  • the exhaust gas recirculation channels 8 within the wall 2.1 of the combustion chamber 2 preferably run parallel to the vertical axis HA of the crematorium furnace 1 and may be formed in the insulation 2.3 and / or in the housing 2.2 or formed by arranged within the combustion chamber 2 tubular elements.
  • the exhaust gas recirculation channels 8 in the bottom 3 extend in the embodiment shown obliquely at an acute angle to the vertical axis HA and preferably penetrate the bottom 3 completely.
  • the exhaust gas recirculation channels 8 are preferably arranged distributed locally along the transverse axis QA of the combustion chamber 2.
  • the combustion air supply duct 7 or branches from this combustion air supply duct 7 are connected to the individual exhaust gas recirculation ducts 8 in such a way that the exhaust gas produced by the combustion is sucked into the inlet 8.1 and led out through the outlet 8.2 due to the suction effect becomes.
  • a combustion air supply duct 7 or a branch from this combustion air supply duct 7 opens into a plurality of exhaust gas recirculation ducts 8. This results in the exhaust gas recirculation channels 8 mixing the sucked exhaust gas with freshly supplied Combustion air and after the ignition of the gas mixture afterburning.
  • the bottom 3 is arranged inside the combustion chamber 2 such that the combustion chamber 2 is subdivided into a first and a second combustion chamber section 2a, 2b.
  • the first combustion chamber section 2a is preferably arranged above the second combustion chamber section 2b with respect to the vertical axis HA of the crematorium furnace 1.
  • the combustion chamber 2 is only partially or partially divided into the two combustion chamber sections 2a, 2b, so that the resulting in the first combustion chamber section 2a exhaust gas, as in FIG. 1 indicated by the arrow 10, escapes via the second combustion chamber section 2b and the exhaust gas outlet 6 provided there.
  • the introduction of the cremation article takes place in the first combustion chamber section 2a, in such a way that it is at least partially placed after a heating phase of the crematorium furnace 1 by energy input from the heat supply device 4 to the bottom 3.
  • the cremation object is not completely located on the bottom 3, but is held by elevations 9 spaced from the bottom 3.
  • a first combustion phase the combustion of the cremation object takes place in the first combustion chamber section 2a.
  • the remaining after the first combustion phase, not completely burned remains of Einäscherungsussistandes be supplied to the second combustion chamber section 2b for afterburning in a second combustion phase, so that after this second combustion phase, a complete cremation of the cremation object has occurred.
  • FIG. 2 shows a combustion recirculation channel 8 introduced into the wall 2.1 of the combustion chamber 2 with a combustion air supply channel 7 opening therein.
  • the exhaust gas recirculation channel 8 has an inlet 8.1 and an outlet 8.2, the inlet 8.1 being provided above the outlet 8.2.
  • Both the exhaust gas recirculation passage 8 and the combustion air supply passage 7 run in the embodiment shown within the insulation 2.3.
  • the exhaust gas recirculation channel 8 further consists essentially of three approximately rectilinear channel sections 8.3, 8.4 and 8.5, the first channel section 8.3 approximately perpendicular to the second channel section 8.4 and the second channel section 8.4 approximately perpendicular to the third channel section 8.5.
  • the first and third channel sections 8.3, 8.5 extend parallel at a distance and form the inlet 8.1 or the outlet 8.2 on the free end side.
  • the first to third channel sections 8.3, 8.4 and 8.5 are connected via arcuate channel connection sections to a continuous exhaust gas recirculation channel 8.
  • the combustion air supply passage 7 or a branch from a combustion air supply passage 7 opens in the exhaust gas recirculation passage 8.
  • the outlets 8.2 are preferably oriented such that the flames exiting at the outlets 8.2 act directly on the cremation object.
  • FIG. 3 The bottom 3, which at least partially separates the first combustion chamber section 2a from the second combustion chamber section 2b, is traversed transversely by at least one exhaust gas recirculation passage 8, which underside an inlet 8.1 and the upper side has an outlet 8.2.
  • the bottom 3 has an elevation 9, which is formed tongue-shaped in the embodiment shown.
  • the tongue-shaped elevation 9 is in this case designed such that the outlet 8.2 is covered on the top side by the elevation 9. This effectively prevents the passage of combustion residues from the first combustion chamber portion 2a into the second combustion chamber portion 2b.
  • a suction effect is generated at the inlet 8.1 of the exhaust gas recirculation passage 8, causing exhaust gas recirculation from the second combustion chamber portion 2b into the first combustion chamber portion 2a.
  • freshly supplied combustion air is in this case mixed with the recirculated exhaust gas of the second combustion chamber section 2b and ignited at sufficiently high temperature within the combustion chamber 2, so that a flame formation in the exhaust gas recirculation passage 8 and in particular at the outlet 8.2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Incineration Of Waste (AREA)
  • Combustion Of Fluid Fuel (AREA)
EP11761269.7A 2010-06-25 2011-06-22 Krematoriumsofen Not-in-force EP2564120B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL11761269T PL2564120T3 (pl) 2010-06-25 2011-06-22 Piec krematoryjny

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010017578A DE102010017578B3 (de) 2010-06-25 2010-06-25 Krematoriumsofen
PCT/DE2011/075147 WO2012022327A1 (de) 2010-06-25 2011-06-22 Krematoriumsofen

Publications (2)

Publication Number Publication Date
EP2564120A1 EP2564120A1 (de) 2013-03-06
EP2564120B1 true EP2564120B1 (de) 2014-01-15

Family

ID=44680965

Family Applications (1)

Application Number Title Priority Date Filing Date
EP11761269.7A Not-in-force EP2564120B1 (de) 2010-06-25 2011-06-22 Krematoriumsofen

Country Status (6)

Country Link
US (1) US20130206045A1 (pl)
EP (1) EP2564120B1 (pl)
CN (1) CN102959332B (pl)
DE (1) DE102010017578B3 (pl)
PL (1) PL2564120T3 (pl)
WO (1) WO2012022327A1 (pl)

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3749031A (en) * 1971-11-08 1973-07-31 Wasteco Inc Controlled atmosphere incinerator
US3777676A (en) * 1972-07-31 1973-12-11 W Lagen Apparatus and technique for incinerating solid fuels containing carbonizable material
US3815523A (en) * 1973-04-04 1974-06-11 Kleenaire Recycling Syst Inc Incinerator
US3799077A (en) * 1973-04-05 1974-03-26 R Lowe Low-pollution trash incinerator
US4167909A (en) * 1976-12-09 1979-09-18 Dauvergne Hector A Solid fuel burner
CH677139A5 (pl) * 1988-06-24 1991-04-15 Ygnis Sa
DE4118261A1 (de) * 1991-06-04 1992-12-10 Viessmann Hans Geblaesebrenner fuer heizkessel
DE4402172C2 (de) * 1994-01-26 2000-09-28 Steinmueller Gmbh L & C Verfahren zur Verbrennung von Brennstoff und Anlage zur Durchführung des Verfahrens
DE19628741C2 (de) * 1996-07-17 1999-11-04 Sbw Sonderabfallentsorgung Bad Verfahren zur Feuerbestattung
DE19652967C1 (de) * 1996-12-19 1998-04-09 Sbw Sonderabfallentsorgung Bad Feuerbestattungseinrichtung
DE19732867A1 (de) * 1997-07-18 1999-01-21 Linde Ag Verfahren und Vorrichtung zum Betreiben von Gasbrennern
CN2423490Y (zh) * 2000-05-23 2001-03-14 北京市火化设备厂 火化用台车
HU222415B1 (hu) * 2000-07-13 2003-07-28 Gábor Földes Forgórendszerű hamvasztóberendezés
FR2850734B1 (fr) * 2003-02-05 2006-02-03 Abderrahmann Serdjebi Dispositif anti-pollution atmospherique s'adaptant sur tous les appareils a combustion
ITMI20052405A1 (it) * 2005-12-16 2007-06-17 Associazione Comitato Ev K2 Cn Sistema d'inceneritore di rifiuti indiferrenziati
DE102007045623B4 (de) * 2007-09-24 2009-07-23 Knorr-Bremse Systeme für Nutzfahrzeuge GmbH Verfahren und Vorrichtung zum Verbessern einer Abgasrückführung einer Verbrennungskraftmaschine
US8590463B1 (en) * 2008-05-23 2013-11-26 Daniel Richard Higgins Method and apparatus for drying solid fuels
US20090320725A1 (en) * 2008-06-25 2009-12-31 Alstom Technology Ltd. Furnace system with internal flue gas recirculation
CN201434390Y (zh) * 2009-07-07 2010-03-31 成都普兰斯纳科技有限公司 一种宠物遗体焚化炉

Also Published As

Publication number Publication date
CN102959332B (zh) 2015-03-25
DE102010017578B3 (de) 2012-01-05
PL2564120T3 (pl) 2014-08-29
US20130206045A1 (en) 2013-08-15
WO2012022327A1 (de) 2012-02-23
EP2564120A1 (de) 2013-03-06
CN102959332A (zh) 2013-03-06

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