EP0717830B1 - Durchlaufofen - Google Patents
Durchlaufofen Download PDFInfo
- Publication number
- EP0717830B1 EP0717830B1 EP95921694A EP95921694A EP0717830B1 EP 0717830 B1 EP0717830 B1 EP 0717830B1 EP 95921694 A EP95921694 A EP 95921694A EP 95921694 A EP95921694 A EP 95921694A EP 0717830 B1 EP0717830 B1 EP 0717830B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- furnace
- heating zone
- continuous furnace
- accordance
- air ducts
- 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
Links
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
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories or equipment specially adapted for furnaces of these types
- F27B9/40—Arrangements of controlling or monitoring devices
-
- 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
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/12—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity with special arrangements for preheating or cooling the charge
-
- 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
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/30—Details, accessories or equipment specially adapted for furnaces of these types
- F27B9/36—Arrangements of heating devices
Definitions
- the invention relates to a continuous furnace for burning ceramic moldings.
- continuous furnace stands for all types of continuous ovens, for example Tunnel kilns with kiln cars or roller kilns.
- ceramic molded parts basically includes all Types of ceramic moldings, such as porcelain, sanitary ware etc. But there are also special ceramic products, such as ferrites, for example soft ferrites.
- Such soft ferrites are characterized in that they produced using a binder / pressing aid and processed into molded parts.
- These additives usually consist of organic substances, such as Polyvinyl alcohol.
- the soft ferrites mentioned show compared to conventional ones ceramic products a special behavior during the Burning process. When heating in the oven, i.e. in the heating zone, burn out these additives so that it becomes a Contamination of the furnace atmosphere with organic components is coming.
- DE 36 32 918 C2 describes a method for heating the Heating zone of a tunnel oven described in the area the warming zone was supplied with hot furnace gas Branch line is arranged from the above Conveyors the heating zone is heated and furnace gas the heating zone in the opposite direction into the bypass line for thermal post-cleaning.
- DE 32 32 294 C1 describes a method for sintering Soft ferrites in a chamber furnace, i.e. one discontinuous working furnace, described in which the furnace atmosphere during the so-called “binder phase” additionally is heated outside the furnace chamber, namely in that the volatilize during the binder phase Binder in the circulation circuit outside the furnace chamber be burned continuously and the resulting Combustion gases remain in the circulation circuit and only the excess gas quantities are removed.
- the gas supplied to the furnace chamber be practically “inert". In this way, however Do not control / regulate the furnace atmosphere in the desired way.
- the known method is discontinuous Oven limited.
- the invention has for its object a continuous furnace specify that meets the following criteria: it should the energetically effective ones present in the flue gas of the furnace Components, in particular those that outgas in the heating zone Binder proportions can be used for thermal purposes.
- a defined furnace atmosphere should above all be adjustable in the heating zone. After all, the Pyroprocess overall to be optimized energetically.
- Such a continuous furnace has the following advantages:
- the heating zone becomes hot air at one or more points deducted, for example with gaseous binder components is loaded during the heating phase of the ceramic Degas molded parts from these.
- the combustion gases then become one Combustion chamber fed, burned there, so that one largely cleaned hot air then to the heating zone can be traced back.
- the combustion chamber can in the oven, but separate from the oven duct, for example below of the furnace duct or externally.
- the recirculated hot air has a temperature, for example from 600 to 1,000 ° C and is therefore significantly above the temperature required in the heating zone.
- the temperature in the heating zone - in Direction of transport of the firing material considered - different (increasing). In any case, however, is usually the maximum temperature of the furnace atmosphere in the heating zone well below the aforementioned 1,000 ° C, namely for example at 600 ° C.
- An embodiment of the invention provides that Warm air pipes - viewed in the transport direction of the goods - to be arranged one behind the other along the heating zone, preferably to homogenize the furnace atmosphere warm air is supplied from both sides.
- warm air pipes led vertically one above the other into the heating zone to be even over the height of the furnace duct Ensure warm air supply.
- One embodiment of the invention provides that the amount of cold air supplied from the cold air lines or their temperature can be regulated or controlled accordingly a preselectable temperature / atmosphere profile for the continuous furnace.
- the regulation or control can, for example for a corresponding valve in the connection area of the cold air lines to the respective hot air pipe.
- the external combustion chamber can be in a suitable location are arranged and is for example with an or equipped with several own burners. Any excess air can be led away via a chimney.
- the continuous furnace itself can be done in a conventional manner Be energetically supplied, for example with gas or electric heating elements.
- a tunnel kiln is shown with the reference number 10 an oven entrance 12, a heating zone 14, a firing zone 16 and has a cooling zone 18 and an oven exit 20.
- the transport route of the fired material passed through the furnace 10 is represented by the arrow T.
- a flue gas line 22 runs from the heating zone into one Combustion chamber 24, which is fired with a burner 26 becomes.
- a hot air line runs from the combustion chamber 24 28 back towards the heating zone 14. Before entering The hot air line 28 branches into the heating zone 14 however, here in six sub-lines (warm air lines called) and marked with the reference numeral 30.
- the Warm air lines 30 each open in pairs from the left and right through the furnace wall into the furnace duct and are open each furnace side in the transport direction T arranged one behind the other.
- a cold air line 32 leads to each warm air line 30, a control valve 34 being arranged in each case in the transition region is set so that the amount of cold air supplied can be.
- the temperature is of course also the same of the cold air supplied to the individual hot air lines 30 individually adjustable.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Tunnel Furnaces (AREA)
- Furnace Details (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Description
- Der Ofen weist eine Aufheiz-, eine Brenn- und eine Abkühlzone auf,
- von der Aufheizzone verläuft mindestens eine Rauchgasleitung in eine Verbrennungskammer,
- von der Verbrennungskammer führt mindestens eine Heißluftleitung zurück zur Aufheizzone,
- die Heißluftleitung verzweigt sich vor der Aufheizzone in mehrere Warmluftleitungen, die beabstandet zueinander in die Aufheizzone einmünden,
- in die Heißluftleitung und/oder die Warmluftleitungen münden Kaltluftleitungen ein.
Claims (10)
- Durchlaufofen zum Brennen von keramischen Formteilen mit folgenden Merkmalen:1.1 einer Aufheiz- (14), einer Brenn- (16) und einer Abkühlzone (18),1.2 von der Aufheizzone (14) verläuft mindestens eine Rauchgasleitung (22) in eine Verbrennungskammer (24),1.3 von der Verbrennungskammer (24) führt mindestens eine Heißluftleitung (28) zurück zur Aufheizzone (14),1.4 die Heißluftleitung (28) verzweigt sich vor der Aufheizzone (14) in mehrere Warmluftleitungen (30), die beabstandet zueinander in die Aufheizzone (14) einmünden,1.5 in die Heißluftleitung (28) und/oder die Warmluftleitungen (30) münden Kaltluftleitungen (32) ein.
- Durchlaufofen nach Anspruch 1, bei dem jeder Warmluftleitung (30) eine eigene Kaltluftleitung (32) zugeordnet ist.
- Durchlaufofen nach Anspruch 1 oder 2, bei dem die aus den Kaltluftleitungen (32) zugeführte Kaltluftmenge regeloder steuerbar ist.
- Durchlaufofen nach Anspruch 3, bei dem im Anschlußbereich der Kaltluftleitungen (32) zu den jeweiligen Warmluftleitungen (30) ein Regel- oder Steuerventil (34) angeordnet ist.
- Durchlaufofen nach einem der Ansprüche 1 bis 4, bei dem die Verbrennungskammer (24) mit Brennern (26) ausgebildet ist.
- Durchlaufofen nch einem der Ansprüche 1 bis 5, bei dem die Aufheizzone (14) frei von Brennern oder elektrischen Heizeinrichtungen ist.
- Durchlaufofen nach einem der Ansprüche 1 bis 6, bei dem die Warmluftleitungen (30) in beide Wandflächen des Ofens einmünden.
- Durchlaufofen nach einem der Ansprüche 1 bis 7, bei dem die Warmluftleitungen (30), in Transportrichtung (T) der keramischen Formteile betrachtet, hintereinander angeordnet sind.
- Durchlaufofen nach einem der Ansprüche 1 bis 8, bei dem die Warmluftleitungen (30) mit unterschiedlichem Abstand zum Boden des Ofens in die Aufheizzone (14) einmünden.
- Durchlaufofen nach einem der Ansprüche 1 bis 8, bei dem die Verbrennungskammer unterhalb des Bodens des Ofenkanals angeordnet ist.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4420295 | 1994-06-10 | ||
| DE4420295A DE4420295C1 (de) | 1994-06-10 | 1994-06-10 | Durchlaufofen |
| PCT/DE1995/000778 WO1995034793A2 (de) | 1994-06-10 | 1995-06-09 | Durchlaufofen |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0717830A1 EP0717830A1 (de) | 1996-06-26 |
| EP0717830B1 true EP0717830B1 (de) | 1998-09-16 |
Family
ID=6520263
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP95921694A Expired - Lifetime EP0717830B1 (de) | 1994-06-10 | 1995-06-09 | Durchlaufofen |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6116894A (de) |
| EP (1) | EP0717830B1 (de) |
| JP (1) | JP3047192B2 (de) |
| AU (1) | AU2668195A (de) |
| DE (1) | DE4420295C1 (de) |
| WO (1) | WO1995034793A2 (de) |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1007623C2 (nl) * | 1997-11-26 | 1999-05-31 | Dijk Heating B V Van | Inrichting voor het verwarmen van fluïdum. |
| BR9814710A (pt) * | 1997-12-02 | 2000-10-03 | Corning Inc | Método para queima de corpos alveolares cerâmicos |
| KR20010033449A (ko) † | 1997-12-22 | 2001-04-25 | 알프레드 엘. 미첼슨 | 세라믹 하니콤 몸체 가열방법과 그 가열을 위해 사용되는터널로 |
| NZ523920A (en) | 2003-01-31 | 2005-11-25 | Fonterra Co Operative Group | Methods for extracting lipids from diary products using a near critical phase fluid |
| CN101316521B (zh) | 2005-04-28 | 2014-06-25 | 恩兹默泰克有限公司 | 极性脂质混合物、其制备和应用 |
| US8046932B2 (en) | 2006-10-12 | 2011-11-01 | Usnr/Kockums Cancar Company | Method and apparatus for inhibiting pitch formation in the wet seal exhaust duct of a veneer dryer |
| US8196310B2 (en) | 2007-02-09 | 2012-06-12 | Usnr/Kockums Cancar Company | Method and apparatus for controlling cooling temperature and pressure in wood veneer jet dryers |
| US20090206500A1 (en) * | 2008-02-19 | 2009-08-20 | Michael Maguire | Pre-heated combustion air in treating ceramic components |
| EP2634161A4 (de) | 2010-10-29 | 2014-04-16 | Sumitomo Chemical Co | Verfahren zur herstellung eines gebrannten körpers und dafür verwendeter brennofen |
| US9080235B2 (en) | 2012-04-17 | 2015-07-14 | Jamar International Corporation | Composition and method for diffusion alloying of ferrocarbon workpiece |
| ITRE20120058A1 (it) * | 2012-09-21 | 2014-03-22 | Sacmi Forni Spa | Forno per la cottura in continuo di laterizi su supporti a cassetta |
| DE102013010885A1 (de) * | 2013-07-01 | 2015-01-22 | Eisenmann Ag | Verfahren zum Sintern von Sinterwerkstücken sowie Anlage hierfür |
| CN104359309B (zh) * | 2014-09-25 | 2017-01-18 | 深圳市时代高科技设备股份有限公司 | 一种全自动真空预热炉 |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE736398C (de) * | 1938-03-03 | 1943-06-15 | Heimsoth Vollmer Dressler G M | Tunnelofen fuer die Herstellung von Isoliersteinen |
| US2750680A (en) * | 1952-08-02 | 1956-06-19 | Oxy Catalyst Inc | Method for treating materials |
| FR1255054A (fr) * | 1960-01-21 | 1961-03-03 | Stein & Roubaix | Perfectionnement aux fours de chauffage de métaux à haute température, par flammedirecte, sans oxydation |
| US3437321A (en) * | 1966-05-27 | 1969-04-08 | B & K Machinery Int Ltd | Regenerative paint drying system for continuous strip |
| ES375321A1 (es) * | 1969-01-10 | 1972-05-01 | S C E I Societa Construzioni E | Perfeccionamientos en sistemas para el calentamiento de hornos continuos. |
| US3606279A (en) * | 1969-10-08 | 1971-09-20 | United States Steel Corp | Apparatus for heat treating a sheet |
| US3787171A (en) * | 1972-06-15 | 1974-01-29 | Hunter Eng Co | Closed loop, inert atmosphere, paint line oven heat source |
| US4140467A (en) * | 1975-06-09 | 1979-02-20 | Kenneth Ellison | Convection oven and method of drying solvents |
| JPS53104610A (en) * | 1977-02-08 | 1978-09-12 | Shinagawa Refractories Co | Tunnel kilns for reheating carbonaceous material impregnated with tar and pitch |
| US4133636A (en) * | 1977-06-30 | 1979-01-09 | Blu-Surf, Inc. | Tentor |
| FR2420109A2 (fr) * | 1978-03-13 | 1979-10-12 | Machinery International Ltd Bk | Fours de traitement thermique |
| DE3232294C1 (de) * | 1982-08-31 | 1983-12-29 | Rudolf 5160 Düren Brands | Verfahren und Vorrichtung zum Sintern von Keramikformlingen, insbesondere von Weichferriten |
| US4503018A (en) * | 1983-02-14 | 1985-03-05 | Davy Mckee Corporation | Desulfurization of phosphogypsum |
| US4662840A (en) * | 1985-09-09 | 1987-05-05 | Hunter Engineering (Canada) Ltd. | Indirect fired oven system for curing coated metal products |
| DE3632918A1 (de) * | 1986-09-27 | 1988-06-09 | Haessler Andreas | Tunnelofen mit nebenstrom-nachverbrennung |
| JP2543565B2 (ja) * | 1988-03-31 | 1996-10-16 | 日本碍子株式会社 | セラミックスの焼成に用いるトンネル炉 |
| DE3908758C1 (en) * | 1989-03-17 | 1990-04-19 | Hans Lingl Anlagenbau Und Verfahrenstechnik Gmbh & Co Kg, 7910 Neu-Ulm, De | Tunnel furnace for baking light bricks |
| DE3923887A1 (de) * | 1989-07-19 | 1991-01-24 | Manfred Leisenberg Kg | Tunnelofen |
| JP2859987B2 (ja) * | 1991-12-24 | 1999-02-24 | 日本碍子株式会社 | 連続焼成炉の温度制御装置 |
-
1994
- 1994-06-10 DE DE4420295A patent/DE4420295C1/de not_active Expired - Lifetime
-
1995
- 1995-06-09 JP JP8501472A patent/JP3047192B2/ja not_active Expired - Fee Related
- 1995-06-09 EP EP95921694A patent/EP0717830B1/de not_active Expired - Lifetime
- 1995-06-09 AU AU26681/95A patent/AU2668195A/en not_active Abandoned
- 1995-06-09 US US08/596,154 patent/US6116894A/en not_active Expired - Lifetime
- 1995-06-09 WO PCT/DE1995/000778 patent/WO1995034793A2/de not_active Ceased
Also Published As
| Publication number | Publication date |
|---|---|
| AU2668195A (en) | 1996-01-05 |
| JPH09502012A (ja) | 1997-02-25 |
| EP0717830A1 (de) | 1996-06-26 |
| DE4420295C1 (de) | 1995-10-26 |
| US6116894A (en) | 2000-09-12 |
| WO1995034793A3 (de) | 1996-01-18 |
| WO1995034793A2 (de) | 1995-12-21 |
| JP3047192B2 (ja) | 2000-05-29 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0717830B1 (de) | Durchlaufofen | |
| DE3918585C1 (de) | ||
| DE2637646B2 (de) | Anwärmofen | |
| EP0245389B1 (de) | Durchlaufofen | |
| DE3640727C2 (de) | ||
| DE2643406B2 (de) | Tunnelofen mit Direktbefeuerung | |
| DE2614952A1 (de) | Verfahren und vorrichtung zum kontinuierlichen brennen von kohlenstoffhaltigen formen | |
| AT401817B (de) | Verfahren zum brennen von keramischen formlingen und anlage zur durchführung des verfahrens | |
| DE4023432A1 (de) | Tunnelofen | |
| AT390322B (de) | Vorrichtung zum durchwaermen von stahlteilen | |
| EP0042372A1 (de) | Verfahren zum Brennen von dünnwandigen, insbesondere Kernlöcher enthaltenden keramischen Formlingen sowie Anlage zur Durchführung des Verfahrens | |
| DE1907494C3 (de) | Hubbalkenofen | |
| DE3436055C1 (de) | Industrieofen/Trockner-Kombination | |
| DE3534447C2 (de) | ||
| DE10023702A1 (de) | Brennofen und Verfahren zum Brennen keramischer Rohlinge | |
| WO1987003358A1 (fr) | Procede et dispositif de traitement thermique de corps moules | |
| DE1542369B2 (de) | Kammerofen mit wanderndem feuer | |
| DE10215670C1 (de) | Industrieofen | |
| DE3215032C2 (de) | Verfahren zur Rauchgasführung in einem Tunnelofen sowie Vorrichtung zur Durchführung des Verfahrens | |
| WO2007062780A1 (de) | Vorrichtung zum beheizen von ofenanlagen | |
| DE1542369C (de) | Kammerofen mit wanderndem Feuer | |
| EP0184175B1 (de) | Verfahren und Vorrichtung zum Brennen von gross- und feinkeramischen Materialien | |
| DE3546517C2 (en) | Method for gentle heating of an oven | |
| DE102011016260B4 (de) | Vorrichtung und Verfahren zum Erwärmen von Metallbolzen | |
| DE19528147A1 (de) | Verfahren und Vorrichtung zur Aufheizung und anschließenden Abkühlung eines transportierbaren Gutes |
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: A1 Designated state(s): FR GB IT |
|
| 17P | Request for examination filed |
Effective date: 19960202 |
|
| 17Q | First examination report despatched |
Effective date: 19970414 |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| 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): FR GB IT |
|
| GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19981127 |
|
| ET | Fr: translation filed | ||
| 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 | ||
| REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20050531 Year of fee payment: 11 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20050621 Year of fee payment: 11 |
|
| 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: 20060609 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20060630 Year of fee payment: 12 |
|
| GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20060609 |
|
| REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST Effective date: 20070228 |
|
| 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: 20060630 |
|
| 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 Effective date: 20070609 |