EP0453696B1 - Four tunnel - Google Patents

Four tunnel Download PDF

Info

Publication number
EP0453696B1
EP0453696B1 EP90610015A EP90610015A EP0453696B1 EP 0453696 B1 EP0453696 B1 EP 0453696B1 EP 90610015 A EP90610015 A EP 90610015A EP 90610015 A EP90610015 A EP 90610015A EP 0453696 B1 EP0453696 B1 EP 0453696B1
Authority
EP
European Patent Office
Prior art keywords
kiln
tunnel kiln
side walls
combustion air
kiln according
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
EP90610015A
Other languages
German (de)
English (en)
Other versions
EP0453696A1 (fr
EP0453696B2 (fr
Inventor
Kim Walter
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.)
Niro Holding AS
Original Assignee
Niro Holding 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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=8205870&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0453696(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Niro Holding AS filed Critical Niro Holding AS
Priority to EP90610015A priority Critical patent/EP0453696B2/fr
Priority to DE69005101T priority patent/DE69005101T3/de
Publication of EP0453696A1 publication Critical patent/EP0453696A1/fr
Publication of EP0453696B1 publication Critical patent/EP0453696B1/fr
Application granted granted Critical
Publication of EP0453696B2 publication Critical patent/EP0453696B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • F27B9/3005—Details, accessories or equipment specially adapted for furnaces of these types arrangements for circulating gases
    • 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
    • F27B9/32—Casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/10—Arrangements for using waste heat
    • F27D17/17—Arrangements for using waste heat for preheating fluids, e.g. air or gases

Definitions

  • the heat loss will be about 400 kcal per hour per m 2 of the kiln surface when the airflow in the space 22 is zero (corresponding to a conventional kiln structure), while the heat loss is reduced to about 130 kcal per hour per m 2 , when the mass flow of combustion air through the space 22 is 20 kg air per hour per meter of the kiln.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Furnace Details (AREA)
  • Tunnel Furnaces (AREA)

Claims (10)

1. Four tunnel comportant une zone de préchauffage, une zone de chauffage, et une zone de refroidissement, ledit four comportant
une paroi supérieure et deux parois latérales opposées, qui définissent un tunnel, la paroi supérieure et chacune des parois latérales au moins au niveau de la zone de chauffage étant formées d'une paire d'enveloppes intérieure et extérieure agencées de manière opposée qui sont mutuellement espacées à peu près sur toute leur étendue,
plusieurs brûleurs montés dans chacune des parois latérales au niveau de la zone de chauffage, chaque brûleur ayant des entrées pour le combustible et pour l'air de combustion, respectivement, l'entrée d'air de combustion située au niveau de chaque brûleur communicant avec les espaces interconnectés définis entre lesdites enveloppes intérieure et extérieure des parois supérieure et latérales, et
des moyens d'alimentation en air pour l'ali- i-mentation forcée d'air de combustion à l'intérieur desdits espaces interconnectés.
2. Four tunnel selon la revendication 1, dans lequel les moyens d'alimentation en air sont connectés à l'espace de la paroi supérieure, les bruleurs étant agencés au niveau d'une partie inférieure de chacune des parois latérales.
3. Four tunnel selon la revendication 2, dans lequel les moyens d'alimentation en air sont connectés audit espace adjacent à la ligne centrale longitudinale de la paroi supérieure.
4. Four tunnel selon l'une quelconque des revendications 1 à 3, dans lequel chacun desdits espaces est défini entre des couches opposées d'un matériau à peu près imperméable aux gaz formant, respectivement, le côté intérieur de l'enveloppe extérieure et le côté extérieur de l'enveloppe intérieure.
5. Four tunnel selon la revendication 4, dans lequel lesdites couches sont des plaques ou des feuilles métalliques.
6. Four tunnel selon la revendication 4, dans lequel lesdites feuilles métallique sont réalisées en acier inoxydable.
7. Four tunnel selon l'une quelconque des revendications 1 à 5, dans lequel la paroi supérieure et les parois latérales opposées au niveau de la zone de chauffage sont formées par deux des éléments formant enveloppes intérieure et extérieure ayant chacune une section transversale à peu près en forme de U renversé, un espace de largeur pratiquement uniforme étant défini entre la surface extérieure de l'élément formant enveloppe intérieure et la surface intérieure de l'élément formant enveloppe extérieure.
8. Four tunnel selon l'une quelconque des revendications 1 à 7, dans lequel l'enveloppe intérieure de chaque paroi est réalisée en matériau formant brique réfractaire, tandis que l'enveloppe extérieure de chaque paroi est réalisée en matériau isolant thermiquement.
9. Four tunnel selon l'une quelconque des revendications 1 à 8, dans lequel l'épaisseur totale de chacune des parois supérieure et latérales est de 300 à 800 mm, de préférence 500 à 600 mm.
10. Four tunnel selon l'une quelconque des revendications 1 à 9, dans lequel l'espacement des enveloppes intérieure et extérieure est de 20 à 50 mm, de préférence d'environ de 30 mm.
EP90610015A 1990-03-07 1990-03-07 Four tunnel Expired - Lifetime EP0453696B2 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP90610015A EP0453696B2 (fr) 1990-03-07 1990-03-07 Four tunnel
DE69005101T DE69005101T3 (de) 1990-03-07 1990-03-07 Tunnelofen.

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP90610015A EP0453696B2 (fr) 1990-03-07 1990-03-07 Four tunnel

Publications (3)

Publication Number Publication Date
EP0453696A1 EP0453696A1 (fr) 1991-10-30
EP0453696B1 true EP0453696B1 (fr) 1993-12-08
EP0453696B2 EP0453696B2 (fr) 1997-03-12

Family

ID=8205870

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90610015A Expired - Lifetime EP0453696B2 (fr) 1990-03-07 1990-03-07 Four tunnel

Country Status (2)

Country Link
EP (1) EP0453696B2 (fr)
DE (1) DE69005101T3 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE9205383U1 (de) * 1992-04-18 1993-09-09 Keller GmbH, 49479 Ibbenbüren Tunnelofen
DE9205385U1 (de) * 1992-04-18 1993-08-12 Keller GmbH, 49479 Ibbenbüren Tunnelofen zum Brennen keramischer Formlinge
DE4327283B4 (de) * 1993-08-13 2005-10-06 Ernst Pennekamp Ohg Durchlaufofen für die Glasindustrie
NL1011465C2 (nl) * 1999-03-05 2000-09-14 Heattreat Advising Company N V Oveninrichting.
US8157887B2 (en) * 2010-08-06 2012-04-17 Scott William Frame Metal recovery system
CN113294803B (zh) * 2020-02-24 2024-04-05 广东保绿泰华生物能源有限公司 一种带空气换热夹层的生物质燃烧炉
CN115727667A (zh) * 2022-11-22 2023-03-03 宜春天卓新材料有限公司 一种节能保温隧道窑循环通风结构
CN121474851B (zh) * 2026-01-06 2026-04-03 内蒙古中科镧铈稀材科技有限公司 一种高抛蚀量稀土抛光粉煅烧窑及其制备工艺

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1510556A (en) * 1924-10-07 Tunnel kiln
GB2103773B (en) * 1981-07-04 1984-10-24 Peter Sturgess Shipley Heat recuperator
US4664618A (en) * 1984-08-16 1987-05-12 American Combustion, Inc. Recuperative furnace wall

Also Published As

Publication number Publication date
DE69005101T3 (de) 1997-06-12
DE69005101D1 (de) 1994-01-20
DE69005101T2 (de) 1994-06-23
EP0453696A1 (fr) 1991-10-30
EP0453696B2 (fr) 1997-03-12

Similar Documents

Publication Publication Date Title
US4664618A (en) Recuperative furnace wall
CA1172987A (fr) Systeme visant l'amelioration du debit dans les conduits entre les regenerateurs ou recuperateurs et les chambres de combustion des installations industrielles au gaz, en particulier les fours a coke
US4828483A (en) Method and apparatus for suppressing NOx formation in regenerative burners
JPH07196324A (ja) ガラス溶融炉及びその使用方法
EP0453696B1 (fr) Four tunnel
US4490107A (en) Method of processing charges in a continuous combustion furnace
JPS58501629A (ja) 前炉
US4444557A (en) Continuous combustion furnace
US4444558A (en) System for heating broadwise-end portions of metal material
US4069008A (en) Method and apparatus for heating a workpiece
US4069010A (en) Kiln for ceramic products
US3744965A (en) Tunnel kiln
US3722866A (en) Apparatus for feeding a gas furnace
KR20100105880A (ko) 개량된 연소시스템
US4531910A (en) Down draft kiln
US3241823A (en) Air-heater cupola constructions
GB1562681A (en) Horizontal coke oven
JP3419917B2 (ja) 連続加熱装置
US3134584A (en) Checkerbrick for industrial heating furnaces
US4229163A (en) Heating furnace
CA1177772A (fr) Dispositif pour ameliorer l'ecoulement des gaz admis a la chambre de combustion de systemes de production de gaz industriel, notamment les fours a coke
US3469827A (en) Furnace
US4497281A (en) Heater
US3355783A (en) Shuttle kiln
US3669426A (en) Furnaces

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: 19901219

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): DE GB IT SE

17Q First examination report despatched

Effective date: 19930326

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

Owner name: NIRO HOLDING A/S

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE GB IT SE

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

Ref country code: SE

Effective date: 19931208

ITF It: translation for a ep patent filed
REF Corresponds to:

Ref document number: 69005101

Country of ref document: DE

Date of ref document: 19940120

PLBI Opposition filed

Free format text: ORIGINAL CODE: 0009260

26 Opposition filed

Opponent name: HANS LINGL ANLAGENBAU UND VERFAHRENSTECHNIK GMBH &

Effective date: 19940908

PLAW Interlocutory decision in opposition

Free format text: ORIGINAL CODE: EPIDOS IDOP

PLAW Interlocutory decision in opposition

Free format text: ORIGINAL CODE: EPIDOS IDOP

PUAH Patent maintained in amended form

Free format text: ORIGINAL CODE: 0009272

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

Free format text: STATUS: PATENT MAINTAINED AS AMENDED

RAP2 Party data changed (patent owner data changed or rights of a patent transferred)

Owner name: NIRO HOLDING A/S

27A Patent maintained in amended form

Effective date: 19970312

AK Designated contracting states

Kind code of ref document: B2

Designated state(s): DE GB IT SE

ITF It: translation for a ep patent filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19980225

Year of fee payment: 9

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

Ref country code: DE

Payment date: 19980415

Year of fee payment: 9

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: 19990307

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

Effective date: 19990307

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: 20000101

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: 20050307