DE2130072A1 - Tunnel kiln gas circulation - reduces temp differences within heating - and cooling zones - Google Patents
Tunnel kiln gas circulation - reduces temp differences within heating - and cooling zonesInfo
- Publication number
- DE2130072A1 DE2130072A1 DE19712130072 DE2130072A DE2130072A1 DE 2130072 A1 DE2130072 A1 DE 2130072A1 DE 19712130072 DE19712130072 DE 19712130072 DE 2130072 A DE2130072 A DE 2130072A DE 2130072 A1 DE2130072 A1 DE 2130072A1
- Authority
- DE
- Germany
- Prior art keywords
- furnace
- temp
- differences
- tunnel
- heating
- 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.)
- Pending
Links
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
- F27B9/06—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated
- F27B9/10—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity heated without contact between combustion gases and charge; electrically heated heated by hot air or gas
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Details (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
Description
PER EINSCHREIBEN Impulsumwälzverfahren für Durchlauföfen nach deutschem Patent Nr. 1288 752 Das Betriebsverfahren nach Patent Nre 1288752 hat in der Praxis erheblich verbesserte Brennleistungen durch grosse Turbulenz in Tunnelöfen erbracht. Der vorliegenden Erfindung liegt die Aufgabe zugrunde, die in der Anwärm- und Kühizone bei hohen Brennkanälen vorhandene Temperaturdifferenzen weitgehend zu beseitigen. Es sind Umwälzeinrichtungen mittels Ventilatoren oder Injektoren bekannt, welche im wesentlichen kontinuierlich betrieben werden. Solche Umwälzeinrichtungen sind Jedoch in ihrer Wirksamkeit begrenzt, da kontinuierliche Umwälzströme zu geringe Geschwindigkeiten aufweisen, ansonsten sie Ubereässigen Kraftaufwand haben. Ein weiterer erheblicher Nachteil besteht darin, dass infolge der ständigen Ofenlängsströmung Strahlablenkung erfolgt.BY REGISTER Impulse circulation process for continuous furnaces according to German Patent No. 1288 752 The operating method according to Patent No. 1288752 has in practice Significantly improved firing performance due to large turbulence in tunnel kilns. The present invention is based on the object in the heating and cooling zone to largely eliminate the temperature differences that exist in the case of high firing channels. Circulating devices by means of fans or injectors are known which be operated essentially continuously. Such circulation devices are However, their effectiveness is limited because the continuous circulating flows are too low Have speeds, otherwise they have excessive expenditure of force. A Another significant disadvantage is that as a result of the constant longitudinal flow of the furnace Beam deflection takes place.
Der Erfindung liegt die Aufgabe zugrunde, eine intensive Querunwälzung für Tunnelöfen nach Patent Nr. 1288 752 zu schaffen, welche keine nennenswerte Strahlablenkung in den Querheisschlitsen ergibt. Ferner sollen hohe Strahlgoschwindigkeiten ersielt werden und der Kraftbedarf gering gehalten werden.The invention is based on the object of intensive transverse rolling for tunnel ovens according to patent no. 1288 752, which do not have any significant beam deflection in the Querheisschlitsen results. Furthermore, high jet speeds are to be achieved and the power requirement can be kept low.
Bei dem neuen Impulsumwälzverfahren für Tunnelöfen werden ansich bekannte Injektoreinrichtungen im wesentlichen rechtwinklig zur Brennkanalachse in Seitenwände und Decke des Ofens eingebaut. Die Injektoren werden mit Druckluft oder Ofengas als Treibmittel intermittierend betrieben. Dabei wird die Strahlumwälzung synchron zur Umkehrbewegung des Gasstromes nach Patent Nr. 1288 752 ein- und ausgeschaltet. Im wesentlichen wird die Stahlumwälzung jeweils dann kurzzeitig eingeschaltet, wenn die Hauptströmung in Ofenlängsrichtung den Wendepunkt durchläuft0 Während einer kurzen Zeit herrscht im Ofen hierbei keine Strömung, sodass die Strahlumwälzung intensiv ohne Strahlablenkung in Ofenlängsrichtung voll wirksam wird0 Durch das nur kurzzeitige Einschalten der Strahlwälzung synchron zur Ofenlängsbewegung kann mit geringerem Kraftaufwand und höheren Strahlgeschwindigkeiten gearbeitet werden.In the new pulse circulation method for tunnel kilns are known per se Injector devices essentially at right angles to the axis of the combustion channel in the side walls and ceiling of the furnace installed. The injectors are operated with compressed air or furnace gas operated intermittently as a propellant. Thereby the jet circulation synchronous for reversing the gas flow according to patent no. 1288 752 on and off. In essence, the steel circulation is switched on briefly when the main flow in the longitudinal direction of the furnace passes through the inflection point 0 during a For a short time there is no current in the furnace, so that the jet is circulated is fully effective without deflecting the jet in the longitudinal direction of the furnace can only briefly switch on the jet circulation synchronously with the longitudinal movement of the furnace can be worked with less effort and higher jet speeds.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712130072 DE2130072A1 (en) | 1971-06-18 | 1971-06-18 | Tunnel kiln gas circulation - reduces temp differences within heating - and cooling zones |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19712130072 DE2130072A1 (en) | 1971-06-18 | 1971-06-18 | Tunnel kiln gas circulation - reduces temp differences within heating - and cooling zones |
Publications (1)
Publication Number | Publication Date |
---|---|
DE2130072A1 true DE2130072A1 (en) | 1972-12-21 |
Family
ID=5811014
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE19712130072 Pending DE2130072A1 (en) | 1971-06-18 | 1971-06-18 | Tunnel kiln gas circulation - reduces temp differences within heating - and cooling zones |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE2130072A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2601038A1 (en) * | 1976-01-13 | 1977-07-21 | Manfred Leisenberg | Temperature compensation system for tunnel furnaces - blows air into furnace for breaking up horizontal hot gas stream |
DE3324050A1 (en) * | 1983-07-04 | 1985-01-17 | Wolfgang Dr.-Ing. 6312 Laubach Leisenberg | DEVICE FOR IMPLEMENTING A GAS-SHAPED MEDIUM INTO A FURNACE OR THE LIKE. |
-
1971
- 1971-06-18 DE DE19712130072 patent/DE2130072A1/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2601038A1 (en) * | 1976-01-13 | 1977-07-21 | Manfred Leisenberg | Temperature compensation system for tunnel furnaces - blows air into furnace for breaking up horizontal hot gas stream |
DE3324050A1 (en) * | 1983-07-04 | 1985-01-17 | Wolfgang Dr.-Ing. 6312 Laubach Leisenberg | DEVICE FOR IMPLEMENTING A GAS-SHAPED MEDIUM INTO A FURNACE OR THE LIKE. |
EP0134907A1 (en) * | 1983-07-04 | 1985-03-27 | Wolfgang Dr.-Ing. Leisenberg | Device for the pulsating supply of a gaseous medium to a kiln or suchlike |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OHA | Expiration of time for request for examination |