DE1008858B - Process for protecting furnace linings which are sensitive to atmospheric influences - Google Patents

Process for protecting furnace linings which are sensitive to atmospheric influences

Info

Publication number
DE1008858B
DE1008858B DEG12785A DEG0012785A DE1008858B DE 1008858 B DE1008858 B DE 1008858B DE G12785 A DEG12785 A DE G12785A DE G0012785 A DEG0012785 A DE G0012785A DE 1008858 B DE1008858 B DE 1008858B
Authority
DE
Germany
Prior art keywords
furnace
protective gas
oven
sensitive
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.)
Pending
Application number
DEG12785A
Other languages
German (de)
Inventor
Theo Grinberg
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to DEG12785A priority Critical patent/DE1008858B/en
Publication of DE1008858B publication Critical patent/DE1008858B/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • F27D1/00—Casings; Linings; Walls; Roofs
    • F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
    • F27D1/1678—Increasing the durability of linings; Means for protecting
    • 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
    • F27D7/00—Forming, maintaining, or circulating atmospheres in heating chambers
    • F27D7/06—Forming or maintaining special atmospheres or vacuum within heating chambers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Furnace Details (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Description

Verfahren zum Schutze von Ofenauskleidungen, welche gegen atmosphärische Einflüsse empfindlich sind Ofenauskleidungen, vorzugsweise aus Dolomit oder dolomithaltigen Werkstoffen, zersetzen sich unter dem Einfluß atmosphärischer Luft während des Stillstandes des Ofens. Man hat zur Vermeidung dieses Nachteiles versucht, die Ofen bei Stillstand gefüllt stehenzulassen, beispielsweise in der Kalkindustrie. Dabei wurde auch für eine gewisse Zeit ein Schutz der Ofenauskleidung erzielt. Ein hermetischer Luftabschluß war aber nicht erreichbar, so daß ein völliger Schutz der empfindlichen Ofenauskleidung nicht möglich war. Schwierigkeiten bereitete die Inbetriebnahme des gefüllt stehengebliebenen Ofens, weil der ganze Ofeninhalt entleert werden mußte, was verständlicherweise mit hohen Kosten verbunden war.Process for protecting furnace linings against atmospheric Furnace linings, preferably made of dolomite or those containing dolomite, are sensitive to influences Materials, decompose under the influence of atmospheric air during standstill of the furnace. To avoid this disadvantage, attempts have been made to keep the furnace at a standstill to be left full, for example in the lime industry. It was also for A certain time a protection of the furnace lining is achieved. A hermetic seal of air but was not achievable, so that a complete protection of the sensitive furnace lining was not possible. Difficulties caused the commissioning of the one that had stopped being filled Oven, because the entire contents of the oven had to be emptied, which is understandable was associated with high costs.

Es ist auch versucht worden, an Stelle des bisher üblichen Schamottefutters ein widerstandsfähigeres Material, beispielsweise teergebundenen Dolomit zu verwenden, jedoch bat sich erwiesen, daß dies Material sich während des Betriebes zwar sehr gut bewährt, bei stillgelegten Ofen ebenfalls den atmosphärischen Einflüssen nicht standhält.Attempts have also been made to replace the previously common chamotte lining to use a more resistant material, for example tar-bound dolomite, However, it turned out that this material was very different during operation Well proven, even when the furnace is shut down, it is not affected by atmospheric influences withstands.

Demgegenüber wird durch das Verfahren gemäß der Erfindung erreicht, daß die Ofenzustellung während der Stillegung den atmosphärischen Einflüssen entzogen und daher vor Zerfall geschützt wird.In contrast, the method according to the invention achieves that the furnace lining removed from the atmospheric influences during the shutdown and is therefore protected from decay.

Das Verfahren besteht darin, den Ofen durch ein Schutzgas unter schwachem Überdruck zu halten. Demgemäß wird der Ofen bei der Stillegung allseitig geschlossen und nur je eine Stelle für die Einführung und den Abzug des Schutzgases an geeigneter Stelle vorgesehen.The procedure consists in putting the furnace through a protective gas under a weak atmosphere To keep overpressure. Accordingly, the furnace is closed on all sides when it is shut down and only one point each for the introduction and withdrawal of the protective gas at a suitable location Place provided.

Hierbei sind die Austrittsöffnungen stets von geringerem Querschnitt, so daß ein ständiger Überdruck im Ofen den Eintritt atmosphärischer Luft verhindert.The outlet openings are always of a smaller cross-section, so that a constant overpressure in the furnace prevents the entry of atmospheric air.

Das erforderliche Schutzgas kann in einer besonderen Feuerung erzeugt werden. Auch Abgase eines Ofens können verwendet werden. Vorteilhaft wird das Schutzgas durch ein Gebläse in den stillgelegten Ofen gedrückt oder bei unmittelbarem Anschluß des Ofens an den Schutzgaserzeuger durch natürlichen Auftrieb oder durch einen Exhaustor angesaugt.The required protective gas can be generated in a special furnace will. Exhaust gases from a furnace can also be used. The protective gas is advantageous pushed into the shutdown furnace by a fan or if it is immediately connected of the furnace to the protective gas generator through natural buoyancy or through an exhaustor sucked in.

Je nach Bedarf können die Schutzgase vor Eintritt in den stillgelegten Ofen durch Absorbtion der nicht erwünschten Bestandteile geeigneter gemacht werden.Depending on requirements, the protective gases can be used before entering the decommissioned Furnace can be made more suitable by absorbing the undesired components.

Claims (6)

PATENTANSPRÜCHE: 1. Verfahren zum Schutz von Ofenauskleidungen, welche gegen atmosphärische Einflüsse empfindlich sind, dadurch gekennzeichnet, daß dem stillgelegten . Ofen nach dessen allseitigem Schließen ein Schutzgas zugeführt wird, welches das Ofeninnere unter schwachem Überdruck hält und damit den Eintritt atmosphärischer Luft verhindert. PATENT CLAIMS: 1. Method for protecting furnace linings, which are sensitive to atmospheric influences, characterized in that the disused. A protective gas is supplied to the furnace after it has been closed on all sides, which keeps the inside of the furnace under slight overpressure and thus the inlet more atmospheric Air prevents. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Schutzgas in einer besonderen Feuerung oder einer Vergasungsanlage erzeugt wird. 2. The method according to claim 1, characterized in that the protective gas is generated in a special furnace or gasification plant. 3. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß das Schutzgas einem im Betrieb befindlichen Ofen entnommen wird. 3. Procedure according to claim 1, characterized in that the protective gas is in operation Oven is removed. 4. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Schutzgas durch ein Gebläse in den stillgelegten Ofen gedrückt wird, wobei das Gas zur Sicherung des inneren Überdruckes durch Öffnungen geringeren Querschnittes den Ofen verläßt. 4. The method according to any one of claims 1 to 3, characterized in that that the protective gas is forced into the shutdown furnace by a fan, wherein the gas to safeguard the internal overpressure through openings with a smaller cross-section leaves the oven. 5. Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß das Schutzgas in den stillgelegten Ofen angesaugt wird und im selben Saugzuge den Ofen verläßt, wobei das Ansaugen wahlweise durch natürlichen Auftrieb oder einen Exhaustor erfolgt, und die Überleitung des Schutzgases unmittelbar vom Gaserzeuger in den stillgelegten Ofen vorgenommen wird. 5. The method according to any one of claims 1 to 3, characterized in, that the protective gas is sucked into the shutdown furnace and in the same induced draft leaves the furnace, the suction optionally by natural buoyancy or a Exhaustor takes place, and the transfer of the protective gas directly from the gas generator is made in the decommissioned furnace. 6. Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß das Schutzgas vor Eintritt in den stillgelegten Ofen gereinigt wird. In Betracht gezogene Druckschriften: Deutsche Patentschrift Nr. 627 196: Zeitschrift »Elektrowärme« (1938), 7, S. 187 bis 189 und S. 190 bis 192.6. The method according to any one of the claims 1 to 5, characterized in that the protective gas before entering the disused Oven is cleaned. Publications considered: German patent specification No. 627 196: Journal »Elektrowärme« (1938), 7, pp. 187 to 189 and pp. 190 to 192.
DEG12785A 1953-10-07 1953-10-07 Process for protecting furnace linings which are sensitive to atmospheric influences Pending DE1008858B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEG12785A DE1008858B (en) 1953-10-07 1953-10-07 Process for protecting furnace linings which are sensitive to atmospheric influences

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEG12785A DE1008858B (en) 1953-10-07 1953-10-07 Process for protecting furnace linings which are sensitive to atmospheric influences

Publications (1)

Publication Number Publication Date
DE1008858B true DE1008858B (en) 1957-05-23

Family

ID=7119875

Family Applications (1)

Application Number Title Priority Date Filing Date
DEG12785A Pending DE1008858B (en) 1953-10-07 1953-10-07 Process for protecting furnace linings which are sensitive to atmospheric influences

Country Status (1)

Country Link
DE (1) DE1008858B (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE627196C (en) * 1932-05-18 1936-03-12 Carl Irving Hayes Process for creating and maintaining an indifferent atmosphere in bright glow muffles operating at high temperatures

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE627196C (en) * 1932-05-18 1936-03-12 Carl Irving Hayes Process for creating and maintaining an indifferent atmosphere in bright glow muffles operating at high temperatures

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