DE3916043A1 - Rotary soil-decontaminating furnace - is annular with metal surface and adjacent loading and discharging point - Google Patents

Rotary soil-decontaminating furnace - is annular with metal surface and adjacent loading and discharging point

Info

Publication number
DE3916043A1
DE3916043A1 DE19893916043 DE3916043A DE3916043A1 DE 3916043 A1 DE3916043 A1 DE 3916043A1 DE 19893916043 DE19893916043 DE 19893916043 DE 3916043 A DE3916043 A DE 3916043A DE 3916043 A1 DE3916043 A1 DE 3916043A1
Authority
DE
Germany
Prior art keywords
furnace
rotary hearth
hearth furnace
annular
disposal
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.)
Ceased
Application number
DE19893916043
Other languages
German (de)
Inventor
Erfinder Wird Nachtraeglich Benannt Der
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.)
HAESSLER ANDREAS DIPL ING FH
Original Assignee
HAESSLER ANDREAS DIPL ING FH
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 HAESSLER ANDREAS DIPL ING FH filed Critical HAESSLER ANDREAS DIPL ING FH
Priority to DE19893916043 priority Critical patent/DE3916043A1/en
Publication of DE3916043A1 publication Critical patent/DE3916043A1/en
Ceased 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
    • F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
    • F27D17/004—Systems for reclaiming waste heat
    • 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
    • F27B9/14—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment
    • F27B9/16—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity characterised by the path of the charge during treatment; characterised by the means by which the charge is moved during treatment the charge moving in a circular or arcuate path

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Environmental & Geological Engineering (AREA)
  • Processing Of Solid Wastes (AREA)
  • Muffle Furnaces And Rotary Kilns (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

The rotary furnance frees soil from contaminating hydrocarbon material, and is annular in shape. It has adjacent loading (4) and discharge (5) points. Its surface is made of metal, and it is mounted on supporting brackets (3). Part of the already-heated material can be mixed in with the incoming material, and reels (9) can be mounted above the furnance, constantly turning the material over. Hearing can be by the exhaust gas from a tunnel-type oven. USE/ADVANTAGE - Heat treatment of soil to remove contaminating material, without.

Description

Drehherdöfen sind in der Technik für verschiedene Zwecke be­ kannt und eingesetzt, insbesondere in der Metallurgie.Rotary hearth furnaces are used in technology for various purposes known and used, especially in metallurgy.

Nach dem Stand der Technik werden mit Kohlenwasserstoffen ver­ seuchte Böden in Drehrohröfen durch Erwärmung entsorgt oder mikrobakteriell behandelt. Bei gröberem Material wird die Hochdruckwäsche mit Wasser angewandt. Als zuverlässig haben sich die thermischen Verfahren erwiesen, die allerdings auch aufwendig sind. Dabei entstehen bei Drehrohröfen auch Staub­ emissionen wegen der Bewegung des Entsorgungsgutes während der Behandlung. Außerdem ist das Vortrocknen des Gutes ein kostspieliger Vorgang, wenn er außerhalb des Ofens erfolgt. Falls er im Ofen durchgeführt wird, setzt er die Leistung des Ofens stark herab.According to the prior art, hydrocarbons are used contaminated soils in rotary kilns are disposed of by heating or treated with microbial. With coarser material, the High pressure wash with water applied. Have reliable the thermal processes proved, but so did are expensive. Dust is also generated in rotary kilns emissions due to the movement of the waste during treatment. In addition, the pre-drying of the goods is a costly operation when done outside the oven. If it is done in the oven, it sets the performance of the Oven down sharply.

Aufgabe der Erfindung ist es, ein Verfahren anzugeben, bei dem vorstehende Nachteile weitgehend vermieden werden, so daß der Entsorgungsprozeß wirtschaftlicher gestaltet werden kann. Das Entsorgungsgut soll auf einem Herd ruhend auf ca. 850°C erhitzt werden, so daß keine oder nur geringe Staubentwicklung auftritt.The object of the invention is to provide a method in which The above disadvantages are largely avoided, so that the Disposal process can be made more economical. The Disposal material should be heated to approx. 850 ° C while resting on a stove  be so that little or no dust is generated.

Gemäß der Erfindung wird vorgeschlagen, den Entsorgungsprozeß gemäß Fig. 1 mittels eines an sich bekannten Drehherdofens (1) mit metallischer Herdfläche (2), welche auf Stützkonsolen (3) (siehe Querschnitt Fig. 2) unterlüftbar aufgesetzt ist, durch­ zuführen.According to the invention, it is proposed to carry out the disposal process according to FIG. 1 by means of a rotary hearth furnace ( 1 ) known per se with a metallic hearth surface ( 2 ), which is placed on support brackets ( 3 ) (see cross-section FIG. 2) and can be ventilated.

Die Aufgabe des Entsorgungsgutes erfolgt an einer Aufgabestelle (4) oder Stellen, die in der Nähe der Entnahmestelle (5) liegt. Im Ofen befinden sich Wendeeinrichtungen in Form von getriebenen Haspeln, welche das Entsorgungsgut langsam umdrehen zur gleich­ mäßigen Wärmebehandlung. Die Wärmebehandlung selbst erfolgt durch Beheizung unter und über dem Drehherd oder mittels heißen Ofen­ abgasen anderer Öfen, z. B. Tunnelöfen (6) für porosierte Ziegel mit integrierter thermischer Abgasreinigung. Durch letztere Koppelung ergibt sich ein wärmewirtschaftlich besonders vorteil­ hafter Prozeß, da bei solchen Tunnelöfen Abgas (7) von ca. 800-900°C bereits zur Beheizung des Drehherdofens zur Ver­ fügung steht.The material to be disposed of is placed at a drop-off point ( 4 ) or at a point close to the removal point ( 5 ). In the furnace there are turning devices in the form of driven reels, which slowly turn the waste material over for uniform heat treatment. The heat treatment itself is carried out by heating under and above the rotary hearth or by means of a hot furnace. B. tunnel kilns ( 6 ) for porous bricks with integrated thermal exhaust gas cleaning. The latter coupling results in an economically particularly advantageous process, since exhaust gas ( 7 ) of approximately 800-900 ° C. is already available for heating the rotary hearth furnace in such tunnel furnaces.

Das Trocknen des Entsorgungsgutes kann erfindungsgemäß dadurch erfolgen, daß ein Teil des schon geglühten heißen Entsorgungs­ gutes dem Rohgut wieder zugemischt wird. Dadurch wird das Ent­ stehen von Trocknerabluft vermieden, die sonst staubhaltig wäre und einen Entstaubungsaufwand verursachen würde.According to the invention, drying of the waste material can thereby done that part of the already annealed hot disposal good is added to the raw material again. This will make the Ent Avoid dryer exhaust air that would otherwise be dusty and would cause dedusting effort.

Das Ofenabgas (7) wird vorzugsweise dem Ofen in der Nähe der Aufgabestelle entnommen, wo es mit der geringstmöglichen Temperatur anfällt. Im übrigen wird der Drehherdofen in be­ kannter Weise mit Brennern (8) von der Seite oder der Ofen­ decke her beheizt.The furnace exhaust gas ( 7 ) is preferably taken from the furnace near the feed point, where it occurs at the lowest possible temperature. Otherwise, the rotary hearth furnace is heated in known manner with burners ( 8 ) from the side or the furnace ceiling.

Mittels Wendeeinrichtungen (9) wird das Entsorgungsgut auf dem Drehherd aufgelockert und gemischt.The waste material on the rotary hearth is loosened and mixed by means of turning devices ( 9 ).

Claims (4)

1. Verfahren und Drehherdofen zur Entsorgung von mit Kohlenwas­ serstoffen verunreinigten Böden, dadurch gekennzeichnet, daß der ringmantelförmige Ofen eine Aufgabe und benachbarte Ent­ nahmestelle aufweist und die Herdfläche aus metallischen Werk­ stoffen gebildet ist, die auf Stützkonsolen aufgestelzt ist.1. The method and rotary hearth furnace for the disposal of soils contaminated with Kohlenwas, characterized in that the annular jacket-shaped furnace has a task and adjacent Ent removal point and the hearth surface is formed from metallic materials, which is mounted on support brackets. 2. Verfahren und Drehherdofen nach Anspruch 1, dadurch gekenn­ zeichnet, daß dem in dem Ofen gelangenden rohen Entsorgungs­ gut ein Teil des schon geglühten, noch heißen Entsorgungs­ gutes beigemischt wird.2. The method and rotary hearth furnace according to claim 1, characterized records that the raw disposal in the furnace a good part of the already hot and still hot disposal good is added. 3. Drehherdofen nach Anspruch 1 und 2, dadurch gekennzeichnet, daß über dem Drehherd eine Anzahl von Wendeeinrichtungen, z. B. Haspeln angeordnet sind. 3. rotary hearth furnace according to claim 1 and 2, characterized in that a number of turning devices, e.g. B. Reels are arranged.   4. Drehherdofen nach Anspruch 1-3, dadurch gekennzeichnet, daß die Beheizung des Drehherdofens mindestens teilweise aus heißen Abgasen eines Tunnelofens beheizt wird, der nach Verfahren der integrierten thermischen Abgasreinigung zum Brennen brennstoff­ haltiger Formlinge benutzt wird.4. Rotary hearth furnace according to claims 1-3, characterized in that the heating of the rotary hearth furnace is at least partially hot Exhaust gas from a tunnel kiln is heated according to the process Integrated thermal exhaust gas cleaning for burning fuel containing moldings is used.
DE19893916043 1989-05-17 1989-05-17 Rotary soil-decontaminating furnace - is annular with metal surface and adjacent loading and discharging point Ceased DE3916043A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19893916043 DE3916043A1 (en) 1989-05-17 1989-05-17 Rotary soil-decontaminating furnace - is annular with metal surface and adjacent loading and discharging point

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19893916043 DE3916043A1 (en) 1989-05-17 1989-05-17 Rotary soil-decontaminating furnace - is annular with metal surface and adjacent loading and discharging point

Publications (1)

Publication Number Publication Date
DE3916043A1 true DE3916043A1 (en) 1990-11-22

Family

ID=6380804

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19893916043 Ceased DE3916043A1 (en) 1989-05-17 1989-05-17 Rotary soil-decontaminating furnace - is annular with metal surface and adjacent loading and discharging point

Country Status (1)

Country Link
DE (1) DE3916043A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103014215A (en) * 2012-12-24 2013-04-03 重庆赛迪工业炉有限公司 Rotary hearth furnace

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103014215A (en) * 2012-12-24 2013-04-03 重庆赛迪工业炉有限公司 Rotary hearth furnace

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Legal Events

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