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EP1128130A1 - Housing for a treatment device for hot gases - Google Patents

Housing for a treatment device for hot gases Download PDF

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Publication number
EP1128130A1
EP1128130A1 EP01102089A EP01102089A EP1128130A1 EP 1128130 A1 EP1128130 A1 EP 1128130A1 EP 01102089 A EP01102089 A EP 01102089A EP 01102089 A EP01102089 A EP 01102089A EP 1128130 A1 EP1128130 A1 EP 1128130A1
Authority
EP
European Patent Office
Prior art keywords
insulating
housing according
plates
housing
supports
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.)
Granted
Application number
EP01102089A
Other languages
German (de)
French (fr)
Other versions
EP1128130B1 (en
Inventor
Klaus-Dieter Buck
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.)
Bilfinger Berger Industrial Services GmbH
Original Assignee
Rheinhold and Mahla AG
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 Rheinhold and Mahla AG filed Critical Rheinhold and Mahla AG
Publication of EP1128130A1 publication Critical patent/EP1128130A1/en
Application granted granted Critical
Publication of EP1128130B1 publication Critical patent/EP1128130B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J13/00—Fittings for chimneys or flues 
    • F23J13/02—Linings; Jackets; Casings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2213/00—Chimneys or flues
    • F23J2213/10—Linings
    • F23J2213/101—Fastening means therefor
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2213/00—Chimneys or flues
    • F23J2213/40—Heat insulation fittings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J2900/00—Special arrangements for conducting or purifying combustion fumes; Treatment of fumes or ashes
    • F23J2900/13021—Means for supporting the lining of conducting means, e.g. ducts or chimneys

Definitions

  • the invention relates to a housing of a treatment device for opposite Ambient temperature hot gases, especially flue gases.
  • Such housings for example of flue gas electrostatic precipitators, have Scaffold that is provided with a closed inner wall and that is provided on the outside with a very thick insulation.
  • the construction of this housing is extremely large. The reason is in that the scaffolding is arranged inside the housing and thus exposed to high temperatures.
  • the invention has for its object a housing of the aforementioned Art to design so that it with the least possible effort can be produced.
  • the essence of the invention is that the wall of the housing itself a relatively thin insulating wall is formed, which in turn is made of insulating plates exists that have an extremely low thermal conductivity.
  • the entire frame of the housing is in the area of the ambient temperature, so on the cold side; only that the hot gas leading interior facing inside of the insulating wall yourself on the hot side.
  • a housing of an electrostatic filter is used to clean hot flue gases, essentially from an external one Scaffold 1 and an internal insulating wall 2.
  • the scaffold 1 consists of vertical supports 3 and only indicated horizontal struts 4 and a roof 5 supporting rafters 6. At least the supports 3 and The rafters 6 are basically identical.
  • the insulating wall 2 not only forms the side and longitudinal walls, but also the roof skin.
  • Discharge bunkers 7 are formed in the bottom area, through which in the usual The way of cleaning the flue gases from these separated substances subtracted from.
  • This is according to the configuration shown on the left in FIG. 2 on the flange 8 - off-center to the web 9 of the carrier - a designed as a threaded bolt Holding bolt 10 welded on. It is located in the butt joint 11 between two adjacent insulating plates 12 forming part of the insulating wall 2, which - as is apparent from Fig. 2 - from one to the next neighboring Prop 3 extends.
  • a machine screw can also be used as the holding bolt 10 ' be provided, whose head 19 on the pressure plate 15th abuts, and which is inserted through a bore 20 in the flange 8 and is secured and secured from the outside by means of a nut 21.
  • the insulating plates 12 are also used as insulating panels are designated on their longitudinal edges with fillets 18 provided in which 11 insulating body 22 in the region of the butt joints with about elliptical or circular cross section are arranged, each between two in the longitudinal direction of the support 3 or the rafters 6 each other adjacent retaining bolt 10 each an insulating body 22 is arranged.
  • the insulating plates 12 each have their Outside a sheet 23 or 24 of preferably 0.8 mm in thickness.
  • the sheets 23, 24 are made of austenitic stainless steel in particular the inner sheet 23 facing the interior 14. Accordingly, at least the printing plates 15 and the threaded bolts 10, 10 'made of the same austenitic stainless steel Steel.
  • Insulating material 25 is arranged between the sheets 23, 24, with extremely high thermal insulation, for example ⁇ ⁇ 0.004 W / mK, whereby in any case applies to the heat conduction ⁇ ⁇ 0.01 W / mK.
  • a so-called insulation material 25 is used Super insulation, as in VDI HEAT ATLAS, calculation sheets for heat transfer, 5th edition 1988, VDI-VERLAG, Pages Ke 1 to Ke 17 is shown and described.
  • WDS Insulation material the main component of which is highly disperse silica is. It consists of microscopic balls with a Diameter from 5 - 30 nm. Heat transfer through solid-state conductivity is minimal.
  • WDS Insulation material the main component of which is highly disperse silica is. It consists of microscopic balls with a Diameter from 5 - 30 nm. Heat transfer through solid-state conductivity is minimal.
  • a microcellular structure is formed into plates. Arise tiny pore structures with a diameter of 0.1 micron. The Heat transfer through convection is achieved by trapping gas molecules minimized.
  • the infrared transmission is significantly reduced.
  • the heat transfer by radiation is also thereby minimized.
  • This as a plate between the sheets 23, 24 existing insulating material 25 therefore has an extremely low thermal conductivity.
  • the insulating plates 12 are all around on their outer edges, that is, on the grooves 18, each with connecting plates delimiting the groove 18 26 connected gas-tight by all-round welding, so that the insulating plates 12 have gas-tight closed interiors, in which the insulating material 25 is arranged. These interiors are also partially evacuated, which makes the overall thermal conductivity is reduced even further.
  • the connecting plates 26 exist also made of austenitic stainless steel with low thermal conductivity for example ⁇ ⁇ 20 W / mK. The thickness of the connecting plates 26 is reduced to preferably 0.3 mm to reduce heat conduction.
  • the insulating bodies 22 also have the insulating material as the actual insulating material 25 and an elastically flexible covering 27, for example made of glass silk, on.
  • the insulating bodies 22 are elastic overall compliant and absorb the thermal expansion of the insulating plates 12, and are nevertheless at all temperatures, i.e. in all expansion states the insulating plates 12 close to the connecting surfaces 26 of the grooves 18 on.
  • the Insulating wall 2 on the one hand, the complete insulation of the housing and on the other its wall.
  • the entire load-bearing structure, namely the scaffold 1 is located on the outside, that is to say in the vicinity 28 with ambient temperature. Only the pressure plates 15, the temperature resistant Seals 16, the assigned areas of the retaining bolts 10 or 10 'and the inner sheets 23 together with insulating material 25 are the exposed to high temperatures in the interior 14.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Building Environments (AREA)
  • Thermal Insulation (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)
  • Furnace Details (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Tunnel Furnaces (AREA)

Abstract

A housing of a device for the treatment of gases hotter than the ambient temperature, in particular flue gases, comprises an exterior frame made of supports. At the interior side of said frame an insulating wall is arranged which comprises an interior side metal sheet and an exterior side metal sheet, wherein insulating material having an extremely low heat conductivity is arranged between said metal sheets.

Description

Die Erfindung betrifft ein Gehäuse einer Behandlungseinrichtung für gegenüber Umgebungstemperatur heiße Gase, insbesondere Rauchgase.The invention relates to a housing of a treatment device for opposite Ambient temperature hot gases, especially flue gases.

Derartige Gehäuse, beispielsweise von Rauchgas-Elektrofiltern, weisen ein Gerüst auf, das mit einer geschlossenen Innenwand versehen ist und das auf seiner Außenseite mit einer sehr dicken Isolierung versehen ist. Der bauliche Aufwand dieser Gehäuse ist außerordentlich groß. Der Grund liegt darin, daß die Gerüste im Inneren des Gehäuses angeordnet sind und damit hohen Temperaturen ausgesetzt sind.Such housings, for example of flue gas electrostatic precipitators, have Scaffold that is provided with a closed inner wall and that is provided on the outside with a very thick insulation. The The construction of this housing is extremely large. The reason is in that the scaffolding is arranged inside the housing and thus exposed to high temperatures.

Der Erfindung liegt die Aufgabe zugrunde, ein Gehäuse der eingangs genannten Art so auszugestalten, daß es mit möglichst geringem Aufwand herstellbar ist.The invention has for its object a housing of the aforementioned Art to design so that it with the least possible effort can be produced.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruches 1 gelöst. Kern der Erfindung ist, daß die Wand des Gehäuses selber aus einer relativ dünnen Isolier-Wand gebildet ist, die wiederum aus Isolier-Platten besteht, die eine extrem geringe Wärmeleitfähigkeit aufweisen. Das gesamte Gerüst des Gehäuses befindet sich im Bereich der Umgebungstemperatur, also auf der kalten Seite; lediglich die dem das heiße Gas führenden Innenraum zugewandte Innenseite der Isolier-Wand befindet sich auf der heißen Seite. Durch die erfindungsgemäßen Maßnahmen lassen sich der bauliche Aufwand und damit die Kosten gegenüber den bekannten Lösungen erheblich reduzieren. Da sich das Gerüst auf der kalten Seite befindet, kann es erheblich leichter ausgestaltet werden. Eine Behandlungseinrichtung im Sinne der Erfindung können auch Rauchgaskanäle sein, in denen heiße Rauchgase lediglich transportiert werden.This object is achieved by the features of the claim 1 solved. The essence of the invention is that the wall of the housing itself a relatively thin insulating wall is formed, which in turn is made of insulating plates exists that have an extremely low thermal conductivity. The entire frame of the housing is in the area of the ambient temperature, so on the cold side; only that the hot gas leading interior facing inside of the insulating wall yourself on the hot side. Let through the measures according to the invention the construction effort and thus the costs compared to the known Reduce solutions significantly. Since the scaffold is on the cold side, it can be made much easier. A treatment facility In the sense of the invention, flue gas ducts can also be in where hot flue gases are only transported.

Zahlreiche vorteilhafte und zum Teil erfinderische Ausgestaltungen ergeben sich aus den Unteransprüchen.Numerous advantageous and partially inventive configurations result itself from the subclaims.

Weitere Merkmale, Vorteile und Einzelheiten der Erfindung ergeben sich im übrigen aus der nachfolgenden Beschreibung eines Ausführungsbeispieles anhand der Zeichnung. Es zeigt

Fig. 1
eine schematisierte perspektivische Darstellung eines Gehäuses eines Rauchgas-Elektrofilters,
Fig. 2
einen Teil-Querschnitt durch eine sich über zwei benachbarte Stützen erstreckende Isolier-Wand des Gehäuses,
Fig. 3
einen gegenüber Fig. 2 vergrößerten Querschnitt durch die Isolier-Wand im Bereich einer Stoßstelle von zwei Isolier-Platten und
Fig. 4
eine teilweise aufgebrochene Ansicht der Isolier-Wand gemäß dem Sichtpfeil IV in Fig. 2.
Further features, advantages and details of the invention result from the following description of an embodiment with reference to the drawing. It shows
Fig. 1
2 shows a schematic perspective illustration of a housing of a flue gas electrostatic filter,
Fig. 2
a partial cross section through an insulating wall of the housing extending over two adjacent supports,
Fig. 3
an enlarged cross-section compared to FIG. 2 through the insulating wall in the region of a joint of two insulating plates and
Fig. 4
a partially broken view of the insulating wall according to the arrow IV in Fig. 2nd

Wie aus Fig. 1 ersichtlich ist, besteht ein Gehäuse eines Elektrofilters, der zur Reinigung heißer Rauchgase dient, im wesentlichen aus einem außenliegenden Gerüst 1 und einer innenliegenden Isolier-Wand 2. Das Gerüst 1 besteht aus vertikalen Stützen 3 und nur angedeuteten horizontalen Streben 4 und ein Dach 5 tragenden Dach-Sparren 6. Zumindest die Stützen 3 und die Sparren 6 sind im Grundsatz identisch ausgebildet. Die Isolier-Wand 2 bildet nicht nur die Seiten- und Längswände, sondern auch die Dachhaut. Im Bodenbereich sind Austrags-Bunker 7 ausgebildet, durch die in üblicher Weise die bei der Reinigung der Rauchgase aus diesen abgetrennten Stoffe abgezogen werden.As can be seen from Fig. 1, there is a housing of an electrostatic filter is used to clean hot flue gases, essentially from an external one Scaffold 1 and an internal insulating wall 2. The scaffold 1 consists of vertical supports 3 and only indicated horizontal struts 4 and a roof 5 supporting rafters 6. At least the supports 3 and The rafters 6 are basically identical. The insulating wall 2 not only forms the side and longitudinal walls, but also the roof skin. Discharge bunkers 7 are formed in the bottom area, through which in the usual The way of cleaning the flue gases from these separated substances subtracted from.

Wie insbesondere aus den Fig. 2 und 3 hervorgeht, bestehen die Stützen 3 und die Dach-Sparren 6 aus T- oder Doppel-T-Trägern an deren der Isolier-Wand 2 zugewandtem Flansch 8 die Isolier-Wand 2 befestigt ist. Hierzu ist gemäß der in Fig. 2 links dargestellten Ausgestaltung am Flansch 8 - außermittig zum Steg 9 des Trägers - ein als Gewindebolzen ausgebildeter Haltebolzen 10 angeschweißt. Er befindet sich in der Stoßfuge 11 zwischen zwei benachbarten, Teil der Isolier-Wand 2 bildenden Isolier-Platten 12, die sich - wie aus Fig. 2 hervorgeht - jeweils von einer zur nächsten benachbarten Stütze 3 erstreckt. Wie Fig. 4 entnehmbar ist, sind eine größere Zahl solcher Haltebolzen 10 im Abstand voneinander über die Länge einer Stütze 3 bzw. eines Sparrens 6 angebracht. Zwischen dem Flansch 8 und der zugewandten Seite der Isolier-Platten 12 ist eine nichttemperaturfeste Dichtung 13 angeordnet, die dicht am Flansch 8 und den beiden an der Stoßfuge 11 aneinanderstoßende Isolier-Platten 12 und dicht am Haltebolzen 10 anliegt. Sie kann als Flachdichtung oder als Lippendichtung ausgebildet sein.As can be seen in particular from FIGS. 2 and 3, the supports 3 and the roof rafters 6 made of T or double T beams on the insulating wall 2 facing flange 8 the insulating wall 2 is attached. This is according to the configuration shown on the left in FIG. 2 on the flange 8 - off-center to the web 9 of the carrier - a designed as a threaded bolt Holding bolt 10 welded on. It is located in the butt joint 11 between two adjacent insulating plates 12 forming part of the insulating wall 2, which - as is apparent from Fig. 2 - from one to the next neighboring Prop 3 extends. As can be seen in Fig. 4, are larger Number of such retaining bolts 10 at a distance from one another over the length of one Support 3 or a rafter 6 attached. Between the flange 8 and the facing side of the insulating plates 12 is not temperature-resistant Seal 13 arranged close to the flange 8 and the two on the Butt joint 11 abutting insulating plates 12 and close to the retaining bolt 10 is present. It can be designed as a flat seal or as a lip seal his.

An der dem Innenraum 14 des Gehäuses zugewandten Seite ist eine sich über die volle Länge der Stütze 3 bzw. des Sparrens 6 erstreckende, als Flachprofil ausgebildete Druckplatte 15 auf die Haltebolzen 10 aufgesetzt, zwischen der und der dem Innenraum 14 zugewandten Fläche der Isolier-Platten 12 eine ebenfalls die Stoßfugen 11 überdeckende temperaturbeständige Dichtung 16 angeordnet ist, die auch dichtend am Haltebolzen 10 anliegt. Diese Dichtung 16 kann - wie Fig. 2 und 3 erkennen lassen - als Lippendichtung ausgebildet sein. Diese Dichtung 16 ist gegen die Temperaturen beständig, die im Innenraum 14 und in der zugewandten Seite der Isolier-Platten 12 auftreten können. Die Isolier-Platten 12 und die Dichtungen 13, 16 werden bei der Ausgestaltung mit dem Haltebolzen 10 über eine vom Innenraum 14 auf den jeweiligen Haltebolzen 10 aufgeschraubte Mutter, beispielsweise eine Hutmutter 17, dichtend verspannt und gehalten.On the side facing the interior 14 of the housing is one extending over the full length of the support 3 or the rafters 6, as Flat profile formed pressure plate 15 placed on the retaining bolt 10, between the surface of the insulating plates facing the interior 14 12 also a temperature-resistant covering the butt joints 11 Seal 16 is arranged, which also bears sealingly on the retaining bolt 10. This seal 16 can - as can be seen in FIGS. 2 and 3 - as a lip seal be trained. This seal 16 is against the temperatures resistant in the interior 14 and in the facing side of the insulating panels 12 can occur. The insulating plates 12 and the seals 13, 16 are in the embodiment with the retaining bolt 10 via a screwed from the interior 14 onto the respective retaining bolt 10 Mother, for example a cap nut 17, tightly clamped and held.

Wie aus Fig. 2 rechts hervorgeht, kann als Haltebolzen 10' auch eine Maschinenschraube vorgesehen sein, deren Kopf 19 an der Druckplatte 15 anliegt, und die durch eine Bohrung 20 im Flansch 8 hindurchgesteckt und von außen mittels einer Mutter 21 gesichert und befestigt wird.As can be seen from the right in FIG. 2, a machine screw can also be used as the holding bolt 10 ' be provided, whose head 19 on the pressure plate 15th abuts, and which is inserted through a bore 20 in the flange 8 and is secured and secured from the outside by means of a nut 21.

Wie Fig. 3 entnehmbar ist, sind die Isolier-Platten 12,die auch als Isolier-Paneele bezeichnet werden, an ihren Längskanten mit Auskehlungen 18 versehen, in denen im Bereich der Stoßfugen 11 Isolierkörper 22 mit etwa elliptischem oder kreisförmigem Querschnitt angeordnet sind, wobei jeweils zwischen zwei in Längsrichtung der Stütze 3 oder des Sparrens 6 einander benachbarten Haltebolzen 10 je ein Isolierkörper 22 angeordnet ist.As can be seen in FIG. 3, the insulating plates 12 are also used as insulating panels are designated on their longitudinal edges with fillets 18 provided in which 11 insulating body 22 in the region of the butt joints with about elliptical or circular cross section are arranged, each between two in the longitudinal direction of the support 3 or the rafters 6 each other adjacent retaining bolt 10 each an insulating body 22 is arranged.

Wie aus Fig. 3 hervorgeht, weisen die Isolier-Platten 12 jeweils an ihren Außenseiten ein Blech 23 bzw. 24 von vorzugsweise 0,8 mm Dicke auf. Die Bleche 23, 24 bestehen aus austenitischem rostfreien Stahl und zwar insbesondere das dem Innenraum 14 zugewandte innenseitige Blech 23. Entsprechend sollten naturgemäß auch mindestens die Druckplatten 15 und die Gewindebolzen 10, 10' aus gleichartigem austenitischen rostfreien Stahl bestehen. Zwischen den Blechen 23, 24 ist Isoliermaterial 25 angeordnet, das über eine extrem hohe Wärmedämmung von beispielsweise λ ≈ 0,004 W/mK verfügt, wobei für die Wärmeleitung auf jeden Fall gilt λ ≤ 0,01 W/mK. Als Isoliermaterial 25 kommt beispielsweise eine sogenannte Superisolation in Betracht, wie sie im VDI-WÄRMEATLAS, Berechnungsblätter für den Wärmeübergang, 5. Auflage 1988, VDI-VERLAG, Seiten Ke 1 bis Ke 17 dargestellt und beschrieben ist. Insbesondere kommt als Isoliermaterial ein von der Wacker-Chemie GmbH unter der Bezeichnung WDS hergestellter und vertriebener mikroporöser thermischer Dämmstoff in Betracht, dessen Hauptkomponente hochdisperse Kieselsäure ist. Sie besteht aus mikroskopisch kleinen Kugeln mit einem Durchmesser von 5 - 30 nm. Die Wärmeübertragung durch Festkörperleitfähigkeit ist dadurch minimal. Beim Pressen dieser hochdispersen Kieselsäure zu Platten wird ein mikrocellulares Gefüge gebildet. Es entstehen winzige Porenstrukturen mit einem Durchmesser von 0,1 Mikron. Die Wärmeübertragung durch Konvektion wird durch das Einsperren von Gasmolekülen minimiert. Durch Zumischen von Infrarot-Trübungsmitteln zur mikroporösen Kieselsäure wird die Infrarot-Durchlässigkeit deutlich verringert. Die Wärmeübertragung durch Strahlung wird dadurch ebenfalls minimiert. Dieses als Platte zwischen den Blechen 23, 24 vorhandene Isoliermaterial 25 weist daher eine extrem geringe Wärmeleitfähigkeit auf.As is apparent from Fig. 3, the insulating plates 12 each have their Outside a sheet 23 or 24 of preferably 0.8 mm in thickness. The sheets 23, 24 are made of austenitic stainless steel in particular the inner sheet 23 facing the interior 14. Accordingly, at least the printing plates 15 and the threaded bolts 10, 10 'made of the same austenitic stainless steel Steel. Insulating material 25 is arranged between the sheets 23, 24, with extremely high thermal insulation, for example λ ≈ 0.004 W / mK, whereby in any case applies to the heat conduction λ ≤ 0.01 W / mK. For example, a so-called insulation material 25 is used Super insulation, as in VDI HEAT ATLAS, calculation sheets for heat transfer, 5th edition 1988, VDI-VERLAG, Pages Ke 1 to Ke 17 is shown and described. In particular comes from Wacker-Chemie GmbH as insulation material microporous thermal manufactured and sold under the name WDS Insulation material, the main component of which is highly disperse silica is. It consists of microscopic balls with a Diameter from 5 - 30 nm. Heat transfer through solid-state conductivity is minimal. When pressing this highly disperse silica a microcellular structure is formed into plates. Arise tiny pore structures with a diameter of 0.1 micron. The Heat transfer through convection is achieved by trapping gas molecules minimized. By adding infrared opacifiers to the microporous silica, the infrared transmission is significantly reduced. The heat transfer by radiation is also thereby minimized. This as a plate between the sheets 23, 24 existing insulating material 25 therefore has an extremely low thermal conductivity.

Die Isolier-Platten 12 sind rundum an ihren Außenkanten, also an den Auskehlungen 18, jeweils mit die Auskehlung 18 begrenzenden Verbindungsblechen 26 mittels rundum laufender Verschweißungen gasdicht verbunden, so daß die Isolier-Platten 12 gasdicht geschlossene Innenräume aufweisen, in denen das Isoliermaterial 25 angeordnet ist. Diese Innenräume sind zusätzlich noch teilevakuiert, wodurch die Wärmeleitfähigkeit insgesamt noch weiter herabgesetzt wird. Die Verbindungsbleche 26 bestehen ebenfalls aus austenitischem rostfreien Stahl mit geringer Wärmeleitfähigkeit von beispielsweise λ< 20 W/mK. Die Dicke der Verbindungsbleche 26 ist zur Reduktion der Wärmeleitung minimiert auf vorzugsweise 0,3 mm.The insulating plates 12 are all around on their outer edges, that is, on the grooves 18, each with connecting plates delimiting the groove 18 26 connected gas-tight by all-round welding, so that the insulating plates 12 have gas-tight closed interiors, in which the insulating material 25 is arranged. These interiors are also partially evacuated, which makes the overall thermal conductivity is reduced even further. The connecting plates 26 exist also made of austenitic stainless steel with low thermal conductivity for example λ <20 W / mK. The thickness of the connecting plates 26 is reduced to preferably 0.3 mm to reduce heat conduction.

Die Isolierkörper 22 weisen als eigentlichen Isolierstoff auch das Isoliermaterial 25 und eine elastisch nachgiebige Umhüllung 27, beispielsweise aus Glasseide, auf. Die Isolierkörper 22 sind dadurch insgesamt elastisch nachgiebig und fangen die Wärmedehnungen der Isolier-Platten 12, auf und liegen trotzdem bei allen Temperaturen, d.h. bei allen Ausdehnungszuständen der Isolier-Platten 12 dicht an den Verbindungsflächen 26 der Auskehlungen 18 an.The insulating bodies 22 also have the insulating material as the actual insulating material 25 and an elastically flexible covering 27, for example made of glass silk, on. As a result, the insulating bodies 22 are elastic overall compliant and absorb the thermal expansion of the insulating plates 12, and are nevertheless at all temperatures, i.e. in all expansion states the insulating plates 12 close to the connecting surfaces 26 of the grooves 18 on.

Die Befestigung an den Streben 4 erfolgt - wie vorstehend - für die Stützen 3 und Sparren 6 beschrieben.The attachment to the struts 4 - as above - for the supports 3 and rafters 6 described.

Wie sich aus der vorstehenden Beschreibung anschaulich ergibt, bildet die Isolier-Wand 2 zum einen die vollständige Isolierung des Gehäuses und zum anderen dessen Wand. Die gesamte tragende Konstruktion, nämlich das Gerüst 1 befindet sich auf der Außenseite, also in der Umgebung 28 mit Umgebungstemperatur. Lediglich die Druckplatten 15, die temperaturbeständigen Dichtungen 16, die zugeordneten Bereiche der Haltebolzen 10 bzw. 10' und die innenseitigen Bleche 23 samt Isoliermaterial 25 sind den hohen Temperaturen im Innenraum 14 ausgesetzt.As can clearly be seen from the above description, the Insulating wall 2 on the one hand, the complete insulation of the housing and on the other its wall. The entire load-bearing structure, namely the scaffold 1 is located on the outside, that is to say in the vicinity 28 with ambient temperature. Only the pressure plates 15, the temperature resistant Seals 16, the assigned areas of the retaining bolts 10 or 10 'and the inner sheets 23 together with insulating material 25 are the exposed to high temperatures in the interior 14.

Claims (12)

Gehäuse einer Behandlungseinrichtung für gegenüber Umgebungstemperatur heiße Gase, insbesondere Rauchgase, mit einem in der Umgebung (28) liegenden Gerüst (1) aus Stützen (3). mit einer an der Innenseite des Gerüstes (1) angeordneten, einen Innenraum (14) umschließenden Isolier-Wand (2), die aus einem innenseitigen Blech (23), einem außenseitigen Blech (24) und zwischen den Blechen (23, 24) angeordnetem Isoliermaterial (25) von äußerst geringer Wärmeleitfähigkeit besteht.Housing of a treatment device for gases that are hot at ambient temperature, in particular flue gases, with a framework (1) of supports (3) lying in the vicinity (28). with an insulating wall (2) arranged on the inside of the scaffold (1) and enclosing an interior space (14) an inner sheet (23), an outside sheet (24) and between the sheets (23, 24) arranged insulating material (25) of extremely low thermal conductivity consists. Gehäuse nach Anspruch 1, dadurch gekennzeichnet,
daß die Isolier-Wand (2) aus Isolier-Platten (12) gebildet ist, die im Raster der Stützen (3) angeordnet sind.Housing according to claim 1, characterized in
that the insulating wall (2) is formed from insulating plates (12) which are arranged in the grid of the supports (3). Gehäuse nach Anspruch 1 oder 2, dadurch gekennzeichnet,
daß die Isolier-Platten (12) gegen Flansche (8) der Stützen (3) mit ihrem außenseitigen Blech (24) abgestützt sind.Housing according to claim 1 or 2, characterized in
that the insulating plates (12) are supported against flanges (8) of the supports (3) with their outside sheet (24). Gehäuse nach Anspruch 3, dadurch gekennzeichnet;
daß zwischen dem außenseitigen Blech (24) und dem Flansch (8) eine Dichtung (13) angeordnet ist.Housing according to claim 3, characterized;
that a seal (13) is arranged between the outside sheet (24) and the flange (8). Gehäuse nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß an der jeweiligen Stütze (3) in deren Längsrichtung im Abstand voneinander Haltebolzen (10, 10') gehalten sind, die in der Stoßfuge (11) zwischen zwei benachbarten Isolier-Platten (12) angeordnet sind und daß von dem Haltebolzen (10, 10') dem Innenraum (14) zugewandte, die Isolier-Platten (12) gegen die Stützen (3) pressende Druckplatten (15) gehalten werden.Housing according to one of claims 1 to 4, characterized in that holding bolts (10, 10 ') are held on the respective support (3) in their longitudinal direction at a distance from one another and are located in the butt joint (11) between two adjacent insulating plates ( 12) are arranged and that the retaining bolts (10, 10 ') facing the interior (14) hold the insulating plates (12) against the supports (3) pressing plates (15). Gehäuse nach Anspruch 5, dadurch gekennzeichnet,
daß zwischen den Druckplatten (15) und den innenseitigen Blechen (23) temperaturbeständige Dichtungen (16) angeordnet sind.Housing according to claim 5, characterized in
that temperature-resistant seals (16) are arranged between the pressure plates (15) and the inner sheets (23). Gehäuse nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Isolier-Platten (12) im Bereich ihrer Stoßfugen (11) mit Auskehlungen (18) versehen sind, wobei in den beiden einander zugewandten Auskehlungen (18) zweier an der Stoßfuge (11) aneinander stoßender Isolier-Platten (12) die Auskehlungen (18) zumindest im wesentlichen ausfüllende Isolier-Körper (22) angeordnet sind.Housing according to one of Claims 1 to 6, characterized in that the insulating plates (12) are provided with grooves (18) in the region of their butt joints (11), two in the mutually facing grooves (18) at the butt joint ( 11) abutting insulating plates (12), the grooves (18) at least substantially filling insulating bodies (22) are arranged. Gehäuse nach Anspruch 7, dadurch gekennzeichnet,
daß die Isolierkörper (22) aus Isoliermaterial (25) und einer Umhüllung gebildet sind.Housing according to claim 7, characterized in
that the insulating body (22) made of insulating material (25) and an envelope. Gehäuse nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Bleche (23, 24) einer Isolier-Platte (12) umlaufend mit einem Verbindungsblech (26) gasdicht verbunden sind.Housing according to one of claims 1 to 8, characterized in that the metal sheets (23, 24) of an insulating plate (12) are connected gas-tight all around with a connecting plate (26). Gehäuse nach Anspruch 9, dadurch gekennzeichnet,
daß die Isolier-Platten (12) teilevakuiert sind.Housing according to claim 9, characterized in
that the insulating plates (12) are partially evacuated. Gehäuse nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß das Isoliermaterial (25) im wesentlichen durch eine mikroporöse Kieselsäure gebildet ist.Housing according to one of claims 1 to 10, characterized in that the insulating material (25) is essentially formed by a microporous silica. Gehäuse nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß das Isoliermaterial (25) eine Wärmeleitfähigkeit λ, wofür gilt, λ ≤ 0,01 W/mK, aufweist.Housing according to one of claims 1 to 11, characterized in that the insulating material (25) has a thermal conductivity λ, for which λ ≤ 0.01 W / mK.
EP01102089A 2000-02-21 2001-01-31 Housing for a treatment device for hot gases Expired - Lifetime EP1128130B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10007844A DE10007844A1 (en) 2000-02-21 2000-02-21 Housing of a treatment device for gases hot at ambient temperature
DE10007844 2000-02-21

Publications (2)

Publication Number Publication Date
EP1128130A1 true EP1128130A1 (en) 2001-08-29
EP1128130B1 EP1128130B1 (en) 2005-03-23

Family

ID=7631705

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01102089A Expired - Lifetime EP1128130B1 (en) 2000-02-21 2001-01-31 Housing for a treatment device for hot gases

Country Status (4)

Country Link
US (1) US6695016B2 (en)
EP (1) EP1128130B1 (en)
AT (1) ATE291723T1 (en)
DE (2) DE10007844A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050247365A1 (en) * 2004-05-08 2005-11-10 Schwartz Ben B Sectional heat insulating jacket

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DE3411924A1 (en) * 1984-03-30 1985-10-10 G + H Montage Gmbh, 6700 Ludwigshafen Vibration-resistant heat-insulating lining made of tile elements and a tile element for this purpose
EP0342661A1 (en) * 1988-05-18 1989-11-23 Wacker-Chemie Gmbh Thermal insulation body based on a compressed microporous thermally insulating product with a coating based on metals
DE3940381A1 (en) * 1989-12-06 1991-06-13 Pks Engineering Duct for gas turbine exhaust gases - consists of outer and inner wall, insulating layer and cover plates and rails
DE4225448A1 (en) * 1992-07-31 1994-02-03 Janich Gmbh & Co Hot gas duct with inner heat insulation layer - has individual heat insulation elements enclosed by covers to form easily fitted cassettes
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Also Published As

Publication number Publication date
EP1128130B1 (en) 2005-03-23
DE50105662D1 (en) 2005-04-28
DE10007844A1 (en) 2001-08-23
US6695016B2 (en) 2004-02-24
US20010015140A1 (en) 2001-08-23
ATE291723T1 (en) 2005-04-15

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