EP0211399B1 - Manufacturing process of a gastight and insulating lining for a detached chimney - Google Patents

Manufacturing process of a gastight and insulating lining for a detached chimney Download PDF

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Publication number
EP0211399B1
EP0211399B1 EP86110553A EP86110553A EP0211399B1 EP 0211399 B1 EP0211399 B1 EP 0211399B1 EP 86110553 A EP86110553 A EP 86110553A EP 86110553 A EP86110553 A EP 86110553A EP 0211399 B1 EP0211399 B1 EP 0211399B1
Authority
EP
European Patent Office
Prior art keywords
lining
chimney
laminate
thermal insulation
gastight
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
EP86110553A
Other languages
German (de)
French (fr)
Other versions
EP0211399A1 (en
Inventor
Jan Dr. Dück
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.)
Hoechst AG
Original Assignee
Hoechst 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 Hoechst AG filed Critical Hoechst AG
Priority to AT86110553T priority Critical patent/ATE49446T1/en
Publication of EP0211399A1 publication Critical patent/EP0211399A1/en
Application granted granted Critical
Publication of EP0211399B1 publication Critical patent/EP0211399B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H12/00—Towers; Masts or poles; Chimney stacks; Water-towers; Methods of erecting such structures
    • E04H12/28—Chimney stacks, e.g. free-standing, or similar ducts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S138/00—Pipes and tubular conduits
    • Y10S138/02—Glass fiber

Definitions

  • the invention relates to a method for producing a gas-tight, thermally insulated lining from masonry or concrete resistant to aggressive media, such as acidic condensates and / or dissolved salts, for a free-standing power plant and industrial chimney, the lining of which is separated from the shaft by an accessible room.
  • the lining consists of acid-resistant masonry made of ceramic stones with acid-resistant putty joints.
  • the lining is divided into individual sections, so-called shots, one speaks of floor lining, which is separated from the load-bearing shaft by an accessible space.
  • a thermal insulation layer made of approx. 50 to 60 mm thick, closed-cell foam glass.
  • a safety gap of 10 to 20 mm is left between the thermal insulation layer and the masonry.
  • the invention solves the problem in that a laminate of glass fiber and multi-component reaction resin and a thermal insulation layer is applied to the outside of the known lining.
  • Chimney belts can be arranged between the laminate and the thermal insulation layer.
  • the multi-component reactive resins are e.g. Phenolic, furan, epoxy, unsaturated polyester or polyurethane resins.
  • the laminate can be shrunk onto the outside of the lining by hardening shrinkage.
  • the laminate of glass fiber and multi-component reaction resin is applied seamlessly on the outside of the feed, also in the area of the feed joints and the feed contact areas.
  • the laminate can be designed in the form of an expansion loop.
  • Bellows-type intermediate pieces made of chemically and thermally resistant, flexible plastic, e.g. Fluoroplastic can also be incorporated into the laminate.
  • the laminate can be applied to the reinforced concrete support structure under the lining contact areas, if necessary via an intermediate layer.
  • the chimney belts can be made of steel or stainless steel.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Laminated Bodies (AREA)
  • Chimneys And Flues (AREA)
  • Thermal Insulation (AREA)

Abstract

In this process a laminate of glass fiber and multicomponent reaction resin, and on top of this a layer of thermal insulation, is placed on the outer side of the stack lining composed of masonry or concrete which is resistant to aggressive media.

Description

Gegenstand der Erfindung ist ein Verfahren zum Herstellen eines gasdichten, wärmegedämmten Futters aus gegen aggressive Medien, wie saure Kondensate und/oder gelöste Salze beständigem Mauerwerk oder Beton für einen freistehenden Kraftwerks-und Industrieschornstein, dessen Futter vom Schaft durch einen begehbaren Raum getrennt ist.The invention relates to a method for producing a gas-tight, thermally insulated lining from masonry or concrete resistant to aggressive media, such as acidic condensates and / or dissolved salts, for a free-standing power plant and industrial chimney, the lining of which is separated from the shaft by an accessible room.

Die Begrenzung zulässiger Emissionen aus Kraftwerks- und Industrieschornsteinen erfordert zusätzliche Reinigungsmaßnahmen, durch die die Beschaffenheit der Abgase gegenüber früher erheblich verändert wird. Für Wärmekraftwerke, insbesondere solche, die mit Kohle befeuert werden, hat sich die Naßreinigung mit Kalkmilch am besten bewährt. Durch sie ergeben sich jedoch in den nachgeordneten Schornsteinen völlig andere Betriebsbedingungen, die entsprechende Änderungen der Futterkonstruktion notwendig machen. Durch die Naßreinigung erhöht sich der Gehalt an Wasserdampf und verringert sich die Temperatur der in den Schornstein eingeleiteten Rauchgase. Der nicht entfernte Restgehalt an Schadstoffen kann saure Kondensate bilden. Außerdem enthält das Rauchgas mitgerissene salzhaltige Wassertröpfchen aus dem Waschprozeß. Hinter Naßwäschen werden daher meist Schornsteine mit gemauerten Futtern verwendet, wie sie aus der FR-A-2 406 710 bekannt sind. Das Futter besteht aus säurebeständigem Mauerwerk aus keramischen Formsteinen mit säurebeständigen Kittfugen. Bei größeren Schornsteinen ist das Futter in einzelne Abschnitte, sogenannte Schüsse, unterteilt, man spricht von Etagenfuttern, die vom tragenden Schaft durch einen begehbaren Zwischenraum getrennt sind. Zur Wärmedämmung kann ein solches Futter auf der Außenseite mit einer Wärmedämmschicht aus ca. 50 bis 60 mm dickem, geschlossenzelligem Schaumglas (Foamglas) versehen sein. Zwischen Wärmedämmschicht und Mauerwerk ist ein Sicherheitsspalt von 10 bis 20 mm belassen.Limiting permissible emissions from power plant and industrial chimneys requires additional cleaning measures that significantly change the quality of the exhaust gases compared to the past. For thermal power plants, especially those that are fired with coal, wet cleaning with milk of lime has proven itself best. However, they result in completely different operating conditions in the downstream chimneys, which make corresponding changes to the lining construction necessary. Wet cleaning increases the water vapor content and reduces the temperature of the flue gases introduced into the chimney. The residual content of pollutants that has not been removed can form acidic condensates. The flue gas also contains entrained saline water droplets from the washing process. Chimneys with masonry linings, as are known from FR-A-2 406 710, are therefore usually used behind wet washes. The lining consists of acid-resistant masonry made of ceramic stones with acid-resistant putty joints. In the case of larger chimneys, the lining is divided into individual sections, so-called shots, one speaks of floor lining, which is separated from the load-bearing shaft by an accessible space. For thermal insulation, such a lining can be provided on the outside with a thermal insulation layer made of approx. 50 to 60 mm thick, closed-cell foam glass. A safety gap of 10 to 20 mm is left between the thermal insulation layer and the masonry.

Das keramische Futter ist weder flüssigkeits- noch gasdicht. Obwohl das Schaumglas selbst völlig dicht ist, sind durchlässige Stellen im Bereich der Kittfugen und der Futteraufstandsflächen, in Verbindung mit dem Sicherheitsspalt, nicht völlig zu vermeiden. Noch kritischer ist die Dichtigkeit der Verbindung zwischen den einzelnen Schüssen des Futters. Die Abdichtung des Dilatationsspaltes ist praktisch noch ungelöst. Der Erfindung liegt daher die Aufgabe zugrunde, ein Verfahren zum Herstellen eines säurebeständigen Schornsteinfutters zur Verfügung zu stellen, das wärmedämmend sowie flüssigkeits- und gasdicht ist.The ceramic lining is neither liquid-tight nor gas-tight. Although the foam glass itself is completely sealed, permeable areas in the area of the putty joints and the contact areas for the fodder, in connection with the safety gap, cannot be completely avoided. The tightness of the connection between the individual shots of the feed is even more critical. The sealing of the dilatation gap is still practically undissolved. The invention is therefore based on the object of providing a method for producing an acid-resistant chimney lining which is heat-insulating and liquid-tight and gas-tight.

Die Erfindung löst die Aufgabe dadurch, daß auf das an sich bekannte Futter außenseitig ein Laminat aus Glasfaser und Mehrkomponenten-Reaktionsharz und darauf eine Wärmedämmschicht aufgebracht wird.The invention solves the problem in that a laminate of glass fiber and multi-component reaction resin and a thermal insulation layer is applied to the outside of the known lining.

Zwischen Laminat und Wärmedämmschicht können Schornsteinbänder angeordnet werden.Chimney belts can be arranged between the laminate and the thermal insulation layer.

Gegenüber den bekannten Schornsteinfuttern bietet die Erfindung folgende Vorteile:

  • - Das durchgehend flüssigkeits- und gasdichte Laminat verhindert bei allen möglichen Betriebszuständen das Eindringen von Abgasen in den begehbaren Zwischenraum, auch im Bereich der Futterstöße.
  • - Die Erfindung ermöglicht den Einsatz preiswerter und einfach zu montierender Dämmstoffe, wie Glas- oder Mineralwolle anstelle des aufwendigen Schaumglases.
  • - Durch entsprechenden Gehalt an Glasfasern bzw. Rovings kann die Laminatschicht einem inneren Gasüberdruck angepaßt werden. Dies erlaubt höhere Abgasgeschwindigkeiten, somit geringere Futterrohrdurchmesser und senkt so Eöe Erstellungskosten, kann jedoch auch bei einer eventuell notwendigen Ausrüstung eines alten Schornsteins mit einem neuen Futter, z.B. wegen nachträglichem Einbau einer Rauchgaswäsche, von Bedeutung sein.
  • - Durch die lastverteilenden Schornsteinbänder kann eine, z.B. durch Temperaturwechsel hervorgerufene Rißbildung verhindert werden.
The invention offers the following advantages over the known chimney liners:
  • - The all-liquid and gas-tight laminate prevents exhaust gases from entering the accessible space in all possible operating conditions, even in the area of the feed joints.
  • - The invention enables the use of inexpensive and easy-to-install insulation materials, such as glass or mineral wool instead of the complex foam glass.
  • - By appropriate content of glass fibers or rovings, the laminate layer can be adapted to an internal gas overpressure. This allows higher exhaust gas velocities, thus lower casing diameters and thus reduces production costs, but can also be important if an old chimney may need to be fitted with a new chimney, e.g. due to the subsequent installation of a flue gas scrubber.
  • - The load-distributing chimney belts can prevent cracking caused, for example, by temperature changes.

Als Mehrkomponenten-Reaktionsharze kommen z.B. Phenol-, Furan-, Epoxid-, ungestättigte Polyester- oder Polyurethanharze in Betracht. Durch geeignete Wahl von Harz und Härter kann das Laminat durch Härtungsschwinden auf die Außenseite des Futters aufgeschrumpft werden. Das Laminat aus Glasfaser und Mehrkomponenten-Reaktionsharz wird auf der Außenseite des Futters fugenlos auch im Bereich der Futterstöße und der Futteraufstandsflächen aufgebracht. Im Bereich des Dilatationsspaltes kann das Laminat in Form einer Dehnungsschlaufe ausgebildet sein. Balgartige Zwischenstücke aus chemisch und thermisch gut beständigen, flexiblem Kunststoff, z.B. Fluorkunststoff, können ebenfalls in das Laminat eingearbeitet werden. Unter den Futteraufstandsflächen kann das Laminat, ggf. über eine Zwischenschicht, auf die Stahlbetontragkonstruktion aufgebracht werden. Die Schornsteinbänder können aus Stahl oder Edelstahl sein.The multi-component reactive resins are e.g. Phenolic, furan, epoxy, unsaturated polyester or polyurethane resins. With a suitable choice of resin and hardener, the laminate can be shrunk onto the outside of the lining by hardening shrinkage. The laminate of glass fiber and multi-component reaction resin is applied seamlessly on the outside of the feed, also in the area of the feed joints and the feed contact areas. In the area of the dilatation gap, the laminate can be designed in the form of an expansion loop. Bellows-type intermediate pieces made of chemically and thermally resistant, flexible plastic, e.g. Fluoroplastic can also be incorporated into the laminate. The laminate can be applied to the reinforced concrete support structure under the lining contact areas, if necessary via an intermediate layer. The chimney belts can be made of steel or stainless steel.

Claims (2)

1. A process for the construction of a gas pressure-tight and thermally insulated lining of masonry or concrete, which is resistant to aggressive media, for a free-standing power station and industrial stack the lining of which is separated from the shaft by an intervening access space, wherein a laminate of glass fiber and multicomponent reactive resin, and on top of this a layer of thermal insulation, is placed on the outer side of the prior art lining.
2. The process as claimed in claim 1, wherein stack ties are provided between the laminate and the layer of thermal insulation.
EP86110553A 1985-08-09 1986-07-30 Manufacturing process of a gastight and insulating lining for a detached chimney Expired - Lifetime EP0211399B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86110553T ATE49446T1 (en) 1985-08-09 1986-07-30 METHOD OF MAKING A GAS-TIGHT, THERMALLY INSULATED LINING FOR A FREE-STANDING CHIMNEY.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3528653 1985-08-09
DE19853528653 DE3528653A1 (en) 1985-08-09 1985-08-09 METHOD FOR PRODUCING A GAS-SEAL, HEAT-INSULATED LINING FOR A FREE-STANDING CHIMNEY

Publications (2)

Publication Number Publication Date
EP0211399A1 EP0211399A1 (en) 1987-02-25
EP0211399B1 true EP0211399B1 (en) 1990-01-10

Family

ID=6278150

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86110553A Expired - Lifetime EP0211399B1 (en) 1985-08-09 1986-07-30 Manufacturing process of a gastight and insulating lining for a detached chimney

Country Status (4)

Country Link
US (1) US4745851A (en)
EP (1) EP0211399B1 (en)
AT (1) ATE49446T1 (en)
DE (2) DE3528653A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102557037B (en) * 2011-12-26 2013-06-19 湖南南方搏云新材料有限责任公司 Heat-insulation corrosion-resistant structure of hydrogenation furnace

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3367075A (en) * 1966-06-24 1968-02-06 Pennsalt Chemical Corp Corrosion-proof liner for chimney outer wall
GB1177258A (en) * 1967-10-03 1970-01-07 F E Beaumont Ltd Improvements in and relating to Sheathed Chimneys
FR2007720A1 (en) * 1968-05-02 1970-01-09 Betonwerk Munchen
GB1265216A (en) * 1969-07-11 1972-03-01
DE2615603A1 (en) * 1976-04-09 1977-10-20 Max Venus Heat insulating cladded pipe insert for chimney - has laminar milled insulating mat of elastic mineral or glass fibres
NL7711621A (en) * 1977-10-22 1979-04-24 Hoogovens Ijmuiden Bv CHIMNEY CONSTRUCTION.
DE2841570C3 (en) * 1978-09-23 1982-03-18 Karrena GmbH, 4000 Düsseldorf chimney
DE3136244A1 (en) * 1980-08-09 1983-03-31 Perlite-Dämmstoff-GmbH & Co, Beratung und Vertrieb, 4600 Dortmund Process for producing a chimney
DE3147371C2 (en) * 1981-11-30 1983-12-08 Friedrich Schaper Industriebau GmbH, 3300 Braunschweig Chimneys, in particular for industrial plants
US4519303A (en) * 1983-03-24 1985-05-28 Crown Union, Inc. Chimney lining system including frame-supported membrane

Also Published As

Publication number Publication date
DE3528653A1 (en) 1987-02-12
ATE49446T1 (en) 1990-01-15
US4745851A (en) 1988-05-24
DE3668209D1 (en) 1990-02-15
EP0211399A1 (en) 1987-02-25

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