EP0022035B1 - Procédé et dispositif de dépollution dans une installation de fabrication d'un matelas de fibres - Google Patents

Procédé et dispositif de dépollution dans une installation de fabrication d'un matelas de fibres Download PDF

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Publication number
EP0022035B1
EP0022035B1 EP80400998A EP80400998A EP0022035B1 EP 0022035 B1 EP0022035 B1 EP 0022035B1 EP 80400998 A EP80400998 A EP 80400998A EP 80400998 A EP80400998 A EP 80400998A EP 0022035 B1 EP0022035 B1 EP 0022035B1
Authority
EP
European Patent Office
Prior art keywords
venturis
enclosure
boxes
walls
spraying
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
Application number
EP80400998A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0022035A1 (fr
Inventor
Jean Descolas
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.)
ABB Technology FLB AB
Original Assignee
Flaekt AB
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 Flaekt AB filed Critical Flaekt AB
Publication of EP0022035A1 publication Critical patent/EP0022035A1/fr
Application granted granted Critical
Publication of EP0022035B1 publication Critical patent/EP0022035B1/fr
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • D04H1/4218—Glass fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/42—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties characterised by the use of certain kinds of fibres insofar as this use has no preponderant influence on the consolidation of the fleece
    • D04H1/4209—Inorganic fibres
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
    • D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
    • D04H1/58—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives
    • D04H1/64—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions
    • D04H1/655—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by applying, incorporating or activating chemical or thermoplastic bonding agents, e.g. adhesives the bonding agent being applied in wet state, e.g. chemical agents in dispersions or solutions characterised by the apparatus for applying bonding agents
    • 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
    • Y10S261/00—Gas and liquid contact apparatus
    • Y10S261/54—Venturi scrubbers

Definitions

  • the invention generally relates to a method and a device for depolluting or cleaning and purifying gases loaded with fibers, dust and gaseous effluents containing polymerizable materials, in an installation for manufacturing a fiber mat, by example of mineral fibers such as glass wool or rock wool, or vegetable fibers such as flax fibers, wood fibers, or any other material.
  • mineral fibers such as glass wool or rock wool
  • vegetable fibers such as flax fibers, wood fibers, or any other material.
  • the mattresses of mineral or vegetable fibers are generally formed by projection of fibers, by means of a rotating die, on a conveyor belt contained in an elongated enclosure. A suction of air under the conveyor belt causes the fibers to settle on this belt, to form a mattress. At the same time as the fibers, a polymerizable binder is also sprayed onto the strip, to agglomerate the fibers into a mattress.
  • the suction of air under the conveyor belt which is generally of the perforated type, is done by means of suction fans.
  • suction fans To prevent particles of polymerizable binder from settling on the walls of the enclosure or of the ducts located under the conveyor belt and connected to the fans, spray bars for spraying a washing liquid at high pressure, generally water , are provided under the conveyor belt.
  • these measures are not sufficient, and that the polymerizable binder is deposited on the blades of the fan or fans, and solidifies there. This deposit causes a static and dynamic imbalance of the fan blades, which after a very short time can no longer function. It is then necessary to dismantle the fans and clean them with a chisel.
  • Such depollution methods are disclosed in particular in patent application FR-A-2 247 346 which describes a depollution process in an installation for manufacturing a fiber mat which are sprayed with droplets of polymerizable binder on a conveyor belt.
  • this method consisting in placing under vacuum by a fan a box located under the conveyor belt and associated with a washing chamber placed downstream of the box under vacuum.
  • Spraying means are arranged in the duct defined below the conveyor belt by the box and the washing chamber in order to constitute curtains of water droplets on the passage of the fumes having passed through the mattress of fibers in formation and which are thus freed from the elements which they contain in suspension, these elements being constituted by the fibers and the binder with which they are responsible when they pass through the mat of fibers in formation.
  • the fibers contained in the smoke collect water droplets and are deposited by gravity on the bottom of the washing chamber, the water to which part of the the pollutant load of the fumes being removed for further treatment.
  • the purpose of the present invention is precisely to avoid the drawbacks of the prior art, and for this purpose it proposes a depollution process in an installation for manufacturing a mattress of fibers, such as glass or rock wool, which are projected or deposited with particles or droplets of polymerizable binder on a perforated conveyor belt, consisting in associating with suction means air loaded with fiber dust and particles or droplets of binder through a conduit located under the conveyor belt, to means forming ramps for spraying a washing liquid such as water, arranged in the duct to form a runoff of liquid on all the walls of the ducts or dust removal means on which dust and the binder are likely to be deposited, and then to treat this washing liquid, characterized in that it consists in having, under the conveyor belt, series of Venturi with adjustable section neck housed in boxes and opening into the duct connected to the suction means, to have some of the spray sprays of washing liquid at low pressure consisting of nozzles cooperating with means for dispersing the jets of liquid in upstream
  • the invention also provides a depollution device in an installation for manufacturing a fiber mattress, enabling the method according to the invention to be carried out, characterized in that it comprises, under the conveyor belt for forming the fiber mattress , an enclosure whose upper part is closed by the conveyor belt and which contains a series of longitudinally aligned boxes, forming Venturi with adjustable section neck, arranged under the conveyor belt, spraying sprays of washing liquid at low pressure such as water, to form a runoff of liquid on the walls of the enclosure and boxes, the outlet of said enclosure being connected to air suction means, and means for adjusting the section from the Venturi pass.
  • An installation for manufacturing a mattress of fibers generally comprises, very schematically, a forming head 10 such as a rotary die, which projects fibers 11 on a conveyor belt 12 of the perforated type, on which a mattress 13 of fibers is formed.
  • a polymerizable binder is also projected as indicated by the arrows 14, on the conveyor belt 12 with the fibers 11, to form the mattress 13.
  • the enclosure containing the rotary die 10 and the means for spraying binder has been shown very schematically at 14, and includes air inlets.
  • the air from the enclosure 15 is sucked through the conveyor belt 12 by suction fans, not shown, mounted at the end of the duct 16.
  • This suction which takes place over a certain length of conveyor belt 12, makes it possible to attract the fibers and the binder on the strip 12 to form the mattress 13.
  • the invention therefore proposes a series of means which will be described in detail in the following.
  • the invention firstly provides booms 17 for spraying a low-pressure washing liquid, such as water, under the conveyor belt 12.
  • the booms 17 extend longitudinally and horizontally under this belt, and they are provided with spray nozzles 18, surmounted by cups 19 and 20, provided at two different heights.
  • the nozzles 18 have a relatively large diameter, so that they cannot become clogged. They are also not subject to very rapid erosion, the liquid flowing in the pipes 17 being at low pressure.
  • the liquid leaving the nozzles 18 strikes the cups 19 and 20, and is sprayed on the walls of an enclosure 21 situated under the conveyor belt 12.
  • This enclosure 21 is provided with inspection doors 22, allowing inspection and maintenance of the water spraying systems 17, 18, 19 and 20.
  • a central wall 23 is removably attached to a rod extending just under the conveyor belt 12.
  • Each box 25 comprises two Venturi 26 which are transversely juxtaposed in the box.
  • Each V-shaped venturi 26 is of elongated longitudinal shape, its neck 27 being constituted by an elongated rectangular slot.
  • the section of the neck 27 is adjustable, by means of a plate 28 which is slidably mounted between two guide plates 29 of the box and the internal end of which more or less closes the slot constituting the neck 27 of the Venturi.
  • Each box 25 is mounted vertically mobile, in the enclosure 24, between an upper service position which is that shown in FIG. 2, and a lower position, not shown, in which the box 25 is brought opposite a door. 32 of the enclosure 24. In this lower position, the box 25 can be removed from the enclosure 24, to be cleaned or replaced.
  • Each box 25 can be supported by a rigid frame connected to handling cables 33 passing over pulleys 34 and arriving at winches 35, or else each box 25 can itself be directly connected to cables 33.
  • a central wall 36 similar to the aforementioned removable central wall 23, is hung under each box 36.
  • the spoon-shaped part 31 placed at the output from the neck 27 of each Venturi 26, makes it possible to retransform by shock, the water mist resulting from the atomization, into large droplets.
  • the mixture of liquid and air leaving the Venturi 26 is guided, by the parts 31, on the one hand on some of the internal walls of the enclosure 24, and on the other hand on one face of the central wall 36.
  • spraying ramps for washing liquid at low pressure, shown at 37, are provided on the other walls of the enclosure 24, to prevent them from depositing and sticking of dust and binder.
  • the washing liquid laden with dust and binder is treated, in a conventional manner, for the separation of dust and binders, and is then advantageously recycled in the spraying booms 17 and 37.
  • each box 25 can comprise several Venturi transversely juxtaposed, their number not necessarily being two as in the example shown in FIG. 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Inorganic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Dispersion Chemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Nonwoven Fabrics (AREA)
  • Paper (AREA)
  • Treatment Of Fiber Materials (AREA)
EP80400998A 1979-07-02 1980-07-01 Procédé et dispositif de dépollution dans une installation de fabrication d'un matelas de fibres Expired EP0022035B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR7917133A FR2460360A1 (fr) 1979-07-02 1979-07-02 Procede et dispositif de depollution dans une installation de fabrication d'un matelas de fibres
FR7917133 1979-07-02

Publications (2)

Publication Number Publication Date
EP0022035A1 EP0022035A1 (fr) 1981-01-07
EP0022035B1 true EP0022035B1 (fr) 1983-12-07

Family

ID=9227390

Family Applications (1)

Application Number Title Priority Date Filing Date
EP80400998A Expired EP0022035B1 (fr) 1979-07-02 1980-07-01 Procédé et dispositif de dépollution dans une installation de fabrication d'un matelas de fibres

Country Status (4)

Country Link
US (1) US4298367A (cg-RX-API-DMAC10.html)
EP (1) EP0022035B1 (cg-RX-API-DMAC10.html)
DE (1) DE3065822D1 (cg-RX-API-DMAC10.html)
FR (1) FR2460360A1 (cg-RX-API-DMAC10.html)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4826514A (en) * 1987-06-23 1989-05-02 Griffis Steven C Apparatus for dampening hazardous material
US4786296A (en) * 1987-06-23 1988-11-22 Griffis Steven C Apparatus for use in asbestos removal
JP2578901B2 (ja) * 1988-04-21 1997-02-05 株式会社大氣社 遠心分離型塗料ミスト含有気体浄化装置
WO1991001184A1 (en) * 1989-07-18 1991-02-07 Bartimote John K Material handling apparatus and method
KR100419415B1 (ko) * 2001-10-22 2004-02-19 삼성전자주식회사 광섬유 제조장치의 드로우타워 차단도어

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2337983A (en) * 1941-05-13 1943-12-28 Ernest F Fisher Spray booth
US3795093A (en) * 1972-04-27 1974-03-05 Svenska Flaektfabriken Ab Apparatus for cleaning the air from a spray painting chamber
US3881898A (en) * 1973-01-18 1975-05-06 Lodge Cottrell Ltd Gas treatment
FR2318121A1 (fr) * 1975-02-10 1977-02-11 Saint Gobain Perfectionnement a la fabrication de nappes ou matelas de fibres de matiere thermoplastique, telle que le verre
US4105424A (en) * 1973-03-30 1978-08-08 Saint-Gobain Industries Method and apparatus for suppression of pollution in mineral fiber manufacture
FR2247346B1 (cg-RX-API-DMAC10.html) * 1973-10-10 1978-02-17 Saint Gobain
FR2368445A1 (fr) * 1976-10-22 1978-05-19 Saint Gobain Regulation des installations de fibrage avec traitement des effluents
ZA756778B (en) * 1974-12-12 1977-06-29 Owens Corning Fiberglass Corp Pollution control system for removing particles in stack gases
US4239512A (en) * 1977-07-21 1980-12-16 Binks Manufacturing Company Air washer particularly for paint spray booths

Also Published As

Publication number Publication date
EP0022035A1 (fr) 1981-01-07
US4298367A (en) 1981-11-03
FR2460360B1 (cg-RX-API-DMAC10.html) 1983-08-19
FR2460360A1 (fr) 1981-01-23
DE3065822D1 (en) 1984-01-12

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