WO2020207644A1 - Installation de rinçage en cascade pour le traitement d'un produit plat en forme de bande - Google Patents

Installation de rinçage en cascade pour le traitement d'un produit plat en forme de bande Download PDF

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Publication number
WO2020207644A1
WO2020207644A1 PCT/EP2020/053694 EP2020053694W WO2020207644A1 WO 2020207644 A1 WO2020207644 A1 WO 2020207644A1 EP 2020053694 W EP2020053694 W EP 2020053694W WO 2020207644 A1 WO2020207644 A1 WO 2020207644A1
Authority
WO
WIPO (PCT)
Prior art keywords
rinsing
cascade
stage
flat product
flushing
Prior art date
Application number
PCT/EP2020/053694
Other languages
German (de)
English (en)
Inventor
Siegfried ENGEL
Original Assignee
Sms Group Gmbh
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 Sms Group Gmbh filed Critical Sms Group Gmbh
Publication of WO2020207644A1 publication Critical patent/WO2020207644A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G3/00—Apparatus for cleaning or pickling metallic material
    • C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
    • C23G3/027—Associated apparatus, e.g. for pretreating or after-treating
    • C23G3/029—Associated apparatus, e.g. for pretreating or after-treating for removing the pickling fluid from the objects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/02—Cleaning by the force of jets or sprays
    • B08B3/022—Cleaning travelling work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B08—CLEANING
    • B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
    • B08B3/04—Cleaning involving contact with liquid
    • B08B3/041—Cleaning travelling work

Definitions

  • the invention relates to a cascade rinsing system for treating a belt-shaped flat product, having at least two rinsing stages arranged in series with respect to a conveying direction of the flat product through the cascade rinsing system, each rinsing stage having a rinsing basin from which a rinsing liquid for treating the flat product in the respective rinsing stage can be taken. It is known to remove scale from a flat steel product by pickling the flat steel product using a pickling acid. After the flat steel product has been pickled, the surface of the flat steel product must be freed from residues of the pickling acid still adhering to it.
  • This cleaning of a flat steel product usually takes place in a continuous rinsing system, such as a multi-stage countercurrent rinsing system (cascade rinsing system), which can be designed as a pressure spray system, for example.
  • a continuous rinsing system such as a multi-stage countercurrent rinsing system (cascade rinsing system)
  • cascade rinsing system which can be designed as a pressure spray system, for example.
  • the cascading flow of the rinsing liquid through such a cascade rinsing system minimizes the water consumption for cleaning the flat steel product.
  • Components of such a cascade rinsing system that carry rinsing liquid in particular a process tank, filters, pumps and sensory field devices providing rinsing stages of the cascade rinsing system, are usually arranged distributed over several treatment levels.
  • the process tank is built into the treatment line, while pumps, filters and sensory field devices are usually set up on
  • the system components which are arranged separately from the process tank, are connected to the process tank in a complex manner via process piping.
  • This conventional arrangement of the system components is quite complex in terms of maintenance and operability, especially since maintenance work is required on different treatment levels, which, for example, requires the use of work platforms and is associated with additional design effort and costs.
  • DE 10 2013 207 343 B3 discloses a device for the wet-chemical treatment of flat items to be treated for a horizontal continuous system, having a first treatment module for treating the items to be treated with a first liquid, a second treatment module for treating the items to be treated with a second liquid, accumulation means that are set up in order to accumulate the first liquid in a first treatment area of the first treatment module and the second liquid in a second treatment area of the second treatment module, and a transport device for transporting the items to be treated in a horizontal transport plane through the first treatment area and the second treatment area, the device being so set up is that the transport device transfers the material to be treated directly between the first treatment area and the second treatment area.
  • EP 0 707 668 B1 discloses a method for the aftertreatment of pickled steel products, in particular pickled carbon steel hot strip, by rinsing with water in continuous rinsing systems, with carbon dioxide being blown into at least one rinsing section of the rinsing system.
  • EP 1 136 594 A2 discloses a method for operating a
  • Countercurrent cascade rinsing which is connected downstream of the process part or a post-treatment part of a system for treating metallic strips for wet chemical surface treatment and in which each rinsing stage has a rinsing water circulation system in addition to a connection to a central fresh water volume supply, with the associated one of each rinsing stage
  • Rinsing water circulation system a partial flow is branched off as a bypass flow and fed to the respective preceding flushing stage.
  • US 3,938,214 A discloses a flushing system for flushing an acid pickled steel belt, comprising a plurality of successive adjacent flushing chambers, each of which contains a bath of flushing solution which is sprayed onto the steel belt as it passes through the respective washing chamber.
  • the last rinsing chamber is with fresh water is supplied and a solution volume corresponding to the fresh water added is continuously transferred from each washing chamber to an adjacent washing chamber.
  • a concentrated waste water is discharged from the first rinsing chamber.
  • US Pat. No. 4,039,349 A discloses a multi-stage cascade rinsing device in which a substantial part or all of the overflow rinsing liquid from a collecting container of one rinsing stage is fed together with a rinsing liquid from the next subsequent rinsing stage directly into a spray unit of this next rinsing stage
  • US 5 179 967 A discloses an apparatus for flushing metal strips, comprising a process tank with an inlet end, an outlet end, a bottom and sides.
  • the floor has a top that rises towards the inlet and outlet ends to define a corresponding weir at each of the inlet and outlet ends.
  • the bottom also has rinsing fluid openings for dispensing rinsing fluid on the top.
  • the device has a washing liquid supply device for supplying washing liquid to the washing liquid openings.
  • the device also has control means for controlling the depth of the flushing liquid flowing over the weirs in order to completely immerse the metal strip in the flushing liquid when the metal strip is guided through the process tank and over the weirs.
  • One object of the invention is to provide a more compact cascade flushing system.
  • the rinsing liquid pumps with which the rinsing liquid can be pumped from the respective rinsing basin of a rinsing stage to a rinsing agent dispensing unit of the rinsing stage, are structurally integrated into the respective rinsing stages and are therefore not arranged separately from the rinsing stages on a hut floor.
  • the cascade washing system according to the invention is designed to be significantly more compact than a conventional cascade washing system. This creates, for example, free installation space on the drive side on the hut floor.
  • the cascade rinsing system according to the invention can be partially or completely prefabricated in order to be able to be assembled as a whole on site, whereby the commissioning effort of the cascade rinsing system is significantly reduced, especially since no piping work is required on site to connect the respective rinsing liquid pump to the respective rinsing liquid dispensing unit.
  • the cascade washing system according to the invention can, for example, have two to six washing stages, which are arranged in series with one another with regard to the conveying direction of the flat product through the cascade washing system.
  • the washing liquid can be taken from the washing basin of the respective washing stage with the washing liquid pump of the washing stage.
  • the respective flushing liquid pump is designed, for example, as a submersible pump or vertical pump or as a horizontal pump.
  • the rinsing liquid dispensing unit of the respective rinsing stage can, for example, have one or more transverse to the conveying direction of the flat product through the Cascade rinsing system have running spray tubes with which the rinsing liquid can be sprayed onto a surface of the flat product.
  • the cascade flushing system according to the invention can carry out a treatment, for example in the form of cleaning a pickled strip-shaped flat product.
  • a treatment for example in the form of cleaning a pickled strip-shaped flat product.
  • another treatment of the strip-shaped flat product can be carried out with the cascade washing system according to the invention.
  • the composition of the rinsing liquid used must be adapted to the intended use
  • each rinsing stage has at least one rinsing liquid filter unit arranged in its rinsing basin.
  • the washing liquid filter units are also structurally integrated into the cascade washing system, which makes the cascade washing system even more compact and further simplifies the effort involved in installing the cascade washing system.
  • the rinsing liquid filter unit of the respective rinsing stage can be connected to the rinsing liquid pump of this rinsing stage in a communicating manner via a pipeline.
  • At least one flushing stage has at least one field device.
  • the field device is also structurally integrated into the cascade rinsing system, which makes the cascade rinsing system even more compact and further simplifies the effort involved in installing the cascade rinsing system.
  • a suitably pre-assembled cascade flushing system only needs to be connected to a flushing liquid supply, a flushing liquid drain and an electrical infrastructure on site in order to be ready for immediate use.
  • At least one flushing stage preferably has at least one field device.
  • the field device is a sensor.
  • the sensor can be, for example, a level sensor, a pH value sensor, a conductivity sensor or the like in order to detect the level of the washing liquid in the sink of the respective washing stage or to record the acid content of the washing water in the sink.
  • FIG. 1 shows a schematic side view of an exemplary embodiment for a cascade washing system according to the invention.
  • FIG. 2 is a schematic plan view of that shown in FIG.
  • FIG. 1 shows a schematic side view of an exemplary embodiment for a cascade rinsing system 1 according to the invention for treating a strip-shaped flat product, not shown.
  • the cascade washing system 1 has five washing stages 2 to 6 arranged in series with one another with respect to a conveying direction F of the flat product through the cascade washing system 1.
  • Each rinsing stage 2, 3, 4, 5 or 6 has a rinsing basin 7 from which a rinsing liquid (not shown) for treating the flat product in the respective rinsing stage 2, 3, 4, 5 or 6 can be taken.
  • each washing stage 2, 3, 4, 5 or 6 has a washing liquid pump 8 which is at least partially arranged in its washing basin 7.
  • each washing stage 2, 3, 4, 5 or 6 has a washing liquid filter unit 9 arranged in its washing basin 7.
  • At least one flushing stage 2, 3, 4, 5 or 6 can have at least one field device (not shown), which can be a sensor (not shown).
  • Each rinsing stage 2, 3, 4, 5 or 6 also has, for example, six spray tubes 10 for applying the rinsing liquid to the flat product, the rinsing liquid being able to be applied by means of the spray tubes 10 to both an upper side and an underside of the flat product.
  • the spray pipes 10 of the respective rinsing stage 2, 3, 4, 5 or 6 are connected to the rinsing liquid pump 8 of the rinsing stage 2, 3, 4, 5 or 6.
  • Each rinsing stage 2, 3, 4, 5 or 6 furthermore has guide and squeezing rollers 11 for guiding the flat product through the cascade washing system 1 and for squeezing liquid off the surfaces of the flat product.
  • FIG. 2 shows a schematic top view of the cascade flushing system 1 shown in FIG. 1.
  • the spray pipes 10 can be seen.

Abstract

L'invention concerne une installation de rinçage en cascade (1) pour le traitement d'un produit plat en forme de bande, l'installation présentant au moins deux étapes de rinçage (2, 3, 4, 5, 6) disposées en rangée l'une par rapport à l'autre par rapport à une direction de transport (F) du produit plat à travers l'installation de rinçage en cascade (1), chaque étape de rinçage (2, 3, 4, 5, 6) présentant un bac (7) de rinçage dont peut être prélevé un liquide de rinçage pour le traitement du produit plat dans l'étape (2, 3, 4, 5, 6) de rinçage concernée. L'objet de l'invention est de permettre d'obtenir une installation de rinçage en cascade (1) compacte. À cet effet, chaque étape (2, 3, 4, 5, 6) de rinçage présente au moins une pompe à liquide de rinçage (8) disposée au moins en partie dans son bac (7) de rinçage.
PCT/EP2020/053694 2019-04-09 2020-02-13 Installation de rinçage en cascade pour le traitement d'un produit plat en forme de bande WO2020207644A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102019205060.3 2019-04-09
DE102019205060 2019-04-09
DE102019215572.3A DE102019215572A1 (de) 2019-04-09 2019-10-10 Kaskadenspülanlage zum Behandeln eines bandförmigen Flachprodukts
DE102019215572.3 2019-10-10

Publications (1)

Publication Number Publication Date
WO2020207644A1 true WO2020207644A1 (fr) 2020-10-15

Family

ID=72613012

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2020/053694 WO2020207644A1 (fr) 2019-04-09 2020-02-13 Installation de rinçage en cascade pour le traitement d'un produit plat en forme de bande

Country Status (2)

Country Link
DE (1) DE102019215572A1 (fr)
WO (1) WO2020207644A1 (fr)

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3938214A (en) 1974-01-14 1976-02-17 Inland Steel Company Cascade rinsing system and method
US4039349A (en) 1976-02-17 1977-08-02 Bethlehem Steel Corporation Method and apparatus for multi-stage rinsing
US5179967A (en) 1991-08-28 1993-01-19 Nelson Steel Apparatus for rinsing metal strip
EP0707668B1 (fr) 1993-07-08 1996-12-27 Andritz-Patentverwaltungs-Gesellschaft m.b.H. Procede de traitement posterieur de produits en acier decape, notamment de feuillards lamines a chaud en acier ordinaire
AT404472B (de) * 1997-04-23 1998-11-25 Voest Alpine Ind Anlagen Verfahren zur nachbehandlung von gebeiztem stahlband
DE10043184A1 (de) * 1999-09-03 2001-05-31 Andritz Ag Maschf Verfahren zur Nachbehandlung, insbesondere Spülung, eines Metallbandes
EP1136594A2 (fr) 2000-03-24 2001-09-26 SMS Demag AG Dispositif et méthode de fonctionnement d'un systéme à plusieurs étages de nettoyage contre-courant à cascade
DE102013207343B3 (de) 2013-04-23 2014-08-28 Atotech Deutschland Gmbh Vorrichtung und Verfahren zum nasschemischen Behandeln von flächigem Behandlungsgut
DE202018101071U1 (de) * 2018-02-27 2018-04-20 Staku Anlagenbau Gmbh Hochdruckreinigungsvorrichtung für Endlosmaterial

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3938214A (en) 1974-01-14 1976-02-17 Inland Steel Company Cascade rinsing system and method
US4039349A (en) 1976-02-17 1977-08-02 Bethlehem Steel Corporation Method and apparatus for multi-stage rinsing
US5179967A (en) 1991-08-28 1993-01-19 Nelson Steel Apparatus for rinsing metal strip
EP0707668B1 (fr) 1993-07-08 1996-12-27 Andritz-Patentverwaltungs-Gesellschaft m.b.H. Procede de traitement posterieur de produits en acier decape, notamment de feuillards lamines a chaud en acier ordinaire
AT404472B (de) * 1997-04-23 1998-11-25 Voest Alpine Ind Anlagen Verfahren zur nachbehandlung von gebeiztem stahlband
DE10043184A1 (de) * 1999-09-03 2001-05-31 Andritz Ag Maschf Verfahren zur Nachbehandlung, insbesondere Spülung, eines Metallbandes
EP1136594A2 (fr) 2000-03-24 2001-09-26 SMS Demag AG Dispositif et méthode de fonctionnement d'un systéme à plusieurs étages de nettoyage contre-courant à cascade
DE102013207343B3 (de) 2013-04-23 2014-08-28 Atotech Deutschland Gmbh Vorrichtung und Verfahren zum nasschemischen Behandeln von flächigem Behandlungsgut
DE202018101071U1 (de) * 2018-02-27 2018-04-20 Staku Anlagenbau Gmbh Hochdruckreinigungsvorrichtung für Endlosmaterial

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