WO2020221500A1 - Buse d'injecteur, dispositif de mélange et utilisation de la buse d'injecteur - Google Patents

Buse d'injecteur, dispositif de mélange et utilisation de la buse d'injecteur Download PDF

Info

Publication number
WO2020221500A1
WO2020221500A1 PCT/EP2020/057122 EP2020057122W WO2020221500A1 WO 2020221500 A1 WO2020221500 A1 WO 2020221500A1 EP 2020057122 W EP2020057122 W EP 2020057122W WO 2020221500 A1 WO2020221500 A1 WO 2020221500A1
Authority
WO
WIPO (PCT)
Prior art keywords
closure body
fluid
nozzle opening
nozzle
injector nozzle
Prior art date
Application number
PCT/EP2020/057122
Other languages
German (de)
English (en)
Inventor
Hermann Post
Markus Suschatz
Felix WIEDEMANN
Stephan WAHRENBURG
Original Assignee
Voith Patent 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 Voith Patent Gmbh filed Critical Voith Patent Gmbh
Priority to EP20713538.5A priority Critical patent/EP3962636B1/fr
Priority to CN202090000418.1U priority patent/CN217266617U/zh
Publication of WO2020221500A1 publication Critical patent/WO2020221500A1/fr

Links

Classifications

    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/0018—Devices for dispensing fibres in a fluid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/30—Injector mixers
    • B01F25/31—Injector mixers in conduits or tubes through which the main component flows
    • B01F25/313—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit
    • B01F25/3133—Injector mixers in conduits or tubes through which the main component flows wherein additional components are introduced in the centre of the conduit characterised by the specific design of the injector
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/3033—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head
    • B05B1/3073—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages the control being effected by relative coaxial longitudinal movement of the controlling element and the spray head the controlling element being a deflector acting as a valve in co-operation with the outlet orifice
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/30—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages
    • B05B1/32—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages in which a valve member forms part of the outlet opening
    • B05B1/326—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means designed to control volume of flow, e.g. with adjustable passages in which a valve member forms part of the outlet opening the valve being a gate valve, a sliding valve or a cock
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21C—PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE-CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
    • D21C7/00—Digesters
    • D21C7/06—Feeding devices
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/08—Regulating consistency
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water

Definitions

  • the invention relates to an injector nozzle for injecting a first fluid into a mixing zone through which a second fluid flows, with at least one nozzle opening, the cross section of which can be changed by means of a position-variable closure body.
  • the invention also relates to a mixing arrangement with an injector nozzle with at least one nozzle opening and the use of the injector nozzle and the mixing arrangement.
  • Such nozzles are i.a. Used in the stock preparation of a paper mill to reduce or increase the consistency of the pulp suspensions or to add a chemical additive to the pulp suspension.
  • a mixing device for paper fiber suspensions is known from US 2002/0166645 A1, in particular for use in the feed line to the headbox. It is provided with an inner tube for one component and an outer tube for another component. The inner tube ends inside the outer one, so that mixing can take place downstream. This is supported by complex, wave-shaped fittings.
  • a small percentage of pulp and / or additive has to be introduced uniformly and simultaneously into the entire pulp suspension.
  • different grammages are often produced from one production line, which result in different stock densities at the headbox.
  • the object of the invention is therefore to ensure the most trouble-free injection possible and the most intensive possible mixing of the fluids with relatively simple means.
  • the object was achieved in that the closure body is located on the side of the nozzle opening facing the mixing zone.
  • the size of the flow cross section of the nozzle opening and thus also the jet speed and the pressure loss in the first fluid can be adjusted via the position of the closure body. Since the closure body is located on the side of the nozzle opening facing the mixing zone, the risk of clogging by fibers or contaminants is considerably reduced.
  • the closure body is moved away from the nozzle opening, i.e. moved towards the mixing zone.
  • the closure body is moved towards the nozzle opening or even into the nozzle opening.
  • the closure body In order to make this cross-sectional change and the change in position of the closure body as simple as possible, the closure body should be arranged concentrically to the nozzle opening and / or be displaceable via a closure body axis guided through the nozzle opening.
  • the cross section through which the flow can pass between the nozzle opening and the closure body should vary in its width around the nozzle opening. This means that the effective range of the injection also varies.
  • cross section between the nozzle opening and the closure body is formed at least essentially, preferably exclusively by several channels and each channel of the cross section has a separate closure body wing, preferably detachably connected to a closure body axis of the closure body assigned.
  • the cross section of the respective channel through which the flow can flow can be changed and closed via the closure body wings.
  • closure body vanes in particular are subject to high wear, the releasable connection with the closure body axis enables them to be exchanged and thus a significant increase in the service life of the injector nozzle.
  • the channels must be as large as possible, but as small as possible to ensure the highest possible injection speed. Even taking into account that the effective cross section of the channels can be easily adjusted, the channels should therefore be designed in the form of slits and preferably have a width between 30 and 60 mm.
  • the closure body in particular the closure body wings, should have a concave or convex shape on the side facing the nozzle opening in the flow direction of the first fluid.
  • the side of the closure body facing the nozzle opening in particular the closure body wing, forms an angle between 30 and 75 ° with a closure body axis guided out of the nozzle opening.
  • the side of the closure body facing the nozzle opening in particular the closure body wing, have flow profiles for influencing the flow of the first fluid.
  • the closure body in particular the closure body wings, should be detachably attached to the closure body axis, in particular also be hollow.
  • the closure body is advantageously at least partially, in particular its closure body wings, completely applied in layers from a liquid, pasty or solid material and thereby subjected to a physical or chemical hardening or melting process. This enables the construction to be carried out in a way that saves weight and material.
  • the injector nozzle should advantageously be oriented at least essentially in the direction of flow of the second fluid and the mixing zone should preferably be formed by a mixing tube through which the second fluid flows.
  • a preferred application results when the first fluid is formed by a fiber suspension, the fiber density of which is preferably between 2.5 and 4.5% and / or the second fluid is formed by water or a fiber suspension with a low fiber density.
  • the mixing quality can also be guaranteed over a wide production range.
  • FIG. 1 a schematic cross section through a mixing arrangement
  • FIG. 2 a view of the injector nozzle 3
  • Figure 3 a schematic cross section through an injector nozzle 3 and
  • FIG. 4 a side view of another injector nozzle 3.
  • An important application of the invention is the provision and conditioning of material flows in the constant part upstream of a headbox of a paper machine.
  • the mixing device shown in FIG. 1 in the form of a mixing tube is supplied as a main flow (second fluid 2) with a diluting liquid, for example white water, via an inlet.
  • a pipe bend which has a curvature of at least 45 °, in particular approx. 90 °, adjoins the inlet in the direction of flow of the dilution liquid.
  • first fluid 1 is fed into the dilution liquid via another inlet with an injector nozzle 3, the consistency of which is in a range between 2 and 6%, in particular between 2.5 and 4.5%.
  • the mixing zone 4 following the merging of the two fluids 1, 2 lies in the straight pipe section following the pipe bend and can also have a static mixer (not shown here) to improve the mixing.
  • the main flow (second fluid 2) can also be accelerated by reducing the cross section in the area of the injector nozzle 3 for better mixing.
  • the high-consistency pulp suspension (first fluid 1) is fed in at a flow rate that is between 5 and 15 m / s and is higher than the flow rate of the dilution liquid (fluid 2).
  • first fluid 1 reaches the center of the flow of the dilution liquid (second fluid 2) as possible, the injector nozzle 3 protrudes relatively far beyond the inner wall of the pipe bend.
  • the injector nozzle 3 arranged in the center of the straight pipe section of the mixing zone 4 is aligned in the flow direction of the second fluid 2.
  • the fiber suspension can be fed through a pipeline to a headbox of a machine for producing a fiber web, in particular a paper web.
  • the injector nozzle 3 for injecting the first fluid 1 into the mixing zone 4 through which the second fluid 2 flows has a nozzle opening 5, the cross section of which can be changed via a position-adjustable closure body 6.
  • the closure body 6 is located on the side of the nozzle opening 5 facing the mixing zone 4.
  • the closure body 6 is moved away from the nozzle opening in the direction of flow of the fluid 1.
  • a movement of the closure body 6 against the direction of flow of the fluid 1 towards the nozzle opening 5 leads to a reduction in size of the effective nozzle opening 5 and, at the end, to its closure.
  • the closure body 6 is arranged concentrically to the nozzle opening 5 and is displaceable via a closure body axis 7 guided out of the pipe bend through the nozzle opening 5.
  • the closure body 6 following the nozzle opening 5 proves to be advantageous for avoiding clogging due to the high fiber content.
  • the cross section between the nozzle opening 5 and the closure body 6, as can be seen in FIG. 2, is formed by several slot-shaped channels 8 running radially from the closure body axis 7 .
  • the number of channels 8 is between 2 and 10, preferably between 4 and 8, and the slot width between 30 and 60 mm.
  • each channel 8 is assigned a separate locking body wing 9 that is detachably connected to the locking body axis 7 of the locking body 6.
  • closure body 6 which project at least partially into the mixing zone 4 when the injector nozzle 3 is opened, i.e. the closure body wing 9 and the closure body axis 7 also lead to turbulence and thus support the mixing of the fluids 1, 2.
  • the side of the closure body 6 facing the nozzle opening 5, i.e. the closure body wing 9, as can be seen in FIG. 3, forms an angle between 30 and 75 ° with the closure body axis 7 guided out of the nozzle opening 5.
  • the closure body wings 9, as indicated, can have a concave or convex shape on the side facing the nozzle opening 5 in the flow direction of the first fluid 1.
  • Flow profiles for influencing the flow of the first fluid 1, such as notches, barriers, etc., can also be arranged on this side of the closure body wings 9.
  • the disruptive bodies 11 are attached to the housing 10 of the injector nozzle 3 or, as can be seen in FIG. 4, even part of the housing 10.
  • each disruptive body 11 here comprises a part of the nozzle opening 5. Accordingly, in the solution according to FIG Mixing zone 4.
  • the housing 10 of the injector nozzle 3 as well as the closure body 6 can at least partially consist of metal or plastic, in particular fiber-reinforced plastic.
  • a dished bottom profile, in which slots for the channels 8 are milled, is also particularly suitable as the housing 10.
  • closure body wings 9 are detachably attached to the closure body axis 7 and are hollow.
  • closure body wings 9 are applied completely in layers from a liquid, pasty or solid material and are subjected to a physical or chemical hardening or melting process.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)

Abstract

L'invention concerne une buse (3) d'injecteur servant à injecter un premier fluide (1) dans une zone de mélange (4) traversée par un deuxième fluide (2), pourvue d'au moins une ouverture (5) de buse, dont la section transversale pouvant être traversée peut être modifiée par l'intermédiaire d'un corps de fermeture (6) à position variable. L'invention vise à améliorer le mélange des fluides (1, 2) en ce que le corps de fermeture (6) se trouve sur le côté, pointant vers la zone de mélange (4), de l'ouverture (5) de buse.
PCT/EP2020/057122 2019-04-30 2020-03-16 Buse d'injecteur, dispositif de mélange et utilisation de la buse d'injecteur WO2020221500A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP20713538.5A EP3962636B1 (fr) 2019-04-30 2020-03-16 Buse d'injecteur, dispositif de mélange et utilisation de la buse d'injecteur
CN202090000418.1U CN217266617U (zh) 2019-04-30 2020-03-16 注射喷嘴和混合装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102019111122.6 2019-04-30
DE102019111122.6A DE102019111122A1 (de) 2019-04-30 2019-04-30 Injektordüse

Publications (1)

Publication Number Publication Date
WO2020221500A1 true WO2020221500A1 (fr) 2020-11-05

Family

ID=69953982

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2020/057122 WO2020221500A1 (fr) 2019-04-30 2020-03-16 Buse d'injecteur, dispositif de mélange et utilisation de la buse d'injecteur

Country Status (4)

Country Link
EP (1) EP3962636B1 (fr)
CN (1) CN217266617U (fr)
DE (1) DE102019111122A1 (fr)
WO (1) WO2020221500A1 (fr)

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1561697A1 (de) * 1967-04-15 1970-10-01 Voith Gmbh J M Verfahren zum kontinuierlichen Verduennen und/oder Mischen von langen,zum Verspinnen neigende Fasern enthaltenen Suspensionen und Vorrichtung zum Durchfuehren dieses Verfahrens
US3782884A (en) * 1972-05-09 1974-01-01 Standard Oil Co Acid gas burner
JPS5721019U (fr) * 1980-07-10 1982-02-03
US5030326A (en) * 1988-05-13 1991-07-09 S.E.M.T.I. Societe A Responsabilite Limitee Paste-like mixture feed device
US5678766A (en) * 1995-07-19 1997-10-21 Peck; William E. Foam nozzle
DE19720528A1 (de) * 1997-05-16 1998-11-19 Gelhard Volker Dipl Ing Dipl W Vorrichtung und Verfahren zum Vermischen eines ersten Fluids mit einem zweiten Fluid
US20020166645A1 (en) 1999-10-12 2002-11-14 Metso Paper Inc Method and arrangement for mixing pulp components in the manufacture of paper
DE69915737T2 (de) 1998-06-29 2004-08-12 Voith Paper Patent Gmbh Verfahren und Vorrichtung zur Durchmissung von Faserstoffsuspensionen
DE10317865A1 (de) 2003-04-09 2004-10-21 Voith Paper Patent Gmbh Anordnung und Verfahren zum Zuführen einer zweiten Flüssigkeit zu einer Papierfaserstoffsuspension
WO2009109299A1 (fr) * 2008-03-05 2009-09-11 United Waters International Ag Procédé et dispositif d'introduction de gaz dans des liquides
WO2014012814A1 (fr) * 2012-07-18 2014-01-23 Voith Patent Gmbh Système d'arrivée de pâte pour papier de sécurité
WO2014200353A1 (fr) * 2013-06-14 2014-12-18 Ecoscrub Solutions B.V. Appareil de prétraitement pour dépoussiéreur par voie humide

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4306072C2 (de) * 1993-02-26 1994-12-08 Siemens Ag Vorrichtung zum Öffnen und Verschließen einer in einem Gehäuse vorhandenen Durchtrittsöffnung
DE10232693A1 (de) * 2002-07-18 2004-02-05 Siemens Ag Einspritzventil
JP6293643B2 (ja) * 2014-11-05 2018-03-14 株式会社東芝 ノズル装置及び処理装置
DE202017102911U1 (de) * 2017-05-15 2017-06-21 Evertz Hydrotechnik Gmbh & Co. Kg Vorrichtung zur Bewässerung von Fahrbahnen

Patent Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1561697A1 (de) * 1967-04-15 1970-10-01 Voith Gmbh J M Verfahren zum kontinuierlichen Verduennen und/oder Mischen von langen,zum Verspinnen neigende Fasern enthaltenen Suspensionen und Vorrichtung zum Durchfuehren dieses Verfahrens
US3782884A (en) * 1972-05-09 1974-01-01 Standard Oil Co Acid gas burner
JPS5721019U (fr) * 1980-07-10 1982-02-03
US5030326A (en) * 1988-05-13 1991-07-09 S.E.M.T.I. Societe A Responsabilite Limitee Paste-like mixture feed device
US5678766A (en) * 1995-07-19 1997-10-21 Peck; William E. Foam nozzle
DE19720528A1 (de) * 1997-05-16 1998-11-19 Gelhard Volker Dipl Ing Dipl W Vorrichtung und Verfahren zum Vermischen eines ersten Fluids mit einem zweiten Fluid
DE69915737T2 (de) 1998-06-29 2004-08-12 Voith Paper Patent Gmbh Verfahren und Vorrichtung zur Durchmissung von Faserstoffsuspensionen
US20020166645A1 (en) 1999-10-12 2002-11-14 Metso Paper Inc Method and arrangement for mixing pulp components in the manufacture of paper
DE10317865A1 (de) 2003-04-09 2004-10-21 Voith Paper Patent Gmbh Anordnung und Verfahren zum Zuführen einer zweiten Flüssigkeit zu einer Papierfaserstoffsuspension
WO2009109299A1 (fr) * 2008-03-05 2009-09-11 United Waters International Ag Procédé et dispositif d'introduction de gaz dans des liquides
WO2014012814A1 (fr) * 2012-07-18 2014-01-23 Voith Patent Gmbh Système d'arrivée de pâte pour papier de sécurité
WO2014200353A1 (fr) * 2013-06-14 2014-12-18 Ecoscrub Solutions B.V. Appareil de prétraitement pour dépoussiéreur par voie humide

Also Published As

Publication number Publication date
EP3962636A1 (fr) 2022-03-09
EP3962636B1 (fr) 2024-04-03
CN217266617U (zh) 2022-08-23
DE102019111122A1 (de) 2020-11-05

Similar Documents

Publication Publication Date Title
DE3741603C2 (fr)
DE69915810T2 (de) Verfahren und vorrichtung zum zuführen einer chemikalie in eine flüssigkeit
EP2566611B1 (fr) Procédé et installation de mélange
DE1561650A1 (de) Verfahren und Vorrichtung zur Zufuehrung von Aufschlaemmungen,insbesondere Papierstoff zu einer Papiermaschine
DE60032811T2 (de) Verfahren und vorrichtung zur mischung von faserstoffkomponenten für die herstellung von papier
DE2623648A1 (de) Stoffauflaufvorrichtung einer papiermaschine
EP1467018B1 (fr) Dispositif et procédé de mélange d'un liquide dans une suspension
EP2697428B1 (fr) Procédé et ensemble de pulvérisateurs pour introduire des produits chimiques et/ou des additifs dans un flux d'un procédé de préparation
DE1511218B2 (de) Papierbrei-aufgabevorrichtung fuer papiermaschinen
EP3962636B1 (fr) Buse d'injecteur, dispositif de mélange et utilisation de la buse d'injecteur
DE19859770A1 (de) Verfahren und Vorrichtung zum Mischen von Sroffsuspension
EP1033436B1 (fr) Procédé et dispositif pour le dosage d'un milieu fluide dans l'écoulement d'une suspension dans une caisse de tête
EP0536649A1 (fr) Dispositif pour déposer une sauce d'enduction sur une bande fibreuse
DE102011075558A1 (de) Mischdüse
DE3047998A1 (de) Stoffauflaufvorrichtung fuer eine papiermaschine
WO2009097877A1 (fr) Système pour mélanger et diluer
DE2835806C3 (de) Stoffauflauf für Maschinen zum Herstellen von Bahnen aus faserigem Material
WO2009097878A1 (fr) Système mélangeur et procédé approprié
DE102010029388A1 (de) Chemikalieneinmischung
DE4133501C2 (de) Vorrichtung zum Auftragen von Streichfarbe auf eine Faserstoffbahn
DE102009028405A1 (de) Mischvorrichtung
DE102021105475A1 (de) Einstellbare Querverteilung für einen Stoffauflauf
DE102010028574A1 (de) Mischanordnung
AT17640U1 (de) Konvertierungsbehälter für die fertigung des oberflächenleimmittels für eine faserbahn
DE19632672A1 (de) Stoffauflauf und Verfahren zum Verteilen einer Faserstoffsuspension im Stoffauflauf einer Papiermaschine

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20713538

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

ENP Entry into the national phase

Ref document number: 2020713538

Country of ref document: EP

Effective date: 20211130