EP1462568A1 - Classeur pour la purification d'une suspension fibreuse - Google Patents

Classeur pour la purification d'une suspension fibreuse Download PDF

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Publication number
EP1462568A1
EP1462568A1 EP04006319A EP04006319A EP1462568A1 EP 1462568 A1 EP1462568 A1 EP 1462568A1 EP 04006319 A EP04006319 A EP 04006319A EP 04006319 A EP04006319 A EP 04006319A EP 1462568 A1 EP1462568 A1 EP 1462568A1
Authority
EP
European Patent Office
Prior art keywords
rotor
sorter according
separation unit
dilution water
sorter
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.)
Withdrawn
Application number
EP04006319A
Other languages
German (de)
English (en)
Inventor
Helmuth Dipl.-Ing. Dr. Gabl
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.)
Gabl Helmut
Original Assignee
Andritz 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 Andritz AG filed Critical Andritz AG
Publication of EP1462568A1 publication Critical patent/EP1462568A1/fr
Withdrawn legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/02—Straining or screening the pulp
    • D21D5/023—Stationary screen-drums
    • D21D5/026—Stationary screen-drums with rotating cleaning foils

Definitions

  • the invention relates to a sorter for cleaning a fiber suspension according to the preamble of claim 1.
  • Sorters are machines used in the paper industry to clean one Stock suspension consisting of water, fibrous materials and dirt particles.
  • an inlet stream is passed over a sieving device, the acceptance stream, consisting of water and fibers, flows through the sieve.
  • a partial flow called reject stream consisting of water, fibers and contaminants, is in the generally deducted at the end opposite the feed stream. Consequently the sorters separate solids present in liquid Particles. In contrast, the liquid becomes a solid during filtration separated.
  • such a sorter is rotationally symmetrical and consists of a housing with a tangentially arranged inlet, a cylindrical screen basket, usually with holes or vertical slots, and a rotating rotor.
  • the task of the rotor is to keep it clear the sieve slots, which is achieved by blades rotating slightly on the surface of the sieve becomes.
  • the acceptance stream is in a so-called acceptance room, which is often conical is collected and subtracted radially.
  • the reject stream is general at the point of the strainer basket opposite the inlet in a mostly ring-shaped one Rejektraum guided and subtracted tangentially from this.
  • Such a sorter is e.g. known from US 4,268,381.
  • the rotor in these known sorters is for a uniform flow against the screen designed and has the shape of a parabola, so that the axial Flow velocity within the strainer basket assuming a uniform one Outflow through the sieve remains constant.
  • the shape of the Rotors can also be approximated via a cone shape.
  • sorters are also known to design sorters as multi-stage sorters that comprise a plurality of disconnection units connected in series.
  • the object of the present invention is to provide a sorter in which a further improvement of the flow conditions and thus a reduction in the energy used with increased production and Dirt separation is achieved.
  • Sorters are described in the subclaims.
  • the sorter according to the invention is characterized in that the reject outlet is arranged in the region of the maximum diameter of the rotor and that in the area of the maximum diameter of the rotor one or more device (s) is / are arranged to interrupt the axial flow.
  • sorters in the majority, whereby sorters according to the invention are also meant, which have only one device included to interrupt the axial flow.
  • the devices for interrupting the axial flow can be on Housing of the separation unit or arranged on the strainer and / or on the rotor of the Be arranged sorter.
  • both sides i.e. both on the housing and on the rotor
  • Interrupt devices of the axial flow are possible.
  • the devices are preferably one or more axial Flow interrupters rings.
  • the flow interrupter ring can, depending on the embodiment designed continuously or in the form of individual segments be or have interruptions.
  • the flow interrupter ring (or the flow interrupter rings) can be adjustable so that the size of the one created by the interrupter ring Passage for the reject is changeable.
  • the flow interrupter ring can be adjusted, for example, in the manner of a photo iris be executed.
  • the flow interrupter ring can also be adjusted statically (e.g. in the form of statically adjustable ring segments).
  • the outside diameter of a flow interrupter ring arranged on the rotor side preferably has a tooth-shaped profile.
  • Another preferred embodiment of the sorter according to the invention is characterized in that in the area of the reject outlet, in particular directly below that, at least one feed for dilution water is arranged is.
  • One or more feeds for dilution water can be provided, which are arranged on the housing of the separation unit or on the screen basket and / or on Rotor can be arranged. In case of arranging a feed for Dilution water at the rotor, this feed is preferred by an inside the line located in the rotor.
  • the possibly several inlets for dilution water can be aligned in this way be that dilution water in the direction of the rotor and / or against the Rotor running direction can be introduced.
  • the rotational movement of the fiber suspension can thus be reduced.
  • the loosening of the suspension can be improved by swirling the suspension become.
  • the sorter is at least one supply for dilution water with a device for interruption coupled to the axial flow.
  • the feed for Dilution water protrude into the space between the housing and the rotor and thus serve as a device for interrupting the axial flow.
  • the suspension consistency is the same as before described, adjusted by means of an intermediate dilution. It has proven to be cheap emphasized the concentration of the speck portion by interposing to counteract a deflaking unit.
  • the separation unit of the sorter according to the invention accordingly comprises preferably a deflaking unit.
  • the deflaking unit is advantageous in shape of one or more arranged on the housing or screen basket and / or on the rotor Rings designed.
  • the shape of the internals used corresponds to known types, with additional hydraulic guide elements introduced be able to adjust the pressure differences.
  • the sorter according to the invention can preferably have two in a manner known per se or comprise a plurality of separation units arranged one after the other, all of which Separation units comprise a common rotor, one for each separation unit Parabolic shape adapted to the flow conditions in the separation unit or has parabolic segment shape.
  • each separation unit is preferably at least twice as large as that Sum of the heights of the separation units connected to the separation unit, that is, in the case of a sorter with three separation units, the height of the first stage at least 2/3 of the total height of the unit and that of the second stage is at least 2/9 of the total height.
  • Sorter in the range of maximum diameter one or more Devices for interrupting the axial flow, as described above, arranged.
  • each separation unit in the area of the reject outlet or below it at least one feed for dilution water is arranged.
  • the supply for dilution water in the lower limit of the rotor segment of a separation unit so that the dilution water in the space below the rotor segment (and so that it is released into the area of the reject outlet or below it).
  • the supply for dilution water can be in the upper Area of the rotor segment of the next separation unit can be arranged.
  • a multi-stage sorter with at least three separation units is preferably at least one deflaking unit, in particular at the transition from the second to the third separation unit.
  • Sorter preferably one or more of the features of the in EP 1 122 358 A2, EP 1 124 002 A2 and EP 1 124 003 A2 sorters.
  • the sorter 1 comprises an inlet connection in a manner known per se 2, through which a fiber suspension is fed for cleaning.
  • an installation 3 is provided, which is shown here as a truncated cone is.
  • the fibrous suspension occurs in the space between the parabolic Rotor 4 and sieve 5 and is through the sieve into the acceptance room 6 funded.
  • the housing of the acceptance room is in this embodiment in performed in a conventional manner double conical.
  • With the reference number 7 is the Accepted outlet.
  • the reject is discharged via a reject outlet 8.
  • Figure 2 are devices or device parts that with those of Embodiment of the prior art according to Figure 1 are identical to the same reference numerals.
  • the sorter 1 consists of three Separation units 1 ', 1 "and 1"'.
  • the three separation units 1 ', 1 "and 1'” comprise a common rotor, the respective sections 4 ', 4 "and 4"' adapted to the flow conditions in the respective separation unit parabolic or in the form of a paraboloid stump are designed.
  • the sections of the rotor can also be frustoconical or approximate to the shape of a parabola.
  • Each separation unit has a reject outlet (9 ', 9 ", 9"').
  • the reject of the first or second separation unit is simultaneously the inlet for the next separation unit.
  • the reject of the third and last separation unit is discharged via the reject outlet 8.
  • 10 in FIG. 2 denotes a line for dilution water arranged inside the rotor, the outlets of which will be described in more detail below.
  • FIGS. 3 and 4 now show preferred configurations of a reject outlet (in this case the reject outlet 9 ') in an enlargement of that in the Figure 2 shown dash-dotted cutout.
  • the adjustment ring can, like explained above, e.g. adjustable in the form of a photo iris (indicated by the double arrow).
  • the outer diameter of the adjusting ring preferably has or its segments a tooth-shaped profile.
  • both on the housing side and on the rotor sections 4 'or 4 "in the area of the reject outlet 9' or below of which feeds for dilution water 10a ', 10b' and 10c 'are provided.
  • the feed 10a ' is in the lower limit of the rotor segment 4' of the first Separation unit 1 'arranged.
  • the feed 10b ' is in the upper region of the rotor segment 4 "of the second separation unit 1" arranged.
  • the feeds 10a 'and 10b ' can be arranged through a line 10 arranged inside the rotor (see Figure 2) are fed.
  • the feed 10c ' is arranged, for example, in the region of a flange 11 between the first separation unit 1' and the second separation unit 1 "and is fed by a line (not shown). With the feeds for dilution water 10a ', 10b' and 10c ', the consistency of the fiber suspension flowing into the next separation unit can be efficiently regulated.
  • the embodiment of the reject outlet 9 'shown in FIG. 4 differs from the embodiment according to FIG. 3 in that in addition to Adjustment ring 12a 'a flow interrupter ring 12b' is arranged on the housing side.
  • the housing-side feed 10c' arranged for dilution water, i.e. the supply for dilution water and the flow interrupter ring are coupled together.
  • additional feeds for Dilution water can be provided on the rotor, as shown in FIG. 3.
EP04006319A 2003-03-27 2004-03-17 Classeur pour la purification d'une suspension fibreuse Withdrawn EP1462568A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT4862003 2003-03-27
AT0048603A AT413391B (de) 2003-03-27 2003-03-27 Sortierer zur reinigung einer fasersuspension

Publications (1)

Publication Number Publication Date
EP1462568A1 true EP1462568A1 (fr) 2004-09-29

Family

ID=32777541

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04006319A Withdrawn EP1462568A1 (fr) 2003-03-27 2004-03-17 Classeur pour la purification d'une suspension fibreuse

Country Status (7)

Country Link
US (1) US7296684B2 (fr)
EP (1) EP1462568A1 (fr)
CN (1) CN1542220A (fr)
AT (1) AT413391B (fr)
BR (1) BRPI0400784A (fr)
CA (1) CA2459625A1 (fr)
NO (1) NO20041102L (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011054694A1 (fr) 2009-10-26 2011-05-12 Basf Se Procédé de recyclage de produits de papier enduits et/ou revêtus de polymères biodégradables
EP4088898A1 (fr) 2021-05-14 2022-11-16 ecobrain AG Procédé de fabrication de composants à partir de produits de papier déchiqueté revêtu de polymère

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006344136A (ja) * 2005-06-10 2006-12-21 Fanuc Ltd ロボット制御装置
SE530929C2 (sv) * 2007-04-19 2008-10-21 Sandvik Intellectual Property Stödstruktur för en vibrationsskikt samt en stödbärare hos densamma
FI126520B (en) * 2016-03-16 2017-01-31 Red Wire Oy Method of screening and screening device
FI20175776A1 (fi) 2017-08-31 2019-03-01 Andritz Oy Erotuslaite

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4697982A (en) * 1986-03-13 1987-10-06 Uniweld Inc. Rotary pulp screen of the horizontal type having pulp stock feed at different axial positions on the screen
EP0649940A1 (fr) * 1993-10-20 1995-04-26 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Procédé et dispositif pour l'épuration d'une pulpe de vieux papiers
WO1998046822A1 (fr) * 1997-04-14 1998-10-22 Sunds Defibrator Industries Ab Appareil de tamisage dote de moyens reducteurs de flux de rejet
WO1999032712A1 (fr) * 1997-12-19 1999-07-01 Valmet Fibertech Ab Dispositif de tamisage destine a des suspensions de fibres et dote d'un reducteur de debit stationnaire
WO2000050690A1 (fr) * 1999-02-26 2000-08-31 E & M Lamort Procede et moyens pour la filtration de la pate a papier

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4268381A (en) * 1979-05-03 1981-05-19 Uniweld Inc. Rotary pulp screening device of the vertical pressure type
US4267035A (en) * 1979-08-27 1981-05-12 The Black Clawson Company Pressurized rotary screening apparatus
CA1238604A (fr) * 1983-12-12 1988-06-28 Anthony W. Hooper Classeur a pate rotatif a pression verticale et a plusieurs tamis echelonnes le long du classeur
US5119953A (en) * 1990-04-02 1992-06-09 Celleco Hedemora Ab Pulp suspension screening and fractionation apparatus
US5096127A (en) * 1990-08-22 1992-03-17 Ingersoll-Rand Company Apparatus for pressurized screening of a fibrous material liquid suspension
SE509134C2 (sv) * 1997-04-14 1998-12-07 Sunds Defibrator Ind Ab Silanordning med rejektutspädning
SE511142C2 (sv) * 1997-12-19 1999-08-09 Sunds Defibrator Ind Ab Anordning med spädvätsketillförsel för silning av fibersuspensioner
US6571957B1 (en) * 2000-08-07 2003-06-03 Voith Sulzer Paper Technology North America, Inc. Screening apparatus for fiber suspension

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4697982A (en) * 1986-03-13 1987-10-06 Uniweld Inc. Rotary pulp screen of the horizontal type having pulp stock feed at different axial positions on the screen
EP0649940A1 (fr) * 1993-10-20 1995-04-26 Ishikawajima-Harima Jukogyo Kabushiki Kaisha Procédé et dispositif pour l'épuration d'une pulpe de vieux papiers
WO1998046822A1 (fr) * 1997-04-14 1998-10-22 Sunds Defibrator Industries Ab Appareil de tamisage dote de moyens reducteurs de flux de rejet
WO1999032712A1 (fr) * 1997-12-19 1999-07-01 Valmet Fibertech Ab Dispositif de tamisage destine a des suspensions de fibres et dote d'un reducteur de debit stationnaire
WO2000050690A1 (fr) * 1999-02-26 2000-08-31 E & M Lamort Procede et moyens pour la filtration de la pate a papier

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011054694A1 (fr) 2009-10-26 2011-05-12 Basf Se Procédé de recyclage de produits de papier enduits et/ou revêtus de polymères biodégradables
US8679826B2 (en) 2009-10-26 2014-03-25 Basf Se Method for recycling paper products coated with polyester polymers
EP4088898A1 (fr) 2021-05-14 2022-11-16 ecobrain AG Procédé de fabrication de composants à partir de produits de papier déchiqueté revêtu de polymère

Also Published As

Publication number Publication date
NO20041102L (no) 2004-09-28
BRPI0400784A (pt) 2004-11-23
ATA4862003A (de) 2005-07-15
AT413391B (de) 2006-02-15
US20040195168A1 (en) 2004-10-07
CA2459625A1 (fr) 2004-09-27
CN1542220A (zh) 2004-11-03
US7296684B2 (en) 2007-11-20

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