EP1069234B1 - Verfahren und Vorrichtung zum Ausbringen von Störstoffen aus einem Hydrozyklon - Google Patents
Verfahren und Vorrichtung zum Ausbringen von Störstoffen aus einem Hydrozyklon Download PDFInfo
- Publication number
- EP1069234B1 EP1069234B1 EP00112006A EP00112006A EP1069234B1 EP 1069234 B1 EP1069234 B1 EP 1069234B1 EP 00112006 A EP00112006 A EP 00112006A EP 00112006 A EP00112006 A EP 00112006A EP 1069234 B1 EP1069234 B1 EP 1069234B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- hydrocyclone
- dilution liquid
- added
- suspension
- addition point
- 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
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Classifications
-
- 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
- D21D5/18—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force
- D21D5/24—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force in cyclones
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C11/00—Accessories, e.g. safety or control devices, not otherwise provided for, e.g. regulators, valves in inlet or overflow ducting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/14—Construction of the underflow ducting; Apex constructions; Discharge arrangements ; discharge through sidewall provided with a few slits or perforations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
- B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
- B04C5/00—Apparatus in which the axial direction of the vortex is reversed
- B04C5/14—Construction of the underflow ducting; Apex constructions; Discharge arrangements ; discharge through sidewall provided with a few slits or perforations
- B04C5/18—Construction of the underflow ducting; Apex constructions; Discharge arrangements ; discharge through sidewall provided with a few slits or perforations with auxiliary fluid assisting discharge
Definitions
- the invention relates to a method according to the preamble of claim 1.
- hydrocyclones are well suited to removing heavy parts by centrifugal forces or concentrate light parts in fiber suspensions and by using one to lead the intended discharge opening out of the hydrocyclone.
- the operational safety especially the freedom from clogging of such hydrocyclones particularly important. Blockages can occur if the contaminants, e.g. in the area of the discharge opening provided for them, so collect and concentrate that there is a blockage. In many cases, a A compromise can be found between operational safety, i.e.
- a known way to To reduce the risk of constipation on heavy-duty hydrocyclones is that a dilution liquid is supplied.
- a water supply line opens into the Edge area of the hydrocyclone e.g. through slots in the circumferential direction in the Cyclone wall.
- the dilution liquid then whirls up the outer layers and must penetrate the heavy dirt already concentrated in it, resulting in a Backwashing heavy parts in the accept stream can result.
- the invention is based on the object of a method for applying To create contaminants from hydrocyclones, with which both a reliable Removal of the contaminants is possible, as well as a good separation effect.
- the dilution liquid is therefore not introduced into the Edge of the hydrocyclone, where blockage is expected, but in the middle, with axial Direction, and thus mainly in the core flow.
- the dilution liquid With a sufficiently large one Inflow velocity the dilution liquid reaches the conical area of the separating room and mixes through the effect of the ones prevailing there Gradually shear flow with the surrounding pulp suspension.
- the kind of Dilution leads to a gentle backwashing of the fibers in the accepted fabric without that the same thing happens with already concentrated heavy parts, since these are on the wall and are not affected by the dilution water addition. Without the measures according to the invention, some of those that have already been concentrated would be concentrated Heavy parts whirled up and get into the middle of the hydrocyclone. From there then discharged with the accepted material.
- FIG. 1 shows a hydrocyclone according to the invention, roughly schematically an inlet 2 for the paper fiber-containing suspension S and an accept material outlet 3 for the cleaned suspension, i.e. the accepted substance A.
- the suspension S to be cleaned becomes set in rotation and enters the separating part 6 with a separating cone 1, in which usually increases the speed of rotation again. This will the contained heavy parts ST concentrated on the inner wall of the separating cone 1 and go down into the reject discharge device 17.
- the addition point 5 intended for this has the narrowest Position 4 of the separating cone 1 is the distance a, which is preferably in axial Seen direction, is at most a few millimeters.
- this can Distance a up to 30% of the length L of the hydrocyclone.
- Another sensible one The requirement is that the axial distance to the inlet 2 be kept as large as possible e.g. at least 70% of the length L of the hydrocyclone.
- the heavy parts ST fall, after they have passed the narrowest point 4 of the separating cone 1, into the Discharge chamber 8 from which it, e.g. via a discharge device 17, as reject R be removed.
- This discharge can take place continuously or intermittently.
- the dilution liquid W is replaced by a simple one vertical inlet pipe 9 is added, which is an axial and at the addition point 5 against the discharge direction of the contaminants ST has an opening.
- Circumferential component Vu (see FIG. 5) is so low compared to the axial speed Vax to hold that the angle ⁇ between the resultant of the two vectors and the Axis does not exceed 30 °. Overall, with this type of Add dilution water to a much larger volume distributed and is therefore less harmful to the separation effect.
- the liquid W is particularly advantageously at a certain axial position in the Hydrocyclone entered. Then there is only one opening at the addition point 5. It may be possible to adjust their position in the axial direction.
- FIG. 2 shows a variant for carrying out the method Dilution liquid W via a curved inlet pipe 9 directly in the middle of the entered reject tube 11 below the separating cone 1. It is here the addition point 5 selected so that it is below the narrowest point 4, what but not necessarily so.
- FIG. 3 shows a further possibility for carrying out the method.
- the Dilution liquid W first placed in a flow insert 16 ', in the Inside there is a central displacement body 12, so that an annular Flow cross section arises.
- the ring-shaped jet easily penetrates the one above part of the separating cone. It is also indicated here by arrows, like that Heavy parts ST slide down into the discharge chamber 8 near the wall. she can do this without going through the flow of the dilution liquid into the core flow of the Hydrocyclones to be flushed.
- FIG. 4 shows an axial inflow of the Dilution liquid W through the central inlet pipe 9. It opens inside the Flow insert 16 "via an injector 13 into a central tube 14. This allows Parts of the suspension are sucked out of the hydrocyclone and in the middle again be added, which serves the stable operation and the fiber loss minimized.
- FIG. 6darsch A hydrocyclone similar to that in FIG. 1 is shown in a perspective view in FIG. 6darsch. More constructive details are visible, but also these Drawing is still greatly simplified.
- FIG. 7 essentially shows the lower part of FIG. 6 in an enlarged form. you thus recognizes more easily that the inlet pipe 9 is screwed in exactly in the middle and in one circular opening opens here above the narrowest point 4. It's easy too mount and can be adjusted axially. With the help of the axial adjustment is one better adjustment of the hydrocyclone to the existing conditions possible.
- the discharge chamber 8 of FIG. 8 has a slightly eccentrically inserted one Inlet pipe 9, but this remains in the radially inner region of the hydrocyclone.
- the outlet cross-section of the inlet pipe 9 keeps one from the wall of the hydrocyclone Distance b a, which is at least 10% of the inner diameter of the hydrocyclone on it Digit is. It must be guaranteed that the already concentrated Heavy parts can no longer be washed in by the dilution liquid.
- the Eccentricity can bring advantages in special cases, e.g. if the hydrocyclone is operated horizontally. It can also be made adjustable.
- the flow inserts shown should only show the principle. More usable Flow applications are conceivable. In particular, their dimensions can be determined by Invoice and simple tests tailored to the respective purpose become.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Cyclones (AREA)
- Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
- Paper (AREA)
Description
- Fig. 1
- die Durchführung des Verfahrens an Hand eines Schwerteil-Hydrozyklons in Seitenansicht, geschnitten;
- Fig. 2 - 4
- Varianten zur Zugabe der Verdünnungsflüssigkeit;
- Fig. 5
- ein Vektordiagramm von speziellen Geschwindigkeiten am Strahlrand der Verdünnungsflüssigkeit;
- Fig. 6
- eine perspektivische Ansicht eines erfindungsgemäßen Hydrozyklons;
- Fig. 7 und 8
- jeweils eine weitere Variante des unteren Teils des erfindungsgemäßen Hydrozyklons.
Claims (17)
- Verfahren zum Ausbringen von Störstoffen aus einer papierfaserhaltigen Suspension (S) unter Verwendung eines einen Abscheidekonus (1) aufweisenden Hydrozyklons, bei dem Verdünnungsflüssigkeit (W) im radial inneren Bereich des Hydrozyklons in die Suspension (S) zugegeben wird, und zwar in einem axialen Abstand (a) von der engsten Stelle des Abscheidekonus (1), der höchstens 30 % der Länge (L) des Hydrozyklons beträgt,
dadurch gekennzeichnet, dass die Verdünnungsflüssigkeit (W) mit einer Strömungsrichtung, die gegen die axiale Austragsrichtung der Störstoffe aus dem Hydrozyklon gerichtet ist, zugegeben wird, und zwar ohne Drall oder lediglich mit einem Drall, dessen resultierender Strömungsgeschwindigkeitsvektor von Umfangsgeschwindigkeit (Vu) und Axialgeschwindigkeit (Vax) am Strahlrand einen Winkel (α) zur Achse von höchstens 30° hat. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, dass die Verdünnungsflüssigkeit (W) mit einem glatten Strahl zugegeben wird, - Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass die Verdünnungsflüssigkeit (W) in einem runden Strahl zugegeben wird. - Verfahren nach Anspruch 1 oder 2,
dadurch gekennzeichnet, dass die Verdünnungsflüssigkeit (W) in einem ringförmigen Strahl zugegeben wird. - Verfahren nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass die Verdünnungsflüssigkeit (W) mit Hilfe eines Injektors (13) in das Zentrum zugegeben wird und dass der Injektor (13) aus dem ringförmigen Bereich um die Zugabestelle (5) herum ansaugt. - Verfahren nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass die Verdünnungsflüssigkeit (W) mit einer Axialgeschwindigkeit von mindestens 4 m/s zugegeben wird. - Verfahren nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, dass aus einer papierfaserhaltigen Suspension (S) eine Leichtfraktion als Gutstoff (A) gebildet wird und Schwerteile (ST) als Schwerfraktion ausgeschieden werden. - Hydrozyklon zur Durchführung des Verfahrens nach einem der Ansprüche 1 bis 5 mit einem Einlauf (2) für die zu reinigende Suspension (S), einem
Gutstoffauslauf (3) für die gereinigte Suspension, einem Abscheideteil (6), an den direkt oder indirekt eine Rejektaustragsvorrichtung (17) für die Schwerteile angeschlossen ist, wobei der Hydrozyklon mindestens einen Anschluss für die Zugabe von Verdünnungsflüssigkeit (W) aufweist, wobei die Zugabestelle (5) im radial inneren Bereich des Hydrozyklons liegt,
dadurch gekennzeichnet, dass die Zugabestelle (5) mindestens eine Öffnung hat, deren Ausflussrichtung axial und entgegen der Austragsrichtung der Störstoffe gerichtet ist. - Hydrozyklon nach Anspruch 8,
dadurch gekennzeichnet, dass die Zugabestelle (5) an einer Stelle liegt, die vom Einlauf (2) der Suspension (S) in den Hydrozyklon in axialer Richtung mindestens 70 % der Länge (L) des Hydrozyklons entfernt ist. - Hydrozyklon nach Anspruch 9,
dadurch gekennzeichnet, dass der Abscheideteil (6) einen Abscheidekonus (1) enthält. - Hydrozyklon nach Anspruch 8, 9 oder 10,
dadurch gekennzeichnet, dass die Zugabestelle (5) Teil eines Strömungseinsatzes (16, 16', 16") ist, der in den Hydrozyklon eingesetzt ist. - Hydrozyklon nach Anspruch 11,
dadurch gekennzeichnet, dass der Strömungseinsatz (16, 16', 16") gegen einen anderen Strömungseinsatz austauschbar ist, welcher bezüglich seiner Strömungswirkung anders ausgestaltet ist. - Hydrozyklon nach Anspruch 8, 9, 10, 11 oder 12,
dadurch gekennzeichnet, dass der Querschnitt der Öffnung verstellbar ist. - Hydrozyklon nach einem der Ansprüche 8 bis 13,
dadurch gekennzeichnet, dass die Position der Öffnung verstellbar ist. - Hydrozyklon nach einem der Ansprüche 8 bis 14,
dadurch gekennzeichnet, dass die Zugabestelle (5) konzentrisch mit der Mitte des Hydrozyklons angeordnet ist. - Hydrozyklon nach einem der Ansprüche 8 bis 14,
dadurch gekennzeichnet, dass die Zugabestelle (5) exzentrisch zur Mitte des Hydrozyklons und in einem Abstand (b) von der Innenwand des Hydrozyklons angeordnet ist, der mindestens 10 % des Innendurchmessers des Hydrozyklons an dieser Stelle beträgt. - Hydrozyklon nach einem der Ansprüche 8 bis 16,
dadurch gekennzeichnet, dass die Zugabestelle (5) durch die Mündungsöffnung eines Zulaufrohres (9) gebildet wird, welches unterhalb des engsten Querschnittes des Abscheideteils (6) in den Hydrozyklon eingeführt wird.
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19931166 | 1999-07-06 | ||
DE19931166 | 1999-07-06 | ||
DE20004255U | 2000-03-07 | ||
DE20004255U DE20004255U1 (de) | 1999-07-06 | 2000-03-07 | Hydrozyklon |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1069234A1 EP1069234A1 (de) | 2001-01-17 |
EP1069234B1 true EP1069234B1 (de) | 2004-05-26 |
Family
ID=26054071
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00112006A Expired - Lifetime EP1069234B1 (de) | 1999-07-06 | 2000-06-02 | Verfahren und Vorrichtung zum Ausbringen von Störstoffen aus einem Hydrozyklon |
Country Status (4)
Country | Link |
---|---|
US (1) | US6284096B1 (de) |
EP (1) | EP1069234B1 (de) |
AT (1) | ATE267909T1 (de) |
ES (1) | ES2220296T3 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013117342A1 (de) | 2012-02-10 | 2013-08-15 | Andritz Energy & Environment Gmbh | Hydrozyklon mit feinstoffabreicherung im zyklonunterlauf |
Families Citing this family (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7736501B2 (en) | 2002-09-19 | 2010-06-15 | Suncor Energy Inc. | System and process for concentrating hydrocarbons in a bitumen feed |
CA2471048C (en) | 2002-09-19 | 2006-04-25 | Suncor Energy Inc. | Bituminous froth hydrocarbon cyclone |
DE102004045823A1 (de) * | 2004-09-22 | 2006-03-23 | Voith Paper Patent Gmbh | Verfahren zum Fraktionieren einer wässrigen Papierfasersuspension sowie Hydrozyklon zur Durchführung des Verfahrens |
SE529771C2 (sv) * | 2005-04-29 | 2007-11-20 | Gl & V Man Hungary Kft Hermina | Hydrocyklonenhet och metod för separering av en fibermassasuspension innehållande relativt tunga föroreningar |
DE202008018358U1 (de) | 2008-11-14 | 2013-04-10 | Voith Patent Gmbh | Hydrozyklon |
DE102008057339A1 (de) * | 2008-11-14 | 2010-05-20 | Voith Patent Gmbh | Hydrozyklon |
CA2689021C (en) | 2009-12-23 | 2015-03-03 | Thomas Charles Hann | Apparatus and method for regulating flow through a pumpbox |
JP2012056016A (ja) * | 2010-09-09 | 2012-03-22 | Matluster Technocracy Corp | 湿式分離装置及びこれを用いた研磨材回収システム |
FI123014B (fi) * | 2010-11-11 | 2012-09-28 | Metso Paper Inc | Pyörrepuhdistimen pohjalaimenninrakenne ja menetelmä pyörrepuhdistimen pohjalaimenninrakenteessa |
DE102010063196A1 (de) | 2010-12-16 | 2012-06-21 | Voith Patent Gmbh | Hydrozyklon |
AT512479B1 (de) | 2012-02-10 | 2013-11-15 | Andritz Energy & Environment Gmbh | Verfahren zur feinstoffreduktion im rea-gips |
RU2538733C2 (ru) * | 2012-11-27 | 2015-01-10 | Закрытое акционерное общество "СОМЭКС" | Гидроциклонная установка с регулируемыми конструктивными параметрами |
SE538725C2 (sv) | 2014-06-26 | 2016-11-01 | Valmet Oy | Ångavskiljningsenhet och system för hydrolysförfarande innefattande en ångavskiljningsenhet |
DE102015002683A1 (de) * | 2014-08-14 | 2016-02-18 | Repa Boltersdorf Gmbh | Verfahren zum Behandeln eines Stoffgemenges aus unterschiedlichen Materialien, Vorrichtung zur Durchführung dieses Verfahrens und ein Zyklon |
DE102016122225B4 (de) | 2016-11-18 | 2018-11-08 | Voith Patent Gmbh | Hydrozyklonanordnung |
DE102018122808A1 (de) | 2018-09-18 | 2020-03-19 | Voith Patent Gmbh | Steuerverfahren einer Reinigungsvorrichtung mit Schwerteil-Abscheider |
CN113272069B (zh) | 2019-01-10 | 2023-04-21 | 维美德技术有限公司 | 水力旋流器废料室 |
WO2020157383A1 (en) * | 2019-01-31 | 2020-08-06 | Andritz Oy | A reject chamber of a centrifugal cleaner and a centrifugal cleaner |
DE102022110164A1 (de) | 2021-08-26 | 2023-03-02 | Voith Patent Gmbh | Hydrozyklonanordnung |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE346705B (de) * | 1970-04-01 | 1972-07-17 | N Wikdahl | |
US3720315A (en) * | 1971-01-18 | 1973-03-13 | Clark & Vicario Corp | Stabilizing papermaking system cleaner operation |
US3785489A (en) * | 1971-07-14 | 1974-01-15 | Celleco Ab | Cyclone separator with underflow diluter |
US4151083A (en) * | 1974-09-10 | 1979-04-24 | Dove Norman F | Apparatus and method for separating heavy impurities from feed stock |
US4356084A (en) * | 1979-04-06 | 1982-10-26 | The Black Clawson Company | Self-sealing valve assembly to facilitate unplugging of a centrifugal cleaner |
CA1138378A (en) * | 1980-03-13 | 1982-12-28 | Jacek J. Macierewicz | Axial elutriator for the reject outlet of a hydrocyclone |
FR2478489B1 (fr) * | 1980-03-21 | 1985-08-30 | Centre Tech Ind Papier | Procede et dispositif pour la separation de particules dans un fluide, notamment pour l'epuration de suspensions papetieres |
US5069751A (en) * | 1990-08-09 | 1991-12-03 | Kamyr, Inc. | Hydrocyclone deinking of paper during recycling |
US6109451A (en) * | 1998-11-13 | 2000-08-29 | Grimes; David B. | Through-flow hydrocyclone and three-way cleaner |
-
2000
- 2000-06-02 EP EP00112006A patent/EP1069234B1/de not_active Expired - Lifetime
- 2000-06-02 AT AT00112006T patent/ATE267909T1/de active
- 2000-06-02 ES ES00112006T patent/ES2220296T3/es not_active Expired - Lifetime
- 2000-07-05 US US09/610,616 patent/US6284096B1/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013117342A1 (de) | 2012-02-10 | 2013-08-15 | Andritz Energy & Environment Gmbh | Hydrozyklon mit feinstoffabreicherung im zyklonunterlauf |
Also Published As
Publication number | Publication date |
---|---|
ATE267909T1 (de) | 2004-06-15 |
US6284096B1 (en) | 2001-09-04 |
EP1069234A1 (de) | 2001-01-17 |
ES2220296T3 (es) | 2004-12-16 |
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