CH656406A5 - DEVICE FOR THINKING OLD PAPER SUSPENSIONS BY FLOTATION. - Google Patents
DEVICE FOR THINKING OLD PAPER SUSPENSIONS BY FLOTATION. Download PDFInfo
- Publication number
- CH656406A5 CH656406A5 CH3060/82A CH306082A CH656406A5 CH 656406 A5 CH656406 A5 CH 656406A5 CH 3060/82 A CH3060/82 A CH 3060/82A CH 306082 A CH306082 A CH 306082A CH 656406 A5 CH656406 A5 CH 656406A5
- Authority
- CH
- Switzerland
- Prior art keywords
- mixing tube
- flotation
- suspension
- foam
- container
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1406—Flotation machines with special arrangement of a plurality of flotation cells, e.g. positioning a flotation cell inside another
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1412—Flotation machines with baffles, e.g. at the wall for redirecting settling solids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/24—Pneumatic
- B03D1/242—Nozzles for injecting gas into the flotation tank
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/24—Pneumatic
- B03D1/247—Mixing gas and slurry in a device separate from the flotation tank, i.e. reactor-separator type
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/30—Defibrating by other means
- D21B1/32—Defibrating by other means of waste paper
- D21B1/325—Defibrating by other means of waste paper de-inking devices
- D21B1/327—Defibrating by other means of waste paper de-inking devices using flotation 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
- D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
- D21F1/70—Pulp catching, de-watering, or recovering; Re-use of pulp-water by flotation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
- B03D1/00—Flotation
- B03D1/14—Flotation machines
- B03D1/1443—Feed or discharge mechanisms for flotation tanks
- B03D1/1462—Discharge mechanisms for the froth
-
- 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/64—Paper recycling
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biotechnology (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Description
Die Erfindung betrifft eine Einrichtung zum Deinken von 45 hen sein können. Der Abzug der Suspension erfolgt zwischen The invention relates to a device for deinking 45 hen can be. The suspension is withdrawn between
Altpapier-Suspensionen entsprechend dem Oberbegriff des der Leitwand 10 und Trennwand 14 durch die Abzugsöff- Waste paper suspensions in accordance with the preamble of the guide wall 10 and partition 14 through the exhaust opening
Patentanspruchs 1. Eine solche Einrichtung ist durch die nung 11, worauf die Suspension dem Injektor und Mischrohr Claim 1 Such a device is through the opening 11, whereupon the suspension the injector and mixing tube
DE-OS 27 26 578 bekanntgeworden. der nachgeschalteten Flotationszelle zugeführt wird (siehe DE-OS 27 26 578 become known. is fed to the downstream flotation cell (see
Fig. 2). Dazu ist jeweils eine hier nicht dargestellte Pumpe Fig. 2). For this purpose there is a pump, not shown here
Bei dieser bekannten Einrichtung erfolgt die Zuführung 50 vorgesehen. In this known device, the feed 50 is provided.
eines Luftflüssigkeitsgemisches durch das Mischrohr, wobei Der in Fig. 1 dargestellte Behälter 1 hat einen praktisch die Luft dem Mischrohr vorwiegend als Pressluft in einem durchgehenden kreisförmigen Querschnitt. an air-liquid mixture through the mixing tube, wherein the container 1 shown in FIG. 1 has practically the air to the mixing tube predominantly as compressed air in a continuous circular cross-section.
Ringraum zugegeben wird, der zwischen der Wandung des In Fig. 3 ist eine Variante der erfindungsgemäss anzuwen-das Mischrohr bildenden Rohres und einem kleineren zen- denden Injektor-Mischrohranordnung dargestellt. In diesem trisch in das Mischrohr eingeführten Flüssigkeitszufuhrrohr 55 Falle wird ein nach oben offenes sich dort trichterförmig ergebildet ist. Diese Einrichtung hat den Vorteil, dass der Be- weiterndes Mischrohr 9 verwendet, in das sich das düsenför-hälter in raumsparender Weise sehr viele Zellen aufnehmen mig verengende Zufuhrrohr 4' der Suspension mit seiner Düse kann. Es ist aber bei dieser Einrichtung das Problem noch 21 hinein erstreckt und zusammen mit dem Einsaugtrichter 23 nicht in zufriedenstellender Weise gelöst, die zu flotierende des Mischrohres 9 den Injektor 20 bildet. Annular space is added, which is shown between the wall of FIG. 3 shows a variant of the tube forming the mixing tube to be used according to the invention and a smaller, terminating injector mixing tube arrangement. In this liquid feed pipe 55, which is introduced into the mixing tube, an open top is formed there in a funnel shape. This device has the advantage that the widening mixing tube 9 is used, in which the nozzle-holding container can accommodate a large number of cells in a space-saving manner, and the supply tube 4 'of the suspension with its nozzle can be narrowed. However, in this device the problem still extends 21 and is not satisfactorily solved together with the suction funnel 23 which forms the injector 20 of the mixing tube 9 to be floated.
Suspension ausreichend mit feinverteilten Luftbläschen zu 60 Es kann jeweils noch zweckmässig ein Ablenkkegel 26 am versorgen. Boden des Flotationsbehälters in der Austrittsöffnung 19 des Sufficient suspension with finely divided air bubbles of 60. A deflection cone 26 can still be conveniently supplied in each case. Bottom of the flotation container in the outlet opening 19 of the
Die Aufgabe der Erfindung ist es nun, eine Einrichtung zu Mischrohres 9 bzw. Trichters 7 vorgesehen sein. The object of the invention is now to provide a device for mixing tube 9 or funnel 7.
schaffen, die sehr platzsparend und einfach aufzubauen ist Im dargestellten Ausführungsbeispiel wird praktisch eine und einen guten Flotationswirkungsgrad hat. Diese Aufgabe im wesentlichen vollständige kreiszylindrische Form des Bewird bei einer Einrichtung der eingangs genannten Art durch es hälters 1 verwendet. Es ist aber durchaus auch möglich, den die Merkmale des kennzeichnenden Teils des Patentan- Querschnitt des Behälters 1 als liegendes Oval auszuführen, spruchs I gelöst. Ebenso könnte insbesondere in seinem oberhalb der Suspen- create that is very space-saving and easy to set up In the illustrated embodiment, practically one and has a good flotation efficiency. This task essentially complete circular cylindrical shape of the container 1 used in a device of the type mentioned by it. But it is also entirely possible to design the features of the characterizing part of the patent cross section of the container 1 as a lying oval, claim I solved. Likewise, especially in its above the Suspen
Besonders zweckmässige Ausbildungen der erfmdungsge- sion befindlichen Bereich eine gerade Abdeckung vorgesehen Particularly expedient designs of the area located according to the invention provide a straight cover
3 3rd
656406 656406
sein. Es kommt im wesentlichen darauf an, dass die runde Form in seinem unteren Bereich vorliegt, um dort eine strömungsgünstige Ausbildung, die wegen der scharfen Umlen-kung besonders sinnvoll ist, zu gewährleisten. be. It is essential that the round shape is present in its lower area in order to ensure a streamlined design, which is particularly useful because of the sharp deflection.
Der Abstand der Austrittsöffnung 19 vom Behälterboden sollte etwa 10-40% des Innendurchmessers des Mischrohrs betragen, z.B. 40 mm bei 250 mm 0, falls ohne Druckquelle für die Flotationsluft gearbeitet wird. Das Verhältnis kann bei vorgesehener Druckquelle (Pressluft) auf 10% heruntergenommen werden. In Fig. 4 ist eine bevorzugte Variante dargestellt, bei der ohne die Zwischenwand der Fig. 1 gearbeitet wird und der Abzugsquerschnitt 1V der gereinigten Suspension als Schlitz direkt unterhalb des Wehrs 25' für den s Schaumabzug in die direkt unterhalb der Schaumrinne 13 verlaufende Abzugsleitung 42 hinein erfolgt. Dadurch wird der Flotationsvorgang nicht durch eine Zwischenwand behindert. The distance of the outlet opening 19 from the bottom of the container should be about 10-40% of the inside diameter of the mixing tube, e.g. 40 mm at 250 mm 0, if working without a pressure source for the flotation air. The ratio can be reduced to 10% with the intended pressure source (compressed air). FIG. 4 shows a preferred variant in which work is carried out without the intermediate wall of FIG. 1 and the discharge cross-section 1V of the cleaned suspension as a slot directly below the weir 25 'for the foam discharge into the discharge line 42 running directly below the foam channel 13 into it. The flotation process is not hindered by an intermediate wall.
Der in Fig. 1 bis 4 dargestellte Behälter 1 hat einen prak-io tisch durchgehenden kreisförmigen Querschnitt. The container 1 shown in Fig. 1 to 4 has a practically continuous circular cross-section.
C C.
3 Blatt Zeichnungen 3 sheets of drawings
Claims (6)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE3120202A DE3120202C2 (en) | 1981-05-21 | 1981-05-21 | Device for deinking waste paper through flotation |
Publications (1)
Publication Number | Publication Date |
---|---|
CH656406A5 true CH656406A5 (en) | 1986-06-30 |
Family
ID=6132869
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH3060/82A CH656406A5 (en) | 1981-05-21 | 1982-05-17 | DEVICE FOR THINKING OLD PAPER SUSPENSIONS BY FLOTATION. |
Country Status (6)
Country | Link |
---|---|
JP (1) | JPS5818495A (en) |
AT (1) | AT380906B (en) |
BR (1) | BR8202941A (en) |
CH (1) | CH656406A5 (en) |
DE (1) | DE3120202C2 (en) |
IT (2) | IT8253307V0 (en) |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3614933C1 (en) * | 1986-05-02 | 1987-10-22 | Voith Gmbh J M | Flotation tank or cell |
US5529190A (en) * | 1995-02-06 | 1996-06-25 | Ahlstrom Machinery, Inc. | Gas sparged hydrocyclone with foam separating vessel |
AT411155B (en) * | 2002-03-27 | 2003-10-27 | Andritz Ag Maschf | DEVICE FOR SEPARATING SOLIDS FROM LIQUIDS BY FLOTATION |
AT412216B (en) | 2003-01-24 | 2004-11-25 | Andritz Ag Maschf | METHOD AND DEVICE FOR VENTILATING SUSPENSIONS |
DE102008056040A1 (en) | 2008-11-05 | 2010-05-06 | Voith Patent Gmbh | Method for removing contaminants from aqueous fiber suspension, particularly waste paper suspension, involves introducing inner flow of gas in inner side of flow of fiber suspension, where open jet is formed at fiber suspension |
DE102008063780A1 (en) | 2008-12-18 | 2010-06-24 | Voith Patent Gmbh | Process for the removal of solids from a fiber suspension by flotation and flotation for its implementation |
DE102008064271A1 (en) | 2008-12-20 | 2010-07-01 | Voith Patent Gmbh | Process for the removal of solids from a fiber suspension by flotation and flotation for its implementation |
DE102008064270A1 (en) * | 2008-12-20 | 2010-07-01 | Voith Patent Gmbh | Flotation method for removing contaminants from aqueous fibrous material suspension by gas bubbles, involves supplying stream of fibrous material suspension along interference body after supplying stream of gas |
DE102009010698A1 (en) * | 2009-02-27 | 2010-09-02 | Voith Patent Gmbh | Flotation device for the removal of impurities by using gas bubbles, comprises flotation container, where mixing device is provided for supplying flow of gas |
DE102009015404A1 (en) | 2009-03-27 | 2010-09-30 | Voith Patent Gmbh | Method for removing solids from fibrous material suspension, involves partially bringing together cleaned pulp suspension streams before adding into flotation chambers that are communicatingly connected with one another |
DE102009040318A1 (en) | 2009-09-05 | 2011-03-10 | Voith Patent Gmbh | Method for removing impurities from waste paper suspension, involves forming suspension jet, and pulling surface of suspension jet accessible to supplied gas during or after discharge from jet forming channel |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2914392C2 (en) * | 1979-04-10 | 1980-10-23 | E. Et M. Lamort S.A., Vitry-Le-Francois | Process and device for deinking pulp suspensions |
-
1981
- 1981-05-21 DE DE3120202A patent/DE3120202C2/en not_active Expired
-
1982
- 1982-05-04 AT AT172682A patent/AT380906B/en not_active IP Right Cessation
- 1982-05-17 CH CH3060/82A patent/CH656406A5/en not_active IP Right Cessation
- 1982-05-19 BR BR8202941A patent/BR8202941A/en unknown
- 1982-05-20 IT IT5330782U patent/IT8253307V0/en unknown
- 1982-05-20 IT IT6765982A patent/IT1156010B/en active
- 1982-05-21 JP JP57086354A patent/JPS5818495A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
AT380906B (en) | 1986-07-25 |
ATA172682A (en) | 1985-12-15 |
IT8253307V0 (en) | 1982-05-20 |
DE3120202A1 (en) | 1982-12-09 |
DE3120202C2 (en) | 1986-06-26 |
IT1156010B (en) | 1987-01-28 |
JPS5818495A (en) | 1983-02-03 |
BR8202941A (en) | 1983-05-03 |
JPH0220755B2 (en) | 1990-05-10 |
IT8267659A0 (en) | 1982-05-20 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PL | Patent ceased |