EP1063347B1 - Verfahren zur dosierbaren Verdünnung der Faserstoffsuspension in oder vor einem Stoffauflauf einer Papiermaschine - Google Patents
Verfahren zur dosierbaren Verdünnung der Faserstoffsuspension in oder vor einem Stoffauflauf einer Papiermaschine Download PDFInfo
- Publication number
- EP1063347B1 EP1063347B1 EP00106900A EP00106900A EP1063347B1 EP 1063347 B1 EP1063347 B1 EP 1063347B1 EP 00106900 A EP00106900 A EP 00106900A EP 00106900 A EP00106900 A EP 00106900A EP 1063347 B1 EP1063347 B1 EP 1063347B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- water
- filter
- dilution
- filtrate
- white water
- 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
Links
Images
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
- D21F1/08—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
- processes of this kind are used to produce paper to be able to influence the operation of the headbox in a targeted manner.
- Dilution water may only to a limited extent fibers or other solids contain, because otherwise at the relatively sensitive metering disorders would occur.
- the invention is therefore an object of the invention to provide a method with which particularly economical way the dilution water for the stated purpose for Can be made available.
- the inventive method provides a very economical solution to Provision of the required dilution water.
- that contains at one Pulp thickening, especially in the wet part of a paper machine White water a certain amount of fibers, fillers and chemicals.
- a paper machine White water a certain amount of fibers, fillers and chemicals.
- Modern paper mills will be at least a big part of the paper machine clarified white water and clarified as clear water at various points in attributed the production cycle.
- disc filters Such Devices are known for a variety of applications.
- a suitable filter aid formed a filter cake, which is suitable in Retention of particulate matter contained in white water.
- a filtering process is thus of one Basically differentiate screening process. In the initial area of a disc filter, that is, where a filter cake has not yet been able to build up, the proportion of Fibers and fines in the filtrate still relatively high.
- the headbox 1 supplied pulp suspension S is in a mixing pump. 8 formed by mixing the thick material S0 with the first white water SW1.
- the second white water SW 2 is introduced into a filter device 4.
- a disc filter used, which for the Implementation of the method is particularly suitable.
- the presentation is pure schematically and should only show the functions that this disc filter meets, if they are important for the process according to the invention.
- a suspension housing 6 is a rotor with at least one rotating filter disk 10 is arranged.
- the Filter disk is in turn divided into a number of segments 5, which at the Filtration absorb absorbed filtrate.
- the filter surface of these segments 5 consists mostly of a mesh, which is by immersion in the Suspension, here the second white water SW2, with pulp and other fines busy.
- a first filtrate, the turbid filtrate TF, recovered which differs from the later obtained clear filtrate KF by the larger proportion of Solid particles and fibers are different.
- the turbid filtrate TF and the clear filtrate KF, to be discharged separately is located in the middle of the Rotor a fixed control head 7.
- the attached to the surfaces of the segments 5 Filter cake is removed as a coarse fraction GF from these surfaces before the segments 5 immerse again in the suspension to be filtered.
Landscapes
- Paper (AREA)
Description
1. Siebwasser SW 1 | 5000 ppm |
2. Siebwasser SW 2 | 2500 ppm |
Trübfiltrat TF | 300 ppm |
Klarfiltrat KF | 50 ppm |
Faserstoffsuspension S | 3.5 % |
Claims (8)
- Verfahren zur dosierbaren Verdünnung der Faserstoffsuspension (S) in oder vor einem Stoffauflauf (1) einer Papiermaschine (3), wozu an mehreren Dosierstellen (2) dosierbar Verdünnungswasser (W) in die Faserstoffsuspension (S) eingeführt wird und wobei das Verdünnungswasser (W) aus dem bei einer Papierstoffeindickung anfallenden Siebwasser stammt,
dadurch gekennzeichnet, daß das Siebwasser durch eine Filtervorrichtung (4) in der Weise behandelt wird, daß zuerst ein Trübfiltrat (TF) anfällt, das abgezogen und als Verdünnungswasser (W) verwendet wird. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, daß als Filtervorrichtung (4) ein Scheibenfilter mit mindestens einer in Segmente (5) aufgeteilten Filterscheibe (9) verwendet wird. - Verfahren nach Anspruch 1,
dadurch gekennzeichnet, daß als Filtervorrichtung (4) eine Filterpresse verwendet wird. - Verfahren nach Anspruch 1, 2 oder 3,
dadurch gekennzeichnet, daß in der Filtervorrichtung (4) Siebwasser aus der dem Stoffauflauf (1) zugehörigen Papiermaschine (3) behandelt wird. - Verfahren nach Anspruch 4,
dadurch gekennzeichnet, daß das 2. Siebwasser (SW2) der Papiermaschine (3) behandelt wird. - Verfahren nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, daß das Trübfiltrat (TF) einen Feststoffgehalt zwischen 100 ppm und 500 ppm aufweist. - Verfahren nach Anspruch 6,
dadurch gekennzeichnet, daß das in der Filtervorrichtung (4) behandelte Siebwasser einen Feststoffgehalt aufweist, der mindestens doppelt so hoch ist wie der des Trübfiltrates. - Verfahren nach einem der voranstehenden Ansprüche,
dadurch gekennzeichnet, daß das in der Filtervorrichtung (4) behandelte Siebwasser einen Feststoffgehalt von mindestens 600 ppm aufweist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19928488 | 1999-06-22 | ||
DE19928488A DE19928488C1 (de) | 1999-06-22 | 1999-06-22 | Verfahren zur dosierbaren Verdünnung der Faserstoffsuspension in oder vor einem Stoffauflauf einer Papiermaschine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1063347A1 EP1063347A1 (de) | 2000-12-27 |
EP1063347B1 true EP1063347B1 (de) | 2005-08-03 |
Family
ID=7912097
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP00106900A Expired - Lifetime EP1063347B1 (de) | 1999-06-22 | 2000-03-31 | Verfahren zur dosierbaren Verdünnung der Faserstoffsuspension in oder vor einem Stoffauflauf einer Papiermaschine |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1063347B1 (de) |
AT (1) | ATE301208T1 (de) |
CA (1) | CA2312301A1 (de) |
DE (2) | DE19928488C1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007042260B4 (de) | 2007-09-06 | 2012-09-27 | Leica Microsystems Cms Gmbh | Objektivwechsler und ein Mikroskop |
DE102011088063A1 (de) * | 2011-12-09 | 2013-06-13 | Voith Patent Gmbh | Klarfiltrat-Behandlung |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
SE457772B (sv) * | 1987-05-15 | 1989-01-30 | Harry Nilsson | Filter foer koncentrering av suspensioner |
DE3829177A1 (de) * | 1987-09-16 | 1989-03-30 | Kufferath Andreas Gmbh | Scheibeneindicker |
FI971126A (fi) * | 1997-03-18 | 1998-09-19 | Valmet Corp | Paperikoneen perälaatikon laimennusveden käsittely- ja kiertojärjestelmä |
DE29812108U1 (de) * | 1998-07-09 | 1998-10-08 | Voith Sulzer Papiertechnik Patent GmbH, 89522 Heidenheim | Misch- und Rezirkulationskreislauf |
-
1999
- 1999-06-22 DE DE19928488A patent/DE19928488C1/de not_active Expired - Fee Related
-
2000
- 2000-03-31 AT AT00106900T patent/ATE301208T1/de not_active IP Right Cessation
- 2000-03-31 EP EP00106900A patent/EP1063347B1/de not_active Expired - Lifetime
- 2000-03-31 DE DE50010863T patent/DE50010863D1/de not_active Expired - Fee Related
- 2000-06-20 CA CA002312301A patent/CA2312301A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
DE50010863D1 (de) | 2005-09-08 |
DE19928488C1 (de) | 2001-01-18 |
ATE301208T1 (de) | 2005-08-15 |
CA2312301A1 (en) | 2000-12-22 |
EP1063347A1 (de) | 2000-12-27 |
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