WO2010066514A2 - Konstantteil-sortierung - Google Patents
Konstantteil-sortierung Download PDFInfo
- Publication number
- WO2010066514A2 WO2010066514A2 PCT/EP2009/064526 EP2009064526W WO2010066514A2 WO 2010066514 A2 WO2010066514 A2 WO 2010066514A2 EP 2009064526 W EP2009064526 W EP 2009064526W WO 2010066514 A2 WO2010066514 A2 WO 2010066514A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sorting device
- reject
- stream
- consistency
- sorting
- Prior art date
Links
- 238000012216 screening Methods 0.000 title abstract 5
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 9
- 239000000835 fiber Substances 0.000 claims abstract description 8
- 239000000725 suspension Substances 0.000 claims abstract description 5
- 238000004519 manufacturing process Methods 0.000 claims abstract description 3
- 238000004140 cleaning Methods 0.000 claims description 17
- 239000000945 filler Substances 0.000 claims description 5
- 239000000123 paper Substances 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 2
- 239000002657 fibrous material Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000007872 degassing Methods 0.000 description 4
- 239000013505 freshwater Substances 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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
- D21D5/02—Straining or screening the pulp
-
- 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
- D21D5/26—De-aeration of paper stock
-
- 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
- D21F1/02—Head boxes of Fourdrinier machines
-
- 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 arrangement for producing a pulp suspension for the production of a paper, cardboard, tissue or another fibrous web from at least one, fiber and filler-containing high-consistency stream in
- Constant part of a machine for producing the fibrous web wherein at least one high-consistency stream is passed through at least one sorting device.
- Paper machine collected collected white water diluted and fed to the headbox.
- the streams are vented and passed through a three-stage sorting device for cleaning. This is relatively expensive.
- the object of the invention is therefore to reduce the cost of cleaning without affecting the quality of the fibrous web to be produced.
- this object is achieved in that the acceptance of the sorting device to the headbox of the machine and the reject of the
- Sorting device is returned at least partially upstream in a high consistency flow.
- the Rejückück the number of required sorting devices can be reduced in each stream.
- devices for cleaning or sorting the unreturned reject can be made substantially smaller than usual.
- the purified stream is referred to as the acceptor of the sorting device and the rejected part of the stream as the reject.
- the reject In particular in the case of multi-layer or multi-layer drums, it is also possible to require a plurality of high-consistency streams, in which case a plurality of high-consistency streams are passed to the headbox and preferably each high-consistency stream is passed through a sorting device whose accept is returned to the headbox and its reject upstream to a high-consistency stream.
- the high-consistency stream before and / or in the headbox is diluted to the required level by mixing with a low-consistency stream.
- the low consistency stream should be at least predominantly, preferably exclusively white water, i. be formed in particular without or at least minimized addition of fresh water. It is advantageous if in the constant part and at least a low-consistency flow over a sorting device runs to the headbox and the Accept the sorting device to the headbox of the machine and the reject of the sorting device is at least partially returned upstream in the low-consistency current.
- the sorter should be the last sorting or cleaning device of the particular stream in front of the headbox, i. that the Accept is led directly to the headbox.
- the sorting device is set so that a maximum of 25%, preferably at most 10% of the current is incurred as a reject of the sorting device.
- the reject of the sorting device should at least predominantly be guided into the current flowing into the sorting device. This recycling can be done before the sorter or at the inlet of the same.
- the cost savings are particularly great if, at least during the predominant operating time, the entire reject of the sorting device is guided into the current flowing into the sorting device. Whether this is possible depends on the quality requirements of the pulp suspension, but also on its nature. In general, but especially when the entire reject is returned, it may be beneficial to discharge enriched contaminants to drain some or all of the reject over a short period of time. These discharge periods can be designed as required or regularly adjusted.
- sorting device is not sufficient, it is also possible to provide a further sorting or cleaning device into which preferably a maximum of 20%, in particular a maximum of 10% of the reject of the sorting device is guided. This sorting or cleaning device can because of the low
- FIG. 1 shows a single-stage sorter device and FIG. 2 shows a two-stage sorting device.
- the high-consistency stream 1 is in itself - A -
- a high-consistency stream 1 with a consistency of, for example, 3.5% is passed via a cleaning device 11 to a headbox 12.
- this cleaning device 11 is here a dilution to 0.5 to 2% by the addition of white water.
- the headbox 12 brings the pulp suspension via one or more nozzles on a forming wire of a following former for sheet formation.
- the resulting white water is collected and returned to the constant part.
- the use of white water to form a low-consistency stream 2 is not only associated with savings over the use of fresh water, but it can also be reused in the white water contained fiber and fillers.
- the consistency of the white water is about 0.2%.
- the collected white water contains relatively much air, which is why it is reduced in a degassing device 15 to a content of free air of less than 1% by volume.
- the degassing device 15 may be connected to a vacuum source, which sucks the gas from the white water. But there are also known centrifuges for degassing.
- the high-consistency 1 and the low-consistency stream 2 are passed via at least one pump each.
- a predilution of the high-consistency stream 1 can be carried out, for example, by means of a mixing device described in DE 100 500 109, in which the high-consistency stream 1 with the 3-15-fold flow velocity into the Low-consistency current 2 is passed.
- the already prediluted high consistency stream 1 is combined with the low consistency stream 2.
- the low-consistency stream 2 is fed into a low-consistency flow cross-distributor and the high-consistency stream 1 into a high-consistency flow cross-distributor of the headbox 12.
- Both transverse distributors are usually formed by a tapering tube, from which several partial streams are diverted in the direction of flow. The partial flow remaining at the narrow end of the transverse distributor is returned to the constant part of the paper machine for reuse.
- a transverse distributor is described, for example, in EP 0029 905, but also in DE 10 234 559.
- the headbox 12 can also, as described in EP 1 645 684 or DE 10 2004 049 261, have a control of the basis weight cross-section.
- Low consistency stream 1, 2 guided over a cleaning device 11 to a sorter 3 here in the form of a hole or Schlitzsortierers.
- the Accept 4, i. the current through the sorter 3 current 1, 2 is fed directly to the headbox 12.
- the reject 5, i. the sorted part of the stream 1, 2 is returned at least predominantly via a return line 6 in the, flowing into the sorter 3 stream 1, 2.
- This recycling can be done, for example, as in EP 1262594 without a pump
- the reject 5 is formed by approximately 10-25% of the stream 1, 2 flowing into the sorting device 3. This reject quantity also ensures higher contamination a safe function of the sorting device. 3
- the return line 6 has a branch line 7 with a valve 8, which leads the enriched impurities to the channel.
- the branch line 7 accounts for approximately 5 to 10% of the reject 5 of the sorting device 3 in a further sorting or cleaning device 9.
- the reject 14 of this further sorting or cleaning device 9 is guided out of the system and the accept 13 into the cleaning device 11 of the stream 1, 2 or the degassing device 15 of the white water.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP09744690A EP2379798A2 (de) | 2008-12-12 | 2009-11-03 | Konstantteil-sortierung |
BRPI0916105A BRPI0916105A2 (pt) | 2008-12-12 | 2009-11-03 | "peneiramento de um circuito de aproximação" |
CN200980149825.7A CN102282313B (zh) | 2008-12-12 | 2009-11-03 | 上浆系统-筛分装置 |
US13/157,904 US8313618B2 (en) | 2008-12-12 | 2011-06-10 | Screening in an approach flow system |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102008061970A DE102008061970A1 (de) | 2008-12-12 | 2008-12-12 | Konstantteil-Sortierung |
DE102008061970.1 | 2008-12-12 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US13/157,904 Continuation US8313618B2 (en) | 2008-12-12 | 2011-06-10 | Screening in an approach flow system |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2010066514A2 true WO2010066514A2 (de) | 2010-06-17 |
WO2010066514A3 WO2010066514A3 (de) | 2011-08-25 |
Family
ID=42168632
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2009/064526 WO2010066514A2 (de) | 2008-12-12 | 2009-11-03 | Konstantteil-sortierung |
Country Status (6)
Country | Link |
---|---|
US (1) | US8313618B2 (de) |
EP (1) | EP2379798A2 (de) |
CN (1) | CN102282313B (de) |
BR (1) | BRPI0916105A2 (de) |
DE (1) | DE102008061970A1 (de) |
WO (1) | WO2010066514A2 (de) |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008061970A1 (de) | 2008-12-12 | 2010-06-17 | Voith Patent Gmbh | Konstantteil-Sortierung |
DE102010038694A1 (de) * | 2010-07-30 | 2012-02-02 | Voith Patent Gmbh | Konstantteil |
CN102430273A (zh) * | 2011-12-19 | 2012-05-02 | 河南省江河纸业有限责任公司 | 新型上网浆料净化系统及上网浆料净化方法 |
CN106381749A (zh) * | 2016-11-30 | 2017-02-08 | 芬欧汇川(中国)有限公司 | 对来自纸机前槽的浆料进行稀释和输送的系统 |
CN114108353B (zh) * | 2021-12-10 | 2024-03-01 | 安德里茨(中国)有限公司 | 筛选系统 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1983002293A1 (en) * | 1981-12-30 | 1983-07-07 | Nils Anders Lennart Wikdahl | Method and plant for deaerating fibre suspensions |
EP1262594A1 (de) * | 2001-05-29 | 2002-12-04 | Voith Paper Patent GmbH | Verfahren zur Abscheidung von Anteilen aus einer Faserstoffsuspension |
DE102006030905B3 (de) * | 2006-07-04 | 2007-07-19 | Voith Patent Gmbh | Verfahren zur Abscheidung von Verunreinigungen aus einer Faserstoffsuspension |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
ATA755479A (de) | 1979-11-29 | 1981-08-15 | Stroemungsmasch Anst | Stoffauflauf fuer siebbandpressen |
US5779859A (en) * | 1996-12-13 | 1998-07-14 | J.M. Huber Corporation | Method of improving filler retention in papermaking |
DE19859770A1 (de) * | 1998-06-29 | 1999-12-30 | Voith Sulzer Papiertech Patent | Verfahren und Vorrichtung zum Mischen von Sroffsuspension |
DE10050109A1 (de) | 2000-10-09 | 2002-04-11 | Voith Paper Patent Gmbh | Verfahren und Mischvorrichtung zur Erzeugung einer fertigen Faserstoffsuspension |
DE10234559A1 (de) | 2002-07-30 | 2004-02-19 | Voith Paper Patent Gmbh | Blattbildungssystem |
DE102004049261A1 (de) | 2004-10-09 | 2006-04-13 | Voith Paper Patent Gmbh | Verfahren und Vorrichtung zur Regelung des Flächengewichtsquerprofils einer Faserstoffbahn |
US7381298B2 (en) * | 2004-12-30 | 2008-06-03 | Weyerhaeuser Company | Process for making a paperboard from a high consistency slurry containing high levels of crosslinked cellulosic fibers |
DE102005016192A1 (de) * | 2005-04-08 | 2006-10-12 | Voith Paper Patent Gmbh | Verfahren zum Auflösen und Reinigen von störstoffhaltigen Papierrohrstoffen |
DE102006036018B3 (de) * | 2006-08-02 | 2008-01-31 | Voith Patent Gmbh | Verfahren zur Zuführung einer Faserstoffsuspension zu einem Stoffauflauf einer Papiermaschine |
DE102008061970A1 (de) | 2008-12-12 | 2010-06-17 | Voith Patent Gmbh | Konstantteil-Sortierung |
-
2008
- 2008-12-12 DE DE102008061970A patent/DE102008061970A1/de not_active Withdrawn
-
2009
- 2009-11-03 WO PCT/EP2009/064526 patent/WO2010066514A2/de active Application Filing
- 2009-11-03 CN CN200980149825.7A patent/CN102282313B/zh not_active Expired - Fee Related
- 2009-11-03 BR BRPI0916105A patent/BRPI0916105A2/pt not_active IP Right Cessation
- 2009-11-03 EP EP09744690A patent/EP2379798A2/de not_active Withdrawn
-
2011
- 2011-06-10 US US13/157,904 patent/US8313618B2/en not_active Expired - Fee Related
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1983002293A1 (en) * | 1981-12-30 | 1983-07-07 | Nils Anders Lennart Wikdahl | Method and plant for deaerating fibre suspensions |
EP1262594A1 (de) * | 2001-05-29 | 2002-12-04 | Voith Paper Patent GmbH | Verfahren zur Abscheidung von Anteilen aus einer Faserstoffsuspension |
DE102006030905B3 (de) * | 2006-07-04 | 2007-07-19 | Voith Patent Gmbh | Verfahren zur Abscheidung von Verunreinigungen aus einer Faserstoffsuspension |
Also Published As
Publication number | Publication date |
---|---|
CN102282313A (zh) | 2011-12-14 |
US8313618B2 (en) | 2012-11-20 |
EP2379798A2 (de) | 2011-10-26 |
CN102282313B (zh) | 2014-09-17 |
BRPI0916105A2 (pt) | 2015-11-03 |
US20110290444A1 (en) | 2011-12-01 |
DE102008061970A1 (de) | 2010-06-17 |
WO2010066514A3 (de) | 2011-08-25 |
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