WO2009021805A1 - Konstantteil für eine papiermaschine - Google Patents
Konstantteil für eine papiermaschine Download PDFInfo
- Publication number
- WO2009021805A1 WO2009021805A1 PCT/EP2008/059369 EP2008059369W WO2009021805A1 WO 2009021805 A1 WO2009021805 A1 WO 2009021805A1 EP 2008059369 W EP2008059369 W EP 2008059369W WO 2009021805 A1 WO2009021805 A1 WO 2009021805A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- consistency
- stream
- low
- consistency stream
- producing
- Prior art date
Links
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
- 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
- D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
Definitions
- the invention relates to a method for producing a finished pulp suspension for producing a paper, board, tissue or other fibrous web by mixing at least one high consistency flow formed by newly processed fiber and filler with at least one low consistency flow in the constant part formed by white water a machine for producing the fibrous web.
- the invention also relates to an arrangement for producing a finished pulp suspension for producing a paper, board, tissue or another fibrous web with a mixing device for mixing at least one, made of recycled fiber and filler high consistency flow with at least one of white water formed low-consistency stream in the constant part of a machine for producing the fibrous web.
- the high-consistency accept is diluted with the collected in the paper machine white water to a consistency between 0.5 and 2% and then fed to the headbox. Before the headbox, however, the pulp suspension must still be degassed and cleaned.
- the object of the invention is therefore to reduce the effort and the space required for the constant part.
- this object is achieved in that only the low-consistency stream is degassed before mixing, part of the degassed low-consistency stream is mixed with the high-consistency stream such that a consistency of between 2.1 and 2.5% results in the high-consistency stream, the mixed high-consistency stream is then cleaned and the purified High consistency and the remaining low-consistency stream before and / or be mixed in a headbox of the machine.
- the dilution of the high consistency stream to the required at the headbox 0.5 to 2% consistency can then take place shortly before and / or only in the headbox.
- the degasser should reduce the air content in the low consistency stream to less than 0.6% by volume.
- the remaining low consistency stream not mixed with the high consistency stream should be passed through a cleaning device prior to mixing with the purified high consistency stream and thereby cleaned.
- the mixture of the purified high-consistency stream should be carried out with the remaining low-consistency stream in the headbox.
- headboxes are suitable in which streams of different consistency are mixed to regulate the basis weight cross profile, as described for example in EP 1 645 684.
- the feeding of at least one stream, preferably the high-consistency stream, should be regulated for the basis weight cross-profiling of the fibrous web.
- the feeding of at least one stream, preferably of the high-consistency stream to the basis weight cross-profiling of the fibrous web should take place via a controlled pump.
- the invention leads to an improvement in the process stability and the running behavior of the paper machine (shorter dead time) and thus to a higher production yield.
- Figure 1 a schematic representation of the constant part of a paper machine
- Figure 2 another embodiment.
- the high-consistency stream 1 in both cases is prepared in a manner known per se from fibers and fillers in accordance with the specifications of the papermaker, i. in predetermined mixing ratios in a mixing chest 6 merged and mixed.
- the paper machine begins with the headbox 3 and the adjoining former 11 to form the fibrous web 9.
- the finished pulp suspension is applied via one or more nozzles of the headbox 3 on the Formersieb 10.
- the white water is collected and returned to the constant part.
- the use of white water to form the low-consistency stream 2 is not only associated with savings compared to the use of fresh water, but it can also be reused in the white water contained fiber and fillers.
- the white water i. the low-consistency stream 2 is first degassed in a degassing device 4.
- the white water is brought to boiling under reduced pressure. In this case, even slight impurities can be eliminated. Described is such a degassing device 4 in EP 1 143 066.
- Part of the degassed low-consistency stream 2 is fed with the high-consistency stream 1 from the mixing chest 6 to a mixing device 5.
- This mixing device 5 may be designed, for example, similar to the arrangement described in DE 100 50 109.
- the proportion of the supplied low-consistency stream is chosen so large that the high-consistency stream 1 when leaving the mixing device 5 has a consistency between 2.1 and 2.5%.
- the high-consistency stream 1 is passed through a plurality of cleaning devices 8.
- the relatively high consistency significantly reduces the effort for cleaning due to the lower throughput.
- the non-guided in the mixing device 5 part of the low-consistency stream 2 is passed through a cleaning device 7.
- the cleaning devices 7, 8 can be formed in accordance with the requirements of, for example, cleaners, perforators or slot sorters.
- both streams 1, 2 are mixed so that a consistency of between 0.5 and 2% results.
- the high-consistency stream 1 after the cleaning device 8 is diluted with part of the degassed low-consistency stream 2 in a mixing device 12.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08786208A EP2188442A1 (de) | 2007-08-11 | 2008-07-17 | Konstantteil für eine papiermaschine |
CN200880103179A CN101778974A (zh) | 2007-08-11 | 2008-07-17 | 用于造纸机的上浆*** |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007038089.7 | 2007-08-11 | ||
DE200710038089 DE102007038089A1 (de) | 2007-08-11 | 2007-08-11 | Konstantteil |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009021805A1 true WO2009021805A1 (de) | 2009-02-19 |
Family
ID=39770785
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2008/059369 WO2009021805A1 (de) | 2007-08-11 | 2008-07-17 | Konstantteil für eine papiermaschine |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP2188442A1 (de) |
CN (1) | CN101778974A (de) |
DE (1) | DE102007038089A1 (de) |
WO (1) | WO2009021805A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101871370A (zh) * | 2010-06-18 | 2010-10-27 | 赵仁平 | 自备发电厂乏汽热焓综合利用***及在造纸业的应用 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102008058414A1 (de) * | 2008-11-21 | 2010-05-27 | Voith Patent Gmbh | Konstantteil mit Entkopplung |
DE102009020949A1 (de) * | 2009-05-12 | 2010-11-18 | Voith Patent Gmbh | Konstantteil |
CN102191711A (zh) * | 2010-03-17 | 2011-09-21 | 中国制浆造纸研究院 | 一种提高造纸法纤维复合材料浆料滤水速度的配料方法 |
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***及上网浆料净化方法 |
CN104611980A (zh) * | 2015-01-28 | 2015-05-13 | 联盛纸业(龙海)有限公司 | 一种高强内结合力箱板纸生产方法 |
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*** |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29909960U1 (de) * | 1998-06-10 | 1999-09-09 | Valmet Corp., Helsinki | Prozeßanordnung des primären Kreislaufs einer Papier- oder Kartonmaschine |
DE102004051327A1 (de) * | 2004-10-21 | 2006-05-04 | Voith Paper Patent Gmbh | Verfahren zur Entgasung und Zuführung einer Faserstoffsuspension zu einem Stoffauflauf sowie Entgasungsvorrichtung |
EP1884592A1 (de) * | 2006-08-02 | 2008-02-06 | Voith Patent GmbH | Verfahren zur Zuführung einer Faserstoffsuspension zu einem Stoffauflauf einer Papiermaschine |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10017037A1 (de) | 2000-04-05 | 2001-10-11 | Voith Paper Patent Gmbh | Vorrichtung zum Entgasen von Faserstoffsuspension |
DE10050109A1 (de) | 2000-10-09 | 2002-04-11 | Voith Paper Patent Gmbh | Verfahren und Mischvorrichtung zur Erzeugung einer fertigen Faserstoffsuspension |
DE102004049261A1 (de) | 2004-10-09 | 2006-04-13 | Voith Paper Patent Gmbh | Verfahren und Vorrichtung zur Regelung des Flächengewichtsquerprofils einer Faserstoffbahn |
-
2007
- 2007-08-11 DE DE200710038089 patent/DE102007038089A1/de not_active Withdrawn
-
2008
- 2008-07-17 EP EP08786208A patent/EP2188442A1/de not_active Withdrawn
- 2008-07-17 WO PCT/EP2008/059369 patent/WO2009021805A1/de active Application Filing
- 2008-07-17 CN CN200880103179A patent/CN101778974A/zh active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE29909960U1 (de) * | 1998-06-10 | 1999-09-09 | Valmet Corp., Helsinki | Prozeßanordnung des primären Kreislaufs einer Papier- oder Kartonmaschine |
DE102004051327A1 (de) * | 2004-10-21 | 2006-05-04 | Voith Paper Patent Gmbh | Verfahren zur Entgasung und Zuführung einer Faserstoffsuspension zu einem Stoffauflauf sowie Entgasungsvorrichtung |
EP1884592A1 (de) * | 2006-08-02 | 2008-02-06 | Voith Patent GmbH | Verfahren zur Zuführung einer Faserstoffsuspension zu einem Stoffauflauf einer Papiermaschine |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101871370A (zh) * | 2010-06-18 | 2010-10-27 | 赵仁平 | 自备发电厂乏汽热焓综合利用***及在造纸业的应用 |
Also Published As
Publication number | Publication date |
---|---|
DE102007038089A1 (de) | 2009-02-12 |
CN101778974A (zh) | 2010-07-14 |
EP2188442A1 (de) | 2010-05-26 |
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