CN103154362A - Approach system of a machine for producing a fibrous web - Google Patents
Approach system of a machine for producing a fibrous web Download PDFInfo
- Publication number
- CN103154362A CN103154362A CN2011800374536A CN201180037453A CN103154362A CN 103154362 A CN103154362 A CN 103154362A CN 2011800374536 A CN2011800374536 A CN 2011800374536A CN 201180037453 A CN201180037453 A CN 201180037453A CN 103154362 A CN103154362 A CN 103154362A
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- CN
- China
- Prior art keywords
- stream
- consistency
- web
- low denseness
- afterwards
- 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.)
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-
- 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
-
- 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
- D21F1/08—Regulating consistency
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Abstract
The invention relates to a process and an arrangement for producing a fibrous suspension for producing a paper, board, tissue or another fibrous web by mixing at least one high-consistency stream (1) formed by treated fibrous material and filler with at least one low-consistency stream (2) preferably formed by fresh water, white water or the like in a machine for producing the fibrous web, wherein the high-consistency stream (1) is cleaned and, before and after this cleaning operation, is mixed with at least one part-stream of the low-consistency stream (2). In this case, the expenditure is to be reduced by degassing the high-consistency stream (1) for the first time after mixing with a part-stream of the low-consistency stream (2), which follows the cleaning operation.
Description
The present invention relates to a kind of method of making fibrous suspension, described fibrous suspension is for the preparation of paper web, board web, tissue web or other web of fibers, the method is mixed at least a high-consistency stream and at least a low denseness stream that is preferably formed by fresh water, plain boiled water (Siebwasser) etc. that is formed by treated fiber and filler in the machine of preparation web of fiber, wherein described high-consistency stream is purified, and described high-consistency stream mixes with at least one shunting (Teilstrom) of described low denseness stream before purifying and afterwards.
the invention still further relates to a kind of device that is specifically designed to the manufacturing fibrous suspension of implementing described method, described fibrous suspension is for the preparation of paper web, board web, tissue web or other web of fibers, wherein enter (the Konstantteil of system by the machine at the preparation web of fiber, approach system) at least a high-consistency that is formed by treated fiber and filler of middle mixing flows and is at least a preferably by fresh water, the low denseness stream that plain boiled water etc. form, wherein described high-consistency stream is guided through at least one cleaning equipment, and utilizing the shunting of low denseness stream to dilute in each mixing device at least before described cleaning equipment and afterwards.
Paper machine enter system, the plain boiled water that the import of paper machine (Stoffauflauf) receives in before with paper machine dilutes previous treated high-consistency accept (Gutstoff), purification and degassed being introduced into.
For example known by WO2004/072365, before mixing, all plain boiled water guiding are through degassing equipment.It is also known that, can reduce like this purification expense of accept, described accept is diluted in two steps, just realize purifying after dilution for the first time.In this way, thus make the amount of liquid that is guided through cleaning equipment minimize because denseness is higher.
If plain boiled water is not just degassed before mixing, so in the situation of two steps dilution, not only the stream of the high-consistency through purifying is carried out degassedly after dilution for the first time, and low denseness stream is carried out degassed for diluting for the second time.
The fresh water less and less that becomes mainly only is applied to the paper machine field now.
In two kinds of embodiments, degassed expense is especially high.
Therefore task of the present invention is in the situation that abundant exhaust (Entl ü ftung) reduces the expense of the system that enters.
The described task of following solution according to the present invention flows after the shunting of flowing with low denseness after purifying mixes at high-consistency, for the first time, carry out degassed to this high-consistency stream especially once.
In this way, do not carry out degassed to low denseness stream before mixing.The load of cleaning equipment and degassing equipment (Belastung) for the first time the dilution after because high slurry density keeps less.
With regard to device, be essentially, after the mixing device after cleaning equipment for the first time, especially once high-consistency stream is guided through degassing equipment.
To this, cleaning equipment can comprise a plurality of stages.Also possibly, before one or more mixing device are arranged on cleaning equipment (upstream) and/or (downstream) afterwards.
Abandon wittingly after high-consistency stream degassed and the shunting that the low denseness of introducing flows is carried out degassed at this.This is acceptable, because the Fluid Volume in overwhelming majority introducing import is by degassed.Even in the situation of the import that utilizes the dilution water of directly introducing, accounting for through degassed part total Fluid Volume of introducing in import is about 85 to 90%.Because the air content after high-consistency stream is degassed be generally less than 0.1% and the air content of plain boiled water be approximately 2%, usually can satisfy without any problems import desired less than 0.5% maximum air content.
Can omit thus second degassing equipment.Cleaning equipment such as cleaner or separator (Sortierer) are provided for the higher stream of denseness usually, wherein do not use its potential (Potential).Therefore the slurry density of high-consistency stream was 1.5 to 3.5% before being right after purification, was preferably greater than 2%.
About mixing device, in order fully to mix well, denseness stream is sprayed in low denseness stream fast, wherein the admission velocity of high-consistency stream is 3 to 15 times of the flowing velocity of low denseness stream.
Due to degassed and nonessential realization immediately after purifying, therefore carrying out degassed to the fibrous suspension of great share as far as possible is favourable in following situation: high-consistency flow mix with the shunting of low denseness stream is last after purifying after, carry out degassed to high-consistency stream.
This means for device, after the last mixing device in (downstream), high-consistency stream is guided through degassing equipment after being cleaning equipment.
In order to ensure degassed high efficiency, advantageously, the slurry density of high-consistency stream is 1 to 1.5% being right after before degassed.
In order to minimize degassed expense, low denseness stream is not carried out degassed or it is not guided through degassing equipment.
This also is applicable to the import in following situation, as putting down in writing in EP1645684, wherein mixes the stream of different denseness to regulate the weight per unit area cross section of web of fiber to be prepared.
At this, the shunting of low denseness not being flowed is not carried out degassed, but the preferred import that guides to machine through clean unit.
Due to the fluctuation of the fluid that imports and derive, go out to comprise overflow through degassed fibrous suspension from the degassing equipment Main Branches, it is advantageously just sneaked into after purifying high-consistency stream during high-consistency flows.This means with regard to device, the overflow of degassing equipment is guided to the mixing device after the cleaning equipment that is positioned at high-consistency stream.Alleviate extraly thus the burden of cleaning equipment.
For fear of the interference of import department and the interference of therefore avoiding preparing web of fiber, the high-consistency stream after last mixing device is preferred guides to import through clean unit.According to embodiment, this clean unit can play a part respectively degassed.
In order to utilize as much as possible fiber and filler, advantageously, at least one waste material (Reject) that and then is arranged on the high-consistency stream before import or hangs down the clean unit of denseness stream is directed to other clean unit, but its materials (Accept) are advantageously guided to degassing equipment.
Below will further the present invention will be described by embodiment.Accompanying drawing shows the schematic diagram of the system that enters of paper machine.
Paper machine enter system, the high-consistency stream 1 that in a known way fiber and filler is consisted of is corresponding to the parameter preset of paper machine, namely introduce together in mixing chamber and mix with the pre-mixing ratio of determining.
After this, high-consistency stream 1 slurry density and the air content scope with 3-4% is about 3%.
In entering system, high-consistency stream 1 is followed repeatedly, is utilized particularly the shunting of low denseness stream 2 to dilute in two mixing device 3,4 at this.The purification of high-consistency stream 1 and disposable degassedly realized before it arrives at the import 10 of paper machine in addition.
To introduce through one or more nozzles from import 10 for the finished fiber suspension of sheet forming (Blattbildung) on the forming screen (Formersiebe) of follow-up former (Former) or between.
Receive plain boiled water and it is entered system as what low denseness stream 2 was back to machine in the former of machine and follow-up unit, thereby lose as few as possible fiber and filler, and the less fresh water of needs.
In order to minimize expense, all do not carry out degassed to the whole plain boiled waters that are used for dilution in mixing device 3,4 and the plain boiled water that directly uses in import 10.
After the first mixing device 3 that is used for dilution high-consistency stream 1, the slurry density of this high-consistency stream 1 is less than 3.5%, and it makes in the cleaning equipment 5 that can be afterwards the whizzer form and purifies.Higher slurry density is owing to reducing the cost of investment of cleaning equipment 5 than low discharge, and is high to the efficient that has a strong impact on cleaning equipment 5 but slurry density also is unlikely to.
After purifying, then further dilute high-consistency stream 1 in follow-up mixing device 4, slurry density is decreased to 1 to 1.5%.
After this, high-consistency stream 1 is guided to degassing equipment 6, fluid reaches boiling point from low-pressure direct in degassing equipment 6, thereby degassed.
(Durchsatz) – fluctuates, and degassing equipment 6 comprises overfall, and its overflow is back to the preposition mixing device 4 that is right after with it and sneaks in high-consistency stream 1 for balanced flow.Thus, be different from prior art, this is at least part of need not guide through the cleaning equipment that it is degassed 4 again through degassed overflow.
After degassing equipment 6, for security reasons, high-consistency stream 1 is directed to import 10 through extra clean unit 7, and wherein said clean unit 7 is the have filter screen form of vertical separation device (Vertikalsichter) (Pressure separator (Drucksortierer)) of (Siebkorb).
If the shunting of plain boiled water is directly guided to import 10, as shown in the figure, so so it is through also being the clean unit 9 of vertical separation device (Pressure separator) form with filter screen.
Thus, can affect in known manner the weight per unit area cross section at import 10 places by plain boiled water.
Both waste materials of clean unit 7,9 before import 10 will be back to other clean unit 8, but materials are back to degassing equipment 6 to improve productive rate.
In order to realize required pressure, high-consistency stream 1 is guiding through product pump 11,12,13 respectively before cleaning equipment 5, before degassing equipment 6 and before last cleaning equipment 7.
Only use degassing equipment 6 that the quantity of required pump is reduced by at least one.
The amount of introducing the low denseness stream 2 (plain boiled waters) that the low denseness pump 14 of direct warp in imports 10 introduces through clean unit 9 generally includes 10 to 15% of total Fluid Volume of introducing import 10.
Because plain boiled water has approximately 2% air content usually, and the air content of 85 to 90% high-consistency stream 1 is less than 0.1%, even plain boiled water is not carried out the degassed air content that yet can guarantee without any problems import 10 places for less than 0.5% generally.
Realized in addition utilizing efficiently cleaning equipment 5, because cleaning equipment 5 has passed through higher content of material, and the overflow of degassing equipment 6 is just sneaked into after cleaning equipment 5 in high-consistency stream 1.
Claims (14)
1. method of making fibrous suspension, this fibrous suspension is for the preparation of paper web, board web, tissue web or other web of fibers, the method is mixed at least a high-consistency that is formed by treated fiber and filler and is flowed (1) and at least a preferably by fresh water in the machine of preparation web of fiber, the low denseness stream (2) that plain boiled water etc. form, wherein described high-consistency stream (1) is purified, and described high-consistency stream (1) mixes with at least one shunting of described low denseness stream (2) before purifying and afterwards, it is characterized in that, high-consistency stream (1) after purifying with low denseness stream (2) shunt mixing after, carry out degassed for the first time to high-consistency stream (1).
2. according to claim 1 method, is characterized in that, after the mixing of last and described low denseness stream (2) shunting, described high-consistency flowed (1) at high-consistency stream (1) after purifying and carry out degassed.
3. according to claim 1 and 2 method, is characterized in that, do not carry out degassed to described low denseness stream (2).
4. according to the method for any one in the claims, it is characterized in that, the shunting of described low denseness stream (2) is guided to the import (10) of described machine.
5. according to the method for any one in the claims, it is characterized in that, the overflow that produces when degassed is just sneaked in this high-consistency stream (1) afterwards at purification high-consistency stream (1).
6. according to the method for any one in the claims, it is characterized in that, the slurry density of described high-consistency stream (1) was between 1.5 to 3.5% before being right after described purification, is preferably greater than 2%.
7. according to the method for the claims any one, it is characterized in that, the slurry density of described high-consistency stream (1) is between 1 to 1.5% being right after described before degassed.
8. one kind is specifically designed to the device of implementing according to the manufacturing fibrous suspension of the described method of any one in aforementioned claim, this fibrous suspension is for the preparation of paper web, board web, tissue web or other web of fibers, wherein by the machine of preparation web of fiber enter system in mix at least a high-consistency that is formed by treated fiber and filler and flow (1) and at least a preferably by fresh water, the low denseness stream (2) that plain boiled water etc. form, wherein described high-consistency stream (1) is guided through at least one cleaning equipment (5) and at described cleaning equipment (5) before and afterwards at each mixing device (3 at least, 4) utilize the shunting of low denseness stream (2) to dilute in, it is characterized in that, mixing device (4) after cleaning equipment (5) afterwards, described high-consistency stream (1) is guided through degassing equipment (6) for the first time.
9. according to claim 8 device, is characterized in that, the last mixing device (4) after cleaning equipment (5) is guided through degassing equipment (6) with described high-consistency stream (1) afterwards.
10. according to claim 8 or 9 device, is characterized in that, described low denseness stream (2) is not guided through degassing equipment.
11. the device of any one of according to claim 8 to 10 is characterized in that, the import (10) that clean unit (9) guides to described machine is preferably passed through in the shunting of described low denseness stream (2).
12. the device of any one of according to claim 8 to 11 is characterized in that, the overflow of described degassing equipment (6) guides to cleaning equipment (5) mixing device (4) afterwards that is positioned at described high-consistency stream (1).
13. the device of any one of according to claim 8 to 12 is characterized in that, described high-consistency stream (1) preferably passes through afterwards clean unit (7) at described last mixing device (4) and guides to import (10).
14. the device of any one according to claim 11 to 13 is characterized in that, the waste material of clean unit (7,9) guides to other clean unit (8) at least, but its materials preferably guide to described degassing equipment (6).
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201010038694 DE102010038694A1 (en) | 2010-07-30 | 2010-07-30 | constant part |
| DE102010038694.4 | 2010-07-30 | ||
| PCT/EP2011/059668 WO2012013407A1 (en) | 2010-07-30 | 2011-06-10 | Approach system of a machine for producing a fibrous web |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103154362A true CN103154362A (en) | 2013-06-12 |
| CN103154362B CN103154362B (en) | 2015-10-21 |
Family
ID=44263123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201180037453.6A Expired - Fee Related CN103154362B (en) | 2010-07-30 | 2011-06-10 | For the preparation of web of fiber machine enter system |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2598690B1 (en) |
| CN (1) | CN103154362B (en) |
| DE (1) | DE102010038694A1 (en) |
| WO (1) | WO2012013407A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107447567A (en) * | 2017-09-30 | 2017-12-08 | 枣庄市恒宇纸业有限公司 | A kind of processing unit of papermaking equipment slurry |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013206638A1 (en) * | 2013-04-15 | 2014-10-30 | Voith Patent Gmbh | Pressure sorter reject treatment |
| DE102013209998A1 (en) * | 2013-05-29 | 2014-05-22 | Voith Patent Gmbh | Constant part mixer |
| DE102013210004A1 (en) * | 2013-05-29 | 2014-05-15 | Voith Patent Gmbh | constant part |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5308384A (en) * | 1991-10-16 | 1994-05-03 | A. Ahlstrom Corporation | Deaeration vessel |
| WO2001021885A1 (en) * | 1999-09-21 | 2001-03-29 | Metso Paper, Inc. | Regulation system for the short circulation and headbox of a paper machine or equivalent |
| CN1305549A (en) * | 1998-06-10 | 2001-07-25 | 韦尔梅特公司 | Process arrangement for short circulation in paper or board machine |
| WO2002057542A1 (en) * | 2000-12-29 | 2002-07-25 | Metso Paper, Inc. | Apparatus for passing stock into a headbox of a paper machine or equivalent |
| WO2002072948A1 (en) * | 2001-02-23 | 2002-09-19 | Metso Paper Automation Oy | Method and arrangement for controlling short circulation in a paper machine or the like |
| WO2002086233A1 (en) * | 2001-04-23 | 2002-10-31 | Metso Paper, Inc. | Method and process arrangement in the short circulation of a paper machine |
| WO2003023135A1 (en) * | 2001-09-07 | 2003-03-20 | Metso Paper, Inc. | Deaeration arrangement in connection with a paper machine or equivalent |
| WO2004072365A1 (en) * | 2003-02-11 | 2004-08-26 | Metso Paper, Inc. | Apparatus and method in the treatment of the stock passed to a headbox of a paper machine or equivalent |
| WO2005088007A1 (en) * | 2004-03-15 | 2005-09-22 | Metso Paper, Inc. | Method for monitoring and controlling a papermaking process |
| EP1645684A1 (en) * | 2004-10-09 | 2006-04-12 | Voith Paper Patent GmbH | Method and device for regulating the transverse grammage profile of a fibrous web |
| WO2009021804A1 (en) * | 2007-08-11 | 2009-02-19 | Voith Patent Gmbh | Constant part for a paper machine |
| CN101778974A (en) * | 2007-08-11 | 2010-07-14 | 沃依特专利有限责任公司 | Constant part for a paper machine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008061970A1 (en) * | 2008-12-12 | 2010-06-17 | Voith Patent Gmbh | Approach flow sorting |
-
2010
- 2010-07-30 DE DE201010038694 patent/DE102010038694A1/en not_active Withdrawn
-
2011
- 2011-06-10 CN CN201180037453.6A patent/CN103154362B/en not_active Expired - Fee Related
- 2011-06-10 WO PCT/EP2011/059668 patent/WO2012013407A1/en active Application Filing
- 2011-06-10 EP EP11724243.8A patent/EP2598690B1/en not_active Not-in-force
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5308384A (en) * | 1991-10-16 | 1994-05-03 | A. Ahlstrom Corporation | Deaeration vessel |
| CN1305549A (en) * | 1998-06-10 | 2001-07-25 | 韦尔梅特公司 | Process arrangement for short circulation in paper or board machine |
| WO2001021885A1 (en) * | 1999-09-21 | 2001-03-29 | Metso Paper, Inc. | Regulation system for the short circulation and headbox of a paper machine or equivalent |
| WO2002057542A1 (en) * | 2000-12-29 | 2002-07-25 | Metso Paper, Inc. | Apparatus for passing stock into a headbox of a paper machine or equivalent |
| WO2002072948A1 (en) * | 2001-02-23 | 2002-09-19 | Metso Paper Automation Oy | Method and arrangement for controlling short circulation in a paper machine or the like |
| WO2002086233A1 (en) * | 2001-04-23 | 2002-10-31 | Metso Paper, Inc. | Method and process arrangement in the short circulation of a paper machine |
| WO2003023135A1 (en) * | 2001-09-07 | 2003-03-20 | Metso Paper, Inc. | Deaeration arrangement in connection with a paper machine or equivalent |
| WO2004072365A1 (en) * | 2003-02-11 | 2004-08-26 | Metso Paper, Inc. | Apparatus and method in the treatment of the stock passed to a headbox of a paper machine or equivalent |
| WO2005088007A1 (en) * | 2004-03-15 | 2005-09-22 | Metso Paper, Inc. | Method for monitoring and controlling a papermaking process |
| EP1645684A1 (en) * | 2004-10-09 | 2006-04-12 | Voith Paper Patent GmbH | Method and device for regulating the transverse grammage profile of a fibrous web |
| WO2009021804A1 (en) * | 2007-08-11 | 2009-02-19 | Voith Patent Gmbh | Constant part for a paper machine |
| CN101778974A (en) * | 2007-08-11 | 2010-07-14 | 沃依特专利有限责任公司 | Constant part for a paper machine |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107447567A (en) * | 2017-09-30 | 2017-12-08 | 枣庄市恒宇纸业有限公司 | A kind of processing unit of papermaking equipment slurry |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102010038694A1 (en) | 2012-02-02 |
| EP2598690B1 (en) | 2014-04-23 |
| EP2598690A1 (en) | 2013-06-05 |
| WO2012013407A1 (en) | 2012-02-02 |
| CN103154362B (en) | 2015-10-21 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151021 Termination date: 20190610 |