CN108468244A - A kind of purification system and its purification method of raising face layer paper pulp cleanliness factor - Google Patents
A kind of purification system and its purification method of raising face layer paper pulp cleanliness factor Download PDFInfo
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- CN108468244A CN108468244A CN201810593026.XA CN201810593026A CN108468244A CN 108468244 A CN108468244 A CN 108468244A CN 201810593026 A CN201810593026 A CN 201810593026A CN 108468244 A CN108468244 A CN 108468244A
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- Prior art keywords
- classifying screen
- screen
- purification system
- desander
- stuff
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- 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
- D21D5/005—Forming fibrous aggregates
Abstract
The present invention relates to the purification systems and its purification method of a kind of raising face layer paper pulp cleanliness factor, the purification system includes the first classifying screen and the second classifying screen, first classifying screen is linked in sequence with the second classifying screen, first classifying screen is for detaching long stuff, second classifying screen is for detaching short stock and middle fibre stuff, by changing the sequence of the screening slurry of classifying screen, to improve the cleanliness factor of the paper pulp for making face layer.The purification system of layer paper pulp cleanliness factor in raising face provided by the invention, on the one hand, the cleanliness factor of face layer paper pulp can be effectively improved, and then reduce the dust point or impure point of paper face layer；On the other hand, also with simple, the cost-effective advantage of scrap build.
Description
Technical field
The present invention relates to the purification systems of pulp technology for making paper more particularly to a kind of raising face layer paper pulp cleanliness factor and its net
Change method.
Background technology
With the development of industry manufacture and e-commerce, the demand of product packaging paper is continuously increased.Currently, secondary stock is given birth to
The wrapping paper of production has become the leading of wrapping paper.The pulping and paper-making production system of the secondary stocks such as waste and old boxboard, which exists, to be slurried
Cleanliness factor is poor, the problem more than the paper face of production layer dust point and impure point, cause quality of paper products cannot meet client with
The market demand, how to improve the cleanliness factor of secondary stock becomes a technical problem to be solved urgently.
At present in pulping and papermaking process, good slurry that classifying screen first time classifying screen is selected is short stock, and tail slurry is into one
Step carries out classifying screen classification, and it is middle fibre stuff to sift out good slurry, and tail slurry is long stuff.Wherein, the middle fiber pulp filtered out
Material is for manufacturing paper pulp face layer.In existing paper pulp papermaking technique, classifying screen first time sizing screening and second of sizing screening make
The screen slot spacing of classifying screen is identical, and the middle fibre stuff quality filtered out cannot be met the requirements, and dust impure point is more.
Invention content
In order to solve the above technical problems, the present invention provides a kind of purification system of raising face layer paper pulp cleanliness factor, take
Technical solution is as follows：
A kind of purification system of raising face layer paper pulp cleanliness factor, the purification system include the first classifying screen and the second classification
Sieve, first classifying screen is linked in sequence with the second classifying screen, and first classifying screen is used to detach long stuff, and described the
The tail slurry of one classifying screen inputs second classifying screen, and second classifying screen is for detaching short stock and middle fiber pulp
Material, the short stock input paper machine side layer, and the long stuff and middle fibre stuff input paper machine bottom；
Further, the screen cylinder of first classifying screen and the second classifying screen is slotted screen, the sieve of first classifying screen
Stitch the screen slot spacing that spacing is more than second classifying screen；
Further, the screen slot spacing range of first classifying screen is 0.05-0.5mm, preferably 0.15mm；
Further, the screen slot spacing range of second classifying screen is 0.05-0.3mm, preferably 0.1mm；
Further, the purification system further includes desander, and the desander is arranged after classifying screen, for dividing
Treated that slurry carries out removal of impurities processing for grade sieve；
Further, the cyclone diameter of the desander is less than 80mm；
Further, the cyclone diameter of the desander is 50-60mm；
Further, desander includes long fibre desander, staple fiber desander and middle fiber desander, the long fibre
Desander stock inlet is connect with the first classifying screen long fibre grout outlet, the stock inlet of the staple fiber desander with described second point
The staple fiber grout outlet connection of grade sieve, the stock inlet of the middle fiber desander and the middle fiber grout outlet of second classifying screen
Connection.
Further, the long fibre desander is made of four concatenated desanders, and the middle fiber desander is by four
A concatenated desander composition, the staple fiber coarse sand device are made of two concatenated desanders.
In addition, the present invention also provides a kind of purification method of above-mentioned purification system, the purification method is as follows：Paper pulp into
Enter the first classifying screen, isolated long stuff；Tail slurry enters the second classifying screen, isolated middle fibre stuff and staple fiber
Slurry；Long stuff cleans into four sections of desanders, subsequently into paper machine bottom；Middle fibre stuff enters four sections of desanding
Device cleans, subsequently into paper machine bottom；Short stock cleans into two sections of desanders, subsequently into paper machine side
Layer.
Due to the implementation of above technical scheme, the present invention has the following advantages that compared with prior art：
The purification system of raising face provided by the invention layer paper pulp cleanliness factor, the purification system include the first classifying screen and
Second classifying screen, first classifying screen are linked in sequence with the second classifying screen, and first classifying screen is for detaching long fiber pulp
Material, the tail slurry of first classifying screen input second classifying screen, second classifying screen for detach short stock and
Middle fibre stuff, the sequence of the screening slurry by changing classifying screen, to improve the cleanliness factor of the paper pulp for making face layer.
The purification system of layer paper pulp cleanliness factor in raising face provided by the invention, on the one hand, the cleanliness factor that face layer paper pulp can be effectively improved, into
And reduce the dust point or impure point of paper face layer；On the other hand, also with simple, the cost-effective advantage of scrap build.
Description of the drawings
Fig. 1 is the schematic diagram for the purification system that face layer paper pulp cleanliness factor is improved in embodiment 1；
Fig. 2 is the schematic diagram for the purification system that face layer paper pulp cleanliness factor is improved in embodiment 2
Specific implementation mode
In order that those skilled in the art will better understand the technical solution of the present invention, implement below in conjunction with the present invention
Attached drawing in example, technical scheme in the embodiment of the invention is clearly and completely described.Obviously, described embodiment
Only a part of the embodiments of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
The every other embodiment that technical staff is obtained without making creative work, should all belong to protection of the present invention
Range.
Embodiment
First classifying screen：Producer, KBC international bodies (China) Co., Ltd；Model UV500；
Second classifying screen：Producer, KBC international bodies (China) Co., Ltd；Model UV500；
Desander：Producer, KBC international bodies (China) Co., Ltd；Model C T30.
Embodiment 1
The present embodiment provides a kind of purification system of raising face layer paper pulp cleanliness factor, the purification system includes the first classification
Sieve and the second classifying screen, first classifying screen are linked in sequence with the second classifying screen, and first classifying screen is for detaching long fibre
Slurry is tieed up, the tail slurry of first classifying screen inputs second classifying screen, and second classifying screen is for detaching short fibered pulp
Material and middle fibre stuff, the short stock are used to prepare the face layer of boxboard, the long stuff and middle fibre stuff
It is used to prepare the sandwich layer of boxboard.
The screen slot of first classifying screen is set as 0.15mm, and the screen slot spacing of the second classifying screen is set as 0.1mm
As shown in Figure 1, paper pulp, after scalping is handled, into the first classifying screen, scalping isolates long stuff
It goes, remaining slurry enters the second classifying screen, and secondary grading separates short stock and middle fibre stuff.It is wherein long fine
Slurry and middle fibre stuff are tieed up after the processing of subsequent processing process, into paper machine bottom, the sandwich layer for manufacturing boxboard；It is short
Fibre stuff is after the processing of subsequent processing process, into paper machine side layer, the face layer for manufacturing boxboard.
By changing traditional classifying screen clastotype, i.e.,：Scalping sifts out short stock, secondary grading separation length
Fiber and middle fibre stuff；Short stock to preparing face layer paper pulp carries out secondary grading, improves the cleanliness factor of face layer paper pulp,
And then the face layer dust of paper surface and the quantity of impure point are reduced, improve the quality of face layer paper.
Embodiment 2
To further increase paper pulp cleanliness factor, purification system provided by the invention further includes desander, and the desander is set
It sets after classifying screen, for classifying screen, treated that slurry cleans.Desander includes long fibre desander, staple fiber
Desander and middle fiber desander, the long fibre desander stock inlet is connect with the first classifying screen long fibre grout outlet, described
The stock inlet of staple fiber desander is connect with the staple fiber grout outlet of second classifying screen, the middle fiber desander into slurry
Mouth is connect with the middle fiber grout outlet of second classifying screen,
To reduce fiber loss rate, long stuff and middle fibre stuff pass through 4 sections of removal of impurities and handle, i.e.,：It is described long fine
Dimension desander is made of four concatenated desanders (calling 4 sections of desanders in the following text), and the middle fiber desander concatenated is removed by four
Sand device (calling 4 sections of desanders in the following text) forms,
To improve the cleanliness factor of short stock, short stock is arranged to 2 sections of removal of impurities processing, the staple fiber desander
It is made of the desander of two series connection (calling 2 sections of desanders in the following text).
The cyclone diameter of desander is set as 55mm.
As shown in Fig. 2, paper pulp, after scalping is handled, into the first classifying screen, scalping isolates long stuff
It goes, remaining slurry enters the second classifying screen, and secondary grading separates short stock and middle fibre stuff；Short fibered pulp
Material enters 2 sections of desanders, and 2 sections of desanders treated short stock is after the processing of subsequent processing process, into paper machine side layer；
Middle fibre stuff enters 4 sections of desanders, 4 sections of desanders during treated fibre stuff enter after the processing of subsequent processing process
Paper machine bottom；Long stuff enters 4 sections of desanders, 4 sections of desanders treated long stuff through subsequent processing process at
After reason, into paper machine bottom.
Following table is the purification system that is provided through the invention treated paper prepared by face layer paper pulp and traditional face layer
The contrast effect of paper prepared by pulp processing technique.Paper quality evaluation index uses unit area (1 square metre) interior dust
Point number.
Above example is described in detail the present invention, and its object is to allow the personage for being familiar with this field technology can
Understand present disclosure and be implemented, it is not intended to limit the scope of the present invention, all spirit according to the present invention
Equivalent change or modification made by essence should all cover within the scope of the present invention.
Claims (10)
1. a kind of purification system of raising face layer paper pulp cleanliness factor, which is characterized in that the purification system includes the first classifying screen
With the second classifying screen, first classifying screen is linked in sequence with the second classifying screen, and first classifying screen is for detaching long fibre
The tail slurry of slurry, first classifying screen inputs second classifying screen, and second classifying screen is for detaching short stock
With middle fibre stuff, the short stock inputs paper machine side layer, the long stuff and middle fibre stuff input paper machine bottom
Layer.
2. purification system as described in claim 1, which is characterized in that the screen cylinder of first classifying screen and the second classifying screen is equal
For slotted screen, the screen slot spacing of first classifying screen is more than the screen slot spacing of second classifying screen.
3. purification system as claimed in claim 2, which is characterized in that the screen slot spacing range of first classifying screen is
0.05-0.5mm, preferably 0.15mm.
4. purification system as claimed in claim 2, which is characterized in that the screen slot spacing range of second classifying screen is
0.05-0.3mm, preferably 0.1mm.
5. purification system as claimed in claim 4, which is characterized in that the purification system further includes desander, the desanding
Device is arranged after classifying screen, for classifying screen, treated that slurry carries out removal of impurities processing.
6. purification system as claimed in claim 5, which is characterized in that the cyclone diameter of the desander is less than 80mm, excellent
It is selected as 50-60mm.
7. purification system as claimed in claim 6, which is characterized in that desander includes long fibre desander, staple fiber desanding
Device and middle fiber desander, the long fibre desander stock inlet are connect with the first classifying screen long fibre grout outlet, the short fibre
Dimension desander stock inlet connect with the staple fiber grout outlet of second classifying screen, the stock inlet of the middle fiber desander and
The middle fiber grout outlet of second classifying screen connects.
8. purification system as claimed in claim 7, which is characterized in that the long fibre desander is by four concatenated desanders
Composition, the middle fiber desander are made of four concatenated desanders, and the staple fiber coarse sand device is by two concatenated desanding
Device forms.
9. a kind of purification method of purification system as described in claim 1-8 is any, which is characterized in that the purification method is such as
Under：Paper pulp enters the first classifying screen, isolated long stuff；Tail slurry enters the two or two classifying screen, isolated middle fiber
Slurry and short stock；The long stuff and the middle fibre stuff input paper machine bottom；The short stock is defeated
Enter paper machine side layer.
10. the purification method stated such as claim 9 office, which is characterized in that be based on purification system according to any one of claims 8, institute
It is as follows to state working method：Paper pulp enters the first classifying screen, isolated long stuff；Tail slurry enters the second classifying screen, separation
Obtain middle fibre stuff and short stock；Long stuff cleans into four sections of desanders, subsequently into paper machine bottom；
Middle fibre stuff cleans into four sections of desanders, subsequently into paper machine bottom；Short stock enter two sections of desanders into
Row removal of impurities, subsequently into paper machine side layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810593026.XA CN108468244A (en) | 2018-06-11 | 2018-06-11 | A kind of purification system and its purification method of raising face layer paper pulp cleanliness factor |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810593026.XA CN108468244A (en) | 2018-06-11 | 2018-06-11 | A kind of purification system and its purification method of raising face layer paper pulp cleanliness factor |
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| Publication Number | Publication Date |
|---|---|
| CN108468244A true CN108468244A (en) | 2018-08-31 |
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| CN201810593026.XA Pending CN108468244A (en) | 2018-06-11 | 2018-06-11 | A kind of purification system and its purification method of raising face layer paper pulp cleanliness factor |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3781150A (en) * | 1971-12-29 | 1973-12-25 | Honshu Paper Co Ltd | Apparatus for producing multilayer fibrous structures |
| US4781793A (en) * | 1986-07-04 | 1988-11-01 | Valmet Oy | Method for improving paper properties in multiply paper using long and short fiber layers |
| CN203411860U (en) * | 2013-05-14 | 2014-01-29 | 广东理文造纸有限公司 | Paper with paper face with high cleanliness |
| CN203668752U (en) * | 2014-03-14 | 2014-06-25 | 河北昌泰纸业有限公司 | Classifying pulping and papermaking production system |
| CN105780570A (en) * | 2014-12-15 | 2016-07-20 | 福建利树集团有限公司 | Wastepaper pulping and papermaking method |
| CN106930139A (en) * | 2017-01-05 | 2017-07-07 | 东莞建晖纸业有限公司 | The preparation technology of environmentally friendly liner board |
| CN207079419U (en) * | 2017-06-20 | 2018-03-09 | 台州森林造纸有限公司 | A kind of paper grade (stock) pulping system |
| CN208803298U (en) * | 2018-06-11 | 2019-04-30 | 玖龙纸业（太仓）有限公司 | A kind of purification system improving surface layer paper pulp cleanliness |
-
2018
- 2018-06-11 CN CN201810593026.XA patent/CN108468244A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3781150A (en) * | 1971-12-29 | 1973-12-25 | Honshu Paper Co Ltd | Apparatus for producing multilayer fibrous structures |
| US4781793A (en) * | 1986-07-04 | 1988-11-01 | Valmet Oy | Method for improving paper properties in multiply paper using long and short fiber layers |
| CN203411860U (en) * | 2013-05-14 | 2014-01-29 | 广东理文造纸有限公司 | Paper with paper face with high cleanliness |
| CN203668752U (en) * | 2014-03-14 | 2014-06-25 | 河北昌泰纸业有限公司 | Classifying pulping and papermaking production system |
| CN105780570A (en) * | 2014-12-15 | 2016-07-20 | 福建利树集团有限公司 | Wastepaper pulping and papermaking method |
| CN106930139A (en) * | 2017-01-05 | 2017-07-07 | 东莞建晖纸业有限公司 | The preparation technology of environmentally friendly liner board |
| CN207079419U (en) * | 2017-06-20 | 2018-03-09 | 台州森林造纸有限公司 | A kind of paper grade (stock) pulping system |
| CN208803298U (en) * | 2018-06-11 | 2019-04-30 | 玖龙纸业（太仓）有限公司 | A kind of purification system improving surface layer paper pulp cleanliness |
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