CN1997794B - A method and an arrangement at a paper machine - Google Patents
A method and an arrangement at a paper machine Download PDFInfo
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- CN1997794B CN1997794B CN2005800216541A CN200580021654A CN1997794B CN 1997794 B CN1997794 B CN 1997794B CN 2005800216541 A CN2005800216541 A CN 2005800216541A CN 200580021654 A CN200580021654 A CN 200580021654A CN 1997794 B CN1997794 B CN 1997794B
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- denseness
- process liquids
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- 238000000034 method Methods 0.000 title claims abstract description 127
- 229920001131 Pulp (paper) Polymers 0.000 claims abstract description 62
- 239000007788 liquid Substances 0.000 claims abstract description 58
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 10
- 230000009969 flowable effect Effects 0.000 claims abstract description 4
- 239000000654 additive Substances 0.000 claims description 37
- 230000000996 additive effect Effects 0.000 claims description 35
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 239000000835 fiber Substances 0.000 claims description 16
- 239000000049 pigment Substances 0.000 claims description 11
- 238000002360 preparation method Methods 0.000 claims description 8
- 239000002657 fibrous material Substances 0.000 claims description 7
- 238000000926 separation method Methods 0.000 claims description 5
- 239000006185 dispersion Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 3
- 238000004040 coloring Methods 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 238000010924 continuous production Methods 0.000 claims description 2
- 238000001914 filtration Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims 2
- 230000001502 supplementing effect Effects 0.000 claims 1
- 239000000463 material Substances 0.000 description 15
- 238000004140 cleaning Methods 0.000 description 12
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 11
- 239000000047 product Substances 0.000 description 10
- 239000000126 substance Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 239000004408 titanium dioxide Substances 0.000 description 5
- 238000002156 mixing Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 238000005034 decoration Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229920002678 cellulose Polymers 0.000 description 2
- 239000001913 cellulose Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000007667 floating Methods 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 239000007844 bleaching agent Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007865 diluting Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000012065 filter cake Substances 0.000 description 1
- 238000005188 flotation Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
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
- D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H21/00—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties
- D21H21/14—Non-fibrous material added to the pulp, characterised by its function, form or properties; Paper-impregnating or coating material, characterised by its function, form or properties characterised by function or properties in or on the paper
- D21H21/18—Reinforcing agents
- D21H21/20—Wet strength agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21H—PULP COMPOSITIONS; PREPARATION THEREOF NOT COVERED BY SUBCLASSES D21C OR D21D; IMPREGNATING OR COATING OF PAPER; TREATMENT OF FINISHED PAPER NOT COVERED BY CLASS B31 OR SUBCLASS D21G; PAPER NOT OTHERWISE PROVIDED FOR
- D21H23/00—Processes or apparatus for adding material to the pulp or to the paper
- D21H23/02—Processes or apparatus for adding material to the pulp or to the paper characterised by the manner in which substances are added
- D21H23/04—Addition to the pulp; After-treatment of added substances in the pulp
- D21H23/06—Controlling the addition
- D21H23/14—Controlling the addition by selecting point of addition or time of contact between components
Abstract
The present invention relates to a method for reducing the spreading of additional agent(s) which is/are introduced into the process at a papermaking machine. A flowable paper pulp including fibres and a process liquid and having a consistency of not more than 10% is conducted towards the paper machine's headbox (5). Prior to the introduction (14) of said additional agent the consistency of the pulp is increased to a value higher than 10% by removing (8) process liquid and conducting (11) it in the upstream direction, while compensating process liquid is introduced (13) downstream. The present invention also relates to an arrangement at a paper machine, where separating means (8) are arranged in the process direction before means (14) for introducing additional agent (s). The arrangement further includes means (11) for conveying process liquid separated from the process in an upstream direction in the process, as well as means (13) for a downstream introduction of process liquid from a short circulation in order to compensate for the separated process liquid.
Description
Technical field
The present invention relates in a kind of paper machine in paper machine prepares the continuous process of paper pulp, to reduce the method for the dispersion of adding the additive in the process to, thereby will comprise that fiber and process liquids and viscosity are not more than 10% flowable paper pulp and are directed in the hopper of paper machine.
The present invention also relates to a kind of device aspect the paper machine pulp preparation; In order that be limited in the dispersion of additive in the further process; This process comprises that being used for viscosity is not more than 10% and comprise an inlet of the flowed paper pulp of fibrous material and process liquids; Also relate to and comprise a closed circulation system that is used for the hopper of paper machine, and the device that is used for adding said additive.
In present patent application, paper machine is defined as the machine that is used for making continuous paper web (or roll web).A kind of process of this statement expression of the pulp preparation of in present patent application, using, this process is generally a kind of cellulosic material by comprising fiber; And have paper pulp (or slurry like material) beginning of more or less stablizing viscosity, under mixed condition, prepare paper pulp, further to be sent in the hopper; And paper pulp comprises and is not more than 10% fibrous material, usually at least 1%, and suitably be 2 to 7%; And be generally 3 to 5%, and the process liquids that adds is generally water.Typically, such pulp preparation comprises a so-called Paper pulp machine, in this Paper pulp machine, in the process of decomposing and stirring, decomposites fibrous material in by a kind of cellulose process, and fibrous material is mixed with process water.
Background technology
Traditional papermaking comprises a kind of process, in this process, is directed to the paper pulp that consists essentially of fibrous material and process liquids in the hopper, in order that on a filament (net), dewater.A large amount of subsequent steps with install that process is relevant therewith, comprise that viscosity typically is the container of 3 to 5% slurries, thereby on upstream direction, the liquid of most of surpluses led back in the process.
At the paper of special trait such as facing paper, in the production of painted paper or other paper of other grade, valuable, perhaps be that additive to the process sensitivity is such as titanium dioxide (TiO
2), pigment or similarly usually very expensive composition add in the process, so just a problem occurred, and promptly these additives preservation degree during the course is very low, thus so-called plain boiled water typically possibly include up to 1% or more how such additive.In order to reclaim these additives, conventional procedures comprises by means of for example floating recovery the in retracting device, after this, in pulp preparation, reuses from floating clean water.
When making the paper of this special trait,, in the process of pulp preparation, add said additive usually to process in order to obtain enough the mixing and contact time of paper pulp with the paper grade (stock) of reality.In practice, this means that in fact whole process will thoroughly be caught color.Therefore, when changing the grade of paper, process must initially just reach a kind of balance, and this just requires the time of very long equilibrium establishment, and the change of color simultaneously requires system is cleaned widely, and causes a large amount of losses of material.Even like this, painted paper comprises the blank sheet of paper with pigment coloring, is difficult to produce, and particularly confirms very difficulty of correct color for decoration paper.In addition, exist such fact, will cause instability in these condition last volume coil paper fractures.
Because for example decoration paper will be impregnated in further fine finishining, so its optical property also will change.The refractive index of fiber and impregnating agent is roughly the same, therefore, the concentration of pigment, distribution and these factors of optical property are conclusive for the quality of product.For this reason, the multi-layer product that usually need carry out a kind of test earlier before the actual production in beginning, and this will spend about half an hour, during this in, paper pulp flows in a circulation of machine.
Therefore; By means of international patent application No.PCT/FI93/00214 the applicant; PCT/FI94/00578, disclosed device can partly more effectively be realized this process among PCT/FI96/00052 and the PCT/F101/00365, still; Still there is some problem, although said device makes the plain boiled water of selecting to be suitable for for every kind of special purposes become possibility.Yet, in typical conventional procedure, about 20 to 30 kilograms additive titanium dioxide (TiO will be arranged for every double centner paper
2) through fibrous recovery unit (also the Table I of face) as follows.In the traditional fibre recovery plant that adopts flotation technique, chemical products will cause conglomeration, and this will reduce the optical effect of pigment.Therefore, titanium dioxide will lose optical effect, and some will be for example with the sedimental form loss in the system.In addition; Certainly also have because the relevant fiber recovery that device caused of separating; Investment and operating cost, and the shortcoming of cost that depends on pollution and the cleaning of system also have the retracting device relevant with prior art to require the more shortcoming of the process chemistry of complicacy.
Summary of the invention
Therefore, the objective of the invention is the shortcoming of avoiding relevant with the use of pigment so far, particularly change relevant shortcoming with paper grades.
The present invention is based on following wonderful realization and constitute; Through improve the viscosity of paper pulp at the commitment of process; Be breaking in practice that to be called as macrocyclic device in traditional papermaking be possible, this long circulation i.e. a circulatory system, in this system; The plain boiled water of arranging according to tradition can be recessed in that flow upstream for example arrives Paper pulp machine up to the position of adding paper pulp in the system by the filament (net) of paper machine.Through interrupting this circulation; Can prevent that valuable additive upstream direction from flowing, for example prevent flowing of titanium dioxide and other pigment, otherwise; These titanium dioxide or other pigment may partly lose, and possibly partly pollute whole process chain.
In each characteristic of appended independently claim, disclose characteristics of the present invention, and advantageous embodiment of the present invention is disclosed dependent claims.Therefore; Be characterised in that according to method of the present invention, before introducing said additive and aptly in a process stage that separates, bring up to numerical value to the viscosity of paper pulp greater than 10% through removing process liquids; Wherein, During the course these process liquids are upstream transmitted, on the process direction, add the process liquids that replenishes in downstream simultaneously, these liquid possibly suitably comprise additive.
Correspondingly, be characterised in that, look up in the side of process according to process of the present invention; Before being used for introducing the device of additive; But after said inlet, separator is set, thus, these separators are arranged so that process liquids separates with flowable paper pulp; Thereby the viscosity of paper pulp will be brought up to greater than 10% value, in some cases even advantageously high to 50%.Device of the present invention further comprises a device; Be used for and upstream transmit in the entering process with paper pulp separating process liquid; Also comprise a device, be used for introducing process liquids, in order that replenish separated process liquids from said circulation in downstream.This process liquids possibly comprise additive more or less.
Description of drawings
Below with reference to some advantageous embodiments and accompanying drawing the present invention is described in more detail, in the accompanying drawings:
Fig. 1 has illustrated the device (or layout) according to one embodiment of the present of invention as a schematic diagram; And
Fig. 2 generally shows the paper machine device according to a particularly advantageous embodiment.
The specific embodiment
According to Fig. 1; Paper machine comprises that typically a material that is used to comprise fiber is cellulosic inlet; This material provides with the form of drying slice usually, perhaps in so-called integrated factory, directly provides with the process liquids form that comprises fiber from a cellulose factory.If the form of the material of coming in is a thin slice; Process (or processed) begins with the pulp preparation that comprises so-called Paper pulp machine 2; Thin slice is decomposed, and with for example mix from the process liquids of jar 3, to form the paper pulp of so-called raw material or paper grade (stock).Paper pulp is through different process (or processed) stage 4a, 4b, and 4c, 4d, 4e... or the like, these stages are incoherent with invention basically in this article, and in the end, the hopper 5 through paper machine spreads to paper pulp on the filament (net) 6.This filament (net) passes a machine 7, through suction process liquids is greatly discharged with the form of so-called plain boiled water there, and will keep the paper pulp of moisture little by little to make paper by means of pressue device 9 with dry.
Plain boiled water also comprises chemical products to a certain extent except comprising water, these chemical products will be retained in the paper.The process water band these chemical products; In so-called short circulation, use this process water for the purpose of diluting at some process stages for some part; For example these process stages need said chemical products, perhaps under any circumstance only can cause very little infringement in chemical products described in these process stages.Cleaning is used for the plain boiled water of other purpose in different processes and cleaning stage, on the one hand in order to reclaim chemical products, and the water in order to obtain to clean on the other hand, the water of these cleanings can use in other part of process.Yet each such cleaning course is incomplete to a certain extent, and additionally needs energy, time and device.
Particularly for special paper such as decoration paper and other coloured paper, the amount of manufacturing is less relatively.This makes the production of paper of these grades in integrated paper mill, considerably not have income; And for this reason; The paper of specific class is usually produced in the paper mill of accepting fibrous material basically with the form of dried thin slice, will just need process liquids in the beginning of process like this.In known procedures, usually, this process liquids extracts from the plain boiled water of cleaning with said macrocyclic form.Yet in practice, this process of cleaning liquid also comprises the more or less impurity of part, that is, mainly be the material that belongs to certain other part of process.For coloured paper, the part in these impurity in order to mix well, usually in Paper pulp machine 1, just added these pigment, thereby in fact system will thoroughly be caught color except being made up of pigment ratio such as titanium dioxide other.When for example changing over a kind of various colors; In fact this situation that combines with composition on these expensive different pieces (or parts) that are deposited on system as deposit for example will cause this situation for coloured paper, must the cleaning whole system before the paper of the grade that can make the back.
According to system of the present invention and above-described known technology in essence different are arranged.Through introducing the viscosity that separator temporarily improves paper pulp at position of process at least, thus the other separation 8 of implementation procedure liquid, 8a, it is mobile that this will interrupt these process liquids that comprise valuable additive reverse long-range in system.More early stage separation only disturbs the chemical products flow further downstream of back process just to adopt in order to prevent, and can prevent in a corresponding way that also the design at the valuable additive pollution upper reaches from being quite novel.
In Table I, provided the present invention's principle behind; In this table by means of on the one hand about according to the canonical process (T) of prior art with on the other hand according to the paper pulp viscosity (representing) of the process (U) of one embodiment of the invention with % (percentage); Volume (" X " is the number that rises of liquid in every kilogram of paper pulp) and dry (representing with kilogram) are illustrated in the balance of the interior material of different piece of system; Wherein A is illustrated in the numerical value according to the starting stage 1...4a paper pulp of the process of prior art, A
1Be illustrated in numerical value according to paper pulp after the separation 8 of the present invention; B is illustrated in the situation in the hopper 5; C representes the situation when paper leaves pressue device 9, and D representes that " remaining water " promptly must be to the water of its cleaning before water can reuse, and E is illustrated in the situation in the short circulation:
Table I
Table I by top finds out that clearly every double centner paper has about 20 to 30 kilograms TiO
2Through fibrous recovery unit 10, and when temporarily improving the viscosity of paper pulp, comprise TiO according to the present invention
2The volume of surplus water will significantly reduce with the dry of distributing to it.
In practice, by means of by for example cellulosic production, bleach the concentration technique of having known in essence with decolouring and can advantageously realize removing separating of process liquids.Such device usually can improve the viscosity of the paper pulp that comprises fiber, and the initial value by 2% to 10% typically in about magnitude of 4% to 6%, is brought up to even high to 50% final value under present situation, and maybe in addition higher.
According to an advantageous embodiments, realize separating by means of a pressue device, such pressurization is carried out before being preferably in making beating 4c.Pressurize and advantageously perhaps to carry out among the banded press 8a in the stage that concentrates at the fly press that its type has been known in essence; Thereby dry matter content is greater than 10% in the paper pulp of the ooze shape after pressurization; Particularly in 20% to 50% scope; Be suitably 25% to 40%, preferably be at least 30%.
The process liquids of in pressure process, separating is transferred back in 11 processes in updrift side, turns back to aptly in the Paper pulp machine 2.The suitable liquid 13 of using the corresponding basically liquid of quantity that from the circulation of paper machine, extracts to separate in a dissemination apparatus 12, substituting by process.This is preferably in the device according to the applicant's international patent application No PCT/FI99/00143 and carries out, and perhaps alternatively carries out by means of the mixing arrangement of a kind of screw or certain other type.In order to obtain best mutual mixing, be preferably on the process direction, basically directly at separator 8, dissemination apparatus 12 is set after the 8a.
According to an advantageous embodiments of the present invention; Important additive is carried out (see figure 2) such as the main introducing 14 of very expensive pigment and colouring agent with adding liquid to connect in the dissemination apparatus 12 to, after concentrating, realizes the effectively mutual mixing of additive like this in the stage as far as possible early.Fig. 2 shows also can introduce additive 14,14b than after-stage during the course.Because the introducing of at least a portion of additive is advantageously carried out with the introducing of introducing the liquid 13 that substitutes simultaneously, so, if the liquid that substitutes is taken from the residue content possibility even the higher that part of process of additive, will almost there be any result.
In the practice; The device that the viscosity of the wherein paper pulp of discussing above will improve will produce such situation; Remove with return course liquid be " vacating space " for introducing such additive material; People hope to prevent that upstream direction from disperseing, wherein, this remove and return and says on the function belong to the process stage of morning in a sense.Thereby; Can subsequently additive material and therefore for example the painted part of process be limited in the short circulation of paper machine; And the material that keeps long circulation not have precious materials and/or pollute makes it reach the degree that possibly need such circuit (or loop).
Because system is self-cleaning basically in according to the special advantageous embodiments of Fig. 2; So the plain boiled water of heterogeneity can be provided in practice well; And the remaining liq of suitable cleaning is provided, reaches the degree that these liquid is needed in other part of system.Therefore, can need select correct clean-up performance for these, this has further reduced the loss of valuable additive material.Can in a meticulous filter, handle the very little surplus water of quantity that still keeps, spray water etc. is provided, thereby make filter cake turn back to dissemination apparatus.
Therefore, Fig. 2 shows a kind of particularly advantageous device, in this device, makes the water conversion direction that is extracted by system at the alap position of concentration of material.According to this embodiment, thus can be through a suction box 15 be set below filament (net) reduce these concentration forming a position that this fiber spool of fiber spool plays filter.Make this suction box 15 with not high vacuum work, thereby realize careful filtration, and obtain the very plain boiled water of cleaning.This filter process has reduced the quantity of material, makes can this plain boiled water normally be guided 16 to overflow mechanism 17, and without any need for additional retracting device.
By means of according to device of the present invention; Can realize valuable additive near 100% reservation, simultaneously, no longer need for example independent retracting device; The running light of minimizing during the lamination step of testing, and the time of the foundation new color of shortening after changing color.
Disclose some advantageous embodiments of the present invention in the above, but this point is very clearly to those skilled in the art, also can realizes the present invention with interior with many other modes in the scope of appending claims.
Claims (17)
1. method that is used in paper machine when a kind of flowed pulp preparation as raw material paper pulp goes out paper pulp, reducing the dispersion that is incorporated into an additive the continuous process; To comprise that wherein fiber and process liquids and denseness are not more than the hopper (5) that 10% flowed paper pulp is transferred to paper machine; It is characterized in that; Introducing said additive (14) before; (8,8a) process liquids and transmit (11) this process liquids of removing to the upper reaches of removing the process liquids place and bring up to the numerical value greater than 10% to the denseness of paper pulp adds additional process liquids (13) in the downstream that add the additive place simultaneously through removing.
2. according to the described method of claim 1; It is characterized in that; Through said process liquids is separated from said paper pulp, by means of pressue device (8,8a) improve the denseness of said paper pulp; Make said paper pulp corresponding to the content of 20% to 50% dry wherein, simultaneously said process liquids is transmitted (11) and turn back in the said process to the upper reaches.
3. according to claim 1 or 2 described methods, it is characterized in that, before transmitting said paper pulp, add a kind of liquid (13) that replenishes that contains additive and be the process liquids form from the short circulation of paper machine to said hopper (5).
4. according to the described method of claim 1, it is characterized in that, with the dispersion (12) of the said paper pulp that improves denseness in combination, introduce additive and proportionately introduce said additional process liquids.
5. according to the described method of claim 1, it is characterized in that said additive comprises pigment or other colouring agent.
One kind in paper machine from a kind of as the device aspect the flowed pulp preparation paper pulp of raw material paper pulp; Being used for limiting additive is further disperseing at the upper reaches in the process; Wherein said process comprises that being used for denseness is not more than 10% and comprise the inlet (1,2) of the flowed paper pulp of fibrous material and process liquids, and the circulatory system that is closed comprises the hopper (5) of the filamentary webs that is used for said paper machine and the device that is used for introducing said additive (14); It is characterized in that; Before being used to introduce the device of additive on the direction of process but said inlet (1,2) be provided with afterwards separator (8,8a); Said separator (8; 8a) be arranged to said process liquids is separated from flowable paper pulp, make the denseness of said paper pulp bring up to greater than 10%, being used for upstream, the device of transport process liquid (11) is used for the said process liquids that separates with said paper pulp upstream is transferred to said process; And the device that is used to add additional process liquids (13) is used for introducing in downstream the said process liquids from the said circulatory system that is closed, in order that replenish separated said process liquids.
7. according to the described device of claim 6, it is characterized in that, said separator by means of pressue device (8,8a) can improve the denseness of the paper pulp that comprises fiber, bring up to 20% to 50% final value by 2% to 10% initial value.
8. according to claim 6 or 7 described devices; It is characterized in that, the device that is used to add additional process liquids (13) is arranged to connect with the said inlet that is used for additive, or said inlet after interpolation (14) from supplementing water of the short circulatory system of said paper machine.
9. according to the described device of claim 6; It is characterized in that; Dispersal device (12) is arranged to disperse again the paper pulp with excessive fluid separation applications; Thus, the device that is used for introducing said additive (14) be arranged to on the direction of said process, (8,8a) afterwards said dispersal device (12) interrelates to be close to said separator basically.
10. according to the described device of claim 6; It is characterized in that; Have independent suction box (15) in the setting of the part place of filamentary webs (6), this suction box has a kind of be convenient to realize careful filtration and vacuum plain boiled water, that magnitude is not high that cleans very much, has formed fiber spool in that part of filamentary webs; And the device (16) that is used for transmitting water is arranged to be used for water is upwards transmitted towards independent overflow pipe (17) in system by so independent suction box (15).
11., it is characterized in that, improved the denseness of paper pulp, thereby made the content of paper pulp corresponding to 25% to 40% dry according to the described method of claim 2.
12., it is characterized in that, improved the denseness of paper pulp, thereby made the content of paper pulp corresponding at least 30% dry according to the described method of claim 2.
13. according to the described method of claim 2, it is characterized in that,, improve the denseness of paper pulp through isolating process liquids from paper pulp by means of pressue device.
14. according to the described device of claim 7, it is characterized in that, and said separator (8,8a) can bring up to 20% to 50% final value by means of the initial value of denseness from 4% to 6% that pressue device will comprise the paper pulp of fiber.
15. according to the described device of claim 7, it is characterized in that, and said separator (8,8a) can the denseness of the paper pulp that comprises fiber be brought up to 25% to 40% final value from 4% to 6%.
16. according to each described device in the claim 7,14,15, it is characterized in that, and said separator (8,8a) can the denseness of the paper pulp that comprises fiber be brought up at least 30% final value.
17. according to the described device of claim 6; It is characterized in that; Dispersal device (12) is arranged to disperse the paper pulp with excessive fluid separation applications afterwards again at the process liquids (13) that add to replenish, and thus, the device that is used for introducing said additive (14) is arranged to interrelate with said dispersal device (12); Thereby said dispersal device (12) is arranged on the direction of said process, be close to said separator basically (8,8a) afterwards.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FI20040884A FI116575B (en) | 2004-06-28 | 2004-06-28 | Paper Machine Method and Arrangement |
| FI20040884 | 2004-06-28 | ||
| PCT/FI2005/050246 WO2006000649A1 (en) | 2004-06-28 | 2005-06-28 | A method and an arrangement at a paper machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1997794A CN1997794A (en) | 2007-07-11 |
| CN1997794B true CN1997794B (en) | 2012-03-21 |
Family
ID=32524552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005800216541A Active CN1997794B (en) | 2004-06-28 | 2005-06-28 | A method and an arrangement at a paper machine |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US20080257509A1 (en) |
| EP (1) | EP1766135B1 (en) |
| JP (1) | JP4828528B2 (en) |
| CN (1) | CN1997794B (en) |
| ES (1) | ES2458297T3 (en) |
| FI (1) | FI116575B (en) |
| PL (1) | PL1766135T3 (en) |
| WO (1) | WO2006000649A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3441473A (en) * | 1966-03-16 | 1969-04-29 | West Virginia Pulp & Paper Co | Cellulose derivative compositions and paper containing the derivatives |
| CN1240009A (en) * | 1996-12-06 | 1999-12-29 | 埃卡化学公司 | Process for production of paper |
| US6086718A (en) * | 1996-12-13 | 2000-07-11 | J.M. Huber Corporation | Apparatus for improving filler retention in papermaking |
| CN1274028A (en) * | 1999-05-12 | 2000-11-22 | 韦尔梅特公司 | Method of producing paper or paperboard and paper maker or paperboard maker |
| US6423183B1 (en) * | 1997-12-24 | 2002-07-23 | Kimberly-Clark Worldwide, Inc. | Paper products and a method for applying a dye to cellulosic fibers |
Family Cites Families (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB315229A (en) * | 1928-07-09 | 1931-01-09 | British Arca Regulators Limited | |
| US3794558A (en) * | 1969-06-19 | 1974-02-26 | Crown Zellerbach Corp | Loading of paper furnishes with gelatinizable material |
| SE420329C (en) * | 1978-02-16 | 1984-07-10 | Mo Och Domsjoe Ab | PROCEDURE FOR THE PREPARATION OF GRINDING PAPER |
| FI89728C (en) * | 1992-05-19 | 1993-11-10 | Pom Dev Oy Ab | PROCEDURE FOR THE CIRCULATION OF PROCESS VATTNET I EN PAPER MACHINERY |
| FI97332B (en) * | 1993-12-23 | 1996-08-30 | Pom Technology Oy Ab | Apparatus and method for pumping and separating a mixture of gas and liquid |
| AU4541096A (en) * | 1996-01-25 | 1997-08-20 | Pom Technology Oy Ab | Apparatus and process for feeding stock to a papermachine |
| TW440641B (en) * | 1997-12-24 | 2001-06-16 | Kimberly Clark Co | Paper products and methods for applying chemical additives to cellulosic fibers |
| US6080278A (en) * | 1998-01-27 | 2000-06-27 | Honeywell-Measurex Corporation | Fast CD and MD control in a sheetmaking machine |
| FI105111B (en) * | 1998-02-24 | 2000-06-15 | Pom Technology Oy Ab | Method and apparatus for treating fluid mass |
| US7234857B2 (en) * | 1998-02-26 | 2007-06-26 | Wetend Technologies Oy | Method and apparatus for feeding a chemical into a liquid flow |
| CA2676732C (en) * | 1998-06-12 | 2014-04-15 | Georgia-Pacific Consumer Products Lp | Method of making a paper web having a high internal void volume of secondary fibers and a product made by the process |
| EP1194647A1 (en) * | 1998-10-14 | 2002-04-10 | The Mead Corporation | Colorant application on the wet end of a paper machine |
| FI20000938A0 (en) * | 2000-04-19 | 2000-04-19 | Pom Technology Oy Ab | Procedure and arrangement for suction elements |
| MXPA01005678A (en) * | 2000-06-07 | 2003-08-20 | Kimberly Clark Co | Paper products and methods for applying chemical additives to fibers in the manufacture of paper. |
| FI115081B (en) * | 2001-10-19 | 2005-02-28 | Metso Automation Oy | Method and apparatus for controlling the operation of a pulp department of a paper machine |
| US6993871B2 (en) * | 2003-03-17 | 2006-02-07 | Gutter Pro Usa Llc | Gutter cover having a unique interlocking bracket |
-
2004
- 2004-06-28 FI FI20040884A patent/FI116575B/en active IP Right Grant
-
2005
- 2005-06-28 JP JP2007517324A patent/JP4828528B2/en active Active
- 2005-06-28 CN CN2005800216541A patent/CN1997794B/en active Active
- 2005-06-28 WO PCT/FI2005/050246 patent/WO2006000649A1/en active Application Filing
- 2005-06-28 US US11/631,000 patent/US20080257509A1/en not_active Abandoned
- 2005-06-28 ES ES05761319.2T patent/ES2458297T3/en active Active
- 2005-06-28 PL PL05761319T patent/PL1766135T3/en unknown
- 2005-06-28 EP EP05761319.2A patent/EP1766135B1/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3441473A (en) * | 1966-03-16 | 1969-04-29 | West Virginia Pulp & Paper Co | Cellulose derivative compositions and paper containing the derivatives |
| CN1240009A (en) * | 1996-12-06 | 1999-12-29 | 埃卡化学公司 | Process for production of paper |
| US6086718A (en) * | 1996-12-13 | 2000-07-11 | J.M. Huber Corporation | Apparatus for improving filler retention in papermaking |
| US6423183B1 (en) * | 1997-12-24 | 2002-07-23 | Kimberly-Clark Worldwide, Inc. | Paper products and a method for applying a dye to cellulosic fibers |
| CN1274028A (en) * | 1999-05-12 | 2000-11-22 | 韦尔梅特公司 | Method of producing paper or paperboard and paper maker or paperboard maker |
Also Published As
| Publication number | Publication date |
|---|---|
| US20080257509A1 (en) | 2008-10-23 |
| FI116575B (en) | 2005-12-30 |
| JP2008504449A (en) | 2008-02-14 |
| JP4828528B2 (en) | 2011-11-30 |
| EP1766135A4 (en) | 2012-11-28 |
| CN1997794A (en) | 2007-07-11 |
| ES2458297T3 (en) | 2014-04-30 |
| EP1766135B1 (en) | 2014-03-19 |
| PL1766135T3 (en) | 2014-08-29 |
| EP1766135A1 (en) | 2007-03-28 |
| WO2006000649A1 (en) | 2006-01-05 |
| FI20040884A0 (en) | 2004-06-28 |
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