EP2172590A1 - Procédé et dispositif de préparation de matières brutes lors de la fabrication de papier, de carton ou de plaques de fibres - Google Patents
Procédé et dispositif de préparation de matières brutes lors de la fabrication de papier, de carton ou de plaques de fibres Download PDFInfo
- Publication number
- EP2172590A1 EP2172590A1 EP20090170023 EP09170023A EP2172590A1 EP 2172590 A1 EP2172590 A1 EP 2172590A1 EP 20090170023 EP20090170023 EP 20090170023 EP 09170023 A EP09170023 A EP 09170023A EP 2172590 A1 EP2172590 A1 EP 2172590A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- raw materials
- fiber suspension
- nitrogen
- paper
- production
- 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.)
- Granted
Links
- 239000002994 raw material Substances 0.000 title claims abstract description 38
- 238000000034 method Methods 0.000 title claims abstract description 15
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 77
- 239000000835 fiber Substances 0.000 claims abstract description 56
- 239000000725 suspension Substances 0.000 claims abstract description 43
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 38
- 238000000227 grinding Methods 0.000 claims abstract description 20
- 239000000123 paper Substances 0.000 claims abstract description 12
- 239000010893 paper waste Substances 0.000 claims abstract description 8
- 239000011111 cardboard Substances 0.000 claims abstract description 6
- 238000002360 preparation method Methods 0.000 claims abstract description 5
- 239000000976 ink Substances 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 10
- 239000011087 paperboard Substances 0.000 claims 1
- 239000011094 fiberboard Substances 0.000 description 8
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 4
- 230000008961 swelling Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 229910000019 calcium carbonate Inorganic materials 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 229920001131 Pulp (paper) Polymers 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
- D21B1/00—Fibrous raw materials or their mechanical treatment
- D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
- D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
- D21B1/14—Disintegrating in mills
- D21B1/16—Disintegrating in mills in the presence of chemical agents
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
- D21D1/00—Methods of beating or refining; Beaters of the Hollander type
- D21D1/20—Methods of refining
-
- 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
- D21H23/16—Addition before or during pulp beating or refining
Definitions
- the invention relates to a process for the preparation of raw materials for the production of paper, cardboard or fibreboard, in which the raw materials are processed to an aqueous fiber suspension, which is then ground in a mill.
- the invention further relates to a corresponding device.
- the chemically and mechanically worked up fiber raw materials e.g. Wood pulp, ground pulp or shredded waste paper optionally with other additives
- fiber raw materials e.g. Wood pulp, ground pulp or shredded waste paper optionally with other additives
- the mechanical properties (strength properties) of the paper, the cardboard or the fiberboard are influenced by the freeness of the fiber suspension.
- the fibers are shortened, fibrillated and squeezed, increasing their flexibility and their specific surface area. This also increases the number of possible bonds between the fibers. These in turn determine the mechanical strength of the final product.
- the required grinding work is associated with considerable energy expenditure.
- the degree of grinding and the grinding parameters approximately 120 to 200 kWh per ton of fiber material must be used.
- highly milled fiber suspensions have a lower dewatering rate in the wire section than unground or low milled fiber suspensions, so that the degree of milling substantially determines the performance of the paper machine.
- the object of the invention is to further reduce the energy required for grinding the fiber suspension in the refiner.
- the inventive method for the preparation of raw materials for the production of paper, cardboard or fiberboard in which the raw materials are processed into an aqueous fiber suspension, which is then ground in a mill, is thus characterized in that the raw materials and / or the fiber suspension Nitrogen is added to the grinding process.
- the duration of the treatment depends on the pulp used and the desired properties of the final product.
- the addition of nitrogen results in a swelling of the fibers due to a hitherto unexplored mechanism.
- the swelling of the fibers in turn facilitates the subsequent grinding of the fiber suspension. In this way, a considerable part of the energy used for the grinding can be saved.
- a precipitate may be added to the fiber suspension in the manner previously described to provide additional energy savings in the milling process.
- the subsequent grinding is carried out in a customary manner, for example according to one in the DE 10 2004 039 986 A1 described method.
- the entry of the nitrogen takes place by means of suitable entry systems, for example lances, by means of which the nitrogen is introduced at high speed, for example at ultrasonic speed, into the fiber suspension or into the raw materials and then penetrates into the fibers.
- the water contained in the fibers is thus at least partially in the liquid state before the grinding.
- dry raw materials these can also be exposed to a nitrogen atmosphere.
- the nitrogen can be introduced in gaseous form or, as explained in more detail below, in the cryogenic liquefied state. In the case of a gaseous feed, the use of cold nitrogen gas is advantageous.
- the nitrogen treatment can also be carried out in two or more successive steps, wherein, for example, the raw materials before the production of the fiber suspension and then the fiber suspension nitrogen is supplied.
- An advantageous development of the invention provides that the nitrogen is added to the fiber suspension and / or the raw materials in cryogenic liquefied form.
- the liquid nitrogen is introduced by a suitable device, such as a lance or a nozzle, in the fiber suspension or the raw materials and / or mixed for example by means of agitator or vortex worm cooler with the fiber suspension or with the raw materials.
- a suitable device such as a lance or a nozzle
- the addition of liquid nitrogen, particularly in fiberboard production results in a total of less fiber needed to produce the fiberboard, with substantially the same strength as those fiberboards conventionally produced.
- the fiberboards are thereby lighter, at the same time raw material is saved in the production process.
- the raw materials or the fiber suspension are cooled by the addition of the cryogenic, liquefied or gaseous nitrogen at least locally to a width of below 0 ° C and then brought to a temperature above 0 ° C, for example 2-4 ° C.
- the raw materials are thus first cooled and then heated again to a value above 0 ° C and fed to the grinding. This procedure leads to a particularly effective swelling of the raw materials or the fiber suspension, through which the grinding is facilitated.
- a further preferred embodiment of the invention is characterized in that , when waste paper is used as raw material, the nitrogen is supplied to the waste paper prior to the production of the fiber suspension for the purpose of better removability of existing printing inks. For reasons not yet fully understood, the addition of nitrogen facilitates the detachment of printing inks from the recovered paper fibers.
- the object of the invention is also by a device for the preparation of raw materials for the production of paper, cardboard or fiberboard, with a Means for providing the raw materials, a device for producing a fiber suspension from the fibers of the raw materials, and with a mill for grinding the fiber suspension, dissolved, which is characterized in that the mill means for supplying nitrogen, in particular liquid nitrogen, in the Raw materials and / or upstream of the fiber suspension.
- an input of nitrogen into the raw materials and / or into the fiber suspension thus takes place by means of the device for supplying the nitrogen.
- the device for supplying the liquid nitrogen comprises suitable, designed for the supply of cryogenic media entry devices.
- the nitrogen in cryogenic liquefied form of the aqueous fiber suspension with a in the DE 10 2006 027 561 A1 fed described arrangement is integrated in the nitrogen supply, which opens only in the presence of a predetermined pressure of the supplied nitrogen over the pressure in the fiber suspension and releases the addition of liquid nitrogen. This will effectively avoid icing of the supply of liquid nitrogen;
- Dry pulp bales for example containing waste paper
- the pulp bales are fed to the pulper via a conveyor belt.
- the conveyor belt sprays the pulp bales with liquid nitrogen.
- the entry of liquid nitrogen in the pulper The fiber suspension cooled locally to temperatures below 0 ° C. by the addition of nitrogen then heats up to values of more than 0 ° C. by contact with the surrounding warmer suspension and is fed to the grinding in this state.
- the nitrogen therefore does not lead to embrittlement due to icing, but to a swelling facilitating the grinding of the fibers.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Mechanical Engineering (AREA)
- Paper (AREA)
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL09170023T PL2172590T3 (pl) | 2008-09-29 | 2009-09-11 | Sposób i urządzenie do przygotowania surowców przy produkcji papieru, tektury lub płyt drewnopochodnych |
| SI200931358T SI2172590T1 (sl) | 2008-09-29 | 2009-09-11 | Postopek in naprava za pripravo surovin za izdelavo papirja, lepenke ali vlaknenih plošč |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008049336A DE102008049336A1 (de) | 2008-09-29 | 2008-09-29 | Verfahren und Vorrichtung zur Aufbereitung von Rohstoffen bei der Herstellung von Papier, Pappe oder Faserplatten |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP2172590A1 true EP2172590A1 (fr) | 2010-04-07 |
| EP2172590B1 EP2172590B1 (fr) | 2015-11-11 |
Family
ID=41565186
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP09170023.7A Not-in-force EP2172590B1 (fr) | 2008-09-29 | 2009-09-11 | Procédé et dispositif de préparation de matières brutes lors de la fabrication de papier, de carton ou de plaques de fibres |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP2172590B1 (fr) |
| DE (1) | DE102008049336A1 (fr) |
| ES (1) | ES2559384T3 (fr) |
| PL (1) | PL2172590T3 (fr) |
| SI (1) | SI2172590T1 (fr) |
| UA (1) | UA102066C2 (fr) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013034811A1 (fr) * | 2011-09-07 | 2013-03-14 | Upm-Kymmene Corporation | Procédé de fabrication d'un composant de matériau, composant de matériau et son utilisation et produit de papier |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3239013A1 (de) * | 1982-10-21 | 1984-04-26 | SCA Beteiligungen GmbH, 2000 Hamburg | Bleiche von zellstoffen unter verwendung von no(pfeil abwaerts)2(pfeil abwaerts) |
| DE10115421A1 (de) * | 2001-03-29 | 2002-10-02 | Voith Paper Patent Gmbh | Verfahren und Aufbereitung von Faserstoff |
| DE102006042429B3 (de) | 2006-09-09 | 2008-01-24 | Messer Austria Gmbh | Verfahren zum Entfernen von Kleberresten bei der Wiederverwertung von Altpapier |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2310459A1 (de) * | 1973-03-02 | 1974-09-12 | Fritz Dr Opderbeck | Verfahren zum erzeugen von faserstoff aus pflanzlichem material |
| DE19628324A1 (de) * | 1996-07-13 | 1998-01-15 | Hocepro Gmbh I G | Fibrillen aus Cellulose |
| DE102004039986A1 (de) | 2004-08-18 | 2007-12-20 | Voith Patent Gmbh | Verfahren zur Mahlung von Fasern, insbesondere Papierfasern |
| DE102006027561A1 (de) | 2006-06-14 | 2007-12-20 | Messer France S.A.S | Vorrichtung zum Eindosieren eines kryogenen Mediums |
-
2008
- 2008-09-29 DE DE102008049336A patent/DE102008049336A1/de not_active Ceased
-
2009
- 2009-09-11 EP EP09170023.7A patent/EP2172590B1/fr not_active Not-in-force
- 2009-09-11 PL PL09170023T patent/PL2172590T3/pl unknown
- 2009-09-11 SI SI200931358T patent/SI2172590T1/sl unknown
- 2009-09-11 ES ES09170023.7T patent/ES2559384T3/es active Active
- 2009-09-28 UA UAA200909919A patent/UA102066C2/uk unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3239013A1 (de) * | 1982-10-21 | 1984-04-26 | SCA Beteiligungen GmbH, 2000 Hamburg | Bleiche von zellstoffen unter verwendung von no(pfeil abwaerts)2(pfeil abwaerts) |
| DE10115421A1 (de) * | 2001-03-29 | 2002-10-02 | Voith Paper Patent Gmbh | Verfahren und Aufbereitung von Faserstoff |
| DE102006042429B3 (de) | 2006-09-09 | 2008-01-24 | Messer Austria Gmbh | Verfahren zum Entfernen von Kleberresten bei der Wiederverwertung von Altpapier |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013034811A1 (fr) * | 2011-09-07 | 2013-03-14 | Upm-Kymmene Corporation | Procédé de fabrication d'un composant de matériau, composant de matériau et son utilisation et produit de papier |
Also Published As
| Publication number | Publication date |
|---|---|
| SI2172590T1 (sl) | 2016-04-29 |
| ES2559384T3 (es) | 2016-02-11 |
| UA102066C2 (uk) | 2013-06-10 |
| PL2172590T3 (pl) | 2016-05-31 |
| EP2172590B1 (fr) | 2015-11-11 |
| DE102008049336A1 (de) | 2010-04-15 |
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