WO2003026859A1 - Procede de recuperation de copeaux et de fibres provenant de pieces residuelles derivees du bois - Google Patents
Procede de recuperation de copeaux et de fibres provenant de pieces residuelles derivees du bois Download PDFInfo
- Publication number
- WO2003026859A1 WO2003026859A1 PCT/DE2002/002618 DE0202618W WO03026859A1 WO 2003026859 A1 WO2003026859 A1 WO 2003026859A1 DE 0202618 W DE0202618 W DE 0202618W WO 03026859 A1 WO03026859 A1 WO 03026859A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- impregnation solution
- interior
- container
- digestion
- timber
- 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.)
- Ceased
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27N—MANUFACTURE BY DRY PROCESSES OF ARTICLES, WITH OR WITHOUT ORGANIC BINDING AGENTS, MADE FROM PARTICLES OR FIBRES CONSISTING OF WOOD OR OTHER LIGNOCELLULOSIC OR LIKE ORGANIC MATERIAL
- B27N3/00—Manufacture of substantially flat articles, e.g. boards, from particles or fibres
- B27N3/007—Manufacture of substantially flat articles, e.g. boards, from particles or fibres and at least partly composed of recycled material
Definitions
- the invention relates to a process for the recovery of chips and fibers from wood-based material residues, old furniture, production residues, waste and other wood-based materials containing glue that is glued with urea-formaldehyde binders or with other hydrolyzable or chemically digestible binders.
- Pieces of wood material have absorbed at least 50% of their own weight in impregnation solution, the remaining liquid is drained off.
- the wood material pieces impregnated in this way are heated to 80 ° C - 120 ° C; the wood-based material thus broken up is then sorted by sieving and / or air separation. According to a modified method, the wood-based material pieces are soaked. Impregnation solution added, which is dimensioned such that the entire liquid is absorbed by the wood material pieces when the wood material pieces have absorbed at least 50% of their own weight of impregnation solution.
- the wood material pieces impregnated in this way are then heated to 80-120 ° C. Impregnation and the effects of temperature take place in a digestion tank in which an overpressure of up to 2 bar can prevail.
- DE 196 40 503 C1 describes a method and an apparatus for the extraction of secondary chips and fibers.
- old furniture and production waste are shredded into a lumpy raw material, from which fines are then separated.
- the starting material is evacuated from the Reaction container and by the vacuum generated thereby, the air trapped in cavities.
- the material is mixed with a preheated impregnation solution, which causes swelling and weight gain to almost twice the weight of the material used during a given swelling period, after which excess impregnation solution added is drained off.
- this pre-swollen material is subjected to hot water vapor at excess pressure and decomposed into a crumbly digestion mass essentially formed from chip and fiber components.
- the swelling time of the material used is between 10 and 20 minutes, while the reaction vessel has a swelling temperature of 75-90 ° C.
- the steam is introduced with a steam temperature between 1 20-140 ° C and a steam pressure of 1.9-3.6 bar evenly distributed over the interior of the container into the reaction container.
- DE 42 24 629 A1 discloses a method for recycling wood-based materials, in which the fragments previously produced are exposed to a preferably saturated water vapor atmosphere under high pressure and at high temperature in a digestion step over a certain digestion time.
- the digestion step uses a temperature between 1 20 ° C and 180 ° C and a pressure between 2 and 1 1 bar.
- the hot steam from the digestion step can be used in a preheating step at normal pressure to preheat and dampen the fragments.
- DE-AS 1 201 045 describes a process for the recovery of chip material from waste, sawdust, garbage etc. interspersed with hardened binders for the production of chipboard or the like.
- the waste is to be exposed to the action of strained steam, the steam being at an overpressure of 1-5 atm act on the waste for a period of between 0.5 and 4 hours.
- the invention has for its object to improve the economy in the method described above for the recovery of chips and fibers.
- a digestion tank provided in its upper area with an exhaust gas valve and in its interior under atmospheric pressure is filled with the wood material pieces and then closed with the exhaust gas valve open;
- the preheated impregnation solution is then introduced into the digestion tank until the contents in the digestion tank are completely covered with the impregnation solution;
- the steam displacing the air from the interior of the container leads to a preheating of the wood-based material pieces, but not to their digestion, since there is too little water in the steam for this purpose, or too little water can condense on the latter when the steam flows through the filling material. It is important from the point of view of energy saving that the steam displacing the air from the interior of the container can be used together with the displaced air heated by it to preheat the impregnation solution.
- the steam is introduced into the interior of the container until a temperature of J> 100 ° C can be determined, the pressure of the introduced steam always being slightly above the surrounding atmospheric pressure to prevent air from flowing back into the interior of the container.
- the impregnation solution is introduced into the interior of the container in excess until the contents in the digestion container are completely covered. If the preheated Impregnation solution has a temperature of, for example, 80 ° C, and the wood material pieces are heated to, for example, 60 ° C as a result of the application of steam, the impregnation liquid introduced into the digestion tank cools down somewhat. It can therefore be expedient to maintain the supply of steam into the interior of the container even while the impregnation solution is being introduced and acted upon. The resulting equalization of the decrease in steam also has an advantageous effect, inter alia, for steam generation.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Dry Formation Of Fiberboard And The Like (AREA)
Abstract
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2001144793 DE10144793A1 (de) | 2001-09-12 | 2001-09-12 | Verfahren zur Wiedergewinnung von Spänen und Fasern aus Holzwerkstoffreststücken |
| DE10144793.0 | 2001-09-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2003026859A1 true WO2003026859A1 (fr) | 2003-04-03 |
Family
ID=7698684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/DE2002/002618 Ceased WO2003026859A1 (fr) | 2001-09-12 | 2002-07-17 | Procede de recuperation de copeaux et de fibres provenant de pieces residuelles derivees du bois |
Country Status (2)
| Country | Link |
|---|---|
| DE (1) | DE10144793A1 (fr) |
| WO (1) | WO2003026859A1 (fr) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011077155A1 (fr) | 2009-12-22 | 2011-06-30 | Arthur James New | Technologie de recyclage |
| WO2021176326A1 (fr) | 2020-03-03 | 2021-09-10 | Unilin, Bv | Procédé de production d'un panneau de particules ou d'un panneau de fibres de bois |
| WO2023031763A1 (fr) | 2021-08-31 | 2023-03-09 | Flooring Industries Limited, Sarl | Procédé de production de panneaux de fibres de bois |
| BE1029724A1 (nl) | 2021-08-31 | 2023-03-22 | Flooring Ind Ltd Sarl | Proces voor de productie van houtvezelplaat |
| EP4477372A1 (fr) | 2023-06-16 | 2024-12-18 | Take Out S.r.l. | Procédé à sec et à température ambiante pour le recyclage de matériaux à base de fibres de bois |
| BE1031715A1 (fr) | 2023-06-16 | 2025-01-16 | Take Out | Procédé à sec et à température ambiante de recyclage matière de matériaux à base de fibre de bois |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995024998A1 (fr) * | 1994-03-15 | 1995-09-21 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Procede de recuperation de copeaux et de fibres par desagregation de residus de materiaux derives du bois, de vieux meubles, de residus de production, de dechets et d'autres materiaux contenant des materiaux derives du bois |
-
2001
- 2001-09-12 DE DE2001144793 patent/DE10144793A1/de not_active Withdrawn
-
2002
- 2002-07-17 WO PCT/DE2002/002618 patent/WO2003026859A1/fr not_active Ceased
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995024998A1 (fr) * | 1994-03-15 | 1995-09-21 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Procede de recuperation de copeaux et de fibres par desagregation de residus de materiaux derives du bois, de vieux meubles, de residus de production, de dechets et d'autres materiaux contenant des materiaux derives du bois |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011077155A1 (fr) | 2009-12-22 | 2011-06-30 | Arthur James New | Technologie de recyclage |
| EP4549675A2 (fr) | 2020-03-03 | 2025-05-07 | Unilin, BV | Procédé de production de panneau de particules ou de panneau de fibres de bois |
| WO2021176326A1 (fr) | 2020-03-03 | 2021-09-10 | Unilin, Bv | Procédé de production d'un panneau de particules ou d'un panneau de fibres de bois |
| BE1028121A1 (nl) | 2020-03-03 | 2021-09-27 | Unilin | Proces voor de productie van spaanplaat of houtvezelplaat |
| DE112021000435T5 (de) | 2020-03-03 | 2022-11-03 | Unilin Bv | Verfahren zur herstellung einer spanplatte oder holzfaserplatte |
| EP4567216A2 (fr) | 2020-03-03 | 2025-06-11 | Unilin, BV | Procédé de production de panneau de particules ou de panneau de fibres de bois |
| EP4567215A2 (fr) | 2020-03-03 | 2025-06-11 | Unilin, BV | Procédé de production de panneau de particules ou de panneau de fibres de bois |
| EP4567214A2 (fr) | 2020-03-03 | 2025-06-11 | Unilin, BV | Procédé de production de panneau de particules ou de panneau de fibres de bois |
| US12325148B2 (en) | 2020-03-03 | 2025-06-10 | Unilin, Bv | Process for the production of particle board or wood fiber board |
| WO2023031763A1 (fr) | 2021-08-31 | 2023-03-09 | Flooring Industries Limited, Sarl | Procédé de production de panneaux de fibres de bois |
| BE1029722A1 (nl) | 2021-08-31 | 2023-03-22 | Flooring Ind Ltd Sarl | Proces voor de productie van houtvezelplaat |
| BE1029724A1 (nl) | 2021-08-31 | 2023-03-22 | Flooring Ind Ltd Sarl | Proces voor de productie van houtvezelplaat |
| EP4570986A2 (fr) | 2021-08-31 | 2025-06-18 | Unilin, BV | Procédé de production de panneaux de fibres de bois |
| EP4624656A2 (fr) | 2021-08-31 | 2025-10-01 | Unilin, BV | Procédé de production de panneaux de fibres de bois |
| BE1031715A1 (fr) | 2023-06-16 | 2025-01-16 | Take Out | Procédé à sec et à température ambiante de recyclage matière de matériaux à base de fibre de bois |
| WO2024256640A1 (fr) | 2023-06-16 | 2024-12-19 | Take Out Srl | Procédé à température ambiante et à sec pour le recyclage de matériaux à base de fibres de bois |
| EP4477372A1 (fr) | 2023-06-16 | 2024-12-18 | Take Out S.r.l. | Procédé à sec et à température ambiante pour le recyclage de matériaux à base de fibres de bois |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10144793A1 (de) | 2003-03-27 |
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