EP0318528A1 - Verfahren zur behandlung von frischholz. - Google Patents
Verfahren zur behandlung von frischholz.Info
- Publication number
- EP0318528A1 EP0318528A1 EP88903339A EP88903339A EP0318528A1 EP 0318528 A1 EP0318528 A1 EP 0318528A1 EP 88903339 A EP88903339 A EP 88903339A EP 88903339 A EP88903339 A EP 88903339A EP 0318528 A1 EP0318528 A1 EP 0318528A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- wood
- drying
- nitric acid
- moisture
- injection
- 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
- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000002023 wood Substances 0.000 claims abstract description 41
- 238000001035 drying Methods 0.000 claims abstract description 32
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000000835 fiber Substances 0.000 claims abstract description 7
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 7
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims abstract description 6
- -1 alkaline earth metal salt Chemical class 0.000 claims abstract description 5
- 150000001342 alkaline earth metals Chemical class 0.000 claims abstract description 4
- 239000001814 pectin Substances 0.000 claims abstract description 4
- 235000010987 pectin Nutrition 0.000 claims abstract description 4
- 229920001277 pectin Polymers 0.000 claims abstract description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000012153 distilled water Substances 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims description 7
- 229910052783 alkali metal Inorganic materials 0.000 claims description 4
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims description 2
- 229920002522 Wood fibre Polymers 0.000 claims description 2
- 239000007864 aqueous solution Substances 0.000 claims description 2
- 239000007921 spray Substances 0.000 claims description 2
- 239000002025 wood fiber Substances 0.000 claims description 2
- 238000002347 injection Methods 0.000 claims 4
- 239000007924 injection Substances 0.000 claims 4
- 239000001110 calcium chloride Substances 0.000 claims 1
- 229910001628 calcium chloride Inorganic materials 0.000 claims 1
- 150000003839 salts Chemical class 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 12
- 238000010438 heat treatment Methods 0.000 description 5
- 239000003570 air Substances 0.000 description 4
- 230000001133 acceleration Effects 0.000 description 3
- 238000007493 shaping process Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000001311 chemical methods and process Methods 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000005507 spraying Methods 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000002925 chemical effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000005445 natural material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/16—Inorganic impregnating agents
- B27K3/18—Compounds of alkaline earth metals
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K3/00—Impregnating wood, e.g. impregnation pretreatment, for example puncturing; Wood impregnation aids not directly involved in the impregnation process
- B27K3/16—Inorganic impregnating agents
- B27K3/32—Mixtures of different inorganic impregnating agents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/001—Heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27K—PROCESSES, APPARATUS OR SELECTION OF SUBSTANCES FOR IMPREGNATING, STAINING, DYEING, BLEACHING OF WOOD OR SIMILAR MATERIALS, OR TREATING OF WOOD OR SIMILAR MATERIALS WITH PERMEANT LIQUIDS, NOT OTHERWISE PROVIDED FOR; CHEMICAL OR PHYSICAL TREATMENT OF CORK, CANE, REED, STRAW OR SIMILAR MATERIALS
- B27K5/00—Treating of wood not provided for in groups B27K1/00, B27K3/00
- B27K5/06—Softening or hardening of wood
Definitions
- the invention relates to a process for the treatment of fresh wood, in the course of which the wood prepared for drying, e.g. Lumber, is dried in a drying room in a known manner at a temperature between 40 ° C and 100 ° C to at least 30 moisture content.
- the wood prepared for drying e.g. Lumber
- the first three methods are used. With these three methods, the desired wood moisture content can be determined by means of time and space
- dry wood production generally consists of the following three main phases:
- the moisture content of the heating material dried using the currently known method can be adjusted to the desired level, but
- the aim of the inventive method is to remedy the deficiencies mentioned and to create a drying method which, in comparison with the previous drying methods, accepts the wood deformations, shape and dimension deviations, the tensions remaining therein and the duration of the drying process minimum reduced.
- Part of the gases in the air combine in the course of a reaction to form oxide, which converts to acid in the water and is able to release the alkaline earth metal incorporated during the growth of the wood if we salt it together with a distilled aqueous one Use the solution as a catalyst to accelerate the effect of this acid.
- the essence of the invention is that the distilled aqueous solution of the alkali metal salt is mixed with a nitric acid and the mixture thus obtained is injected at least once into the drying room.
- this spray agent the hard pectin is loosened, which is located in the fibers of the wood and prevents the removal of moisture, and the alkali earth metal builds up between the wood fibers.
- the composition of the mixture to be injected is as follows:
- concentration of nitric acid can be between 65-96H.
- This process enables the dry wood obtained in the course of the artificial drying process carried out in a few days to have the same properties as the wood that has been naturally dried in a few years.
- This process also enables the material to be made plasticizable and machinable without cutting (e.g. bendable, rotatable compressible, stretchable, can be dismantled into fibers, etc.) by reinforcing the natural chemical process, with relatively low wood moisture, and somi during the Growth within the known limits or keeping almost the same value as a living tree.
- the application can also be extended to other areas not previously used, e.g. enables the chipless shaping of wood materials previously thought to be inflexible and the shapeable shaping without damage caused by temperature
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Chemical And Physical Treatments For Wood And The Like (AREA)
- Drying Of Solid Materials (AREA)
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT88903339T ATE65206T1 (de) | 1987-05-04 | 1988-04-20 | Verfahren zur behandlung von frischholz. |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
HU871983A HU199088B (en) | 1987-05-04 | 1987-05-04 | Method for treating raw timbers |
HU198387 | 1987-05-04 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0318528A1 true EP0318528A1 (de) | 1989-06-07 |
EP0318528B1 EP0318528B1 (de) | 1991-07-17 |
Family
ID=10957150
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP88903339A Expired - Lifetime EP0318528B1 (de) | 1987-05-04 | 1988-04-20 | Verfahren zur behandlung von frischholz |
Country Status (9)
Country | Link |
---|---|
US (1) | US4977686A (de) |
EP (1) | EP0318528B1 (de) |
BR (1) | BR8807042A (de) |
CS (1) | CS277182B6 (de) |
DD (1) | DD272628A1 (de) |
HU (1) | HU199088B (de) |
PL (1) | PL155814B1 (de) |
RO (1) | RO105398B1 (de) |
WO (1) | WO1988008780A1 (de) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB0206970D0 (en) * | 2002-03-25 | 2002-05-08 | Nutrel Products Ltd | Delivery system |
FI20041448A0 (fi) * | 2004-11-10 | 2004-11-10 | Tekmawood Oy | Puutavaran suojausmenetelmä ja -laitteisto |
JP2011189515A (ja) * | 2010-03-11 | 2011-09-29 | Olympus Corp | 圧縮木製品の製造方法 |
DE102013223415A1 (de) * | 2013-11-15 | 2015-05-21 | Holzwerke Gmach GmbH | Verfahren zur künstlichen Holzalterung |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1855666A (en) * | 1930-04-12 | 1932-04-26 | Leo P Curtin | Process of preserving wood |
US2500954A (en) * | 1947-03-04 | 1950-03-21 | Us Agriculture | Method involving the use of chemicals for increasing the drying rate of wood |
CH485616A (de) * | 1964-02-13 | 1970-02-15 | Lonza Werke Gmbh | Verfahren zur Herstellung von keramisch gebundenen feuerfesten Körpern |
DE2460392A1 (de) * | 1974-12-20 | 1976-06-24 | Wilke Klaus Diether | Verfahren zur herstellung von nichtbrennbaren holzspanplatten |
-
1987
- 1987-05-04 HU HU871983A patent/HU199088B/hu not_active IP Right Cessation
-
1988
- 1988-04-20 EP EP88903339A patent/EP0318528B1/de not_active Expired - Lifetime
- 1988-04-20 WO PCT/HU1988/000023 patent/WO1988008780A1/de active IP Right Grant
- 1988-04-20 RO RO137540A patent/RO105398B1/ro unknown
- 1988-04-20 BR BR888807042A patent/BR8807042A/pt unknown
- 1988-04-20 US US07/300,065 patent/US4977686A/en not_active Expired - Fee Related
- 1988-04-27 CS CS882854A patent/CS277182B6/cs unknown
- 1988-05-02 DD DD88315310A patent/DD272628A1/de not_active IP Right Cessation
- 1988-05-04 PL PL1988272246A patent/PL155814B1/pl unknown
Non-Patent Citations (1)
Title |
---|
See references of WO8808780A1 * |
Also Published As
Publication number | Publication date |
---|---|
PL272246A1 (en) | 1989-05-16 |
PL155814B1 (en) | 1992-01-31 |
US4977686A (en) | 1990-12-18 |
CS277182B6 (en) | 1992-12-16 |
DD272628A1 (de) | 1989-10-18 |
CS8802854A2 (en) | 1991-07-16 |
EP0318528B1 (de) | 1991-07-17 |
WO1988008780A1 (en) | 1988-11-17 |
RO105398B1 (ro) | 1994-12-21 |
BR8807042A (pt) | 1989-10-03 |
HU199088B (en) | 1990-01-29 |
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