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
  • B27K3/02—Processes; Apparatus
  • B27K3/08—Impregnating by pressure, e.g. vacuum impregnation
  • B27K3/10—Apparatus
  • B27K3/105—Injection apparatus
• • 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
  • B27K3/02—Processes; Apparatus
  • B27K3/06—Sap stream methods
• • 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
  • B27K3/02—Processes; Apparatus
  • B27K3/08—Impregnating by pressure, e.g. vacuum impregnation
  • B27K3/083—Impregnating by pressure, e.g. vacuum impregnation along the fibers, i.e. longitudinal impregnation

Definitions

• the invention relates to a method for the treatment of cut tree trunks, impregnation of the fibers of a treatment solution, and to an installation for the treatment of cut tree trunks.
• a first impregnation method consists in essentially immersing the trunks in the treatment solution. This method over time has the disadvantage of requiring large pools, containing said treatment solution, and make the impregnation treatment relatively long.
• the wood of the trunks is not treated at heart, which can cause in time a longitudinal burst of the wood starting precisely from the heart.
• injection means of the treatment solution consisting of a deformable bell, adapted to cap one of the front ends of the trunk to be treated. Once secured in a sealed manner at this front end, the volume defined between the inner face of the bell, which is brought the treatment solution, and said end of the trunk associated with said bell constitutes a compression chamber.
• the solution is thus conveyed under pressure into said compression chamber which causes the migration of the solution from the said end of the trunk, longitudinally to the trunk, following the direction of the veins of the wood.
• the migration of the solution displaces the sap that the trunk contains by gradually replacing it with the treatment solution.
• the purpose of the present invention therefore aims to overcome the disadvantages known from the prior art by providing a method for the treatment of cut tree trunks that do not generate or little effluent.
• Another object of the invention is to provide a plant for treating cut tree trunks remedying the aforementioned drawbacks.
• the invention relates to a method for the treatment of cut tree trunks, by impregnation of the fibers of a suitable treatment solution, in which said solution is injected, under pressure, longitudinally to said trunk from one of its ends. front.
• the treatment solution is injected in the direction of the sap flow
• the effluents such as sap
• the trunk during the injection of said treatment solution
• said effluent is recycled by adding at least one treatment product in order to obtain a treatment solution intended for impregnation treatment of a trunk during a new injection phase.
• a volume of treatment solution that is greater than the volume of said effluents expressed by the trunk is injected into the trunk, the effluents are completed with said treatment product but also with water, in order to obtain said treatment solution.
• the invention also relates to an installation for the treatment of cut tree trunks, by impregnating the fibers of a treatment solution, comprising means for injecting the pressurized solution, longitudinally to said trunk from one of the its front ends.
• the plant has means for recycling the effluents expressed by the trunk during the injection of said treatment solution as a component of said treatment solution intended for a new injection phase.
• said means for recycling the effluents as a component of the treatment solution comprise means for collecting said effluents and means for raising said effluents to a storage tank for said effluents, at least one tank for a treatment product, means for for the preparation of the treatment solution by mixing at least said effluents and said treatment product, comprising a tank for said treatment solution;
• a pneumatic pressurizing device is associated with said tank for the treatment solution, said tank thus constituting a pressurizing flask;
• the tank for the treatment solution is equipped with a bubbler
• a weighing device is associated with said tank for the treatment solution
• the injection means of the pressure solution is constituted by a bell, adapted to cover one of the front ends of the trunk, provided on its inner diameter of a pneumatic O-ring;
• said effluent recycling means such as component of the treatment solution further comprises a vessel intended for water, fed in particular by the network water and / or by a wellbore.
• the invention finds a particular application, but not limited to the treatment in the mass of logs of beech or other species.
• the invention relates to a method for treating cut tree trunks by impregnating the fibers of a suitable treatment solution 1.
• said solution is injected, under pressure, longitudinally to said trunk Tr from one of its 41 end ends 41, 42.
• This process allows the treatment by axial impregnation of European hardwoods, mainly beech, treated in the mass of wood.
• European hardwoods mainly beech
• the process can however be applied to other wood species.
• the impregnation is preferably carried out on freshly cut logs by injecting the solution under pressure from one of the ends and applied in the direction of the flow of sap.
• the sap contained in the vessels of the trunk is expressed and gradually replaced by the treatment solution adapted to the essence of the log, the treatment solution pushing the sap outside the ridge.
• the process thus generates a large quantity of effluents (the sap) which will, according to the invention, be recovered and will be used for the preparation of a treatment solution intended for a new injection phase.
• the treatment solution 1 is injected in the direction of the flow of sap,
• the effluents 2, such as sap are recovered, expressed by the trunk during injection of said treatment solution and,
• a volume of treatment solution greater than the volume of said effluents expressed by the trunk is injected into the trunk.
• This difference in volume may result in the addition of a small amount of liquid, from time to time, in the mass of the wood but above all, it ensures that the process does not cause effluents not to cause of waste.
• the effluents 2 are supplemented with water 32 in order to obtain the treatment solution 1.
• the invention also relates to an installation 5 for the treatment of cut tree trunks, by impregnating the fibers of a treatment solution 1, comprising means 6, 7 for injecting the solution under pressure longitudinally to said trunk Tr from of one 41 of its front ends 41, 42.
• the plant has means for recycling the effluents 2 expressed by the trunk Tr during the injection of said treatment solution as a component of said treatment solution intended for a new injection phase.
• FIG. 5 An embodiment of the installation 5 is illustrated, by way of example, in FIG.
• the effluent recycling means comprise:
• the lifting means in the form of a submerged pump 9, whose startup is conditioned by a level sensor 92, such as for example of the float type.
• the sensor controls the pump running, which then conveys the effluents to the storage tank 10.
• the level sensor 92 controls the pump 9 at a standstill.
• the treatment solution is carried out, as a priority, from the effluents 2 contained in the tank 10, if necessary, when the volume of said effluents 2 is insufficient thanks to the water 32 contained in a tank 15.
• This water 32 can come from mains water or even a well.
• a plurality of ducts respectively join each of the tanks 10, 11, 12, 15, respectively containing one of the components of the solution and the tank 14 for the treatment solution 1, each of the pipes being provided with a solenoid valve 132, controlled allowing the closing or opening of the pipe, and a pump 131.
• a weighing device 16 is associated with the tank
• the tank 14 is first filled with the effluents 2 from the tank 10.
• the weight increase of the tank 14 targeted by the weighing device 16 corresponds to the desired volume of the tanks.
• effluents 2 in the solution of treatment the pump 131 and the solenoid valve 132 on the pipe 20 effluents are respectively stopped and closed.
• a bubbler 17 can be started to proceed to stir the components of the solution (effluent 2, treatment product (s) 11 and / or 12, or water 32).
• This bubbler 17 may in particular be supplied with air by means of an associated pneumatic device 13, designed to pressurize the tank 14.
• This vessel 14 for the treatment solution accumulates, thus according to this example, a reactor function for the preparation of said treatment solution, but also a pressure vessel function.
• the pneumatic device 13 thus makes it possible to raise the pressure inside the tank 14 to a level at least equal to the pressure necessary to inject the solution longitudinally to the trunk Tr.
• the injection means may be constituted by a bell 6, adapted to cap one of the front ends 41, 42 of said trunk, provided on its inner diameter with a pneumatic O-ring 7.
• This bell is intended to cap one of the ends 41 of the trunk, the seal being achieved through said O-ring 7 by pressurizing it.
• This bell 6 defines a compression chamber between the front end of the trunk 41 and the inner wall of the bell.
• a flexible hose 46 conveys the treatment solution from the tank 14 into the compression chamber of the bell 6.

Landscapes

• Life Sciences & Earth Sciences (AREA)
• Engineering & Computer Science (AREA)
• Wood Science & Technology (AREA)
• Forests & Forestry (AREA)
• Chemical And Physical Treatments For Wood And The Like (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=41800507

Family Applications (1)

Country Status (3)

Cited By (1)

Families Citing this family (1)

Family Cites Families (4)

• 2009
  • 2009-11-13 FR FR0905451A patent/FR2952574B1/fr not_active Expired - Fee Related
• 2010
  • 2010-11-04 WO PCT/FR2010/000736 patent/WO2011058240A1/fr not_active Ceased
  • 2010-11-04 EP EP10787508A patent/EP2498962A1/de not_active Withdrawn

Non-Patent Citations (1)

Also Published As

Similar Documents

Legal Events