Disclosed herein is a method of remediating chromated copper arsenate (CCA) treated timber. Particularly, the method comprises contacting the CCA timber with an oxidative solvent and an acidic solvent which provides remediated timber and a variety of extracts containing amongst other things the metals of concern. One or more of the steps is conducted using continuous counter current extraction (CCE).

Disclosed herein is a method of remediating chromated copper arsenate (CCA) treated timber. Particularly, the method comprises contacting the CCA timber with an oxidative solvent and an acidic solvent which provides remediated timber and a variety of extracts containing amongst other things the metals of concern. One or more of the steps is conducted using continuous counter current extraction (CCE).

The present disclosure relates to the technical field of wood preparation, and in particular, to a method and device for preparing a magnetic bamboo wood. A technical problem to be solved in the present disclosure is that: Lignin in a wood will affect the soaking efficiency of the wood during soaking of the wood. In the present disclosure, sodium hydroxide and sodium sulfite in a ratio of 2:1 are put into the soaking bucket in sequence through the high-precision powder weighing equipment and are fully dissolved in distilled water to obtain a solution, so that the solution reacts with the lignin in the bamboo wood to elute the lignin, which increases the porosity of the bamboo wood, improves the soaking efficiency, and improves the magnetism of the bamboo wood.

The present invention relates to a method for continuous acetylation of wood elements. The acetylation is conducted with an acetylation medium at a pressure of at least 1.5 barg in a substantially oxygen free environment. Alternatively, the method according to the invention comprises the steps of: (a) feeding wood elements in a substantially oxygen free environment to a continuous acetylation reactor, and (b) treating the wood elements with an acetylation medium in the continuous acetylation reactor under wood acetylation reaction conditions, at a pressure of at least 1.5 barg.

The process according to the present invention allows to acetylate wood elements to a high acetyl content in a very efficient way, without compromising on the quality of the material. The acetylated wood elements can be used in the production of medium density fibreboards with superior qualities such as dimensional stability and durability.

The invention relates to a method for drying, modelling and/or thermally modifying wooden parts, comprising the steps of: a) arranging the wooden parts in a bath; b) filling the bath with a liquid, for instance paraffin or (linseed) oil, wherein the wooden parts are sealed from the ambient air by the liquid; c) the liquid being heated for some time, preferably between 100 C. and 300 C., for the purpose of drying, modelling and/or thermally modifying the wooden parts; d) removing the wooden parts from the bath. The invention also relates to a device for performing the method according to the invention for drying, modelling and/or thermally modifying wooden parts, comprising:a bath adapted to receive the wooden parts, which bath is intended to receive a liquid such as paraffin or (linseed) oilheating means for heating the liquid. Finally, the invention relates to a covering and rack as parts of the device according to the invention.

According to the present invention there is provided a method of treating timber with a creosote-containing preservative formulation adapted for use at substantially ambient temperature. The formulation comprises: creosote; one or more surfactants such that when diluted with a predetermined quantity of water, the creosote is present as an oil-in-water macroemulsion or microemulsion; and optionally, an anti-foaming agent and/or a fire retardant. It is found empirically that the inventive concentrate allows for the use of creosote, a known-effective biocide, without many of the drawbacks inherent in such use.

Thermo treatment process for wood comprising the following steps: a. Placing the wood batch to be treated in a treatment chamber; b. Exchanging the atmosphere inside the treatment chamber by evacuating the air, replacing the evacuated air by an inert gas atmosphere in gas form, at 8 to 12 bar pressure; c. Heating the inert gas atmosphere up to 165 to 175 C., d. increasing the pressure in the inert gas atmosphere to 14-16 bar; e. maintaining the temperature in step c. and the pressure in step d. for from 90 to 150 minutes; f. cooling the inert gas atmosphere to a temperature of 20 to 35 C. g. retrieving the treated wood batch.

Provided are an ecological slope anti-corrosion timber pile and a treatment device and method therefor, belonging to the field of ecological engineering. The device includes a gasification furnace, and first, second and third carbonization chambers, each internally provided with a main gas pipeline, and multiple rows of radially distributed branch gas pipes are vertically disposed thereon and provided with electronic igniters. Multiple rows of radially distributed timber piles are vertically inside the carbonization chambers and between the branch gas pipes. The gasification furnace is connected to the main gas pipeline of the first carbonization chamber through a gas booster pump. The first carbonization chamber is connected to an air blower, the first and second carbonization chambers are connected through a joint pipe, the second and third carbonization chambers are connected through a pipeline, and the third carbonization chamber is connected to the gasification furnace through a gas delivery pipe.

A method of drying and staining wood includes feeding green wood with a varying moisture content into an oven and drying the green wood in the oven. The residence time of the green wood in the oven and the temperature of the oven are selected according to a time and temperature profile based on a pre-drying moisture content of the green wood to produce dry surface wood having a moisture content of approximately 15% or less at the dry surface. The method further includes conveying the dry surface wood to a stain booth and staining all sides of the dry surface wood directly following the drying. A system for performing the method and a stained wood product produced according to the method are also considered.

An arrangement for feeding wood particles into an impregnating stage of a wood treatment process comprises a feed silo (301, 701), at least one impregnating vessel (305, 601, 602, 603, 703) for receiving wood particles into said impregnating stage, and two or more conveyors (302, 303, 304, 501, 502, 503, 702) between said feed silo (301, 701) and said at least one impregnating vessel (305, 601, 602, 603, 703), for transferring wood particles from said feed silo (301, 701) to said at least one impregnating vessel (305, 601, 602, 603, 703). Each of said conveyors (302, 303, 304, 501, 502, 503, 702) is a compressing conveyor for applying pressure to the wood particles on their way through the respective conveyor.