A wooden drumstick that is treated by direct heating by exposure to a flame to improve hardness characteristics by altering the state of fibers in an outer layer of the drum stick relative to inner fibers below the outer layer. A method of manufacturing a treated drumstick includes selecting a wooden starting material, forming a drumstick profile from the wooden starting material, and exposing the drumstick profile directly to a flame.

A continuous wood modification by heat process, that comprises: stacking wooden boards on a trolley at intervals; exerting pressure on said wooden boards; transferring said wooden boards to a heating kiln, pre-heated by microwave and hot air circulation, that has a water vapor flow of 2-5 meter3/hour, a temperature range of 60-100° C., and a humidity range of 50%-100%; transferring said wooden boards to a shallow drying kiln, pre-heated by microwave and hot air circulation, that has a drying temperature of 100-120° C.; transferring said wooden boards to a deep drying kiln, pre-heated by microwave and hot air circulation, that has a drying temperature of 120-120° C., an oxygen content range of 1-10%, and a water vapor flow rate of 1-10 m3/hour; transferring said wooden boards to a carbonization kiln, pre-heated by microwave and hot air circulation, that has a temperature range of 120-180° C., an oxygen content range of 1%-5%; transferring said wooden boards to a slow cooling kiln, that has a temperature range of 120-130° C., and an oxygen content range of 1%-10%; transferring said wooden boards to a fast cooling kiln, that has a temperature range of 90-100° C.; transferring said wooden boards to a rewetting kiln, that has a humidity range of 50%-100%; providing water vapor to said rewetting kiln; while being in said rewetting kiln, and when a temperature range of said wooden boards is 40-60° C., and a moisture content of said wooden boards is 6%-10%, transferring said wooden boards out of said rewetting kiln; wherein each of said heating kiln, said shallow drying kiln, said deep drying kiln, said carbonization kiln, said slow cooling kiln, said fast cooling kiln, and said rewetting kiln comprises a fan, a partition board, a shunt hood, and an exhaust port; wherein said partition board divides an interior of each of said heating kiln, said shallow drying kiln, said deep drying kiln, said carbonization kiln, said slow cooling kiln, said fast cooling kiln, and said rewetting kiln into an upper chamber and a lower chamber; wherein said shunt hood is disposed in said upper chamber; wherein said fan, said shunt hood, and said lower chamber are connected and form a air channel; wherein said lower chamber comprises a shunt plate, disposed along left and right walls of a kiln; wherein said shunting plate comprises a plurality of sieve holes that are disposed gradually dense from top to bottom; wherein one end of said shunt plate is connected with said partition board and the other end is connected with the bottom of a kiln.

The present invention describes a method for thermo-treatment of wood, where said method comprises the following steps: a) selecting the wood to be as free from knots as possible b) introducing the wood to a temperature increase up to approximately 173° C.; c) maintaining the wood at an ambient temperature of 173° C. for 3-5 hours; d) decreasing the temperature to approx. 20° C.; e) introducing the wood into an autoclave wherein a mixture of linseed oil and mineral oil is applied to the wood, and allowing the mixture to penetrate the wood f) retrieving and storing the treated wood. Furthermore a timber member made with wood treated according to the method is disclosed.

Thermally-modified panels, boards, and flooring manufactured from engineered wood, including, but not limited to, oriented-strand board (OSB). These products may be in the form of a sub-floor panel or substrate, a board, a panel, a combined panel, tile, or similar form. Heat treatment or thermal modification of wood or wood-based composites provides wood-based products with improved water resistance, dimensional stability, microbial resistance, and related biological durability with reduced use of harmful chemicals and/or the elimination of hazardous chemical pretreatments.

Methods and systems for recovering terpenes and controlling the composition of terpenes collected from wood drying processes are provided. In particular, a sorbent having adsorbed materials, including terpenes, from a wood drying process can be desorbed in a desorber, resulting in a gaseous stream containing terpenes, which can be condensed and collected from the gaseous stream. The conditions of desorption can be controlled to ensure a desirable amount of alpha-pinene and beta-pinene relative to other terpenes, such as dipentene and camphene, in the collected terpenes.

A continuous wood modification by heat process, that comprises: stacking wooden boards on a trolley at intervals; exerting pressure on said wooden boards; transferring said wooden boards to a heating kiln, pre-heated by microwave and hot air circulation, that has a water vapor flow of 2-5 meter3/hour, a temperature range of 60-100° C., and a humidity range of 50%-100%; transferring said wooden boards to a shallow drying kiln, pre-heated by microwave and hot air circulation, that has a drying temperature of 100-120° C.; transferring said wooden boards to a deep drying kiln, pre-heated by microwave and hot air circulation, that has a drying temperature of 120-120° C., an oxygen content range of 1-10%, and a water vapor flow rate of 1-10 m3/hour; transferring said wooden boards to a carbonization kiln, pre-heated by microwave and hot air circulation, that has a temperature range of 120-180° C., an oxygen content range of 1%-5%; transferring said wooden boards to a slow cooling kiln, that has a temperature range of 120-130° C., and an oxygen content range of 1%-10%; transferring said wooden boards to a fast cooling kiln, that has a temperature range of 90-100° C.; transferring said wooden boards to a rewetting kiln, that has a humidity range of 50%-100%; providing water vapor to said rewetting kiln; while being in said rewetting kiln, and when a temperature range of said wooden boards is 40-60° C., and a moisture content of said wooden boards is 6%-10%, transferring said wooden boards out of said rewetting kiln; wherein each of said heating kiln, said shallow drying kiln, said deep drying kiln, said carbonization kiln, said slow cooling kiln, said fast cooling kiln, and said rewetting kiln comprises a fan, a partition board, a shunt hood, and an exhaust port; wherein said partition board divides an interior of each of said heating kiln, said shallow drying kiln, said deep drying kiln, said carbonization kiln, said slow cooling kiln, said fast cooling kiln, and said rewetting kiln into an upper chamber and a lower chamber; wherein said shunt hood is disposed in said upper chamber; wherein said fan, said shunt hood, and said lower chamber are connected and form a air channel; wherein said lower chamber comprises a shunt plate, disposed along left and right walls of a kiln; wherein said shunting plate comprises a plurality of sieve holes that are disposed gradually dense from top to bottom; wherein one end of said shunt plate is connected with said partition board and the other end is connected with the bottom of a kiln.

Methods and systems for obtaining exhaust streams from wood drying processes and controlling emissions in exhaust streams from wood drying processes are provided. Methods and systems can include pre-treatment steps, such as removing particulate matter and/or heating a process exhaust stream from a wood dryer, in order to obtain an exhaust stream that is suitable for downstream recovery of terpenes from said exhaust stream. Exhaust streams can be contacted with a sorbent to remove volatile organic compounds, and other emissions, generating a purified air stream that is able to be released into the environment without further purification or oxidation.

Methods and systems for recovering terpenes and controlling the composition of terpenes collected from wood drying processes are provided. In particular, a sorbent having adsorbed materials, including terpenes, from a wood drying process can be desorbed in a desorber, resulting in a gaseous stream containing terpenes, which can be condensed and collected from the gaseous stream. The conditions of desorption can be controlled to ensure a desirable amount of alpha-pinene and beta-pinene relative to other terpenes, such as dipentene and camphene, in the collected terpenes.

Methods and systems for obtaining exhaust streams from wood drying processes and controlling emissions in exhaust streams from wood drying processes are provided. Methods and systems can include pre-treatment steps, such as removing particulate matter and/or heating a process exhaust stream from a wood dryer, in order to obtain an exhaust stream that is suitable for downstream recovery of terpenes from said exhaust stream. Exhaust streams can be contacted with a sorbent to remove volatile organic compounds, and other emissions, generating a purified air stream that is able to be released into the environment without further purification or oxidation.

The present invention relates to a process for preparing a modified wood product. More specifically, the invention relates to a method of performing thermal modification, wherein the thermally modified wood is suitable for load bearing use. The present invention also relates to a modified wood product produced using said process.