Process for wood torrefaction, and construction material produced therefrom

Abstract

The present disclosure includes methods for enhancing hardness and dimensional stability of a wood element. In one embodiment, the method includes placing the wood element in a compression assembly set to a compression temperature between about 120 DEG C and about 230 DEG C in a temperature cycling matter and cooling it slowly under low atmospheric pressure.

Description

[0001] Cross-reference related patent applications

[0002] This application claims priority to prior patent application US 62 / 069,921, filed October 29, 2014, the specification of which is hereby incorporated by reference in its entirety. Background technique

[0003] Charring is a gentle way of cracking down liquid wax, tar and dust and extracting their volatile components. These compounds are harmful to the environment and need to be destroyed or recycled according to specific processes. The present invention discloses a production process of how to control the waste of chemical compounds and safely convert them into renewable energy.

[0004] Charring is a process that is known to make wood more durable. Simply burning the surface of the wood can make it more durable. The key to this invention is to improve wood quality and durability by improving the charring process.

[0005] Charring involves heating wood at very high temperatures, usually from 190°C to 240°C, in a ...

Examples

example 1

[0084] Exemplary Process #1

[0085] According to one embodiment, the method of the invention is a cycle of temperature and time for the controlled decomposition of natural organic polymers, in which the individual layers of the material such as cellulosic moisture are given the desired properties of the building material or element content, stability, durability, strength, toughness, weatherability, paintability and bonding properties.

[0086] According to one embodiment of the present invention, the carbonization device is cycled according to a specific temperature and time, and alternately injected with gas or vacuum. For example, the table below describes a process that provides optimized structural material steps by implementing them in a single device:

[0087]

[0088] Table 1 - Example Process #1

example 2

[0090] Demonstration Process #2

[0091] According to another embodiment, the method of the invention may involve the following cycles in the carbonization plant:

[0092]

[0093] Table 2 - Example Process #2

example 3

[0095] Exemplary Process #3

[0096] According to another embodiment, the minimum necessary steps of the method of the present invention to process cellulose-based materials and appropriately modify the composition and structure of the materials are:

[0097]

[0098] Table 3 - Example Process #3

[0099] The other steps proposed in this invention will define the desired properties of the wood according to the intended use.

[0001] Cross-reference related patent applications

[0002] This application claims priority to prior patent application US 62 / 069,921, filed October 29, 2014, the specification of which is hereby incorporated by reference in its entirety. Background technique

[0003] Charring is a gentle way of cracking down liquid wax, tar and dust and extracting their volatile components. These compounds are harmful to the environment and need to be destroyed or recycled according to specific processes. The present invention discloses a production process of how to control the waste of chemical compounds and safely convert them into renewable energy.

[0004] Charring is a process that is known to make wood more durable. Simply burning the surface of the wood can make it more durable. The key to this invention is to improve wood quality and durability by improving the charring process.

[0005] Charring involves heating wood at very high temperatures, usually from 190°C to 240°C, in a ...

Examples

example 1

[0084] Exemplary Process #1

[0085] According to one embodiment, the method of the invention is a cycle of temperature and time for the controlled decomposition of natural organic polymers, in which the individual layers of the material such as cellulosic moisture are given the desired properties of the building material or element content, stability, durability, strength, toughness, weatherability, paintability and bonding properties.

[0086] According to one embodiment of the present invention, the carbonization device is cycled according to a specific temperature and time, and alternately injected with gas or vacuum. For example, the table below describes a process that provides optimized structural material steps by implementing them in a single device:

[0087]

[0088] Table 1 - Example Process #1

example 2

[0090] Demonstration Process #2

[0091] According to another embodiment, the method of the invention may involve the following cycles in the carbonization plant:

[0092]

[0093] Table 2 - Example Process #2

example 3

[0095] Exemplary Process #3

[0096] According to another embodiment, the minimum necessary steps of the method of the present invention to process cellulose-based materials and appropriately modify the composition and structure of the materials are:

[0097]

[0098] Table 3 - Example Process #3

[0099] The other steps proposed in this invention will define the desired properties of the wood according to the intended use.

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