JP3663581B2 - Wood tar metamorphosis - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a wood tar modified product which can be used effectively.
[0002]
[Prior art]
When the wood component is pyrolyzed, charcoal, wood vinegar, wood tar and the like are obtained. Of these, charcoal and wood vinegar have a variety of uses.
[0003]
However, wood tar is rarely used except for special uses such as wood creosote obtained by distillation purification and used for pharmaceuticals, and it is incinerated as an unnecessary residue. Many were looking for some kind of effective use.
[0004]
[Problems to be solved by the invention]
Therefore, the present invention intends to provide a wood tar modified product that can be used effectively.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, the present invention takes the following technical means.
(1) The wood tar modified product of the present invention is characterized in that wood tar is heated and foamed to have a porous structure.
[0006]
In this wood tar modified product, wood tar is heated and foamed, and the composition of this foam is similar to that of charcoal and is mostly composed of carbon, but its structure is a porous structure. Excellent adsorptivity (hygroscopicity) and heat insulation.
[0007]
Thus, it has a porous (porous) structure and has high adsorptive properties (such as hygroscopicity) and other characteristics. For example, it can be suitably used as a soil conditioner, water purification material, deodorant, and also suitable as a repellent. Can be used. Moreover, since it has a high carbon content, it can be suitably used as a carbon fiber raw material as an alternative to coke and the like, and can also be suitably used as a biomass energy fuel as an alternative to coal and petroleum resources.
(2) You may heat-mold so that it may become a desired shape.
[0008]
If comprised in this way, it can heat-mold, for example in shapes, such as a wall material, a humidity control material, and an underfloor material, and can aim at effective utilization similarly to charcoal. Further, it is light and can be freely molded, and can be molded into a powder or the like.
(3) The foamed wood tar may be fired.
[0009]
When the wood tar thus foamed is fired, the arrangement of the elements changes and the carbon-based material has a higher density. Therefore, it can also be applied as an electromagnetic shielding material.
(4) This wood tar modified product is made from a naturally-derived material called wood, which is very preferable for environmental conservation and can be used in various ways as an eco-material.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0011]
First, wood tar was obtained as follows. That is, as shown in FIG. 1, smoke generated by dry distillation of wood at about 1000 ° C. in a kiln was liquefied and cooled to obtain raw material tar. This raw material tar was distilled under reduced pressure, and the crude wood vinegar was removed to obtain wood tar (precipitated tar). This wood tar was put in a kettle, and was molded by heating to form a plate or a suitable shape at about 300 ° C. for about 4 hours, and foamed to obtain a porous (porous) wood tar modified product.
[0012]
This foam is in the form of a wafer and is composed mostly of carbon. That is, as a result of elemental analysis of the wood tar modification, it was revealed that carbon had a high carbon content of 80.57%, hydrogen of 4.64%, and nitrogen of 1.48%. In addition, an electron micrograph (40.times. Photographing condition) of this wood tar modified was taken. FIG. 2 is a drawing of the electron micrograph. In this micrograph, a number of cavities 1 are shown, and it can be clearly understood that it has a porous structure.
[0013]
By the way, when the wooden tar is distilled under reduced pressure, the black sticky substance that remains in the kettle without being distilled is the wooden pitch. This is the wooden tar excluding the wooden tar oil. was gotten.
[0014]
Furthermore, the foam was fired at about 1500 ° C. or higher to obtain a wood tar modified product.
[0015]
Next, the use state of the wood tar modified product of this embodiment will be described.
[0016]
In this wood tar modified product, wood tar is heated and foamed, and the composition of this foam is similar to that of charcoal and is mostly composed of carbon. It has excellent hygroscopicity and heat insulation properties, and has the advantage that it can be used effectively by taking advantage of this property.
[0017]
In addition, it can be foamed and can be molded in various ways depending on conditions. When it is molded and foamed to a desired shape, it is thermoformed into a shape such as a wall material, humidity control material, or underfloor material. There is an advantage that it can be used effectively in the same way.
[0018]
Furthermore, when the foam is fired at a high temperature (for example, around 1500 ° C. or more), the arrangement of the elements changes to become a higher-density carbon-based material. There is an advantage that it can be applied.
[0019]
【The invention's effect】
The present invention is configured as described above and has the following effects.
[0020]
This foam is excellent in adsorptivity and heat insulation, and can provide a wood tar modified product that can be effectively utilized by taking advantage of this property.
[0021]
Further, when converted into a carbon-based material by firing, it is possible to further effectively utilize the characteristics.
[Brief description of the drawings]
FIG. 1 is a diagram for explaining a method for producing wood tar according to the present invention.
FIG. 2 is an electron micrograph of the obtained wood tar modification.

Claims (3)

  A modified wood tar, characterized by heating and foaming wood tar to form a porous structure.   The wood tar modified product according to claim 1, which is thermoformed so as to have a desired shape. The wood tar modified product according to claim 1 or 2, wherein the foamed wood tar is fired.

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