KR101993781B1 - Method for decoloring merbau and device thereof - Google Patents

Abstract

The present invention relates to a method for decolorizing merbau wood and a device therefor and, more specifically, to a method for decolorizing merbau wood which immerses a stack, in which pieces of merbau wood are spaced apart from each other, in a solvent, such that a pigment included in the merbau wood can be completely eluted and removed, and purify eluted wastewater to recycle or discharge the same, thereby preventing environmental contamination, and a device therefor. According to the present invention, the method for decolorizing merbau wood comprises: a binding step of placing a spacer between rectangular lumbers or boards of merbau wood and binding the same in a wood stack form; an immersing step of immersing the bound wood stack in a decolorizing solution for a predetermined time; a washing step of spraying water to the wood stack taken out after being immersed to wash the wood stack; and a drying step of naturally drying the washed wood stack. According to the present invention, the device for decolorizing merbau wood comprises: a decolorizing unit having an immersion tank with a decolorizing solution contained therein, wherein the decolorizing solution is provided to enable the bound wood stack having a spacer disposed between rectangular lumbers or boards of merbau wood to be immersed therein; a washing unit configured to spray water to the wood stack taken out from the decolorizing unit to wash the wood stack; and a purification unit configured to purify the decolorizing solution discharged from the immersion tank.

Description

[0001] METHOD FOR DECOLORING MERBAU AND DEVICE THEREOF [0002]

The present invention relates to a method and apparatus for discoloring mulberry wood, and more particularly, it relates to a method and apparatus for discoloring mulberry wood, and more particularly, to a method for dyeing a mulberry wood by dipping a mulberry wood- The present invention relates to a method and an apparatus for discoloring Mulbau wood that can prevent environmental pollution by recycling or discharging the mulberry wood.

Merbau Wood It is a wood that lives in East and West Asia in East Africa. It is hardwood and heavy, so that it is called 'Pacific Ironwood' in Japan. It is weather resistant, corrosion and insect resistant wood.

These mullbao woods are colored wood containing pigments and are used as furniture materials because of their beautiful antique texture. However, they contain moisture, iron and oil, so they are resistant to corrosion and deformation. .

However, as described above, the Mullbau wood contains pigments, and when used for outdoor landscaping such as an outdoor deck, a stump, and a flat surface, the pigment component (including tannin component) contained in the woody matter is eluted when exposed to rainwater or moisture The surrounding facilities are not only stained by the eluted pigment but also pollute the surrounding environment.

Therefore, in order to use the mulberry wood as an outdoor landscape, it is preferable to discolor the mulberry wood prior to processing or construction. Currently, water is sprinkled on the mulberry wood pile loaded on an empty space to discharge the pigment. There is still a problem that not only the discoloration is sufficiently achieved but also the dissolved pigment is discharged as it is and the environment is contaminated.

A wood powder bleaching machine (2016.10.26) and Japanese Patent Publication JP04044802 (a method of bleaching wood and a device therefor, 1992.02 .14) disclose methods and apparatuses for bleaching and decolorizing wood chips or chips in the form of wood chips or pulp, but these methods and apparatus are applied as they are for decolorizing merbao woods containing water-soluble pigments .

Chinese patent application CN106182288 (2016.12.07): Bleaching treatment method for wood furniture materials China Published Patent CN106042113 (Oct. 26, 2016): Wood powder bleaching machine Japanese Patent Laid-Open Publication No. JP04044802 (1992.02.14): Method of bleaching wood and apparatus there

The present invention has been made in recognition of the above-mentioned points, and it is an object of the present invention to provide a dewatering apparatus for dewatering dewatered mulberry wood, which is capable of sufficiently dissolving and removing pigments contained in mulberry wood, The present invention relates to a method and an apparatus for discoloring Mulbau wood that can prevent environmental pollution by recycling or discharging the mulberry wood.

In order to achieve the above-mentioned object, the present invention provides a method and apparatus for decolorizing a Mullbau wood, comprising a binding step of placing a spacer between a piece of wood or a plate of a Mullbau wood and binding in the form of a pile of wood, A step of immersing in the solution for a predetermined period of time, a washing step of washing and washing the dewatered wood pile after being dipped and water, and a drying step of naturally drying the washed wood pile.

In addition, the Mullbau wood decoloring method according to the present invention is characterized by further comprising the step of purifying the decolorizing solution discharged through the dipping step.

Further, in the Mullbau timber decoloring method according to the present invention, the purification step is characterized in that ferric chloride is added to the decolorized solution discharged, and the eluted pigment is precipitated and removed.

Meanwhile, the Mullbau wood decoloring apparatus according to the present invention comprises a decoloring unit having a dipper tank containing a decoloring solution for immersing a pile of wood in which a spacer is placed between the respective woods or plates of the Mulbau wood, A washing unit for washing the pile of wood by supplying water to the pile of wood recovered from the washing tank, and a purifying unit for purifying the decoloring solution discharged from the immersion tank.

Further, in the Mullbau wood decoloring apparatus according to the present invention, the purifying section may include a filter for filtering foreign substances contained in the decolorizing solution discharged from the immersion tank, and a ferrous chloride solution added to the decoloring solution passed through the filter, And a dye precipitator for discharging the decoloring solution, which has been precipitated by removing the dye, to the outside or the dipping tank.

According to the above-described structure, in the method of decolorizing mulberry wood, the dyes separated from the mulberry wood are immersed in a solvent to sufficiently dissolve and remove the pigment contained in the mulberry wood, So that it is advantageous to prevent environmental pollution by recycling or discharging it.

1 is a flow chart illustrating a flow of a Mullbau wood decoloring method according to an embodiment of the present invention.
2 is a view showing a Mullbau wood decoloring apparatus according to an embodiment of the present invention;
3 is a perspective view illustrating a drying unit of the Mullbau wood decoloring apparatus according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a method and apparatus for discoloring Mulbau wood according to the present invention will be described in detail with reference to the embodiments shown in the drawings.

FIG. 1 is a flowchart illustrating a flow of a Mullbau wood decoloring method according to an embodiment of the present invention. FIG. 2 is a view illustrating a Mullbau wood decoloring apparatus according to an embodiment of the present invention. FIG. 1 is a perspective view illustrating a drying unit of a Mullbau wood decoloring apparatus according to an embodiment of the present invention. FIG.

The Mullbau wood decolorizing method according to the present invention comprises a binding step (S10), an immersion step (S20), a washing step (S30), a drying step (S40), and a purification step (S50).

The binding step S10 is a step of placing the spacers S between the individual pieces or plates of the mulberry wood W and binding them in the form of a wood pile Wb by using the binding band B. [ The spacers (S) are configured to keep the bonded multi-colored wood (W) untouched and kept in a separated state. The decolorizing solution L is directly brought into contact with the molybra wood W in the immersion step S20 to be described later with respect to the molybra wood W separated by the spacers S,

The immersion step S20 is a step of immersing the bound wood pile Wb in the decoloring solution L for a certain period of time. The immersion time is suitable for 2 ~ 96 hours considering the density of wood. Water is used as the decolorizing solution (L) in general because the coloring matter of the mulberry wood (W) is a water-soluble or water-dispersible coloring matter. In some cases, chemicals for chemical treatment of the mulberry wood (W) Solutions dissolved in water may be used.

The washing step (S30) is a step of washing the washed wood pile (Wb) by dipping it in the decoloring solution (L) and washing it.

The drying step S40 is a step of drying the washed wood pile Wb. Drying of the washed wood pile (Wb) is carried out by a natural drying method, but in order to increase the drying speed, a blown method of blowing wind into a wood pile (Wb) may be used.

 The purifying step S50 is a step of purifying the decoloring solution L from which the dye of the Mulberry wood is eluted through the immersion step S20. In step S50, ferrous chloride is added to the decolorizing solution discharged through the immersion step S20 to precipitate and remove the eluted pigment. The decolorized decoloring solution L may be supplied again to the decolorizing solution L of the dipping step S20 or the washing water of the washing step S30.

The Mullbau wood decoloring apparatus according to an embodiment of the present invention includes a decoloring unit 10, a cleaning unit 20, a cleaning unit 30, and a drying unit 40.

The decolorizing unit 10 includes an immersion tank 11 in which a spacer S is placed between the individual pieces or plates of the mulberry wood W and a decoloring solution L for dipping the bound wood dummy Wb Respectively.

An immersion bed 12 is provided at an upper portion of the immersion bed 12 to vertically move up and down so as to immerse and recover a wooden dummy Wb bound to a decolorizing solution L contained in the immersion tank 11. [ The immersion bed 12 is provided with a transport roller 121 for transporting the wood dummy Wb. The bundled wooden pile Wb passes through the conveying roller 1 arranged in the front of the entrance of the immersion tank 11 and arranged to lead to the entrance thereof and is conveyed by the conveying roller 121 provided in the immersion bed 12, (12). The damping bed 12 is lowered and sinks into the immersion liquid L contained in the dipping tank 11, and thereby, when the wood dummy Wb bound on the dipping bed 12 is charged, The bound wood pile Wb placed on the upper part of the immersion bed 12 is immersed in the immersion liquid L. [

The dye is released from the mulberry wood W to the immersion liquid L in a state in which the bound wood dummy Wb is immersed in the decoloring solution L for about 2 to 96 hours, .

A bleeder 13 is installed in the immersion tank 11 so that the bleaching solution L is circulated in a state where the bleaching solution L is immersed in the bleaching solution. The air pumped by the air pump 131 is injected into the water of the decoloring solution L from the bulb 13 and the air is circulated in the decoloring solution L while circulating the decoloring solution L It is brought into contact with the wood pile Wb to promote discoloration.

The washing unit 20 is configured to wash the pile of wood by spraying water on the pile Wb provided from the decoloring unit 10. [ The decolorizing unit 10 sprays the washing water to the upper portion of the wooden pile Wb which is taken out from the decolorizing solution L by the rising of the immersion bed 12 and raised to the upper part of the immersion tank 11, And is configured to clean the dummy Wb.

Referring to FIG. 1, the decoloring unit 10 includes a water spray pipe 21 installed at an upper portion of the immersion tank 11, a water pump 21 for pumping washing water from the water storage tank 23 to the water spray pipe 21, (22), and a water storage tank (23) for storing wash water. The washing water sprayed from the water spray pipe 21 is discharged from the decolorizing solution L to wash the dummy Wb lifted to the upper portion of the dipping tank 11 to be dropped into the dipping tank 11. [

The purifying unit 30 purifies the decoloring solution discharged from the dipping tank 11. Referring to the drawings, the purifier 30 includes a filter 31 for filtering foreign substances contained in the decoloring solution L discharged from the dipping tank 11, and a ferrous chloride solution And a dye precipitator 32 for precipitating the eluted dye and discharging the decoloring solution, which has been precipitated by the dye, to the outside or the dipping tank.

The decoloring solution L discharged from the immersion tank 11 flows into the filter 31 through the discharge tube 111. The filter 31 has a filtration area 311 filled with a filter medium such as gravel or sand and a decoloring solution L filtered by foreign matter in the filtration area 311, And the overflow region 132 discharged therefrom is formed. The filtration area 311 and the overflow area 132 are separated from each other by a separation wall 313 and a passage through which water flows from the lower part of the separation wall 313 to the filtration area 311 and the overflow area 132, The decoloring solution L injected into the upper portion of the filtration region 311 through the discharge pipe 111 is filtered by the filter medium while moving downward and the filtered decoloring solution L is separated from the separation wall 313 Flows into the overflow area 132 through the passages formed in the lower part of the upper part of the upper part of the upper part of the upper part of the upper part of the upper part of the upper part.

The coloring matter generator 32 includes a flocculation zone 321 into which iron chloride (FeCl2) is added as an inorganic flocculant for flocculating the pigment and a flocculant 321 in which the coloring matter C coalesces to form a pigment precipitate C And a storage region 322 in which the decolorizing solution L having been dyed by being precipitated is overflowed from the flocculation region 321 and is stored while being stored. The decoloring solution L stored in the storage region 322 is discharged to the outside through the discharge pipe 323 or reintroduced into the dipping tank 11 through the return pipe 323a connected to the dipping tank 11 .

The drying unit 40 is a structure for drying the washed wood pile Wb. Referring to the drawings, the drying unit 40 includes a drying chamber 41 for forming a space in which a wood pile Wb is charged to dry, and a drying chamber 41 for sucking and discharging the humidified air from the drying chamber 41, An exhaust fan 42 installed on the ceiling of the drying chamber 41 and a blowing fan 40 installed on the side wall of the drying chamber 41 d to blow the wood pile Wb from the side of the wood pile Wb into the drying chamber 41. [ (42). A shutter or an obscuration film 411 for blocking the drying chamber 41 from the outside is installed at the entrance and the exit at the front of the drying chamber 41 and a conveying roller 44 for moving the wooden dummy Wb is provided on the floor. Respectively. In addition, a heating means for raising or maintaining the temperature for quick drying may be provided in the drying chamber 41. [

The Mullbau wood decoloring method and apparatus described above and shown in the drawings are only one embodiment for carrying out the present invention and should not be construed as limiting the technical idea of the present invention. The scope of protection of the present invention is defined only by the matters set forth in the following claims, and the embodiments improved and changed without departing from the gist of the present invention are obvious to those having ordinary skill in the art to which the present invention belongs It will be understood that the invention is not limited thereto.

W Mulbaw Wood
Wb wood pile
S spacer
B coupling band
L decolorizing solution
C pigment precipitate
10 decoloring unit
11 Immersion tank
12 Immersion bed
121 Feed Roller
13 wide engine
131 air pump
20 Washing section
21 water pipe
22 Water pump
23 Water storage tank
30 purifying section
31 Filtration tank
311 Filtration area
312 Overflow area
313 Separation wall
32 Precipitation tank
321 Coagulation zone
322 storage area
323 Discharge tube
40 Drying section
41 Drying room
42 Exhaust fan
43 blowing fan
44 Feed Roller

Claims (5)

A decoloring unit having a dipper tank provided with a decoloring solution for placing a spacer between the sheet or plate material of the Mulberry wood and the decoupling solution to be immersed in the pile of wood, and a pile of wood to sprinkle water on the pile of wood recovered from the decoloring unit. And a washing unit for washing the laundry,
The above-mentioned decoloring unit is further provided with an immersion bed in which the above-mentioned wood dummy is put in the upper part, and the wood pile which is placed on the upper part is vertically lifted and lowered from the upper part of the above-mentioned immersion tank so as to immerse and recover in the decoloring solution contained in the above- And,
Wherein the immersion tank is provided with a wing tube so that the air pumped by the air pump is injected into the water of the decoloring solution,
Wherein the washing unit is provided with a water spray pipe for discharging wash water to the upper portion of the wood pile raised from the decolorizing solution to the upper portion of the immersion tank by the rising of the immersion bed. The method according to claim 1,
And a purifying unit for purifying the decoloring solution discharged from the immersion tank,
The purifier may further include a filter for filtering foreign substances contained in the decoloring solution discharged from the dipping tank, and a ferrous chloride solution added to the decoloring solution that has passed through the filter to precipitate the eluted pigment, And a dye precipitator for discharging the dye to the dipping tank. A method of decolorizing a Mullbau wood using the Mullbau wood decoloring apparatus of claim 1,
A binding step in which spacers are placed between pieces or plates of a mulberry wood and bound in the form of a pile of wood,
An immersion step of immersing the wood pile bound in the decolorizing section of the wood decoloring apparatus into the decoloring solution for a predetermined time,
A washing step in which the water spray pipe of the washing section sprinkles water on the pile of wood which is immersed in the decoloring solution,
And drying the pile of washed wood naturally. The method of claim 3,
Further comprising the step of purifying the decolorizing solution discharged through the immersion step. 5. The method of claim 4,
Wherein the purifying step comprises adding ferrous chloride to the discharged decoloring solution to precipitate and remove the eluted pigment.

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