KR20160135050A

KR20160135050A - Wood briquette and method for preparing the same

Info

Publication number: KR20160135050A
Application number: KR1020150068015A
Authority: KR
Inventors: 배영재; 허소영; 배광석; 배광빈; 배수빈; 윤병선
Original assignee: 대한임업 주식회사; 허소영; 배광석; 배영재
Priority date: 2015-05-15
Filing date: 2015-05-15
Publication date: 2016-11-24

Abstract

The present invention relates to a wood briquette comprising any one selected from the group consisting of: a half carbide or carbide of a plant crushed into a size equal to or less than 1 mm; a mixture of a half carbide or carbide of a plant crushed into a size equal to or less than 1 mm, and red clay; a mixture of a half carbide or carbide of a plant crushed into a size equal to or less than 1 mm, shell of shellfish, and red clay; and a mixture of a half carbide or carbide of a plant crushed into a size equal to or less than 2 mm, a sodium carbonate powder or an aqueous solution of a sodium carbonate powder, and red clay. The present invention also relates to a method for preparing the wood briquette. The wood briquette according to the present invention is environment-friendly new & renewable energy that enables resources, left to a mountain or the like or discarded to a fishing village or the like, to be recycled, that rarely discharge contaminants, and that has desirable calorie, desirable ignition time and desirable combustion time compared to an existing briquette, a wood pellet, etc. while rarely generating toxic gas that is generated by an existing briquette.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to wood bullets,

[0001] The present invention relates to a method for producing a wood tan, which is an environmentally friendly new renewable fuel produced by adding remaining shell wastes such as branches, leaves and roots of trees, which are left in the mountains, will be.

Recently, the world is suffering from various natural disasters such as tsunami and earthquake by the damage of the abnormal weather phenomenon caused by global warming. The world is making every effort to prevent global warming, and the Korean government is actively developing low-carbon green growth and renewable energy, which are the vision of future development.

Among them, forests capable of adsorbing carbon dioxide are a key area of low carbon green growth. The forest itself has the ability to prevent global warming. It is urgent to develop eco-friendly energy sources with minimal damage to forests.

Recently, wood pellets, which are attracting attention as eco-friendly energy, are wooden fuel produced by collecting logs and making them into sawdust and molding them at high temperature and high pressure. The size is about 0.6 × 1 ~ 4cm.

Various methods for producing such wood pellets and wood pellets produced therefrom have been disclosed, for example, Korean Patent Laid-Open Nos. 10-2011-0030738 and 10-2011-0080568.

However, the timber pellets have a problem of low economic efficiency due to a considerable period of time for raw material supply and demand, because the logging cycle usually uses logging and thinning materials for 25 to 50 years of logging. In spite of the recent increase in usage, There is a problem that the use thereof is not easy due to an increase in the price of imported pellets.

On the other hand, briquettes are processed anthracite which is used for heating purposes, and it is a holed coal briquette which is made of anthracite coal as the main ingredient in KS E 3731: 1989, and specifies five kinds as shown in Table 1 below. The briquettes used in homes are usually No. 2. The calorific value is about 4,500 kcal / kg.

Kinds Diameter (mm) Height (mm) Weight (kg) Dry weight (kg) No. 1 150 142 3.6 3.3 No. 2 158 152 4.5 4.1 No. 3 162 155 4.8 4.4 No. 4 157 161 4,9 4.5 No. 5 215 142 7.5 6.8

However, briquettes are often caused by toxic gases when they are burned, and the use of briquettes has gradually decreased due to the problem of disposal of ashes left on the briquettes. Today, they are mainly used for agricultural or industrial purposes.

SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a wood pellet which is superior in thermal efficiency to wood pellets while using residual wood of the trees and is free from toxic gas generated by combustion of briquettes Which is an environmentally friendly new renewable fuel, and a method of manufacturing the same.

It is another object of the present invention to provide an eco-friendly wood chip by recycling the shell of a shellfish discarded in a fishing village and a method of manufacturing the same.

Another object of the present invention is to provide a wood-free carbon which does not use any chemical additives such as a binder and a combustion agent in addition to the residual wastes (branches, leaves, roots, etc.) .

Another object of the present invention is to provide a wood carbon which protects the environment by using it as an environmentally friendly fertilizer or the like which alters the acidic soil by using the remaining wood carbon materials after burning the wood carbon, and a method for producing the same .

In one aspect, the present invention relates to a method for producing a woody semi-carbide or carbide crushed to a size of 2 mm or less; A mixture of semi-carbides or carbides and ocher in woods crushed to a size of 2 mm or less; A mixture of shell shells and half shells or carbides of crushed wood in a size of 2 mm or less and loess; And a mixture of a semi-carbide or a carbide of a wood pulverized to a size of 2 mm or less and a sodium carbonate powder or an aqueous solution thereof and a yellow loam.

According to the present invention, the 'tree' may be selected from the group consisting of coniferous trees such as pine trees, pine trees, fir trees, spruce trees, spruce trees, bamboo trees, ginkgo trees and ginkgo trees, and hardwoods such as oak trees, oak trees, maple trees, Means plant.

In the present invention, the 'tree' is preferably crushed, semi-carbonated or carbonized.

Here, the pulverization means that the pulverization is finely crushed to a length and width of 2 mm or less, preferably 0.1 to 2 mm, preferably 0.1 to 1 mm.

In the present invention, 'shellfish' means mollusks having shells such as oysters, mussels, arcs, eardrum, clams, clams, abalones, and shells.

In the present invention, the 'shell of shellfish' is preferably finely crushed to a size of 30 mm or less, preferably 1 to 30 mm, more preferably 2 to 20 mm. It is possible to have an effect of increasing the calorific value of the wood carbon according to the present invention by the shell of the shellfish and to make it possible to use as the material of the environmentally friendly fertilizer and the like which alkalize the acid soil of the remaining wood coal ash after burning.

In the present invention, the term "semi-carbonization" refers to a reaction in which the reaction is performed at a temperature lower than that of carbonization of charcoal. Specifically, the reaction is carried out at a temperature of about 300 ° C. or less for 1 hour or less It says.

In the present invention, 'carbonization' means pyrolysis in the process of making charcoal.

In the present invention, the 'loess' is preferably in the form of a fine powder having a size of 1 mm or less, and the loess is advantageous in that it is easier to mold the wood according to the present invention.

In the present invention, the 'sodium carbonate aqueous solution' may be a solution prepared by dissolving sodium carbonate powder in water, or a solution in which the shell of the shellfish is dissolved in water and the precipitate is removed. The sodium carbonate aqueous solution may have an effect of increasing the calorific value of the wood carbon according to the present invention, and the remaining wood carbon materials after burning can be used as materials for environmentally friendly fertilizers and the like which alkalize the acidic soil.

In the present invention, 'wood tan' is an environmentally friendly renewable fuel having a predetermined size and shape, and the predetermined size and shape are preferably 1 ball, 2 balls, 3 balls, 4 balls, 5 balls, 6 balls, 7 Balls with 8 balls, 9 balls, etc.

Such wood shavings are made of any one of the following.

(1) Half-carbides or carbides of wood, crushed to a size of 2 mm or less;

(2) a mixture of semi-carbides or carbides and yellow loam of wood, crushed to a size of 2 mm or less;

(3) a mixture of shellfish shells and shells of semi-carbohydrates or carbides of wood pulverized to a size of 2 mm or less and loess;

(4) Mixture of semi-carbides or carbides of wood, ground sodium carbonate powder or its aqueous solution, and loess, pulverized to a size of 2 mm or less.

(1) The semi-carbide or carbide of the wood which is ground to a size of 2 mm or less according to the present invention is made of the above-mentioned material.

(2) In the case of wood carcass according to the mixture of semi-carbides or carbides and ocher of the wood crushed to a size of 2 mm or less of the present invention, the half-carbide or carbide and the ocher of the wood are in a weight ratio of 2 to 5: 1, 3 to 5: 1, more preferably 4 to 5: 1. As the content of the semi-carbide or carbide of the tree increases, the calorific value increases.

(3) wood carbohydrates or carbohydrates of woods crushed to a size of 2 mm or less, (4) wood carbides according to the mixture of semi-carbides or carbides of wood crushed to a size of 2 mm or less of the present invention and crust of shellfish, In the case of wood carburized with sodium carbonate powder or a mixture of its aqueous solution and loess, the half-carbides or carbides of the wood and the loess are in a weight ratio of 1 to 5: 1, preferably 2 to 5: 1, more preferably 2 to 4 : 1. The shell of the shellfish is mixed with 2 to 7 parts by weight, preferably 2 to 6 parts by weight, more preferably 3 to 6 parts by weight, based on 100 parts by weight of the whole of the semi-carbide or carbide of the wood and the loess. The sodium carbonate powder is mixed in an amount of 1 to 6 parts by weight, preferably 1 to 5 parts by weight, more preferably 1 to 4 parts by weight, based on 100 parts by weight of the total of the semi-carbides or carbides of the wood and the yellow loess. The sodium carbonate aqueous solution is mixed in an amount of 2 to 10 parts by weight, preferably 3 to 9 parts by weight, more preferably 4 to 8 parts by weight, based on 100 parts by weight of the semi-carbide or carbide of the wood and the whole yellow clay. When mixed below the above range, a sufficient calorific value and combustion time can not be obtained. If the amount is mixed in excess of the above range, molding into wood coal is not easy, cracking may occur during drying after molding, Is not significantly increased compared to the mixing amount.

In addition to the above-mentioned mixture, the wood shade of the present invention includes water for ease of molding. However, when the aqueous solution of sodium carbonate is included as the wood coal of (4), the aqueous solution may be substituted for water. Specifically, the amount of water used is 2 to 10 parts by weight, preferably 3 to 9 parts by weight, more preferably 3 to 8 parts by weight, based on 100 parts by weight of the total of the half-carbides or carbides of the wood and the yellowing Preferably 4 to 8 parts by weight.

The wood carbohydrate of the present invention is most excellent in the calorific value of the carbohydrate or carbide of the tree of 5,000-6,000 kcal / kg, and contains the shell of the shellfish or the sodium carbonate powder or an aqueous solution thereof mixed with the carbohydrate or carbide of the tree The increase of the heating value is improved by at least 20% as compared with the case without the case. Therefore, the wood coal according to the present invention has an excellent heat quantity as compared with the conventional wood pellets.

In addition, the wood coal of the present invention has an ignition time of 10 to 20 minutes, which is shortened by at least 10 minutes compared to conventional briquettes, and the burning time is 11 to 17 hours, which is increased by at least 4 hours, .

In addition, since the amount of noxious gas generated during burning in the wood burning according to the present invention is remarkably reduced compared to the case of briquetting combustion, it can be used safely compared with briquetting.

In addition, since the wood charcoal according to the present invention, particularly the wood charcoal according to (3) and (4), contains the shell of shellfish or sodium carbonate or an aqueous solution thereof, the remaining material after combustion is used as a soil modifier or fertilizer to alkalize the acidic soil This can be useful.

In another aspect, the present invention relates to a method for producing a plant extract, comprising the steps of: extracting residual waste of a tree selected from the group consisting of branches, leaves, stems, and roots of a tree, shellfish shell, sodium carbonate powder or an aqueous solution thereof, (S100) for preparing each of the following components (a) to (e), a cutting step (S200) for cutting the prepared waste of wood and the shell of shellfish into a predetermined size; A carbonization step (S300) of semi-carbonizing or carbonizing the residual waste of the cut tree; Crushing the semi-carbide or carbide (S400); Mixing the crushed semi-carbide or carbide with (a) water, (b) mixing with the prepared loess and water, (c) mixing with the shell of the cut shellfish, loess and water, (d) (E) mixing the prepared sodium carbonate aqueous solution with the loess (S500); (c) mixing the prepared sodium carbonate aqueous solution with the loess and water; A molding step S600 of pressing the mixture under high pressure and molding the mixture into wood charcoal having a predetermined size; And a drying step (S700) of drying the molded wood coal.

Hereinafter, a method for producing wood carbon according to the present invention will be described in detail with reference to FIG.

(1) preparation step (S100):

The preparation step (S100) is a step of preparing residual wastes of tree, shell of shellfish, sodium carbonate powder or an aqueous solution thereof, and loess as required.

Remaining wastes of the trees are left in the mountains after forest conservation or logging, and they are a cause of fire flooding due to heavy rain during summer. Therefore, we arrange the branches, leaves, roots, and stalks remaining in the mountains and fields in cooperation with the Forestry Agency, local governments, forestry business lawyers, and log production associations.

Collect shells of shellfish that are being discarded in fishing villages and restaurants in cooperation with fishing villages or waste collection companies.

The sodium carbonate aqueous solution is prepared by dissolving the sodium carbonate powder in water or by dissolving the shell of the prepared shellfish in water.

The loess is bought from the yellow soil collector and the foreign matter is removed and prepared.

(2) Cutting step (S200):

And cutting the remaining waste of the tree and the shell of the shellfish prepared in the preparation step (S100) to a predetermined size.

In the above-mentioned predetermined size, the remaining waste of the tree is a length and a width of 3 to 20 mm, preferably 3 to 10 mm. If the size is smaller than the predetermined size, there is a problem that carbonization is likely to occur in the following semi-carbonization step (S300). If the size is larger than the predetermined size, there is a problem that time and heat are required to be half- have.

Further, the predetermined size of the shell of the shell is 30 mm or less, preferably 1 to 30 mm, and more preferably 2 to 20 mm in length and width. When the shell is cut to a size exceeding 30 mm, there is a problem that the molding is incomplete in the following molding step (S600).

(3) Carbonization step (S300):

Carbonization, or carbonization of the remaining waste (branches, leaves, roots, stems, etc.) of the tree cut in the cutting step S200.

Specific examples of the semi-carbonization include placing the remaining waste (branches, leaves, roots, stems, etc.) of the cut tree into a container and rotating it at 300 ° C or lower, preferably 150-300 ° C, Min to 1 hour, preferably 30 minutes to 1 hour.

Specific examples of the carbonization include putting the remaining waste (branches, leaves, roots, stems, etc.) of the cut tree into a container and rotating it at 400 ° C or higher, preferably 400 to 600 ° C for 2 hours Or more, preferably 2 to 5 hours, and more preferably 2 to 4 hours.

Such semi-carbonization or carbonization can increase the calorific value of the remaining waste of the tree and reduce the heat loss in the combustion process.

(4) Grinding step (S400)

In the carbonization step (S300), semi-carbonized semi-carbide or carbonized carbide is finely pulverized into a fine powder form. The pulverization is carried out in such a manner that the particle size is 2 mm or less, preferably 0.1 to 2 mm, more preferably 0.1 to 1 mm. By this grinding, the other components, that is, And has a hardness.

(4) Mixing step (S500)

Mixing the semi-carbide or the carbide with itself or with the loess, or mixing a small amount of water with the shell of the cut shellfish and the loess at a constant weight ratio, or mixing the semi-carbide or the carbide with the aqueous solution of sodium carbonate and the loess at a constant weight ratio .

The mixing ratio is as follows.

First, when water (a) is mixed with a semi-carbide or a carbide, 2 to 10 parts by weight, preferably 3 to 9 parts by weight, more preferably 4 to 8 parts by weight, based on 100 parts by weight of the total of the half- Mix.

(b) When mixing a semi-carbide or a carbide with a loess and water, the half-carbide or carbide and loess are mixed in a weight ratio of 2 to 5: 1, preferably 3 to 5: 1, more preferably 4 to 5: By weight.

(c) When mixing the shell of semi-carbide or carbide with the shell of loam and crushed shellfish and water, the half-carbide or carbide and loess are mixed in a weight ratio of 1 to 5: 1, preferably 2 to 5: 1, Is mixed at a weight ratio of 2 to 4: 1, and the shell of the shellfish is mixed with 2 to 7 parts by weight, preferably 2 to 6 parts by weight, more preferably 3 to 5 parts by weight, based on 100 parts by weight of the whole of the half- 6 parts by weight.

(d) When the semi-carbide or the carbide is mixed with the yellow loess and the aqueous sodium carbonate solution and the water, the half-carbide or the carbide and the loess are mixed at a weight ratio of 1 to 5: 1, preferably 2 to 5: 1, 4: 1, and 1 to 6 parts by weight, preferably 1 to 5 parts by weight, and more preferably 1 to 4 parts by weight of sodium carbonate powder are mixed. In the case of an aqueous solution of sodium carbonate, 2 to 10 parts by weight, preferably 3 to 9 parts by weight, more preferably 4 to 8 parts by weight, based on 100 parts by weight of the total of the semi-carbide or carbide and the yellow clay are mixed.

If the mixing weight ratio is out of the above range, it is not possible to form the wood charcoal, or cracking of the wood charcoal may occur during the drying process, and a sufficient calorific value can not be obtained.

Particularly, in the present invention, the reason why the shell of crushed shellfish or the sodium carbonate powder or the aqueous solution thereof is mixed with the half-carbide or carbide is that the heat amount is increased and maintained when heat is applied to the shell made of calcareous material Because.

(5) Forming step (S600):

In the mixing step (S500), the mixed mixture is compressed at a high pressure using a high-pressure squeezer or a spinner, and then molded into a cylindrical wood coal having a predetermined size such as briquettes.

(6) Drying step (S700):

And drying the molded wood coal in the forming step S600.

The drying is carried out at a temperature of 70 DEG C or lower, preferably 60 DEG C or lower, for 3 to 10 minutes, preferably 4 to 8 minutes so that the moisture content is 5 to 15%, preferably 8 to 12%. This drying can also be done in a variety of ways, for example in a hot air dryer.

By the drying, the hardness and strength of the molded wood can be increased, and the loss of wood burden due to the breakage can be prevented.

As described above, the wood carbon produced according to the present invention has the following advantages.

First, the wood tan according to the present invention can utilize branches, leaves, roots, stems, and the like, which are remnants of trees that are left in the trees, that is, not the logs of coniferous trees and broad-leaved trees, and the shells of the shellfishes, It can be recycled and recycled as fuel.

Secondly, the wood carbon according to the present invention is the same cylindrical shape as the briquetting or the lightning burner and has the same diameter and is much lighter in weight, so that it can be easily used by consumers using the conventional briquetting apparatus but is not exposed to toxic gas, It is very practical to use wood directly as an alternative fuel for briquettes without any special structural changes.

Thirdly, the wood burden according to the present invention is superior to conventional wood pellets, wood chips and briquettes in calorific value, ignition time and combustion time.

In general, the wood chips sold on the market show a calorific value of 2,300 to 2,700 kg per kg, while the wood pellets have a calorific value of about 4,000 kcal per kg, and in the case of briquettes, about 4,400 to 4,600 kcal per kg, 1 kg of wood tan is about 3,000 to 6,000 kcal per kilogram, which is superior to these wood chips, wood pellets and briquettes.

Fourthly, wood shells containing shell shells or sodium carbonate aqueous solution as wood shells according to the present invention are left as charcoal, calcareous material, and loamy material after burning. Charcoal is burdensome to use as fertilizer in the conventional economic aspect The use of wood burning combustibles can provide excellent effects in terms of physical properties and improvement of the soil. Also, in the case of calcareous matter, the use of long-term fertilizer has an effect of alkalizing the acidified soil and raising the intelligence. Even in the case of loess, it has an excellent effect on improving the soil by cultivating beneficial microorganisms in the soil. Therefore, the wood coal according to the present invention can be used as a soil modifier or an environmentally friendly fertilizer.

Fifth, the wood carbon according to the present invention is not mixed with chemicals such as a binder and a burning agent during the manufacturing process, so no pollutants are burned due to combustion of chemical substances.

Therefore, the wood burning according to the present invention is recycled even after the final burning, so that it has a beneficial effect that is not harmful to the environment, and thus it is said to be fully equipped with the advantage as an environmentally friendly fuel.

Further, after the drying step (S700), in order to improve the ignition power of the wood carbon according to the present invention, a sawdust attaching step (S800) for attaching sawdust having a length and a thickness of 1 mm or less to at least one of the upper surface or the lower surface of the wood ) Can be selectively added.

According to the present invention, it is possible to provide wood-tan, which is an environment-friendly renewable energy that does not discharge pollutants, by recycling waste such as branches, leaves, roots and the like left in the mountain, which is a problem of the Forest Service, .

In addition, it is possible to use environmentally friendly fuels such as carbon monoxide generated from briquettes, which are conventional coal fuels, and to substitute them for existing briquet boilers and stoves immediately. It is also possible to use alternative fuels such as briquettes, wood pellets, Combustion time, and weight.

Finally, after burning, it can be recycled as fertilizer and used for improving the soil, which can greatly help farmers.

FIG. 1 is a view illustrating a manufacturing process of a wood bulb according to an embodiment of the present invention.
Fig. 2 is a photograph of a shape of a conventional wood pellet manufactured and sold.
FIG. 3 is a photograph of a woodball produced according to Production Example 1 of an embodiment of the present invention. FIG.
FIG. 4 is a photograph of a woodball produced according to Production Example 3 of an embodiment of the present invention. FIG.
FIG. 5 is a photograph of a woodball produced according to Production Example 5 of an embodiment of the present invention. FIG.
FIG. 6 is a photograph of a woodball produced according to Production Example 6 of an embodiment of the present invention. FIG.
FIG. 7 is a photograph of a state in which wood coal produced by mixing charcoal, loess, oyster shell, and water is completely burned according to an embodiment of the present invention.

Hereinafter, the present invention will be described in more detail with reference to Examples. It is to be understood by those skilled in the art that these embodiments are only for explaining the present invention in more detail and that the scope of the present invention is not limited by these embodiments in accordance with the gist of the present invention.

Production Example 1: Preparation of Wood Tan According to the Present Invention

Jeollanamdo Forestry Department, Suncheon City Hall Forest Department, Korea Forestry Corporation, and Hanyang Cooperation cooperate with each other to collect about 250 tons of residual wastes (branches, leaves, etc.) (Grinder name: Duraatec 3010T, USA) in a size of 5 mm.

The oyster shells were purchased from a fishing village in Geumbong - ri, Dolsan - eup, Yeosu - city, and 20kg bag was purchased from Haenam - gun, South Jeolla Province.

Residual waste of the above-mentioned crushed trees was put into a large cauldron at the Korea Forestry Plant of the Lee, Yang-Yang Industrial Park, Jeonnam-gun, Gyeongsangnam-do, and was heated to about 250 ~ 300 ℃ by a gas fire and covered with a lid. After that, it was stirred every 10 minutes and then it was semi-carbonized for 30 minutes for 3 times. The weight of the residual waste of the wood that was crushed after half-carbonization was reduced to about 1/3. Then, the oyster shells were put into a mortar with a size of about 3 to 20 mm. Yellow loam was prepared after supporting 10 kg of sieve.

The semi-carbide was put into a spinner (Lead ENG, Korea) and then crushed to a size of 1 mm or less.

1 kg of crushed semi-carbide, 0.65 Kg of crushed oyster shell, 1 kg of loess powder, and 200 ml of water were mixed and put into a rotary molding machine, molded at a high pressure of 200 tons and taken out. Then, it was dried in an oven at 60 DEG C for about 5 minutes to prepare wood charcoal.

Preparation Example 2:

A semi-carbide or the like was prepared in the same manner as in Preparation Example 1, and 1 kg of crushed 1-mm or less semi-carbide, 1.5 kg of loess, 0.3 kg of crushed oyster shell, and 200 mL of water were mixed, After the squeezing, wood charcoal was prepared.

Preparation Example 3:

The residual wastes of the wood pulverized in Production Example 1 were completely carbonized rather than semi-carbonized and made into charcoal, put into a spinner (Leadenge, Korea) and then pulverized to a size of 1 mm or less. 2.5 Kg of the pulverized charcoal powder and 200 ml of water were mixed, and the mixture was put into a rotary press mold, compression-molded at a high pressure of 200 tons, and then dried in an oven at 60 ° C for 5 minutes to prepare wood charcoal.

Preparation Example 4:

Wood coal was prepared in the same manner as in Preparation Example 3, except that 1.5 kg of loess and 200 ml of water were mixed into 1 kg of the crushed 1 mm or less charcoal powder prepared in Production Example 3 above.

Preparation Example 5:

A wood charcoal was prepared in the same manner as in Preparation Example 3, except that 1.5 kg of ground charcoal powder of 1 mm or less prepared in Preparation Example 3 was mixed with 1.5 kg of loess and 200 ml of water.

Preparation Example 6:

A wood charcoal was prepared in the same manner as in Preparation Example 3, except that 2 kg of loess and 200 ml of water were mixed into 1 kg of the crushed 1-mm or less charcoal powder prepared in Preparation Example 3. [

Preparation Example 7:

In the same manner as in Preparation Example 1, the halftone and the like were prepared, and 1 kg of the crushed 1-mm or less semi-carbide, 1.5 kg of the loess and 200 ml of water were mixed and pressed into a rotary press mold at a high pressure of 200 tons, Respectively.

Comparative Example 1:

2 kg of sawdust 3 to 5 mm in size and 200 g of wallpaper paste were mixed, pressed in a press mold of 200 tons and then dried in an oven at 60 ° C. for 5 minutes to prepare wood shot.

Comparative Example 2:

2 kg of powdered sawdust pulverized to 1 mm or less and 200 g of wallpaper pulp were mixed and pressed into a rotary press mold at a high pressure of 200 tons and then dried in an oven at 60 ° C for 5 minutes to prepare wood coal.

Comparative Example 3:

1Kg of 3 ~ 5mm size sawdust, 1Kg of pulverized sawdust and 200g of wallpaper paste were mixed, and pressed into a rotary press mold at a high pressure of 200 tons, followed by drying in an oven at 60 ° C for 5 minutes, Lt; / RTI >

Comparative Example 4:

1 kg of pulverized sawdust pulverized to 1 mm or less, 1 kg of loess powder, and 200 ml of water were mixed and pressed into a rotary press mold at a high pressure of 200 tons, followed by drying in an oven at 60 ° C for 5 minutes.

Comparative Example 5:

1 kg of pulverized sawdust pulverized to 1 mm or less, 1 kg of loess powder, 200 g of starch powder and 200 ml of water were mixed and pressed into a rotary press mold at a high pressure of 200 tons, followed by drying in an oven at 60 ° C for 5 minutes, .

Comparative Example 6:

2.5Kg of charcoal powder having a size of 10 mm or less and 200ml of water were mixed and pressed into a rotary press mold at a high pressure of 200 tons and then dried in an oven at 60 ° C for 5 minutes to prepare wood charcoal.

Comparative Example 7:

1 kg of charcoal powder having a size of 10 mm or less, 1.5 kg of loess powder, and 200 ml of water were mixed and pressed into a rotary press mold at a high pressure of 200 tons, followed by drying in an oven at 60 ° C. for 5 minutes.

Comparative Example 8:

The semi-carbide of Preparation Example 1 was mixed with 1 kg of semi-carbide, 10 kg or less, 1.5 kg of loess powder, and 200 ml of water. The resulting mixture was pressed into a rotary press mold at a high pressure of 200 tons, And dried for 5 minutes to prepare wood charcoal.

Example 1: Investigation of moldability of wood

Table 2 shows the results of confirming the appearance of the wood tan prepared according to the above Preparation Examples and Comparative Examples and the possibility of molding into wood charcoal.

sample Weight (Kg) Molding completion Remarks Production Example 1 2.65 ○ Moldable Production Example 2 2.8 ○ Moldable Production Example 3 2.5 ○ Moldable Production Example 4 2.5 ○ Moldable Production Example 5 3 ○ Moldable Production Example 6 3 ○ Moldable Production Example 7 2.5 ○ Moldable Comparative Example 1 2.2 ○ Swelling and cracking after drying Comparative Example 2 2.2 ○ Swelling and cracking after drying Comparative Example 3 2.2 ○ Swelling and cracking after drying Comparative Example 4 2.0 × Can not be formed Comparative Example 5 2.2 × Can not be formed Comparative Example 6 2.5 × Can not be formed Comparative Example 7 2.5 × Can not be formed Comparative Example 8 2.5 × Can not be formed

As can be seen from Table 2 above, the mixture of sawdust and wallpaper paste can be formed but swelling and cracking occurred in the drying process (see Comparative Examples 1 to 3). This is thought to be due to the volume expansion of sawdust after its production. Further, even when yellow loess or starch powder was added to sawdust, it was found that molding of the mixture was impossible (see Comparative Examples 4 and 5). Also, a mixture of a half-carbide of 10 mm or less and a charcoal of 10 mm or less was also impossible to be molded due to the size of particles or the like (see Comparative Examples 6 to 8).

Therefore, after half-carbide and carbide (crushed), which have been pulverized to 2 mm or less, preferably 1 mm or less, are mixed with ocher flour and / or crushed oyster shell powder to form a uniform shape, And it was confirmed that it is possible to produce wood chips without change and cracks.

Example 2: Mixing Ratio and Optimization of Wood Carbon According to the Present Invention

In preparing the wood charcoal according to the present invention, a wood charcoal was produced at a mixing ratio shown in Table 3 below in order to produce a wood charcoal capable of securing a sufficient calorific value, and the calorific value and components thereof were analyzed. The above calorific value and composition analysis were carried out by the Korea Kwanghae Corporation, and the results are shown in Table 4 below.

On the other hand, the oyster shell powder was completely dissolved in water and allowed to stand for a certain time. After the undissolved oyster shells were all settled, only the supernatant was collected and used.

number charcoal
(g) ocher
(g) water
(g) Oyster shell powder
(g) Soda powder
(g) Oyster shell powder
(g) A 1750 350 350 - - - B 1275 1275 350 - - - C 1110 1110 350 80 - - D 1367 683 350 - - - E 1536 384 350 - 30 - F 1275 1275 - - - 350 G 1367 683 - - - 350

number Weight before burning
(kg) Weight after combustion
(kg) moisture
(%) Ash
(%) Volatile matter
(%) fixing
carbon
(%) Calorific value
(kcal / kg) I'm
brimstone
(%) A 2.45 2.20 7.40 22.13 5.49 72.38 5,830 0.03 B 2.90 2.65 4.76 54.59 6.63 38.78 3,130 0.02 C 2.65 2.40 5.48 45.11 6.70 48.19 3,870 0.03 D 2.40 2.15 5.94 38.36 5.91 55.73 4,480 0.02 E 2.30 2.10 8.04 24.23 6.37 69.40 5,580 0.03 F 2.90 2.65 5.26 53.03 6.51 40.46 3,270 0.02 G 2.40 2.15 6.03 39.32 6.26 54.42 4,400 0.03

As can be seen from Tables 3 and 4, as the weight ratio of char and loess increased from 1: 1 to 5: 1, the calorific value increased, and oyster shell powder, soda powder, and oyster shell powder The increase in calorific value was shown as compared with the case where these components were not included.

Example 3: Investigation of ignition and combustion time of wood coal according to the present invention

The ignition time and the burning time of the wood carbon produced by the contents of Table 3 were measured and the results are shown in Table 5 below. In this experiment, the air inlet of the furnace was opened 50% in the general briquetting furnace (two top and bottom insertion) furnace, and the furnace was tested without any objects (eg kettle, etc.) on the top of the furnace. This experiment was repeated 3 times. As a control, it was the No. 2 briquette used for home use.

number Ignition time
(minute) Burning time (minutes) Haatan Roasting Average Control 30 6 78 7 A 10 11 14 12.5 B 18 13 17 15 C 18 13 17 15 D 15 12 16 14 E 12 11 14 12.5 F 18 13 17 15 G 15 12 16 14

As shown in Table 5, it can be seen that the wood coal according to the present invention is superior to the briquetting in terms of ignition time and burning time. The higher the content of char, the shorter the ignition time. However, And the tendency was increased as the content was decreased. Furthermore, during the above-mentioned experiment on wood coal according to the present invention, it was not possible to take the unpleasant odor as in briquette.

Example 4: Semi-carbonized furnace According to the present invention, Wood tan Investigation of calorific value, ignition time and combustion time

As a result of measuring the amount of heating, the ignition time and the burning time by substituting the same amount of the semi-carbonization of the preparation example 1 in place of the char, the increase in calorific value was 2 to 3% And the ignition time was increased by about 1 ~ 2 seconds, but it was confirmed that there was no significant difference in combustion time.

Therefore, the wood coal according to the present invention is excellent in ignition time, combustion time, and heating value, and can sufficiently replace the old fuel such as briquettes or wood pellets.

Claims

(1) Half-carbides or carbides of wood, crushed to a size of 2 mm or less; (2) a mixture of semi-carbides or carbides and yellow loam of wood, crushed to a size of 2 mm or less; (3) a mixture of shellfish shells and shells of semi-carbohydrates or carbides of wood pulverized to a size of 2 mm or less and loess; And (4) a wood carbide or a carbide of wood which is pulverized to a size of 2 mm or less and a sodium carbonate powder or an aqueous solution thereof and a mixture of loess.

The wood burden according to claim 1, wherein the shellfish is at least one selected from the group consisting of oysters, mussels, arcs, eardrums, clams, clams, abalones, and shells.

[3] The wood burden according to claim 1, wherein the shell angle of the shellfish is finely crushed to a size of 30 mm or less.

[3] The method of claim 1, wherein the mixture of semi-carbides or carbides and ocher of the wood pulverized to a size of 2 mm or less is mixed with the half-carbide or carbide of the wood and the loess at a weight ratio of 2: 5: 1 Wood carving.

[3] The method of claim 1, wherein the mixture of the shell and the shell of the crushed shell and the half shell or crushed shell of the tree crushed to a size of 2 mm or less is mixed with the half carbohydrate or the carbide of the tree and the loess at a weight ratio of 1 to 5: And the shell of shellfish is mixed in 2 to 7 parts by weight based on 100 parts by weight of the total of the half carbohydrate or carbide of the tree and the yellow loess.

The method according to claim 1, wherein the mixture of the semi-carbide or carbide and the sodium carbonate powder or the aqueous solution thereof and the loess of the wood pulverized to a size of 2 mm or less is the mixture of the semi-carbide or the carbide of the wood and the loess at a weight ratio of 1 to 5: And the sodium carbonate powder is mixed with 1 to 6 parts by weight of the semi-carbides or carbides of the tree and 100 parts by weight of the total 100 parts by weight of the loess or the sodium carbonate solution is mixed with 2 to 10 parts by weight of the half- By weight.

The mixture according to claim 1, wherein the mixture except for the mixture containing the sodium carbonate aqueous solution (4) further comprises 2 to 10 parts by weight of water based on 100 parts by weight of the total of the semi-carbides or carbides of the wood and the yellow loess Wood tan.

The wood burning coal according to claim 1, wherein the wood coal has an ignition time of 10 to 20 minutes and a burn time of 11 to 17 hours.

(A) to (e) of the following items are selected from the group consisting of residual wastes of trees selected from the group consisting of branches, leaves, stems and roots of trees, shells of shellfishes, sodium carbonate powder or an aqueous solution thereof, (S200) of cutting the remaining waste of the prepared tree and the shell of the shell into a predetermined size; A carbonization step (S300) of semi-carbonizing or carbonizing the residual waste of the cut tree; Crushing the semi-carbide or carbide (S400); Mixing the crushed semi-carbide or carbide with (a) water, (b) mixing with the prepared loess and water, (c) mixing with the shell of the cut shellfish, loess and water, (d) (E) mixing the prepared sodium carbonate aqueous solution with the loess (S500); (c) mixing the prepared sodium carbonate aqueous solution with the loess and water; A molding step S600 of pressing the mixture under high pressure and molding the mixture into wood charcoal having a predetermined size; And drying the molded wood coal (S700).