KR101980364B1 - Process for producing pellets using coffee sludge - Google Patents

Abstract

The present invention relates to a method for producing pellets using coffee sludge in which the generation of carbon monoxide is reduced using a dried coffee sludge and a mildew mucus, and the shape is maintained even after combustion, 50 to 80 parts by weight of coffee sludge, 10 to 30 parts by weight of sawdust or natural by-product, 10 to 30 parts by weight of crop slurry with starch, and 10 to 20 parts by weight of soil or anthracite coal.
The briquettes (pellets) using the coffee sludge according to the present invention can reduce the generation of carbon monoxide, lighten the weight, and enable the production of solid carbon whose shape is maintained even after combustion, and the briquetting material after burning is used as a glaze of ceramics .

Description

Technical Field [0001] The present invention relates to a process for producing pellets using coffee sludge,

More particularly, the present invention relates to a method for producing pellets using coffee sludge, and more particularly, to a method for producing pellets using coffee sludge, in which the production of carbon monoxide is reduced using a dried coffee sludge, a crop slime with starch and sawdust The present invention relates to a method for producing pellets using coffee sludge.

Solid carbons, especially briquettes, are cylindrical solid fuels that are formed and dried by mixing and mixing other carbides such as coke and charcoal powder with anthracite as the main raw material, and are also referred to as holes or holes.

Biodiversity consumption has steadily decreased since 1986 due to the improvement of living standards and the supply of city gas, but it has been rising again since the 2000s due to rising oil prices.

In the case of domestic anthracite coal, raw materials are difficult to be mined due to depletion of resources. Currently, they are being produced in Jangseong, Hwasun, and Chae mine, but their quality is gradually deteriorating. In case of imported anthracite coal, it is impossible to mix more than a certain ratio in the process of mixing with domestic coal because of high oil content. In case of North Korea anthracite coal imported from China, imports are limited even though it is high quality. I have been sending it, but I have not been able to present a realistic alternative.

In particular, coal will be depleted within the next 50 years, and development of alternative fuels is urgent.

According to Korean Industrial Standards (KS E 3731 drill hole, KS E 3732 drill hole test method, KS E 3707 method of measuring calorific value of coal), the calorific value of briquettes should be 4,600 kcal or more, Should be molded so that the dry weight is 4.1 kg or more.

The briquettes are laborious and require a lot of transportation costs because they are heavy, and when a person directly moves in a place where entry of a vehicle is difficult, such as an alleyway, labor intensity is required to be twice that of a vehicle.

In addition, when manufacturing briquettes, they may be exposed to coal dusts, resulting in health problems such as pneumoconiosis, and the use of finished briquettes may result in fine dust.

The ignition burning time of the briquettes is about 30 minutes, and when it is exposed to the atmosphere, it takes about 8 hours to burn completely. The toxic gas generated when briquettes get rusted has a specific gravity of 0.6, which is lighter than air and spreads quickly. Especially, it is composed of carbon monoxide. If it is more than 0.05% in air, there is a problem of carbon monoxide poisoning, which leads to personal injury. In Korea, which is heating up the floor, there is a lot of floor cracks, so it is very serious because it is addicted to briquette gas.

On the other hand, as the domestic coffee market expands every year, the amount of coffee sludge is rapidly increasing, and more than 110,000 tons of coffee sludge is generated annually, resulting in over 2.3 billion won of annual packaging costs for general waste.

Accordingly, the inventors of the present invention discovered that when burning coffee sludge as a raw material, the burning efficiency is excellent while developing a ceramic syringe using the sludge that has been dumped, and found that, in order to utilize the sludge as a glaze, It is possible to recycle fuel more efficiently by collecting the fuel ash after using the fuel using the fuel.

Meanwhile, various solid fuels utilizing waste resources are being developed in Korea.

For example, Korean Patent Laid-Open Publication No. 10-2015-0019243 discloses a method for producing pellets using waste containing coffee beans, and a method for producing high-density pellets in which the fecal strength is improved by mixing animal feces with coffee liquor and then supplementing lignin. .

As another example, Korean Patent Laid-Open No. 10-2009-0085382 discloses a solid fuel composition using coffee by-products, which comprises at least 80% by weight of coffee by-products, 1 to 5% by weight of barium, 1 to 3% by weight of corundum, 0.1 to 1% by weight of ethyl cellulose, and 5 to 10% by weight of sugar.

However, in the above documents, there is no disclosure of lightening, short combustion time, difficulty in recovering and collecting since the initial shape can not be maintained due to ash after combustion, so that it can not be used as briquettes and is limited to ignition coals burning for a short time There are disadvantages.

SUMMARY OF THE INVENTION An object of the present invention is to solve the problems of the conventional solid carbon as described above, and it is an object of the present invention to provide a method for producing carbon monoxide by using dried coffee sludge, a crop mucilage with starch and sawdust And a method for manufacturing pellets using the coffee sludge according to the present invention in which the shape is maintained even after combustion.

In order to achieve the object of the present invention, the solid carbon composition using the coffee sludge according to the present invention comprises 50 to 80 parts by weight of completely dried coffee sludge, 10 to 30 parts by weight of sawdust or natural by- 10 to 30 parts by weight of a crop slurry having starch, and 10 to 20 parts by weight of soil.

The solid carbon composition using the coffee sludge according to the present invention comprises 50 to 80 parts by weight of completely dried coffee sludge, 10 to 30 parts by weight of sawdust or natural by-products, 10 to 30 parts by weight of starch-containing crop slurry, And 10 to 20 parts by weight of anthracite coal.

In addition, the crop with the starch is characterized in that it is any one of lotus root, potato, sweet potato, wheat flour and rice grain.

In addition, the natural by-products are characterized by being dried leaves, stones, waste paper, agricultural by-products.

Further, the briquettes using the coffee sludge according to the present invention are characterized by being produced from the solid carbon composition.

In addition, the method for producing briquettes using coffee sludge according to the present invention comprises a step (S1) of kneading a material for mixing and kneading the solid carbon composition into a kneader;

The solid carbon composition using the coffee sludge according to the present invention comprises: (S2) molding the briquettes by the dough;

(S3) for drying the briquettes at 35 to 45 DEG C for 15 to 36 hours;

And a control unit.

In addition, the complex composition containing 50 to 80 parts by weight of completely dried coffee sludge, 10 to 30 parts by weight of sawdust or natural by-products, 10 parts by weight of starch-containing crop slurry 10 To 30 parts by weight.

As described above, according to the present invention, by providing a solid carbon composition using dried coffee sludge, starch-containing crop mucus and sawdust (or natural by-products), the generation of carbon monoxide is reduced, the weight is reduced, Enabling pellet manufacturing.

Further, the briquetting material after the use of the briquettes according to the present invention is completed can be utilized as a glaze of ceramics.

1 is a photograph of a solid carbon composition using coffee sludge according to the present invention.
2 is a photograph showing briquettes using coffee sludge according to Example 1 of the present invention.
3 is a photograph showing the ignition of briquettes using the coffee sludge according to the first embodiment of the present invention.
4 is a photograph showing the shape of a briquetting material burnt with briquettes using the coffee sludge according to the first embodiment of the present invention.
5 is a photograph showing briquettes using coffee sludge according to Example 2 of the present invention.
6 is a photograph showing the combustion state of briquettes using the coffee sludge according to the second embodiment of the present invention.
7 is a flowchart showing a method for producing briquettes using coffee sludge according to the present invention.
8 is a photograph showing a state in which a solid carbon composition using coffee sludge according to the present invention is extruded after being kneaded in a sowing machine.
9 is a photograph showing a state in which the briquettes using the coffee sludge according to the present invention are molded by using an extruder.

The present invention is described in detail on the basis of an exemplary embodiment according to the present invention. In the following description of the present invention, reference will be made to the accompanying drawings. The configurations and operations described in detail herein are not intended to be limiting and are set forth for the purpose of teaching the ordinary skill in the art to which the present invention pertains for various embodiments of the invention.

Hereinafter, embodiments of the solid carbon composition using the coffee sludge according to the present invention will be described in detail with reference to the accompanying drawings.

≪ Example 1 >

The solid carbon composition using the coffee sludge according to the present invention comprises 50 to 80 parts by weight of completely dried coffee sludge, 10 to 30 parts by weight of sawdust or natural by-products, 10 to 30 parts by weight of starch-containing crop slurry, And 10 to 20 parts by weight of soil.

Preferably, the coffee sludge is placed in a dryer and completely dried at 80 DEG C for 12 hours.

The crop with the starch is selected from Lotus root, potato, sweet potato, wheat flour and rice grain.

The natural by-products are selected from dried leaves, drains, waste paper, and agricultural by-products.

According to an embodiment of the present invention, a lotus mucus is used as a crop mucus having starch, and the lotus mucus is preferably made into a mucilage state by mixing the lotus root and water in the same weight portion and then boiling at 100 ° C for 1 hour, Mushrooms obtained by the same method using a plant having starch such as potatoes, sweet potatoes, flour, rice balls and the like can be used instead of the lotus root.

FIG. 1 is a photograph of a solid carbon composition using coffee sludge according to an embodiment of the present invention. The solid carbon composition using the coffee sludge according to the present invention may be kneaded to produce various types of solid carbon.

FIG. 2 is a photograph showing briquettes using the coffee sludge according to the first embodiment of the present invention. The briquette can be molded and used in the same manner as conventional briquettes.

The weight of the conventional briquetting compact is 3.3 kg after drying but the weight of the briquetting compact according to the first embodiment of the present invention is 1 kg after drying and is about 70% Weight reduction can be achieved.

FIG. 3 is a photograph showing the ignition of briquettes using the coffee sludge according to the present invention, and it can be visually confirmed that the thermal power is excellent.

4 is a photograph showing the shape of a briquetting material burnt with briquettes using the coffee sludge according to the first embodiment of the present invention.

As described above, when molded into the same shape as conventional briquettes, the weight of the conventional briquetting compact is 3.3 kg after drying and 1.3 kg after burning. However, the weight of the briquetted compact according to Example 1 of the present invention is 1 kg , 800g after combustion, which can lead to a weight reduction of about 40% compared to the weight after combustion of existing briquettes.

Referring to FIG. 4, the briquettes using the coffee sludge according to the present invention maintains the initial shape after the burning is completed.

When the content of the coffee sludge is more than 80 parts by weight based on 100 parts by weight of the solid carbon composition, it is possible to generate a large amount of smoke when burning solid carbon. When the content of the coffee sludge is less than 50 parts by weight, May be lowered.

The sawdust serves to increase the flame and the calorific value in the case of solid carbon burning.

When the amount of the sawdust is more than 30 parts by weight based on 100 parts by weight of the solid carbon composition, the solid carbon is burnt in a short time and can not be suitable for long-time heating. If the amount is less than 10 parts by weight, It can occur a lot.

The lotus mucus acts as a docket for binding other compositions.

If the content of the lotus root mucilage is more than 30 parts by weight based on 100 parts by weight of the solid carbon composition, the physical properties may be disadvantageous to make it difficult to form the solid carbon into the solid carbon composition, or the solid carbon composition may have a long drying time , And when it is less than 10 parts by weight, it becomes difficult to form a solid during the production of solid carbon, which makes shape molding difficult.

Potatoes, sweet potatoes, wheat flour, rice bran mucilage and the like other than the lotus root can also be added in the same parts by weight as the lotus mucus.

Since the soil is dry soil or clay, it is preferable to use clay soil because it enhances heat generation efficiency when burning solid coal and keeps the original shape even after the solid carbon is burned and used.

When the amount of the soil is more than 20 parts by weight based on 100 parts by weight of the solid carbon composition, the initial ignition time becomes long and the solid carbon becomes heavy when the solid carbon is burned. When the content is less than 10 parts by weight, The original shape may not be maintained and may be broken, and collection and collection after use may be difficult.

≪ Example 2 >

The solid carbon composition using the coffee sludge according to the present invention comprises 50 to 80 parts by weight of completely dried coffee sludge, 10 to 30 parts by weight of sawdust or natural by-products, 10 to 30 parts by weight of starch-containing crop slurry, And 10 to 20 parts by weight of anthracite.

FIG. 5 is a photograph showing briquettes using the coffee sludge according to the second embodiment of the present invention, FIG. 6 is a photograph showing the combustion state of the briquettes using the coffee sludge according to the second embodiment of the present invention, It can be applied to existing briquette fireplaces or boilers.

The anthracite coal is used to increase the heat generation efficiency during solid carbon combustion, and plays an analogous role to the soil in the first embodiment.

When the amount of the anthracite coal is more than 20 parts by weight based on 100 parts by weight of the solid carbon composition, the weight of the solid carbon finally increases. When the amount of the anthracite is less than 10 parts by weight, It may become difficult to collect and recover the used briquettes.

On the other hand, the description of the constitution other than the anthracite coal in the solid carbon composition refers to the description described in the above-mentioned first embodiment.

The weight of the conventional briquetting molded article is 3.3 kg before drying, but the weight of the briquetted molded article according to the second embodiment of the present invention is 2.48 kg before drying, which is about 25% Can lead to a reduction in weight.

In addition, when molded into the same shape as conventional briquettes, the weight of the conventional briquetted molded article was 3.3 kg after drying and 1.3 kg after burning, but the weight of the briquetted molded article according to Example 2 of the present invention was 1.8 kg after drying, After 1 kg, it can lead to a reduction in weight after burning of about 23% compared to the weight after combustion of existing briquettes.

The briquettes using the coffee sludge according to the present invention can be manufactured to the same size as the conventional briquettes and can be applied to existing briquette fireplaces and boilers, and retain their initial shape even after they are burned and used.

≪ Example 3 >

Meanwhile, another embodiment of the present invention discloses a composition for producing various complexed carbons such as briquettes and pellets in addition to the above-described solid carbon composition and briquetting using the same.

According to another embodiment of the present invention, 50 to 80 parts by weight of completely dried coffee sludge, 10 to 30 parts by weight of sawdust or natural by-product, and 10 to 30 parts by weight of starch-containing crop slurry, .

Thus, lightweight complexed coals can be provided by including only coffee sludge, sawdust (or natural by-products), and crop mucilage with starch.

A method of manufacturing a pellet using the solid carbon composition for producing pellets, which is a temporal example according to the provision of lightweight ignition coals, comprises the steps of: 50 to 70 wt% of completely dried coffee sludge; 10 to 30 wt.% Of sawdust or plant by- And 10 to 30 wt% of mucilage and 10 to 20 wt% of soil. The crop slurry containing the starch is prepared by adding water to a crop with starch and heating the solid carbon composition using the coffee sludge, A material kneading step (S1) for mixing and kneading the mixture into a kneader; Molding the pellet with the dough (S2); And drying the pellets at 35 to 45 DEG C for 15 to 36 hours (S3).

Hereinafter, a method for producing briquettes (pellets) using the coffee sludge according to the present invention will be described in detail with reference to the drawings.

7 is a flowchart showing a method for producing briquettes (pellets) using the coffee sludge according to the present invention.

1. Material dough step (S1)

In the material dough step S1, the solid carbon composition using the coffee sludge according to the present invention is put into a sowing machine and mixed and kneaded.

8 is a photograph showing a state in which a solid carbon composition using coffee sludge according to the present invention is extruded after being kneaded in a sowing machine.

Referring to FIG. 8, the solid carbon composition using the coffee sludge according to the present invention can be manufactured in the same manner as a conventional briquetting (pellet) standard, because it is easy to dough and can be made into solid carbon having various shapes.

2. Briquette (pellet) molding step (S2)

The briquetting (pellet) molding step S2 is a step of molding the briquettes (pellets) with the extruded dough.

9 is a photograph showing briquettes using coffee sludge according to various embodiments of the present invention.

That is, in other embodiments, various materials including the solid carbon composition can be added, and solid carbides having various shapes can be produced.

3. Briquette (pellet) drying step (S3)

The briquetting (pellet) drying step (S3) is a step of drying the molded briquettes (pellets) at 35 to 45 DEG C for 15 to 36 hours.

The briquettes produced from the solid carbon composition using the coffee sludge according to the present invention are shown in Fig.

If the temperature of drying the briquettes (pellets) in the briquetting (pellet) drying step (S3) exceeds 45 ° C or the drying time exceeds 36 hours, cracking of the form may occur, When the temperature is lower than 35 ° C or when the drying time is less than 15 hours, the residual moisture in the briquettes (pellets) may cause a large amount of smoke and the thermal power of briquettes (pellets) may be weakened.

The solid carbon composition using the coffee sludge according to the present invention and the The briquettes are lighter than the conventional briquettes and easily conveyed and conveyed, and can be applied to conventional briquette fireplaces and furnaces in the form of cylinders. The burning time is 7 to 9 hours , Which is similar to conventional briquettes. The calorific value of coffee is 6,300 kcal and the calorific value of coal is higher than 4,500 kcal. Since coffee sludge is used without coal charring and grinding process, it can shorten processing time and labor, Therefore, the problem of pneumoconiosis does not occur, and the generation of carbon monoxide during combustion can be reduced, thereby reducing the problem of briquette poisoning.

In addition, most municipalities are collecting free of charge waste without consideration of the level of briquette using the briquette. The solid carbon composition using the coffee sludge according to the present invention and the briquetting using the same, Therefore, it is easy to collect and recover, and there is no harmful substance such as arsenic remaining in conventional briquettes, which is harmless to the human body. Therefore, it can be recycled in various ways such as manure of crops and glaze of pottery. It is also suitable as an alternative fuel for the coal in question.

Although the embodiment of the present invention has been described, this embodiment is presented as an example and is not intended to limit the scope of the invention. The present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The foregoing embodiments and modifications thereof are included in the scope and spirit of the invention and are included in the scope of equivalents of the invention described in the claims.

Claims (1)

Wherein the starch-containing crop slurry comprises 50 to 70% by weight of completely dried coffee sludge, 10 to 30% by weight of sawdust or plant by-products, 10 to 30% by weight of crop slurry with starch, 10 to 20% (S1) of mixing and kneading a solid carbon composition using a coffee sludge which has been made into a mucilage state by heating water by adding water to a crop having a starch, and adding the solid carbon composition to a sowing machine;
Molding the pellet with the dough (S2);
And drying the pellets at 35 to 45 DEG C for 15 to 36 hours. The method for manufacturing pellets using the coffee sludge according to claim 1,

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