KR20220080320A - Formular and production method of eco friendly soild fuel with coffee by-product - Google Patents

Abstract

The present application relates to an eco-friendly solid fuel including coffee by-products and a method for manufacturing the same, and more particularly, to an eco-friendly solid fuel capable of maximally extracting calories from coffee beans, etc. using coffee beans, and a method for manufacturing the same will be.

Description

Eco-friendly solid fuel including coffee by-products and manufacturing method thereof

The present application relates to an eco-friendly solid fuel including coffee by-products and a method for manufacturing the same, and more particularly, to an eco-friendly solid fuel capable of maximally extracting calories from coffee beans, etc. using coffee beans, and a method for manufacturing the same will be.

In general, coffee is a favorite food of people around the world, and almost all of it is imported in Korea, and its consumption is continuously increasing due to its subtle flavor and caffeine addiction.

Currently, the cost of domestic coffee imports is enormous. In addition, coffee beans that are imported and sold at a relatively high price are discarded as they are after being used once. In particular, the only thing that can be recognized as recycling after use of coffee beans is that a small amount of coffee by-products (coffee sludge, coffee grounds, coffee waste, coffee extraction residues) are used in an ashtray, and they are thrown away even after using the ashtray. Getting lost is a common use case.

Accordingly, attempts are being made to use discarded coffee by-products as raw materials for new fuels that can replace forest biomass such as wood. Specifically, coffee by-products have a high calorific value of about 6,560 kcal/kg, which is superior to wood with around 4,000 kcal/kg, ash content of 1.75%, which has similar energy characteristics to wood, and lignin acts as an adhesive when forming pellets. Also contains a certain amount of wood pellets, it is attracting attention as a new energy resource that can replace the existing wood pellets.

However, conventional fuel pellets using coffee by-products generally have relatively poor durability, and in particular, the low calorific value does not reach the level required as fuel pellets, and there are problems in that the formulation is not well formed due to lack of formability. .

Accordingly, as pellets for fuel using coffee by-products, it has excellent properties such as calorific value, moisture content, density and durability. Various attempts were made to develop new products without defects.

However, such an attempt is also, when the coffee by-products are manufactured into pellets at a high temperature and high pressure, the density of the pellets becomes too high, so that complete combustion is difficult or carbon monoxide generation through incomplete combustion becomes a problem.

So, it is time to study how to fundamentally prevent the generation of carbon monoxide and use the calories inherent in coffee by-products to the maximum.

According to an embodiment of the present application, an environment-friendly solid fuel including coffee by-products capable of providing complete combustion by providing a passage through which air can pass during combustion, and a method for manufacturing the same are provided.

One aspect of the present application relates to a method for producing an eco-friendly solid fuel including coffee by-products.

In one example, the manufacturing method comprises the steps of preparing a coffee by-product; A pretreatment step of coffee by-products of mixing an organic compound with the prepared coffee by-products;

A first mixing step of mixing a liquid organic binder with the pre-treated coffee by-product to form a first mixture; a second mixing step of mixing the thermoplastic resin of the hollow spheroid type with the first mixture to form a second mixture; a third mixing step of mixing a solid peroxide with the second mixture to form a third mixture; and a coffee by-product comprising a molding step of molding the third mixture in a predetermined temperature range and a predetermined pressure range.

In one example, the manufacturing method comprises the steps of preparing a coffee by-product; A pretreatment step of coffee by-products of mixing 200 to 400 parts by weight of an organic compound based on 100 parts by weight of the prepared coffee by-product; A first mixing step of mixing 1 to 20 parts by weight of a liquid organic binder with respect to 100 parts by weight of the pre-treated coffee by-product to form a first mixture; A second mixing step of mixing 1 to 50 parts by weight of a hollow spheroid type thermoplastic resin with respect to 100 parts by weight of coffee by-products in the first mixture to form a second mixture; A third mixing step of mixing 1 to 30 parts by weight of a solid peroxide based on 100 parts by weight of coffee by-products in the second mixture to form a third mixture; and a coffee by-product comprising a molding step of molding the third mixture in a predetermined pressure range.

In one example, the pretreatment step of the coffee by-product may be a step of removing a fat component and/or a caffeine component of the coffee by-product.

In one example, the organic compound may include at least one selected from the group consisting of acetone, isopropyl alcohol, propyl alcohol, normal propanol, propanol, and ethanol.

In one example, the organic binder may include at least one selected from the group consisting of cetylated polyols, silanols, and polyfunctional polyols.

In one example, the average diameter of the hollow globules may be 0.1 mm to 5 mm.

In one example, the solid organic/inorganic peroxide is urea hydrogen peroxide, sodium peroxide, potassium peroxide, sodium percarbonate, potassium percarbonate percarbonate) and hydrogen peroxide (hydrogen peroxide) may include at least one selected from the group consisting of.

In one example, at least one of the first mixing step, the second mixing step, and the third mixing step may include stirring at room temperature.

Another aspect of the present application relates to an eco-friendly solid fuel including coffee by-products.

In one example, the solid fuel may include a coffee by-product, an organic binder, a hollow microsphere type thermoplastic resin, and a solid peroxide.

In one example, it may include 100 parts by weight of coffee by-products, 1 to 20 parts by weight of an organic binder, 1 to 50 parts by weight of a hollow spheroid type thermoplastic resin, and 1 to 30 parts by weight of a solid peroxide.

According to an embodiment of the present application, it is possible to provide an eco-friendly solid fuel.

According to an embodiment of the present application, it is possible to provide an eco-friendly solid fuel using coffee by-products.

According to an embodiment of the present application, it is possible to provide an eco-friendly solid fuel capable of minimizing the generation of carbon monoxide during combustion.

According to an embodiment of the present application, it is possible to provide a solid fuel having an excellent amount of heat generated during combustion.

1 is a flowchart for explaining a method of manufacturing an eco-friendly solid fuel using coffee by-products according to an embodiment of the present application.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise. In the present application, terms such as “comprise” or “have” are intended to designate that the features, components, etc. described in the specification are present, and one or more other features or components may not be present or may be added. Doesn't mean there isn't.

In the present application, the terms “first”, “second”, etc. do not indicate an order in particular, and are simply to indicate that the terms described below are different from each other.

Unless defined otherwise, all terms used herein, including technical and scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

Conventionally, if the coffee by-products are manufactured into pellets at a high temperature and high pressure, the density of the pellets becomes too high, so that complete combustion is difficult or carbon monoxide generation through incomplete combustion becomes a problem. Accordingly, the present applicant inserts a certain amount or more of microspheres (spheres) that melt at a certain temperature into the pallet to create a passage through which air can pass during combustion, add solid peroxide, and generate oxygen during combustion to help ignition and complete combustion. This is to prevent the generation of carbon monoxide and to maximize the amount of calories originally possessed by coffee by-products.

Hereinafter, an eco-friendly solid fuel including coffee by-products of the present application and a manufacturing method thereof will be described in detail with reference to the accompanying drawings. However, the accompanying drawings are exemplary, and the scope of the eco-friendly solid fuel including coffee by-products of the present application and a manufacturing method thereof is not limited by the accompanying drawings.

Method for manufacturing eco-friendly solid fuels including coffee by-products

First, a method for producing an eco-friendly solid fuel including coffee by-products will be described.

1 is a flowchart for explaining a method of manufacturing an eco-friendly solid fuel using coffee by-products according to an embodiment of the present application.

As shown in FIG. 1 , the method for producing an eco-friendly solid fuel including coffee by-products includes the steps of preparing coffee by-products (S10); A pre-treatment step of coffee by-products of mixing an organic compound with the prepared coffee by-products (S20); A first mixing step (S30) of mixing a liquid organic binder with the pre-treated coffee by-product to form a first mixture; A second mixing step (S40) of mixing the thermoplastic resin of the hollow spheroid type with the first mixture to form a second mixture; a third mixing step (S50) of mixing a solid peroxide with the second mixture to form a third mixture; And it may include a molding step (S60) of molding the third mixture in a predetermined pressure range.

Hereinafter, a method for producing an eco-friendly solid fuel including coffee by-products, which is an aspect of the present application, will be described in detail for each step.

First, a coffee by-product is prepared (S10).

As used herein, the term "coffee by-product" includes coffee grounds provided from coffee beans, and may include all coffee sludge, coffee grounds, coffee waste, coffee extraction residues, etc. left while manufacturing liquid coffee using coffee beans. used in meaning

Then, a step of pre-treating the coffee by-product of mixing the organic compound with the prepared coffee by-product is performed (S20).

As used herein, the term “organic compound” refers to an organic compound having solubility in water and oil at the same time. It is meaningful to minimize the process time of the pretreatment step by removing the fat and/or caffeine contained in the coffee by-products.

The organic compound may also be used interchangeably with the terms organic solvent and organic solvent, and specifically, it may include at least one selected from the group consisting of acetone, isopropyl alcohol, propyl alcohol, normal propanol, propanol and ethanol. Preferably, the organic compound may be ethanol or normal propanol.

Here, for example, 200 to 400 parts by weight of an organic compound may be mixed with respect to 100 parts by weight of the prepared coffee by-product, but the present application is not limited thereto.

Specifically, coffee by-products and organic compounds are put into a stirrer, stirred, and then filtered using a 200 metal filter.

Here, it may further include the step of drying the coffee by-product pretreated with the organic compound under certain conditions to prepare degreasing and decaffeinated coffee powder. Specifically, the filtered coffee by-products may be dried using an oven at 100 °C.

Then, by mixing the liquid organic binder with the pre-treated coffee by-product, a first mixing step of forming a first mixture is performed (S30).

The organic binder may include at least one selected from the group consisting of an acetylated polyol, a silanol, and a polyfunctional polyol.

A liquid organic binder can be used to bind pre-treated coffee by-products. In particular, the hardness of the solid fuel may be determined according to the input amount of the organic binder.

Here, it is preferable to mix 1 to 20 parts by weight of a liquid organic binder with respect to 100 parts by weight of the pre-treated coffee by-product, and when the content of the organic binder is less than 1 part by weight, it cannot be maintained in a solid state, whereas the content of the organic binder is 20 parts by weight Combustion does not work well in the case where wealth is exceeded.

As described above, the first mixture formed by mixing the pre-treated coffee by-product with a liquid organic binder is in the form of a slurry.

Here, fibers may be added and mixed, and by including fibers, the role of the binder may be improved. The content of the fiber that can be included may be 1 to 20 parts by weight, and when the content is less than 1 part by weight, it cannot be maintained in a solid state, whereas when the content exceeds 20 parts by weight, combustion is poor.

Then, a second mixing step of mixing the thermoplastic resin of the hollow spheroid type with the first mixture to form a second mixture is performed (S40).

As used herein, the term "hollow globule" is a form having a shape of a sphere with an empty interior, and the average diameter of the sphere may be 0.1 mm to 5 mm. Globules (microspheres) contain air (preferably oxygen) inside, which helps to release a lot of heat during combustion. In the method of manufacturing such hollow globules, for example, melted wax is injected with air (oxygen) in a microchannel, and when sprayed, a sphere in which air is trapped inside can be manufactured. It has a melting point of 120 °C to 300 °C, and a sphere having a melting point of this level can help combustion when ignited. If the melting temperature is too low, air leaks during storage, or if the melting temperature is too high, it does not melt during combustion and thus does not function properly.

A certain amount or more of globules (spheres) may be inserted into the pellet to provide a passage for air to pass through during combustion. In particular, it may be a wax having an average diameter of 0.1 mm to 1.0 mm, and having a melting point at 120° C. to 300° C. or higher. However, the present application is not limited thereto.

It is preferable to mix 1 to 50 parts by weight of the hollow spheroid type thermoplastic resin in the first mixture, and in this range, it can serve as an excellent oxygen supply to the solid fuel of the present application.

Then, a third mixing step of mixing the second mixture with the solid peroxide to form a third mixture is performed (S50).

During pellet combustion by adding solid organic or inorganic organic_inorganic peroxides, in addition to the oxygen provided from the outside, oxygen is additionally supplied to aid combustion, thereby providing high calorific value through complete combustion.

Solid peroxides include urea hydrogen peroxide, sodium peroxide, potassium peroxide, sodium percarbonate, potassium percarbonate and hydrogen peroxide. (hydrogen peroxide) may include at least one selected from the group consisting of.

It is preferable to mix 1 to 30 parts by weight of solid peroxide in the second mixture, which does not help in combustion when the content of solid peroxide is less than 1 part by weight, and spontaneous ignition during storage when the content of solid peroxide exceeds 50 parts by weight there is a risk of

At least one of the first mixing step, the second mixing step, and the third mixing step may be stirred at room temperature. That is, the mixture is stirred at room temperature without applying heat. The stirred coffee by-product mixture becomes a fluid sludge.

Then, a molding step of molding the third mixture in a predetermined pressure range is performed (S60).

The third mixture in a sludge state may be put into a molding mold having a predetermined shape and dried to prepare a solid fuel. Drying conditions are low pressure and room temperature to prevent deformation of microspheres and solid peroxides.

The molding step may be performed in a temperature range of 20 to 30. In addition, the pressure range is not particularly limited, and a pressure capable of forming a solid fuel may be applied, which may be appropriately selected from techniques applicable to the technical field of the present application.

Here, the shape of the solid fuel is not particularly limited, but may be a pellet shape.

Eco-friendly solid fuels with coffee by-products

Hereinafter, an eco-friendly solid fuel including coffee by-products, which is an aspect of the present application, will be described.

The solid fuel may include a coffee by-product, an organic binder, a hollow spheroid type thermoplastic resin, and a solid peroxide.

Coffee by-products may be included as the main fuel.

An organic binder may be included as a binder for binding coffee by-products.

The thermoplastic resin is in the form of hollow globules, as described above, and contains oxygen in the hollow portion, and may be included as a passage for supplying oxygen during combustion.

Solid peroxide may be included as an additional oxygen supply in addition to external oxygen during combustion.

Here, it may include 1 to 20 parts by weight of an organic binder, 1 to 50 parts by weight of a hollow spheroid type thermoplastic resin, and 1 to 30 parts by weight of a solid peroxide based on 100 parts by weight of the coffee by-product.

In such a solid fuel, a certain amount or more of microspheres (spheres) melting at a certain temperature are inserted into the pellet to provide a passage through which air can pass during combustion, and solid peroxide is added to generate oxygen during combustion to ignite and complete combustion. By helping to prevent the generation of carbon monoxide, it is possible to maximize the amount of calories originally possessed by coffee by-products.

Hereinafter, the present application will be described in more detail through experimental examples.

[Experimental Example 1]

In order to confirm the complete combustion of the solid fuel of the present application, the following experiment was performed.

[Example 1]

100 g of coffee by-products were put into the stirrer before jigong, and 300 g of 　 organic solvent was added to the stirrer and stirred. After the mixture was filtered using a 200 mesh metal filter, the filtered coffee by-product was placed in an oven at 100° C. and dried.

20 g of a liquid organic binder was added to 100 g of the dried coffee by-product and stirred to prepare a coffee by-product slurry. 30 g of microspheres were added to the prepared slurry and stirred. Then, 5 g of solid peroxide was additionally added and stirred again.

The prepared slurry was put into a mold, pressurized at 25° C. and 10KG/cm 2 to form a shape, dried under reduced pressure at room temperature, and fixed with a binder to prepare Example 1 as a sample.

[Example 2]

100 g of coffee by-products were put into the stirrer before jigong, and 400 g of 　 organic solvent was added to the stirrer and stirred. After the mixture was filtered using a 200 mesh metal filter, the filtered coffee by-product was placed in an oven at 100° C. and dried.

10 g of a liquid organic binder was added to 100 g of the dried coffee by-product and stirred to prepare a coffee by-product slurry. 20 g of microspheres were added to the prepared slurry and stirred. Then, 3 g of solid peroxide was additionally added and stirred again.

The prepared slurry was placed in a mold, pressurized at 25° C. and 10KG/cm 2 to form a shape, dried under reduced pressure at room temperature, and fixed with a binder to prepare Example 2 as a sample.

[Comparative Example 1]

100 g of coffee by-products were put into the stirrer before jigong, and 400 g of 　 organic solvent was added to the stirrer and stirred. After the mixture was filtered using a 200 metal filter, the filtered coffee by-product was placed in an oven at 100° C. and dried.

10 g of a liquid organic binder was added to 100 g of the dried coffee by-product and stirred to prepare a coffee by-product slurry. The prepared slurry was placed in a mold, pressurized at 25° C., 10KG/cm2 to form a shape, dried under reduced pressure at room temperature, and a binder was fixed to prepare Comparative Example 1 as a sample.

[Evaluation of calorific value]

For the solid fuels of Examples 1 and 2 and Comparative Example 1, calorimetry was measured using a calorimeter, and the calorimeter used was IKA's C 200, and a combustion calorimeter analyzed through “double drying” was used. . The sample was loaded into the digestion vessel and filled with oxygen (30 bar), the combustion process started with an ignition flame and the experiment was ended when the sample was completely burned. By measuring the temperature increase, the caloric value or calorific value of the sample was analyzed. The measurement results are shown in Table 1 below.

Calorific value (KCal/Kg) Example 1 6370 Example 2 5630 Comparative Example 1 4500

As shown in Table 1, Examples 1 and 2 had a calorific value of 6370 and 5630, respectively, and Comparative Example 1 had a calorific value of 4500. Through this, the solid fuel of the present application including both the hollow globules and the peroxide had a calorific value was significantly high, and it was confirmed that the possibility of complete combustion was greatly high.

Although the above has been described with reference to preferred embodiments of the present application, those skilled in the art can variously modify and change the present application without departing from the spirit and scope of the present invention as set forth in the claims below. You will understand that you can.

Claims (10)

preparing a coffee by-product;
A pre-treatment step of coffee by-products of mixing an organic compound with the prepared coffee by-products;
A first mixing step of mixing a liquid organic binder with the pre-treated coffee by-product to form a first mixture;
a second mixing step of mixing the thermoplastic resin of the hollow spheroid type with the first mixture to form a second mixture;
a third mixing step of mixing the solid peroxide with the second mixture to form a third mixture; and
A method for producing an eco-friendly solid fuel including a coffee by-product comprising a molding step of molding the third mixture in a predetermined temperature range and a predetermined pressure range.
The method of claim 1,
The manufacturing method is
preparing a coffee by-product;
A pretreatment step of coffee by-products of mixing 200 to 400 parts by weight of an organic compound based on 100 parts by weight of the prepared coffee by-product;
A first mixing step of mixing 1 to 20 parts by weight of a liquid organic binder with respect to 100 parts by weight of the pre-treated coffee by-product to form a first mixture;
A second mixing step of forming a second mixture by mixing 1 to 50 parts by weight of a hollow spheroid type thermoplastic resin with respect to 100 parts by weight of coffee by-products in the first mixture;
a third mixing step of mixing 1 to 30 parts by weight of a solid peroxide based on 100 parts by weight of coffee by-products in the second mixture to form a third mixture; and
A method for producing an eco-friendly solid fuel including a coffee by-product comprising a molding step of molding the third mixture in a predetermined pressure range.
The method of claim 1,
The pretreatment step of coffee by-products is a method of manufacturing an eco-friendly solid fuel including coffee by-products, which is a step of removing oil and/or caffeine components of coffee by-products.
The method of claim 1,
The organic compound is acetone, isopropyl alcohol, propyl alcohol, normal propanol, a method for producing an eco-friendly solid fuel including coffee by-products containing at least one selected from the group consisting of propanol and ethanol.
The method of claim 1,
The organic binder is a method for producing an eco-friendly solid fuel including coffee by-products comprising at least one selected from the group consisting of acetylated polyols, silanols and polyfunctional polyols.
The method of claim 1,
A method for producing an eco-friendly solid fuel having an average diameter of the hollow globules of 0.1 mm to 5 mm.
The method of claim 1,
Solid peroxides include urea hydrogen peroxide, sodium peroxide, potassium peroxide, sodium percarbonate, potassium percarbonate and hydrogen peroxide. (hydrogen peroxide) A method for producing an eco-friendly solid fuel including coffee by-products comprising at least one selected from the group consisting of.
The method of claim 1,
At least one of the first mixing step, the second mixing step, and the third mixing step is a method for producing an eco-friendly solid fuel including coffee by-products comprising stirring at room temperature.
Eco-friendly solid fuel including coffee by-products, organic binders, hollow globules-type thermoplastic resins, and coffee by-products containing solid peroxides.
10. The method of claim 9,
An eco-friendly solid fuel including coffee by-products comprising 1 to 20 parts by weight of an organic binder, 1 to 50 parts by weight of a hollow spheroid type thermoplastic resin, and 1 to 30 parts by weight of a solid peroxide, based on 100 parts by weight of the coffee by-product.

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