KR20160070402A - Solid fuel composition and method for manufacture of the same - Google Patents

Abstract

The present invention relates to a solid fuel composition and a method for producing the same. The solid fuel composition has flexibility so that solid fuel storage can be facilitated, is capable of maintaining form stability of a solid fuel based on alpha starch during combustion, can be conveniently cut to a desired size by hand instead of a tool, is hygienic because flames and flying ashes are prevented during the combustion, does not generate barium gas, which is a carcinogen harmful to a human body, and is capable of excellent combustion time.

Description

TECHNICAL FIELD [0001] The present invention relates to a solid fuel composition,

The present invention relates to a solid fuel composition which is easy to be instantly ignited and a method for producing the solid fuel composition. More particularly, the present invention relates to a solid fuel composition having flexibility to facilitate storage during storage of solid fuel, The solid fuel composition is a solid fuel composition capable of maintaining safety and can be easily cut to a desired size by hand during use. It is a hygienic solid fuel composition capable of preventing flame and re- Which is a solid fuel composition in which barium gas as a material is not generated, and which can maintain an excellent combustion time, and a production method thereof.

Solid fuel is easy to carry and easy to use, and it is mainly used as a cooking appliance for kitchens or cooking appliances in restaurants or at home or outdoors.

Conventional solid fuels are produced by compacting oak charcoal or sawdust into a certain shape. Such solid fuels are difficult to ignite, and in recent years, solid fuels mixed with additives have been produced so as to facilitate ignition.

An example of a solid fuel can be found in EP 0144698 entitled " Solid Fuel Composition ", Published Patent Applications 1999-0086570 "Solid Fuel Composition ", and Published Patent No. 10-0535303 entitled " Solid Fuel Composition ".

Most of charcoals which can be instantly ignited as mentioned above are not practically used. Among them, useful ones include a solid fuel composition employing a barium compound as a combustion stabilizer or a charcoal or an ignition charcoal .

However, barium nitrate has a problem that it causes human head injury such as a headache due to barium gas generated during combustion, a mental disorder, and some vomiting.

On the other hand, charcoal, which is produced in a simple penetration type, has a cost saving effect, but the viscosity of the starch which is put into the adhesive material by thinner or alcohol is lowered, It is difficult to expect the overall quality balance as well as the difficulty of storage for a long period of time.

An object of the present invention is to provide a solid fuel composition capable of instant ignition and capable of maintaining excellent combustion time without generating barium gas which is a carcinogenic substance harmful to human body, and a method for producing the same.

Another object of the present invention is to provide a solid fuel which can be easily ignited by a user, which can be easily cut and used by a user in a size suitable for the use of the solid fuel, .

Another object of the present invention is to provide a solid fuel composition capable of easily molding a solid fuel into various shapes.

The present invention relates to a solid fuel composition,

Coconut shell activated carbon or bark charcoal in a ratio of 1: 1 or one kind of char to 55 to 65% by weight of the total constituent materials;

5 to 7% by weight of a starch and binder mixed with one or more of pregelatinized starch (hereinafter referred to as "alpha starch"), unmineralized starch, and nitrocellulose;

22 to 25% by weight of a mixture of industrial alcohols (methanol, ethanol, isopropyl alcohol, acetone), vegetable oil (Bio-diesel), and one or more kinds of solvents;

Less than 3 wt.% Of an opioid consisting of 4 to 8mesh of elvan and

Less than 2% by weight of a molding aid mixed with 1: 1 of any one or more of borax, sorbitol, dioctyl terephthalate and polyvinyl pyrrolidone.

The present invention can be manufactured by injecting a mixture of the above-described respective components in a mixer, stirring the mixture for 15 to 20 minutes on a stirrer, taking out the mixture from the mixer, and molding a solid fuel having a specific shape using a molding machine or an extruder have.

The present invention is based on the fact that the vegetable oil used together with the alcohol is produced based on natural raw materials, so that it is possible to produce a fragrance of plant natural at the time of combustion, thereby alleviating discomfort during use and producing an environmentally friendly solid fuel.

In addition, since nitrocellulose and alpha starch used as binders have an adhesive force even at room temperature, they complement each other with nitrocellulose, simplifying the process of manufacturing the product and maintaining the adhesive force of the char material.

Further, according to the present invention, by employing alpha starch and unminonized sugar, it is easy to form during combustion, shape stability can be maintained when the product is burned, flame can be prevented from being blown and re- There is an effect.

1 is a photograph showing an actual manufacturing process of a solid fuel manufacturing process in which instant ignition is easy according to the present invention.
2 is a photograph showing an example of the use of the solid fuel produced according to the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments of a solid fuel composition and a method for producing the same according to the present invention will be described in detail.

The solid fuel composition of the present invention comprises

Coconut shell activated carbon or bark charcoal powder at a ratio of 1: 1 or 55 to 65 wt% of any one kind of charcoal powder;

5 to 7% by weight of a combination and binder of one or a mixture of pregelatinized starch, unmineralized starch and nitrocellulose;

22 to 25% by weight of a solvent mixture of any one or more of industrial alcohols (methanol, ethanol, isopropyl alcohol, acetone, etc.) and vegetable oil (Bio-diesel);

Less than 3 wt.% Of an opioid consisting of 4 to 8mesh of elvan and

Can be prepared at a composition ratio of less than 2% by weight of a molding aid which is a 1: 1 blend of one or more of borax, sorbitol, dioctyl terephthalate and polyvinyl pyrrolidone. The constituent materials of the present invention are as follows

1. Basic material

Charcoal powder, which is a basic material, can be made of 55 to 65% by weight of charcoal mixed with coconut shell activated carbon or bark charcoal in a ratio of 1: 1.

Since the above-mentioned charcoal powder is closely related to the product forming rate due to the influence of moisture during the interaction with the adhesive material, particularly nitrocellulose, the moisture content is preferably 3 to 12 wt%.

In addition, in order to reduce the influence of the above-mentioned charcoal powder and to pursue the function closest to the natural charcoal, a certain amount of charcoal (charcoal) and bark charcoal are crushed into 8-20 mesh and 4-8 mesh, respectively And 10-20% by weight of the coconut shell activated carbon may be employed.

The solid fuel product can be produced even when the water content of the charcoal powder is 12% by weight or more. However, when the water content is 12% by weight or more, the amount of the adhesive component increases relative to the total ratio, do.

Conversely, when the moisture content of the charcoal powder is less than 3% by weight, the amount of the adhesive component that can be absorbed by the charcoal powder is relatively large, so that the surface of the product after the product is formed by the action of the charcoal powder pore occurs.

2. Solvent

The solvent is employed in an amount of 22 to 25% by weight based on the total weight of the constituent materials for mixing the constituent material according to the present invention into the viscoelastic material. Examples of the solvent include a mixture of 70 to 90% by weight of an industrial alcohol such as methanol, ethanol, acetone, diacetone alcohol, or an alcohol mixture thereof and 10 to 30% by weight of a biofuel extracted from vegetable oil such as palm oil Can be employed.

When the amount of the solvent is less than 20% by weight based on the total weight of the constituent material, the binding component becomes too strong due to agitation with nitrocellulose, unmodified starch, and alpha starch, When it is used in an amount of 35% by weight or more based on the total weight of the constituent material, it is difficult to maintain a constant shape when the product is molded.

When the biofuel is less than 10% by weight of the industrial alcohol, the expected efficiency is low. When the biofuel is used in an amount of 30% by weight or more, the nitrocellulose, which is an adhesive component, is not completely dissolved by the alcohol.

Biofuels used with industrial alcohols are manufactured based on natural raw materials, so they are useful for eliminating discomfort caused by the natural fragrance of plants when burning solid fuels. Eco-friendly products can be produced by using environmentally friendly biofuels extracted from alcohol and vegetable oil. .

The above-mentioned solvent may be employed by mixing one or more of the above-mentioned ethanol, methanol, acetone, and isopropyl alcohol, and isopropyl alcohol should be employed at least 5 wt% or more based on the weight% of the solvent.

This is because isopropyl alcohol not only serves as a stabilizer of the above-mentioned alcohol but also influences the mixing stability of the following adhesive materials.

3. Viscosity and binding agent

For the molding and maintenance of the solid fuel, the tackiness and binder composed of nitrocellulose and alpha starch may be employed in an amount of 30% by weight to 40% by weight based on the total weight of the raw materials.

The nitrocellulose described above is characterized by room temperature curing, so that the product can be manufactured by omitting a separate curing process after the product is formed, thereby shortening the manufacturing process (the conventional starch (tapioca, potato starch, corn starch Etc.) can be used to produce a cured product through high temperature drying during product molding).

Alpha starch means that ordinary starch is converted into a sticky adhesive component (luxurious) by applying heat from outside after applying water, but starch starch is a starch which has adhesive force only by the tinge of cold water.

Since the alpha starch has an adhesive power at room temperature, it does not require the same process as drying process of other products in the production of products by complementary action with nitrocellulose, thus not only simplifying the process but also continuing the adhesion of charcoal raw materials, And the shape stability of the product can be maintained even when it is burned (used). The alpha starch may be used by mixing undiluted sugar (sugar).

Alpha starch and non-starch can prevent sparks from burning during combustion, keep the product in its original form during combustion, and prevent re-runoff when the oil burns over the burning charcoal.

If the amount of the alpha starch and the undissolved sugar is more than 7% by weight based on the total weight of the constituent materials, there is a problem in the product formability due to the lowering of the binding force.

The starch is a starch which is not a general starch but a starch which has been subjected to a hydrolysis process. The starch is mainly obtained by crushing the starch powder with a crusher having a size of not more than a general crystal shape (0.5 to 1 mm) but not less than 40 mesh.

The above-mentioned fusing agent and the binder may be used alone or in combination with the nitrocellulose without mixing the alpha starch and the unmodified sugar. If the amount of the nitrocellulose is more than 7% The incombustible smell is generated in incomplete combustion conditions, and if it is less than 3% by weight of the total constituent materials, the bonding force between the charcoal powders is lowered and the molding is not performed well. Moreover, If an impact is applied, there is a risk of deformation.

When the amount is less than 30% by weight based on the total weight of the constituent material, the ability of the char powder to be adsorbed is lower than the adsorption capacity of the char powder. If the amount is more than 40% by weight, It is difficult to keep it in a certain shape after molding, and it is required to wait for the alcohol component to volatilize in the manufacturing process.

4. Molding aid

The molding aid is used to facilitate molding of the solid fuel, to inhibit the volatilization of the alcohol component and to prevent the undesired powder and alpha starch from precipitating on the product surface. The molding aid is borax, sorbitol and polyvinylpyrrole Includes money.

The molding aid may be selected from a mixture of borax, sorbitol and polyvinylpyrrolidone, or one of them may be selected to be less than 2% by weight based on the entire composition.

When any one of borax, sorbitol, and polyvinylpyrrolidone is selected, it is preferably less than 2% by weight based on the total weight of the composition, and mixed with 1: 1 if mixed.

The above-mentioned borax is disadvantageous in that it is difficult to remove charcoal products from a mold for molding a solid fuel product, and there is a disadvantage in the process of having a molding device or a molding die of an extrusion device after producing a certain amount of product. However, It is possible to smoothly separate between the product and the molding die, and also to reduce the inconvenience of holding the molding die because no residue is left on the molding die, and the shape and shape of the product can be kept constant without being changed.

The sorbitol suppresses the volatilization of the alcohol component and inhibits the precipitation of the dissolved powder and the alpha starch powder, thereby preventing the occurrence of the haze on the surface of the solid fuel.

It prevents the volatilization of the combustion components before the product is packed in the container after the product is molded or after the product is opened, and it prevents the precipitation of powder or starch in the unfused powder and helps maintain the product's property and maintain its function.

The above-mentioned dioctyl terephthalate and polyvinyl pyrrolidone have the molding stability function of the product (solid fuel) and maintain the durability regardless of the waiting time of the adhesive component at the time of forming the product, .

5. Supporting agent

The elvan has the function of giving the calorific value and the combustion sustainability of the product. The criterion for using the elvan stone of the present invention is based on a raw material having a size of 2 to 3 mm rather than a powder. Since the elvan is not a main function of the solid fuel, it can be used in an amount of 3 to 8% by weight based on the total weight of the constituent material. When the amount is less than 3% by weight, the function of combustion sustainability is deteriorated. The time required for burning the charcoal (the state in which the charcoal is turned off in the state where the flame is removed when the product is burned) is dramatically increased.

Table 1 below shows the test results of the solid fuel produced through the constituent material according to the present invention, and the result is compared with the conventional solid fuel (registered patent No. 0144698 "solid fuel composition")

Constituent material Example 1 Example 2 Example 3 Example 4 Conventional solid fuels Basic material Coconut charcoal, charcoal powder 1: 1 mixed 65 63 60 58 - solvent 5% by weight of isopropylene alcohol and 50% 22 26 25 25 - Viscosity and binders Alpha starch and non-starch 7 5 6 6 - 4 5 6 6 - Molding
Supplements 1: 1 mixture of borax and sorbitol 2 One 0 2 - Supporting agent Elven stone 0 0 3 3 - Product softness medium medium Ha Prize Ha Calorific value Ha Ha Prize Prize Prize Burning time (minutes) 70 70 90 80 70 Flame Retention Time (minutes) 7 10 10 9 - Note:
* Additive unit: wt%
* The softness of the product indicates the length at which the product can be cut by ordinary adults into the solid fuel.
(Upper: 1cm or less, middle: 1-2cm, lower: 2-4cm).
The measurement of the calorific value is referred to as a relative measurement in the present embodiment (not an absolute value but a relative value between the embodiments, which is divided into upper and lower parts).
* Burning time is the time that the product has been completely burned after ignition.
* Flame retention time is the time the alcohol in the product burns after ignition.

In contrast to Examples 1 to 4 of Table 1, the amount of the charcoal powder, the molding assistant, the tacking agent and the binder of Example 1 is larger than that of Examples 4 and 2, It is understood that the degree of softness is different due to the difference in the presence or absence of the molding aid even though the grade is less favorable and the charcoal powder of Example 3 is used more than the charcoal powder of Example 4. [

The results of Examples 1 to 4 are the same as those of the control group, and the results are the same as those of Examples 1 and 2 except for the calorific value of Examples 1 and 2. Therefore, The powder is useful at 58 to 65 wt.%, The solvent at 22 to 25 wt.%, The tackifier and binder at 5 to 7 wt.%, The molding aid at less than 2 wt.

The most preferred solid fuel composition of the present invention has 58% by weight of charcoal mixed with 1: 1 of palm char activated carbon powder and bark charcoal, 25% by weight of industrial alcohol and vegetable bio-fuel (palm oil) A mixture of 6% by weight of cellulose, 3% by weight of alpha starch, 3% by weight of undiluted starch, 3% by weight of elvan stearate, one or more of dioctyl terephthalate, polyvinyl pyrrolidone, borax and sorbitol in a ratio of 1: 1 And less than 2% by weight.

A method for producing a solid fuel having the above composition ratio is as follows.

The above-mentioned constituent materials are mixed in the above composition ratio by stirring for 20 minutes.

At this time, the alpha starch and the unmodified sugar may not be dispersed as a whole when they are added in a batch, and may be aggregated.

Since the molding aid of borax, sorbitol, dioctyl terephthalate and polyvinyl pyrrolidone is used in small amounts, it may be stirred in a separate mixing device for uniform stirring with other raw materials. As the mixed liquid at this time, acetone It is most suitable.

Tack and binder and charcoal powder are put in a separate stirrer and stirred for about 1-2 minutes.

The stirred charcoal powder is made of a viscoelastic material and is molded into a cylindrical shape or a variety of shapes through a molding device having a frame like a briquette or an extruding device having a cylindrical shape.

Unlike the conventional solid fuel (charcoal) which must be dried at a high temperature, the solid fuel produced in the above-described manner can be sealed and packaged and cut to a required size for use as shown in FIGS. 1 and 2, It is more convenient to use than fuel.

Claims (4)

Coconut shell activated carbon or bark charcoal powder at a ratio of 1: 1 or 55 to 65 wt% of any one kind of charcoal powder;
5 to 7% by weight of a combination of a starch, an unmodified starch, and a nitrocellulose, or a combination of two or more thereof;
22 to 25% by weight of a solvent mixture of one or more kinds of industrial alcohols and vegetable oils;
Less than 3 wt.% Of an opulent, consisting of quartz of 4 to 8mesh size,
And less than 2% by weight of a molding aid which is a mixture of one or more of borax, sorbitol, dioctyl terephthalate and polyvinyl pyrrolidone in a ratio of 1: 1. The method according to claim 1,
Wherein the moisture content of the coconut angle activated carbon and the bark charcoal powder is 12 wt% or less. The method according to claim 1,
Wherein the industrial alcohol is a mixture of any one or more of ethanol, methanol, acetone, and isopropyl alcohol. Coconut shell activated carbon or bark charcoal powder at a ratio of 1: 1 or 55 to 65 wt% of any one kind of charcoal powder;
5 to 7% by weight of a blend of binders and binders mixed with one or more of alpha-starch, non-starch, and nitrocellulose;
22 to 25% by weight of a solvent mixture of one or more kinds of industrial alcohols and vegetable oils;
Less than 3% by weight of an abrasive consisting of 4 to 8mesh of elvan;
Less than 2% by weight of a molding aid mixed with one or more of borax, sorbitol, dioctyl terephthalate and polyvinylpyrrolidone in a ratio of 1: 1 was added to a stirrer, stirred for 15 to 20 minutes, And the solid fuel is taken out and molded into a solid fuel having a specific shape through a molding device or an extruding device, and packed.

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