Coated fuel and method for manufacturing the same

Abstract

To provide a coated fuel and a method for manufacturing the same. [Solution] The present invention provides a coated fuel comprising a flammable film and a flammable substance covered with the flammable film, wherein the flammable substance comprises one or more selected from the group consisting of gelatin and polysaccharides.

Description

[Technical Field]

[0001] The present invention relates to a coated fuel and a method for producing the same. [Background technology]

[0002] In Japan, approximately 400 million tons of industrial waste are generated annually, but the recycling rate remains at only about 50%. Therefore, various technologies for recycling industrial waste are being developed. For example, technologies for reusing waste plastics and sludge as fuel are being developed. Reusing waste as fuel is attracting attention because it can be applied to a wide variety of waste. However, when using low-viscosity waste or waste with various shapes as fuel, there have been problems with fuel handling, such as contamination of furnaces and other equipment by the low-viscosity waste during fuel input, and difficulties in transportation. [Overview of the project] [Problems that the invention aims to solve]

[0003] The problem that this invention aims to solve is to provide a novel fuel with improved handling properties. [Means for solving the problem]

[0004] As a result of diligent research by the inventors, they have found that covering a specific flammable substance used as fuel with a flammable film improves the handling properties of the resulting fuel.

[0005] In other words, the present invention encompasses the following: [1] A coated fuel comprising a flammable film and a flammable substance covered by the flammable film, wherein the flammable substance comprises one or more selected from the group consisting of gelatin and polysaccharides. [2] The coated fuel according to [1], wherein the polysaccharide is one or more selected from the group consisting of starch and carrageenan. [3] The coated fuel according to [1] or [2], wherein the content of one or more selected from the group consisting of gelatin and polysaccharides is 50% by mass or more and 70% by mass or less with respect to the total amount of the combustible substance. [4] The coated fuel according to any one of [1] to [3], wherein one or more selected from the group consisting of gelatin and polysaccharides are waste obtained in the manufacturing process of the capsule coating. [5] The coated fuel according to any one of [1] to [4], wherein the aforementioned combustible film comprises a resin as its main component. [6] The coated fuel according to any one of [1] to [5], wherein the combustible substance further comprises one or more selected from the group consisting of sludge, plastic, glycerin, sorbitol, and water. [7] The coated fuel according to [6], wherein one or more selected from the group consisting of sludge, plastic, glycerin, sorbitol, and water is waste obtained in the process of manufacturing the coating of the capsule. [8] A coated fuel as described in any one of [1] to [7], used as an ignition agent. [9] The coated fuel according to any one of [1] to [8], wherein the coated fuel is RPF.

[10] The coated fuel according to any one of [1] to [9], wherein the calorific value of the combustible film and the combustible substance is 10 MJ / kg or more and 100 MJ / kg or less, respectively.

[11] A method for producing coated fuel according to any one of [1] to

[10] , A process for recovering waste containing one or more substances selected from the group consisting of gelatin and polysaccharides, which is generated during the manufacturing process of capsule coatings, A method comprising the step of covering the combustible material, including the waste, with the combustible film. [Effects of the Invention]

[0006] According to the present invention, it is possible to provide a novel fuel with improved handling properties. It is also possible to provide a method for producing the fuel.

Brief Description of the Drawings

[0007] [Figure 1] It is a photograph showing the coated fuel of one embodiment of the present invention.

Embodiments for Carrying Out the Invention

[0008] Hereinafter, embodiments of the present invention (hereinafter referred to as "the present embodiment") will be described, but the scope of the present invention is not construed as being limited to the following embodiments.

[0009] <Coated fuel>[[ID=2l]] In the first embodiment, the coated fuel of the present embodiment includes a combustible film and a combustible substance covered with the combustible film, and the combustible substance includes at least one selected from the group consisting of gelatin and polysaccharides.

[0010] As used herein, "coated fuel" refers to fuel at least a part of the surface of which is covered with an arbitrary substance. The coated fuel in the present embodiment is a fuel in which at least a part of the surface of the combustible substance is covered with a combustible film which is a part of the fuel. From the viewpoint of more effectively and surely achieving the effects of the present invention, in the coated fuel, it is preferable that 50% or more of the surface of the combustible substance is covered with the combustible film, more preferably 70% or more, still more preferably 90% or more, particularly preferably 95% or more, and extremely preferably 100%, that is, the entire surface of the combustible substance is covered.

[0011] The coated fuel includes a combustible film. As used herein, "combustible film" refers to a substance formed in a film shape and having a property of being easily combustible in fire.

[0012] The combustible film of the present embodiment may contain any components as long as it is combustible, but preferably contains a resin as a main component. The main component refers to the component with the highest content among the components contained in the resin. For example, the resin content may be 50% by mass or more and 100% by mass or less, 70% by mass or more and 100% by mass or less, 90% by mass or more and 100% by mass or less, or 95% by mass or more and 100% by mass or less with respect to the total amount of the combustible film.

[0013] The calorific value of the combustible film varies depending on the type of resin contained in the combustible film and the like, but is preferably 10 MJ / kg or more and 100 MJ / kg or less, and more preferably 20 MJ / kg or more and 70 MJ / kg or less. The calorific value of the combustible film may be, for example, 20 MJ / kg or more and 30 MJ / kg or less, 30 MJ / kg or more and 40 MJ / kg or less, 40 MJ / kg or more and 50 MJ / kg or less, 50 MJ / kg or more and 60 MJ / kg or less, or 60 MJ / kg or more and 70 MJ / kg or less.

[0014] In this specification, the calorific value can be measured by a method known to those skilled in the art. For example, it can be measured according to the calorific value test method of Japanese Industrial Standard JIS Z7302-2 (1999), the adiabatic calorimeter method. The adiabatic calorimeter method may be an adiabatic calorimeter method in accordance with JIS Z7302-2 (1999). The adiabatic calorimeter method in accordance with JIS Z7302-2 (1999) is the same as the calorific value test method of JIS Z7302-2 (1999) except that the sample is dried in advance when measuring the calorific value.

[0015] The resin contained in the flammable film is not particularly limited and may be either a thermoplastic resin or a thermosetting resin. Examples of thermoplastic resins include polyethylene, polyester, polypropylene, polystyrene, polybutadiene, polyethylene terephthalate, vinyl chloride, ABS resin, AS resin, acrylic resin, methacrylic resin, polyamide, polycarbonate, polyacetal, and polybutylene terephthalate. Examples of thermosetting resins include polyurethane, phenolic resin, melamine resin, urea resin, epoxy resin, and silicone resin. The resin may also be made from biomass derived from plants or other sources. The resin may be used alone or in combination of two or more types.

[0016] The flammable film may contain any substance other than resin, as long as the film is flammable and maintains its shape as a film. The content of any substance may be 50% by mass or less, 30% by mass or less, 10% by mass or less, or 5% by mass or less, based on the total amount of the flammable film.

[0017] The thickness of the flammable film is not particularly limited and may be determined appropriately by those skilled in the art, but for example, it may be between 0.01 mm and 10 mm in thickness.

[0018] The method of obtaining the flammable film is not particularly limited; it may be manufactured using a known manufacturing method, or commercially available flammable film may be obtained.

[0019] The coated fuel comprises a combustible material covered with a combustible film. As used herein, “combustible material” means any material that is easily flammable, and “combustible material covered with a combustible film” means a combustible material in which at least a portion of the surface of the combustible material is covered with a combustible film. The combustible material may be in any state, for example, a solid or a liquid, or a mixture thereof. The combustible material may be, for example, a gel, jelly, cream, or paste. If it is a solid, it may be in powder or lump form, or a mixture of the above states. The combustible material may change state with temperature while covered with the combustible film.

[0020] The calorific value of a combustible substance varies depending on the type of substance it contains, but is preferably 1 MJ / kg or more and 100 MJ / kg or less, and more preferably 3 MJ / kg or more and 50 MJ / kg or less. The calorific value of a combustible substance may be, for example, 1 MJ / kg or more and 10 MJ / kg or less, 5 MJ / kg or more and 15 MJ / kg or less, 10 MJ / kg or more and 20 MJ / kg or less, 15 MJ / kg or more and 25 MJ / kg or less, 20 MJ / kg or more and 30 MJ / kg or less, 25 MJ / kg or more and 35 MJ / kg or less, 30 MJ / kg or more and 40 MJ / kg or less, 35 MJ / kg or more and 45 MJ / kg or less, or 40 MJ / kg or more and 50 MJ / kg or less.

[0021] The flammable substance includes one or more substances selected from the group consisting of gelatin and polysaccharides. The flammable substance may contain only gelatin or only polysaccharides, or it may contain both gelatin and polysaccharides.

[0022] As used herein, "gelatin" refers to a protein extracted from collagen that has been solubilized by physicochemical treatment. The form of gelatin may be arbitrary, and it may be in powder or liquid form. If it is liquid, it may be gelatin dissolved in any solvent such as water. If the gelatin is liquid, the water content (%) of the gelatin may be a value appropriately determined by a person skilled in the art, for example, 5% to 15%, 15% to 25%, 25% to 35%, 35% to 45%, or 45% to 55%.

[0023] Furthermore, as used herein, "polysaccharides" refers to sugars formed by the glycosidic bonding of numerous monosaccharide molecules to one another. The polysaccharides in this embodiment may be any polysaccharide, and examples of polysaccharides include starch, agarose, agar, carrageenan, alginic acid, salts of alginic acid, fucoidan, laminaran, cellulose, mannan, and fructan. From the viewpoint of more effectively and reliably achieving the effects of the present invention, it is preferable that the polysaccharides be one or more selected from the group consisting of starch and carrageenan. In one embodiment, the combustible substance contained in the coated fuel includes one or two polysaccharides selected from the group consisting of starch and carrageenan.

[0024] As used herein, "starch" refers to a substance formed by the glycosidic bonds of numerous glucose molecules. As used herein, "carrageenan" refers to galactan containing sulfate groups, and includes one or more selected from the group consisting of κ (kappa)carrageenan, ι (iota)carrageenan, and λ (lambda)carrageenan. If the cladding fuel contains carrageenan, the carrageenan may be one, two, or three selected from the group consisting of κ (kappa)carrageenan, ι (iota)carrageenan, and λ (lambda)carrageenan.

[0025] The amount of one or more substances selected from the group consisting of gelatin and polysaccharides contained in the flammable substance may be determined appropriately by a person skilled in the art according to the desired calorific value, etc. From the viewpoint of more effectively and reliably achieving the effects of the present invention, the amount may be 50% by mass or more and 70% by mass or less, more preferably 55% by mass or more and 65% by mass or less, based on the total amount of the flammable substance, for example, it may be 55, 56, 57, 58, 59, 60, 61, 62, 63, 64, or 65% by mass. From the viewpoint of increasing flammability, it may be 70% by mass or more, 80% or more, 90% by mass or more, 95% by mass or more, or 100% by mass.

[0026] If the flammable substance contains both gelatin and polysaccharides, the respective amounts may be determined appropriately by a person skilled in the art according to the desired calorific value, etc.

[0027] The flammable substance may further include one or more selected from the group consisting of gelatin and polysaccharides, as well as one or more selected from the group consisting of sludge, plastic, glycerin, sorbitol, and water. In one embodiment, the flammable substance includes one, two, three, four, five, or six selected from the group consisting of sludge, plastic, glycerin, sorbitol, and water.

[0028] In this specification, "sludge" refers to, for example, muddy waste remaining after the treatment of factory wastewater, and muddy waste generated in the manufacturing processes of various manufacturing industries. In this embodiment, the sludge is preferably dewatered sludge remaining after the treatment of factory wastewater. Sludge can also be classified into organic sludge and inorganic sludge depending on its composition. In this embodiment, the sludge may be either organic or inorganic sludge, but it is preferably organic sludge. As used herein, "plastic" refers to a material containing high polymers derived from fossil resources or plants, and includes the concept of resin. In this embodiment, the plastic may be, for example, a bioplastic, a thermoplastic resin, or a thermosetting resin.

[0029] The concentration of glycerin in this embodiment may be arbitrary, and it may be glycerin diluted with any solvent such as water. Furthermore, the form of sorbitol in this embodiment may be powder or liquid. If the sorbitol is liquid, the concentration may be arbitrary, and it may be sorbitol diluted with any solvent such as water.

[0030] If the combustible material further includes one or more selected from the group consisting of sludge, plastic, glycerin, sorbitol, and water, the content thereof may be determined appropriately by a person skilled in the art according to the desired calorific value, etc. From the viewpoint of effective utilization of waste, the content thereof is preferably 30% by mass or more and 50% by mass or less, and more preferably 35% by mass or more and 45% by mass or less, relative to the total amount of combustible material, for example, it may be 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, or 45% by mass.

[0031] If the flammable substance contains two or more substances selected from the group consisting of plastic, glycerin, sorbitol, and water, the content of each substance may be appropriately determined by a person skilled in the art according to the desired calorific value, etc. For example, from the viewpoint of increasing the calorific value, it is preferable that plastic be included in the coating fuel. From a similar viewpoint, the content of plastic may be 50% by mass or more and 100% by mass or less, 70% by mass or more and 100% by mass or less, 90% by mass or more and 100% by mass or less, or 95% by mass or more and 100% by mass or less, based on the total amount of plastic, glycerin, sorbitol, and water.

[0032] Gelatin, polysaccharides, sludge, plastics, glycerin, and sorbitol may be obtained commercially or from waste generated in the manufacturing processes of various industries. In particular, it is preferable to obtain them from waste generated in the manufacturing process of capsule coatings (hereinafter also simply referred to as "capsule coatings"). That is, it is preferable that one or more selected from the group consisting of gelatin and polysaccharides contained in the coated fuel, and one or more selected from the group consisting of sludge, plastics, glycerin, and sorbitol that may be contained in the coated fuel, are waste obtained in the manufacturing process of capsule coatings. Here, as used herein, "capsule" refers to a drug or supplement in which liquid or powdered active ingredients or other contents are contained in a capsule. Examples of capsules include hard capsules and soft capsules, but soft capsules are preferred in this embodiment. Furthermore, "capsule coating" refers to the coating that constitutes the above capsule.

[0033] Gelatin, polysaccharides, sludge, plastics, glycerin, or sorbitol may be recovered at any stage in the manufacture of the capsule coating, for example, through the following processes: For example, gelatin, polysaccharides, glycerin, sorbitol, or water can be recovered from waste products derived from the solution (e.g., the solution remaining in the container used to prepare the solution) generated in the process of preparing the capsule coating solution before curing. Also, for example, gelatin, polysaccharides, glycerin, sorbitol, or water can be recovered from the die-cut sheets generated when the capsule coating sheets are die-cut during the capsule molding and filling process. Also, for example, sludge can be recovered by dewatering the wastewater generated from the capsule coating manufacturing equipment. Also, for example, gelatin, polysaccharides, glycerin, sorbitol, or water can be recovered from capsule coating samples that are used to adjust the filling amount and shape of the capsules and are subsequently discarded.

[0034] The content of the combustible film in the coated fuel is not particularly limited and may be an amount appropriately determined by those skilled in the art. From the viewpoint of more effectively and reliably achieving the effects of the present invention, the content is preferably 0.001% by mass or more and 30% by mass or less, more preferably 0.01% by mass or more and 20% by mass or less, relative to the total amount of the coated fuel. For example, it may be 0.01% by mass or more and 5% by mass or less, 5% by mass or more and 10% by mass or less, 10% by mass or more and 15% by mass or less, or 15% by mass or more and 20% by mass or less.

[0035] The content of combustible substances in the coated fuel is not particularly limited and may be any amount. From the viewpoint of achieving the effects of the present invention more effectively and reliably, the content is preferably 70% by mass or more and 99.999% by mass or less, and more preferably 80% by mass or more and 99.99% by mass or less, relative to the total amount of coated fuel. For example, it may be 80% by mass or more and 85% by mass or less, 85% by mass or more and 90% by mass or less, 90% by mass or more and 95% by mass or less and 99.99% by mass or less.

[0036] The mass ratio of the flammable film to the flammable substance is not particularly limited and may be a mass ratio appropriately determined by those skilled in the art. From the viewpoint of more effectively and reliably achieving the effects of the present invention, the mass ratio of flammable film to flammable substance is preferably 1:2.5 to 1:100000, more preferably 1:4 to 1:10000, for example, 1:4 to 100, 1:100 to 1000, 1:1000 to 5000, or 1:5000 to 10000.

[0037] The size of the coated fuel is not particularly limited and may be determined appropriately by a person skilled in the art depending on the fuel's intended use. Its volume is 400 mm³. 3 The total is 2,250,000 mm. 3 Preferably, it is 900 mm 3 The above is 1,000,000 mm 3 It is more preferable that the following be the case, for example, 900 mm 3 10,000 mm or more 3 Below 10,000mm3 40,000 mm or more 3 40,000 mm or less 3 160,000 mm or more 3 160,000 mm or less 3 360,000 mm or more 3 360,000 mm 3 640,000 mm or more 3 640,000 mm or less, or 3 1,000,000 mm or more 3 It may be less. Also, its height is preferably 10 mm or more and 1,500 mm or less, more preferably 30 mm or more and 1,000 mm or less. For example, it may be 30 mm or more and 100 mm or less, 100 mm or more and 200 mm or less, 200 mm or more and 400 mm or less, 400 mm or more and 600 mm, 600 mm or more and 800 mm or less, or 800 mm or more and 1,000 mm or less.

[0038] The form of the coated fuel is not particularly limited and may be a form appropriately determined by those skilled in the art according to the fuel production method and the like. ​​​​​​In coated fuels, the flammable material is covered with a flammable film, which improves handling compared to fuels that are not covered with a flammable film. For example, handling is improved by preventing flammable material from adhering to and contaminating the furnace when it is fed into the furnace, and by making transportation easier.

[0041] The applications of coated fuels are not particularly limited and can be applied to a wide range of general fuel uses. Specific examples of such applications include boiler fuel, cooking fuel, and fire starters.

[0042] Furthermore, if the raw materials for the flammable film or flammable substance are waste generated in the manufacturing process of various manufacturing industries, the coating fuel containing the flammable film and flammable substance may be RPF (Refuse derived paper and plastics densified fuel) or SRF (Solid recovered fuel).

[0043] The method for manufacturing coated fuel is not particularly limited and can be determined as appropriate by those skilled in the art. From the viewpoint of effective utilization of waste, it is preferable to manufacture coated fuel using waste generated in the manufacturing processes of various manufacturing industries as raw materials, and it is more preferable to manufacture coated fuel using waste generated in the manufacturing process of capsule coatings as raw materials.

[0044] <Method for manufacturing coated fuel> This embodiment provides, as a second embodiment, a method for manufacturing a coated fuel provided in the first embodiment, comprising the steps of: recovering waste containing one or more selected from the group consisting of gelatin and polysaccharides, generated during the manufacturing process of the coating of the capsule; and covering the combustible material containing the waste with the combustible film. The form of the coated fuel provided in the first embodiment also applies to the second embodiment.

[0045] <Waste collection process> The method of this embodiment includes a step of recovering waste containing one or more selected from the group consisting of gelatin and polysaccharides, which is generated during the manufacturing process of the capsule coating. In addition to one or more selected from the group consisting of gelatin and polysaccharides, the waste may further contain one or more selected from the group consisting of sludge, plastic, glycerin, sorbitol, and water. The step of recovering waste containing one or more selected from the group consisting of gelatin and polysaccharides may be a step of recovering waste containing one or more selected from the group consisting of gelatin and polysaccharides, as well as one or more selected from the group consisting of sludge, plastic, glycerin, sorbitol, and water.

[0046] Waste containing gelatin, polysaccharides, sludge, plastic, glycerin, sorbitol, or water may be recovered at any stage in the manufacture of the capsule coating, for example, through the following processes: Waste containing gelatin, polysaccharides, glycerin, sorbitol, or water can be recovered from waste derived from the solution (for example, the solution remaining in the container used to prepare the solution) generated in the step of preparing the capsule coating solution before curing. Waste containing gelatin, polysaccharides, glycerin, sorbitol, or water can also be recovered from the die-cut sheets generated in the step of die-cutting the capsule coating sheets. Furthermore, waste containing sludge can be recovered by dewatering the wastewater generated from the capsule coating manufacturing equipment.

[0047] The recovered waste can be used as a raw material for a combustible substance contained in a coated fuel provided in a second embodiment. The method of this embodiment may further include a step of preparing a combustible substance containing the recovered waste.

[0048] <Process of covering combustible materials, including waste, with the above-mentioned combustible film> The method of this embodiment includes the step of covering combustible materials, including waste, with a combustible film.

[0049] The method of covering a flammable substance with a flammable film is not particularly limited, and any method is acceptable as long as the flammable substance, preferably all surfaces of the flammable substance, are covered with the flammable film. For example, the flammable substance may be covered by filling it into a bag-shaped flammable film and sealing the opening of the bag-shaped flammable film, or by coating the flammable substance with a resin before curing and then curing the resin. Alternatively, the flammable substance may be covered by wrapping it in a sheet-shaped flammable film and then heat-sealing the edges of the sheet-shaped flammable film. If the flammable substance is liquid, it is preferable to fill it into a bag-shaped flammable film and seal the opening of the bag-shaped flammable film. If the flammable substance is solid, the flammable substance may be molded into a desired shape before covering it with the flammable film. The method of this embodiment may include a step of molding the flammable substance before the step of covering it with the flammable film. The process of molding the flammable material may include a step of crushing the flammable material, a step of pulverizing the flammable material, or a step of melting part or all of the flammable material. The method of melting can be appropriately determined by a person skilled in the art, and may be, for example, melting by a water bath. When the entire flammable material is melted, after melting, the flammable material may be covered with a flammable film in accordance with the above method for when the flammable material is liquid. Alternatively, the method of this embodiment may include a step of molding the flammable material after the step of covering with a flammable film, for example, melting the flammable material covered with a flammable film. When the flammable material is solid, melting it after covering it with a flammable film can prevent damage to the flammable film by the flammable material. Furthermore, the method of this embodiment may include a step of molding the flammable material both before and after the step of covering with a flammable film. For example, a solid flammable material may be crushed, covered with a flammable film, and then the flammable material covered with the flammable film may be melted. Note that "crushing" means roughly breaking it down, while "pulverizing" means breaking it down more finely.

[0050] The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples. [Examples]

[0051] <Manufacturing of coated fuels> The solidified gelatin with a moisture content of 30%, a by-product of the capsule coating manufacturing process, was crushed and pulverized. This was then filled into a 40mm x 60mm polyvinyl chloride (3g) bag, its opening was sealed, and the gelatin was melted by a water bath to produce the coated fuel. A photograph of the obtained coated fuel is shown in Figure 1.

[0052] <Measurement of heat generation> The gelatin contained in the coating fuel manufactured as described above was measured for its calorific value according to the adiabatic calorimeter method conforming to JIS Z7302-2 (1999), and the polyvinyl chloride bag was measured for its calorific value according to the Japanese Industrial Standard JIS Z7302-2 (1999). As a result, the calorific values ​​of gelatin and the polyvinyl chloride bag were 19.678 MJ / kg and 46.055 MJ / kg, respectively. The calorific value of gelatin was calculated per unit of dry mass. This calorific value represents the calorific value that functions as a fuel.

[0053] <Filling Test 1> Multiple bags without gussets were prepared, consisting of a 50 μm thick polyethylene base layered with a 15 μm thick nylon base layer on the outside. Using a filling device (manufactured by Orihiro Co., Ltd., product name "On-pack2030"), each of the above bags was filled with either (1) approximately 50 kg of gelatin with a moisture content of 39.8%, (2) approximately 50 kg of carrageenan and starch with a moisture content of 67.3% and 15 L of water at 80°C, or (3) a mixture of approximately 20 kg of gelatin with a moisture content of 39.8% and approximately 20 kg of carrageenan and starch with a moisture content of 67.3% and 9 L of water at 80°C, in 300 g or 1 kg portions to produce coated fuel. The 300g samples (1) to (3) were each filled into 150mm x 158mm bags, and the 1kg samples (1) to (3) were each filled into 150mm x 265mm bags. The samples (1) to (3) were pumped into the bags using a rotary pump (manufactured by Nakakin Co., Ltd.) and filled. As a result, it was confirmed that all samples could be filled without any problems.

[0054] <Filling Test 2> The calorific value of the coated fuels filled with 300g of each of the samples (1) to (3) was measured. The results showed that the coated fuel filled with sample (1) had a calorific value of 12.65 MJ / kg, the coated fuel filled with sample (2) had a calorific value of 4.43 MJ / kg, and the coated fuel filled with sample (3) had a calorific value of 4.43 MJ / kg. The coated fuel filled with sample (1) was measured according to the Japanese Industrial Standard JIS Z7302-2 (1999), and the coated fuels filled with samples (2) and (3) were measured according to the adiabatic calorimeter method conforming to JIS Z7302-2 (1999). When measuring the calorific value of the coated fuels filled with samples (2) and (3), the calorific value was measured on a portion of the coated fuel that was cut and removed. [Industrial applicability]

[0055] The coated fuel of the present invention has industrial applicability as a fuel for boilers, a fuel for cooking, and an ignition agent, etc. Furthermore, the method for producing the coated fuel of the present invention has industrial applicability as a method for recycling waste, etc.

Claims

1. A coated fuel comprising a flammable film and a flammable substance covered by the flammable film, wherein the flammable substance comprises one or more selected from the group consisting of gelatin and polysaccharides.

2. The coated fuel according to claim 1, wherein the polysaccharide is one or more selected from the group consisting of starch and carrageenan.

3. The coated fuel according to claim 1, wherein the content of one or more selected from the group consisting of gelatin and polysaccharides is 50% by mass or more and 70% by mass or less with respect to the total amount of the combustible substance.

4. The coating fuel according to any one of claims 1 to 3, wherein one or more selected from the group consisting of gelatin and polysaccharides are waste obtained in the process of manufacturing the coating of capsules.

5. The coated fuel according to any one of claims 1 to 3, wherein the flammable film contains a resin as its main component.

6. The coated fuel according to any one of claims 1 to 3, wherein the combustible substance further comprises one or more selected from the group consisting of sludge, plastic, glycerin, sorbitol, and water.

7. The coated fuel according to claim 6, wherein one or more selected from the group consisting of sludge, plastic, glycerin, sorbitol, and water is waste obtained in the process of manufacturing the coating of the capsule.

8. A coated fuel according to any one of claims 1 to 3, used as an ignition agent.

9. The coated fuel according to any one of claims 1 to 3, wherein the coated fuel is RPF.

10. The coating fuel according to any one of claims 1 to 3, wherein the calorific value of the flammable film and the flammable substance is 10 MJ / kg or more and 100 MJ / kg or less, respectively.

11. A method for producing a coated fuel according to any one of claims 1 to 3, A process for recovering waste containing one or more substances selected from the group consisting of gelatin and polysaccharides, which is generated during the manufacturing process of capsule coatings, A method comprising the step of covering the combustible material, including the waste, with the combustible film.

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