JPH1060464A - Formed charcoal and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain formed charcoal which has high strength to impact and pressure, during the combustion, and can be reused because it is resistant to form breakage, even when the charcoal fire is quenched with water, by mixing carbonized coffee bean cake, other carbonized products, saccharides and binder, forming and drying the mixture. SOLUTION: (A) Carbonized product prepared by carbonizing waste coffee bean cake, (B) carbonized products other than the component(A), (C) saccharides and (D) a binder, for example, carboxymethylcellulose, starch, polyvinyl alcohol are mixed in amounts of 40-97wt.%(A), 1-58wt.%(B), 1-10wt.%(C) and 1-5wt.%(D) based on the formed carbonized product, respectively, formed and dried. This formed charcoal is preferably produced by mixing the components A-D, formed and dried, in addition, for example, dry-distilled at 180-800 deg.C. The emission of malodor in the dry distillation can markedly be reduced during the combustion.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a charcoal comprising carbonized coffee beans as a main component and a saccharide, and a method for producing the same.

2. Description of the Related Art Molded charcoal containing carbonized coffee beans as a main component (hereinafter referred to as "molded charcoal") has been put to practical use as a fuel for camping, a fuel for barbecue, and a fuel for roasting coffee. Molded charcoal has a higher calorific value and better ignitability than charcoal, and especially contains a lot of potassium, so this potassium component can be used to remove amino acids and salts such as inosinic acid and glutamic acid contained in roasted meat. It is thought to form and make umami. Moreover, the shape and quality of molded coal are constant, and mass production is possible industrially. Furthermore, by mixing far-infrared ceramics to form charcoal, there are many merits such as the ability to enhance the far-infrared effect.

[0002] In general, molded charcoal is obtained by adding a binder,
After adding water, mixing and grinding, kneading, low-pressure molding,
It is manufactured by drying, but due to its structure, it is easily broken by tapping with fire chopsticks or sandwiching it to remove ash on the surface of the formed charcoal during burning, or easily collapsed by pouring water and extinguishing the fire There are some problems, such as not being able to be reused, and the burning of the binder in the early stage of combustion to generate odors (carboxylic acids such as formic acid and acetic acid and aldehydes such as formaldehyde and acetaldehyde). Molded charcoal has the above-mentioned problems, so that it has been difficult to use it as commercial charcoal for yakiniku, eel kabayaki, yakitori and the like.
For this reason, as such commercial-use coal, ogah coal obtained by extruding ogallite and shaking ogallite at a high temperature or natural coal (for example, Bincho charcoal) is used.

[0003]

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a molded coal which has high strength against impact and pressure during combustion, does not easily collapse even when extinguished with water, and can be reused, and its production. It is to provide the law. Another object of the present invention is to provide a coal briquette which has high strength against impact and pressure during combustion, does not easily collapse even when extinguished with water, can be reused and has a low odor, and a method for producing the same. Is the thing.

[0004]

SUMMARY OF THE INVENTION The present invention provides a carbide obtained by carbonizing coffee bean residue, a carbide other than the carbide,
It is intended to provide a formed charcoal obtained by mixing a saccharide and a binder, forming and drying. The present invention further provides a method for producing shaped coal, comprising mixing a char obtained by carbonizing coffee bean residue, a char other than the char, a saccharide, and a binder, forming and drying. The present invention also provides a charcoal obtained by carbonizing a coffee bean residue, a charcoal other than the charcoal, a saccharide and a binder, molding, drying and carbonizing. The present invention further provides a method for producing a shaped coal, comprising mixing a carbide obtained by carbonizing a coffee bean residue, a carbide other than the carbide, a saccharide, and a binder, molding, drying, and carbonizing at 180 to 800 ° C. It provides the law.

BEST MODE FOR CARRYING OUT THE INVENTION The carbonized coffee bean residue used in the present invention is a carbonized material obtained by carbonizing the residue of coffee beans remaining after extracting coffee. Usually, it is used in an amount of 40% by weight or more and 97% by weight or less based on the formed coal. Examples of the charcoal other than the charcoal of the coffee bean residue include sawdust charcoal, bark charcoal, coconut charcoal charcoal, chip charcoal, charcoal obtained by charcoalizing barley tea residue remaining after extracting barley tea (hereinafter referred to as “barley tea charcoal”), charcoal of fruit , Charcoal, etc. can be used. The carbide other than the coffee bean residue carbide is usually used in an amount of 1% by weight or more and 58% by weight or less based on the formed coal. Examples of the saccharide used in the present invention include monosaccharides, disaccharides, isomerized saccharides, starch syrup, and the like. Glucose and fructose as monosaccharides, sucrose and lactose as disaccharides are mass-produced as industrial raw materials,
Easy to get. Sugars are usually 1% by weight based on charcoal.
It is used in an amount of not less than 10% by weight and preferably not more than about 1% by weight and not more than 5% by weight. The shape may be powder or liquid.

As the binder, those usually used for this purpose, for example, carboxymethylcellulose, starch, dextrin, polyvinyl alcohol, phenol, sodium polyacrylate and the like can be used. The binder is generally used in an amount of about 1% to about 5% by weight, preferably about 1% to about 3% by weight, based on the molded coal. The molding is performed by mixing and pulverizing, for example, a coffee bean residue charcoal, a barley tea residue charcoal, charcoal, a saccharide, a binder, and an appropriate amount of water (for example, 25% to 40% by weight based on the raw material mixture) with a mixer, a fret mill, or the like. After kneading, it can be performed using a press. A molding pressure of, for example, 50 to 100 kg / cm ² can be applied. After the molding, drying is performed at room temperature or with hot air at 70 to 150 ° C. Molded coal produced in this way (hereinafter referred to as "dry coal")
Maintains its strength during combustion, and does not lose its shape even if water is extinguished by water during combustion. In the present invention, the formed coal obtained by performing dry distillation after forming and drying (hereinafter referred to as “carbonized formed coal”) generates very little odor during combustion. The carbonization temperature is preferably 180 ° C. or more and 800 ° C.
C. or lower, more preferably 250 C. or higher and 400 C. or lower. The carbonization time is usually suitably from 30 to 180 minutes. The shape and size of the formed coal of the present invention are not particularly limited, and can be appropriately manufactured according to the purpose of use of the formed coal or the burning appliance in which the formed coal is used.

[0006]

EXAMPLES Example 1 (Dry Coal) The commercial coal was produced by the following method. 59.5% by weight of charcoal of coffee beans residue, 15.0% by weight of charcoal of barley tea residue, 20.0% by weight of charcoal powder, 3.5% by weight of glucose, and carboxymethylcellulose as binder
After mixing 2.0% by weight, the mixture was molded under pressure at a molding pressure of 60 kg / cm ² , dried at 130 ° C., and dried to a diameter of 50 mm.
× A cylindrical dry-formed coal having a height of 60 mm and a hole having a diameter of 15 mm at the center was produced. Example 2 (Dry Molded Charcoal) As in Example 1, 58.6% by weight of the carbonized coffee beans residue, 14.9% by weight of the barley tea residual carbonized material, and 19.5% of the charcoal powder.
After mixing 5.0% by weight of glucose, 5.0% by weight of glucose, and 2.0% by weight of carboxymethylcellulose as a binder,
Dry formed coal was produced in the same manner as in Example 1.

Comparative Example 1 (Dry Molded Charcoal Containing No Sugars) As in Example 1, 61.7% by weight of a carbonized coffee bean residue, 15.7% by weight of a barley tea carbonized residue, and 20.6% of a charcoal powder.
After mixing 2.0% by weight of carboxymethylcellulose as a binder and 2.0% by weight of the binder, a dry molded coal was produced in the same manner as in Example 1.

Comparative Example 2 (Dry molding without binder )
Charcoal) Coffee beans residue char 61.5% by weight, barley tea residue 1
After mixing 5.0% by weight, charcoal powder 20.0% by weight, and glucose 3.5% by weight, dry formed coal was manufactured in the same manner as in Example 1. Test Example 1 The formed coals of Examples 1 and 2 and Comparative Examples 1 and 2 were put in an electric furnace, kept at a temperature of 500 ° C. for 30 minutes, burned, taken out of the electric furnace, and the cylinder was laid down. And the crushing strength of each was measured. Table 1 shows the measured values of the crushing strength during combustion together with the values of the initial crushing strength.

[0009]

Table 1 Results of crushing strength measurement 強度Example 1 Example 2 Comparative Example 1 Comparative Example 2 Glucose Yes Yes No Yes Binder Yes Yes Yes No Initial crush strength 60 kg 65 kg 40 kg 5 kg crush strength during combustion 15 kg 25 kg 3 kg 2 kg Ratio of crush strength during combustion 5 8.3 1 0.7

From Table 1, it can be seen that the crushing strength during combustion is extremely reduced in Comparative Example 1 containing no glucose, and that the initial crushing strength is extremely low in Comparative Example 2 containing no binder. On the other hand, in Examples 1 and 2 containing glucose and a binder, it can be seen that the initial crushing strength is high and the crushing strength during combustion does not decrease so much. More specifically, assuming that the relative crushing strength of the formed coal of Comparative Example 1 during combustion is 1, the relative crushing strength of the formed coal of Comparative Example 2 containing no binder is about 0.7, whereas Example 1 is not. The relative crushing strength of the formed coal is 5 and the relative crushing strength of the formed coal of Example 2 is about 8. By blending glucose and a binder, the formed coal during combustion can be subjected to external impact and pressure. It can be seen that the strength is clearly higher.

Test Example 2 The fire of the formed coal of Example 1 was extinguished with water during burning, and the dried coal was burned again, and the crushing strength was measured in the same manner as in Test Example 1. The results are shown in Table 2 together with the crushing strength of the formed coal of Example 1 (before extinguishing with water).

[0012]

[Table 2] Table 2 Crushing strength when extinguishing with water, drying and burning again ─── Example 1 Drying after extinguishing the formed coal of Example 1 with water and then drying The crushing strength during combustion 15 kg 13 kg From Table 2, the formed coal of the present invention was extinguished with water during combustion and dried. It can be seen that even when the fuel is burned again, the decrease in crushing strength during burning is extremely low.

Example 3 (Carbonized coal) The coal formed in Example 1 was heated in an electric furnace at 130.degree.
Dry distillation at a temperature of 0 ° C. for 30 minutes produced three types of carbonized molded carbon samples. Four samples were ignited with an igniting agent using a diatomaceous earth stove, and the odor during combustion was evaluated. The evaluation of the odor was based on the following criteria, and the molded coal of Example 1 was set to 5, and each was relatively evaluated and shown as an average value of the evaluations of 5 testers. Table 3 shows the results. 5: Extremely strong odor 4: Strong odor 3: Some odor 2 ... Some odor 1 ... Slight odor

[0014]

[Table 3] Odor evaluation test 乾燥 Dry molding of Example 1 Carbonized coal from Example 3 (carbonization temperature) 130 ° C 200 ° C 350 ° C Odor evaluation value 5.0 5.0 3.8 1.1 From Table 3, the odor decreases as the carbonization temperature is increased. It can be seen that the odor is reduced to about one fifth as compared with the dry coal of Example 1.

[0015]

The dry-formed coal of the present invention has a high strength against impact and pressure during combustion, and the dry-distilled coal does not generate much odor.

Claims (6)

[Claims] A molded coal obtained by mixing a carbide obtained by carbonizing a coffee bean residue, a carbide other than the carbide, a saccharide and a binder, molding and drying. 2. A carbonized material obtained by carbonizing the coffee bean residue with respect to the formed coal, comprising 40% by weight or more and 97% by weight or less,
1% to 58% by weight of a carbide other than the carbide;
1% to 10% by weight of saccharide and 1% of binder
The molded coal according to claim 1, which is mixed in an amount of from 5% by weight to 5% by weight, molded and dried. 3. A method for producing a shaped coal, comprising mixing a char obtained by carbonizing a coffee bean residue, a char other than the char, a saccharide and a binder, forming and drying. 4. A molded coal obtained by mixing a carbide obtained by carbonizing a coffee bean residue, a carbide other than the carbide, a saccharide and a binder, molding, drying and carbonizing. 5. Charcoal obtained by carbonizing the coffee bean residue with respect to the formed coal is 40% by weight or more and 97% by weight or less,
1% to 58% by weight of a carbide other than the carbide;
1% to 10% by weight of saccharide and 1% of binder
The molded coal according to claim 4, which is mixed in an amount of from 5% by weight to 5% by weight, molded, dried and carbonized. 6. A method for producing a shaped coal, comprising mixing a char obtained by carbonizing a coffee bean residue, a char other than the char, a saccharide and a binder, forming, drying, and carbonizing at 180 to 800 ° C. Law.