JP2010270279A - Pellet for fuel - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide pellets for fuel suitably used as a solid fuel, which are produced by using only reusable and recyclable (biodegradable) natural materials, by adjusting the materials (blending ratios or the like) and setting production conditions (temperature or the like). <P>SOLUTION: The pellets for fuel are obtained by molding a raw material powder, and contain a main raw material powder comprising wooden flour as a main material, a subsidiary raw material powder comprising a powder of Japanese cedar leaves and mixed with the raw material powder, and a binder comprising granular or powdery tannin, which is mixed with the main raw material powder and the subsidiary raw material powder. The pellets for fuel are obtained by integrally molding a mixed raw material, obtained by mixing the main raw material powder, the subsidiary raw material powder and the binder, into a nearly spherical shape. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a fuel pellet produced by combining raw material powder made of waste such as wood powder and cow dung with a binder.

  Conventionally, as this type of technology, for example, there is a technology described in Patent Document 1.

  Patent Document 1 relates to a wood powder pellet containing a biodegradable resin as a binder, and a resin-containing wood powder pellet that makes it possible to recycle sawdust and wood pieces generated at a sawmill or a wood product processing plant as a molding material in the factory. Disclosed (see summary).

  Patent Document 1 discloses that sawdust and wood pieces produced in a sawmill or wood processing factory are crushed and dried to such an extent that the wood pieces are not long and have a diameter of several millimeters or less. Is pulverized with a pulverizer to a particle size of 0.2 mm or less, preferably 0.1 mm or less to obtain wood powder, and the obtained wood powder and biodegradable resin are uniformly mixed, preferably a nonionic surfactant And a cross-linking agent are added to obtain pellets in which wood flour is bound with a biodegradable resin in a pellet machine (summary). As a result, it is said that there is an effect that it is possible to easily and technically and economically recycle sawdust and wood pieces generated at a sawmill and a wood product processing plant as a molding material in the factory (paragraph 0018). .

JP 2003-119391 A

  However, the technique described in Patent Document 1 can recycle sawdust and wood pieces generated during processing of wood as a low-cost molding material that does not easily pollute the environment in a sawmill or a wood product processing plant. The only problem is to obtain technical means (the problem to be solved by the invention), and it is not a problem until the pellets are suitably used as solid fuel. In other words, the technique described in Patent Document 1 may not be able to fully exhibit the function (heat amount, combustion efficiency, etc.) as a solid fuel. Moreover, the technique described in Patent Document 1 is not intended for a residue (dust, combustion ash, etc.) generated after combustion of the pellet. That is, it does not consider the processing of the residue generated after combustion, and there is a possibility that labor is required for the processing operation of the residue.

  Therefore, the present invention is suitable as a solid fuel by using only natural materials that can be recycled and circulated (biodegradable), and adjusting the material (mixing ratio, etc.), manufacturing conditions (temperature, etc.), etc. It is an issue to provide pellets that can be used in the future.

  The fuel pellet according to claim 1 is a fuel pellet formed by molding raw material powder, and is a main raw material powder made of wood powder as a main material, and cedar leaf powder mixed with the raw material powder. And a binder made of granular or powdery tannin mixed with the main raw material powder and the auxiliary raw material powder. This fuel pellet is formed by forming a raw material powder made of wood powder obtained by integrally forming a mixed material obtained by mixing the main raw material powder, the auxiliary raw material powder and the binder into a substantially spherical shape.

  The fuel pellet according to claim 2 is a fuel pellet formed by forming raw material powder, and is mixed with the raw material powder composed of granular or powdery cow dung as a main material, and the granular material or And a binder composed of powdered tannin. This fuel pellet is formed by integrally molding a mixed material obtained by mixing the raw material powder and the binder into a substantially spherical shape.

  In the fuel pellet according to claim 1, the raw material powder composed of the main raw material powder and the auxiliary raw material powder is combined and integrated by mixing a binder (binder). Therefore, since the binder (binder) is a tannin particle or powder, the raw material powders are firmly bonded to each other to maintain a predetermined shape, and the tannin itself has a high combustion calorie and the raw material powder itself. Replenish fuel calories. In particular, by mixing secondary raw material powder made of cedar leaf powder as waste that has little use at present, the main raw material can be used effectively due to the high burned calories of cedar leaf while effectively utilizing waste. Combustion calories of wood powder and fuel calories of tannin as a binder can greatly increase the combustion calories of the entire fuel pellet, and can be suitably used as a solid fuel.

  The pellets for fuel according to claim 2 are formed from cow dung, which has no practical application at present, as raw material powder, mixed with a binder and molded into a predetermined shape. Therefore, since the binder (binder) is a tannin particle or powder, the raw material powders are firmly bonded to each other to maintain a predetermined shape, and the tannin itself has a high combustion calorie and the raw material powder itself. Replenish fuel calories. In particular, by using raw material powder consisting of powder or granules of cow dung as waste that has little use at present, as a main raw material or main material, high combustion calories that cow dung has while using waste effectively Thus, combined with the fuel calories of tannin as a binder, the combustion calories of the entire fuel pellet can be significantly increased and can be suitably used as a solid fuel.

FIG. 1 is an explanatory view schematically showing a combined structure of fuel pellets according to Embodiment 1 of the present invention. FIG. 2 is an explanatory view schematically showing a combined structure of fuel pellets according to Embodiment 2 of the present invention.

  Hereinafter, modes for carrying out the present invention (hereinafter referred to as embodiments) will be described. Throughout each embodiment, the same members, elements, or parts are denoted by the same reference numerals, and the description thereof is omitted.

Embodiment 1
The fuel pellet according to Embodiment 1 is a fuel pellet formed by molding raw material powder containing wood powder mainly as construction waste material. Specifically, the fuel pellet according to the first embodiment includes a main raw material powder 1 made of wood powder as a main material, and an auxiliary raw material powder 2 made of cedar leaf powder mixed with the raw material powder. And a binder 3 made of granular or powdery tannin mixed with the main raw material powder and the auxiliary raw material powder. This fuel pellet is formed by forming a raw material powder made of wood powder obtained by integrally molding a mixed material obtained by mixing the main raw material powder 1, the auxiliary raw material powder 2 and the binder 3 into a substantially spherical shape. At this time, the main raw material powder 1 is combined and integrated in a state including the auxiliary raw material powder 2, and has a certain shape via the binder 3. The main raw material powder 1, the auxiliary raw material powder 2 and the binder 3 are blended at a predetermined ratio and manufactured under predetermined conditions.

  In the fuel pellet according to Embodiment 1, the raw material powder composed of the main raw material powder and the auxiliary raw material powder is combined and integrated with each other by mixing a binder (binder). Therefore, since the binder (binder) is a tannin particle or powder, the raw material powders are firmly bonded to each other to maintain a predetermined shape, and the tannin itself has a high combustion calorie and the raw material powder itself. Replenish fuel calories. In particular, by mixing secondary raw material powder made of cedar leaf powder as waste that has little use at present, the main raw material can be used effectively due to the high burned calories of cedar leaf while effectively utilizing waste. Combustion calories of wood powder and fuel calories of tannin as a binder can greatly increase the combustion calories of the entire fuel pellet, and can be suitably used as a solid fuel.

Embodiment 2
The fuel pellet according to Embodiment 2 is a fuel pellet formed by molding raw material powder mainly containing cow dung as waste. Specifically, the fuel pellet according to the second embodiment includes a raw material powder 11 made of granular or powdered cow dung as a main material and a combination made of granular or powdered tannin mixed with the raw material powder. Agent 3 is included. This fuel pellet is formed by integrally molding a mixed material obtained by mixing the raw material powder 11 and the binder 3 into a substantially spherical shape. At this time, the raw material powder 11 is combined and integrated, and forms a certain shape via the binder 3. In addition, the raw material powder 11 and the binder 3 are mix | blended by the predetermined ratio, and are manufactured on predetermined conditions.

  The fuel pellets according to the second embodiment are formed from cow dung, which has little use at present, as raw material powder, mixed with a binder and molded into a predetermined shape. Therefore, since the binder (binder) is a tannin particle or powder, the raw material powders are firmly bonded to each other to maintain a predetermined shape, and the tannin itself has a high combustion calorie and the raw material powder itself. Replenish fuel calories. In particular, by using raw material powder consisting of powder or granules of cow dung as waste that has little use at present, as a main raw material or main material, high combustion calories that cow dung has while using waste effectively Thus, combined with the fuel calories of tannin as a binder, the combustion calories of the entire fuel pellet can be significantly increased and can be suitably used as a solid fuel.

  The test results conducted on the pellets of the present invention will be described. The total calorific value in the blend of wood and cedar leaves as pellets according to the present invention is 20604 {4922} when N = 1 and 20802 {4969} when N = 2. In addition, the test was based on “total calorific value: JIS Z 7302-2: 1999 waste solidified fuel—part 2: calorific value test method calorimeter Shimadzu-Kenken automatic cylinder calorimeter CA / 4AJ”.

The test contents are summarized as follows.
Test date: May 15, 2009 Test period: Nagoya Institute of Chemical Substances Evaluation and Research Reception Date: May 7, 2009 Reception No. 322-09-0110
Sample: Wood + cedar leaf blend material Test item and method Total calorific value: JIS Z 7302-2: 1999 Solid waste fuel-Part 2: Calorific value test method Calorimeter Shimadzu-Kanken automatic cylinder calorimeter CA -According to 4AJ.
Test results Sample: Wood + cedar leaf blend material Total calorific value:
N = 1 20604 {4922}
N = 2 20802 {4969}
* Values are converted to anhydrous base

  According to the fuel pellet of the present invention, since the raw powder and the binder are filled in the hemispherical outer shell by a special manufacturing method, the whole has a spherical two-layer structure, which is a conventional short rod shape. Compared with fuel pellets, no residue (dust) is produced, while the burned calories can be dramatically improved. Moreover, since the whole becomes spherical, it is easy to supply automatically, and the surface area can be increased. The diameter is preferably about 7.5 mm.

  Moreover, when the calorie burn (calorie calorie) by the fuel pellet filled with the cedar flour of the present invention as an auxiliary material was measured, it was about 4000 kcal in the past, but it is 4900 kcal or more in the present invention, compared with the conventional. The amount of heat increased by more than 20 percent.

1 Main raw material powder 2 Secondary raw material powder 3 Binder 11 Raw material powder (cow manure)

Claims (2)

A fuel pellet formed by molding raw material powder,
Main raw material powder consisting of wood flour as the main material,
An auxiliary raw material powder made of cedar leaf powder mixed with the raw material powder;
A binder composed of granular or powdery tannins, mixed with the main raw material powder and auxiliary raw material powder,
A fuel pellet comprising a mixed material obtained by mixing the main raw material powder, the auxiliary raw material powder, and a binder, which is integrally formed into a substantially spherical shape. A fuel pellet formed by molding raw material powder,
Raw material powder consisting of granular or powdered cow dung as the main material,
A binder composed of granular or powdered tannin mixed with the raw material powder,
A fuel pellet formed by integrally molding a mixed material obtained by mixing the raw material powder and a binder into a substantially spherical shape.

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