SOLID FUEL

• US 20140082997A1
• Filed: 09/17/2010
• Published: 03/27/2014
• Est. Priority Date: 09/17/2010
• Status: Active Grant

• Current Assignee: Creative Co., Ltd.
• Original Assignee: Creative Co., Ltd.
• Inventors: Kiyama, Michihiro, Yamamoto, Masayuki
• Granted Patent: US 9,663,737 B2
• Time in Patent Office: Days
• US Class Current: 44/535
• CPC Class Codes: C10L 2200/0484 Vegetable or animal oils
• CPC Class Codes: C10L 2250/04 Additive or component is a polymer
• CPC Class Codes: C10L 5/14 with organic binders
• CPC Class Codes: C10L 5/363 Pellets or granulates
• CPC Class Codes: C10L 5/365 Logs
• CPC Class Codes: C10L 5/40 essentially based on materials of non-mineral origin
• CPC Class Codes: C10L 5/403 on paper and paper waste
• CPC Class Codes: C10L 5/442 Wood or forestry waste
• CPC Class Codes: C10L 5/445 Agricultural waste, e.g. corn crops, grass clippings, nut shells or oil pressing residues
• CPC Class Codes: Y02E 50/10 Biofuels, e.g. bio-diesel
• CPC Class Codes: Y02E 50/30 Fuel from waste, e.g. synthetic alcohol or diesel

Abstract

To provide a solid fuel which uses waste wood, used paper, a binder, a form retaining agent and a caloric augmentation agent in a balanced manner, has a stable calorific value, and suppresses the production of carbon dioxide. A solid fuel which is formed from a mixture of wood pieces having a size of 1 to 50 mm, paper pieces having a size of 1 to 50 mm, a binder, a form retaining agent and a caloric augmentation agent, wherein the mixture contains the wood pieces and the paper/natural fiber pieces in a total amount of 15 to 45 parts by weight and the binder, the form retaining agent and the caloric augmentation agent in a total amount of 55 to 85 parts by weight, has a weight ratio of the wood pieces to the paper pieces of 20:80 to 80:20, and is molded.

Claims

1. A solid fuel which is formed from a mixture of wood pieces having a size of 1 to 50 mm (component A), paper pieces having a size of 1 to 50 mm (component B), a binder (component C-1), a form retaining agent (component C-2) and a caloric augmentation agent (component D), wherein the total amount of the components A and B is 15 to 45 parts by weight and the total amount of the components C-1, C-2 and D is 55 to 85 parts by weight based on 100 parts by weight of the mixture, the weight ratio of the component A to the component B is 20:

80 to 80;

20, and the mixture is compression molded.

2. The solid fuel according to claim 1, wherein the total amount of the components C-1 and C-2 is 25 to 60 parts by weight based on 100 parts by weight of the mixture.

3. The solid fuel according to claim 1, wherein the amount of the component D is 15 to 60 parts by weight based on 100 parts by weight of the mixture.

4. The solid fuel according to claim 1, wherein the weight ratio of the component C-1 to the component C-2 is 6:

4 to 8;

2.

5. The solid fuel according to claim 1, wherein the weight ratio of the component A to the component B is 25:

75 to 75;

25.

6. The solid fuel according to claim 1, wherein the binder (component C-1) is starch derived from sea alga.

7. The solid fuel according to claim 1, wherein the form retaining agent (component C-2) is natural rubber.

8. The solid fuel according to claim 1, wherein the caloric augmentation agent is a vegetable oil-containing substance.

9. The solid fuel according to claim 1 having an average size of 10 to 100 cm³ each.

10. The solid fuel according to claim 1 which is prismatic or cylindrical in shape.

11. The solid fuel according to claim 1 having an apparent specific gravity of 0.3 to 0.6 g/cm³.

12. The solid fuel according to claim 1 having a calorific value of 20 to 30 MJ/kg.

13. The solid fuel according to claim 1 which is used for thermal power generation.