Pelletizing and briquetting of combustible organic-waste materials using binders produced by liquefaction of biomass

• US 6,506,223 B2
• Filed: 03/08/2001
• Issued: 01/14/2003
• Est. Priority Date: 12/05/1997
• Status: Expired due to Fees

• Current Assignee: Waste Technology Transfer, Inc.
• Original Assignee: Waste Technology Transfer, Inc.
• Inventors: White, Donald H.
• Primary Examiner(s): MEDLEY, MARGARET B
• Application Number:
  US09/802,253
• Publication Number:
  US 20010013197A1
• Time in Patent Office: 677 Days
• Field of Search: 445/93, 445/52, 445/64, 445/53, 445/67, 445/69, 445/51, 445/78, 445/96
• US Class Current: 44/551
• CPC Class Codes: C10L 5/14 with organic binders

Abstract

A fuel pellet is produced by the combination of organic waste material with a binder obtained by direct liquefaction and/or fast pyrolysis of biomass material. Direct liquefaction and fast pyrolysis are carried out according to known liquefaction processes. The liquefied bio-binder base is mixed with additives, if desired, such as petroleum asphalt and cross-linking agents, in order to modify its characteristics to meet specific needs of particular applications, and the resulting mixture is mixed with organic-waste material preheated to 100° C. or more and allowed to react at about 150-200° C. Combustible extenders and fillers, reinforcing fibers, and cross-linking agents may be mixed with the organic material or the bio-binder base to provide additional specific properties to the mixture. The resulting well mixed mass is then pelletized or otherwise molded in conventional equipment.

Claims

1. A process for producing a biomass fuel product from organic-waste material comprising the following steps:

(a) preparing a bio-binder base using a liquefied bio-binder obtained from liquefaction of biomass in the absence of oxygen;

(b) blending the bio-binder base with an organic-waste material at a temperature between 60 and 260°

C. to produce a bonding reaction between the bio-binder base and the organic-waste material, thereby yielding a substantially uniform blend; and

(c) molding the blend to produce a solid-fuel product;

wherein the bio-binder base constitutes at least about three weight percent of the solid-fuel product.

2. The process of claim 1, wherein said organic-waste material includes a bituminous waste.

3. The process of claim 1, wherein said organic-waste material includes a cellulosic constituent.

4. The process of claim 1, wherein a fast pyrolysis tar is added to the bio-binder base.

5. The process of claim 1, wherein a petroleum asphalt is added to the bio-binder base.

6. The process of claim 1, wherein a liquid extender is added to the bio-binder base.

7. The process of claim 6, wherein said liquid extender includes a fluid catalytic cracker oil.

8. The process of claim 1, further comprising the step of adding a cross-linking agent to the bio-binder base prior to carrying out step (b).

9. The process of claim 1, wherein said organic-waste material includes a component selected from the group consisting of bituminous-waste material, cellulosic material, rubber material, waste organic sludges, or mixtures thereof.

10. The process of claim 1, further comprising the step of adding combustible reinforcing fibers to the organic-waste material prior to carrying out step (b), wherein said combustible reinforcing fibers are selected from the group consisting of natural polymeric fibers, synthetic polymeric fibers, and mixtures thereof.

11. The process of claim 1, wherein step (b) includes spraying the bio-binder base on the organic-waste material.

12. A solid-fuel product produced by the process of claim 1.

13. A solid-fuel product produced by the process of claim 2.

14. A solid-fuel product produced by the process of claim 3.

15. A solid-fuel product produced by the process of claim 4.

16. A solid-fuel product produced by the process of claim 5.

17. A solid-fuel product produced by the process of claim 6.

18. A solid-fuel product produced by the process of claim 8.

19. A solid-fuel product produced by the process of claim 9.

20. A solid-fuel product produced by the process of claim 10.

21. A solid-fuel product comprising:

(a) a bio-binder base obtained from liquefaction of biomass material in the absence of oxygen; and

(b) an organic-waste material;

wherein the bio-binder base is at least about three weight percent of the solid-fuel product.

22. The solid-fuel product of claim 21, wherein said organic-waste material includes bituminous waste.

23. The solid-fuel product of claim 21, wherein said organic-waste material includes a cellulosic constituent.

24. The solid-fuel product of claim 21, further comprising a fast pyrolysis tar.

25. The solid-fuel product of claim 21, further comprising a petroleum asphalt.

26. The solid-fuel product of claim 21, further comprising a liquid extender.

27. The solid-fuel product of claim 26, wherein said liquid extender comprises a fluid catalytic cracker oil.

28. The solid-fuel product of claim 21, further comprising a cross-linking agent.

29. The solid-fuel product of claim 21, wherein said organic-waste material includes a component selected from the group consisting of bituminous-waste material, lignocellulosic material, rubber material, waste organic sludges, or mixtures thereof.

30. The solid-fuel product of claim 21, further comprising combustible reinforcing fibers selected from the group consisting of natural polymeric fibers, synthetic polymeric fibers, and mixtures thereof.