APPARATUS AND PROCESS FOR CONVERTING BIOMASS FEED MATERIALS INTO REUSABLE CARBONACEOUS AND HYDROCARBON PRODUCTS

• US 20090007484A1
• Filed: 09/15/2008
• Published: 01/08/2009
• Est. Priority Date: 02/23/2007
• Status: Abandoned Application

• Current Assignee: David G. Smith
• Original Assignee: David G. Smith
• Inventors: Smith, David G.
• Application Number:
  US12/210,561
• Publication Number:
  US 20090007484A1
• Time in Patent Office: Days
• US Class Current: 44/606
• CPC Class Codes: C10B 47/44 with conveyor-screws
• CPC Class Codes: C10B 53/02 of cellulose-containing material production of pyroligneous acid C10C5/00
• CPC Class Codes: C10G 1/02 by distillation
• CPC Class Codes: Y02E 50/10 Biofuels, e.g. bio-diesel
• CPC Class Codes: Y02P 20/145 the feedstock being materials of biological origin

Abstract

Apparatus and process for producing carbonaceous materials and/or hydrocarbon materials from a biomass feed composition, the apparatus including a feed port; a thermal decomposition assembly including a ribbonchannel reactor which includes an inner heated hollow cylinder; an outer heated hollow cylinder, one of which is rotatable with respect to the other, both heated hollow cylinders providing heat to the feed composition to convert it to a vapor fraction and a solid residue fraction; low height flighting mounted with respect to the inner and outer heated hollow cylinders to move the feed composition through the thermal decomposition assembly; at least one vapor port for removing the vapor fraction containing a hydrocarbon material; and at least one solids port for removing the solid fraction, containing a carbonaceous material.

Claims

1. A process for converting a biomass feed composition to a product comprising a carbonaceous material and a hydrocarbon material in a ribbonchannel reactor, wherein the reactor comprises a first heated cylindrical surface and a second heated cylindrical surface spaced away from the first heated cylindrical surface, and wherein the feed composition comprises one or more biomass materials decomposable into the product, the process comprising:

feeding the biomass feed composition in the reactor;

rotating the first heated surface relative to the second heated surface;

forming between the first heated surface and the second heated surface a substantially spiral ribbon comprising the biomass feed composition; and

heating the substantially spiral ribbon to generate a vapor comprising the hydrocarbon material and a solid comprising the carbonaceous material.

2. The process of claim 1 wherein the ribbonchannel reactor further comprises a plurality of low flighting mounted on the first heated surface, wherein the first heated surface, the second heated surface and the low flighting define a substantially spiral ribbonchannel, and wherein the flowing form in the ribbonchannel a substantially spiral ribbon comprising the feed material.

3. The process of claim 1 further comprising removing and condensing at least a portion of the vapor.

4. The process of claim 1 further comprising drying the biomass feed composition in a drying apparatus prior to the feeding.

5. The process of claim 4 wherein the drying apparatus heats the biomass feed composition to a temperature in the range from about 250°

F. (121°

C.) to about 300°

F. (149°

C.).

6. The process of claim 4 wherein drying apparatus comminutes and/or macerates the biomass feed material.

7. The process of claim 4 wherein the drying apparatus comprises a flash dryer.

8. The process of claim 1 further comprising adding a catalyst to the biomass feed composition at one or more of the feeding, rotating, forming and heating.

9. The process of claim 8 wherein the catalyst comprises fly ash.

10. A process for converting a biomass feed composition to a product comprising a carbonaceous material in a ribbonchannel reactor, wherein the reactor comprises a first heated cylindrical surface and a second heated cylindrical surface spaced away from the first heated cylindrical surface, and wherein the feed composition comprises one or more biomass materials decomposable into the product, the process comprising:

feeding the biomass feed composition in the reactor;

rotating the first heated surface relative to the second heated surface;

forming between the first heated surface and the second heated surface a substantially spiral ribbon comprising the biomass feed composition; and

heating the substantially spiral ribbon to convert the biomass feed material into a solid comprising the carbonaceous material.

11. The process of claim 10 wherein the ribbonchannel reactor further comprises a plurality of low flighting mounted on the first heated surface, wherein the first heated surface, the second heated surface and the low flighting define a substantially spiral ribbonchannel, and wherein the flowing form in the ribbonchannel a substantially spiral ribbon comprising the feed material.

12. The process of claim 10 further comprising drying the biomass feed composition in a drying apparatus prior to the feeding.

13. The process of claim 12 wherein the drying apparatus heats the biomass feed composition to a temperature in the range from about 250°

F. (121°

C.) to about 300°

F. (149°

C.).

14. The process of claim 12 wherein drying apparatus comminutes and/or macerates the biomass feed material.

15. The process of claim 12 wherein the drying apparatus comprises a flash dryer.

16. The process of claim 10 wherein the carbonaceous material is substantially free of carbohydrate and water.

17. An apparatus for producing hydrocarbon materials from a biomass feed composition, comprising:

a feed port;

a drying apparatus for drying the biomass feed composition;

a thermal decomposition assembly comprising

a ribbonchannel reactor, the ribbonchannel reactor comprising;

(a) an inner heated hollow cylinder; and

(b) an outer heated hollow cylinder, wherein the inner heated cylinder is substantially concentric and rotatable with respect to the outer heated hollow cylinder, and wherein both heated hollow cylinders provide heat for increasing temperature of the feed composition to convert the feed composition into (i) a vapor fraction and (ii) a solid residue fraction;

(c) low height flighting mounted with respect to the inner heated hollow cylinder and the outer heated hollow cylinder adapted to move the feed composition towards a distal portion of the thermal decomposition assembly;

(d) at least one vapor port for removing the vapor fraction; and

(e) at least one solids port at the distal portion of the thermal decomposition assembly for removing the solid fraction.

18. The apparatus of claim 17 further comprising means for collecting and for condensing at least a portion of the vapor fraction.

19. The apparatus of claim 18 wherein the means for condensing include a condenser operated at a temperature in the range from about 130°

F. to about 180°

F. (about 54°

C. to about 82°

C.).

20. The apparatus of claim 17 wherein the ribbonchannel reactor comprises a single heating zone and temperature of the biomass feed composition increases as the biomass feed composition passes through the ribbonchannel reactor from the proximal portion to the distal portion.

21. The apparatus of claim 17 wherein the ribbonchannel reactor comprises at least two zones of sequentially increasing temperature and temperature of the feed composition increases as the feed composition passes through the ribbonchannel reactor from the proximal portion to the distal portion.

22. The apparatus of claim 17 wherein the drying apparatus heats the feed composition to a temperature in the range from about 250°

F. (121°

C.) to about 300°

F. (149°

C.).

23. The apparatus of claim 17 wherein the drying apparatus comprises a flash dryer.

24. The apparatus of claim 17 wherein the inner heated hollow cylinder has an outer radius, the outer heated hollow cylinder has an inner radius, and a ratio of the outer radius to the inner radius is in a range from about 0.85 to about 0.98 and wherein the low height flighting is disposed between the inner heated hollow cylinder and the outer heated hollow cylinder.

25. The apparatus of claim 17 wherein the inner heated hollow cylinder has an outer radius, the outer heated hollow cylinder has an inner radius, and the outer radius and the inner radius differ in the range from about 0.25 inch to about 1.5 inch (about 0.63 cm. to about 3.8 cm.), when the outer diameter is in the range from about 12 inches to about 36 inches (about 30.5 cm. to about 91.5 cm.) and wherein the low height flighting is disposed between the inner heated hollow cylinder and the outer heated hollow cylinder.

26. The apparatus of claim 17 wherein the low height flighting comprises a plurality of spirally oriented flights extending outwardly from an outer surface of the inner heated hollow cylinder and the flights have a substantially constant pitch in the range from about 4 in. to about 10 in.

27. The apparatus of claim 17 wherein the low height flighting comprises a plurality of spirally oriented flights extending outwardly from an outer surface of the inner heated hollow cylinder and the flights have a pitch in the range from about 10 in. to about 2 in. and the pitch decreases, within the range, from the proximal portion to the distal portion of the ribbonchannel reactor.

28. The apparatus of claim 17 wherein the ribbonchannel reactor comprises electrical resistance heating elements.

29. The apparatus of claim 17 wherein the low flighting has an operational clearance from the outer heated hollow cylinder in the range of about 0.01 inch to about 0.025 inch.

30. The apparatus of claim 17 wherein the drying apparatus comprises two or more drying chambers in series.