(WO/1998/009121) IMPROVED CYCLONIC DRYER

(WO/1998/009121) IMPROVED CYCLONIC DRYER

I claim: 1. A cyclone dryer comprising an outer cylinder having an airstream orifice and a center axis, an inner cylinder mounted proximate said outer cylinder and said center axis and having a smaller diameter than said outer cylinder, said inner cylinder further having a plurality of apertures, a cone-shaped chamber attached proximate lower portions of said outer cylinder and said inner cylinder, said cone-shaped chamber, said outer cylinder, and said inner cylinder defining an annular air chamber, said cone-shaped chamber and said inner cylinder defining a cyclone cavity, and an exhaust assembly attached proximate said inner cylinder and said outer cylinder, and in fluid communication with said cavity.

2. The cyclone dryer of claim 1, wherein said inner cylinder further comprises a plurality of deflectors mounted proximate said apertures.

3. The cyclone dryer of claim 1, wherein said inner cylinder further comprises a plurality of ribs mounted proximate said apertures.

4. The cyclone dryer of claim 1, wherein said inner cylinder further comprises a plurality of vanes mounted proximate said apertures.

5. The cyclone dryer of claim 1, wherein said inner cylinder further comprises a plurality of deflectors mounted proximate said apertures, a plurality of ribs mounted proximate said apertures, and a plurality of vanes mounted proximate said apertures.

6. The cyclone dryer of claim 1, wherein said annular air chamber is adapted for an incoming air and material stream having a velocity of between 3,000 and 6, 000 feet per minute.

7. The cyclone dryer of claim 1, wherein said annular air chamber is adapted for an incoming air and material stream having a flow of between 5,000 and 6,000 standard cubic feet per minute and a velocity of up to 6,000 feet per minute.

8. The cyclone dryer of claim 1, wherein said annular air chamber is adapted for an incoming airstream having an incoming pressure of between 10 and 30 inches of water.

9. The cyclone dryer of claim 1, wherein said annular air chamber is adapted for an incoming air and material stream having a flow of between 4,000 and 12,000 standard cubic feet per minute.

10. A cyclone dryer comprising an outer cylinder having an airstream orifice and a center axis, an inner cylinder mounted proximate said outer cylinder and said center axis and having a smaller diameter than said outer cylinder, said inner cylinder further having at least one aperture, a cone-shaped chamber attached proximate lower portions of said outer cylinder and said inner cylinder, said cone-shaped chamber, said outer cylinder, and said inner cylinder defining an annular air chamber, said cone-shaped chamber and said inner cylinder defining a cyclone cavity, and an exhaust assembly attached proximate said inner cylinder and said outer cylinder, and in fluid communication with said cavity.

11. The cyclone dryer of claim 10, wherein said inner cylinder further comprises a deflector mounted proximate said at least one aperture.

12. The cyclone dryer of claim 10, wherein said inner cylinder further comprises a rib mounted proximate said at least one aperture.

13. The cyclone dryer of claim 10, wherein said inner cylinder further comprises a vane mounted proximate said at least one aperture.

14. The cyclone dryer of claim 10, wherein said inner cylinder further comprises a deflector, a rib and a vane mounted proximate said at least one aperture.

15. The cyclone dryer of claim 10, wherein said annular air chamber is adapted for an incoming air and material stream having a velocity of up to 6,000 feet per minute.

16. The cyclone dryer of claim 10, wherein said annular air chamber is adapted for an incoming air and material stream having a flow of between 5,000 and 6,000 standard cubic feet per minute and a velocity of up to 6,000 feet per minute.

17. The cyclone dryer of claim 10, wherein said annular air chamber is adapted for an incoming airstream having an incoming pressure of between 10 and 30 inches of water.

18. The cyclone dryer of claim 10, wherein said annular air chamber is adapted for an incoming air and material stream having a flow of between 4,000 and 12,000 standard cubic feet per minute.

19. A method of drying wet material, comprising the steps of providing a cyclone dryer having coaxial inner and outer cylinders, a cone-shaped chamber attached proximate the lower portions of said inner and outer cylinders, and an exhaust assembly attached proximate said inner and outer cylinders, injecting an airstream including air and material into an annular air chamber of said cyclone dryer, said annular air chamber being defined by said inner and outer cylinders and said cone-shaped chamber, deflecting a portion of said airstream through an aperture in said inner cylinder to a cyclone cavity defined by said inner cylinder and cone-shaped chamber, drying said material, and exhausting the dried material and air through said exhaust assembly.

20. The method of claim 19 further comprising the steps of spinning said air and material in said annular air stream tangentially to the center axis of said annular air chamber, building a layer of spinning material, and funneling a portion of said layer of spinning material through said aperture.

21. The method of claim 19, further comprising the steps of directing a portion of said airstream upward in said cyclone chamber proximate said aperture causing turbulence in said cyclone chamber.

22. The method of claim 19, further comprising the step of creating an irregular boundary between downward and upward vortices of spinning air and material.

23. The method of claim 19 further comprising the step of injecting said airstream of air and material into said annular air chamber at a pressure in a range of about 10 to 30 inches of water.

24. The method of claim 19 further comprising the step of injecting said airstream of air and material into said annular air chamber at a flow rate in a range of about 4,000 to 12,000 standard cubic feet per minute.

25. The method of claim 19 further comprising the step of injecting said airstream of air and material into said annular air chamber at a velocity of up to 6,000 feet per minute.

PATENTSCOPE®

Related Links

E-Newsletters