Mixing element and static fluid mixer using same

• US 7,510,172 B2
• Filed: 02/24/2006
• Issued: 03/31/2009
• Est. Priority Date: 02/16/2004
• Status: Active Grant

• Current Assignee: Anemos Company Limited, Sony Corporation (Sony Group Corp.)
• Original Assignee: Anemos Company Limited
• Inventors: Kojima, Hisao
• Primary Examiner(s): BUSHEY, CHARLES S
• Application Number:
  US11/276,340
• Publication Number:
  US 20070205523A1
• Time in Patent Office: 1,131 Days
• Field of Search: 261/79.1, 261/79.2, 261/94, 261/113, 962/96, 963/14, 963/20, 963/24, 963/26, 366/338, 366/339, 366/340, 366/341
• US Class Current: 261/79.2
• CPC Class Codes: B01D 53/18 Absorbing units; Liquid distributors therefor B01D3/16, B01D3/26, B01D3/30 take precedence; packing elements B01J19/30, B01J19/32
• CPC Class Codes: B01F 23/232 using flow-mixing means for introducing the gases, e.g. baffles
• CPC Class Codes: B01F 25/4312 having different kinds of baffles, e.g. plates alternating with screens
• CPC Class Codes: B01F 25/43141 composed of consecutive sections of helical formed elements
• CPC Class Codes: B01F 25/4317 Profiled elements, e.g. profiled blades, bars, pillars, columns or chevrons
• CPC Class Codes: B01J 19/30 Loose or shaped packing elements, e.g. Raschig rings or Berl saddles, for pouring into the apparatus for mass or heat transfer
• CPC Class Codes: B01J 19/32 Packing elements in the form of grids or built-up elements for forming a unit or module inside the apparatus for mass or heat transfer
• CPC Class Codes: B01J 2219/30219 Disk
• CPC Class Codes: B01J 2219/30223 Cylinder
• CPC Class Codes: B01J 2219/30284 twisted
• CPC Class Codes: B01J 2219/3085 Ordered or stacked packing elements
• CPC Class Codes: B01J 2219/32244 Essentially circular apertures
• CPC Class Codes: B01J 2219/32279 Tubes or cylinders
• CPC Class Codes: B01J 2219/3322 Co-current flow
• CPC Class Codes: B01J 2219/3325 Counter-current flow

Abstract

A mixing element, which is produced at low cost, has high mixture agitation effectiveness, and is easily made large, and a static fluid mixer using the mixing element are provided. Further, a gas-liquid treatment apparatus with high treatment ability is provided. A mixing element 1 includes: a cylindrical passage tube 2 trough which fluid flows; a plurality of spiral rightward rotation type first blades 3 formed of a perforated object, which are provided in the passage tube 2; a first inner cylindrical tube 5 shaped like a cylinder and disposed inside the blades 3; a plurality of spiral rightward rotation type blades 6 provided in the inner cylindrical tube 5; and an opening 9 formed in the axial center portion of the blades 6. A static fluid mixer is formed by using at least one mixing, element 1 mentioned above.

Claims

1. A mixing element comprising:

a cylindrical passage tube through which fluid flows;

spiral first blades of rightward rotation and leftward rotation provided in said passage tube;

a first inner cylindrical tube disposed in the axial center portion of said first blades;

spiral second blades of rightward rotation and leftward rotation provided in said first inner cylindrical tube; and

a second inner cylindrical tube disposed in the axial center portion of said second blades;

wherein

said first blades and said second blades are formed of a perforated object or a porous object.

2. A mixing element according to claim 1, wherein said passage tube is shaped like cylinder.

3. A mixing element according to claim 1, wherein said first and second inner cylindrical tubes are formed of a perforated object or a porous object.

4. A mixing element according to claim 1, wherein the length of said passage tube in the axial center direction is equal to or slightly greater than the length of said first blades.

5. A mixing element according to claim 1, wherein the rotation angle of said first blades is in the range of approximately 5°

to 270°

.

6. A mixing element according to claims 1, wherein the rotation angle of said second blades is in the range of approximately 5°

to 180°

.

7. A mixing element according to claim 1, wherein said first inner cylindrical tube is disposed along all or part of the length of said first blades in the axial center direction thereof.

8. A mixing element according to claim 1, wherein said second inner cylindrical tube is disposed along all or part of the length of said second blades in the axial center direction thereof.

9. A mixing element according to claim 1, wherein the surface area of said first and second blades in total per unit volume in said passage tube is in the range of 10 m²/m³ to 300 m²/m³.

10. A mixing element according to claim 1, wherein at least two said second blades are formed per said first blade.

11. A mixing element according to claim 10, wherein a space portion is formed between the second blades, with respect to said at least two second blades.

12. A mixing element according to claim 1, wherein said second inner cylindrical tube has an opening in the axial center portion thereof.

13. A mixing element according to claim 1, wherein said mixing element is formed of rightward rotation type first blades and leftward rotation type second blades.

14. A mixing element according to claim 1, wherein said mixing element is formed of leftward rotation type first blades and rightward rotation type second blades.

15. A mixing element according to claim 1, wherein four of said mixing elements of approximately 15°

rightward rotation or leftward rotation are joined together to obtain said mixing element having a rotation angle of approximately 60°

.

16. A mixing element according to claim 1, wherein three of said mixing elements of approximately 30°

rightward rotation or leftward rotation are joined together to obtain said mixing element having a rotation angle of approximately 90°

.

17. A mixing element according to claim 1, wherein three of said mixing elements of approximately 60°

rightward rotation or leftward rotation are joined together to obtain said mixing element having a rotation angle of approximately 180°

.

18. A mixing element according to claim 1, wherein three of said mixing elements of approximately 90°

rightward rotation or leftward rotation are joined together to obtain said mixing element having a rotation angle of approximately 270°

.

19. A static fluid mixer comprising:

one or more said mixing elements according to any one of claims 1 to 18.

20. A static fluid mixer according to claim 19, wherein said mixing elements of rightward rotation and leftward rotation are alternately disposed in a cylindrical casing with spacers in between.

21. A gas-liquid contact apparatus having:

a distillation column method gas-liquid contact apparatus through which fluids flow as countercurrents; and

a mixing element disposed on said distillation column method gas-liquid contact apparatus, said mixing element comprising;

a cylindrical passage tube through which fluid flows;

spiral first blades of rightward rotation and leftward rotation provided in said passage tube;

a first inner cylindrical tube disposed in the axial center portion of said first blades;

spiral second blades of rightward rotation and leftward rotation provided in said first inner cylindrical tube; and

a second inner cylindrical tube disposed in the axial center portion of said second blades,

wherein,

said first blades and said second blades are formed of a perforated object or a porous object.

24. A gas-liquid contact apparatus according to any one of claims 21 to 23, wherein one or more spacers, in which a perforated board shaped like a cone whose top has been cut off is provided, are disposed in said gas-liquid contact apparatus.

22. A gas-liquid contact apparatus comprising:

a stripping column method gas-liquid contact apparatus through which fluids flow as countercurrents; and

a mixing element disposed on said stripping column method gas-liquid contact apparatus, said mixing element comprising;

a cylindrical passage tube through which fluid flows;

spiral first blades of rightward rotation and leftward rotation provided in said passage tube;

a first inner cylindrical tube disposed in the axial center portion of said first blades;

spiral second blades of rightward rotation and leftward rotation provided in said first inner cylindrical tube; and

a second inner cylindrical tube disposed in the axial center portion of said second blades,

wherein,

said first blades and said second blades are formed of a perforated object or a porous object.

23. A gas-liquid contact apparatus comprising:

an absorption column method gas-liquid contact apparatus through which fluids flow concurrently; and

a mixing element disposed on said absorption column method gas-liquid contact apparatus, said mixing element comprising;

a cylindrical passage tube through which fluid flows;

spiral first blades of rightward rotation and leftward rotation provided in said passage tube;

a first inner cylindrical tube disposed in the axial center portion of said first blades;

spiral second blades of rightward rotation and leftward rotation provided in said first inner cylindrical tube; and

a second inner cylindrical tube disposed in the axial center portion of said second blades,

wherein,

said first blades and said second blades are formed of a perforated object or a porous object.