Thermally tolerant support structure for a catalytic combustion catalyst
IPC분류정보
국가/구분
United States(US) Patent
등록
국제특허분류(IPC7판)
B01J-019/32
출원번호
US-0992786
(2001-11-13)
발명자
/ 주소
Barnes,John
출원인 / 주소
Kawasaki Jukogyo Kabushiki Kaisha
대리인 / 주소
Morrison & Foerster LLP
인용정보
피인용 횟수 :
3인용 특허 :
27
초록▼
The present invention provides a support structure for a catalyst disposed within an outer containment. Several unique arrangements and connections of supporting struts that form the structure provide a number of significant advantages and improvements. The support structure provides a very low dist
The present invention provides a support structure for a catalyst disposed within an outer containment. Several unique arrangements and connections of supporting struts that form the structure provide a number of significant advantages and improvements. The support structure provides a very low disturbance of gas flow while maintaining a high amount of contact support with catalyst foils. In addition to a high tolerance of thermal gradients and fewer stress concentrations, strong support in radial and axial directions is also provided.
대표청구항▼
What is claimed is: 1. A support structure for supporting a catalyst structure in a catalytic reactor, said support structure having a center and a perimeter and comprising: a plurality of struts configured to minimally obstruct flow of a gas reaction mixture, wherein said plurality of struts is co
What is claimed is: 1. A support structure for supporting a catalyst structure in a catalytic reactor, said support structure having a center and a perimeter and comprising: a plurality of struts configured to minimally obstruct flow of a gas reaction mixture, wherein said plurality of struts is configured in at least two branched segments radially arranged about the center of the support structure, wherein each branched segment comprises a primary strut with proximal and distal ends, wherein the proximal end of the primary strut is proximal to the center and the distal end extends toward the perimeter, wherein each branched segment further comprises a secondary strut with proximal and distal ends, wherein the proximal end of the secondary strut contacts the primary strut at a position between the proximal and distal ends of the primary strut, and wherein the distal end of the secondary strut extends toward the perimeter, and wherein each branched segment further comprises additional secondary struts with proximal and distal ends, wherein the additional secondary struts alternate in branched fashion in a direction from the center toward the perimeter, wherein the proximal end of each additional secondary strut contacts the previous secondary strut toward the center in the branched segment at a position between the proximal and distal ends of the previous secondary strut and the distal end of each additional secondary strut extends toward the perimeter, wherein the struts are configured such that the struts are free to thermally expand and contract as the temperature changes, and wherein the struts are configured to provide substantially uniform support with respect to a substantial portion of the catalyst structure. 2. The support structure of claim 1 wherein the distance between alternate consecutive secondary struts in a branched segment is substantially constant. 3. The support structure of claim 1 wherein at least one strut of one branched segment is parallel to at least one strut of another branched segment. 4. The support structure of claim 1 wherein the outer perimeter substantially defines a circle. 5. The support structure of claim 1 wherein alternate secondary struts are substantially parallel to each other. 6. The support structure of claim 1 wherein at least one strut includes at least one bend. 7. The support structure of claim 1 wherein at least one strut is straight. 8. The support structure of claim 1 wherein at least one secondary strut includes at least one bend. 9. The support structure of claim 1 wherein each consecutive strut is connected to the previous strut at a variable distance from the proximal end of the previous strut. 10. The support structure of claim 1 wherein each consecutive strut is connected to the previous strut at a constant distance from the proximal end of the previous strut. 11. The support structure of claim 1 wherein at least one strut includes a bend such that its distal end is substantially perpendicular to the perimeter. 12. The support structure of claim 1 wherein the center is located substantially at the center of the perimeter. 13. The support structure of claim 1 wherein the support structure comprises a hub located at the center of the support structure. 14. The support structure of claim 13, further comprising a center spindle attached to the hub. 15. The support structure of claim 14, further comprising a second support structure attached to the center spindle. 16. The support structure of claim 1 wherein at least one strut is corrugated. 17. The support structure of claim 16 wherein the at least one corrugated strut is connected to the center. 18. The support structure of claim 16 wherein the consecutive struts connected to the corrugated strut are connected with lap joints. 19. The support structure of claim 1 wherein the primary struts are connected to the center with slip joints. 20. The support structure of claim 19 wherein the proximal end each primary strut connected to the center includes at least one tongue, and wherein the center includes at least one slot adapted to receive the at least one tongue. 21. The support structure of claim 1 wherein at least one secondary strut is connected to the previous strut with a slip joint. 22. The support structure of claim 21 wherein said previous strut includes at least one slot and the proximal end of said at least one secondary strut includes at least one tongue, wherein a tongue of the at least one secondary strut is received in a slot of the previous strut. 23. The support structure of claim 1 further including an outer ring encompassing the branched segments. 24. The support structure of claim 23 wherein the outer ring includes a plurality of peaks and troughs radially arranged about the outer ring, wherein the distal ends of at least some of the struts are coupled to the outer ring at the troughs. 25. The support structure of claim 23, wherein the distal ends of at least some of the struts are coupled to the outer ring. 26. The support structure of claim 25, wherein at least some of the struts are coupled to the outer ring with a slip joint. 27. The support structure of claim 1 wherein the distal end of at least one strut includes a flange. 28. The support structure of claim 27 further including an outer ring having an expansion slot, wherein the flange is received within the expansion slot such that the at least one strut is retained yet substantially free to move in a radial direction within the expansion slot. 29. The support structure of claim 1 wherein the distal end of at least one strut includes at least two notches to form a T-end. 30. The support structure of claim 29 further including an outer ring having an expansion slot, wherein the T-end is received within the expansion slot such that the strut is retained yet substantially free to move in a radial direction within the expansion slot. 31. The support structure of claim 1 wherein the distal end of at least one strut includes a slot. 32. The support structure of claim 31 further including an outer ring passed through the slot such that the distal end is retained yet substantially free to move in a radial direction. 33. The support structure of claim 1 wherein at least one strut is connected to the center with at least a braze lug. 34. The support structure of claim 1 wherein at least one secondary strut is connected to the previous strut with at least a braze lug. 35. The support structure of claim 33 or 34 wherein the braze lug includes at least two flanges, a strut receiving portion coupled to the at least two flanges, at least two tabs coupled to the at least two flanges, and at least one tab coupled to the strut receiving portion. 36. The support structure of claim 1 wherein at least a portion of the distal ends of said plurality of struts are connected to an outer ring. 37. The support structure of claim 36 wherein the at least a portion of the distal ends are connected to the outer ring with a slip joint. 38. The support structure of claim 1 wherein at least a portion of each of the distal ends of said plurality of struts includes a flange. 39. The support structure of claim 38, further comprising an outer ring comprising expansion slots, wherein the flanges are received within the expansion slots such that they are retained yet substantially free to move in a radial direction within the expansion slots. 40. The support structure of claim 1 wherein at least a portion of each of the distal T-ends of said plurality of struts includes at least two notches to form a end. 41. The support structure of claim 40, further comprising an outer ring comprising expansion slots, wherein the T-ends are received within the expansion slots such that they are retained yet substantially free to move in a radial direction within the expansion slots. 42. A support structure according to claim 14, wherein said center spindle transfers an axial load upstream to a second support structure.
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이 특허에 인용된 특허 (27)
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