IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0553696
(2000-04-21)
|
발명자
/ 주소 |
|
대리인 / 주소 |
Townsend & Townsend & Crew, LLP
|
인용정보 |
피인용 횟수 :
10 인용 특허 :
34 |
초록
▼
A compact capacitively coupled electrode structure for use in a gas plasma reactor/generator is disclosed. The electrode structure comprises a parallel plate type anode and cathode spaced to define a gas flow path or volume therebetween. A plurality of electrically conductive fin elements are interp
A compact capacitively coupled electrode structure for use in a gas plasma reactor/generator is disclosed. The electrode structure comprises a parallel plate type anode and cathode spaced to define a gas flow path or volume therebetween. A plurality of electrically conductive fin elements are interposed in the space between the anode and cathode. The fin elements substantially increase the ratio of electrode surface area to volume, and subdivide the gas flow path or volume, thereby substantially increasing the efficiency of plasma gas processing that is possible over a broad range of operating parameters, without substantially increasing the spacing between the anode and cathode. Static or closed operation is also disclosed. Also disclosed is a multi-anode/multi-cathode electrode assembly embodying the basic electrode structure and a highly efficient and compact gas plasma reactor/generator employing the assembly.
대표청구항
▼
A compact capacitively coupled electrode structure for use in a gas plasma reactor/generator is disclosed. The electrode structure comprises a parallel plate type anode and cathode spaced to define a gas flow path or volume therebetween. A plurality of electrically conductive fin elements are interp
A compact capacitively coupled electrode structure for use in a gas plasma reactor/generator is disclosed. The electrode structure comprises a parallel plate type anode and cathode spaced to define a gas flow path or volume therebetween. A plurality of electrically conductive fin elements are interposed in the space between the anode and cathode. The fin elements substantially increase the ratio of electrode surface area to volume, and subdivide the gas flow path or volume, thereby substantially increasing the efficiency of plasma gas processing that is possible over a broad range of operating parameters, without substantially increasing the spacing between the anode and cathode. Static or closed operation is also disclosed. Also disclosed is a multi-anode/multi-cathode electrode assembly embodying the basic electrode structure and a highly efficient and compact gas plasma reactor/generator employing the assembly. to the spout. 2. The combination according to claim 1, wherein the vessel is a rectangular parallelepiped with a greater length and a lesser length, the horizontal axis of rotation being parallel to the greater length, and is either offset outside the vessel or is positioned at its upper part. 3. The combination according to claim 1, wherein the angle between the first position and second position is between 30° and 90°. 4. The combination according to claim 1, wherein at least one end part of the fixed trough and of the mobile spout have a circular section and are connected by said connection means articulated in rotation about the axis of rotation and sealed against liquid metal. 5. Connection device for connecting an outlet hole in a wall of a rotatable vessel for treatment of liquid metal with a fixed trough for receiving liquid metal from the vessel and which has an horizontal axis, the vessel having a horizontal axis of rotation which is substantially coincident with the horizontal axis of the trough, the connection device comprising: a mobile spout extending outwardly from the outlet hole and having a horizontal axis coincident with the horizontal axis of the vessel, and terminating at an end opposite to the outlet hole and having a circular section; an adapter flange secured to the end of the mobile spout centered over the horizontal axis of rotation and comprising a circular seal bearing perpendicular to said axis; a connection flange constructed and arranged to be secured to an end of the fixed trough centered over the horizontal axis of rotation and comprising a circular seal bearing, perpendicular to said axis facing and co-operating with the bearing of the adapter flange; at least one seal resistant to heat and liquid metal, positioned between the adapter flange bearing and the connection flange bearing; and a clamp device optionally supported by a fixed part, constructed and arranged to adjust clamping of the connection flange and the adapter flange relative to one another, and to ensure sealing of a connection between the mobile spout and the fixed trough, while allowing said flanges to pivot relative to one another. 6. Device according to claim 5, wherein the flanges comprise a centering device for their centering relative to one another. 7. Device according to claim 6, wherein the centering device comprises on one of the flanges a cylindrical projection which slide fits into a corresponding housing positioned on the other flange. 8. Device according to claim 7, wherein one seal bearing is located at the end of the cylindrical projection and another seal bearing is located in the bottom part of housing so that the two seal bearings face one another. 9. Device according to claim 7, further comprising two specific projections of flanges, a seal bearing being placed at the end of each one, arranged so that the two seal bearings face one another. 10. Device according to claim 5, further comprising two seals, one on each bearing. 11. Device according to claim 5, wherein the flanges are formed of steel or refractory cast iron. 12. Device according to claim 5, wherein the adjustable clamp device comprises screw tie rods supported firstly by one or more fixed support parts, and secondly by one of said flanges, via elastic parts, nuts being used to adjust the clamping force. 13. Device according to claim 5, wherein the adjustable clamp device comprises a projection on one of said flanges, a ring flange and clamp adjusting means. 14. Device according to claim 13, wherein the clamp adjusting means comprises bolts and belleville washers. 15. Device according to claim 5, wherein the seals are graphite based. 16. A method for treating molten metal in a vessel comprising a wall having a passage hole therethrough for supplying, discharging or emptying the liquid metal, said passage being extended by a mobile spout integral with the vessel, comprising the steps of: sealing the spout to the trough; introducing
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