Reactor having improved heat transfer
A catalytic reactor or heat exchanger includes a monolith defining a plurality of leaves, the monolith having a generally annular cross-section. The monolith is disposed within a generally cylindrical outer tube, and around a corrugated inner tube. The reactor includes a device for urging the monolith radially outward, so as to maintain contact between the monolith and the outer tube. Such device may include a coned washer, or it may be defined by a folded flap that is integral with the inner tube. In either case, the reactor compensates for metal creep, and virtually insures continued contact between the monolith and the outer tube.
1. A reactor comprising a plurality of metallic leaves, the leaves having surfaces, the reactor defining a plurality of paths for gas flow, the paths being generally parallel to the surfaces of the leaves, the leaves defining a generally annular cross-section as viewed in a direction of said paths for gas flow, wherein the leaves are inserted between an outer metallic tube and an inner tube, and wherein the leaves occupy an annular space between the outer tube and the inner tube, the reactor further comprising means for urging the leaves radially outward so that some of the leaves are in contact with the outer tube.
2. The reactor of claim 1 , wherein the urging means comprise a coned washer positioned to push against the inner tube.
3. The reactor of claim 2 , wherein the reactor includes an axial post, and wherein the washer engages a groove formed in the post.
4. The reactor of claim 1 , wherein the inner tube is integrally formed with a folded flap, and wherein the urging means comprises said flap.
5. A reactor comprising: a) a generally cylindrical outer tube, and a generally cylindrical inner tube, b) a monolith including a plurality of leaves, the monolith having an annular cross-section and being disposed between the outer tube and the inner tube, and c) means for urging the leaves radially outward, so as to maintain contact between the leaves and the outer tube.
6. The reactor of claim 5 , further comprising a post disposed along a longitudinal axis of the inner tube, the post having at least one groove, and wherein the urging means are in engagement with said groove.
7. The reactor of claim 5 , wherein the urging means comprise a coned washer positioned to push against the inner tube.
8. The reactor of claim 5 , wherein the inner tube is integrally formed with a folded flap, and wherein the urging means comprises said flap.
9. The reactor of claim 7 , wherein there are at least two coned washers engaging the inner tube, in a vicinity of a top and bottom portion of the monolith.
10. A reactor comprising: a) a generally cylindrical outer tube, and b) a monolith including a plurality of leaves, the monolith having an annular cross-section and being disposed within the outer tube and in a vicinity of an inner surface of the outer tube, the reactor further comprising a corrugated inner tube, the monolith being located between the inner tube and the outer tube.
11. The reactor of claim 10 , the reactor further comprising means for urging the leaves radially outward, so as to maintain contact between the leaves and the outer tube.
12. A reactor comprising: a) a generally cylindrical outer tube, and b) a monolith including a plurality of leaves, the monolith having an annular cross-section and being disposed within the outer tube and in a vicinity of an inner surface of the outer tube, the reactor further comprising a post disposed along a longitudinal axis of the outer tube.
13. The reactor of claim 12 , wherein there is a space between the monolith and the post.
14. A reactor comprising: a) a generally cylindrical outer tube, and b) a monolith including a plurality of leaves, the monolith having an annular cross-section and being disposed within the outer tube and in a vicinity of an inner surface of the outer tube, the reactor further comprising means for urging the leaves radially outward, so as to maintain contact between the leaves and the outer tube.
15. The reactor of claim 14 , wherein the urging means comprise a coned washer positioned to urge the leaves radially outward.
16. The reactor of claim 14 , further comprising an inner tube integrally formed with a folded flap, and wherein the urging means comprises said flap.
17. The reactor of claim 15 , wherein there are at least two coned washers in a vicinity of a top and bottom portion of the monolith.