Claims
- 1. In a heat-exchange apparatus, the combination comprising:
- (a) a central high temperature combustion zone,
- (b) a vertical wall having a generally closed curve configuration surrounding said zone and made principally of a plurality of refractory, corrosion-resistant blocks, said wall having a first plurality of portions which comprise curved element-holding wall portions in which the blocks are of unitary construction and are disposed in contiguous end-to-end relation in a plurality of rows, with blocks in the rows being in staggard relation to blocks in other rows, to altogether define the curved element-holding wall portion, and in which a substantial plurality of said blocks are perforated therethrough interspersed with a second plurality of portions which are unperforated, said first and second pluralities of portions forming a substantially continuous structures,
- (c) a plurality of heat-exchange sections disposed outwardly of said wall but in contiguity therewith, each section being located at a corresponding one of said first plurality of portions in which said blocks are perforated, each section including an outer gas-permeable wall member which cooperates with said one perforated portion disposed inwardly thereof to retain a plurality of heat-exchange elements which exert considerable pressure laterally on said one perforated portion and on said outer wall member, said corresponding perforated portion being constructed to have its convex side facing and in contact with said elements and its concave side facing said zone, said perforations being dimensioned to prevent said heat-exchange elements from passing through them under the force of pressurized gas passing through said section, with the perforations in the unitary blocks extending between and connecting opposite said sides of said perforated wall portion between and forming gas conduits between said high temperature combustion zone and a said heat-exchange section, and
- (d) means coupled to said section for bringing purified or unpurified effluents to or from said section.
- 2. The combination according to claim 1 wherein said wall is substantially circular and the blocks of said first plurality are laid next to one another in a number of adjacent horizontal rows.
- 3. The combination according to claim 1 wherein the perforations of the blocks of said first plurality are a plurality of passageways extending from the front to the back of each such block.
- 4. The combination according to claim 3 wherein said passageways of each block constitute about 30-40% of the volume thereof and are substantially horizontal.
- 5. The combination according to claim 1 wherein each block of said first plurality has a ridge on one side and a groove on the other whereby adjacent ones of said blocks can mate with one another.
- 6. The combination according to claim 1 wherein said circular wall has substantially uniform thickness but the thickness of the wall at said first plurality of portions is made up solely by the front-to back dimensions of a single brick whereas the thickness of the wall at said second plurality of portions is made up of at least two horizontally displaced but abutting vertical sets of refractory bricks.
- 7. The combination according to claim 1 wherein the outer side of said wall portions and said heat exchange sections are sheathed in metal.
- 8. In heat-exchange apparatus having a generally centrally disposed high temperature combustion zone surrounded by an enclosure having spaced portions made of gas impermeable refractory material, the combination comprising:
- (c) a plurality of heat-exchange sections disposed outwardly of but contiguity with said enclosure at the spaces thereof between said said gas-impermeable portions, each section including an inner retaining wall and a gas-permeable outer retaining wall for holding a plurality of discrete heat-exchange elements piled on one another which exert considerable lateral pressure on said inner and outer walls, each of said inner retaining walls comprising a plurality of adjacent perforated corrosion-resistant refractory blocks which comprise curved element-holding wall portions disposed generally closed curve configuration, wherein the blocks are of unitary construction and are disposed in contiguous end-to-end relation in a plurality of rows, with blocks in the rows being in staggard relation to blocks in other rows, to altogether define the curved element-holding wall portion, whose concave side faces said zone and whose convex side faces and contacts said elements, the perforations in said blocks extending between and connecting opposite said sides of said curved element-holding wall portions between and forming gas conduits between said high temperature combustion zone and a said heat-exchange section, and being dimensioned to prevent said elements from passing through them under the force of pressurized gas passing through said section, and
- (d) means coupled to said sections for bringing purified or unpurified effluents to or from said sections.
- 9. In heat exchange apparatus according to claim 8, wherein said refractory blocks have mating, substantially vertical portions which coopertes in resisting the lateral thrust exerted thereupon by said heat-exchange elements.
- 10. The combination according to claim 1, and with the said perforations of said blocks located substantially within said borders of the blocks in non-traversing relation with said borders.
- 11. The combination according to claim 8, with the said perforations of said blocks located substantially within said borders of the blocks in non-traversing relation with said borders.
Parent Case Info
This application is a continuation of application Ser. No. 196,590, filed Oct. 14, 1980 abandoned.
US Referenced Citations (3)
Continuations (1)
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Number |
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196590 |
Oct 1980 |
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