Heat exchange devices for cooling the wall and refractory of a blast furnace
Abstract
Abstract The invention concerns heat exchange devices for cooling the wall and the refractory of a blast furnace. Such a device, constituting a cooling box, comprises: a closed enclosure, elongated and having a shape of revolution or substantially of revolution, this enclosure comprising an outer end and an inner end, an axial chamber defining with said enclosure an annular chamber, this axial chamber comprising an outer end and an inner end, a supply orifice for feeding a cooling liquid into the axial chamber through its outer end. and a discharge orifice for discharging the cooling liquid from the annular chamber through the outer end of the enclosed enclosure deflector means provided between the inner end of the axial chamber and the inner end of the enclosed enclosure, these deflector means being arranged so as to impart to the whole of the flow of the cooling liquid: an axial component, directed towards the inner end of the enclosed enclosure, for cooling the central part of the inner end of this enclosure, a radial component for cooling the rest of the inner end of the enclosed enclosure, an axial component directed towards the outer end of the closed enclosure for causing the return of the cooling liquid, and a tangential component for cooling the part of revolution of the closed enclosure.
Inventors
- 👤 Francois Touze
Bibliographic Details
Claims Analysis
Total Claims: 7References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-07-01 | 1983-12-31 | 1984-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-07-01 | 1987-12-31 | 1988-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-07-01 | 1991-12-31 | 1992-07-01 | $7700.00 | Window Closed / Lapsed |