Thermal recuperator device with a facility for controlling the pressure in an upstream vessel
US4458886A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 13, 1982 |
| Grant date | Jul 10, 1984 |
| Priority date | — |
| Expiry date | Dec 13, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB22D41/015
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A thermal recuperator for heating gas supplied to a vessel from which a hot gas is discharged and which allows the pressure in the vessel to be controlled substantially without regard to the pressure drop necessary to cause the hot gas to flow through the recuperator. The invention has particular utility in the case of a metallurgical ladle provided with a ladle heater, the combustion air for which is heated in a recuperator receiving waste gas from the ladle. A conduit for the waste gas leaving the ladle is surrounded by one or more conduits for the combustion air, and an ejector fed with combustion air is arranged at the gas outlet of the waste gas conduit to accelerate the waste gases and facilitate their egress from the recuperator.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.