Method of minimizing energy consumption when reducing iron oxide with reducing gases

Patent · Tue Feb 21 00:00:00 EST 1984

OSTI ID:6619384

Mathisson, G; Santen, S

Energy consumption may be minimized when reducing iron oxide with reducing gases which are at least partially re-circulated in the process and where the re-circulation gas is washed to remove the reaction product CO/sub 2/ in what is known as a CO/sub 2/ wash to enable it to be re-used, by the heat requirement necessary for regenerating the washing liquid in the CO/sub 2/ wash being entirely or partially covered by the physical heat content in top gas from the shaft furnace and/or gas leaving the sponge-iron cooler of the shaft furnace.

• Assignee: SKF Steel Engineering (Sweden)
• Patent Number(s): US 4432789
• OSTI ID: 6619384
• Resource Relation: Patent Priority Date: Priority date 2 Mar 1982, Sweden; Other Information: PAT-APPL-460499
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
CARBON DIOXIDE
REMOVAL
GASEOUS WASTES
RECYCLING
WASTE HEAT UTILIZATION
IRON OXIDES
REDUCTION
COOLING SYSTEMS
DRAFT CONTROL SYSTEMS
ENERGY CONSERVATION
ENERGY CONSUMPTION
GAS FURNACES
HEAT
REDUCING AGENTS
CARBON COMPOUNDS
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL EQUIPMENT
ENERGY
ENERGY SYSTEMS
EQUIPMENT
FLOW REGULATORS
FURNACES
IRON COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
WASTE PRODUCT UTILIZATION
WASTES
320304* - Energy Conservation
Consumption
& Utilization- Industrial & Agricultural Processes- Waste Heat Recovery & Utilization