Ferrous scrap preheating system emission characterization test report

Technical Report · Thu Oct 15 04:00:00 EDT 1992

OSTI ID:7000313

One way to improve economics steel-making is to preheat the scrap metal before placing into an electric arc furnace. This reduces the electric arc furnace energy requirement, thus lowering the power cost and decreasing the melting time. This study uses a free standing preheater that recirculates hot gases to can be safely removed from the scrap during preheating. The test program was conducted to evaluate potential emissions from this scrap preheater and to determine emission control equipment requirements. Two areas of concern were organics and acid gas emissions created by the oils present on the scrap and heavy metal emissions created by the heating the metal. Heavy metal emissions were evaluated for Cr, Ni, Pb, Zn, Cd. Metals were heated to between 800 and 1125 F which is the temperature expected in the preheater. Heavy metal emissions were very low in all cases except Cd. If substantial amounts of Cd. are present in the scrap, it may be necessary to limit the present temperature. It is concluded that it would not be necessary to include auxiliary emission control equipment for the preheater that is to be supplied to preheat stainless steel at the demonstration site.

• Research Organization: Surface Combustion, Inc., Maumee, OH (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: AC02-89CE40874
• OSTI ID: 7000313
• Report Number(s): DOE/CE/40874-3; ON: DE93005212
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320303 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Equipment & Processes
36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
54 ENVIRONMENTAL SCIENCES
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR POLLUTION
ALLOYS
CADMIUM
CARBON STEELS
DIOXIN
ELEMENTS
FLUIDS
FURANS
GASES
HEATING
HETEROCYCLIC COMPOUNDS
HIGH ALLOY STEELS
INDUSTRY
IRON ALLOYS
IRON BASE ALLOYS
METAL INDUSTRY
METALS
OILS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OTHER ORGANIC COMPOUNDS
PARTICLES
PARTICULATES
POLLUTION
PRODUCTION
SCRAP
SCRAP METALS
SOLID WASTES
STAINLESS STEELS
STEELS
TRANSITION ELEMENTS
VAPORS
WASTES