Process and apparatus for reducing heavy metal toxicity in fly ash from solid waste incineration

Patent · Tue Dec 18 04:00:00 EST 1990

OSTI ID:5199590

Roos, C E; Quarles, R A

This patent describes a process for treating solid waste materials. It comprises: incinerating solid waste materials including at least some combustible materials to produce fuel gases including fly ash, and bottom ash, introducing a glass material into a vitrification furnace, introducing the fly ash produced by the incinerating step into the vitrification furnace, melting the glass material in the vitrification furnace to cause the fly ash to combine with the molten glass material; and discharging the combined glass material and fly ash from the vitrification furnace to produce an inert vitrified ash product.

• Assignee: National Recovery Technologies, Nashville, TN (USA)
• Patent Number(s): A; US 4977837
• Application Number: PPN: US 7-486802
• OSTI ID: 5199590
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320305* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
320604 -- Energy Conservation
Consumption
& Utilization-- Municipalities & Community Systems-- Municipal Waste Management-- (1980-)
ADDITIVES
AEROSOL WASTES
AIR POLLUTION CONTROL
ASHES
CHEMICAL REACTIONS
COMBUSTION
COMBUSTION PRODUCTS
CONTROL
EMISSION
FLY ASH
GLASS
INCINERATORS
OXIDATION
POLLUTION CONTROL
RESIDUES
SOLID WASTES
THERMOCHEMICAL PROCESSES
TOXICITY
VITRIFICATION
WASTES