| 摘要 |
<p>A method and a reactor system for melting contaminated dredged sediment to eliminate hazardous organic substances and to convert the contaminated sediment into a low leaching glass product is disclosed. Contaminated river sediment and soils consisting primarily of inorganic material and very low amounts of combustible matter are directly melted by heating to a temperature above 2200 °F (1204 °C) in which the sediment material becomes a liquid or molten mass. The liquid or molten mass can be water quenched or further processed to make products having commercial applications, such as a glassy product. In another aspect of the invention, the contaminated river sediment is dried prior to being fed into the glass furnace in order to reduce the energy requirement and furnace size. In yet another aspect of the invention, the contaminated river sediment is tested and blended with other additives before being fed into the glass furnace. By testing the contaminated river sediment and blending the river sediment with additives, problems associated with excessive melting temperatures, increased gas use, and increased furnace refractory wear can be avoided.</p> |
