Emerging Technologies

This section discusses the design considerations for emerging technologies including molten salt oxidation, molten metal reactions, molten glass, plasma systems, and corona destruction.

Molten Salt Oxidation

Molten salt technology is an old technology. The process combines combustible wastes and air in a molten salt batch (which can be a single component such as sodium carbonate or a mixture) within a molten salt reactor, usually constructed of ceramic or steel. Typical temperatures are 1500-1900°F and several seconds of residence time for the gas phase.

An attractive feature is the heating value of the fuel which should be sufficient to maintain the salt medium in the molten state. Consequently, this technology is best applied to combustible liquid and solid wastes, rather than gaseous wastes, as the latter are usually too dilute. Another attractive aspect is the neutralization of acidic species, such as HCl and SO2, which form from Cl- or S-containing wastes.

Molten Metal Reactions

Much higher temperatures are possible for a molten metal bath (primarily iron), up to 3000°F. This technology works best for wastes that are low in oxygen, leading to an offgas composed primarily of CO and H2. A molten metal bath requires large heat input by induction; the resulting

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