Disadvantages

• Residual materials are difficult to remove

• Fluid bed must be prepared and maintained

• Feed selection must prevent bed damage

• Incineration temperatures limited to 1500°F max to avoid fusing bed material

• Little experience on hazardous waste combustion

A wide range of innovative technologies such as high- and low-temperature plasmas, molten salt, molten glass and molten metals baths have merged since the passage of RCRA (Freeman 1990). Many such techniques are now in development.

Steam Drum

Process Steam

Steam Drum

Process Steam

Forced Draft Air Fan

Ash Conveyor System

FIG. 11.14.6 Circulating fluid-bed incinerator for hazardous waste.

Forced Draft Air Fan

Ash Conveyor System

FIG. 11.14.6 Circulating fluid-bed incinerator for hazardous waste.

Solid Waste

Legend

Solid Waste

^^ Pressure

^^ Temperature

DP Differential Pressure

FIG. 11.14.7 Potential sampling points for assessing incinerator performance. (Reprinted, with permission, from Dempsey and Oppelt 1993).

Fuel

^^ Pressure

^^ Temperature

DP Differential Pressure

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