Fluid bed heat exchanger for contaminated gas

Patent · Tue Dec 29 04:00:00 EST 1981

OSTI ID:5483864

Smith, R D

A heat exchanger is presented in which heat from a hot contaminated fluid stream is transferred to granular media of a fluid bed. Such streams can issue from, for example, manufacturing processes such as glass furnaces, and magnetohydrodynamic power plant. The hot fluid stream is used to fluidize the media; ash, slag, condensed vapors and other contaminants often found therein are deposited on the media. The bed is kept from fouling by diluting the contaminants with large quantities of media and by keeping the media of the bed highly active. Heat is transferred to the media and is subsequently transferred from the heated media to a second fluid stream either by removing the media from the bed and contacting it directly with the second fluid stream or by submerging conduits in the fluid bed and directing the second fluid stream therethrough. Where a high effectiveness for the heat exchanger is desired, the hot fluid stream is passed through two or more fluid beds in series and the media flows from fluid bed to fluid bed, countercurrent to the flow of the hot fluid stream. Contaminants can be recovered from the media, from the fluid beds and from the exhaust fluid from the fluid beds.

• Assignee: EDB-82-103133
• Patent Number(s): US 4307773
• OSTI ID: 5483864
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320304* -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Waste Heat Recovery & Utilization
CONTAMINATION
COUNTERFLOW SYSTEMS
ENERGY TRANSFER
EXHAUST GASES
FLUID FLOW
FLUIDIZED BED
FLUIDS
GASEOUS WASTES
GASES
HEAT EXCHANGERS
HEAT TRANSFER
MANAGEMENT
MATERIALS RECOVERY
POLLUTANTS
PROCESSING
RECOVERY
REMOVAL
WASTE HEAT UTILIZATION
WASTE MANAGEMENT
WASTE PROCESSING
WASTE PRODUCT UTILIZATION
WASTES