Fluid bed drying of bone char

Journal Article · Mon Jun 01 04:00:00 EDT 1987 · Sugar J.; (United States)

OSTI ID:5982003

Merle, J P; Bates, L H; Zemanek, L A

By providing 160 square feet of continuous fluid bed drying capacity, the authors have made it possible to utilize the waste heat in hot air from our Herreshoff air-cooled char coolers. Formerly this hot air was discarded by exhausting it to atmosphere. Now it is used as the fluidizing medium in fluidized-bed drying conveyors to partially dry char. This removes some of the moisture which otherwise would have to be evaporated in the furnace. We found that: good fluid bed dryer performance depends on uniform feed rate and uniform moisture to the dryers and to steady flow of hot, fluidizing air; that natural gas consumption was reduced the first full year dryers were in service; that fluidizing has not caused increased adsorbent loss through attrition. At current natural gas prices, annual savings are about $80,000 per year from reduced gas consumption.

• Research Organization: California and Hawaiian Sugar Co.
• OSTI ID: 5982003
• Journal Information: Sugar J.; (United States), Journal Name: Sugar J.; (United States) Vol. 50:1; ISSN SUJOA
• 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
ACCOUNTING
ADSORBENTS
AGRICULTURE
AIR FLOW
CHARS
COOLING SYSTEMS
DRYERS
DRYING
EFFICIENCY
ENERGY ACCOUNTING
ENERGY ANALYSIS
ENERGY EFFICIENCY
ENERGY RECOVERY
ENERGY SOURCES
ENERGY SYSTEMS
ENERGY TRANSFER
EVAPORATION
EXHAUST GASES
FLUID FLOW
FLUIDIZED BEDS
FLUIDS
FOOD INDUSTRY
FOSSIL FUELS
FUEL GAS
FUELS
GAS FLOW
GAS FUELS
GASEOUS WASTES
GASES
HEAT RECOVERY
HEAT TRANSFER
INDUSTRY
LOSSES
MANAGEMENT
MOISTURE
NATURAL GAS
PERFORMANCE
PHASE TRANSFORMATIONS
PROCESSING
PYROLYSIS PRODUCTS
RECOVERY
THERMODYNAMICS
VOLUME
WASTE HEAT UTILIZATION
WASTE MANAGEMENT
WASTE PROCESSING
WASTE PRODUCT UTILIZATION
WASTES