System for dry scrubbing of flue gas
Patent
·
OSTI ID:6457470
A flue gas dry scrubbing system achieves higher sulfur dioxide removal efficiency with a better utilization of alkali reagent chemicals as well as increased dry product recovery performance using a combination of spray drying with an alkali reagent slurry and with a recycled stream comprising a mixture of unreacted alkali, sulfite and sulfate reaction products and flyash which directly contacts the sulfur dioxide-containing flue gas. Preferably the recycled mixture contacts the flue gas in the spray dryer. The invention utilizes a splitting method and a splitter apparatus wherein the particle product powder is separated into two fractions for recycling and for product disposal. The rate of splitting is fully adjustable over a wide range.
- Assignee:
- Peabody Process Systems, Inc.
- Patent Number(s):
- US 4446109
- OSTI ID:
- 6457470
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320305 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
42 ENGINEERING
424000* -- Engineering-- Pollution Control Equipment-- (1980-1989)
AEROSOL WASTES
ASHES
CHALCOGENIDES
DESIGN
DRY SCRUBBERS
DRYING
EFFICIENCY
EQUIPMENT
FLUE GAS
FLY ASH
GASEOUS WASTES
HYDROGEN COMPOUNDS
HYDROXIDES
MANAGEMENT
MATERIALS RECOVERY
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
POLLUTION CONTROL EQUIPMENT
PROCESSING
PURIFICATION
RECOVERY
RECYCLING
REMOVAL
RESIDUES
SCRUBBERS
SCRUBBING
SPRAY DRYING
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
WASTE MANAGEMENT
WASTE PROCESSING
WASTE PRODUCT UTILIZATION
WASTES
320305 -- Energy Conservation
Consumption
& Utilization-- Industrial & Agricultural Processes-- Industrial Waste Management
42 ENGINEERING
424000* -- Engineering-- Pollution Control Equipment-- (1980-1989)
AEROSOL WASTES
ASHES
CHALCOGENIDES
DESIGN
DRY SCRUBBERS
DRYING
EFFICIENCY
EQUIPMENT
FLUE GAS
FLY ASH
GASEOUS WASTES
HYDROGEN COMPOUNDS
HYDROXIDES
MANAGEMENT
MATERIALS RECOVERY
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
POLLUTION CONTROL EQUIPMENT
PROCESSING
PURIFICATION
RECOVERY
RECYCLING
REMOVAL
RESIDUES
SCRUBBERS
SCRUBBING
SPRAY DRYING
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
WASTE MANAGEMENT
WASTE PROCESSING
WASTE PRODUCT UTILIZATION
WASTES