Fluidized bed sulfur dioxide removal

Patent · Tue Jan 05 04:00:00 EST 1982

OSTI ID:5666161

Nguyen, X T

A system is disclosed for reducing the emission of sulfur particularly for high sulfur coal combustion in a fluidized bed by injecting limestone into the bed and calcining the limestone in the bed to form lime. A portion of the lime so formed is reacted with a portion of the SO2 generated in the bed, removing the excess of material containing lime so generated from the bed. Excess lime is slaked in water, then contacted with the flue gases leaving the fluid bed and containing SO2 with the lime slurry so formed thereby removing a further significant portion of the generated SO2 from the flue gas.

• Assignee: Domtar Inc (Canada)
• Patent Number(s): US 4309393
• OSTI ID: 5666161
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
CALCINATION
CHALCOGENIDES
CHEMICAL REACTIONS
DECOMPOSITION
DESULFURIZATION
DISPERSIONS
FLUE GAS
FLUIDIZED BED
GASEOUS WASTES
LIME-LIMESTONE WET SCRUBBING PROCESSES
MIXTURES
OXIDES
OXYGEN COMPOUNDS
PYROLYSIS
REMOVAL
SCRUBBING
SLURRIES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SUSPENSIONS
THERMOCHEMICAL PROCESSES
WASTES