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Method for purification of gases

Patent ·
OSTI ID:5854278
The present invention is directed to a method for selective purification of gases. The method comprises feeding an exhaust gas containing a solid impurity and a gaseous impurity to a separator. A substantial portion of the solid impurity is separated. Then, the partially-purified gas is fed to a spray dryer. That gas is sprayed with an absorption agent to separate gaseous impurities. Then, the further, partially-purified gas is fed to another separator to separate remaining solid impurity. An exhaust gas which is substantially free of solid and gaseous impurities and fly ash having a desired quality are recovered.
Assignee:
Smidth, F L and Co
Patent Number(s):
US 4301128
OSTI ID:
5854278
Country of Publication:
United States
Language:
English

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Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200202* -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
ADSORPTION
AEROSOL WASTES
ALKALINE EARTH METAL COMPOUNDS
ASHES
BOILERS
CALCIUM COMPOUNDS
CALCIUM HYDROXIDES
CHALCOGENIDES
DRYING
FLUE GAS
FLY ASH
GASEOUS WASTES
HYDROGEN COMPOUNDS
HYDROXIDES
OXIDES
OXYGEN COMPOUNDS
PRECIPITATION
PURIFICATION
RESIDUES
SEPARATION PROCESSES
SORPTION
SPRAY DRYING
SULFUR COMPOUNDS
SULFUR OXIDES
WASTES