Effluent gas desulfurization with conversion to gypsum of large particle size

Patent · Tue May 06 00:00:00 EDT 1986

OSTI ID:5547612

Kim, B M

A method is described for removing sulfur dioxide from effluent gas which comprises contacting the gas with a slurry initially consisting essentially of water, at least one calcium compound selected from the group consisting of calcium oxide, calcium hydroxide and calcium carbonate and at least one oxidizing agent selected from the group consisting of oxygen and hydrogen peroxide, in amounts to convert the sulfur dioxide to calcium sulfate, and analyzing the slurry for content of the oxidizing agent so as to promote conversion of the sulfur dioxide to calcium sulfate of maximum crystal size.

• Assignee: General Electric Co., Schenectady, NY
• Patent Number(s): US 4587112
• OSTI ID: 5547612
• Resource Relation: Patent File Date: Filed date 20 Jun 1985
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
FLUE GAS
DESULFURIZATION
GYPSUM
PRODUCTION
REMOVAL
SULFUR DIOXIDE
AIR POLLUTION CONTROL
CALCIUM CARBONATES
CALCIUM HYDROXIDES
CALCIUM OXIDES
CALCIUM SULFATES
CRYSTAL STRUCTURE
HYDROGEN PEROXIDE
OXIDIZERS
OXYGEN
PARTICLE SIZE
QUANTITY RATIO
SLURRIES
WATER
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CARBON COMPOUNDS
CARBONATES
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
DISPERSIONS
ELEMENTS
GASEOUS WASTES
HYDROGEN COMPOUNDS
HYDROXIDES
MINERALS
MIXTURES
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PEROXIDES
POLLUTION CONTROL
SIZE
SULFATE MINERALS
SULFATES
SULFUR COMPOUNDS
SULFUR OXIDES
SUSPENSIONS
WASTES
010800* - Coal
Lignite
& Peat- Waste Management