Air pollution control process

Patent · Mon Apr 02 23:00:00 EST 1979

OSTI ID:6077390

Gogineni, M R; Rader, P C; Roczniak, W R

Gases containing SO/sub 2/ from a furnace are contacted in the scrubbing zone of a scrubber with an aqueous scrubbing medium containing Ca(OH)/sub 2/ whereby sulfites are formed. The Ca(OH)/sub 2/ additive is at least partially the Ca(OH)/sub 2/ sludge produced in the manufacture of acetylene from CaC/sub 2/. This sludge contains constituents which retard or inhibit the oxidation of sulfite to thereby reduce the possibility of sulfate scaling in the system.

• Assignee: Combustion Engineering, Inc.
• Patent Number(s): US 4147755
• OSTI ID: 6077390
• Country of Publication: United States
• Language: English

Related Subjects

20 FOSSIL-FUELED POWER PLANTS
200202* -- Fossil-Fueled Power Plants-- Waste Management-- Noxious Gas & Particulate Emissions
42 ENGINEERING
424000 -- Engineering-- Pollution Control Equipment-- (1980-1989)
AIR POLLUTION CONTROL
ALKALINE EARTH METAL COMPOUNDS
CALCIUM COMPOUNDS
CALCIUM HYDROXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
DESIGN
DESULFURIZATION
EQUIPMENT
FLUE GAS
FOSSIL-FUEL POWER PLANTS
GASEOUS WASTES
HYDROGEN COMPOUNDS
HYDROXIDES
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
POLLUTION CONTROL EQUIPMENT
POWER PLANTS
SCRUBBERS
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
THERMAL POWER PLANTS
WASTES