Method of removing sulfur dioxide from flue gases

Patent · Tue Jan 24 04:00:00 EST 1978

OSTI ID:6495746

Pessel, L

The sulfur dioxide containing flue gases are passed through a gas scrubber containing an aqueous solution of a metal salt which can be reduced by sulfur dioxide from a high valence state to a lower valence state. This oxidizes the sulfur dioxide to either sulfur trioxide or sulfuric acid which dissolves in the solution. The sulfur compound-containing solution is removed from the first gas scrubber and placed in a regeneration gas scrubber through which air is passed. The oxygen in the air oxidizes the reduced metal salt and thereby regenerates the solution to its original composition. The regenerated solution is then recycled to the first gas scrubber where further removal of sulfur dioxide from the flue gas occurs.

• Assignee: American Electronic Labs.,Inc.
• Patent Number(s): US 4070441
• OSTI ID: 6495746
• 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)
CHEMICAL REACTIONS
DESIGN
DESULFURIZATION
EQUIPMENT
FLUE GAS
GASEOUS WASTES
LIQUID WASTES
OPERATION
POLLUTION CONTROL EQUIPMENT
RECYCLING
SCRUBBERS
WASTES