Process for removal of sulfur dioxide from gases

Patent · Tue Sep 02 04:00:00 EDT 1980

OSTI ID:6943840

Gorin, E

An improvement is provided in the regeneration system of agueous regenerative processes for the removal of SO/sub 2/ from SO/sub 2/-containing gas streams which have a scrubbing system containing (1) a scrubbing zone through which a recirculating stream of sodium, potassium or ammonium thiosulfate solution continuously passes as a vehicle for the SO/sub 2/ absorbent-sodium, potassium, or ammonium carbonate-under conditions favorable to the formation of sulfite by the reaction of carbonate and SO/sub 2/ and (2) a thiosulfate generation zone in which the sulfite is converted by sulfide to thiosulfate. The improvement comprises converting in a regenerating system, the net make of thiosulfate to sulfide and carbonate by converting one portion of the thiosulfate to formate and the reacting the other portion with said formate.

• Assignee: Conoco Inc
• Patent Number(s): US T 998010
• OSTI ID: 6943840
• 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)
CARBON COMPOUNDS
CARBONATES
CHALCOGENIDES
CHEMICAL REACTIONS
DESULFURIZATION
FLUE GAS
FOSSIL-FUEL POWER PLANTS
GASEOUS WASTES
OXIDES
OXYGEN COMPOUNDS
POWER PLANTS
REMOVAL
SCRUBBING
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
THERMAL POWER PLANTS
THIOSULFATES
WASTES