Process for removing sulfur dioxide from gas

Patent · Tue Jun 03 04:00:00 EDT 1980

OSTI ID:6002045

Parish, W R

There is disclosed a process for obtaining purer sodium sulfate from a mixture of solids containing sodium sulfate and sodium sulfite. The process involves contacting an aqueous slurry of the sulfate-sulfite mixture with a sulfur dioxide-containing gas under conditions which solubilize a significant amount of the sulfite as sodium bisulfite dissolved in the liquid aqueous phase. The remaining solid phase contains sodium sulfate of greater purity than in the mixture treated with sulfur dioxide. The mixture of sodium sulfate and sodium sulfite which is purified by the process may be obtained advantageously as a purge material from a process for removing sulfur dioxide from a gas stream.

• Assignee: Davy Powergas Inc
• Patent Number(s): US 4206187
• OSTI ID: 6002045
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
02 PETROLEUM
020800 -- Petroleum-- Waste Management
03 NATURAL GAS
030700 -- Natural Gas-- Waste Management
ALKALI METAL COMPOUNDS
CHALCOGENIDES
CHEMICAL REACTIONS
DESULFURIZATION
DISPERSIONS
GASEOUS WASTES
MIXTURES
OXIDES
OXYGEN COMPOUNDS
PURIFICATION
REMOVAL
SEPARATION PROCESSES
SLURRIES
SODIUM COMPOUNDS
SODIUM SULFATES
SOLIDS
SULFATES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
SUSPENSIONS
WASTES