Process for removal of hydrogen sulfide from gas streams

Patent · Tue Feb 15 04:00:00 EST 1972

OSTI ID:6241593

Beavon, D K

It is common in the sulfur industry to extract hydrogen sulfide from process gas streams by contacting the process gas stream with an alkaline absorption solution, typically containing a solution of sodium carbonate or potassium carbonate absorbent, to form alkali hydrosulfides. The formed compounds are oxidized with a contained oxidizing agent to yield elemental sulfur. The formed elemental sulfur is generally removed as a solid phase, usually by flotation and the reduced oxidizing agent regenerated by reoxidation, usually with air, to recondition the absorption solution for reuse. Removal of oxygen from regenerative alkaline hydrogen sulfide absorption solutions before contacting the solution with a hydrogen sulfide containing process gas stream eliminates the formation of thiosulfate impurities. (8 claims)

• Assignee: TUL; EDB-81-114749
• Patent Number(s): US 3642448
• OSTI ID: 6241593
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030300* -- Natural Gas-- Drilling
Production
& Processing
ABSORPTION
ALKALI METAL COMPOUNDS
CARBON COMPOUNDS
CARBONATES
CHALCOGENIDES
ELEMENTS
ENERGY SOURCES
FLUIDS
FOSSIL FUELS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
NATURAL GAS
NONMETALS
OXIDIZERS
OXYGEN COMPOUNDS
POTASSIUM CARBONATES
POTASSIUM COMPOUNDS
PROCESSING
REMOVAL
SODIUM CARBONATES
SODIUM COMPOUNDS
SULFIDES
SULFUR
SULFUR COMPOUNDS
THIOSULFATES