Process of selectively desulfurizing gases

Patent · Tue Oct 27 04:00:00 EST 1981

OSTI ID:5281988

Schlauer, J; Kempf, G; Doerges, A

This process selectively desulfurizes gases which contain hydrogen sulfide and carbon dioxide. It is comprised of scrubbing the gases with an aqueous potassium carbonate solution under superatmospheric pressure and at temperatures of ca. 100 c. The laden scrubbing solution is regenerated and the regenerated scrubbing solution is recycled. In turn, the gases to be purified are scrubbed with an aqueous potassium carbonate solution so as to maintain a mass ratio of 1.0 to 3.0 vals (gram equivalents) of alkali in the solution per mole of CO/sub 2/ and H/sub 2/S in the gases to be purified. The laden scrubbing liquor is subsequently regenerated by being stripped with a gas in which a CO/sub 2/ partial pressure above 0.2 bar is maintained, and the regenerated scrubbing solution is recycled. 7 claims.

• Assignee: Metallges AG (Frankfurt)
• Patent Number(s): US 4297330
• OSTI ID: 5281988
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030300* -- Natural Gas-- Drilling
Production
& Processing
ALKALI METAL COMPOUNDS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBONATES
CHALCOGENIDES
CHEMICAL REACTIONS
DESULFURIZATION
FLUIDS
GASES
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
MEDIUM PRESSURE
MEDIUM TEMPERATURE
OXIDES
OXYGEN COMPOUNDS
POTASSIUM CARBONATES
POTASSIUM COMPOUNDS
RECYCLING
REGENERATION
REMOVAL
SCRUBBING
SULFIDES
SULFUR COMPOUNDS