Process of selectively desulfurizing gases

Patent · Tue Oct 27 04:00:00 EST 1981

OSTI ID:5945952

Doerges, A; Kempf, G; Schlauer, J

In a process of selectively desulfurizing gases which contain hydrogen sulfide and carbon dioxide comprising scrubbing the gases with an aqueous potassium carbonate solution under superatmospheric pressure and at temperatures of about 100* C., regenerating the laden scrubbing solution and recycling the regenerated scrubbing solution, the improvement wherein 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 co2 and h2s in the gases to be purified, the laden scrubbing liquor is subsequently regenerated by being stripped with a gas in which a co2 partial pressure above 0.2 bar is maintained, and the so regenerated scrubbing solution is recycled.

• Assignee: Metallgesellschaft Ag (Germany, Federal Republic of)
• Patent Number(s): US 4297330
• OSTI ID: 5945952
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
ALKALI METAL COMPOUNDS
AQUEOUS SOLUTIONS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CARBONATES
CHALCOGENIDES
CHEMICAL REACTIONS
COAL GASIFICATION
DESULFURIZATION
DISPERSIONS
EXHAUST GASES
FLUE GAS
FLUIDS
GASEOUS WASTES
GASES
GASIFICATION
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
MIXTURES
OXIDES
OXYGEN COMPOUNDS
POTASSIUM CARBONATES
POTASSIUM COMPOUNDS
RECYCLING
REGENERATION
SCRUBBING
SOLUTIONS
SULFIDES
SULFUR COMPOUNDS
THERMOCHEMICAL PROCESSES
WASTES