Separation of gaseous components from a gaseous mixture by physical scrubbing

Patent · Tue Apr 13 04:00:00 EST 1982

OSTI ID:5156827

Ranke, G; Weiss, H

In a process for separating and obtaining as product gases at least two gaseous components from a gaseous mixture containing same by scrubbing with a physical scrubbing liquid, a higher dissolving power is exhibited for at least one of the components to be separated than for at least one other of these components. A first scrubbing liquid stream, loaded with all of the components to be separated, and a second scrubbing liquid stream, merely containing proportions of the less soluble component or components, are withdrawn from the scrubbing stage. A gaseous fraction is liberated by expansion of the first scrubbing liquid stream, freed of the more soluble component or components by treatment with the second, likewise expanded scrubbing liquid stream and withdrawn as a first product stream. The scrubbing liquid streams are finally subjected to a separation of the more soluble components as well as of residual proportions of the less soluble components, thus obtaining a second product gas, the improvement which comprises further expanding the scrubbing liquid streams to obtain a gaseous fraction prior to the separation serving for obtaining the second product gas, recompressing the thus-liberated, gaseous fraction and scrubbing the recompressed gaseous fraction with the second scrubbing liquid stream.

• Assignee: Linde Ag (Germany, Federal Republic Of)
• Patent Number(s): US 4324567
• OSTI ID: 5156827
• Country of Publication: United States
• Language: English

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ALCOHOLS
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
DRY SCRUBBERS
EQUIPMENT
FLUIDS
GASES
HYDROGEN COMPOUNDS
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HYDROXY COMPOUNDS
METHANOL
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OXIDES
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POLLUTION CONTROL EQUIPMENT
PURIFICATION
REMOVAL
SCRUBBERS
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SULFUR COMPOUNDS