Process for removing SO/sub x/ and NO/sub x/ compounds from gas streams

Patent · Tue Feb 14 04:00:00 EST 1989

OSTI ID:6162996

Hass, R H

A process is described for removing SO/sub x/ compounds from a feed gas stream and producing a purified gas stream of reduced SO/sub x/ content, which process comprises: contacting a feed gas stream containing SO/sub x/ compounds; withdrawing from step (1) a liquid stream of spent absorbent containing the absorbed SO/sub x/ compounds; regenerating the spent absorbent back to a form active for absorbing SO/sub x/ compounds; separating the products of step (3) into a liquid stream containing a regenerated absorbent and a product gas stream containing H/sub 2/S; recycling at least some of the liquid stream containing regenerated absorbent; and recovering the purified gas stream of reduced SO/sub x/ content and the product gas stream containing H/sub 2/S.

• Assignee: Union Oil Co. of Calif., Los Angeles, CA
• Patent Number(s): US 4804522
• OSTI ID: 6162996
• Country of Publication: United States
• Language: English

Related Subjects

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54 ENVIRONMENTAL SCIENCES
ABSORPTION
ADSORBENTS
ADSORPTION
AIR POLLUTION CONTROL
AQUEOUS SOLUTIONS
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
DESULFURIZATION
DISPERSIONS
GASEOUS WASTES
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
MEDIUM TEMPERATURE
MIXTURES
NITROGEN COMPOUNDS
NITROGEN OXIDES
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
REGENERATION
REMOVAL
SOLUTIONS
SORPTION
SULFIDES
SULFUR COMPOUNDS
SULFUR DIOXIDE
SULFUR OXIDES
WASTES