Dual temperature dual desulfurization

Patent · Mon Nov 01 23:00:00 EST 1982

OSTI ID:6876592

Erickson, D C

A fuel gas is desulfurized while hot by contact with a molten alkali salt. The salt is regenerated for further use by contact with a recirculating gas stream. The H/sub 2/S and COS picked up by the recirculating gas stream is scrubbed at low temperature in an aqueous alkaline salt scrub system such as hot potash. H/sub 2/S regenerated from the low temperature alkaline scrub system is subsequently converted to sulfur. By combining both high temperature and low temperature alkali scrubbing in a single dual temperature dual alkali (DTDA) process, the best advantages of both scrub techniques are retained whereas the serious disadvantages of molten salt scrubbing are eliminated.

• Assignee: EDB-83-032149
• Patent Number(s): US 4357308
• OSTI ID: 6876592
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
090110* -- Hydrocarbon Fuels-- Properties-- (1979-1989)
10 SYNTHETIC FUELS
ALKALI METAL COMPOUNDS
CARBON COMPOUNDS
CARBONATES
CHEMICAL REACTIONS
CIRCULATING SYSTEMS
DESULFURIZATION
FLUIDS
FUEL GAS
FUELS
GAS FUELS
GASES
HYDROGEN COMPOUNDS
HYDROXIDES
MOLTEN SALTS
OXYGEN COMPOUNDS
POTASSIUM CARBONATES
POTASSIUM COMPOUNDS
REGENERATION
SALTS
SCRUBBING
SODIUM COMPOUNDS
SODIUM HYDROXIDES