Process for the removal of H/sub 2/S and CO/sub 2/ from gaseous streams

Patent · Mon Jan 10 23:00:00 EST 1983

OSTI ID:6503269

Diaz, Z

A cyclic process for the simultaneous removal of hydrogen sulfide and carbon dioxide from a variety of gas streams is disclosed. The gas stream containing the sour gases is contacted with a solution of the Fe(III) chelate of nitrilotriacetic acid in an absorbent comprising diethylene glycol monoethyl ether. The hydrogen sulfide is converted to sulfur, the CO/sub 2/ is absorbed to produce a purified gas stream, and the Fe(III) chelate is converted to the Fe(II) chelate. The process includes sulfur removal and regeneration of the absorbent and the Fe(III) chelate.

• Assignee: Shell Oil Co
• Patent Number(s): US 4368178
• OSTI ID: 6503269
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010800* -- Coal
Lignite
& Peat-- Waste Management
02 PETROLEUM
020800 -- Petroleum-- Waste Management
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
04 OIL SHALES AND TAR SANDS
040400 -- Oil Shales & Tar Sands-- Oil Production
Recovery
& Refining
ABSORPTION
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHELATES
CHEMICAL REACTIONS
COMPLEXES
DESULFURIZATION
ELEMENTS
FLUIDS
GASEOUS WASTES
GASES
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
IRON
METALS
OXIDES
OXYGEN COMPOUNDS
PURIFICATION
REMOVAL
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENTS
WASTES