Process for the removal of H/sub 2/S and CO/sub 2/ from gaseous streams. [Patents]

Patent · Tue May 23 00:00:00 EDT 1978

OSTI ID:7091344

Winkler, H J.S.

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 N-(2-hydroxyethyl) ethylene diamine triacetic acid in a CO/sub 2/ selective solvent. 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 simultaneous regeneration of the solvent and the Fe(III) chelate.

• Assignee: Shell Oil Co.
• Patent Number(s): US 4091073
• OSTI ID: 7091344
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
424000* -- Engineering-- Pollution Control Equipment-- (1980-1989)
AIR POLLUTION CONTROL
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHELATES
CHEMICAL REACTIONS
COMPLEXES
DECARBONIZATION
DESULFURIZATION
GASEOUS WASTES
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
INDUSTRIAL WASTES
IRON COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
REMOVAL
SULFIDES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
WASTES