Process for purifying a hydrogen sulfide containing gas

Patent · Tue Feb 17 04:00:00 EST 1981

OSTI ID:6344639

Deschamps, A; Franckowiak, S; Sugier, A

Process is described for purifying a gas containing hydrogen sulfide, optionally with carbon dioxide, particularly adapted to the purification of gases of relatively low hydrogen sulfide content, e.g. not in excess of 1% of H/sub 2/S by volume. The procedure consists of contacting the gas with an absorption mass containing copper, at a temperature of from 250 to 550/sup 0/C, to absorb the hydrogen sulfide and form copper sulfide; wherein the absorption mass is regenerated by interrupting the contact of the gas with the mass when the mass is at least partially saturated, contacting the mass with an oxidizing gas containing from 0.5 to 5% by volume of oxygen, at a temperature of from 250 to 345/sup 0/C, to convert the copper sulfide substantially to copper sulfate, and then contacting the mass with a reducing gas containing from 5 to 20% by volume of hydrogen, at a temperature of from 300 to 450/sup 0/C, to convert the copper sulfate substantially to sulfur dioxide and metallic copper, thereby regenerating the mass, which is then contacted again by the hydrogen sulfide containing gas.

• Assignee: Institut Francais Du Petrole (France)
• Patent Number(s): US 4251495
• OSTI ID: 6344639
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
010402 -- Coal
Lignite
& Peat-- Purification & Upgrading
03 NATURAL GAS
030300* -- Natural Gas-- Drilling
Production
& Processing
CARBON COMPOUNDS
CARBON DIOXIDE
CARBON OXIDES
CHALCOGENIDES
CHEMICAL REACTIONS
COPPER
DESULFURIZATION
ELEMENTS
FLUIDS
FUEL GAS
FUELS
GAS FUELS
GASES
HIGH TEMPERATURE
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
METALS
OXIDES
OXYGEN COMPOUNDS
REMOVAL
SULFIDES
SULFUR COMPOUNDS
SYNTHESIS GAS
TRANSITION ELEMENTS