Low temperature oxidation of hydrogen sulfide in the presence of oil shale

Patent · Tue Apr 04 04:00:00 EST 1978

OSTI ID:6613734

Compton, L E; Rowan, W H

The hydrogen sulfide concentration of a gas is reduced by introducing a gas containing a first, relatively higher hydrogen sulfide concentration to a fragmented permeable mass of particles containing oil shale. Hydrogen sulfide in the gas is reacted at a temperature less than 650/sup 0/F with oxygen in the presence of the oil shale to yield gas containing a second, relatively lower hydrogen sulfide concentration. The oil shale promotes the oxidation of the hydrogen sulfide. The gas with the lower hydrogen sulfide concentration is withdrawn from the fragmented oil shale. The gas containing a relatively higher hydrogen sulfide concentration can be reacted or combined with oxygen at a temperature up to about 650/sup 0/F to form sulfur- and oxygen-bearing compounds in the presence of a fragmented permeable mass of particles containing oil shale treated to remove organic materials. At least a portion of the treated oil shale contains alkaline earth metal oxides which combine with the sulfur compounds, such as SO/sub 2/. This method is effective for reducing the hydrogen sulfide concentration of off-gas from an in situ oil shale retort. (41 claims)

• Assignee: EDB-83-031861
• Patent Number(s): US 4082146
• OSTI ID: 6613734
• Country of Publication: United States
• Language: English

Related Subjects

04 OIL SHALES AND TAR SANDS
040404* -- Oil Shales & Tar Sands-- Purification
BITUMINOUS MATERIALS
CARBONACEOUS MATERIALS
CHALCOGENIDES
CHEMICAL REACTIONS
CONTROL
DESULFURIZATION
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
HYDROGEN SULFIDES
MATERIALS
OIL SHALES
OXIDATION
OXIDIZERS
REMOVAL
SULFIDES
SULFUR COMPOUNDS
TEMPERATURE CONTROL
USES