Process for the high recovery efficiency of sulfur from an...

Details Process for the high recovery efficiency of sulfur from an... Process for the high recovery efficiency of sulfur from an...

2008-04-01

2008-04-01

Vanoy, Timothy C. (Department: 1793)

Chemistry of inorganic compounds

Sulfur or compound thereof

Elemental sulfur

C423S574100, C423S576800, C423SDIG017, C435S266000

Reexamination Certificate

active

07351392

ABSTRACT:
A combined process for the recovery of sulfur from an acid gas stream. The combined process includes both a Claus unit and a unit for treating the Claus tail gas with caustic to remove hydrogen sulfide therefrom and to biologically oxidize the hydrogen sulfide using certain types of sulfur bacteria to make elemental sulfur. The combined process provides for an exceptionally low concentration of hydrogen sulfide in the finally treated sweet gas.

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International Search Report for PCT/US2005/006690 of Jun. 22, 2005.
Written Opinion for PCT/US2005/006690 of Jun. 22, 2005.

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