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US 4,053,574 AGranted
Gas desulfurization process
AssigneeExxon Research & Engineering Co.
InventorsNeville L. Cull, Paul E. Eberly, Jr.
Life of this patent
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Abstract
Hydrogen sulfide is removed from a gaseous mixture by reaction with tellurium dioxide. After the reaction, the resulting tellurium can be reoxidized.
Claims13
A process for removing at least a portion of hydrogen sulfide from a gaseous mixture containing the same, which comprises contacting said gaseous mixture with a particulate tellurium dioxide reactant at reaction conditions and recovering a gaseous mixture having a reduced content of hydrogen sulfide.
A process for removing at least a portion of hydrogen sulfide from a gaseous mixture containing the same, which comprises the steps of:
- a. contacting said gaseous mixture with a particulate tellurium dioxide reactant composited with a carrier at a temperature ranging from about 75.degree. to about 125.degree. C., at a gas space velocity ranging from about 800 to about 1200 V/Hr./V, at atmospheric pressure;
- b. recovering a gaseous mixture containing a reduced content of hydrogen sulfide;
- c. subjecting the deactivated reactant comprising elemental tellurium and a sulfur deposit to a sulfur removal treatment;
- and
- d. contacting the sulfur-removed reactant resulting from step (c) with an oxidizing gas in a regeneration zone at a temperature ranging from about 300.degree. to about 400.degree. C. to form tellurium dioxide.
2 more elements
Dependencies are inferred from the claim text.