COS-Claus configurations and methods
AssigneeFluor Technologies Corporation
InventorsThomas King Chow, John Gebur, Satish Reddy, Vincent Wai Wong
Life of this patent
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Abstract
Carbonyl sulfide (COS) from a COS-containing stream (106) is convened in a Claus plant (100) to elemental sulfur (152, 162) by oxidation of a first portion of the COS-containing stream to SO2 and by hydrolysis of a second portion of the COS-containing stream to H2S. In preferred aspects of the inventive subject matter, hydrolysis and/or oxidation of the COS is performed in the reactor furnace (10), while hydrolysis of the COS is performed in the reactor furnace (10), a hydrolysis reactor, and/or a catalytic converter (120, 130, 150).
Claims18
A Claus plant comprising:
- a reaction furnace that receives a first portion of a COS-containing stream to form sulfur dioxide from the COS;
- and
- a catalytic converter that receives the sulfur dioxide from the reactor furnace, and that further receives a second portion of the COS-containing stream to form hydrogen sulfide from the COS, wherein the sulfur dioxide and the hydrogen sulfide react in the converter to form elemental sulfur.
A Claus plant comprising:
- a reaction furnace that receives in a first section at least a portion of a COS-containing stream to form sulfur dioxide from the COS;
- and
- a hydrogen sulfide source that provides hydrogen sulfide to a second section of the reactor furnace, wherein the hydrogen sulfide and the sulfur dioxide react in the second section to elemental sulfur.
A method of converting a COS-containing stream to a sulfur product in a Claus plant, comprising:
- oxidizing a first portion of COS from the COS-containing stream in a reaction furnace to sulfur dioxide;
- hydrolyzing a second portion of COS from the COS-containing stream in at least one of the reaction furnace, a hydrolysis reactor, and a catalytic converter to hydrogen sulfide;
- and
- catalytically reacting the sulfur dioxide with the hydrogen sulfide to form the sulfur product.
Dependencies are inferred from the claim text.