Apparatus to recover sulfur from concentrated acid gas into alkaline solution
AssigneeMcDermott Technology, Inc.
InventorsChristopher L. Verrill, William Downs
Life of this patent
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Abstract
An apparatus and method for sulfur recovery uses a scrubber tower with a plurality of vertically spaced scrubber trays in the tower. Sulfide-lean liquor is supplied to each of the trays and an acid gas is supplied to the tower below the trays. A downcomer extends in the tower and through the trays for accumulating liquid from the trays and moving the liquid to the bottom of the tower. The sulfide-lean liquor and acid gas are selected to form a sulfite-rich or sulfide-rich liquor in each of the trays which are brought to the bottom of the tower through the downcomer for removal from the tower.
Claims18
An apparatus for sulfur recovery comprising:
- a scrubber tower;
- a plurality of vertically spaced scrubber trays in the tower;
- means for supplying sulfide-lean liquor to each of the trays;
- means for supplying an acid gas to the tower below the trays;
- a downcomer extending in the tower and through the trays for accumulating liquid from the trays and moving the liquid to the bottom of the tower;
- the sulfide-lean liquor and acid gas being selected to form a sulfite-rich or sulfide-rich liquor in each of the trays which are brought to the bottom of the tower through the downcomer for removal from the tower.
A method for sulfur recovery comprising:
- providing a scrubber tower;
- providing a plurality of vertically spaced scrubber trays in the tower;
- supplying sulfide-lean liquor to each of the trays;
- supplying an acid gas to the tower below the trays;
- accumulating liquid from the trays and moving the liquid to the bottom of the tower;
- selecting the sulfide-lean liquor and acid gas to form a sulfite-rich or sulfide-rich liquor in each of the trays which are brought to the bottom of the tower;
- and
- removing the sulfite-rich or sulfide-rich liquor from the bottom of the tower.
Dependencies are inferred from the claim text.