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US 9,102,604 B1Granted
Methods for cleaning distilling columns
AssigneesBaxter International Inc., Baxter Healthcare S.A.
InventorsLeonid A. Rozov, Linas Kudzma, Hong-Chang Lee, Ronald Bell
Life of this patent
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Abstract
A method for cleaning a distilling column includes providing a distilling column including a packing containing nickel and adding hydrochloric acid to the distilling column to wash at least a portion of the packing, thereby cleaning the distilling column.
Claims24
A method for cleaning a distilling column comprising:
- providing a distilling column including a packing comprising nickel;
- adding hydrochloric acid to the distilling column to wash at least a portion of the packing, thereby cleaning the distilling column;
- and,
- distilling at least one sample containing sevoflurane in the distilling column before adding the hydrochloric acid.
1 more element
A method for cleaning a distilling column comprising:
- providing a distilling column including a packing comprising nickel;
- adding hydrochloric acid to the distilling column to wash at least a portion of the packing, thereby cleaning the distilling column;
- and,
- distilling at least one sample containing sevoflurane in the distilling column after adding the hydrochloric acid.
1 more element
A method for distilling sevoflurane comprising:
- adding at least one sample containing sevoflurane to a distilling column, said distilling column including a packing comprising nickel;
- distilling the sample to obtain purified sevoflurane;
- washing at least a portion of the packing with hydrochloric acid;
- adding at least one additional sample containing sevoflurane to the distilling column;
- and,
- distilling the additional sample to obtain additional purified sevoflurane.
3 more elements
Dependencies are inferred from the claim text.