Process for removing impurities from acetic acid
AssigneeSabic Global Technologies B.V.
InventorsRoland Schmidt, Sebastiano Licciulli, Shahid Azam
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Abstract
A process of purifying acetic acid is provided. The process includes feeding a stream of acetic acid into a distillation column and distilling acetic acid in the presence of an oxidizing agent in the distillation column, to oxidize oxidizable impurities in the acetic acid, wherein the oxidizing agent is an oxidant capable of cleaving C═C bonds. The process further includes removing a distilled acetic acid stream from the distillation column. Further processes for purifying acetic acid and systems for purifying acetic acid are also provided.
Claims20
A process for purifying acetic acid, comprising:
- feeding a stream of acetic acid into a distillation column;
- distilling acetic acid in the presence of an oxidizing agent in the distillation column, to oxidize oxidizable impurities in the acetic acid, wherein the oxidizing agent is capable of cleaving C═C bonds;
- and
- removing a distilled acetic acid stream from the distillation column.
A process for purifying acetic acid, comprising:
- feeding a stream of acetic acid into a distillation column, wherein:
- the distillation column comprises:
- a top and a bottom;
- and
- a sump at the bottom of the distillation column;
- and
- wherein the stream of acetic acid is fed into the distillation column at or near the bottom of the distillation column;
- and
- distilling acetic acid in the presence of an oxidizing agent, wherein the oxidizing agent is positioned at or near the bottom of the distillation column.
A system for purifying acetic acid, comprising:
- a distillation column, wherein the distillation column comprises:
- a top and a bottom;
- and
- a sump at the bottom of the distillation column;
- an oxidizing agent positioned at or near the bottom of the distillation column;
- and
- an acetic acid feed line to feed acetic acid into the distillation column positioned at or near the bottom of the distillation column.
Dependencies are inferred from the claim text.