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US 11,203,561 B2Granted
Stabilization of polyhydric alcohols by steam injection
AssigneeShell Oil Company
InventorsPieter Huizenga, Kai Jürgen Fischer
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Abstract
A method for separating monoethylene glycol (MEG) from one or more oxygenates. The method includes providing a stream comprising MEG and one or more oxygenates to a distillation column, providing a water feed stream to a bottom of the distillation column, and removing a recovery stream comprising MEG from the distillation column. The distillation column is operated at higher temperatures than the thermal stability of MEG and the one or more oxygenates.
Claims18
A method for separating oxygenates, the method comprising:
- providing a stream comprising oxygenates to a distillation column;
- providing a water feed stream to a bottom of the distillation column;
- operating the distillation column at higher temperatures than the thermal stability of the oxygenates;
- removing a first recovery stream comprising a first portion of the oxygenates from the distillation column at a point above the oxygenates;
- and
- removing a second recovery stream comprising a second portion of the oxygenates from the distillation column at a point below the oxygenates.
3 more elements
Dependencies are inferred from the claim text.