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US 11,426,677 B2Granted
Plant and process for separating sulfur-containing components from laden methanol
AssigneeL'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation des Procedes Georges Claude
InventorsSophia Schmidt, Alfred Gubrinski, Sharon Corbet, Hincal Leichner
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Abstract
Plant and process for separation of sulfur-containing components, H2S, COS and mercaptans from methanol which is used as absorbent within the Rectisol process by hot regeneration of the methanol laden in the absorption and an additional step for separation of the mercaptans from the methanol by stripping.
Claims2
A process for separating sulfur-containing components including H2S, COS and mercaptans from a liquid phase comprising mainly methanol, comprising the following process steps:
- introducing the liquid phase into a distillation column,
- distilling the liquid phase thereby producing a first liquid methanol stream and a sulfur-containing component stream,
- cooling the sulfur-containing component stream then introducing the cooled sulfur-containing component stream into a first phase separator, thereby producing a first condensed liquid stream and a gas stream containing H2S and COS,
- introducing the first condensed liquid stream into a stripping column, thereby producing a mercaptan/stripping gas stream and a liquid methanol stream,
- introducing the liquid methanol stream as a return stream into the distillation column.
2 more elements
Dependencies are inferred from the claim text.