Apparatus and process for producing a deacidified fluid stream

US11649411B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Georg Sieder · Bad Dürkheim, DE
• Raquel Fernandez Rodiles · Mannheim, DE
• Thomas Ingram · Keller, US

Key dates

• Filing date: May 31, 2019
• Grant date: May 16, 2023
• Expiry date: May 31, 2039

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10L2290/541
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

A process for producing a deacidified fluid stream from a fluid stream comprising methanol and at least one acid gas and an apparatus for carrying out the process. The process comprising a) an absorption step in which the fluid stream is contacted with an absorbent in an absorber to obtain an absorbent laden with methanol and acid gases and an least partly deacidified fluid stream; b) a regeneration step in which at least a portion of the laden absorbent obtained from step a) is regenerated in a regenerator to obtain an at least partly regenerated absorbent and a gaseous stream comprising methanol, water and at least one acid gas; c) a recycling step in which at least a substream of the regenerated absorbent from step b) is recycled into the absorption step a); d) a condensation step in which a condensate comprising methanol and water is condensed out of the gaseous stream from step b); e) a distillation step in which at least a portion of the condensate from step d) is guided into a distillation column to obtain a top stream comprising methanol and a bottom stream comprising water; which comprises recycling at least a portion of the bottom stream from step e) into the regenerator.