Process for the separation of methanol from gas mixtures

US10843125B2 · kind B2 · utility

Assignee

• L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude · FR

Inventors

• Martin RAVENTOS · Champigny-sur-Marne, FR
• Jörg Ott · Munich, DE
• Tobias OELMANN · Bad Vilbel, DE
• Benjamin Nuri · Oberursel, DE

Key dates

• Filing date: Dec 6, 2016
• Grant date: Nov 24, 2020
• Expiry date: Jul 16, 2037

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B01D2258/02
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

With the invention a washing apparatus and a process for the efficient separation and recovery of methanol from waste gases loaded with methanol is proposed, wherein the invention also can be used in an integrated flow chart for the production and processing of methanol. The methanol fractions separated from the waste gases are recovered within the already existing, distillative processing of the crude methanol to pure methanol, so that no separate apparatuses are required for the recovery of the methanol from the loaded scrubber waste waters. The valuable substance methanol is recovered and the impact on the environment is reduced. By particular aspects of the invention the total degree of methanol separation can be adapted according to the locally applicable emission limit values.