Device and process for producing hydrogen peroxide by an anthraquinone process

US11912571B2 · kind B2 · utility

Assignee

• Evonik Operations GmbH · DE

Inventors

• Nils Henning Seidel · Frankfurt, DE
• Johannes Kamp · Frankfurt, DE
• Jürgen Glenneberg · Offenbach, DE
• Christian Panz · Wesseling, DE
• Eduardo Federico Arévalo Saade · Rückingen, DE
• Hari Prasad Mangalapally · Hanau, DE

Key dates

• Filing date: May 26, 2021
• Grant date: Feb 27, 2024
• Expiry date: Apr 2, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C01P2006/82
• WIPO field: Chemical engineering
• WIPO sector: Chemistry

Abstract

In a cyclic anthraquinone process for producing hydrogen peroxide, which comprises a distillation unit with vapor compression for concentrating hydrogen peroxide, aqueous condensate from the distillation unit is passed over a bed of a cation exchange resin in its protonated from to provide a purified condensate, and the purified condensate is used as extractant for extracting hydrogen peroxide in the anthraquinone process, as column reflux for the distillation unit or as a diluent for diluting an aqueous hydrogen peroxide solution.