The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Feb. 27, 2024
Filed:
May. 26, 2021
Evonik Operations Gmbh, Essen, DE;
Nils Henning Seidel, Frankfurt, DE;
Johannes Kamp, Frankfurt, DE;
Jürgen Glenneberg, Offenbach, DE;
Christian Panz, Wesseling-Berzdorf, DE;
Eduardo Federico Arévalo Saade, Erlensee, DE;
Hari Prasad Mangalapally, Hanau-Grossauheim, DE;
Evonik Operations GmbH, Essen, DE;
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.