Electrolytic reactor comprising a cathode and an anode

Patent metadata

Field	Value
Publication number	US-2019161875-A1
Application number	US-201715823263-A
Country	US
Kind code	A1
Filing date	Nov 27, 2017
Priority date	Nov 27, 2017
Publication date	May 30, 2019
Grant date	—

Abstract

The invention concerns an electrolytic reactor, in particular for separating phosphate from phosphate-containing liquids and recovering phosphate salts, comprising a housing, an inlet and an outlet for the liquid and two electrodes of different polarity, which enclose a reactor chamber between them, whereby at least one of the two electrodes is a sacrificial electrode, whereby between the inlet and the reaction chamber a pre-chamber is provided in which the inserts are arranged such that the inlet stream is divided by the inserts into two partial streams and directed around the inserts.

First claim

What is claimed is:

1 . Electrolytic reactor, in particular for separating phosphate from phosphate-containing liquids and recovering phosphate salts, comprising a housing, an inlet and an outlet for the liquid and two electrodes of different polarity which enclose a reactor chamber between them, whereby at least one of the two electrodes is a sacrificial electrode, characterized in that between the inlet the reaction chamber a pre-chamber is provided in which inserts are arranged such that the inlet stream is divided by the inserts into two partial streams and directed around the inserts.

2 . Reactor according to claim 1 , characterized in that between the reaction chamber and the outlet an after-chamber is provided in which the inserts are arranged such that the outlet stream is divided into two partial streams by the inserts and directed around the inserts.

3 . Reactor according to claim 1 , characterized in that the inserts consist of one or more bulkheads.

4 . Reactor according to claim 1 , characterized in that the inlet and/or the outlet have a circular stream cross-section and the reaction chamber has a rectangular stream cross-section.

5 . Reactor according to claim 1 , characterized in that the distance between the inserts and the reaction chamber is at least one tenth of the width of the reaction chamber.

6 . Reactor according to claim 1 , characterized in that die inserts on both sides are wider by at least the length C than an entry cross-section of the reaction chamber.

7 . Reactor according to claim 1 , characterized in that the stream cross-section of the reaction chamber is much wider than it is high, in particular that the height to with ratio is at least 1:50, preferably at least 1:70 and more preferably at least 1:100.

8 . Reactor according to claim 1 , characterized in that the reaction chamber has a rectangular cross-section in flow direction and a constant stream cross-section throughout the entire reaction chamber.

9 . Reactor according to claim 1 , characterized in that the electrode which is on top during operation is movable and that the bottom electrode can be tracked to maintain a constant height (S) of the reaction chamber.

10 . Reactor according to claim 1 , characterized in that between the housing, preferably between a housing half in the operating state, and the electrode which is at the top in the operating state, a covering is provided which prevents liquid from entering that region.

11 . Reactor according to claim 10 , characterized in that the covering consists of a flexible material and is arranged such that a movement of the top electrode can be adjusted by a movement thereof.

Assignees

• Fraunhofer Ges Forschung

Inventors

• Egner Siegfried
• Mariakakis Iosif
• Claussnitzer Uwe

Classifications

• C25B15/04

  Regulation of the inter-electrode distance · CPC title

• C25B1/18 Primary

  Alkaline earth metal compounds or magnesium compounds · CPC title

• C25B15/08 Primary

  Supplying or removing reactants or electrolytes; Regeneration of electrolytes · CPC title

• C25B9/12

  Chemistry & Metallurgy · mapped topic

• C25B11/0415

  Chemistry & Metallurgy · mapped topic