Electrolytic reactor

Patent metadata

Field	Value
Publication number	US-10837116-B2
Application number	US-201715823098-A
Country	US
Kind code	B2
Filing date	Nov 27, 2017
Priority date	Nov 27, 2017
Publication date	Nov 17, 2020
Grant date	Nov 17, 2020

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 and consists of a magnesium-containing material, whereby the sacrificial electrode is constructed of trapezoid bars which have a first and a second upper surface, whereby the first upper surface is smaller than the second upper surface, and whereby four lateral surfaces connect the first upper surface with the second upper surface.

First claim

What is claimed is:

1. Electrolytic reactor for separating phosphate from phosphate-containing liquids and recovering phosphate salts, comprising a housing, an inlet and an outlet for the liquid, and first and second sacrificial magnesium anodes which enclose a reactor chamber between them where the liquid may flow in a direction, characterized in that each of the anodes are constructed of trapezoid bars which have a first upper surface and a second upper surface, whereby the first upper surface is smaller than the second upper surface, and four lateral surfaces which each connect the first with the second upper surface, characterized in that the trapezoid bars for building a continuous surface are alternately arranged with the first and second upper surface facing the reaction chamber and complement each other in form.

2. Reactor according to claim 1 , characterized in that the trapezoid bars have a longitudinal direction and in terms of their longitudinal direction are arranged transverse to the flow direction of the reactor chamber.

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

4. Reactor according to claim 1 , characterized in that one anode is movable relative to the other anode such that the spacing between the two anodes is constant.

5. Reactor according to claim 1 , characterized in that the trapezoid bars of the anodes form a rectangular surface facing the reactor chamber.

6. Reactor according to claim 1 , characterized in that the anodes can be alternated to act as anode and as cathode.

7. Reactor according to claim 4 , characterized in that the movable anode is contacted via a flexible contact strip or a flexible contact chain that is in contact with every one of the trapezoid bars.

Assignees

• Fraunhofer Ges Forschung

Inventors

• Egner Siegfried
• Mariakakis Iosif
• Claussnitzer Uwe

Classifications

• C25B11/057

  consisting of a single element or compound · CPC title

• C25B9/30

  Cells comprising movable electrodes, e.g. rotary electrodes; Assemblies of constructional parts thereof · CPC title

• C25B1/18

  Alkaline earth metal compounds or magnesium compounds · CPC title

• C25B15/04

  Regulation of the inter-electrode distance · CPC title

• C02F2101/105

  Phosphorus compounds · CPC title