Patent ID: 7981260
Filing Date: 2011-07-19
Classification: C25C

Abstract:
1. An electrolysis cell for preparing a liquid alkali metal from a liquid alkali metal-heavy metal alloy, wherein the electrolysis cell comprises: a tube which is arranged essentially horizontally and has a closure device at each of the two ends of the tube, at least one solid electrolyte tube arranged in the tube, which conducts alkali metal ions and is closed at one end and has an opening at the other end, with the solid electrolyte tube being arranged concentrically in the tube and having the opening facing one end of the tube so that a first annular gap for conducting the liquid alkali metal-heavy metal alloy which forms one anode is present between the inside of the tube and the outside of the solid electrolyte tube, and an interior space in the solid electrolyte tube for accommodating the liquid alkali metal which can be utilized as cathode, wherein the closure device comprises an alkali metal-heavy metal alloy inlet or outlet opening into the first annular gap, a holder for the solid electrolyte tube, an alkali metal outlet connected to the interior space of the solid electrolyte tube and a sealing system for sealing the interior space of the solid electrolyte tube and the alkali metal outlet off from the first annular gap, the alkali metal-heavy metal alloy inlet or outlet and from the surroundings of the electrolysis cell.