12-12-2019 дата публикации
Номер: US20190376192A1
Принадлежит:
The present application refers to a method for the reduction of the corrosiveness of a heat storage or heat transfer fluid material for the high-temperature range and a device for said method. The respective heat storage or heat transfer fluid material obtained by the method may be used in solar thermal power plants, conventional fossil power plants with higher flexibility, pumped thermal energy storage, combined heat and power plants, intermediate storage of high-temperature process heat, or in sensible heat storage with molten salts. 1. A method comprising: exposing the molten salt to a voltage;', 'contacting the cathode and the anode physically and electrically with the molten salt; and', 'removing at least a portion of the at least one oxygen impurity., 'providing an electrochemical system comprising an anode and a cathode and a molten salt containing at least one oxygen impurity;'}2. The method of claim 1 , wherein the molten salt comprises a halogen salt.3. The method of claim 2 , wherein the halogen salt comprises a chloride salt.4. The method of claim 2 , wherein:the halogen salt comprises a cation, andthe cation comprises at least one of Mg, Ca, Na, K, Li, Sr, Ba, Zn, Al, Sn, Fe, Cr, Mn, or Ni.5. The method of claim 1 , wherein the exposing is performed at a temperature between 300° C. and 800° C.6. The method of claim 1 , wherein the exposing is performed in an inert atmosphere.7. The method according to claim 1 , wherein the material for an anode in the electrochemical process is selected from an alkali metal claim 1 , e.g. Li claim 1 , Na claim 1 , K claim 1 , an alkaline earth metal (e.g. Mg claim 1 , Ca claim 1 , Sr claim 1 , Ba) claim 1 , a transition metal (e.g. Co claim 1 , Ni claim 1 , Fe claim 1 , Zn) claim 1 , or a metalloid (e.g. B or Si).8. The method according to claim 1 , wherein the material for an anode in the electrochemical process is an alkaline earth metal such as Mg.9. The method according to claim 1 , wherein the material for the ...
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