Method for producing diluted hydrofluoric acid
AssigneeCondias GmbH
InventorsMatthias FRYDA, Thorsten MATTHÈE
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Abstract
The invention relates to a method and a device for producing diluted hydrofluoric acid using an electrode arrangement (1), which has an anode chamber (2) with an anode (4) and a cathode chamber (6) with a cathode (8), which are separated from one another by an anion exchange membrane (10), wherein in the method—pure water is guided through the anode chamber (2), —pure water, which includes at least one electrolyte which forms fluoride ions (F−), is guided through the cathode chamber (6), —and an electrical voltage is applied between the anode (4) and the cathode (8) such that the fluoride ions (F−) are moved through the anion exchange membrane (10) into the anode chamber (2), and an electrical current flows.
Claims10
A method for producing hydrofluoric acid with an electrode arrangement which comprises an anode chamber having an anode and a cathode chamber having a cathode wherein the anode and the cathode are separated from one another by an anion exchange membrane, comprising the steps of:
- passing pure water through the anode chamber;
- passing pure water containing at least one electrolyte which forms fluoride ions (F−) through the cathode chamber;
- and
- applying an electrical voltage between the anode and the cathode so that the fluoride ions (F−) are formed in the cathode chamber and moved through the anion exchange membrane into the anode chamber to form the hydrofluoric acid therein and an electrical current flows between the anode and the cathode.
A method for handling dilute hydrofluoric acid, comprising mixing the dilute hydrofluoric with water containing cations of an electrolyte.
An apparatus for producing hydrofluoric acid, comprising:
- an anode chamber which has an anode;
- a cathode chamber which has a cathode, and wherein
- the anode chamber and the cathode chamber are separated from one another by an anion exchange membrane.
Dependencies are inferred from the claim text.