Device and process for preparing liquid ferrate through electrolysis method

Abstract

The invention relates to a device for preparing liquid ferrate through an electrolysis method. The device is characterized in that an electrolyzer is a U-shaped pipe electrolyzer, an alkali liquor inlet of an alkali liquor storage tank is communicated with the alkali liquor inlet of the U-shaped pipe electrolyzer through an alkali liquor delivery pump and an alkali liquor control valve which are arranged on a pipeline, the liquid ferrate outlet of the U-shaped pipe electrolyzer is communicated with a liquid ferrate storage tank through a liquid ferrate control valve and a liquid ferrate delivery pump which are arranged on the pipeline, a side pipeline of the alkali liquor inlet of the U-shaped pipe electrolyzer is a cathode chamber, a cathode electrode is arranged in the cathode chamber of the U-shaped pipe electrolyzer, a side pipeline of the liquid ferrate outlet of the U-shaped pipe electrolyzer is an anode chamber, at least one anode electrode is arranged in an enlarged containing groove of the anode chamber of the U-shaped pipe electrolyzer, and the cathode electrode and the anode electrode are connected with a direct current power source. The device is simple in structure, economical and applicable, scientific and reasonable in technologic process, and low in operation cost, has high current efficiency and good effect, and can be widely used for interval or continuous production.

Description

technical field [0001] The invention relates to the field of electrochemistry, and relates to a device for preparing liquid ferrate by electrolysis and a process thereof. Background technique [0002] Ferrate is a "green" chemical reagent with strong oxidizing properties, high discharge capacity and no secondary pollution. Natural ferrate hardly exists, so the preparation method and process conditions of ferrate have become an important research topic in recent years. There are usually three methods to produce ferrate, and the raw materials are all stable and easy to get. These methods mainly include: (1) electrochemical method, (2) high temperature dry oxidation method, (3) room temperature wet oxidation method. The high-temperature drying oxidation method, also known as the melting method, is the earliest method to discover ferrate. It refers to the method of preparing ferrate by high-temperature solid phase (or molten phase) reaction in the presence of caustic alkali. ...

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Problems solved by technology

The disadvantage is that the cost of this kind of diaphragm with special performance is very high. After using the diaphragm, only part of the ions can pass through, the conductivity of the solution is limited, and the current efficiency is reduced; the diaphragm is easily polluted and corroded, and needs to be cleaned and replaced frequently; and because of this The diaphragm is a cationic membrane, and the lye produced by the cathode cannot be transported to the anode for utilization

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