Akzo Nobel N.v.

Eduardo Fontes

Bo Håkansson

Fredrik Herlitz

Arne Carlsson

Magnus Davidsson

Hans-Göran Sundström

Viktoria Lindstrand

Lars Blomgren

The invention relates to a process for producing alkali metal chlorate in an electrolytic cell that is divided by a cation selective separator into an anode compartment in which an anode is arranged and a cathode compartment in which a gas diffusion electrode is arranged. The process comprises introducing an electrolyte solution containing alkali metal chloride into the anode compartment and an oxygen-containing gas into the cathode compartment. The invention also relates to an electrolytic cell for the production of alkali metal chlorate comprising a cation selective separator dividing the cell into an anode compartment in which an anode is arranged and a cathode compartment in which a gas diffusion electrode is arranged. An inlet for electrolyte solution and an outlet for electrolysed solution are provided in the anode compartment and an inlet for introducing oxygen-containing gas is provided in the gas chamber. The invention also relates to a plant comprising the electrolytic cell and the use thereof for the production of alkali metal chlorate and/or chlorine dioxide.

Process for producing alkali metal chlorate

The invention relates to a construction for ventilation of hydrogen gas comprising at least a first metallic layer (), sensitive to hydrogen embrittlement, a second () metallic layer, and a mesh (), wherein the first layer () is joined to the second layer (), and said mesh (), forming venting channels () through which channels () hydrogen can be vented, is joined to, and in between, said first () and second () metallic layers. The invention further concerns a method for production thereof.

Method and construction for ventilation of hydrogen gas

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Stockholm, Sweden

Eduardo Fontes