Bayer Materialscience Ag

Uhdenora S.p.a.

Bayer Intellectual Property Gmbh

Covestro Deutschland Ag

Thyssenkrupp Uhde Chlorine Engineers Gmbh

Thyssenkrupp Uhde Chlorine Engineers S.r.l.

Michael Grossholz

Andreas Bulan

Rainer Weber

Fritz Gestermann

Peter Woltering

Volker Michele

Randolf Kiefer

Hans-Dieter Pinter

Walter Hansen

Hans-Joachim Brockhaus

Manfred Marre

The invention relates to an electrochemical cell comprising an anode and a cathode compartment separated by a membrane, housing corresponding electrodes. The anode and the cathode compartments having external walls with frame-type flanged areas in the contact area of both compartments. The flanged areas having mounting bores marking an inner area and an outer area of the electrochemical cell a, gas-diffusion electrode resting on a support system, a porous material resting on the gas-diffusion electrode, and devices for the inlet and outlet of gas and electrolyte. At least one circumferential gasket frame is in the contact area of both compartments, between the frame-type flanged areas of the external walls of both compartments, said gasket resting on the membrane, with the porous material and the gas-diffusion electrode resting on the frame-type cathodic flanged area and the circumferential gasket frame overlapping in this area with the porous material and the gas-diffusion electrode.

Electrochemical cell having a frame seal for alternative sealing against marginal leakages of the electrolyte

A method for the electrolysis of aqueous solutions of hydrogen chloride in order to produce chlorine, characterized in that the following process parameters are maintained for initial operation:

Method for electrolysis of aqueous solutions of hydrogen chloride

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Leverkusen, Germany

Michael Grossholz