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AssigneePeroxid-Chemie GmbH
InventorsMichael Gnann, Wolfgang Thiele, Gerd Heinze
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A bipolar multipurpose electrolysis cell according to the invention for high current loads comprises a clamping frame, two electrode edge plates with metal electrode sheets and supply conductor, as well as bipolar electrode plates, the latter comprising: in each case one electrode base body made from plastic, having cooling spaces and/or electrode back spaces which are machined in on one or both sides, machined-in feed and discharge lines for the electrolyte solutions and the cooling medium, metal electrode sheets which are applied to both sides of the base body and in the electrochemically active region are solid and/or perforated, electrolyte sealing frames which rest on the solid metal electrode sheets and are made from elastic plastic, ion exchange membranes, which rest on the perforated metal electrode sheets and/or the electrolyte sealing frames, for separating the electrode spaces, and is characterized in that the electrode plates have a height-to-width ratio of 30:1 to 1.5:1, the metal electrode sheets and the electrolyte sealing frames project laterally beyond the electrode base bodies and are connected both to vertical contact rails, which are arranged on both sides at a distance of 1 to 50 mm from the electrode base bodies, and, in the region of the electrolyte sealing frames, to the electrode base bodies, to form mechanically stable, bipolar electrode plates which can be fitted as independent units, the electrical insulation of two adjacent bipolar units with respect to one another being brought about by the electrolyte sealing frames, with simultaneous sealing of the electrolyte spaces when the electrode plates are clamped by means of the clamping frame as a result of the pressure.
Bipolar multipurpose electrolysis cell for high current loads, comprising a clamping frame, two electrode edge plates with metal electrode sheets and supply conductor as well as bipolar electrode plates, the latter comprising:
Bipolar multipurpose electrolysis cell according to one of the preceding claims, characterized in that the current contact surfaces of the electrodes are provided with coatings of platinum, gold, silver or copper layers of good conductivity.
Bipolar multipurpose electrolysis cell according to one of the preceding claims, characterized in that the contact rails comprise copper which is tin-plated, silver-plated or coated with a precious metal.
Bipolar multipurpose electrolysis cell according to one of the preceding claims, characterized in that the contact rails and the electrode contacts are gold-plated or platinum-plated, and the current is transmitted as a result of the pressure contact formed as a result of clamping of the electrode assembly.
Bipolar multipurpose electrolysis cell according to one of the preceding claims, characterized in that there is an air gap of a few millimetres between cell frame and vertical contact rails, which gap allows drainage in the event of slight electrolyte leakage and prevents infiltration of the current contacts.
Bipolar multipurpose electrolysis cell according to one of the preceding claims, characterized in that the height of the electrode plates is from 1.5 to 3 m and their height/width ratio is from 10:1 to 1.5:1.
Dependencies are inferred from the claim text.