HIGH-PRESSURE ELECTROLYSIS UNIT Russian patent published in 2013 - IPC C25B1/12 C25B9/20 

FIELD: metallurgy.

SUBSTANCE: invention refers to electrolysis unit (100) including the following: high-pressure housing (115) having a shell and opposite closed ends; pack (101) of electrolytic cells inside the high-pressure housing, which contains a group of bipolar electrolytic cells assembled in a pack between the fist end contact plate (107a) and the second end contact plate (108a), and adapted for operation at internal pressure; connections for fluid media for supply of electrolyte to pack of cells and for discharge of product(s) of electrolysis unit from the pack of cells, and electrical connections including at least anode and cathode connections. Electrolysis unit is characterised by the fact that: the first end contact plate (107a) of pack of cells composes a single whole together with one of closed ends of the high-pressure housing, thus forming stationary head (107) of pack of cells, which is equipped with connections (122) for fluid media and electrical connections (120, 121) of anode and cathode with pack of cells, and the second end contact plate (108a) of pack of cells is insides high-pressure housing (115) and has the possibility of of free movement in longitudinal direction relative to the first end contact plate and the housing, at thermal expansion or compression, thus forming floating head (108) of pack of cells. Also, the invention refers to a method for performance of electrolysis, to electrolysis equipment and to obtainment of high-pressure hydrogen, which use the above electrolysis unit.

EFFECT: invention provides an electrolysis unit allowing to obtain hydrogen at the pressure required for its storage in reservoirs; at that, it does not contain any connectors for fluid media critical for tightness of the system and excludes the risk of parasite currents and dangerous closures appearing in case of electrolyte leakage.

14 cl, 4 dwg