High temperature steam electrolyzing device

A high temperature steam electrolyzing device comprising:

• an electrolyzing cell section that includes an oxygen electrode and a hydrogen electrode made of a porous material and having a conical profile with an upwardly increasing horizontal cross-sectional area, the oxygen electrode and the hydrogen electrode being arranged respectively above and below a solid oxide electrolyte extending in a horizontal direction and operating as an intermediate layer and electrolyzes steam to generate hydrogen;
• a conical metal-made fixing ring that has an inner surface with an upwardly increasing horizontal cross-sectional area for receiving the conical hydrogen electrode inserted therein;
• a unit support member for supporting the fixing ring;
• fitting flanges arranged at mutually opposite surfaces of the fixing ring and the unit support member;
• gaskets made of metal or a mineral-based material and interposed between the fixing ring and the unit support member;
• and
• fastening members for separably fastening the fitting flanges.

A high temperature steam electrolyzing device comprising:

• an electrolyzing cell section that includes a hydrogen electrode and an oxygen electrode made of a porous material and having a conical profile with an upwardly increasing horizontal cross-sectional area, the oxygen electrode and the hydrogen electrode being arranged respectively above and below a solid oxide electrolyte extending in a horizontal direction and operating as an intermediate layer and electrolyzes steam to generate hydrogen;
• a conical metal-made fixing ring that has an inner surface with an upwardly increasing horizontal cross-sectional area for receiving the conical electrode inserted therein;
• a unit support member for supporting the fixing ring;
• fitting flanges arranged at mutually opposite surfaces of the fixing ring and the unit support member;
• gaskets made of metal or a mineral-based material and interposed between the fixing ring and the unit support member;
• and
• fastening members for separably fastening the fitting flanges.

A high temperature steam electrolyzing device comprising:

• an electrolyzing cell section that includes a hydrogen electrode and an oxygen electrode arranged at mutually opposite sides of a solid oxide electrolyte operating as intermediate layer and electrolyzes steam to generate hydrogen;
• a porous metal-made support member for supporting lower surface of the hydrogen electrode of the electrolyzing cell section;
• a metal-made fixing ring arranged outside the porous metal-made support member and connected to end surface of the porous metal-made support member by way of a weld section;
• and
• a unit support member for support end section of the metal-made fixing ring.