Hexis Ag

Dirk Haberstock

Roland Denzler

Andreas Mai

Josef Sfeir

Alexander Schuler

Michael Tamas

Jeannette Clifford

A fuel cell system () having a cell stack () for the carrying out of electrochemical reactions is provided which is provided with inlets () for an oxidant () and for fuel gas () and with outlets () for exhaust gases (). The fuel cell system () additionally includes an apparatus () having a gas-permeable structure which contains a substance which reacts with gaseous chromium species, wherein the apparatus is in communication with at least one of the outlets to direct exhaust gases through the apparatus and to separate chromium species which are carried along by the exhaust gases.

Fuel cell system

The plant () with high-temperature fuel cells () includes a clamping device for a cell stack () and axially aligned chambers () for an after-burning. Clamping bars () of the clamping device are disposed between the afterburning chambers. Exhaust gas passages connect the after-burning chambers to a heat exchanger () acting as a heat sink. A clamping element () of the clamping device is in heat conducting connection with the heat exchanger. Compression springs () are respectively mounted on the clamping bars between an end of the clamping bar and a lug () of the clamping element. In this arrangement they exert a clamping force onto the clamping bars. The compression springs are shielded by the clamping element from the cell stack so that, thanks to the heat sink, the compression springs are only exposed to moderate temperature at which the clamping force is maintained.

Plant with high-temperature fuel cells and clamping device for a cell stack

Growing community of inventors

Munich, Georgia

Dirk Haberstock