Valves for Green Wind Turbine Rotors

SISTO Armaturen S.A. has been awarded the contract to supply valves for a pilot electrolyzer in Herne. The company provides pneumatically operated diaphragm valves and check valves for the production of green hydrogen.

The diaphragm valves have been specifically developed for the electrolyzer operating on the Proton Exchange Membrane (PEM) principle. These valves ensure that only the interior of the housing and the chambered diaphragm come into contact with the conveying media. Thanks to rear support of the diaphragm, the series is characterized by long service life.

The check valves used in the deionizer are entirely rubber-lined internally and allow for a very compact plant design due to the short length of only once the nominal diameter. The valves and check valves are already used worldwide in numerous electrolysis plants.

In a joint project by Evonik and Siemens Energy named H2annibal, it is planned to produce green hydrogen in an 8 MW pilot plant in Herne. This hydrogen is intended to serve as a raw material for isophorone diamine, an important material for wind turbine rotor blades. It will replace gray hydrogen from fossil sources. The plant is expected to save up to 12,000 tons of CO2 per year after commissioning.