Evonik and Siemens Energy are planning an 8 MW hydrogen plant in Herne. As part of this ambitious project, Luxembourg-based Sisto Armaturen S.A. has now supplied special valves for the PEM electrolyzer.
Sisto, which belongs to pump manufacturer KSB, has supplied pneumatically actuated diaphragm valves and non-return valves for the production of green hydrogen in Herne. According to the company, the diaphragm valves from the Sisto-20 series are particularly suitable for the electrolyser currently under construction, which operates according to the proton exchange membrane principle (PEM).
This is because only the inside of the housing and the chambered end diaphragm come into contact with the pumped media. In addition, the series achieves a long service life thanks to the rear support of the diaphragm.
Pneumatically actuated diaphragm valves for PEM electrolyser
The non-return valves used in the Deionat are rubberized on the inside. Due to the compact design of the system, they allow for short calming distances of only one nominal diameter. According to the manufacturer, the valves and non-return valves are already being used in numerous electrolysis plants around the world.
The energy carrier produced in Herne is to be used as a starting material for isophorone diamine, a raw material for the rotor blades of wind turbines. The green hydrogen from Herne is intended to replace the gray hydrogen from fossil fuels used today.
