Bringing large H2 volume flows to the highest possible intermediate and final pressures with just a few compressor stages, without having to set up huge reciprocating compressor systems for this purpose - precisely here is where the new VRW 536 M oil-free screw compressor from AERZEN comes in. Compression is based on the principle of oil-fluided screw compressors - with a small but subtle difference: the oil was replaced by water. The water serves both for cooling the gas and for gap sealing and enables compression to higher differential pressures with high efficiency. This stage can, thus, replace a two-stage system with classic dry screw compressors and is even more energy efficient. For the customer, this results in significant advantages in terms of footprint as well as investment and operating costs. Technical Data: Suction volume flow up to: 6000 m³/h, pressure range: -900mbar g to 9.0 bar g
The new VRW type oil-free compressor has been specifically designed to compress wet electrolysis hydrogen with unprecedented efficiency and differential pressure.
The VRW follows the dynamic operation and the special requirements of the most modern electrolysers, whether alkaline technology (AEL), proton exchange membrane (PEM), or high temperature (SOEL).
As a pre-compressor for large quantities of H2 from atmospheric electrolysis, the VRW provides downstream compressor types with the inlet pressure that reciprocating compressors in particular require for economical machine designs.
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