Two people on stage

oil-free, water-injected screw compressor VRW 536 M

Compressores do gás de processo

THE RIGHT COMPRESSORS - are the key to success

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

YOUR ADVANTAGES - OUR PROMISE

  • 100% oil-free compression
  • Maximum efficiency and increased differential pressure in one stage
  • Minimisation of installation area
  • Reduced investment and operating costs
  • Pre-drying of the wet H2-gas is not required
  • Ideal as a pre-compressor (booster) for the following compressor types
  • Also suitable for other critical gas applications (e.g. flare gas, contaminated gases)

INFORMATION & DOCUMENTS

Tipo de construção
Compressores do gás de processo
Caudal
2.000 a 6.000 m3/h
Médio
Hydrogen , Flare Gas , gases neutros , gases de processo , gases agressivos
Compressão
water injected

TECHNICAL PROPERTIES - THE NEW H2-COMPRESSOR CONCEPT

  • Water injection for cooling the gas and for gap sealing (efficiency increase)
  • Stainless steel design for maximum service life (corrosion resistance)
  • Water-purged mechanical seals at the conveying chamber for 100% oil-free compression
  • Oil-lubricated roller bearings for maximum speed range
  • Speed control for adaptation to fluctuating process conditions
  • Gear-synchronised rotors (no contact with the rotors)
  • Designed for three-year revision cycle (MTBO)
  • Directly coupled or with gear ratio

Hydrogen compression at the highest level

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.

APPLICATIONS:

  • Green hydrogen
  • Other gases for oil-free screw compressors: e.g. flare gas