Integrally geared compressors offer many advantages in comparison with horizontally or vertically split single shaft  ompressors: Lower power consumption, higher compression ratio with fewer impellers, lower investment cost and smaller footprint. These advantages lead to increased use of integrally geared compressors outside their main application fields like air separation or process air supply.

Following a 10-stage compressor for a urea plant in Russia (left) compressing wet CO2 to a discharge pressure of 200 bara and two identical 8 stage compressors for CO2 pipeline service at 187 bara in North Dakota, USA the use of such compressors in the Stamicarbon UREA Process was envisaged and successfully implemented.