Patent ID: 8308439

Claim:
A multistage gas compressor system, said system comprising: a plurality of compressor stages connected in series along a gas passage configured to receive a gas flow having contaminants, said plurality of compressor stages including a first compressor in a first compressor stage and a second compressor in a second compressor stage disposed downstream from said first compressor stage along said gas passage; a solvent supply configured to supply solvent to said gas passage at or upstream of said first compressor to entrap or dissolve the contaminants in the gas flow; a controller to determine a first upstream gas pressure, a first upstream gas temperature, and a first specific heat for the gas flow upstream of said first compressor; said first compressor is configured to produce a pressure ratio that provides a first discharge temperature that remains below a threshold temperature at which the contaminants entrapped or dissolved within the solvent are chemically degraded based on the upstream gas pressure, the upstream gas temperature, and the specific heat determined by the controller for the gas flow upstream of said first compressor; said second compressor is configured to produce a pressure ratio that provides a second discharge temperature that remains below a threshold temperature at which the contaminants entrapped or dissolved within the solvent are chemically degraded based on a second upstream gas pressure, a second upstream gas temperature, and a second specific heat for the gas flow downstream said first compressor and upstream said second compressor; and the second discharge temperature is higher than the first discharge temperature.