Liquid CO₂ Pumps: Key Selection Factors for High-Pressure Industrial Applications
Transferring liquid carbon dioxide in an industrial environment requires careful equipment selection. Unlike ordinary process liquids, CO₂ is highly sensitive to changes in pressure and temperature. A pump that appears suitable based on flow capacity alone may not perform as expected once the complete operating conditions are considered. For this reason, selecting a liquid CO₂ pump should begin with the process requirements, followed by an assessment of pump design, materials, pressure capability and system configuration. Begin With the Required Duty The first step is to establish exactly what the pump needs to accomplish. The required flow rate and discharge pressure provide the foundation for equipment selection, but they are not the only parameters that matter. Project engineers may need to define: Required liquid CO₂ flow Suction pressure Discharge pressure Operating temperature Differential pressure Continuous or intermittent operation Required control range Available instal...