Energy companies have been using super-limited CO2 in enhanced oil mining for decades, often with centrifugal pumps using non-contact dry gas.As carbon capture and storage (CCUS) develops, new requirements emerge.
According to John Crane, since the late 1980s, users have sealed CO2 with non-contact dry gas filters optimally for liquids near the evaporation point. The non-tension double filtering configuration (tandem) is recommended for these applications, and filtering the discharge flow of the filters is a key factor to ensure reliability.
High-speed machinery used for pipeline transportation, re-pumping and carbon capture as temperature in the debris chamber. Increased air flow for debris and air cooling (usually taken from the exhaust gas) are needed to keep the temperature within the design limits.
Atlas Copco introduced eight-level high-pressure CO2 compressors using non-contact dynamic dry gas emissions, and said in field tests, compared to standard carbon ring emissions, dry gas emissions were only a small fraction.
John Crane, Pumps and Systems, Atlas Copco. Articles compiled and reinterpreted by SNS-VN; the brand name belongs to the owner.