Integrally Geared Centrifugal Compressors for High-Pressure CO2

摘要

This paper is giving an overview of advanced and proven technologies for CO2 compression. These include reciprocating and centrifugal compression - with focus on modern integrally geared designs for CO2 applications. A short overview about the processes that require high-pressure CO2, Enhanced Oil Recovery (EOR), Carbon Capture & Storage (CCS) and Coal Gasification (IGCC, Oxyfuel), will be given. Traditional and advanced compression technologies will be compared and benefits of integrally geared compressors will be discussed. Design challenges concerning thermodynamical and mechanical design will be pointed out with special regard to topics arising when compressing CO2 in the supercritical region. These topics include the pronounced real gas behavior of supercritical CO2 and the close-coupled design process of integrally geared compressors.