CO2 Compression
CO2 Compression

The CO2 captured from a power plant must be compressed from near atmospheric pressure to a pressure between 1,500 and 2,200 psi to be transported via pipeline and then injected into an underground storage site. 

The compression of CO2 represents a potentially large auxiliary power load on the overall power plant system. For example, in an August 2007 study conducted for NETL, COcompression was accomplished using a six-stage centrifugal compressor with interstage cooling that required an auxiliary load of approximately 7.5 percent of the gross power output of a subcritical pressure, coal-fired power plant. As a result, NETL is sponsoring R&D to develop novel methods that can significantly decrease the power requirements for CO2 compression.  NETL-funded CO2 compression projects are shown in the table below. 

Click on a project title in the table for more information.

Oxygen Production

CO2 Compression
Active and completed projects advancing the development of CO2 compression systems.

Active CO2 Compression Projects
Advanced Carbon Dioxide Compression with Supersonic Technology
Dresser-Rand Company
Pilot scale
Completed CO2 Compression Projects
Ramgen Supersonic Shock Wave Compression and Engine Technology
Ramgen Power Systems
Pilot scale
Novel Concepts for the Compression of Large Volumes of Carbon Dioxide Southwest Research Institute (SwRI)
Pilot scale
CO2 Compression Using Supersonic Shock Wave Technology Ramgen Power Systems
Pilot scale