Rising environmental awareness provides companies with opportunities to improve their carbon footprint with Linde's proven carbon dioxide (CO2) technologies. We are an experienced partner with a range of solutions in CO2 capture and removal from industrial processes and plant emissions.
Carbon capture and storage (CCS) plants
CCSW plants currently provide the most potential to significantly reduce carbon emissions from fossil-fuelled power stations. There are three main pathways for carbon capture:
Post-combustion capture uses chemicals to separate the carbon dioxide in conventional coal-fired power plants. In post-combustion capture, CO₂ is separated from the ﬂue gas by scrubbing, using a chemical solvent such as amine. For this process, Linde provides the amine-based solvent systems and the CO₂ compression, drying and puriﬁcation system.
In pre-combustion capture, also known as Integrated Gasification Combined Cycle (IGCC), the fuel is first gasified with oxygen to produce a synthesis gas, then converted into separate streams CO2 and hydrogen. For this process, Linde provides the air separation unit, gasification and synthesis gas systems including shift and Rectisol® wash.
In the oxy-fuel process, coal is combusted in an environment of pure oxygen and CO2. This pure mixture burns at a higher temperature than atmospheric air and results in more efficient burning. The resulting flue gas is not diluted by nitrogen from the air but is primarily CO2 and water vapor. This vapor is easily condensed, leaving a highly concentrated CO2 stream that can be compressed and transferred for storage. for this process, Linde provides the air separation and CO2 units and an optional liquefaction system.