Autothermal Cycle for Co2 Capture


Lehigh University has developed a novel process for carbon capture. This process removes carbon dioxide from flue gas through beds containing adsorbent materials. Desorption is performed by passing steam through the beds creating a stream of carbon dioxide mixed with steam. This mixture is then compressed to condense the steam and move the resultant carbon dioxide stream for sequestration or alternate use.


The key to this innovation is the coupling of adsorption and decompression. It is an efficient process and uses the latent heat of condensation of the steam as a heat source to generate steam for desorption. The adsorption of the flue gas occurs at nearly atmospheric pressure with a fan required versus a compressor. The process is extensible to multiple adsorbent materials.


Lehigh Tech ID#111310-01



The International Energy Agency has identified reduction of carbon dioxide emissions as an “untapped market.” Gathered statistics from the agency indicated thus far the US has released nearly 6 billion tons of CO2 emissions into the atmosphere. Assuming a price of $20 per ton, the world market size for carbon capture exceeds $90 billion.[1] In 2012, the carbon capture market was estimated to be $236 billion growing at a significant rate of 21.8%.[2]

[1] “Cemtrex Commences Carbon Dioxide Capture Pilot Test Program.” eReleases web site. (accessed July 20, 2010).

[2] “Carbon Capture & Storage Technologies.” BCC Research web site. (accessed July 20, 2010).



Lehigh University is interested in identifying a corporate partner.

App Type Country Serial No. Patent No. File Date Issued Date Expire Date
Utility United States 13/302,351 8,715,394 11/22/2011 5/6/2014 6/28/2032
For Information, Contact:
Alan Snyder
VP, Research & Grad Programs
Lehigh University
Hugo Caram