Thin Film Composite Membrane for Effective Raw Biogas Upgrading to Pipeline Quality Methane

0381763 - ÚCHP 2013 CZ eng C - Konferenční příspěvek (zahraniční konf.)
Kárászová, Magda - Vejražka, Jiří - Veselý, Václav - Friess, K. - Randová, A. - Jansen, J. C. - Izák, Pavel
Thin Film Composite Membrane for Effective Raw Biogas Upgrading to Pipeline Quality Methane.
Final Program. Praha: Orgit, 2012, C5.4. ISBN 978-80-905035-1-9.
[International Congress of Chemical and Process Engineering CHISA 2012 and 15th Conference PRES 2012 /20./. Prague (CZ), 25.08.2012-29.08.2012]
Grant CEP: GA ČR GAP106/10/1194
Institucionální podpora: RVO:67985858
Klíčová slova: biogas and biomethane * permeability * fossil fuels
Kód oboru RIV: CI - Průmyslová chemie a chemické inženýrství
www.chisa.cz/2012

In this contribution we propose a method to upgrade biogas to the same quality of fuel standard natural gas. The latter contains more than 95 vol. % of methane. Using traditional membranes, such concentration of methane in the retentate could only be achieved using a multistep process. A recently proposed method for raw biogas purification from impurities and carbon dioxide by condensing water on swollen thin film composite membranes was found to be highly effective. The hydrophilic reverse osmosis membrane promotes the formation of a very thin selective water layer under condensing conditions below the dew point of the raw biogas feed. The large difference in permeability of the impurities in raw biogas (carbon dioxide, hydrogen sulfide) and methane through the water layer enables upgrading of raw biogas to biomethane quality in a single stage. Contrary to the classical purification processes, the proposed method does not require any biogas pretreatment, which makes this approach economically attractive. It represents an innovative approach to production of biomethane from biogas.
Trvalý link: http://hdl.handle.net/11104/0212158