Gas separation processes by pressure swing adsorption using carbon molecular sieves.

Abstract

With two different types of carbon molecular sieves Bergbau-Forschung GmbH, Essen, has developed various pressure swing adsorption processes for recovery of hydrogen, helium, carbon dioxide and methane from different feed gases. New applications have been developed and demonstrated in pilot plants: recovery of methane from mine gases and biogases in addition to recovery of carbon dioxide from off-gases. The product gases are produced either during adsorption or desorption using either a narrow or wide pore carbon molecular sieve which separates gas mixtures by different adsorption velocities or different adsorption forces.