Disclosed is a method of operating adsorption beds of the type which are regenerable with heat and a bed which exploits the method. By altering the timing of the beginning and termination of the adsorption stage, the regeneration stage, and the cooling stage, it is possible to significantly reduce energy...http://www.google.com.au/patents/US4324564?utm_source=gb-gplus-sharePatent US4324564 - Adsorption beds and method of operation thereof
