METHOD FOR THE REMOVAL OF TRACE COMPONENTS BY ADSORPTION

摘要

A method is described for the removal by adsorption of at least one component (trace component) present in a concentration of less than 2% by volume from a gas mixture having at least two further components (main components). This method has the following method steps according to the invention: a) feeding the crude gas at adsorption pressure, adsorption of the trace component to the adsorption medium and removal of product gas, b) heating the laden adsorption medium using a regeneration gas which has a higher temperature than the crude gas fed to the adsorber during the adsorption, which regeneration gas is provided by a regeneration gas source and which after passage through the adsorber is fed to a regeneration gas remover, and c) batchwise or continuous flow of crude and/or product gas through the adsorption medium for a period of at least 30 minutes, in which case this gas stream or gas streams, after flow through the adsorption medium, is or are fed to the regeneration gas remover and the quantitative flow rate is at most 7% of the crude or product gas flow rate fed or removed during method step a).