Abstract: A pressure swing adsorption process (PSA) comprising the following steps: feeding an input gas containing H2, CO2 and impurities through a CO2 adsorbent material in a pressure vessel under a high pressure; withdrawing a first H2-rich product gas due to adsorption of CO2 in the adsorbent material; setting the pressure to an intermediate pressure causing the adsorbent material release a second gas stream; passing a CO2-rich purge stream through the adsorbent material, obtaining a purge gas; setting the pressure to a sub-atmospheric low pressure, so that a CO2-rich product gas is released under vacuum by the adsorbent material; re-pressurizing the vessel to said high pressure; said steps being performed cyclically in a pressure vessel or in a plurality of parallel pressure vessels of a multiple vessel setup.

Abstract: A temperature swing adsorption process for removing a target component from a gaseous mixture containing at least one side component besides the target component, said process being carried out in at least one reactor performing the following steps: an adsorption step (a), wherein an input stream of said gaseous mixture is contacted with a solid adsorbent selective for said target component, producing a first waste stream depleted of the target component; a heating step (b) for regeneration of the loaded adsorbent providing a first output stream containing the target component; a cooling step (c) of the regenerated adsorbent, said process also comprising: i) a preliminary heating step (a2) before said heating step (b), wherein a gaseous product containing said at least one side component is released from the adsorbent; ii) recycle of said gaseous product to a further adsorption step (a).

Abstract: A temperature swing adsorption (TSA) process for removing a target component from a gaseous mixture, where the process is carried out in a plurality of reactors. Each reactor performs the following steps: an adsorption step wherein an input stream of said gaseous mixture is contacted with a solid adsorbent selective for said target component, producing a first waste stream depleted of the target component; a heating step for regeneration of the loaded adsorbent providing a first output stream containing the target component; and a cooling step of the regenerated adsorbent.

Abstract: A temperature swing adsorption process for removing a target component from a gaseous mixture containing at least one side component besides the target component, said process being carried out in at least one reactor performing the following steps: an adsorption step (a), wherein an input stream of said gaseous mixture is contacted with a solid adsorbent selective for said target component, producing a first waste stream depleted of the target component; a heating step (b) for regeneration of the loaded adsorbent providing a first output stream containing the target component; a cooling step (c) of the regenerated adsorbent, said process also comprising: i) a preliminary heating step (a2) before said heating step (b), wherein a gaseous product containing said at least one side component is released from the adsorbent; ii) recycle of said gaseous product to a further adsorption step (a).

Abstract: A temperature swing adsorption (TSA) process for removing a target component from a gaseous mixture (111), said process being carried out in a plurality of reactors (101, 102, 103), wherein each reactor (101) performs the following steps: an adsorption step (a) wherein an input stream (111) of said gaseous mixture is contacted with a solid adsorbent selective for said target component, producing a first waste stream (112) depleted of the target component; a heating step (b) for regeneration of the loaded adsorbent providing a first output stream (115) containing the target component; a cooling step (c) of the regenerated adsorbent, said TSA process also comprising: i) a pre-cooling step (b1) before said cooling step (c), wherein the regenerated adsorbent is contacted with a waste stream (137) which is produced by the adsorption step (a) of another reactor (103) and a second output stream (116) of the target component is produced; ii) a pre-heating step (a1) after said adsorption step (a) and before said heati