NOVELTY - System (1) for separation of carbon dioxide (CO2) and recovery of fuel from anodic exhaust gas of molten-carbonate fuel cells comprises at least one molten-carbonate fuel cell (5) and at least one device (8) for separation of CO2.    USE - The system is useful for separating CO2 and recovering fuel from anodic exhaust gas of molten-carbonate fuel cells (claimed).    ADVANTAGE - The system has high efficiency.    DETAILED DESCRIPTION - System (1) for separation of CO2 and recovery of fuel from anodic exhaust gas of molten-carbonate fuel cells comprises at least one molten-carbonate fuel cell (5) and at least one device (8) for separation of CO2, which is supplied with anodic exhaust coming from the fuel cell and comprises at least two membrane separation stages (31, 32) in series, provided with respective heat membranes; where at least one of the stages (31, 32) has membranes selective to CO2, which are designed to remove CO2 from a gaseous flow that traverses them so as to obtain a permeate with high CO2 content; and at least one other of the stages (31, 32) has membranes provided with different selectivities in regard to hydrogen (H2) and water vapor. An INDEPENDENT CLAIM is a process for separating CO2 and recovering fuel from anodic exhaust gas of molten-carbonate fuel cells comprising: taking in a flow of anodic exhaust from an anodic compartment (6) of a molten-carbonate fuel cell (5); separating the major portion of CO2 from the anodic exhaust; recovering in distinct flows on one side vapor and on the other the majority of H2 together with other fuel gases contained in the anodic exhaust, such as CD, CH4, etc., and with a residual portion of CO2, where the process comprises at least two steps of separation in succession, conducted via respective membrane separation stages (31, 32) provided with respective heat membranes.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic view of the system (1) for separation of CO2 and recovery of fuel from anodic exhaust gas of molten-carbonate fuel cells.    System (1)    Molten-carbonate fuel cell (5)    Anodic compartment (6)    Cathodic compartment (7)    Separation device (8)    Conversion unit (9)    Burner (10)    Reformer (11)    Turbo-compressor assembly (12)    Turbine (13)    Compressor (14)    Line (22)    Membrane separation stages (31, 32)    Fuel-recovery line (33)    Heat exchanger (35)    Exhaust-gas outlet (37)    Exhaust-transfer line (38)    Residual-fuel outlet (40)    Primary supply line (41)    Vapor generator (42)    Anodic-supply line (43)