Process for the production of hydrogen with total capture of CO2 and reduction of non-converted methane

摘要

Producing hydrogen from hydrocarbon charge and water vapor comprises: transferring a portion of the charge towards a steam reforming (11) unit, and another part of the charge directly to an autothermal reformer (16), by mixing with effluent obtained from the unit; steam reforming of hydrocarbon charge in the unit; autothermal reforming of obtained flux and the charge sent directly to autothermal reformer; steam conversion of synthesis gas to convert carbon monoxide and for increasing the hydrogen flow; and capturing carbon dioxide in flux to separate carbon dioxide from hydrogen flux. Producing hydrogen from a hydrocarbon charge and water vapor comprises: transferring a portion of the hydrocarbon charge towards a steam reforming unit (11), and another part of the hydrocarbon charge directly to an autothermal reformer (16), by mixing with the effluent obtained from a steam reforming unit; steam reforming of hydrocarbon charge in a steam reforming unit; autothermal reforming of the flux obtained in the previous step and the hydrocarbon charge sent directly to an autothermal reformer; steam conversion of synthesis gas obtained in previous step to convert carbon monoxide and for increasing the hydrogen flow; and capturing carbon dioxide present in the flux obtained in conversion step to the steam to separate carbon dioxide from hydrogen flux.