Abstract: The invention relates to a process for providing a fuel gas (4) which is generated at regeneration pressure as residual gas (3) during the regeneration of a pressure swing adsorption plant (D) used for fractionation of synthesis gas (1) and after an intermediate storage in a buffering vessel (P) is passed through a control valve (Z1) in order to be passed to a burner (B) with a controlled mass flow. The characterizing feature here is that by specification of a manipulated variable (8) determined by the load on the pressure swing adsorption plant (D) the control valve (Z1) is positioned at an operating point wherein the pressure in the buffering vessel (P) is in a defined range.

Abstract: The invention relates to a method for generating a CO and an H2 product fraction, comprising the following steps: a) reforming (A) a hydrocarbon-containing feed flow (1) for generating a CO- and H2-rich synthesis gas (5), b) adsorptive separation (C) of undesirable constituents, in particular H2O and CO2, from the synthesis gas, c) separating (D) the adsorptively treated synthesis gas (7) into a CO product fraction (8) and an H2-rich fraction (9), wherein the H2-rich fraction (9) is supplied at least partially and/or at least intermittently to the adsorptive separation unit (C) as a regenerating gas, d) adsorptive hydrogen separation (E) from the H2-rich fraction (10), wherein the separated hydrogen constitutes the H2 product fraction, and e) supplying the residual gas fraction (3) from the adsorptive hydrogen separation unit (E) as heating gas to the reformation (A), wherein the reformation process (A) is operated depending on the composition of the residual gas fraction (3) supplied as heating gas to the re