Abstract: Soot removal process at or inside a synthesis gas- and/or CO-containing gas production apparatus using as feed gases carbon dioxide, steam, hydrogen and/or a hydrocarbon-containing residual gas and using electrical energy in RWGS processes, electrolyses for electrochemical decomposition of carbon dioxide and/or steam, reforming operations and/or synthesis gas production processes with at least one gas production unit, an electrolysis stack and/or a heater-reactor combination for performing an RWGS reaction and at least one cooling sector/recuperator for CO-containing gas and/or synthesis gas, and also a soot removal assembly. Formation of soot can be suppressed or prevented during gas cooling and soot that is nevertheless deposited can be removed again from the heat exchanger surface.

Abstract: A synthesis gas production process from CO2 and H2O with a co-electrolysis, wherein the CO2 and CH4 content of the produced gas is reduced on the cathode side.

Abstract: Soot removal process at or inside a synthesis gas- and/or CO-containing gas production apparatus using as feed gases carbon dioxide, steam, hydrogen and/or a hydrocarbon-containing residual gas and using electrical energy in RWGS processes, electrolyses for electrochemical decomposition of carbon dioxide and/or steam, reforming operations and/or synthesis gas production processes with at least one gas production unit, an electrolysis stack and/or a heater-reactor combination for performing an RWGS reaction and at least one cooling sector/recuperator for CO-containing gas and/or synthesis gas, and also a soot removal assembly. Formation of soot can be suppressed or prevented during gas cooling and soot that is nevertheless deposited can be removed again from the heat exchanger surface.

Abstract: A synthesis gas production process from CO2 and H2O with a co-electrolysis, wherein the CO2 and CH4 content of the produced gas is reduced on the cathode side.

Abstract: A process for the production of synthetically produced methane (57)/gaseous and/or liquid hydrocarbons (114, 115, 116, 117). For this purpose, hydrogen (44, 84, 150) from an electrolytic arrangement (41, 81, 151, 159) which is operated by means of regeneratively generated electric energy and carbon dioxide (19, 46, 86) are synthesized in a methane synthesis (FIGS. 2-48) or Fischer-Tropsch synthesis (FIGS. 3-96) or other suitable hydrocarbon synthesis, the carbon dioxide (19, 46, 86) being produced from an air/gas flow (3, 134) by means of a carbon dioxide recovery system (FIG. 1). The carbon dioxide (19, 46, 86) is obtained from the air/gas flow (3, 134) in the carbon dioxide recovery system (FIG. 1) by way of a reversible adsorption process.

Abstract: A heat management method in a high-temperature steam electrolysis [SOEC] (FIG. 1), to solid oxide fuel cells [SOFCs] (FIG. 2) and/or to a reversible high-temperature fuel cell having the SOEC and SOFC modes of operation [rSOC] (FIG. 1/2). The steam required (1) is supplied from at least one external source and at least one offgas stream (4, 12, 12a) is cooled at least once (3, 11, 18, 35) downstream of the cell [SOEC, SOFC, rSOC] (5, 5a). The internal generation of steam required (1, 38) is effected by internal recuperative heating of externally supplied water (47, 48, 51). The energy from the at least one cooling operation (3, 11, 18, 35) of the at least one offgas stream to be cooled (4, 4a, 12, 12a, 17, 20, 34, 36) is used for this purpose, and at the same time the external steam supply (1, 38) is reduced or shut down.

Abstract: A process for the production of synthetically produced methane (57)/gaseous and/or liquid hydrocarbons (114, 115, 116, 117). For this purpose, hydrogen (44, 84, 150) from an electrolytic arrangement (41, 81, 151, 159) which is operated by means of regeneratively generated electric energy and carbon dioxide (19, 46, 86) are synthesized in a methane synthesis (FIGS. 2-48) or Fischer-Tropsch synthesis (FIGS. 3-96) or other suitable hydrocarbon synthesis, the carbon dioxide (19, 46, 86) being produced from an air/gas flow (3, 134) by means of a carbon dioxide recovery system (FIG. 1). The carbon dioxide (19, 46, 86) is obtained from the air/gas flow (3, 134) in the carbon dioxide recovery system (FIG. 1) by way of a reversible adsorption process.