A zero-emission, closed-loop and hybrid solar-produced syngas power cycle is introduced utilizing an oxygen transport reactor (OTR). The fuel is syngas produced within the cycle. The separated oxygen inside the OTR through the ion transport membrane (ITM) is used in the syngas-oxygen combustion process in the permeate side of the OTR. The combustion products in the permeate side of the OTR are CO.sub.2 and H.sub.2O. The combustion gases are used in a turbine for power production and energy utilization then a condenser is used to separate H.sub.2O from CO.sub.2. CO.sub.2 is compressed to the feed side of the OTR. H.sub.2O is evaporated after separation from CO.sub.2 and fed to the feed side of the OTR.

A chemical reaction system comprises: a supply source to generate a first carbon compound including at least one of carbon monoxide and carbon dioxide; an electrochemical reaction device to generate a second carbon compound including carbon monoxide by a reduction reaction of carbon dioxide; a reactor to generate a product including a third carbon compound by a chemical reaction of a reactant including hydrogen and at least one of the first and second carbon compounds; and a flow path through which the second carbon compound is supplied from the electrochemical reaction device to at least one of the supply source and the reactor.

A power generation system that includes a membrane reformer assembly, wherein syngas is formed from a steam reforming reaction of natural gas and steam, and wherein hydrogen is separated from the syngas via a hydrogen-permeable membrane, a combustor for an oxy-combustion of a fuel, an expander to generate power, and an ion transport membrane assembly, wherein oxygen is separated from an oxygen-containing stream to be combusted in the combustor. Various embodiments of the power generation system and a process for generating power using the same are provided.

A catalytic burner arrangement is provided including at least a catalytic burner unit with a housing having a reaction chamber in which a catalyst is arranged, wherein the catalyst is adapted to react a fuel, particularly a hydrogen containing fluid, with an oxidant, particularly air, for producing heat, the housing having a fluid inlet for supplying a fluid stream into the housing and a find outlet for exiting a fluid stream from the housing, and the catalytic burner arrangement further includes a mixing unit forming a mixing chamber in which fuel and oxidant are mixed, wherein the mixing device includes a fuel inlet, an oxidant inlet and an fuel-oxidant-mixture outlet, and wherein the fluid inlet of the catalytic burner unit merges with the fuel-oxidant-outlet of the mixing unit for transferring the fuel-oxidant-mixture from the mixing chamber to the reaction chamber of the catalytic burner unit wherein the fuel-oxidant-outlet of the mixing chamber is pipe-shaped and extents into the mixing chamber of the mixing unit, and wherein a length of the pipe-shaped fuel-oxidant-outlet extents over the oxidant inlet and/or the fuel inlet.

A catalytic burner arrangement including at least a catalytic burner unit with a housing having a reaction chamber in which a catalyst is arranged is provided wherein the catalyst is adapted to react a fuel, particularly a hydrogen containing fluid, with an oxidant, particularly air, for producing heat, the housing having a fluid inlet for supplying a fluid stream into the housing and a fluid outlet for exiting a fluid stream from the housing, and the catalytic burner arrangement further includes a mixing unit forming a mixing chamber in which fuel and oxidant are mixed, wherein the mixing device includes a fuel inlet, an oxidant inlet and an fuel-oxidant-mixture outlet, and wherein the fluid inlet of the catalytic burner unit merges with the fuel-oxidant-outlet of the mixing unit for transferring the fuel-oxidant-mixture from the mixing chamber to the reaction chamber of the catalytic burner unit wherein the fuel inlet of the mixing chamber is arranged upstream of the oxidant inlet of the mixing unit.

A fuel cell system and a control method thereof are disclosed. The system includes a fuel cell stack having an anode and a cathode, an anode recirculation loop including the anode, a fuel supply device for providing a fuel gas via a fuel feed path, an air supply device for providing air to the cathode, an anode blower and a switching element. The loop has a first path and a second path, and the anode is arranged in the second path. During normal operation of the system, the fuel feed path and the first path are combined to form the second path, and the second path is split into the first path and a fuel exhaust path. The anode blower is configured for driving circulation through the loop. The switching element is located in at least one of the first path and the combining point and is configured to force the fuel gas to flow through the second path to the fuel exhaust path in the event of failure of the anode blower.

A process for producing methane from a biomass, biomass-containing and/or biomass-derived feedstock is provided. The process comprises: a) providing in a hydropyrolysis reactor vessel a hydropyrolysis catalyst composition, said composition comprising one or more active metals supported on an oxide-based support, said one or more active metals comprising at least one of cobalt and nickel and said one or more active metals being present in total in an amount in the range of from 2 to 75 wt % based on the overall weight of the catalyst composition; b) contacting the feedstock with said hydropyrolysis catalyst composition and molecular hydrogen in said hydropyrolysis reactor vessel, to produce a first product stream comprising char, catalyst fines and gases comprising hydrogen and hydrocarbons, of which hydrocarbons at least 70 wt % is methane and, optionally, CO and CO.sub.2; and c) removing said char and catalyst fines from said first product stream.

A process for removing hydrogen and methanol from a CO2 stream which contains hydrogen and methanol as contaminants, wherein hydrogen and methanol are removed by contacting the CO2 stream with a catalyst which oxidizes hydrogen to water and methanol to carbon dioxide, obtaining a purified CO2 stream.

A method for producing hydrogen product having a low carbon intensity is provided. The method includes the steps of: (a) converting a hydrocarbon feedstock to a hydrogen product using a hydrocarbon reforming process; (b) providing at least some of the required energy for the hydrogen production process from a biomass power plant; and (c) processing one or more flue gas streams from the biomass power plant in a carbon capture unit to reduce CO.sub.2e emissions. The hydrogen product has a carbon intensity preferably less than about 1.0 kg CO.sub.2e/kg H.sub.2, more preferably less than 0.45 kg CO.sub.2e/kg H.sub.2, and most preferably less than 0.0 kg CO.sub.2e/kg H.sub.2.

A method for producing hydrogen product having a low carbon intensity is provided. The method includes the steps of: (a) converting a hydrocarbon feedstock to a hydrogen product using a hydrocarbon reforming process; (b) providing at least some of the required energy for the hydrogen production process from a biomass power plant; and (c) processing one or more flue gas streams from the biomass power plant in a carbon capture unit to reduce CO.sub.2e emissions. The hydrogen product has a carbon intensity preferably less than about 1.0 kg CO.sub.2e/kg H.sub.2, more preferably less than 0.45 kg CO.sub.2e/kg H.sub.2, and most preferably less than 0.0 kg CO.sub.2e/kg H.sub.2.