[Task] To avoid use of direct fire and suppress CO.sub.2 emission when heating a heat medium used to input heat to dehydrogenation reaction of hydrogenated aromatics.

[Solution] A hydrogen station 1 includes: a dehydrogenation reactor 23 that produces hydrogen by dehydrogenation reaction of a hydrogenated aromatic in presence of a dehydrogenation catalyst; a heat supply device 26 that supplies heat to the dehydrogenation reactor via a heat medium heated by using fuel; and a PSA device 33 that purifies a reaction product gas in the dehydrogenation reactor by using an adsorbent according to a pressure swing adsorption method, wherein the PSA device is supplied with a purge gas containing hydrogen used in regeneration of the adsorbent, the heat supply device includes a storage tank 27 storing the heat medium and a catalytic combustion tube 28 disposed in the storage tank to catalytically combust the fuel in presence of a combustion catalyst, and the catalytic combustion tube is supplied with the purge gas discharged from the PSA device as the fuel together with air.

The present disclosure provides systems and methods for hydrogen production as well as apparatuses useful in such systems and methods. Hydrogen is produced by steam reforming of a hydrocarbon in a gas heated reformer that is heated using one or more streams comprising combustion products of a fuel in an oxidant, preferably in the presence of a carbon dioxide circulating stream.

The present disclosure provides systems and methods for hydrogen production as well as apparatuses useful in such systems and methods. Hydrogen is produced by steam reforming of a hydrocarbon in a gas heated reformer that is heated using one or more streams comprising combustion products of a fuel in an oxidant, preferably in the presence of a carbon dioxide circulating stream.

Hydrogen-fueled gas turbine power system comprising a compressor (22), a combustor (24) and a turbine (26) as well as a fuel supply device (10). The fuel supply device (10) has the form of a hydrogen gas producing reactor system with at least one reactor (12) based on sorption enhanced steam methane reforming (SE-SMR) and/or sorption enhanced water gas shift (SE-WGS) of syngas The reactor (12) is connected in a closed loop with a regenerator (14) for circulating and regenerating a CO.sub.2 absorber between the reactor (12) and the regenerator (14). Additionally, there is a closed heat exchange loop (21) between the regenerator (14) of the hydrogen gas producing reactor system (10) and the downstream end of the combustor (24) or the upstream end of the turbine (26). A method of its use is also contemplated.

The present application provides a system and a method for water-based chemical-looping hydrogen generation. The method for water-based chemical-looping hydrogen generation comprises a water-based reduction process of oxygen carrier and a water-based oxidation process of oxygen carrier, wherein in the water-based reduction process of oxygen carrier, an oxygen carrier is reduced with a hydrocarbon fuel in the presence of a steam to produce a hydrogen gas as well as a reduced oxygen carrier and a carbon dioxide; and in the water-based oxidation process of oxygen carrier, the reduced oxygen carrier is oxidized with the steam to produce the hydrogen gas, while the reduced oxygen carrier is oxidized to its original state, thereby forming a chemical-looping. The present application can reduce the energy consumption while improving the efficiency of the hydrogen generation, enabling a zero energy consumption separation of carbon dioxide in the hydrogen generation process.

A method for recovering hydrogen which is capable of efficiently recovering high concentration hydrogen gas by adsorbing and removing hydrocarbon gas such as carbon dioxide from biomass pyrolysis gas under a relatively low pressure, and also capable of storing the recovered high concentration hydrogen gas, preferably, in a cartridge type container that can be used as is as a hydrogen storing container for an apparatus equipped with a fuel cell. The method includes a first purifying stare of purifying biomass pyrolysis gas and a second purifying stage of purifying the obtained purified gas under a pressure equal to or less than the pressure in the first purifying stage to recover gas that contains hydrogen, and further includes a hydrogen storing stage of feeding the gas containing hydrogen recovered in the second purifying stage into the container filled with a hydrogen storage alloy and storing high purity hydrogen.

The present invention relates to processes for the preparation of biofuel from biomass by fast hydropyrolysis or fast pyrolysis, using hydrogen generated by sorption enhanced steam reforming. The present invention also relates to fixed bed tandem catalytic-upgrading processes, and reactors and hydrodeoxygenation (HDO) catalysts useful in those processes.

The present invention provides a process for the manufacture of a useful product from carbonaceous feedstock of fluctuating compositional characteristics, the process comprising the steps of: continuously providing the carbonaceous feedstock of fluctuating compositional characteristics to a gasification zone; gasifying the carbonaceous feedstock in the gasification zone to obtain raw synthesis gas; sequentially removing ammoniacal, sulphurous and carbon dioxide impurities from the raw synthesis gas to form desulphurised gas and recovering carbon dioxide in substantially pure form; converting at least a portion of the desulphurised synthesis gas to a useful product. Despite having selected a more energy intensive sub-process i.e. physical absorption for removal of acid gas impurities, the overall power requirement of the facility is lower on account of lower steam requirements and thereby leading to a decrease in the carbon intensity score for the facility.

The present disclosure provides compositions including method of producing H.sub.2, variable volume reactors, methods of using variable volume reactors, and the like.

Proposed is a process and a plant for production of pure carbon monoxide and hydrogen by steam reforming of hydrocarbons, preferably methane or naphtha, to afford a raw synthesis gas and subsequent, multistage workup, purification and fractionation of the raw synthesis gas to afford the target products, wherein the material streams obtained as by-products of the process chain are also to be advantageously utilized. This is achieved according to the invention by providing the recirculating compressor provided for recycling of the by-product material streams with a plurality of parallel, independently operable compressor stages.