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.

A portable oxygen generating system is provided that comprises a reaction chamber, a feed system for providing and controlling hydrogen peroxide solution to the reaction chamber, and a cooling/condensing system for cooling the hot oxygen and water vapor leaving the reactor and condensing and removing water. The portable chemical oxygen generation system produces humidified, breathable oxygen, that is substantially free of hydrogen peroxide and other contaminants, at a controlled flow and temperature over an extended period of time.

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.

A process for purifying a helium containing stream, including introducing a feed gas stream into a first membrane separation unit, thereby producing a first permeate stream, and a first residue stream. Introducing the first permeate stream into a first dehydrogenation unit, thereby producing a first dehydrogenated gas stream. Introducing the first dehydrogenated gas stream into a second membrane separation unit, thereby producing a second permeate stream, and a second residue stream. Introducing the second permeate stream into a second dehydrogenation unit, thereby producing a second dehydrogenated gas stream. And introducing the second dehydrogenated gas stream into a helium pressure swing adsorption unit, thereby producing a product helium stream, and a helium-lean stream. Wherein the product helium stream contains more than 99.9% mol helium, and less than 0.1% mol hydrogen.

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 a methane reforming reaction system comprising: a reaction chamber (1), a hydrogen gas separation chamber (2) and a carbon dioxide separation chamber (3). The reaction chamber (1) is used for a methane reforming reaction between methane and steam; a hydrogen permeable membrane (4) is provided between the hydrogen gas separation chamber (2) and the reaction chamber (1) and a first outlet (6) is provided on the hydrogen gas separation chamber (2) for separating hydrogen gas produced in the reaction chamber (1); a carbon dioxide permeable membrane (5) is provided between the carbon dioxide separation chamber (3) and the reaction chamber (1) and a second outlet (7) is provided on the carbon dioxide separation chamber (3) for separating carbon dioxide produced in the reaction chamber (1); wherein the hydrogen gas in the hydrogen gas separation chamber (2) has a chemical potential less than that of the hydrogen gas in the reaction chamber (1) under a chemical equilibrium state of the methane reforming reaction; and the carbon dioxide in the carbon dioxide separation chamber (3) has a chemical potential less than that of the carbon dioxide in the reaction chamber (1) under the chemical equilibrium state of the methane reforming reaction.

The present disclosure relates to a method and a system for purifying an aqueous hydrogen peroxide solution. According to the present disclosure, it is possible to provide a method and a system for purifying an aqueous hydrogen peroxide solution, which may achieve the purity required in fine chemical fields such as the semiconductor industry field by preventing layer separation of a mixed ion-exchange resin consisting of a cation-exchange resin and an anion-exchange resin and reducing the leaching of ions from the resin during a purification process.

A bottom fraction of a product of a hydrocatalytic reaction is gasified to generate hydrogen for use in further hydrocatalytic reactions. In one embodiment, an overhead fraction of the hydrocatalytic reaction is further processed to generate higher molecular weight compounds. In another embodiment, a product of the further processing is separated into a bottom fraction and an overhead fraction, where the bottom fraction is also gasified to generate hydrogen for use in further hydrocatalytic reactions.

This disclosure presents a new device for the removal and separation of isotopes of Helium in Compressed Natural Gas, based on a system with two cascades operating together to increase, in the first cascade, the concentration of Helium in the cascade head, and at the tail of the same cascade, Helium-depleted Compressed Natural Gas is discharged, while the second cascade, fed from the head of the first cascade, allows separation of the isotopes of Helium-3 and Helium-4, discharging Helium-3 through the head of the second cascade, while Helium-4 is discharged through the tail of the second cascade, with a configuration that is efficient from the energy consumption standpoint, while using a small number of rotating parts.

The present invention relates a process and apparatus that recovers a helium rich stream from a mixed gas having low concentrations of helium therein. More specifically, the invention relates to an integrated process and apparatus for treating a mixed feed gas from an operating process that produces a fluid product from natural gas containing helium, such as processes that produce ammonia, methanol, or liquid hydrocarbons.