The present disclosure provides a method for producing a gas separation article, said gas separation article comprising: a gas separation membrane, optionally a support, and optionally an additional support, said method comprising the steps of: a) providing a matrix, said matrix having a viscosity from 1 centipoise to 40000 centipoise, said matrix comprising or consisting of one or more monomers, oligomers and/or polymers, and optionally a solvent, b) contacting the matrix of step a) with a support comprising at least one side, said at least one side facing said matrix, thereby forming (i) a matrix side contacting the support and (ii) a matrix side opposite the side contacting the support, c) optionally contacting the matrix side opposite the side contacting the support with an additional support, d) subjecting said matrix contacted with said support to one or more electric fields that is/are substantially parallel to a plane in which the support extends, or substantially perpendicular to a plane in which the support extends e) fixating the one or more monomers, oligomers and/or polymers of the matrix subjected to one or more electric fields in step d) thereby forming a solid gas separation membrane, and f) optionally removing the support and/or the additional support.

The present disclosure also gas separation article obtainable by the aforementioned method as well as use of said gas separation article for separation of gases in a gas mixture.

A process for membrane separation of a mixture containing as main, or even major, components hydrogen and carbon dioxide and also at least one other component, for example chosen from the following group: carbon monoxide, methane and nitrogen, including: heating of the mixture in the heat exchanger, permeation of the reheated mixture in a first membrane separation unit making it possible to obtain a first permeate which is a hydrogen and carbon dioxide enriched relative to the mixture, and a first residue which is hydrogen and carbon dioxide lean, permeation of the first residue in a second membrane separation unit making it possible to obtain a second residue, at least one portion of the first permeate is compressed in a booster compressor and the second residue is expanded in a turbine, the booster compressor being driven by the turbine.

The present invention provides highly permeable and porous polybenzimidazole membranes, methods of making them, and their application as a high-performance membrane support for gas separation composite membranes. The polybenzimidazole membranes are bonded to a fabric substrate.

Method and plant for generating a synthesis gas which consists mainly of carbon monoxide and hydrogen and has been freed of acid gases, proceeding from a hydrocarbonaceous fuel, and air and steam, wherein low-temperature fractionation separates air into an oxygen stream, a tail gas stream and a nitrogen stream, wherein the tail gas stream and the nitrogen stream are at ambient temperature and the nitrogen stream is at elevated pressure, wherein the hydrocarbonaceous fuel, having been mixed with the oxygen stream and steam at elevated temperature and elevated pressure, is converted to a synthesis gas by a method known to those skilled in the art, and wherein acid gas is subsequently separated therefrom by low-temperature absorption in an absorption column, wherein the nitrogen stream generated in the fractionation of air is passed through and simultaneously cooled in an expansion turbine and then used to cool either the absorbent or the coolant circulating in the coolant circuit of the compression refrigeration plant.

The invention relates to carbon supported crack- and tear-free graphene membranes of large area useful for selective gas separation, method of preparation and uses thereof. In particular, the invention relates to carbon supported crack- and tear-free graphene membranes having good gas separation performance, in particular high H.sub.2 permeance and H.sub.2/CH.sub.4 selectivities.

The invention relates to a process and a plant for producing pure hydrogen from an input gas containing hydrogen and hydrocarbons, in particular from a hydrogen-containing refinery off-gas, by steam reforming in a steam reforming stage and multi-stage hydrogen enrichment. According to the invention the input gas containing hydrogen and hydrocarbons is separated in a first hydrogen enrichment stage into a hydrogen-enriched substream and a hydrogen-depleted substream, wherein at least a portion of the hydrogen-enriched substream is supplied to a second hydrogen enrichment stage or introduced into the pure hydrogen product stream and at least a portion of the hydrogen-depleted substream is supplied to the steam reforming stage as a reforming feed stream or as part thereof and/or to the burners as a fuel gas stream.

Provided is a method for upgrading a bio-based material, the method including the steps of pre-treating bio-renewable oil(s) and/or fat(s) to provide a bio-based fresh feed material, hydrotreating the bio-based fresh feed material, followed by separation, to provide a bio-propane composition.

A plant and a method for the production of hydrogen and bicarbonate. The plant includes a gasifier, a reformer, a direct contact exchanger and an apparatus for the production of bicarbonate. The plant is suitable for receiving fuel, oxygen, water, carbonate, brine at the inlet and for producing hydrogen, bicarbonate and calcium chloride at the outlet. The plant uses a self-cleaning direct contact heat exchanger to cool the syngas downstream of the reformer and to produce the superheated steam that feeds the gasifier: this heat exchanger allows the production of hydrogen at low costs and in modular plants.

Disclosed is an apparatus and method for mixing transmission and separation of hydrogen gas and natural gas recovered based on pressure energy. The method includes: (1) hydrogen compressed natural gas is introduced into the pressure energy recovery system; (2) the low-pressure hydrogen compressed natural gas is introduced into the separation system; (3) the low-hydrogen natural gas and the, high concentration hydrogen gas are introduced into a first natural gas buffer tank and a first hydrogen gas buffer tank respectively; (4) the low-hydrogen natural gas and the high concentration hydrogen gas are introduced into the pressure boosting system; (5) the low-hydrogen natural gas and the high concentration hydrogen gas are respectively introduced into a natural gas user end. The method of the present invention is low in energy consumption, so as to realize pressure energy recovery, and energy consumption of hydrogen gas separation is greatly reduced.

Disclosed herein is a method for making hydrogen with carbon sequestration. The method may comprise using a biomass hydroconverter product to fuel a steam reformer that converts a hydrocarbon fuel stream into a gas mixture that contains at least hydrogen and carbon dioxide. The gas stream is separated to form a hydrogen-enriched gas stream and at least one hydrogen-depleted stream. The hydrogen-depleted stream may be stored or further processed to sequester the carbon contained therein. Additionally, or alternatively, the solid residue from the biomass hydroconverter also may be stored for further sequester carbon generated by the method.