A gas turbine engine includes a cracking device that is configured to decompose an ammonia flow into a flow that contains more hydrogen (H.sub.2) than ammonia (NH.sub.3), a first separation device that separates hydrogen downstream of the cracking device, wherein residual ammonia and nitrogen are exhausted as a residual flow. The separated flow contains more hydrogen than ammonia, and nitrogen is exhausted separately as a hydrogen flow. A combustor is configured to receive and combust the hydrogen flow from the separation device to generate a gas flow. A compressor section is configured to supply compressed air to the combustor. A turbine section is in flow communication with the gas flow produced by the combustor and is mechanically coupled to drive the compressor section.

A method for thermal or thermochemical conversion of ammonia or methanol feedstocks into hydrogen (gas) in a related feedstock conversion facility is provided. The method comprises generating heated fluidic medium by at least one rotary apparatus, supplying a stream of thus generated heated fluidic medium into the feedstock conversion facility, and operating said at least one rotary apparatus and said feedstock conversion facility to carry out thermal or thermochemical conversion of the ammonia or methanol feedstocks into hydrogen at temperatures essentially equal to or exceeding about 500 degrees Celsius ( C.). Facility for production of hydrogen from ammonia or methanol feedstocks is further provided.

A method of generating electricity with a fuel cell includes a phase in which the cell is primed; and a phase in which the cell functions at a stable rate, during which the cell, fed with a hydrogenated gas, generates electricity and heat. In order to prime the cell, it is fed with a hydrogenated gas including at least 70 vol. % hydrogen, generated by self-sustaining combustion of at least one hydrogenated gas-generating solid pyrotechnic charge; and while it is operating at a stable rate, the cell is fed with a hydrogenated gas containing at least 85 vol. % hydrogen, generated by thermal decomposition of at least one hydrogenated gas-generating solid pyrotechnic charge; a portion of the heat produced by the operating cell being transferred to the at least one solid charge in order to start and maintain the thermal decomposition thereof.

Gas separation processes are provided for separating dehydrogenation reaction products from a raw gas stream to recover hydrocarbons, specifically olefins, such as propylene and iso-butene, as well as unreacted feedstock. The processes employ a sequence of partial condensation steps, interspersed with membrane separation steps to raise the hydrocarbon dewpoint of the uncondensed gas, thereby avoiding the use of low-temperature or cryogenic conditions.

A catalyst for catalytic reactors of which the outer shape is a helix with n blades, where n is greater than or equal to 1, wherein the stack void fraction percentage is between 75% and 85% and the surface area/volume ratio is greater than 1000 square meters/square meters.

A feedstock gas, such as natural gas, is introduced into a mixing chamber. A combustible gas is introduced into a combustion chamber, for example simultaneously to the introduction of the feedstock gas. Thereafter, the combustible gas is ignited so as to cause the combustible gas to flow into the mixing chamber via one or more fluid flow paths between the combustion chamber and the mixing chamber, and to mix with the feedstock gas. The mixing of the combustible gas with the feedstock gas causes one or more products to be produced.

Chemical systems and methods for synthesis gas (syngas) production relying on pyrolysis gases containing a pyrolysis carbon product and pyrolysis-derived hydrogen from a pyrolysis reactor that pyrolyzes a hydrocarbon feedstock. A high-temperature carbon separation mechanism separates the pyrolysis carbon product from the pyrolysis gases while maintaining their temperature above 800? C. A carbon dioxide source provides a gas stream primarily made up of a carbon dioxide gas. The hot pyrolysis gases containing pyrolysis-derived hydrogen and the carbon dioxide gas are sent to a reverse water gas shift reactor to react the pyrolysis gases with carbon dioxide to form the syngas. The syngas thus formed in the reverse water gas shift reactor can be used in many types of downstream systems and applications, including in reducing a metal oxide such as iron ore or other metal oxide to obtain a metal oxide reduction product. Recycling and heat exchange are provided for achieving further system efficiencies.

The present invention relates to an installation for the production of dihydrogen comprising: a reaction enclosure (1) intended to contain an oxidizable material, an alkaline solution feed system (2) fluidly connected to the reaction enclosure (1), a pure water (31) supply system (3) fluidly connected to the reaction enclosure (1), a dihydrogen collection system (4) downstream of the reaction enclosure (1), the collection system (4) being fluidly connected: to the reaction enclosure (1), to the supply system (3), and to a storage receptacle (5) configured to store the produced dihydrogen at a desired high pressure.

This invention relates to a process for converting a carbonaceous material to a desired product comprising methane, methanol and/or dimethyl ether, the process comprising: gasifying the carbonaceous material at a temperature in excess of about 700 C. to form synthesis gas; and flowing the synthesis gas through two or more reaction zones in a microchannel reactor to convert the synthesis gas to the desired product.

A system includes a radiant syngas cooler which receives and cools syngas generated in a gasifier. The radiant syngas cooler includes an outer shell of the radiant syngas cooler defining an annular space of the radiant syngas cooler and a heat exchange tube of the radiant syngas cooler positioned within the annular space and configured to flow a cooling medium. The heat exchange tube is configured to enable heat exchange between the syngas and the cooling medium to cool the syngas. The radiant syngas cooler includes a downcomer tube of the radiant syngas cooler which supplies the cooling medium to the heat exchange tube, where the downcomer tube includes a downflow portion positioned outside of the annular space of the radiant syngas cooler. The downflow portion is fluidly coupled to a header, and the header fluidly couples the downcomer tube to the heat exchange tube.