A method and to a device for producing a synthesis gas, which contains carbon monoxide and hydrogen, wherein natural gas having a first carbon dioxide partial pressure (CO.sub.2 pressure) is provided and is processed inter alia by means of a pressure increase to form a natural gas input for a thermochemical conversion, in which a synthesis raw gas having a second CO.sub.2 pressure greater than the first CO.sub.2 pressure is produced, from which synthesis raw gas at least carbon dioxide is subsequently separated in order to obtain the synthesis gas and carbon dioxide, at least some of which is returned and is used in the thermochemical conversion of the natural gas input. To separate carbon dioxide, the synthesis raw gas is conducted across the one membrane on the retentate side, which membrane is permeable to carbon dioxide and is flushed on the permeate side by the provided natural gas.

A method of producing hydrogen using biomass includes: pretreating the biomass using an ionic liquid; and extracting hydrogen by reacting the pretreated biomass with an alkaline substance.

Systems and methods for generating power using hydrogen fuel, such as derived from natural gas, are provided. Feed materials are introduced into a compact hydrogen generator to produce carbon dioxide, hydrogen gas and steam. Sorbent material within the compact hydrogen generator acts to absorb carbon dioxide, forming a used sorbent. Hydrogen gas and steam are separated from the used sorbent and passed to a power generator such as a hydrogen turbine to produce power. The used sorbent is introduced into a calciner and heated to desorb carbon dioxide and form a regenerated sorbent which can be recycled to the compact hydrogen generator.

Process control parameters for production of hydrogen and FT products by steam/CO2 reforming include controlling steam reformer temperature, addition of steam, CO and optionally, biogas. Optimization of parameters have resulted in increased production of H.sub.2, removal of sulfur and halogen contaminants, and control of the H.sub.2/CO ratio for efficient generation of Fischer-Tropsch products.

A plant and process for producing a hydrogen rich gas are provided, said process comprising the steps of: reforming a hydrocarbon feed in an autothermal reformer thereby obtaining a syngas; shifting said syngas in a shift configuration including a high temperature shift step; removal of CO.sub.2 in a CO.sub.2-removal section by amine wash thereby forming a hydrogen rich stream, a portion of which is used as low carbon hydrogen fuel, as well as a CO.sub.2-rich gas and a high-pressure flash gas stream. The high-pressure flash gas stream is advantageously integrated into the plant and process for further improving carbon capture.

A dry reforming process for producing a synthesis gas from a hydrocarbon fuel is described. A feed stream is preheated. The feed stream includes the hydrocarbon fuel and carbon dioxide. The feed stream is flowed to a reactor. The reactor includes a catalyst. Flowing the feed stream to the reactor brings the feed stream into contact with the catalyst in the absence of oxygen and causes a dry reforming reaction within the reactor for a period of time sufficient to reform the hydrocarbon fuel to produce the synthesis gas. The catalyst includes nickel (Ni), lanthanum oxide (La.sub.2O.sub.3), cerium oxide (Ce.sub.2O.sub.3), and platinum (Pt).

A process and/or system for producing fuel that includes providing biogas, removing carbon dioxide from the biogas, transporting the upgraded biogas to a hydrogen plant; providing the transported upgraded biogas and fossil-based natural gas as feedstock for hydrogen production. The carbon intensity of the fuel is less than 11 gCO.sub.2-eq/MJ, at least in part because carbon dioxide removed from the biogas and carbon dioxide from hydrogen production is captured and stored.

The present invention describes a processes, systems, and catalysts for the utilization of carbon dioxide into high quality synthesis gas that can then be used to produce fuels (e.g., diesel fuel) and chemicals. In one aspect, the present invention provides a process for the conversion of a feed gas comprising carbon dioxide and hydrogen to a product gas comprising carbon monoxide and water.

A system includes a digestion system configured to convert a digestate into a fuel gas, and a fuel cell power system configured to convert the fuel gas into power and heat, and to provide the heat to the digestion system.

Process and apparatus for producing a low-nitrogen synthesis gas from a natural gas containing nitrogen and carbon dioxide, from which water and carbon dioxide are removed in a first temperature swing adsorption plant and subsequently nitrogen is removed in a cryogenic gas fractionator, to give a low-nitrogen, water-free and carbon dioxide-free natural gas, which is next supplied to a thermochemical conversion, so as to recover a crude syngas comprising hydrogen, carbon monoxide, water and carbon dioxide, from which the low-nitrogen synthesis gas is obtained at least by the removal of water and carbon dioxide in a second temperature swing adsorption plant. The characteristic feature here is that at least a part of the low-nitrogen, water-free and carbon dioxide-free natural gas prior to its thermochemical conversion is used as regenerating gas in the regeneration of the first and/or second temperature swing adsorption plant.