A method of producing hydrogen in a plant for hydrogen production during combustion of a mixture of hydrocarbon feedstock with an oxidizer with an oxidant excess ratio of less than 1. The method is characterized in that the combustion process is carried out at a temperature of less than 1400 K inside several cavities, completely or partially formed by a material permeable to a mixture of hydrocarbon feedstock with an oxidant.

A system having a catalytic partial oxidation (CPO) reactor to produce, from a CPO reactant mixture, a CPO reactor effluent characterized by a hydrogen to carbon monoxide (H2/CO) molar ratio and a M ratio defined as (H2−CO2)/(CO+C=2). The system includes a water-gas shift (WGS) reactor configured to produce a hydrogen enriched reactor effluent from at least a portion of the CPO reactor effluent, wherein the hydrogen enriched reactor effluent is characterized by a H2/CO molar ratio that is greater than the H2/CO molar ratio of the CPO reactor effluent. The system includes a CO2 separator operable to remove a portion of the CO2 from the hydrogen enriched reactor effluent to yield the syngas, wherein the syngas is characterized by a M ratio that is greater than the M ratio of the CPO reactor effluent and of the hydrogen enriched reactor effluent. Processes for producing the syngas and producing methanol therefrom are also provided.

A hydrogen production system including a steam reformer unit, a steam addition line arranged to add steam upstream the steam reformer unit, a hydrogen membrane unit comprising a hydrogen permeable membrane and being arranged to allow at least a part of a reformed stream and a hydrocarbon feed stream to pass on different sides of a hydrogen permeable membrane, so that hydrogen passes from the reformed stream into the hydrocarbon feed stream, thereby forming said hydrogen enriched hydrocarbon stream, and a separation unit downstream the first side of the hydrogen membrane unit, where the separation unit is arranged to separating the reformed stream exiting the first side of the hydrogen membrane unit into a hydrogen product gas and an off-gas.

The invention relates to a chemical plant comprising a reforming section arranged to receive a feed gas comprising hydrocarbons and provide a synthesis gas, wherein the reforming section comprises: an electrically heated reforming reactor housing a first catalyst, said electrically heated reforming reactor being arranged for receiving said feed gas and generating a first synthesis gas; and an autothermal reforming reactor downstream said electrically heated reforming reactor, said autothermal reforming reactor housing a second catalyst, said autothermal reforming reactor being arranged for receiving said first synthesis gas and outputting a second synthesis gas, wherein said reforming section is arranged to output said output synthesis gas comprising said second synthesis gas. The invention also relates to a process for producing a chemical product from a feed gas comprising hydrocarbons, in a chemical plant according to the invention.

The disclosure relates to a process to perform an endothermic steam reforming of hydrocarbons, said process comprising the steps of providing a fluidized bed reactor comprising at least two electrodes and a bed comprising particles, wherein the particles are put in a fluidized state to obtain a fluidized bed; heating the fluidized bed to a temperature ranging from 500° C. to 1200° C. by passing an electric current through the fluidized bed to conduct the endothermic reaction. The process is remarkable in that the particles of the bed comprise electrically conductive particles and particles of a catalytic composition, wherein at least 10 wt. % of the particles are electrically conductive particles and have a resistivity ranging from 0.001 to 500 Ohm.Math.cm at 800° C. and in that the step of heating the fluidized bed is performed by passing an electric current through the fluidized bed.

Disclosed is an absorbent containing an amine for absorption of an acid gas in a biogas, and a biogas purification system using the same.

Systems and methods for sequestering carbon, evolving hydrogen gas, producing iron oxide as magnetite, and producing magnesium carbonate as magnesite through sequential carbonation and serpentinization/hydration reactions involving processed olivine- and/or pyroxene-rich ores, as typically found in mafic and ultramafic igneous rock. Precious or scarce metals, such nickel, cobalt, chromium, rare earth elements, and others, may be concentrated in the remaining ore to facilitate their recovery from any gangue material.

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.

Disclosed is an adsorbent containing a metal oxide for adsorption of hydrogen sulfide in biogas, and a biogas purification system using the same.

Provided is a method for preparing synthesis gas, and more particularly, a method for preparing synthesis gas including: supplying a pyrolysis gas oil (PGO) stream including a PGO discharged from a naphtha cracking center (NCC) process to a distillation tower; and supplying a lower discharge stream from the distillation tower and a pyrolysis fuel oil (PFO) stream including a PFO discharged from the naphtha cracking center (NCC) process to a combustion chamber for a gasification process as a feed stream to obtain synthesis gas.