A method, a system, and an apparatus of certain embodiments are provided to recover water and carbon dioxide from combustion emissions. The recovery includes, among other things, electrolysis and carbon dioxide capture in a suitable solvent. The recovered water and carbon dioxide are subject to reaction, such as a catalytic methanation reaction, to generate at least methane.

Electrosynthesis of oxirane can include contacting a halide electrolyte with an anode and cathode respectively located in anodic and cathodic compartments; supplying olefin reactants into the electrolyte in the anodic compartment, such that the anode generates ethylene chlorohydrin; withdrawing a loaded anodic solution comprising ethylene halohydrin from the anodic compartment, and a loaded cathodic solution comprising OH.sup.- ions from the cathodic compartment; and mixing the loaded anodic solution with the loaded cathodic solution under conditions to react ethylene halohydrin with OH- to produce oxirane. The electrocatalyst can include iridium oxide on a titanium substrate, with the iridium oxide provided as nanoparticles on a titanium mesh, and the electrolyte can be aqueous KCl. The electrocatalyst can define an extended heterogenous:homogenous interface with halide ions acting as a reservoir for positive charges, thereby storing and redistributing positive charges to promote selective generation of ethylene halohydrins.

A process and system for generating hydrogen gas are described, in which water is electrolyzed to generate hydrogen and oxygen, and a feedstock including oxygenate(s) and/or hydrocarbon(s), is non-autothermally catalytically oxidatively reformed with oxygen to generate hydrogen. The hydrogen generation system in a specific implementation includes an electrolyzer arranged to receive water and to generate hydrogen and oxygen therefrom, and a non-autothermal segmented adiabatic reactor containing non-autothermal oxidative reforming catalyst, arranged to receive the feedstock, water, and electrolyzer-generated oxygen, for non-autothermal catalytic oxidative reforming reaction to produce hydrogen. The hydrogen generation process and system are particularly advantageous for using bioethanol to produce green hydrogen.

Provided herein are systems and methods for controlling production of low-carbon liquid fuels and chemicals. In an aspect, provided herein is a method controlling a process that produces e-fuels. In another aspect, provided herein is a system for producing an e-fuel.

A method of compressing carbon dioxide, CO2, including a) generating a stream of high-pressure oxygen gas and a stream of high-pressure hydrogen gas using a high-pressure electrolyser, b) feeding a reciprocating positive displacement pump comprising a reciprocating member, with a stream of CO2, and with the stream of high-pressure oxygen gas as drive gas to actuate the reciprocating member and compress the CO2 to obtain a stream of high-pressure CO2.

An integrated process for the production of a useful liquid hydrocarbon product comprises: feeding a gasification zone with an oxygen-containing feed and a first carbonaceous feedstock comprising waste materials and/or biomass, gasifying the first carbonaceous feedstock in the gasification zone to produce first synthesis gas, partially oxidising the first synthesis gas in a partial oxidation zone to generate partially oxidised synthesis gas, combining at least a portion of the first synthesis gas and/or the partially oxidised synthesis gas and at least a portion of electrolysis hydrogen obtained from an electrolyser in an amount to achieve the desired hydrogen to carbon monoxide molar ratio of from about 1.5:1 to about 2.5:1, and to generate a blended synthesis gas, wherein the electrolyser operates using green electricity; and subjecting at least a portion of the blended synthesis gas to a conversion process effective to produce the liquid hydrocarbon product.

A system optionally including a carbon oxide reactor. A method for carbon oxide reactor control, optionally including selecting carbon oxide reactor aspects based on a desired output composition, running a carbon oxide reactor under controlled process conditions to produce a desired output composition, and/or altering the process conditions to alter the output composition.

A system and method for producing liquid hydrocarbons is disclosed. In one embodiment, the system includes at least one renewable power system configured to generate a DC electric power output; at least one water electrolysis system in electrical communication with the renewable power system and configured to utilize the DC electric power to produce a hydrogen output; and a liquid hydrocarbon synthesis system in fluid communication with the water electrolysis system and configured to utilize the hydrogen output and a carbon dioxide feed to produce a liquid hydrocarbon product.

This invention relates to system for the production of ammonia synthesis gas, comprising: one or more electrically driven air separation unit(s) configured to separate nitrogen from air; and one or more solid oxide electrolysis cell(s) configured to produce hydrogen by solid oxide electrolysis of steam in thermoneutral or endothermal mode. By configuring the electrically driven air separation unit(s) and the solid oxide electrolysis cell(s) so that heat emanating from the one or more electrically driven air separation unit(s) is transferred to the one or more solid oxide electrolysis cell(s), nitrogen production may be integrated while enabling high current density, the use of large SOEC stacks and improved reactant conversion. In addition, ammonia production plants comprising the above system as well as related methods are described.

A method of producing a syngas composition includes hydrolyzing a metal halide salt to form a hydrohalic acid and a hydroxide salt of the metal in the metal halide salt. The metal includes an alkaline earth metal or an alkali metal. The method includes reacting the hydrohalic acid with a metal carbonate salt, wherein the metal carbonate salt is a carbonate salt of the alkaline earth metal or alkali metal, to form CO.sub.2 and the metal halide salt. At least some of the metal halide salt formed from the reacting of the hydrohalic acid with the metal carbonate salt is recycled as at least some of the metal halide salt in the hydrolyzing of the metal halide salt to form the hydrohalic acid and the hydroxide salt. The method also includes electrolytically converting the CO.sub.2 and the water into the syngas composition including carbon monoxide and hydrogen.