A process of catalytically dehydrogenating an alkane to an alkene, using Cr.sub.2O.sub.3 as a catalyst, where the catalyst is reduced concurrently with the dehydrogenation by using CO as a reducing gas. In reducing the catalyst with CO, CO.sub.2 is produced, which may be reacted with H.sub.2 produced by the dehydrogenation, to form CO and H.sub.2O by the reverse water-gas shift reaction. A Cu O heat-releasing material may be included with the catalyst in the reactor. The CO reducing gas reduces CuO to form Cu and CO.sub.2, releasing heat. The CO.sub.2 produced by reducing the Cu O may also be reacted with H.sub.2 produced by the dehydrogenation, to form CO and H.sub.2O by the reverse water-gas shift reaction.

A process for producing a gas stream comprising carbon monoxide comprising the steps of (a) feeding a gas mixture comprising carbon dioxide and hydrogen to a burner and combusting it with a sub-stoichiometric amount of an oxygen gas stream to form a combusted gas mixture comprising carbon monoxide, carbon dioxide, hydrogen and steam, (b) passing the combusted gas mixture through a bed of reverse water-gas shift catalyst to form a crude product gas mixture containing carbon monoxide, steam, hydrogen and carbon dioxide, (c) cooling the crude product gas mixture to below the dew point and recovering a condensate to form a dewatered product gas, (d) removing carbon dioxide from the dewatered product gas in a carbon dioxide removal unit to form the gas stream comprising carbon monoxide, and (e) combining carbon dioxide recovered by the carbon dioxide removal unit with the gas mixture comprising hydrogen and carbon dioxide.

A synthesis gas production process from CO.sub.2 and H.sub.2O with a co-electrolysis, wherein the CO.sub.2 and CH.sub.4 content of the produced gas is reduced on the cathode side.

Device and process for converting a feedstock of aromatic compounds, in which the feedstock is notably treated using a fractionation train (4-7), a xylenes separating unit (10) and an isomerization unit (11), and in which a pyrolysis unit (13) treats a second hydrocarbon-based feedstock, produces a pyrolysis effluent feeding the feedstock, and produces a pyrolysis gas comprising CO, CO2 and H2; an RWGS reverse water gas shift reaction section (51) treats the pyrolysis gas and produces an RWGS gas enriched in CO and in water; a fermentation reaction section (52) treats the RWGS gas enriched in CO and in water and produces ethanol; and an aromatization reaction section (14) converts the ethanol into a mixture of aromatic and paraffinic compounds feeding the feedstock.

The present invention describes a processes, systems, and catalysts for the conversion of carbon dioxide and water and electricity into low carbon or zero carbon high quality fuels and chemicals. In one aspect, the present invention provides an integrated process for the conversion of a feed stream comprising carbon dioxide to a product stream comprising hydrocarbons between 5 and 24 carbon atoms in length.

A plant is provided which comprises a reforming section, a gas separation section and a hydrocarbon-containing feed. The reforming section includes a heat exchange reformer and an electrical steam methane reformer (e-SMR) arranged downstream of said heat exchange reformer. The gas separation section is arranged to receive a synthesis gas stream from the reforming section and separate it into at least a condensate and a product gas. The plant is controlled by feedback control on the e-SMR.

A process for synthesising hydrocarbons is described comprising the steps of (a) making a synthesis gas comprising hydrogen, carbon monoxide and carbon dioxide from a feedstock in a synthesis gas generation unit, (b) removing carbon dioxide to produce a carbon dioxide stream and purified synthesis gas comprising hydrogen and carbon monoxide for synthesis gas in a Fischer-Tropsch hydrocarbon synthesis unit wherein (i) at least a portion of the FT water stream is fed to an electrolysis unit to provide an oxygen stream, which is fed to the synthesis gas generation unit. Carbon dioxide stream recovered from the carbon dioxide removal unit and a portion of the hydrogen stream produced by the electrolysis unit are fed to a reverse water-gas shift unit to produce a carbon monoxide stream, with carbon monoxide stream from the reverse water-gas shift unit fed to the Fischer-Tropsch hydrocarbon synthesis unit.

A plant, such as a hydrocarbon plant, is provided, which has a syngas stage (A) for syngas generation and a synthesis stage (B) where said syngas is synthesized to produce syngas derived product, such as hydrocarbon product. The syngas stage (A) primarily includes electrically heated reverse water gas shift (e-RWGS) section. Additionally, an electrically-heated steam methane reforming (e-SMR) section (II) can be arranged in parallel to the e-RWGS section (I). The plant makes effective use of various streams; in particular CO2 and H2. A method for producing a product stream, such as a hydrocarbon product stream is also provided.

A process for producing hydrogen-lean syngas includes the steps of reacting, via a catalytic partial oxidation (CPO) reaction, a CPO reactant mixture in a CPO reactor to produce the hydrogen-lean syngas, wherein the CPO reactant mixture includes hydrocarbons and oxygen. The hydrocarbons include greater than or equal to about 3 mol % C2+ alkanes, wherein the CPO reactor include a CPO catalyst, and wherein the hydrogen-lean syngas include hydrogen, carbon monoxide, carbon dioxide, water, and unreacted hydrocarbons The hydrogen-lean syngas is characterized by a molar ratio of hydrogen to carbon monoxide (H2/CO) in a range of from about 0.8 to about 1.6. A system for carrying out the process is also provided.

A plant, such as a hydrocarbon plant, is provided, which consists of a syngas stage for syngas generation and a synthesis stage where said syngas is synthesized to produce syngas derived product, such as hydrocarbon product. The plant makes effective use of various streams; in particular CO.sub.2 and H.sub.2. A method for producing a product stream, such as a hydrocarbon product stream is also provided.