Invention presents a method of increasing the CO to H.sub.2 ratio of syngas. The method comprises passing syngas over a first rector (10) containing Cu at a first temperature effective for the reaction of CO.sub.2 within the syngas with the Cu to form copper oxide and CO. The temperature of the syngas is then reduces to a second temperature effective for the for the reaction of hydrogen within the syngas with copper oxide to form Cu and H.sub.2O. The syngas is then passed over a second rector (12) containing copper oxide so that the H.sub.2 within the syngas reacts with the copper oxide.

A process for the production of synthesis gas by the use of autothermal reforming in which tail gas from downstream Fischer-Tropsh synthesis is hydrogenated and then added to the autothermal reforming stage.

A process for the production of synthesis gas by the use of autothermal reforming in which tail gas from downstream Fischer-Tropsh synthesis is hydrogenated and then added to the autothermal reforming stage.

A method for the generation of a gas mixture including carbon monoxide, carbon dioxide, and hydrogen for use in hydroformylation plants, including: evaporating water to steam; feeding the steam to a solid oxide electrolysis cell (SOEC) while supplying an electrical current to the SOEC to effect a partial conversion of steam to hydrogen; utilizing the effluent SOEC gas including H.sub.2 together with CO.sub.2 from an external source as feed for a RWGS reactor in which the RWGS reaction takes place, converting some of the CO.sub.2 and H.sub.2 to CO and H.sub.2O; removing some of or all the remaining steam from the raw product gas stream by cooling the raw product gas stream allowing for condensation of at least part of the steam as liquid water and separating the remaining product gas from the liquid; using the gas mixture for liquid phase hydroformylation, while recycling CO.sub.2 to the RWGS reactor.

Provided are a method for manufacturing syngas including the steps of (S1) heat-treating organic waste in a first reactor to produce a first mixed gas; (S2) introducing the first mixed gas to a second reactor and subjecting it to methane reforming in the presence of a catalyst to produce a second mixed gas; (S3) separating the catalyst and carbon dioxide from the second mixed gas and recovering a third mixed gas from which the catalyst and the carbon dioxide have been removed; (S4) converting the carbon dioxide separated in step (S3) into carbon monoxide through a reverse Boudouard reaction in a third reactor; and (S5) mixing the third mixed gas recovered in step (S3) and the carbon monoxide converted in step (S4) to produce syngas, and an apparatus for manufacturing syngas.

The invention relates to a method and an apparatus for removing impurities from a gasification gas, wherein the gasification gas which includes at least tars and/or undesired hydrocarbons is supplied to a catalytic reformer which has at least one catalyst bed, oxygen containing gas is injected onto the surface of the catalyst bed, the gasification gas is arranged to flow through the catalyst bed and arranged to contact with the oxygen containing gas in the catalyst bed, and a purified gas is discharged from the catalytic reformer. Further, the invention relates to the use of the method.

Proposed is a carbon dioxide conversion system and method. More particularly, proposed is an eco-friendly carbon dioxide conversion system and method, the system and the method returning, in the recycling of Fischer-Tropsch synthesis reaction off-gas, a part of the off-gas to a Fischer-Tropsch reactor and producing a synthetic natural gas through methanation of the remainder of the off-gas, thereby improving overall energy efficiency and carbon efficiency, and thus a useful hydrocarbon fuel is produced from carbon dioxide, thereby providing a carbon dioxide-reducing effect.

A process can be used for the treatment of an offgas stream, which is formed in a plant for the production of aluminum by electrolytic reduction of aluminum oxide in a melt, using at least one anode composed of a carbon-containing material. The offgas stream contains carbon oxides due to the reduction of the aluminum oxide by the carbon. At least a substream of the carbon oxides contained in the offgas stream is reacted with hydrogen or mixed with a hydrogen stream and is subsequently passed to a use. After purification and conditioning of the offgas stream in a device, an enrichment, for example with carbon monoxide, can subsequently be carried out in a reactor and the synthesis gas obtained in this way can be fed to a chemical or biotechnological plant for the synthesis of chemicals of value.

The present invention relates to catalyst. Co.sub.3O.sub.4 nanocube or In.sub.2O.sub.3 with novel characterization features for the synthesis of CO, which is used as a reducing agent in the production of direct reduced metal from metal ore or mixture of metal oxides.

A process for producing syngas with a H.sub.2/CO ratio of from 0.5 to 3.5, comprising: a) generating steam by burning hydrogen and oxygen in the presence of steam in a H.sub.2 burner, b) quenching the effluents from step a); c) conducting an electrolysis on steam from step b) in a solid oxide electrolytic cell (SOEC) thereby obtaining hydrogen and oxygen, d) cooling wet hydrogen gas coming from step c) and removing water by condensation; e) carrying out a reverse water gas shift reaction with hydrogen gas coming from step d) with CO2, coming from an external source, thereby obtaining syn gas; f) cooling wet syngas coming from step e) and removing water by condensation thereby obtaining dry syngas.