Disclosed is a Sabatier reactor apparatus including a carbon sorbent bed having an inlet for introducing a reactant stream to the carbon sorbent bed and an outlet for exiting a treated reactant stream from the carbon sorbent bed; and a Sabatier reactor having an inlet for introducing the treated reactant stream to the Sabatier reactor and an outlet for removing a product stream from the Sabatier reactor. Also disclosed is a method of preparing a reactant stream for a Sabatier reactor.

A method of and device for processing carbonacious material into gas and activated carbon together with blower.

A method of and device for processing carbonacious material into gas and activated carbon together with blower.

An apparatus for forming methane from carbon dioxide and hydrogen is described. The apparatus comprises: a dielectric barrier discharge, DBD, device arranged to generate a plasma; and a passageway having an inlet for the carbon dioxide and the hydrogen and an outlet for the methane and including therein a catalyst comprising nickel and alumina. The passageway extends, at least in part, through the DBD device wherein, in use, the carbon dioxide is exposed to the catalyst in the presence of the hydrogen in the generated plasma, thereby forming the methane from at least some of the carbon dioxide and the hydrogen. A method, a use and a catalyst are also described.

A CO.sub.2 separation/recover method in cement production exhaust gas has a step of harmful component removal that removes an acidic component and a harmful component from exhaust gas discharged from a cement production facility; and a step of CO.sub.2 separation and recover that separates and recovers CO.sub.2 by bringing the exhaust gas from which the acidic component and the harmful component are removed into contact with a CO.sub.2 absorption material, so that the acidic component and the harmful component are removed before separating and recovering CO.sub.2, resulting in deterioration of the absorbing ability of the CO.sub.2 absorption material being suppressed; and the cement production exhaust gas can be appropriately disposed.

Generating methane by adding hydrogen to CO.sub.2 in exhaust gas discharged a from cement production facility or CO.sub.2 that is separated and recovered from the exhaust gas, and using the methane as an alternative fuel to fossil fuel such as coal, petroleum, natural gas and the like, by methanation of CO.sub.2 in the exhaust gas from the cement production facility that includes exhaust gas originated from lime stone not from the fossil oil and effectively utilizing it, it is possible to reduce usage of the fossil fuel, suppress CO.sub.2 originated from energy, and improve an effect of reducing greenhouse gas.

A method of processing exhaust gas containing CO.sub.2, such as exhaust gas from a cement production plant, includes burning fuel in the combustion reactor with the O.sub.2 content of the exhaust gas being used as an oxidizing agent, controlling the combustion in the combustion reactor so that the exhaust gas from the combustion reactor contains less than 10 vol.-% of oxygen and at least 80 vol.-% of a mixture of CO and CO.sub.2, and feeding the exhaust gas from the combustion reactor into a conversion reactor, in which the CO.sub.2 and optionally the CO contained in the exhaust gas is converted into a hydrocarbon fuel.

A method of processing exhaust gas containing CO.sub.2, such as exhaust gas from a cement production plant, includes burning fuel in the combustion reactor with the O.sub.2 content of the exhaust gas being used as an oxidizing agent, controlling the combustion in the combustion reactor so that the exhaust gas from the combustion reactor contains less than 10 vol.-% of oxygen and at least 80 vol.-% of a mixture of CO and CO.sub.2, and feeding the exhaust gas from the combustion reactor into a conversion reactor, in which the CO.sub.2 and optionally the CO contained in the exhaust gas is converted into a hydrocarbon fuel.

The methane production plant (10) comprises: an electric energy source (11) suitable for supplying electrical energy, an electrolyser (14) fed with the electrical energy supplied by the electric energy source, suitable for supplying hydrogen in gas form, an atmospheric carbon dioxide capture device (16) suitable for supplying carbon dioxide and water, a methanation reactor (15) suitable for receiving the hydrogen supplied by the electrolyser, water and the carbon dioxide that are supplied by the atmospheric carbon dioxide capture device, and suitable for producing methane, and solar collectors (19) and a means for heat transfer from the solar collectors to the carbon dioxide capture device (16).

The methane production plant (10) comprises: an electric energy source (11) suitable for supplying electrical energy, an electrolyser (14) fed with the electrical energy supplied by the electric energy source, suitable for supplying hydrogen in gas form, an atmospheric carbon dioxide capture device (16) suitable for supplying carbon dioxide and water, a methanation reactor (15) suitable for receiving the hydrogen supplied by the electrolyser, water and the carbon dioxide that are supplied by the atmospheric carbon dioxide capture device, and suitable for producing methane, and solar collectors (19) and a means for heat transfer from the solar collectors to the carbon dioxide capture device (16).