Apparatus for the recovery and storage of carbon in the form of liquid carbon dioxide from substances of the group hydrocarbons/ethers/alcohols, comprising - at least one steam generator for the evaporation of water and of a substance of the group hydrocarbons/ethers/alcohols, - at least one membrane reactor for catalytic steam reforming of a substance of the group hydrocarbons/ethers/alcohols and for separating hydrogen gas from the product gas generated by the steam reforming, - at least one device for condensing out carbon dioxide from a gas mixture containing carbon dioxide, - at least one storage tank for carbon dioxide, - at least one device for the oxidation of hydrogen gas, selected from the group of internal combustion engines or from the group of fuel cell systems, characterised in that - the steam generator is designed to generate steam of more than 5.18 bar, and the membrane reactor, the device for condensing out carbon dioxide and the storage tank for carbon dioxide can be operated with gas pressures of more than 5.18 bar, - the steam generator for vaporizing water and a substance of the group hydrocarbons/ethers/alcohols has an inlet device for supplying heat and contains at least one recuperator, - the device for oxidation of hydrogen gas can be operated at a temperature which is above the operating temperature of the steam generator, - the device for condensing out carbon dioxide has a recuperator, and that there are the following lines between the said devices: - at least one line for transporting gas at a pressure above 5.18 bar, connecting the steam generator, the membrane reactor with the device for condensing out carbon dioxide, - at least one line for transporting a liquid medium with a pressure of more than 5.18 bar, connecting the device for condensing out carbon dioxide with the storage tank for carbon dioxide, - at least one line which connects the membrane reactor with the device for the oxidation of hydrogen gas and which can be used for feeding a hydrogen-containing gas into the device for the oxidation of hydrogen gas. - at least one steam generator for the evaporation of water and of a substance of the group hydrocarbons/ethers/alcohols, - at least one membrane reactor for catalytic steam reforming of a substance of the group hydrocarbons/ethers/alcohols and for separating hydrogen gas from the product gas generated by the steam reforming, - at least one device for condensing out carbon dioxide from a gas mixture containing carbon dioxide, - at least one storage tank for carbon dioxide, - at least one device for the oxidation of hydrogen gas, selected from the group of internal combustion engines or from the group of fuel cell systems, - the steam generator is designed to generate steam of more than 5.18 bar, and the membrane reactor, the device for condensing out carbon dioxide and the storage tank for carbon dioxide can be operated with gas pressures of more than 5.18 bar, - the steam generator for vaporizing water and a substance of the group hydrocarbons/ethers/alcohols has an inlet device for supplying heat and contains at least one recuperator, - the device for oxidation of hydrogen gas can be operated at a temperature which is above the operating temperature of the steam generator, - the device for condensing out carbon dioxide has a recuperator, - at least one line for transporting gas at a pressure above 5.18 bar, connecting the steam generator, the membrane reactor with the device for condensing out carbon dioxide, - at least one line for transporting a liquid medium with a pressure of more than 5.18 bar, connecting the device for condensing out carbon dioxide with the storage tank for carbon dioxide, - at least one line which connects the membrane reactor with the device for the oxidation of hydrogen gas and which can be used for feeding a hydrogen-containing gas into the device for the oxidation of hydrogen gas.