Abstract: A method and system for electrolytically producing at least one product stream containing hydrogen, wherein a feed stream containing at least water is subjected to electrolysis so as to obtain two extraction streams. Downstream of the electrolysis, the two extraction streams are subjected to separation so as to obtain the at least one product stream and two liquid fractions containing water. At least one of the two liquid fractions is fed back at least in part to the electrolysis. Upstream of the electrolysis, the feed stream is heated by exchanging heat with at least one of the two extraction streams. The at least one extraction stream from which heat is removed by means of the heat exchange is subjected to additional cooling, the additional cooling taking place by using an organic Rankine cycle or a Rankine cycle that uses an organic-chemical heat transport medium.

Abstract: The invention relates to a method for producing a gas product containing oxygen, wherein a feedstock containing water is subjected to electrolysis to obtain a raw anode gas, which is rich in oxygen and contains hydrogen, and a raw cathode gas, which is low in oxygen and rich in hydrogen. The raw anode gas is at least partially subjected to a catalytic conversion of hydrogen to water to obtain a first mixture with depleted hydrogen content. A first part of the first mixture is returned to the raw anode gas downstream of the electrolysis and upstream of the catalytic conversion, and the gas product containing oxygen is formed using at least a second part of the first mixture. The invention also relates to a plant for carrying out a method of this type.

Abstract: An electrolysis system and an electrolysis method wherein the electrolysis system includes a pressure-electrolytic cell and a throttle in the catholyte line, by which the catholyte flow can be divided into a gas and liquid phase. In this way, (by-)products of the electrolysis can be recycled, while the electrolytic cell can be operated effectively at a high pressure.

Abstract: The invention concerns a process for operating a fired furnace which is heated using a fuel gas stream and forming a combustion product stream, wherein heat of at least part of the combustion product stream is used in forming a steam stream. It is provided that at least a part of the steam stream is subjected to a high-temperature electrolysis to form a hydrogen-containing and an oxygen-containing material stream, and that at least a part of the hydrogen-containing material stream is used as the fuel gas stream. A corresponding arrangement is also the subject of the invention.

Abstract: A method for operating a system for electrolysis in order to obtain at least one gaseous electrolysis product, in which system at least one electrolysis device is electrically connected to a power converter by means of a direct-voltage circuit, the power converter being connected to an alternating-voltage circuit in order to supply the at least one electrolysis device with electrically energy for the operation of the at least one electrolysis device, the power converter being operated by means of zero crossing control. The invention further relates to a system of this type.

Abstract: The invention relates to a method (100) for the electrolytic production of a liquid hydrogen product (4), in which a water-containing feed is subjected to an electrolysis (E) while receiving an anode raw gas (3), rich in oxygen and containing hydrogen, and a cathode raw gas (2) which is depleted of oxygen and rich in hydrogen, wherein the cathode raw gas (2) downstream of the electrolysis (E) is subjected to a purification (R), a compression (K), and a liquefaction (L), characterized in that the cathode raw gas (2) at least partially undergoes intermediate storage (Z) downstream of the electrolysis (E) and upstream of the liquefaction (L). A corresponding installation is also proposed.

Abstract: A method for producing a carbon-monoxide-rich gas product, in which method at least carbon dioxide is subjected to electrolysis, so as to obtain an untreated gas comprising at least carbon monoxide and carbon dioxide, and in which method the untreated gas is subjected to a separation process, which comprises an adsorption and membrane separation, so as to obtain a recycling stream, which comprises the major part of the carbon dioxide contained in the untreated gas, a residual gas, and the carbon-monoxide-rich gas product. A plant for carrying out such a method is also proposed.

Abstract: A device comprising an electrolyser, a compressor, and a membrane separating device, and to a method for changing the operating mode between normal and standby operation of said device, in the normal operation of which an electrolysis raw product comprising carbon dioxide is converted in the electrolyser into an electrolysis product containing carbon dioxide and carbon monoxide, at least one portion of which is conducted via the compressor and is fed at an increased pressure to the membrane separating device in order to obtain a retentate which is enriched in carbon monoxide and depleted of carbon dioxide compared with the electrolysis product. According to the invention, in order to change from the normal operation into the standby operation, the electrolyser is completely isolated from the membrane separating device in terms of flow and then shut down, wherein the pressure ratios in the membrane separating device are largely maintained.

Abstract: An electrolysis system and an electrolysis method wherein the electrolysis system includes a pressure-electrolytic cell and a throttle in the catholyte line, by which the catholyte flow can be divided into a gas and liquid phase. In this way, (by-)products of the electrolysis can be recycled, while the electrolytic cell can be operated effectively at a high pressure.

Abstract: A method for the electrochemical production of a gas including CO, in particular CO or syngas, from CO2, wherein the electrochemical production of the gas including CO, in particular CO or syngas, from CO2 takes place in multiple electrolytic cells, which are arranged in series one behind the other in the direction of at least one electrolyte flow and each include a cathode and an anode, wherein the at least one electrolyte flow is conducted through the electrolytic cells which are arranged in series one behind the other and is intermediately cooled between at least two electrolytic cells which are arranged in series one behind the other. A device is adapted for carrying out the method.

Abstract: The invention relates to a method (100, 200) for producing a gas product (D) containing at least carbon monoxide, in which method at least carbon dioxide is subjected to an electrolysis process (10) in order to obtain a raw gas (A) containing at least carbon monoxide and carbon dioxide and the carbon dioxide contained in the raw gas (A) is partially or completely fed back to the electrolysis process (10), characterized in that the raw gas (A) is partially or completely subjected to an adsorption process (20) in order to obtain the gas product (D), which is enriched in carbon monoxide and depleted of carbon dioxide in comparison with the raw gas (A), and a residual mixture (E), which is depleted of carbon monoxide and enriched in carbon dioxide in comparison with the raw gas (A), and that the residual mixture (E) is at least partially subjected to a membrane separation process (30) in order to obtain a first gas mixture (B) as a retentate and a second gas mixture (H) as a permeate, the first gas mixture (B) at

Abstract: The invention relates to a method (100-500) for producing a gas product containing at least carbon monoxide, in which method at least carbon dioxide is subjected to an electrolysis process (10) in order to obtain a raw gas (A) containing at least carbon monoxide and carbon dioxide and the carbon dioxide contained in the raw gas (A) is partially or completely fed back to the electrolysis process (10).

Abstract: The present invention provides a method for profiling phytohormone levels in plant tissue or tissue of other plastid containing organisms, i.e. a method for the simultaneous determination of a multitude of phytohormone levels in plant tissue or tissue of other plastid containing organisms.

Abstract: The present invention provides a method for profiling phytohormone levels in plant tissue or tissue of other plastid containing organisms, i.e. a method for the simultaneous determination of a multitude of phytohormone levels in plant tissue or tissue of other plastid containing organisms, which method comprises the following steps: i. extraction of particulate tissue material of the plastid containing organism, in particulate tissue material of plants, with a liquid extractant, which is a mixture of at least one water miscible neutral organic solvent having from 1 to 3 carbon atoms and 1 heteroatom selected from O and N with water containing from 0.1 to 5% by weight, based on the extractant, of at least one acid, whereby a first liquid extract is obtained; ii. contacting the liquid extract obtained in step i. with a solid absorbent having a hydrophobically modified surface and removing the solid absorbent to obtain a second liquid extract; iii.