Abstract: Various embodiments include a method for producing hydrocarbons, the method comprising: producing carbon monoxide and carbon dioxide with addition of oxygen in a first reaction unit; fermenting the carbon monoxide, the carbon dioxide, and hydrogen in a second reaction unit; adding biogas provided from a biogas system and oxygen from an electrolyzer as reactants to the first reaction unit; and adding hydrogen from the electrolyzer as a reactant to the second reaction unit.

Abstract: A method for cooling a fluid from an electrolysis unit and extracting water from ambient air comprising: conducting moist air having a first molar amount of water and raw water into an evaporator unit in a counterflow at a temperature at or below the boiling temperature of the water; evaporating pure water from the raw water into the moist air and cooling the raw water; conducting the cooled raw water into a heat exchanger thereby cooling the fluid stream of the electrolysis unit; conducting the moist air and the pure water into a water extraction unit; separating a second molar amount of the pure water off from the moist air in the water extraction unit, wherein a third molar amount of water remaining in the air is less than the first; conducting the preheated raw water back to the evaporator; and conducting the cooled fluid back into the electrolysis unit.

Abstract: Various embodiments may include a method of electrochemical production of synthesis gas comprising: reducing carbon dioxide to a first product gas including carbon monoxide in a carbon dioxide electrolysis cell; splitting water to generate a second product gas including hydrogen in a water electrolysis cell; delivering at least one catholyte from the group consisting of: a first catholyte from the carbon dioxide electrolysis cell and a second catholyte from the water electrolysis cell, into a gas scrubbing apparatus; and removing non-reduced carbon dioxide from the first product gas in the gas scrubbing apparatus using the at least one catholyte as an absorbent.

Abstract: Some embodiments include a method of electrochemical utilization of carbon dioxide including: delivering an electrolyte into a first cathode subspace of a carbon dioxide electrolysis cell including a first cathode arranged therein such that it defines a first cathode subspace and a second cathode subspace; delivering carbon dioxide into the second cathode subspace; reducing the carbon dioxide to a product gas; removing the catholyte from the first cathode subspace and the product gas out of the second cathode subspace separately from one another; combining the product gas and the catholyte downstream of the carbon dioxide electrolysis; and separating non-reduced carbon dioxide from the product gas with the catholyte acting as an absorbent. The electrolyte comprises a catholyte.

Abstract: Various embodiments may include a method comprising: reducing carbon dioxide to a product gas comprising carbon monoxide in a electrolysis cell; separating the product gas from the catholyte in a first separation apparatus; separating off excess water in the catholyte enriched with water from the anolyte during the reduction of carbon dioxide with a stripping gas in a second separation apparatus; separating the water from the stripping gas in a third separation apparatus; and recycling the water from the third separation apparatus into the anode space.

Abstract: A power plant system is provided having a high temperature battery, supplied with fluid via at least one supply line, for storing and releasing electrical energy, a gas turbine for generating electrical energy, and a heat exchanger which is designed to extract thermal energy from the exhaust stream of the gas turbine and transfer said thermal energy to the fluid, which fluid can be supplied after heat transfer to the high temperature battery via the at least one supply line.

Abstract: The present disclosure relates to membranes for use in electrolysis systems. The teachings thereof may be embodied in a method for checking a membrane of an electrolyzer comprises two volumes separated by the membrane and produces two product gases from a starting liquid. The method may include: detecting an electrolysis current strength during electrolysis, measuring a liquid flow rate of the starting liquid between the two electrolyzer volumes, calculating a ratio of the measured liquid flow rate and the detected electrolysis current strength, and using the calculated ratio as an indication of membrane leaktightness.

Abstract: Gaseous perfluorocarbons in a waste gas are adsorbed by an adsorption device. Subsequently a decomposition of the perfluorocarbons takes place with formation of hydrogen fluoride. The hydrogen fluoride is converted with an oxide of a metal to be reduced, to the metal fluoride thereof. The metal fluoride formed is then fed again to the reduction process.

Abstract: A sensor is provided for measuring the concentration of a fluorocarbon in the offgas during molten salt electrolysis of metal compounds. The measurement takes place at time intervals of less than 10 seconds and a controller initiates reduction in an electrolysis voltage if a fluorocarbon limit value of 25 ppm is exceeded.

Abstract: An energy store is provided having a first electrode, a second electrode, an electrolyte in between, a first redox pair having a first oxidation reactant and a first oxidation product, and a housing, wherein a fluidic redox pair is present in the housing and comprises a fluidic oxidation reactant and a fluidic oxidation product, wherein during the discharge of the energy store, the fluidic oxidation product is reduced, and wherein during the charging of the energy store, the fluidic oxidation reactant is oxidized, wherein the fluidic redox pair in the housing is gaseous, and a pump or a compressor is adapted such that the fluidic redox pair within the housing is held at a pressure which is above the ambient pressure outside the housing. A method for charging or discharging an energy store is also provided.

Abstract: At least one heat pipe for removing heat is led into a reactor housing of a fluidized bed reactor, so that the temperature in the reactor housing can be controlled.

Abstract: An apparatus for carrying out a carbon monoxide shift reaction, which includes converting carbon monoxide and water into carbon dioxide and hydrogen, the converting proceeding in a liquid phase with removal of a product gas including carbon dioxide and hydrogen, is provided. The apparatus includes dry methanol, as a first solvent in a first region for an absorption of carbon monoxide with simultaneous formation of methyl formate, and water, as a second solvent in a second region for a liberation of the product gas in order to avoid losses of hydrogen in a carbon dioxide region.

Abstract: An electric energy store having a thermally insulated chamber that has a process gas inlet and a process gas outlet is provided. The thermally insulated chamber is equipped with at least two stacks, each of which has at least one electrochemical storing cell, and each stack has a process gas inlet and a process gas outlet. The at least two stacks are serially connected with respect to the process gas flow.

Abstract: A method for synthesising a rare earth element by a redox reaction. The starting material side of the reaction for synthesising the rare earth element includes a rare earth compound, in which the rare earth element is present in a positive oxidation state, and hydrogen. The redox reaction takes place in two stages. First, a hydration reaction takes place between an elementary rare earth element and hydrogen to form a rare earth hydride. Then, a reaction takes place between the rare earth compound and the rare earth hydride. An elementary rare earth element and a hydrogen-containing compound are produced at the same time as the product of the reaction.

Abstract: Between an anode and a cathode, a salt melt containing a metal ion is separated from the anode by a gap across which an electric arc can be formed. The metal ion is deposited on the anode and subsequently removed.

Abstract: A power station-based methanation system which has a fossil fuel-fired power station together with an electrolysis unit and a methanation reactor is provided. The power station and the electrolysis unit are configured for supplying the methanation reactor with starting materials for a methanation reaction and the electrolysis unit can be operated both in a charging state and in a discharging state, in which charging state the electrolysis unit supplies electric power and a chemical energy store is at the same time charged and in which discharging state the chemical energy store is discharged.

Abstract: At least one heat pipe for removing heat is led into a reactor housing of a fluidized bed reactor, so that the temperature in the reactor housing can be controlled.

Abstract: A power plant system is provided having a high temperature battery, supplied with fluid via at least one supply line, for storing and releasing electrical energy, a gas turbine for generating electrical energy, and a heat exchanger which is designed to extract thermal energy from the exhaust stream of the gas turbine and transfer said thermal energy to the fluid, which fluid can be supplied after heat transfer to the high temperature battery via the at least one supply line.

Abstract: An electric energy store having a thermally insulated chamber that has a process gas inlet and a process gas outlet is provided. The thermally insulated chamber is equipped with at least two stacks, each of which has at least one electrochemical storing cell, and each stack has a process gas inlet and a process gas outlet. The at least two stacks are serially connected with respect to the process gas flow.

Abstract: An energy store is provided having a first electrode, a second electrode, an electrolyte in between, a first redox pair having a first oxidation reactant and a first oxidation product, and a housing, wherein a fluidic redox pair is present in the housing and comprises a fluidic oxidation reactant and a fluidic oxidation product, wherein during the discharge of the energy store, the fluidic oxidation product is reduced, and wherein during the charging of the energy store, the fluidic oxidation reactant is oxidized, wherein the fluidic redox pair in the housing is gaseous, and a pump or a compressor is adapted such that the fluidic redox pair within the housing is held at a pressure which is above the ambient pressure outside the housing. A method for charging or discharging an energy store is also provided.