Abstract: A method for modification of a methane-containing gas stream, comprising the steps of: i) withdrawal of at least one substream from a methane-containing gas stream; ii) treatment of the substream with an electrically generated plasma, generating a modified gas composition which comprises a lower fraction of methane than the methane-containing gas stream used and iii) return of modified gas composition into the methane-containing gas stream. This method makes possible the storage of excess power in a natural gas line grid.

Abstract: A method and device providing control power for an electrical grid. An energy generator feeds energy to the electrical grid as necessary, an energy consumer takes up energy from the electrical grid as necessary, and an energy store is connected to the electrical grid for providing the control power. The energy store starting from a first time point outputs to the electrical grid at least a difference between power provided by the energy generator and a nominal power or takes up from the electrical grid at least a difference between the power taken up by the energy consumer and the nominal power. The energy store provides at least this difference between the nominal power and the power provided by the energy generator or the power taken up by the energy consumer until power of the energy generator or of the energy consumer reaches the nominal power at a second time point.

Abstract: A method for producing control power for stabilizing an AC electrical grid, wherein the AC electrical grid operates at a variable desired frequency and the AC electrical grid comprises at least one control power supplier which is controlled in a decentralized manner and which controls the grid frequency to a predefined frequency, wherein the predefined frequency is adapted to the desired frequency.

Abstract: A method providing control power for an electrical grid; an energy generator feeds energy to the electrical grid or an energy consumer takes energy from the electrical grid. The energy generator and/or energy consumer are/is operated together with an energy store connected to the electrical grid to provide the control power. The energy store at least partly takes up and/or outputs an overshoot energy generated in event of power of the energy generator overshooting beyond nominal power and/or consumed in event of the power of the energy consumer overshooting beyond the nominal power. A device for carrying out the method includes a controller, an energy store, and an energy generator and/or an energy consumer. The device is connected to an electrical grid, the controller is connected to the energy store, and the energy consumer and/or the energy generator and controls the control energy generated and/or taken up.

Abstract: A method for providing control power for an electricity network in which at least one energy store connected to the electricity network supplies energy to the electricity network as required and/or takes up energy from the electricity network as required, the control power being delivered in dependence on a frequency deviation from a setpoint value of a network frequency, a tolerance with respect to the frequency deviation being used to set a charging state of the energy store at a same time as providing the control power by the energy store. A device for carrying out such a method includes a control system and an energy store, the device being connected or connectable to an electricity network, the control system being connected to the energy store and controlling the control power that is given off and/or taken up by the energy store.

Abstract: The present invention relates to a method for delivering control power to stabilize an AC electricity network, the AC electricity network operating at a set frequency, comprising an energy store that can take up and deliver electrical energy, the energy store being connected to at least one unit for charging and/or discharging the energy store, the unit for charging and/or discharging the energy store drawing energy from the energy store or supplying energy to the energy store with a power of at most less than or equal to 20% of the contracted maximum power of the energy store.

Abstract: A method for providing control power for an electricity network in which at least one energy store connected to the electricity network supplies energy to the electricity network as required and/or takes up energy from the electricity network as required, the control power being delivered in dependence on a frequency deviation from a setpoint value of a network frequency, tolerance with respect to the amount of the control power to be provided being used to set a charging state of the energy store at a same time as providing control power by the energy store. A device for carrying out such a method includes a control system and an energy store, the device being connected or connectable to an electricity network, the control system being connected to the energy store and controlling control power given off and/or taken up by the energy store.

Abstract: A method for providing control power for an electricity network in which at least one energy store connected to the electricity network supplies energy to the electricity network as required and/or takes up energy from the electricity network as required, such that, when there is a change of required control power, a time after a change from which a changed control power is provided by the energy store is chosen in dependence on a charging state at a given time of the energy store. A device for carrying out such a method includes at least one energy store and a control system for controlling power of the energy store in an open-loop and/or closed-loop manner, the energy store being connected to an electricity network such that energy can be fed into the electricity network and can be removed from the electricity network by the device.

Abstract: A method and device for a provision of control power for a power supply network in which control power is provided, wherein an energy producer and an energy consumer are jointly operated, wherein the power which the energy consumer removes from the power supply network is restricted to provide a positive control power, and the power which the energy producer feeds into the power supply network is restricted to provide a negative control power.

Abstract: Method for the provision of control power for a power supply network, wherein the level of the control power provided is determined depending on a deviation of the actual alternating current frequency from a nominal alternating current frequency of the power supply network, wherein the control power is provided in a pulsed manner in order to increase the efficiency, wherein the control energy provided in a specific time period from the pulsed operation corresponds to the control energy to be provided in the same time period in the case of a continuous operation of a control power source.

Abstract: A method providing control power for an electricity network in which at least one energy store supplies energy to the electricity network and/or takes up energy from the electricity network dependent on a frequency deviation from a desired frequency of the electricity network, a deadband being prescribed around the desired frequency. The frequency deviation from the network frequency is measured with greater accuracy than a width of the deadband and a bandwidth within the deadband is chosen dependent on a charging state of the energy store, with control power being provided outside the bandwidth. A device carrying out the method includes at least one energy store and a control system controlling control power of the energy store in an open-loop or closed-loop manner, the energy store being connected to an electricity network such that energy can be fed into the electricity network and can be removed from the electricity network.

Abstract: The present invention relates to a process for preparing aqueous colloidal silica sols of high purity from silicate solutions, to aqueous colloidal silica sols with a specific profile of impurities, and to the use thereof. The invention further encompasses high-purity aqueous silica obtained as an intermediate in the course of the purification process, high-purity silicon dioxide obtainable by dewatering, and the use thereof.

Abstract: The present invention relates to a process for producing SiO2 mouldings, comprising the preparation of a free-flowing aqueous SiO2 composition, solidification of the aqueous SiO2 composition and drying of the solidified SiO2 composition, wherein the aqueous SiO2 composition is a self-assembly composition. The present invention further relates to a moulding obtainable by the process according to the invention.

Abstract: The present invention relates to a component for producing vacuum insulation systems, comprising at least one insulation layer which is surrounded by a casing, wherein the gas pressure in the insulation layer can be reduced by means provided in the component, wherein the means for reducing the gas pressure is embodified as activatable. The present invention further describes a vacuum insulation system comprising a component according to the invention.

Abstract: There are described thermoelectric elements that are manufactured by using a porous matrix or a porous substrate. The matrix consists of an electrically insulating material having sufficient thermal and chemical resistance as well as the lowest possible thermal conductivity, and is provided in predetermined regions with different thermoelectric materials, so that continuous conductors are formed in the matrix. These are electrically connected to one another to form thermocouples, which in turn are electrically interconnected with one another to form the thermoelectric element.

Abstract: A method for modification of a methane-containing gas stream, comprising the steps of: i) withdrawal of at least one substream from a methane-containing gas stream; ii) treatment of the substream with an electrically generated plasma, generating a modified gas composition which comprises a lower fraction of methane than the methane-containing gas stream used and iii) return of modified gas composition into the methane-containing gas stream. This method makes possible the storage of excess power in a natural gas line grid.

Abstract: Catalyst-coated support, method for producing the same, reactor comprising the same and use thereof. Supports having a catalytic coating comprising at least one porous and cavity-containing catalyst layer are described, cavities being irregular spaces having dimensions greater than 5 ?m in at least two dimensions or having cross-sectional areas of at least 10 ?m2. The catalytic coatings are distinguished by a high adhesive strength and can preferably be used in microreactors.

Abstract: Supports having a catalytic coating comprising at least one porous and cavity-containing catalyst layer are described, cavities being irregular spaces having dimensions greater than 5 ?m in at least two dimensions or having cross-sectional areas of at least 10 ?m2. The catalytic coatings are distinguished by a high adhesive strength and can preferably be used in microreactors.

Abstract: The object of the invention is a more energy-efficient system for utilizing waste heat and residual gases from the engineered generation of carbon compounds, such as carbon black, graphite or from sugar pyrolysis, using a coupling of energy-heat or a thermal heat-generating plant for generating electrical energy, in particular for operating melt furnaces, and/or for utilizing the waste heat in endothermal processes. The invention also relates to the use of waste heat.

Abstract: Supports having a catalytic coating comprising at least one porous and cavity-containing catalyst layer are described, cavities being irregular spaces having dimensions greater than 5 ?m in at least two dimensions or having cross-sectional areas of at least 10 ?m2. The catalytic coatings are distinguished by a high adhesive strength and can preferably be used in microreactors.