Abstract: The invention relates to an electrode unit for an electrochemical device, comprising a solid electrolyte (3) and a porous electrode (7), the solid electrolyte (3) dividing a compartment for cathode material and a compartment for anode material and the porous electrode (7) being extensively connected to the solid electrolyte (3), with a displacer (23) being accommodated in the anode material compartment, where the displacer (23) is manufactured from a stainless steel or from graphite foil and bears resiliently against the internal geometry of the solid electrolyte (3) in such a way that the displacer (23) does not contact the solid electrolyte over its full area, or with the displacer comprising an outer shell (62) of stainless steel or graphite, and a core (64) of a nonferrous metal, the nonferrous metal being thermoplastically deformable at a temperature which is lower than the temperature at which the stainless steel is thermoplastically deformable, and where for production the shell (62) of stainless steel

Abstract: Nitrate salt composition comprising as significant constituents A) an alkali metal nitrate and optionally an alkali metal nitrite in a total amount in the range from 90 to 99.84% by weight and B) an alkali metal compound selected from the group B1) alkali metal oxide, B2) alkali metal carbonate, B3) alkali metal compound which decomposes into alkali metal oxide or alkali metal carbonate in the temperature range from 250° C. to 600° C., B4) alkali metal hydroxide MetOH, in which Met is lithium, sodium, potassium, rubidium, cesium, B5) alkali metal peroxide Met2O2, in which Met is lithium, sodium, potassium, rubidium, cesium, and B6) alkali metal superoxide MetO2, in which Met is sodium, potassium, rubidium, cesium, in a total amount in the range from 0.16 to 10% by weight, in each case based on the nitrate salt composition.

Abstract: The invention relates to a process for removing small amounts of water and possible further constituents from alkali metal amalgam, wherein the alkali metal amalgam is brought into contact with an element which is insoluble in mercury and catalyzes the reaction of water with the alkali metal amalgam and the possible further constituents to form hydroxides and hydrogen.

Abstract: The invention relates to a pipeline system for conveying a salt melt, comprising at least one pipeline (5) through which the salt melt flows, at least one inlet and at least one outlet, wherein the pipeline (5) through which the salt melt flows has at least one gradient inclined with respect to the horizontal and is respectively connected at the lowest positions via a drainage valve (25) to a drainage line (27) and at the highest positions to a venting valve (23). The invention furthermore relates to a method for draining the pipeline system.

Abstract: A flange cleat comprising a body having a first flange receiving portion and an immediately adjacent second flange receiving portion, a third flange receiving portion cooperatively disposed on the body opposite from the first flange receiving portion and the second flange receiving portion, the body having an elongate portion that extends from the third flange receiving portion, a flexible tab projecting from the elongate portion whereby the flexible tab can be depressed during installation, and the body being resiliently expandable during installation.

Abstract: The invention relates to a pipeline for carrying a molten salt, with a pipe wall that is stable with respect to the temperatures occurring. A heating conductor (21) is provided inside the pipeline (5) for heating, the heating conductor (21) preferably not lying against the inner wall of the pipeline (5).

Abstract: A flange cleat comprising a body having a first flange receiving portion and an immediately adjacent second flange receiving portion, a third flange receiving portion cooperatively disposed on the body opposite from the first flange receiving portion and the second flange receiving portion, the body having an elongate portion that extends from the third flange receiving portion, a flexible tab projecting from the elongate portion whereby the flexible tab can be depressed during installation, and the body being resiliently expandable during installation.

Abstract: A solution system for biopolymers in the form of carbohydrates based on a molten ionic liquid, additives optionally being contained in the solution system, is described. This solution system contains a protic solvent or a mixture of several protic solvents, and in the case where the protic solvent is solely water, this is present in the solution system in an amount of more than about 5 wt. %. Carbohydrates can be incorporated into the solution system, in particular in the form of starch, cellulose and derivatives thereof, and it can then be used for regeneration of the carbohydrates contained therein. A particularly advantageous process for the preparation of the solution system containing the carbohydrates and for the preparation of regenerated carbohydrates, in particular in the form of regenerated cellulose fibers, is moreover described. The invention accordingly also provides such spun fibers as are distinguished in that they are non-fibrillating.

Abstract: The invention relates to a device for receiving hot, corrosively acting liquids (7), comprising a space enclosed by a wall (21) for receiving the liquid (7), the space having an inner insulation (19). The invention also relates to the use of the device for storing corrosively acting liquids for storing a heat storage medium comprising sulfur.

Abstract: An electrolysis device producing alkali metals from a liquid alkali metal heavy metal alloy, including at least two connected tubes forming an electrolysis unit. Two solid electrolyte tubes are arranged concentrically in each tube and oriented with openings towards one end of each tube such that a first annular gap for guiding a liquid alkali metal forming an anode is located between the inside of the tube and the outside of the solid electrolyte tubes. An alloy inlet and outlet for the liquid alkali metal in each of the tubes leads into the first annular gap of a tube. An inner chamber sealed off from the alloy inlet, first annular gap, and alloy outlet in each solid electrolyte tube receives liquid alkali metal that can be used as a cathode connected to the alkali metal outlet. Two respective closure devices are arranged at the two ends of each tube.

Abstract: The invention relates to a device for storing heat, comprising a heat storage medium which absorbs heat in order to store heat and releases heat in order to use the stored heat, and a container for holding the heat storage medium, the container being closed by a gastight cover, and the device comprising volume compensation means in order to compensate for a volume increase of the heat storage medium (3) due to a temperature rise and a volume decrease due to a temperature reduction.

Abstract: Mixture comprising elemental sulfur and an additive comprising anions.

Abstract: The present invention relates to mixtures of alkali metal polysulfides and to mixtures of alkali metal polysulfides and alkali metal thiocyanates, to processes for preparation thereof, to the use thereof as heat transfer or heat storage fluids, and to heat transfer or heat storage fluids which comprise the mixtures of alkali metal polysulfides or the mixtures of alkali metal polysulfides and alkali metal thiocyanates.

Abstract: Process for producing cellulose beads or lignocellulose beads, wherein cellulose or lignocellulose is dissolved in a solvent which comprises more than 50% by weight of the symmetrical imidazolium compound of the formula I below where R1 and R3 are each an identical organic radical having from 2 to 20 carbon atoms, R2, R4 and R5 are each an H atom, X is an anion and n is 1, 2 or 3, and cellulose beads or lignocellulose beads are produced from the solution obtained, and also the use of the beads obtained for petroleum or natural gas recovery.

Abstract: The present invention relates to a process for producing spherical particles of at least one material, which comprises the steps: (A) preparation of a solution or dispersion of the at least one material in at least one water-miscible solvent or dispersion medium, (B) conversion of the solution or dispersion obtained in step (A) into individual portions comprising an amount of the at least one material corresponding to the amount present in the spherical particles by underwater pelletization and (C) introduction of the portions obtained in step (B) into a medium which is miscible with the solvent or dispersion medium from step (A) and in which the material used in step (A) is insoluble so that the solvent or dispersion medium used in step (A) is replaced by the medium which is miscible with the solvent or dispersion medium from step (A) and the material solidifies to form the spherical particle.

Abstract: The invention relates to a method for producing regenerated biopolymers in the form of carbohydrates, using a solvent system that contains the biopolymers dissolved therein. The solvent system is based on a melted ionic liquid and optionally a protic solvent or a mixture thereof. The biopolymers dissolved in the solvent system are precipitated in a coagulation medium, said medium comprising a protic coagulant or a mixture of protic coagulants. The method according to the invention is characterized in that the surface tension a of the coagulant or the mixture of coagulants is 99% to 30% of the surface tension a of water, the surface tension being measured according to ASTM D 1590-60 at a temperature of 50° C. The method according to the invention is economical and flexible and leads to advantageous products, especially in the form of staple fibers which are especially not fibrillated and have an advantageous wet to dry strength ratio.

Abstract: A duct connection comprising a collar having a first tab extending radially for lockable engagement with a first duct, a flexible body having an inner surface, the flexible body extendably disposed on the outside of the collar whereby the flexible body is axially coextensive with the collar when the collar is engaged with the duct, and whereby the duct is disposed between the collar and the flexible body when the flexible body is in the axially extended position, and the flexible body sealingly engageable with the duct.

Abstract: A device for energy recovery for a large diesel engine includes a current generator for converting mechanical rotational energy into electric energy. The current generator includes input shaft for applying rotational energy; a steam turbine a first shaft for transmitting the rotational energy of the steam turbine to the input shaft of the current generator a power turbine and a second shaft for transmitting the rotational energy of the power turbine to the input shaft of the current generator, wherein the first shaft and the second shaft are coupled with the input shaft of the current generator. A first coupling device between the current generator and the steam turbine couples the input shaft of the current generator and the first shaft and/or a second coupling device between the current generator and the power turbine couples the input shaft of the current generator and the second shaft are provided.

Abstract: The invention relates to a process for removing small amounts of water and possible further constituents from alkali metal amalgam, wherein the alkali metal amalgam is brought into contact with an element which is insoluble in mercury and catalyzes the reaction of water with the alkali metal amalgam and the possible further constituents to form hydroxides and hydrogen.

Abstract: A solution system for biopolymers in the form of carbohydrates based on a molten ionic liquid, additives optionally being contained in the solution system, is described. This solution system contains a protic solvent or a mixture of several protic solvents, and in the case where the protic solvent is solely water, this is present in the solution system in an amount of more than about 5 wt. %. Carbohydrates can be incorporated into the solution system, in particular in the form of starch, cellulose and derivatives thereof, and it can then be used for regeneration of the carbohydrates contained therein. A particularly advantageous process for the preparation of the solution system containing the carbohydrates and for the preparation of regenerated carbohydrates, in particular in the form of regenerated cellulose fibers, is moreover described. The invention accordingly also provides such spun fibers as are distinguished in that they are non-fibrillating.