Abstract: The invention provides a novel semiconductive polymer composition with improved smoothness and dispersibility of carbon black when compounding the polymer composition and feasible balance with other properties such as volume resistivity. The semiconductive polymer composition comprises (a) from 30 to 90 wt % of a polymer component, (b) from 10 to 70 wt % of carbon black and the carbon black (b) has a mass pellet strength (MPS) according to ASTM D1937-13 of from 50 to 250 N. The invention further relates to a process for preparing the semiconductive polymer composition comprising the steps of: i) introducing 30-90 wt % of a polymer component as defined above and 0-8 wt % additives in a mixer device and mixing the polymer component and additives at elevated temperature such that a polymer melt is obtained; ii) adding 10-70 wt % of a carbon black as defined above to the polymer melt and further mixing of the polymer melt.

Abstract: The invention relates to a method for the cutting or shaping working of metallic or ceramic workpieces and the use of a preferably submerged tool, whereby during the machining process a cooling agent, comprised at least mostly of carbon dioxide (CO2), is supplied to the working position. The invention further relates to a tool for carrying out said method. According to the invention, the cooling in particular of submerges tools may be improved, whereby liquid CO2 under pressure is supplied internally through the tool and released from the tool in the direct vicinity of the actual machining position, expanding through a pressure drop to atmospheric pressure, to give a cooling flow, comprising cold gas and ice particles.

Abstract: The invention relates to stilbene derivatives of general formula (I), in which at least four of the substituents R1 to R6 do not represent hydrogen. The substituents are effective radical captors, anti-tumour active ingredients and selective cyclooxygenase-2 inhibitors.

Abstract: The invention relates to a method for the cutting or shaping working of metallic or ceramic workpieces and the use of a preferably submerged tool, whereby during the machining process a cooling agent, comprised at least mostly of carbon dioxide (CO2), is supplied to the working position. The invention further relates to a tool for carrying out said method. According to the invention, the cooling in particular of submerges tools may be improved, whereby liquid CO2 under pressure is supplied internally through the tool and released from the tool in the direct vicinity of the actual machining position, expanding through a pressure drop to atmospheric pressure, to give a cooling flow, comprising cold gas and ice particles.

Abstract: A method for generating a hydrogen-containing product gas from liquid or gaseous hydrocarbons includes providing a reformer installation having a combustion space, a mixing chamber and a reformer unit. Partial oxidation of a first hydrocarbon stream with a first oxygen-containing gas stream is performed and a first product-gas stream containing hydrogen is formed, in the combustion space. A second hydrocarbon stream is reformed with water and a second product gas stream containing hydrogen is formed, in the reformer unit. The first product-gas stream and the second product-gas stream are mixed in the mixing chamber to form a third product-gas stream. The reformer unit is heated with the third product-gas stream.

Abstract: A method for generating heat by flameless combustion of a fuel in a gas flow having an oxygen content, includes passing a gas flow through at least one heating device, along at least one delivery device for fuel, and along at least one catalytically active element. A predominant part of the gas flow is passed through a loop while passing through a feed apparatus and along the at least one catalytically active element. A gas having an oxygen content is fed into the loop, and some of the gas flow is discharged from the loop. Fuel is admixed with the gas flow only to such an extent that a resultant fuel-gas mixture is not itself ignitable. An apparatus for introducing heat into a component, includes a gas carrying system for conducting a gas flow carrying heat produced by flameless combustion of a fuel. The gas carrying system has at least one loop, a delivery device for delivering fuel, a gas inlet, and a gas outlet.

Abstract: The process is of special interest to refinieries in the neighborhood of existing oilfields. The crude oil additionally released in the known manner by the introduction of hot water or steam contains also a so-called petroleum gas consisting largely of methane as well as other combustible gases. According to the invention, this gas is converted in hydrogen using a cracking oven heated by a high-temperature reactor, with steam being produced by the heat released by the cracking oven.

Abstract: For separating waste from a fiber-and-waste mixture in a textile machine, the mixture is tangentially thrown from a rotating roll by centrifugal force. An air flow is directed onto the traveling particles of the mixture such that fibers are returned to the roll, while the waste particles are allowed to continue their travel. Subsequently, the waste particles are removed by suction.

Abstract: A fiber processing machine has rotary components, a shroud surrounding the components at least laterally and from above, a suction apparatus including at least one suction head situated in the space surrounded by the shroud for drawing away, by means of an air stream, fiber waste released during operation of the machine. There is provided at least one blower head which is located between the rotary components and the shroud for introducing pressurized air into the space surrounded by the shroud.

Abstract: Method for generating methane or synthesis gas from carbon-containing materials, e.g. coal, by reacting part of the carbon with hydrogen in a hydrogenating gasifier to produce a methane containing gas, and reacting the residual carbon with steam in a steam gasifier to produce a raw gas containing synthesis gas. Features are:(a) The steam gasifier is heated with the raw gas leaving the hydrogenating gasifier.(b) The hydrogen gas entering the hydrogenating gasifier is heated with the raw gas leaving the steam gasifier.(c) The output stage of the steam gasifier is heated electrically.(d) The entire nuclear heat is given off to a steam loop.In addition a methane cracking furnace may be provided with the following features:(a) The methane cracking furnace is heated electrically in the upper temperature range.(b) The raw gas leaving the methane cracking furnace serves for heating the entering methane.

Abstract: Generating methane or synthesis gas from carbon-containing materials, e.g. coal, by reacting part of the carbon with hydrogen in a hydrogenating gasifier to produce a methane containing gas, and reacting the residual carbon with steam in a steam gasifier to produce a raw gas containing synthesis gas, which latter may be converted to hydrogen and directed to the hydrogenation gasifier or may at least in part be used as a product. The steam gasifier is heated with raw gas leaving the hydrogenating gasifier. The hydrogen gas entering the hydrogenation gasifier is heated with the raw gas leaving the steam gasifier. At least part of the methane is reacted with steam to synthesis gas while heat is being supplied.

Abstract: Apparatus for high temperature catalytic conversion of gases is disclosed in which the first part of the heating is done with a heating gas and the final most difficult part is done with electric heaters. The heating gas is passed between spaced layers of catalyst, out of contact and crosswise and countercurrent to the flow of gases to be converted. The gases are first subjected to preheating with heating gas, then heating as the gases contact catalyst, and then superheating, i.e. heating to a final high temperature, with electric heaters in the absence of heating gas.

Abstract: A hydro gas plant with utilization of the residual coke, comprising a gasifier into which raw coal is introduced for hydro gasification that results in the production of methane; a furnace for cracking the methane into hydrogen and carbon monoxide; and means for utilizing the combustion heat of the residual coke obtained during the operation of the gasifier, or a low-BTU gas produced from the coke, in at least the cracking furnace but optionally also in a steam generator. The use of exhaust gases from the cracking furnace is also suggested, namely in a preheater through which hydrogen is fed to the gasifier.