Abstract: A method for removing acid gases from a fluid stream comprises a) treating the fluid stream in an absorption zone with an absorption medium which comprises an aqueous solution of at least one amine, conducting the treated fluid stream through at least two scrubbing zones and treating it with a non-acidic aqueous phase in order to transfer entrained amine and/or entrained amine decomposition products at least in part to the aqueous phase, wherein aqueous phase is recycled via at least one scrubbing zone and aqueous phase is conducted through at least one scrubbing zone without recycling. The method permits efficient retention of amines from the treated fluid streams.

Abstract: The present invention relates to a contact bar assembly for use in a multi-cell electrolytic system for recovery of metal, to a system including the contact bar assembly, and to a method of using the assembly and system. The contact bar assembly includes a base cap board, a primary bar having a plurality of primary bar structures formed thereon, an auxiliary bar having a plurality of auxiliary bar structures formed thereon, and a top cap board, wherein the base cap board includes slots to receive the primary bar and the auxiliary bar, and wherein the top cap board includes a plurality of openings to receive the plurality of primary bar structures and the plurality of auxiliary bar structures. A system includes the contact bar assembly, an anode assembly, a cathode assembly, and a tank.

Abstract: The present invention relates to an anode assembly for use in an electrolytic cell for recovery of metal. The assembly includes a hanger bar, a first perimeter bar, a second perimeter bar, optionally one or more center conductor bars, a base bar, a first tab coupled to the first perimeter bar and/or the base bar, and a second tab coupled to the second perimeter bar and/or the base bar. The assembly may also include insulating separators coupled to the tabs and/or insulators coupled to an active area of the anode assembly. A system includes the anode assembly, a cathode assembly, and a tank.

Abstract: The present invention relates to a composition suitable for use in electrical equipment containing a dielectric fluid including an oil component, the oil component including one or both of crambe oil and high erucic acid rapeseed oil and one or both of esterified crambe oil and esterified high erucic acid rapeseed oil.

Abstract: Flame retardant adhesives and tape articles include a nonhalogenated flame retardant composition comprising a combination of melamine phosphate and melamine cyanurate.

Abstract: Apparatus for heat treatment of a long material of metal includes an induction unit having an inductor for heating a long material and a quenching spray associated to the inductor. The induction unit and the long material are moveable in relation to one another during a heat treatment. A holding device secures the long material and includes at least two clamping units which are spaced from one another at a distance in a longitudinal direction of the long material. The clamping units can be opened to allow passage of the induction unit during the heat treatment and closed again after passage of the induction unit.

Abstract: A method is disclosed for producing a catalytic converter, which includes a monolith wrapped in a mat and is disposed in a housing, wherein an average diameter of the monolith and a thickness of the mat are determined and the monolith is wrapped in the mat. A housing blank is formed into a housing and the wrapped monolith is enclosed in the housing. The average diameter of the monolith is determined by introducing the monolith in a measurement space having an interior volume, filling a gap between the measurement space and the monolith with a fluid, measuring a quantity of fluid which corresponds to a volume difference between the monolith and the interior volume of the measurement space, and calculating the average diameter of the monolith from the volume difference.

Abstract: Absorption medium for acid gases comprising an oligoamine (A) of the general formula (I) and a primary or secondary alkanolamine (B) of the general formula (II) in which the weight ratio of oligoamine (A) to the primary or secondary alkanolamine (B) is 0.2 to 4, and also the process for removing acid gases from a gas stream by contacting the gas stream at a pressure of 0.05 to 10 MPa abs with an aqueous solution brought to and maintained at a temperature of 20 to 80° C. of said absorption medium.

Abstract: Absorption medium for acid gases comprising an oligoamine (A) of the general formula (I) and a piperazine derivative (B) of the general formula (II) in which the weight ratio of oligoamine (A) to the piperazine derivative (B) is 0.2 to 25, and also process for removing acid gases from a gas stream by contacting the gas stream at a pressure of 0.05 to 10 MPa abs with an aqueous solution of said absorption medium which is brought to and maintained at a temperature of 20 to 80° C.

Abstract: Methods for aggregating suspended solid particles in an aqueous medium involving mixing the aqueous medium with an effective amount of a flocculant to aggregate the solid particles to form aggregated solid particles, and optionally separating the aggregated solid particles from the aqueous medium. The flocculant is obtained from animal blood. The pH of the aqueous medium may be adjusted to a pH of about 4.5 to about 5.7 by the addition of at least one acid or acidic buffer. The temperature of the aqueous medium may be adjusted to a temperature range of about 10° to about 50° C.

Abstract: A process for removing acid gases from a fluid stream in which a) the fluid stream is treated with an absorption liquid which comprises at least one amine, a stripping aid, and water, wherein the stripping aid is selected from water-miscible liquids, the boiling temperature of which at atmospheric pressure is lower than that of water, b) the treated fluid stream is treated with a liquid aqueous phase in order to convert entrained stripping aid at least in part to the aqueous phase, c) the loaded aqueous phase is heated in order to expel the stripping aid at least in part, and d) the regenerated aqueous phase is cooled and at least in part recycled to step b). The stripping aid promotes the regeneration of the absorbent by stripping. Emissions of the stripping aid via the treated fluid stream are avoided by the treated fluid stream being scrubbed with a liquid aqueous phase.

Abstract: A method for hydroforming hollow metal workpieces includes submerging the same in a reservoir of hydraulic fluid. A press is provided having a hydroforming station located within the reservoir and includes a forming cavity configured to receive the fluid filled workpiece and create a fluid cushion spaced between the outside of the workpiece and the inside of the forming cavity. Sealing mandrels supply high-pressure hydraulic fluid to the interior of the workpiece which hydroform the same to the shape of the final part. The outward flow of fluid from the fluid cushion space is controlled, along with the associated pressure, to maintain the fluid cushion at least until such time as the mandrel pushing step concludes, thereby alleviating friction and adhesion between the formed part and the forming cavity.

Abstract: A process for removing carbon dioxide from a fluid flow, wherein a) the fluid flow is brought into contact with an absorption agent which contains a solution of ammonia and at least one amino carboxylic acid and/or amino sulfonic acid, a charged absorption agent being obtained, and b) the charged absorption agent is regenerated while releasing carbon dioxide. The additional use of the amino carboxylic acid and/or amino sulfonic acid increases the circulation absorption capacity of the absorption agent.

Abstract: Method for producing an open molded sheet metal part from a non-hardenable aluminum alloy that has the following steps: a) a sheet is prepared that is made of a non-hardenable aluminum alloy, the temper of which is H12, H14, H16, H18, H19, H22, H24, H26, H28, H32, H34, H36 or H38 according to European Standard EN 515:1993 and that in addition to aluminum includes at least magnesium and where necessary manganese; b) the aluminum is heated at least locally to a temperature between 200° C. and 350° C. within a period of 1 to 60 seconds; c) the heated sheet is placed in a cold forming die of a forming press and the sheet is formed, creating a molded sheet metal part.

Abstract: An absorption medium for removing acid gases from a fluid stream comprises an aqueous solution of A) at least one cyclic amine compound having solely tertiary amine groups and/or sterically hindered secondary amine groups and B) at least one cyclic amine compound having at least one sterically unhindered secondary amine group. The absorption medium comprises, e.g., an aqueous solution of A) 1-hydroxyethylpiperidine and/or triethylenediamine and B) piperazine. The absorption medium is particularly suitable for separating off carbon dioxide from flue gases and satisfies the following criteria: (i) sufficient capacity at low CO2 partial pressures; (ii) sufficiently rapid absorption rate at low CO2 partial pressures; (iii) stability toward oxygen; (iv) low vapor pressure for reducing solvent losses; and (v) low energy requirement for regeneration of the absorption medium.

Abstract: Methods, devices, and compositions of matter related to high efficiency InGaN-based photovoltaic devices. The disclosed synthesis of semiconductor heterostructures may be exploited to produce higher efficiency, longer lasting, photovoltaic cells.

Abstract: A pipe testing apparatus includes a rupture device for testing a rupture strength of a pipe. The rupture device has two clamping heads respectively accepting associated ends of the pipe which extends between the clamping heads, and a pressure-application system having a feed channel for imposing a fluid upon the pipe. The rupture device includes a tie rod which connects the clamping heads and extends through the pipe in coaxial relationship thereto such that an annular space is formed between the tie rod and the pipe, with the feed channel feeding into the annular space.

Abstract: A cable has a conductor extending therefrom and a partially exposed fluid-containing layer surrounding the conductor. A connector is joined to an end of the conductor, and an electrically insulative, elastomeric tube is covers all of the exposed fluid-containing layer and a portion of the connector. The elastomeric tube is substantially impermeable to the fluid in the cable. For cables having more than one conductor, an additional elastomeric boot is installed over the cable.

Abstract: Flame retardant adhesives and adhesive tape articles include a halogen-free flame retardant composition comprising a phosphinate or phosphinate salt. The halogen-free flame retardant compositions can also include additional materials, such as alumina trihydrate and magnesium hydroxide, that are substantially free of halogenated compounds or materials.

Abstract: A cable has a conductor extending therefrom and a partially exposed fluid-containing layer surrounding the conductor. A connector is joined to an end of the conductor, and an electrically insulative, elastomeric tube is covers all of the exposed fluid-containing layer and a portion of the connector. The elastomeric tube is substantially impermeable to the fluid in the cable. For cables having more than one conductor, an additional elastomeric boot is installed over the cable.