摘要:
A device for micro-, ultra-, or nanofiltration that includes one or more flat filter modules having flat filter elements arranged in parallel and at a distance from each other and gas injectors of one or more gas lifting systems for producing a circulating cross flow directed tangentially to the surface of the flat filter elements and having at least one rising area, in which the cross flow flows substantially vertically upward, and at least one falling area, in which the cross flow flows substantially vertically downward, in which the rising area flows through 10 to 100% and the falling area flows through 10 to 100% of an inlet-flow volume of the at least one flat filter module.
摘要:
A component, designed so that the longitudinal grain which experiences the greatest stress has a larger grain width than the other grains, is provided. This longitudinal grain is usually on the edge of the component. The component includes longitudinal grains that are directionally solidified in a rod-crystalline form along the longitudinal axis of the component.
摘要:
Process for the preparation of N-carboxymethyleneanthranilic acid esters of the formula (3) ##STR1## by reacting a compound of the formula (1) ##STR2## in which R' is hydrogen or a straight-chain or branched alkyl radical having 1 to 4 carbon atoms and R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are identical or different and independently of one another are hydrogen, halogen, NO.sub.2, a straight-chain or branched alkyl, alkoxy or halogenated alkyl radical having in each case 1 to 6 carbon atoms, with a glyoxylic acid ester of the formula (2) OHC--COOR (2) in which R is a straight-chain or branched alkyl radical having 1 to 20 carbon atoms, phenyl radical or benzyl radical, which are unsubstituted or mono- or polysubstituted by halogen or an alkyl or alkoxy group having in each case 1 to 4 carbon atoms, in the presence of a solvent at 0.degree. to 200.degree. C., optionally separating off the water formed during the reaction, and reducing the reaction product with hydrogen in the presence of a hydrogenation catalyst at a temperature of 0.degree. to 200.degree. C. under a pressure of 1 to 150 bar.
摘要:
The invention relates to a method for inspecting especially a gas turbine installation or steam turbine installation. An actual condition of a component of the turbine installation is determined using a suitable system, the determined actual condition is compared with a predetermined desired condition of the component, and the result of comparison between the actual condition and the desired condition is used to determine whether an overall inspection of the turbine installation is required. The component is a guide vane whose angular position in relation to the direction of influx is the actual condition to be determined. The actual condition is determined by an imaging device. The invention also relates to a turbine inspection system for carrying out the method.
摘要:
The invention relates to a laser scanner device (1) having a laser beam emission apparatus (2) which is designed to emit at least one laser beam (3) in an emission area, having a mirror (4), which is arranged at least partially in the emission area, and having a receiving apparatus which is designed to receive reflections of the laser beam (3). The laser scanner device (1) has a first drive device (10, 40), a first kinematic chain (11, 12, 13, 16, 17, 18, 42) which can be moved by the first drive device (10, 40), a second drive device (20, 41) and a second kinematic chain (21, 22, 23, 26, 27, 28, 43) which can be moved by the second drive device (20, 41), wherein the mirror (4) is connected to the first and to the second kinematic chain and can be scanned in mutually independent coordinate directions (X, Y) via the first and the second kinematic chain.
摘要:
The invention relates to a filtration device including a flat filter module and a base housing, on which the flat filter module is placed. A wall of the base housing includes a polymer cellular lightweight construction material, or a fiber composite material.
摘要:
A hydrodynamic retarder with tangential inflow and outflow is formed with at least one radial recess (3), in the stator, which extends radially outward when viewed in the radial direction. The at least one radial recess (3) is arranged so as to enable one of back-feed and back-filling of the oil, emerging through the tangential outlet, into the pressure space.
摘要:
Components comprising corrosion products are often reused, in which case the corrosion product has to be removed. According to the prior art, this takes a very long time since the reaction times with the corrosion product are often very long. According to the invention, the corrosion product is pretreated in order to produce a larger attackable surface area, so that the corrosion product can be removed more quickly.
摘要:
A process for preparing N-carboxymethylene-4-chloroanthranilic acid, and its dialkyl esters. The invention relates to a process for preparing N-carboxymethylene-4-chloroanthranilic acid and its dialkyl esters, which comprises reacting 2,4-dichlorobenzoic acid in the presence of a base, of a solvent and of a catalyst with glycine to give N-carboxymethylene-4-chloroanthranilic acid and, where appropriate, reacting the latter in the presence of a base and of a solvent with a dialkyl sulfate, dialkyl carbonate or alkyl halide to give the dialkyl ester.
摘要:
A device for micro-, ultra-, or nanofiltration that includes one or more flat filter modules having flat filter elements arranged in parallel and at a distance from each other and gas injectors of one or more gas lifting systems for producing a circulating cross flow directed tangentially to the surface of the flat filter elements and having at least one rising area, in which the cross flow flows substantially vertically upward, and at least one falling area, in which the cross flow flows substantially vertically downward, in which the rising area flows through 10 to 100% and the falling area flows through 10 to 100% of an inlet-flow volume of the at least one flat filter module.