Abstract: With the help of a method of selective removal of hydrogen sulphides, organic sulphur components and CO2 from crude gases, by using a first and second absorption stage (41 or 49) for separating almost pure CO2, a solution has to be found, with which, among other things, hydrogen sulphides and organic sulphur compounds can be removed in as selective a manner as possible. This is achieved as follows: the absorption agent coming out of the first absorption stage (41) and enriched with hydrogen sulphide and CO2 a.o.

Abstract: A method and a device for the absorption of pressurised natural gas containing at least hydrogen sulphide and carbon dioxide, using a physically active absorption agent. The natural gas containing acid gas is first conveyed to an absorption column, where it is directly contacted with the physical detergent, and the physical detergent absorbs the acid gas, leaving only a residue. The charged detergent is conveyed to a stripping column, the working pressure being further reduced. The residue of the released acid gas from the detergent is desorbed in said stripping column. The detergent thus regenerated is returned, at least in part, to the absorption column. The acid gas leaving the first separator is conveyed to another absorption column, in which the part of the released acid gas containing predominately hydrogen sulphide is reabsorbed with regenerated detergent and mixed with the charged detergent from the first separator.

Abstract: An antivibration unit of a portable handheld work apparatus includes a leg spring (3) having at least one wire turn (5) and at least one first wire leg (6). The wire turn (5) extends about a turn or coil axis (4) and is attached at the first component assembly (1) and the first wire leg (6) extends outwardly and tangentially from the wire turn (5). A wire leg end (7) of the wire leg (6) is attached to the second component assembly (2).

Abstract: A hook for fastening a hand-held working apparatus to a belt arrangement (10) has an open frame (46) with an access opening (23) and a closure member (22). The closure member (22) at least partly closes the access opening (23) in a rest position (32) of the closure member (22). The closure member (22) can be swiveled from the rest position (32) to a first open position (33) and to a second open position (34), so that a hand-held working apparatus which is arranged on the belt arrangement (10) can in a simple manner be both fastened to the belt arrangement and detached therefrom. A carrier arrangement with a hand-held working apparatus, a belt arrangement (10) and a fastening device (50) for fastening the working apparatus to the belt arrangement (10) comprises a hook (9) and an element to be engaged in the hook (9).

Abstract: The invention relates to the use of a liquid, containing 0.1 to 100% of an amine or several amines of formula H2N—CH2(CHR2)x—(OCH2(CHR3)y)z—OR1, where R1?C1 to C6 alkyl, R2?H or CH3, R3?H or CH3, x=0 to 3, y=0 to 3, z=0 to 10 and 0 to 99.9% of any further solvent including piperazine and/or water for separating acid gas components from technical gases.

Abstract: The invention relates to a method for recovering absorbed hydrocarbon components while absorbing acid gases from technical gases, as for example a natural gas, by means of physically active absorption agents, wherein the inventive method consists in increasing the pressure of a loaded absorption agent extracted from an adsorption device, in adding said loaded absorption agent to the top of a rectification column which consist of a lower feeding stove and of one or several lateral stoves operating at a pressure slightly greater than the absorption column pressure, in adjusting an equilibrium is said rectification column in such a way that the acid gas concentration in the absorbent agent increases in the direction away from the bottom of the column and the hydrocarbon concentration decreases in said direction, in extracting a heated hydrocarbon-poor and acid gas component-rich absorption agent from the bottom of the column and in transferring said agent to an acid gas desorption device, in extracting a hydroca

Abstract: A handheld work apparatus has an internal combustion engine (14, 44, 94) which has a crankshaft (15, 45, 95) which, in turn, drives a work tool of the work apparatus. The work apparatus has a first component group which includes the crankshaft (15, 45, 95) and which is driven in a first rotational direction (10, 40, 70, 90). In order to hold the gyroscopic forces low which act during operation, the work apparatus has a second component group which includes the work tool and which is driven in a second rotational direction (11, 41, 71, 91) opposite to the first rotational direction (10, 40, 70, 90).

Abstract: A manually guided implement, such as a power saw, a cut-off machine, or the like, having a drive motor for driving a tool of the implement. The drive motor has a drive shaft that is rotatably driven about an axis of rotation. The implement has a handle on which is disposed at least one control handle for the drive motor. Formed between the handle and the drive motor is a vibration space that is spanned by at least one anti-vibration element, at least one of which includes a coil spring, the longitudinal axis of which is disposed approximately perpendicular to a longitudinal plane of the implement. The vibration space is spanned by at least one connecting element, the longitudinal axis of which is inclined relative to a transverse plane of the implement that is disposed perpendicular to the longitudinal plane.

Abstract: A protective shield (2) is provided for a free-cutting tool (1). The free-cutting tool has a cutterhead (4) rotatable about a rotational axis (3) and carries a cutting filament (5). For a rotating cutterhead (4), the cutting filament (5) rotates in a rotational direction (10), aligns itself approximately radially to the rotational axis (3) and defines a cutting circle (6) having a constructively pregiven nominal radius (R). The cutting radius (6) is at least partially covered by the protective shield (2). A cut-to-length knife (7) having a cutting edge (8) for cutting the cutting filament (5) to length is mounted on the protective shield (2) in the peripheral region thereof. The cut-to-length knife (7) is mounted on the protective shield (2) to be moveable back and forth between a cutting position (11) and a rest position (12).

Abstract: The invention relates to a method for producing hydrogen and power from a synthesis gas that contains CO, H2 and H2S. The synthesis gas is separated into two partial streams, vapor is added to the first partial stream of synthesis gas, out a CO conversion is carried out at a temperature of 220° C. to 500° C., pure hydrogen is obtained from the converted synthesis gas in a pressure swing absorption device and a residual PSA gas is produced. The second partial stream of synthesis gas is fed to a power-generating gas turbine for combustion, H2S and optionally other sulfur-containing components are removed in one or more separators that are arranged in any position in the process, however, before entry into the gas turbine, the residual PSA gas is mixed with nitrogen, the gas mixture so obtained is compressed and the compressed gas mixture is admixed to the partial stream of synthesis gas that is fed to the power-generating gas turbine.

Abstract: In order to reduce the formation of inherent vibrations in the coil spring in an anti-vibration element, in particular for a manually operated tool such as a chainsaw, a parting-off grinder or similar device and having a coil spring, an additional mass is positioned on the coil spring.

Abstract: A portable handheld work apparatus has an internal combustion engine (5) having a cylinder (8) and a crankcase (13). The cylinder (8) has an opening (19) for exhaust gases whereat an exhaust-gas muffler (14) is mounted. The exhaust-gas muffler (14) is mounted on the cylinder (8) at least at one attachment location (40, 41) and at least a further attachment location (42) on the internal combustion engine (5). A reduced weight of the work apparatus and a low mechanical load of the exhaust-gas muffler (14) can be achieved when the exhaust-gas muffler is fixed at at least one of the attachment locations (42) via a connection which permits a limited relative movement between the exhaust-gas muffler (14) and the internal combustion engine (5) in at least one direction.

Abstract: A tubular handle for a manually guided implement, especially a power chain saw or the like, is provided. The handle has an essentially circular cross-section and at least one mounting portion for fixing the handle to the implement. In the area of the mounting portion, the circular cross-section is flattened to form an at least approximately planar abutment portion, beyond which a circular cross-sectional portion is retained. The abutment portion is provided for fixing the tubular handle to the implement.

Abstract: A portable handheld work apparatus includes: a vibration suppressor for suppressing translatory vibrations occurring during operation of the work apparatus. A drive motor drives the vibration suppressor which defines a rotational axis. The vibration suppressor includes a suppression mass mounted at a radius from the rotational axis for generating an imbalance and, as a consequence of the imbalance, the suppression mass generates an rpm-dependent translatory vibration. A spring applies a resilient biasing force to the suppression mass in opposition to an rpm-dependent centrifugal force applied to the suppression mass during the rotation. The suppression mass is mounted so as to be radially movable along a path under the action of these forces. The suppression mass defines first and second equilibrium positions along the path at first and second radii from the rotational axis corresponding to first and second rpms of the vibration suppressor.

Abstract: The invention relates to a method for displacing acid gas constituents from natural gas to acid gas removal installations equipped with Claus installations with free capacities. To this end: a portion of the acid gas is removed from a first flow of natural gas containing acid gas; the acid gas removed from the first flow of natural gas is fed to at least one other acid gas removal installation, whereby this feeding results in the acid gas removed from the first flow of natural gas being mixed with at least one second flow of natural gas with which it is transported to at least one other acid gas removal installation. The removal of the acid gas contained in the first flow of natural gas is preferably carried out by means of an absorption method during which the portion of the acid gas to be removed is washed out from the first flow of natural gas by means of a regenerated non-chemically acting absorbing medium.

Abstract: An antivibration element (1) is especially for a portable handheld work apparatus such as a motor-driven chain saw or a brushcutter. The antivibration element includes a coil spring (2) and at least one guide. An end section (7, 8) of the coil spring (2) is fixed to the guide. In order to provide a progressive characteristic line of the coil spring (2) in a simple way, the coil spring (2) has a transition section (11, 12), which borders at the end section (7, 8) and is guided with play on the guide. When the coil spring is under load, the turns of the transition section come at least in part into contact engagement with a helically-shaped slot in the guide so that the spring stiffness of the antivibration unit increases.

Abstract: A carrying arrangement for a hand-guided power tool has a carrying element to be guided across a shoulder of an operator and a shoulder support arranged slidably in a longitudinal direction on the carrying element. A friction-reducing element for reducing friction between the carrying element and the shoulder support is provided. The shoulder support has a shoulder section and a lateral support section connected to the shoulder section. The carrying element is arranged on the shoulder section and the lateral support section rests against a side of the operator. In this way, excellent force distribution during operation is ensured.

Abstract: The invention relates to a method for removing hydrogen sulphide and other acidic gas components from pressurized technical gases by means of a physical detergent and for obtaining sulphur from hydrogen sulphide by using a Claus system. The hydrogen sulphide and the other acidic gas components are removed in an absorbent manner from the physical detergent, the physical detergent undergoes multi-step regeneration, said multi-step regeneration comprising at least one device for CO enrichment, a device for H2S enrichment, a device for CO2 stripping and a device for thermal regeneration. The various regeneration steps consist of various pressure steps and have a lower pressure than that of the absorption. A hydrogen sulphide rich Claus gas is withdrawn from one of the regeneration steps and is guided to a Claus system where sulphur is produced. The residual gas exiting from the Claus system is hydrated and is condensed under pressure, corresponding to one of the regeneration steps.

Abstract: A cover arrangement of a hand-held power tool has a cover having at least one fastening element for connecting the cover to an additional component of the power tool. The cover has a wall component having a shape-elastic yielding support forming a monolithic part of the cover. The at least one fastening element is arranged on the support.

Abstract: A manually guided implement having an engine housing and a handle housing that are interconnected by anti-vibration elements. The handle housing is provided with a longitudinal support having, relative to a conventional operating position of the implement, a front end face that is disposed transverse to a longitudinal axis of the longitudinal support. A securement end of a front tubular handle rests against and is secured to the front end face of the longitudinal support.