Abstract: A shaft bearing device for a pump includes an antifriction bearing, which can be connected to an axially displaceable pump shaft. A spring is arranged at the antifriction bearing in such a way, that a spring force can be transmitted to an outer ring of the antifriction bearing by the spring in a mounting condition of the shaft bearing device. A lifting element attached to the pump shaft and a corresponding counter element are separated from each other by the spring force in a starting state and/or in a shutdown state of the pump.

Abstract: A flotation apparatus for separating oil from a dispersion containing water as a continuous phase and oil as a dispersed phase. The apparatus comprises a vessel having one or more longitudinal cell sections in its longitudinal direction, at least one of the one or more longitudinal cell sections comprising: an underflow weir, an overflow weir displaced downstream from the underflow weir, a gas injection structure located below the underflow weir or in the channel formed between the underflow weir and the overflow weir, a removal structure for removing a fraction formed during the operation of the flotation apparatus on the liquid level from the liquid level, and a hydraulic structure for hydraulically pushing the fraction formed during the operation of the flotation apparatus on the liquid level into the removal structure using a liquid stream, a liquid/gas stream and/or a gas stream that is ejected by the hydraulic structure.

Abstract: A method for manufacturing a component of a rotary machine, the component extending to an axial direction and a radial direction vertical thereto, and has an inner channel, extending from a first end of a core of a center of the component and to a second end at a radial limiting surface of the component and which is at least partially closed. A blank includes the core of the component and is limited by an outer surface in the radial direction. The blank is subtractively processed in a first subtractive process step, such that an outer contour is elaborated in the area of the outer surface, which extends in the radial direction, and a part of the channel is manufactured, which radially extends in the blank to the first end. The channel is finished by a build-up process on the blank.

Abstract: Aspects of the disclosure provide a screw conveyor for discharging solids from a solid/liquid waste stream is provided and comprises a cylindrically shaped screen segment including perforated screen segments and an inlet for receiving a stream including solid and liquid materials, the perforated portions configured to permit liquids and smaller materials to pass therethrough. The conveyor includes a rotor auger disposed within the screen segment and includes helical flights configured to move solid materials larger than perforations on the perforated screen to move vertically when rotated. A drive motor is included to rotate the rotor auger and anti-rotation elements are disposed radially outward between adjacent perforated screen segments and configured to prevent rotation of solid materials to permit the rotor auger to move the solid materials in an axial direction of the rotor auger rotation.

Abstract: A process to produce a polyester polymer by polymerization of a cyclic polyester oligomer composition comprising a cyclic polyester oligomer having furanic units in the presence of a plasticizer, as well as the polyester polymer obtained thereby.

Abstract: A centrifugal pump for conveying a fluid includes a housing having an inlet and an outlet for the fluid. An impeller is arranged in the housing for rotation in an axial direction to convey the fluid from the inlet to the outlet, a shaft extends in the axial direction for driving the impeller, and a stationary guide device for guiding the fluid from the impeller to the outlet is connected to the housing. A resilient compensating element is disposed between the housing and the guide device, is arranged around the shaft, and holds the guide device in a centered position to the impeller during a radial relative movement to the housing.

Abstract: A rotary machine for mixing, pumping or agitating a fluid includes an impeller for acting on the fluid, a drive unit for rotating the impeller around a rotation axis, a drive shaft connecting the impeller with the drive unit, a mounting flange for fastening the rotary machine to a wall of a vessel, and a support structure for supporting the rotary machine, the support structure comprising at least one leg, each leg extending in a vertical plane from a first end along a longitudinal axis to a second end, each leg including an outer member and an inner member coaxially arranged in the outer member, and the inner member slidingly movable relative to the outer member for adjusting the length of the respective leg. In addition, a method of mounting a rotary machine for mixing, pumping or agitating a fluid to a wall of a vessel is proposed.

Abstract: A pad for a tilting pad thrust bearing for supporting the shaft of a rotary machine includes a top surface, a leading edge extending in a radial direction and a trailing edge. The pad further includes a fluid channel arranged at the top surface, the fluid channel ending in the top surface, and the fluid channel forming a fluid communication between the leading edge of the pad and the top surface of the pad.

Abstract: A method for manufacturing a component of a rotary machine, the component extends in an axial direction and a radial direction vertical thereto, and has an inner channel, extending from a first end in a center of the component to a second end at a radial limiting surface of the component and which is partially closed. A blank includes the center of the component and is limited by an outer surface in the radial direction. The maximum dimension of the outer surface in the radial direction is smaller than the dimension of the limiting surface in the radial direction, A first subtractive process step is performed such that a part of the channel is manufactured by a machining process, with the part extending from the first end of the channel to the outer surface of the blank. Afterwards the channel is finished by a build-up process on the blank.

Abstract: A stage piece for a multistage pump includes a first ring, a second ring, and a post. The connects the first ring to the second ring and has a first radial end and a second radial end and a first side and a second side connecting the first and second ends. The first and second sides are arcuate and extend toward each other such that the first radial end is longer that the second radial end.

Abstract: A vane assembly includes a plurality of vane units and a connecting part. Each vane unit includes a base having a through-hole positioned between opposing longitudinal faces of the base. The connecting part includes a lacing bar that is insertable into and through the through-holes for coupling at least two adjacent vane units into the vane assembly. In the vane assembly the connecting part is arranged through the through holes of the plurality of vane units clamping the vane units on the lacing bar.

Abstract: A system for comminuting solid waste material including a casing defining a comminution chamber having two side walls and adapted for connection in a solid waste disposal channel. The system includes a first shredding device and a second shredding device disposed along a line extending perpendicular to a flow direction in the channel to form a pair of interactive shredding members. A rotating screening drum disposed within the casing upstream of the first and second shredding devices and positioned between the first and second shredding devices, the rotating screening drum configured to permit fluid to pass therethrough and to move solids toward one of the shredding devices. The rotating screening drum is configured to rotate clockwise and counter clockwise to alternately distribute solids captured thereon to one of the first and second shredding devices.

Abstract: A pump assembly includes a vertical pump arranged in a canister. The vertical pump includes a pump column disposed between a pump head and a pump bowl in an axial direction. The pump is arranged in the pump column and is configured to pump a fluid a column inlet at the pump bowl to a column outlet at the pump head. The pump column is supported so as to be stabilized by at least two damping arms disposed on an outer surface of the pump column, and each damping arm has an support end to support a respective damping arm on an inner surface of the canister in a radial direction perpendicular to the axial direction. Each support end is movable independently from each other support end with respect to the axial direction.

Abstract: The invention is directed to a combined naphtha hydrotreating (NHT) and isomerization process scheme, which includes dividing wall columns (DWC) that replace multiple distillation columns and allow optimized heat integration within the system. The disclosed design provides reductions in both capital and energy costs compared to conventional schemes.

Abstract: A process to prepare a (iv) cyclic polyester oligomer composition includes a cyclic polyester oligomer having furanic units and two to five repeat units. The process includes (a) reacting a monomer composition including: (i) a bifunctional furan-derivative and (ii) a diol in an linear oligomerization step to produce a (iii) linear oligomer composition including a linear oligomer species, (b) reacting the (iii) linear oligomer composition in a distillation-assisted cyclization (DA-C) step to form a (iv) cyclic polyester oligomer composition and a (v) diol byproduct. The (v) diol byproduct is removed by evaporation in the distillation-assisted cyclization (DA-C) step.

Abstract: Apparatuses, systems and methods for separating highly pure unsaturated olefinic hydrocarbon stream with zero cooling water and or steam consumption, with minimum possible capital investment and uncompromised operational ease are disclosed herein from a mixture of hydrocarbon stream consisting of saturated and unsaturated hydrocarbons. Embodiments of the invention are directed to producing a hydrocarbon stream containing polymer, chemical grade ethylene, propylene, butylenes, isoprene, hexane stream which are of value in manufacturing chemicals, polymers, and rubbers. Embodiments of the process provided can be applied to concentrating ethylene, propylene, butylenes, cyclopentadiene, isoprene, 2 methyl butene-2, isopentane, hexene etc.