Abstract: A recoating unit for equipping and/or retrofitting a device for producing a three-dimensional object by means of selectively solidifying, layer by layer, of a building material in powder form. The recoating unit is configured, depending on its movement in the first direction or in its opposite direction, to receive building material in that chamber that is the trailing chamber in the respective direction of movement and to spread the building material received in the respective trailing chamber to a uniform layer by means of the respective trailing recoating element.

Abstract: Apparatus for separating solid particles from a hydrocarbon-containing fluid produced from an oil and/or gas production facility, supported on a wellhead or a riser connected to a wellhead, the apparatus comprising: a conduit for conveying a hydrocarbon-containing fluid from a wellhead or a riser connected to the wellhead; a solids separator in fluid communication with the conduit adapted to separate solid particles from the hydrocarbon-containing fluid, a solids outlet for outputting solid particles separated by the solids separator, a fluid outlet for outputting hydrocarbon-containing fluid separated by the solids separator; and an output conduit, coupled to the fluid outlet, for conveying the hydrocarbon-containing fluid from the fluid outlet into a production line attached to the wellhead.

Abstract: A vacuum cleaner comprising a separating apparatus comprising a first cyclonic separator and a second cyclonic separator arranged in parallel with the first cyclonic separator, an airflow generator arranged to generate an airflow through the first and second cyclonic separators, and a flow control device for controlling the flow of air through the second cyclonic separator. The vacuum cleaner has a first configuration in which the flow control device is arranged to prevent flow of air through the second cyclonic separator such that, in use, air flows through the first cyclonic separator and bypasses the second cyclonic separator, and a second configuration in which the flow control device is arranged to permit flow of air though the second cyclonic separator such that, in use, air flows through the first and second cyclonic separators.

Abstract: A cyclone assembly includes a first cyclonic cleaning stage. The first cyclonic cleaning stage includes at least one first stage cyclone having a first stage cyclone chamber. Each first stage cyclone chamber has a height extending between a first stage cyclone chamber air inlet and a first stage cyclone dirt outlet. The cyclone assembly also includes a second cyclonic cleaning stage downstream from the first cyclonic cleaning stage. The second cyclonic cleaning stage includes a plurality of second stage cyclones in parallel. Each of the plurality of second stage cyclones has a height extending between a second stage cyclone chamber air inlet and a second stage cyclone dirt outlet. The second cyclonic cleaning stage has a larger number of second stage cyclones than the first cyclonic cleaning stage, and the height of each second stage cyclone chamber is greater than the height of each first stage cyclone chamber.

Abstract: A multi-cyclone sediment filter having a housing with upper and lower shells and defining an interior space for fluid flow. A cyclone holder is disposed in the housing and includes a plurality of fluid cyclones, each comprising a conical tube with a small opening at a lower end and a larger opening at an upper end. A fluid inlet introduces fluid into the filter housing. A fluid outlet in fluid discharges fluid. A manifold plate is disposed above the cyclone holder and includes a plurality of diffuser tubes, each extending downwardly into an upper end of one of the fluid cyclones. Fluid flowing from the fluid inlet is directed into a diverter cone under the manifold plate and is diverted outwardly between the manifold plate and the cyclone holder, into the fluid cyclones, outwardly through the diffuser tubes, and then out through the fluid outlet.

Abstract: A cyclone apparatus for separating a mixture containing at least one fluid and a further constituent based on the densities of the mixture constituents. The apparatus includes a first hollow pressure vessel having an overflow plate positioned at an overflow end of the first hollow pressure vessel and an end plate for sealing the overflow plate. The cyclone apparatus also comprises an underflow plate positioned at an under-flow end of the first hollow pressure vessel and a hollow pressure vessel with one end being sealed against the under-flow plate and another end being closed. The overflow plate and the end plate are shaped such that when they are brought together they form separate adjacent overflow compartments between them. The underflow plate and the second hollow pressure vessel are shaped such that when they are brought together they form separate adjacent under-flow compartments between them which correspond to the overflow compartments.

Abstract: A cyclone classifier for classifying a particulate material, including an outer cylinder having a waistless part and an inverted-cone part vertically connected to an underside of the waistless part, and an inner cylinder which includes an exhaust opening such that the inner cylinder has a position-adjustable bottom end.

Abstract: A multi-cyclone sediment filter having a sediment bowl with a hemispherical bottom and a sump for collecting sediment, a cylindrical cyclone housing disposed above and sealingly connected to the sediment bowl, a removable and replaceable cyclone cartridge inserted into the cyclone housing, a diffuser plate sealingly connected to the cyclone cartridge and cyclone housing, a fluid inlet for introducing fluid into the cyclone housing, and a fluid outlet for discharging fluid from the cyclone housing. The cyclone cartridge inserted in the cyclone housing includes a plurality of vertically disposed inverted cone-shaped fluid cyclones, each having a small opening at a lower end and larger opening at an upper end. The cartridge has a plurality of fluid flow paths that direct fluid to the cyclones where a vortex is induced in the moving fluid.

Abstract: A method for dividing a stream of solids includes discharging the stream of solids via a first downer. The stream of solids are fluidized at a bottom of the first downer by supplying a first conveying gas. By the first conveying gas, a part of the stream of solids are conveyed to a top of a first riser branching off from the first downer. A remaining part of the stream of solids are discharged via a second downer adjoining the first downer. The remaining stream of solids are fluidized at a bottom of the second downer by supplying a second conveying gas. By the second conveying gas, a part of the remaining part of the stream of solids are conveyed to a top of a second riser branching off from the second downer.

Abstract: A dry cleaning apparatus separates heavy objects from mixture of the heavy objects and light objects having specific gravities smaller than those of the heavy objects. The dry cleaning apparatus includes a casing having a tubular shape having a center axis, an internal cylinder provided in the casing, a recovery section for recovering the heavy objects, a loading section for loading the mixture to above the internal cylinder, a flow inlet for introducing air to between the casing and the internal cylinder, and an outlet for discharging the light objects and air from between the casing and the internal cylinder. The casing has an inner surface extending substantially in parallel to a center axis. The internal cylinder has an upper surface having a center portion projecting upwardly, and has an outer surface having a portion which extends in parallel to the inner surface of the casing and which faces the inner surface of the casing. The recovery section is located under the internal cylinder.

Abstract: A cyclone used in a separator apparatus includes a body and a vortex finder. The body includes an inlet passageway, a cylindrical passageway connected to the inlet passageway, and a conical passageway connected to the cylindrical passageway. The cylindrical passageway has an upper end through which first particles in a fluid are exhausted, and a lower end. The conical passageway has an upper end connected to the lower end of the cylindrical passageway, and an opened lower end through which second particles having a specific gravity greater than that of the first particle are exhausted. The vortex finder is connected to the upper end of the cylindrical passageway. A first exhaust passageway is vertically formed in the vortex finder so that the first particles spirally ascend through the first exhaust passageway from the cylindrical passageway.

Abstract: A circulating fluidized bed including a reaction chamber connected by an acceleration duct to a centrifugal separator which separates hot gas particles derived from the chamber. The acceleration duct is arranged partly in the upper part of the chamber.

Abstract: A method and a device classifies splinters and wood chips. The device includes a centrifugal classifying unit, a countercurrent classifying unit, a separating funnel for the coarse fraction and a separating cyclone for the fine fraction. A gas or a gas mixture is circulated in the system via a blower. It is tangentially introduced into the lower classifying chamber, initially flows through the countercurrent classifier, through the gaps between the blades of the centrifugal classifier and then into the separating cyclone before being returned to the blower.

Abstract: A cyclone used in a separator apparatus includes a body and a vortex finder. The body includes an inlet passageway, a cylindrical passageway connected to the inlet passageway, and a conical passageway connected to the cylindrical passageway. The cylindrical passageway has an upper end through which first particles in a fluid are exhausted, and a lower end. The conical passageway has an upper end connected to the lower end of the cylindrical passageway, and an opened lower end through which second particles having a specific gravity greater than that of the first particle are exhausted. The vortex finder is connected to the upper end of the cylindrical passageway. A first exhaust passageway is vertically formed in the vortex finder so that the first particles spirally ascend through the first exhaust passageway from the cylindrical passageway.

Abstract: A cyclone separator has at least one baffle spaced inwardly from the cyclone separator housing to serve as a false wall which allows particles that separate from the gas stream to fall down between the baffle and the housing without being re-entrained into the gas stream.

Abstract: A cyclone separator including an initial cyclone arrangement (1) arranged first in relation to a flow direction (18) through the separator; a second cyclone arrangement (2) connected in series with the initial cyclone arrangement; a bypass channel (3) bypassing the second cyclone arrangement (2), and a volumetric flow controlled valve device (4) for selectively directing a partial stream (5) through the bypass channel (3).

Abstract: Process for recovering at least 70% of hollow glass microspheres having an average diameter, according to the ASTM D1214-1989, ranging from 5 to 200 ?m contained in a mixture of drilling mud and cuttings which comprises: a) screening, if necessary, the mixture through one or more 5 to 20 mesh sieves; b) feeding the screened mixture to one or more cyclones and/or hydrocyclones arranged in series, each of which is fed with a volume flow-rate from 1.5 to 10 times higher than the maximum nominal operating value.

Abstract: A cyclone arrangement for separating particles or droplets from a fluid stream, including at least two cyclones (1, 2, 3; 21, 22, 23), which have a tangential intake opening (4, 5, 6; 24, 25) for the fluid stream and set the fluid stream into rotation so that due to the resulting centrifugal force, particles or droplets to be separated from the fluid stream may be discharged from the cyclone separator through discharge openings (10, 11, 12). A plurality of cyclones are connected in parallel, and the intake openings (4, 5, 6) of the cyclones are closed or opened by a common slider (17; 24), which also has an opening (15, 16, 17; 24, 25) in the vicinity of each cyclone intake opening for passage of the fluid stream. The position and size of each slider opening is designed such that in various slider settings, the fluid stream will reach a different number of cyclone intake openings.

Abstract: A separator that provides a convergent conical flow path for a mixture introduced into the separator at fairly high velocity. Within the convergent flow path, the angular velocity of the spiraling mixture increases such that heavier species are segregated from lighter species. The convergent flow path transitions into a substantially uniform flow path where the spiraling mixture maintains a fairly uniform velocity and further separation occurs. The uniform flow path then transitions to a divergent conical exhaust flow path where some or all of the heavier species are exhausted from the separator. Within the substantially uniform flow path, a retrograde flow of the lighter species is created with an interaction with a diffuser surface arranged in the exhaust flow path. As such, the lighter species are channeled to a separate exit port to provide some degree of separation of the mixture.

Abstract: The present invention relates to a method and apparatus for separating particulate matter from a gaseous stream. According to the method, the gaseous stream containing the suspended particulates is passed into a separator apparatus which includes at least two multiple-inlet-multicyclones (16-16C), wherein the particulates are separated from the gas by centrifugal force. According to the invention, a separator apparatus is employed wherein at least two (16-16C) of the multiple-inlet cyclones are adapted to operate in parallel so as to form a multiple-inlet-multicyclone apparatus. The cyclone assembly according to the invention may be used as, e.g., the primary separator of an FCC unit, but more advantageously it serves as the secondary or tertiary separator of an FCC unit to remove “fines” from the flue gases of the preceding separation stages.

Abstract: A cyclone separator having an improved efficiency to remove a broader spectrum of contained particles is disclosed. The cyclone separator is provided with a member positioned to interact with at least the inner portion of a fluid circulating within the cyclone cavity to impart changes in the acceleration of the fluid as it rotates within the cyclone cavity.

Abstract: A powder supply system including a powder replenishment device as a powder source, a suction device and a plurality of powder supply units connected in series. Each of the powder supply units sprinkles powders toward an object mounted on each processing device. An upstream end powder supply unit is fluidly connected to the powder replenishment device, and a downstream end powder supply unit is fluidly connected to the suction device. A suction force generated by the suction device sucks powders from the powder replenishment device through the powder supply units, and powders are successively accumulated in the powder supply units in the order from the upstream end powder supply unit to the downstream end powder supply unit. A powder sensor is provided between the rearmost powder supply unit and the suction device. If all powder supply units are filled with powders, residual powders are discharged out of the downstream end powder supply unit.

Abstract: A cyclone separator assembly comprising a pressure vessel divided internally by first and second generally parallel dividing plates to define an overflow chamber, an underflow chamber, and an inlet chamber intermediate the overflow and underflow chambers, the dividing plates having aligned bores therein for receiving and supporting respective end regions of respective cyclone separator tubes, the ends of the bores in the first dividing plate opening into the overflow chamber being partially obstructed by restraining means restricting displacement of the cyclone tubes in a direction towards the overflow chamber.

Abstract: An apparatus and method for cleaning, desanding, and desilting drilling mud which contains unwanted solids utilizes an enclosure divided into a plurality of compartments connected with a system of vibratory screen shaker separators, desanders, and desilters. Drilling mud is separated by a primary vibratory shaker into coarse solids which is discarded and screened liquid mud which enters a first compartment and is further separated by a desander cyclone into a lighter liquid mud faction and a heavier liquid mud faction. The lighter faction is sent back to the first compartment and recycles, the heavier faction is further separated by a second vibratory shaker and enters a second compartment, and the solids are discarded. The liquid mud from the second compartment is further separated by manifolded desilter cyclones into a heavier faction and a lighter faction.