Abstract: Apparatuses and processes that produce multimodal polyolefins, and in particular, polyethylene resins, are disclosed herein. This is accomplished by using two reactors in series, where one of the reactors is a multi-zone circulating reactor that can circulate polyolefin particles through two polymerization zones optionally having two different flow regimes so that the final multimodal polyolefin has improved product properties and improved product homogeneity.

Abstract: Apparatuses and processes that produce multimodal polyolefins, and in particular, polyethylene resins, are disclosed herein. This is accomplished by using two reactors in series, where one of the reactors is a multi-zone circulating reactor that can circulate polyolefin particles through two polymerization zones optionally having two different flow regimes so that the final multimodal polyolefin has improved product properties and improved product homogeneity.

Abstract: Apparatuses and processes that produce multimodal polyolefins, and in particular, polyethylene resins, are disclosed herein. This is accomplished by using two reactors in series, where one of the reactors is a multi-zone circulating reactor that can circulate polyolefin particles through two polymerization zones optionally having two different flow regimes so that the final multimodal polyolefin has improved product properties and improved product homogeneity.

Abstract: A process and apparatus of a gas-solids separator are provided in which a cap is disposed across an upstream end of swirl blades in a cyclonic separator to protect the blades from erosion by fast traveling solids.

Abstract: A classifying apparatus including: a rotor with a plurality of annularly disposed blades, which rotates; and a louver with a plurality of blades which are disposed at an outer circumferential portion of the rotor so as to supply from the outer circumferential portion a fluid for dispersing and classifying a powder material, wherein the powder material is supplied to a gap between the rotor and the louver and centrifugally classified into fine powder and coarse powder, and wherein at least one of the following relationships is satisfied: Relationship (1): ??50° Relationship (2): D2/D1?1.17 where ? denotes an angle formed between imaginary lines connecting the center of the rotor with both ends of each blade of the louver, D1 denotes a diameter of the rotor, and D2 denotes an inner diameter of the louver.

Abstract: An apparatus for treating a liquid includes a first flow generator having an outlet for generating a first flow stream and a reaction chamber positioned in proximity to the outlet of the first flow generator and having a cavity adapted to receive the first flow stream from the first flow generator and reverse its direction within the confined space of the cavity. The flow generator may be a cavitation generator for producing multiple cavitation bubbles in the first slow stream, or a nozzle for generating a flow stream devoid of cavitation bubbles. A method for treating a liquid includes directing the liquid into a first flow generator configured to generate a first flow stream of the liquid, and directing the first flow stream from the first flow generator into a cavity of a reaction chamber.

Abstract: A device for separating a flowing medium mixture into at least two different fractions with differing average mass density, comprising an elongate separating space which is circle-symmetrical in axial direction and enclosed by a stationary casing (2), wherein the casing is provided with feeds for a mixture for separating and at least two discharges (9, 10) for discharging at least two fractions with differing mass density, and rotation means located in the separating space for causing the mixture to rotate as a vortex in the separating space. Also disclosed is a method for separating a flowing medium mixture.

Abstract: Disclosed is a centrifugal separator with an inlet channel for a flow containing coarse and fine particles, a first outlet channel for a flow containing predominantly coarse particles, a second outlet channel for a flow containing predominantly fine particles and a separator chamber with at least one separator device, wherein the separator chamber connects the inlet channel to the first outlet channel and the second outlet channel, and wherein the inlet channel, the separator channel and the two outlet channels form a flow path. To improve the degree of efficiency, as a first separator device, one or more separator pockets are arranged in the separator chamber, which project into the flow path. Also disclosed is a corresponding method for the separation of a flow containing coarse and fine particles.

Abstract: A system and process for separating high and low density materials by air flow. Mixed solid material is delivered into an entrance of a cascade separation chamber where it is allowed to free fall and tumble over inclined surfaces. A fan forces air through a “closed” path that includes a duct from the fan outlet to return air to the separation chamber, and a branch duct that supplies an air knife disperser arranged to direct a high velocity air jet against free falling material in the chamber. The fan draws air that has entrained relatively light materials in the chamber, and thereby separates the same from the heavy materials, from the chamber through a duct connected to the inlet of an air cleaning device such as a cyclone separator. Cleaned air exhausted from the cyclone cleaning device and driven by the fan is continuously returned to the separation chamber. Air flow through the chamber is generally in counter-flow relation to the movement of heavy material through the chamber.

Abstract: Disclosed is a waste separation apparatus comprising a vortex initiator (10) and a vortex generator (20). The vortex generator (20) is arranged to direct the airflow from the vortex initiator (10) towards the waste to be separated. The airflow is used to separate less dense waste from more dense waste.

Abstract: An air material separator may be used to separate scrap from a conveying air flow while having a relatively low weight and short height so that the separator may be positioned within today's single-story manufacturing or processing facilities. The air material separator of the invention includes a generally cylindrical inlet chamber having a spiral wall that directs the inlet flow circumferentially and downwardly. An outlet chamber is positioned below the inlet chamber and includes a conical, perforated wall that allows the conveying air flow to escape through the perforated wall. The scrap carried by the conveying air flow cannot pass through the perforated wall and moves down and out an outlet at the bottom of the conical wall. The overall height of the device is substantially less than prior art air material separators.

Abstract: A hydrocyclone separator (10) has an outer housing (12) including an upper housing portion (14) and a lower housing portion (16). Upper housing portion (14) has a cylindrical chamber (22) and an involuted entrance (20) to cylindrical chamber (22). A vortex finder tube (24) has a flaring lower end portion (29). A solid core (34) is mounted within finder tube (24) and extends downwardly from finder tube (24) a distance at least equal to 11/2% times the inner diameter of the entrance orifice or opening (30) of finder tube (24). The outer peripheral surface (40) of solid core (34) tapers downwardly and is generally parallel to the inner peripheral surface (44) of lower tapered chamber (46). A strong interface (48) is formed between the downwardly extending outer vortex and the upwardly extending inner vortex with minimal turbulence and intermingling of particles between the inner and outer vortices.

Abstract: A particle separator having a housing, a radially centered core, helical augers which force a fluid stream in a helical flow direction, and separator devices for the progressive separation of particles from a particulate contaminated fluid stream.

Abstract: There is provided a hydrocyclone which operates on a relatively low pressure differential and on a linear flow principle. The hydrocyclone comprises an inlet chamber with a vortex creating a spiral insert therein, which inlet chamber opens in to a frustoconical portion of the hydrocyclone body. The frustoconical portion opens into a cylindrical portion which leads both to the accept and reject outlets at the end. The hydrocyclone is particularly useful for on sight separation of produced water in oil fields. The invention also provides hydrocyclone units of linked hydrocyclones according to the present invention, fluid separation systems incorporating hydrocyclones of the invention and methods of separating fluids using hydrocyclones in the invention.

Abstract: Pollution separator and purifier apparatus (10) for at least one fluid mixture comprises: an inlet member (14) for admitting the fluid mixture to be treated into a stationary cylindrical body (12); a rotor mounted in the cylindrical body (12) and having a stack of at least two plates (18) with openings, cooperating with means that generate a pressure drop in the top portion of the apparatus and generating upward helical motion in the mixture to be treated; a hopper (22) for collecting the heavy phase, connected to the cylindrical body (12) beneath the rotor (16) and provided with forced evacuation means (24); and an extractor member (26) for extracting the treated mixture, and connected to the cylindrical body (12) above the rotor (16).

Abstract: A device for separating and filtering particles in a flow of contaminated fluid, the device including a casing having an inlet duct fitted with a cyclone separator designed to concentrate centrifugally particles in the inlet flow towards the periphery of the flow, a tubular element mounted in the casing with the upstream end of the element adjacent the inlet duct and having a diameter smaller than the inlet duct so that the substantially clean fluid from the cyclone separator flows into a central flow path within the tubular element and the contaminated fluid from the separator flows into a peripheral flow path between the tubular element and the casing, and a filter mounted in the casing adjacent an outlet duct so that the clean fluid in the central flow path passes through a central passage of the filter to the outlet duct and the contaminated fluid in the peripheral flow path is filtered by the filter to form a filtered flow which mixes with the clean fluid in the central passage whereby the fluid flow rat

Abstract: A centrifugal cleaner is constructed so that its efficiency is less sensitive to consistency changes of the feed slurry, and so that it can operate at a higher consistency than conventional cleaners, yet optimizes separation efficiency. This is accomplished by disposing a turbulence generator in the tangential inlet to the cleaner, the turbulence generator comprising an abrupt cross-sectional area reduction (e.g. a cross-sectional area of about 0.1-0.3 times as large as the cross-sectional area of the inlet) so as to break up fiber flocs and prevent reformation of the flocs. Existing centrifugal cleaners can easily be retrofit by the method of the invention to achieve the invention's advantages by inserting a turbulence generator into the inlet of an existing centrifugal cleaner. The tangential inlet leads to a hollow main body which includes a vortex finder located in the body top.

Abstract: The present invention is directed to an improved method and apparatus to separate solids particles from a liquid medium and/or classify suspensions of particles according to particle characteristics by centrifugal force, wherein the feed stream is introduced to the cyclone apparatus at a location along the central internal axis of the cyclone.