| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 101 | Method and apparatus for the flotation of dispersions | US800075 | 1985-10-23 | US4722784A | 1988-02-02 | Wolfgang Barnscheidt |
| In deinking, the flotation of fiber suspensions is performed in a cylindrical tank 2 to which the fiber suspension is fed through a coupling means 36 as primary stream. The fiber suspension is already aerated and is withdrawn through a suction connection 33 below the coupling means 36 and fed after another aeration through a secondary connection 35 above the coupling means. The volume of the circulated secondary stream is greater than the volume of the primary stream. It is thereby assured that the fiber suspension is aerated at least twice and thus better cleaned. | ||||||
| 102 | Aerating apparatus | US805471 | 1985-11-20 | US4721562A | 1988-01-26 | Wolfgang Barnscheidt; Horst von Borries; Robert Rautenbach; August Schiffermuller; Hubert Zimmermann; Jean-Pierre Lamort |
| The aeration of dispersions, especially the aeration of fiber suspensions in a flotation apparatus 1, is performed with a ring injector 2 to which air is delivered through air feed ducts 11 in the mixing section 4. The annular gap forming in the ring injector 2 is thus aerated inside and out. The center core 7, which tapers in the direction of the greatest free cross section Q4 of the ring injector 2, is provided with a fin 56 which prevents the rotation of the dispersion. | ||||||
| 103 | Apparatus for eliminating by flotation impurities in the form of solid particles contained in a liquid | US834883 | 1977-09-20 | US4186094A | 1980-01-29 | Enar V. Hellberg |
| Apparatus for eliminating impurities by flotation of such impurities wherein a stream of air is injected into a flow of liquid in a flotation cell so as to form distributed air bubbles fixed on the impurities, which air bubbles rise to the surface for their discharge as foam. | ||||||
| 104 | Froth flotation | US864797 | 1977-12-27 | US4165279A | 1979-08-21 | Christopher C. Dell |
| Apparatus for use in froth flotation comprising at least four parallel upright partition walls defining flotation columns within a receptacle. Below each partition wall is a froth generator driven by a shaft passing through the thickness of the partition wall. Rods of differential buoyancies divide each flotation column into flotation cells in such a way as to permit froth to pass upwardly from one cell to another in a controlled manner maintaining a predetermined froth thickness in each cell. | ||||||
| 105 | Apparatus for and method of filtering solid particles from a particulate-bearing liquid | US536974 | 1974-12-23 | US3977970A | 1976-08-31 | Roderick M. Willis; Charles L. Oldfather |
| Waste water containing particulate matter is saturated with air or other gas by a dynamic mixer and ejected into a gravity filter system at a point above the filter media but below the water surface level. Upon entering the filter tank, the dissolved gas is released, forming small bubbles on filterable particles to float these particles to the surface for removal. The system further includes a back pressure valve at the sewage inlet port which, if obstructed, is automatically flushed. During the backwash cycle, the water level above the filter bed may be lowered to the level of a wash-through zone, and filtered water then pumped upward through the filter media, thereby carrying particles from the filter media out through the wash-through zone. | ||||||
| 106 | Flotation machine and impeller therefor | US47974974 | 1974-06-17 | US3882016A | 1975-05-06 | GREEN CHARLES A |
| An impeller for a flotation machine having an upper circular plate with a central hole for supplying air through a hollow shaft to the underside, and a lower circular plate having a larger central hole and sloping toward the first plate to the outside, together with a series of radial, upright vanes between the plates which are thicker at their outer edges than at their inner edges, both of which are rounded. A series of radial fingers shorter than the vanes extend upwardly from the periphery of the upper plate. These fingers are also thinner at their inner rounded edges and thicker at their outer rounded edges. The impeller may be utilized with an open top stabilizer including radially outwardly extending vanes which are thicker at their inner rounded edges and thinner at their outer edges. The stabilizer vanes may be formed of center plates welded to a support bar structure extending around either the outside of the vanes or disposed angularly of the lower outer corner thereof. The stabilizer vanes and support bars may be covered with rubber, which may be molded to provide the desired rounded inside edge and variations in thickness. In the preferred stabililzer, a rubberized top cover which covers the space above the vanes, or a cover formed as a quadrant at each corner or as a series of annular rings, may be used. The cover merely rests on the vanes but hold down rods may extend from the cover or parts thereof to the inside of the tank walls. Both stabilizer vanes and the impeller are spaced above the bottom of the tank of the flotation machine, so that a recirculation of pulp around and above the impeller between the stabilizer vanes is obtained, as well as an outward discharge of pulp by the fingers into the spaces between the stabilizer vanes. Not only is the efficiency increased, but also the problem of ''''sanding up'''' in the bottom of the tank is overcome, particularly when the cover for the outward vanes is utilized.
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| 107 | Device for removing floated material in flotation processes | US24447272 | 1972-04-17 | US3828935A | 1974-08-13 | ROVEL J |
| Device for giving a reinforced structure to the cake of floated materials in flotation processes during the operation of removing the floated materials. The device comprises essentially a grillage of vertical walls inserted in the liquid containing the materials in suspension to be floated.
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| 108 | Continuous clarification-filtration method | US3642618D | 1968-10-07 | US3642618A | 1972-02-15 | SILVA RENE NARCISCO |
| Method and apparatus to improve the adhesion between the air or gas bubbles used in a flotation clarifier and the floc already formed with the use of one or more chemicals or coagulant aids, by adding the necessary electrical charge to said air or gas bubbles in order to make them adhere more efficiently to said floc.
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| 109 | Aerating apparatus | US34345840 | 1940-07-01 | US2348990A | 1944-05-16 | MCNEILL HARRY L |
| 110 | FLOTATION PLANT AND ITS USES, A METHOD OF CHANGING A FLOTATION TANK IN A TANK MODULE AND A METHOD OF CHANGING A MODULE | US15571908 | 2015-05-13 | US20180161784A1 | 2018-06-14 | Pekka TÄHKIÖ; Jukka LAKANEN; Matti LUUKKONEN |
| A flotation plant includes a tank module which includes a self-supporting framework having an inner space. The tank module includes at least one flotation tank. The flotation tank is disposed in the inner space of the self-supporting framework. The tank module is a self-supporting unit capable of being transferable and hoistable as an integral entity. The flotation plant includes at least two drive units for the rotation of drive shafts, each drive shaft being connected to a rotor for mixing and/or forming bubbles in the flotation tank. An overflow receptacle is disposed at the level of the upper part of the tank module for receiving an overflow from the flotation tanks. The flotation plant includes an overflow channel which is connected to the overflow receptacle for receiving and conducting the overflow from the overflow receptacle to a pumping means. The overflow channel is disposed outside the tank module. | ||||||
| 111 | A DRIVE MODULE AND ITS USES, A FLOTATION PLANT AND A METHOD OF CHANGING OF THE DRIVE MODULE | US15571891 | 2015-05-13 | US20180141055A1 | 2018-05-24 | Pekka TAHKIO; Valtteri VAARNA; Matti LUUKKONEN |
| A drive module which is a self-supporting structure being transferable and hoistable as an integral entity. The drive module includes a self-supporting framework having a shape of a rectangular parallelepiped. The self-supporting framework defines an inner space within the self-supporting framework. The drive module also includes at least two drive units. The drive units are supported to the self-supporting framework in the inner space of the self-supporting framework. The drive units are connectable to an external rotatable shaft for the rotation of the rotatable shaft located outside the drive module. | ||||||
| 112 | METHODS AND DEVICES FOR PRODUCING BIOMOLECULES | US14794048 | 2015-07-08 | US20150307911A1 | 2015-10-29 | Jochen URTHALER; Christine ASCHER; Daniel BUCHELI |
| A scalable process and device for producing a bio molecule, in particular pharmaceutical grade plasmid DNA is described. The process includes the steps of alkaline lysis, neutralization and clarification and can be further extended. For separating the lysate and the precipitate an improved floatation method is disclosed. This method is based on attachment of CO2 bubbles on the precipitate floe. The CO2 is released from a carbonate salt during or after neutralization (acidification). The method of the invention is preferably carried out in an automated continuous mode applying devices for lysis and neutralization and a novel device for completely continuous clarification (separation of floes and clarified lysate). | ||||||
| 113 | METHOD FOR SEPARATING SUSPENDED SOLIDS FROM A WASTE FLUID | US13750519 | 2013-01-25 | US20130134078A1 | 2013-05-30 | Joel BIAS; Brian ROSS |
| The disclosure relates to a separation process. An aerated inlet mixture of fluid and solids is fed to a flotation separation vessel and is separated into an upper float layer and a lower clarified layer. The upper float layer is withdrawn from the vessel when the height of the upper float layer exceeds the height of an overflow conduit and forms a concentrated solids effluent The lower clarified layer is withdrawn from the separation vessel as a clarified fluid effluent. The separation process is performed continuously using a control process that maintains a relatively stable distribution between the lower clarified layer and the upper float layer. The control process is a closed loop process that monitors the instantaneous height of the vessel contents and computes an error function based on the instantaneous height and a set-point height. The error function is used to periodically adjust the outlet flowrate of the clarified fluid effluent. The resulting process has improved stability (e.g., being continuously operable without interruption and/or operable for extended periods between intermittent cleaning processes) and provides a concentrated solids effluent with solids concentrations higher than those previously attainable in similar separation processes. | ||||||
| 114 | Injector for flotation cell | US12594036 | 2008-04-03 | US08177071B2 | 2012-05-15 | Erkka Nieminen |
| An injector for a flotation cell, comprising a feed channel for feeding a fiber suspension flow to the flotation cell, a flow distribution element for distributing the fiber suspension flow fed to the injector into partial flows, a mixing apparatus for mixing air with the fiber suspension flow, and at least one air input point for sucking air to be mixed with the fiber suspension flow into the injector. The feed channel, the flow distribution element and the mixing apparatus are in the injector arranged with respect to one another such that a flow direction of the fiber suspension flow in the feed channel is substantially opposite to a flow direction of the fiber suspension flow through the flow distribution element and the mixing apparatus. | ||||||
| 115 | Self contained dissolved air flotation system | US12848739 | 2010-08-02 | US07981287B2 | 2011-07-19 | David P. Lambert; James J. Houtz |
| A dissolved air flotation system and method for purifying fresh water. The system is self-contained within a standard shipping container, with all components disposed in-line within the shipping container. Float is removed from the flotation tank with a skimmer that drives float downstream onto a conveyor belt, and the conveyor belt conveys float away from the flotation tank, in the downstream direction, and deposits the float in a collection tank. Clean water may be drawn from the flotation tank continuously, while float may be removed periodically. | ||||||
| 116 | Hydrocyclone and associated methods | US11940099 | 2007-11-14 | US07708146B2 | 2010-05-04 | Jan Kruyer |
| A hydrocyclone can be used for separating components of a fluid. The hydrocyclone can include a substantially open cylindrical vessel and a helical confined path connected upstream of the cylindrical vessel. The open vessel can include an open vessel inlet configured to introduce a fluid tangentially into the open vessel. The helical confined path can be connected to the open vessel at the open vessel inlet. One or more wash inlets can be used to introduce a wash fluid into the helical confined path and/or the open vessel. An overflow outlet and underflow outlet can be operatively attached to the open vessel for removal of the separated fluid components. Although a number of fluids can be effectively treated, de-sanding of bitumen slurries from oil sands can be readily achieved. | ||||||
| 117 | Fluid treatment system and method | US10965713 | 2004-10-18 | US07632399B2 | 2009-12-15 | Carl F. Geppert; Theodore R. Geppert; Robert A. Rhoades |
| A fluid treatment system, includes a pressurizable tank, a compressed air source, and a float disposed inside the tank, the float rising or falling in response to a level of fluid in the tank; and a float-actuated switch assembly connected to the float. The float-actuated switch assembly starts introduction of compressed air into the tank from the compressed air source. A purge valve may be provided to allow fluid to flow out of the tank during the introduction of compressed air into the tank. The float-actuated switch assembly may include a magnetic switch. | ||||||
| 118 | Self contained dissolved air flotation system | US11411223 | 2006-04-24 | US20070000840A1 | 2007-01-04 | David Lambert; James Houtz |
| A dissolved air flotation system and method for purifying fresh water. The system is self-contained within a standard shipping container, with all components disposed in-line within the shipping container. Float is removed from the flotation tank with a skimmer that drives float downstream onto a conveyor belt, and the conveyor belt conveys float away from the flotation tank, in the downstream direction, and deposits the float in a collection tank. Clean water may be drawn from the flotation tank continuously, while float may be removed periodically. | ||||||
| 119 | Fluid treatment system and method | US10965713 | 2004-10-18 | US20060081519A1 | 2006-04-20 | Carl Geppert; Theodore Geppert; Robert Rhoades |
| A fluid treatment system, includes a pressurizable tank, a compressed air source, and a float disposed inside the tank, the float rising or falling in response to a level of fluid in the tank; and a float-actuated switch assembly connected to the float. The float-actuated switch assembly starts introduction of compressed air into the tank from the compressed air source. A purge valve may be provided to allow fluid to flow out of the tank during the introduction of compressed air into the tank. The float-actuated switch assembly may include a magnetic switch. | ||||||
| 120 | Pulsating reactors | US10712603 | 2003-11-12 | US20050098497A1 | 2005-05-12 | Boris Khudenko |
| This is a method and apparatus for treatment of liquid media making use of at least one float positioned at the top of the liquid and at least one gas diffuser placed under the float and connected to this float by at least one brace, the diffuser is connected to a gas source by at least one flexible conduit. The gas emitted from the diffuser produces a mixture with liquid having density lower than the liquid and the float partially sinks in the liquid thus increasing the submergence of the diffuser and lowering the gas flow through the diffuser. At increased submergence, the gas flow is reduced, the mixture density increases, and the float rises. A repeatable motion up and down of the float-diffuser is established producing pulsations in the liquid. The method and apparatus can be used in a multitude of chemical, pharmaceutical, petrochemical, environmental and other industries for carrying out mass transfer, chemical and biological transformations, phase separations, thickening of suspensions, mixing, suspending of particles, washing, coagulation-flocculation, membrane filtration, filtration across particulate media, filtration across floating media, mass transfer across membrane, and other processes. | ||||||
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