US3928186A - Combined pulp cleaning system including high and low pressure drop hydrocyclone cleaners - Google Patents

Combined pulp cleaning system including high and low pressure drop hydrocyclone cleaners Download PDF

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Publication number
US3928186A
US3928186A US382068A US38206873A US3928186A US 3928186 A US3928186 A US 3928186A US 382068 A US382068 A US 382068A US 38206873 A US38206873 A US 38206873A US 3928186 A US3928186 A US 3928186A
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United States
Prior art keywords
chamber
pressure
suspension
outlet
particles
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Expired - Lifetime
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US382068A
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English (en)
Inventor
Rudolf Zemanek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Officemax Inc
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Boise Cascade Corp
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Filing date
Publication date
Priority to US382068A priority Critical patent/US3928186A/en
Application filed by Boise Cascade Corp filed Critical Boise Cascade Corp
Priority to DE19742435416 priority patent/DE2435416C3/de
Priority to SE7409573A priority patent/SE403634B/xx
Priority to FI2239/74A priority patent/FI223974A7/fi
Priority to BR6050/74A priority patent/BR7406050D0/pt
Priority to CA205,549A priority patent/CA1021723A/en
Priority to FR7425699A priority patent/FR2238534B1/fr
Priority to JP8502274A priority patent/JPS5431230B2/ja
Priority to GB32726/74A priority patent/GB1482113A/en
Application granted granted Critical
Publication of US3928186A publication Critical patent/US3928186A/en
Priority to SE7703200A priority patent/SE423729B/xx
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C9/00—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/08—Vortex chamber constructions
    • B04C5/081—Shapes or dimensions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/14—Construction of the underflow ducting; Apex constructions; Discharge arrangements ; discharge through sidewall provided with a few slits or perforations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04C—APPARATUS USING FREE VORTEX FLOW, e.g. CYCLONES
    • B04C5/00—Apparatus in which the axial direction of the vortex is reversed
    • B04C5/24—Multiple arrangement thereof
    • B04C5/30—Recirculation constructions in or with cyclones which accomplish a partial recirculation of the medium, e.g. by means of conduits
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21D—TREATMENT OF THE MATERIALS BEFORE PASSING TO THE PAPER-MAKING MACHINE
    • D21D5/00—Purification of the pulp suspension by mechanical means; Apparatus therefor
    • D21D5/18—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force

Definitions

  • the invention also includes a [56] References Cited method and apparatus for separating the cellulose UNITED STATES PATENTS pulp fibers from a reclaimed wastepaper suspenslon by a comb1nedh1gh-pressure drop lowpressure drop sep- 2,377,524 6/1945 I Samson et all. 209/211 aration s u b i ad f a high-pressure 3:333:33; 3/132?
  • hydrocyclone apparatus for separating particles of different specific gravities from. a paper pulpsuspension are'well known in the art. More particularly, these knownhydrocyclone separators are suitable for separating-from a suspension impurity particles having a specifiogravity that is greater than that of the cellulosepulp.
  • separating screens which are efficient inremoving only the large and spherical-plastic particles, since the smaller and flat particles pass readily through the screen openings (holesor slots);. .
  • the conventional hydrocyclone is incapable of removingsynthetic plastic material, or materials suchzasink, hot melt or thelike.
  • the present, invention is based on the concept of removing: the-lighter particles from the wastepaper suspension by a lowpressure process.
  • the primary object of the present invention is toprovide a low-pressure wastepapercleaner method and apparatus for separating from a reclaimed wastepaper suspension both the cellulose .pulp fibers and the lighterimpurity particles having a specific gravity less than that of the pulp fibers.
  • the suspension is introduced at relatively low pressure (on the order of 5 psig) tangentially intothe upper end of a low-pressure drop hydrocyclone chamber having an outlet at its lower end through which are discharged the heavier pulp fibers that are thrown centrifugally outwardly and travel downwardly in the chamber in a helical path.
  • the lighter impurity particles are displaced radially inwardly .in the chamber and engage an upwardly convergent" conical diverter that establishes an upward vortex flow centrally within the chamber, whereby the lighter impurity particles may be dispensed via an outletvthat communicates with the upper end of the chamber.
  • a further objectof the present invention is to provide a high-pressure drop low-pressure drop method and apparatus for separating in three fractions from a reclaimed wastepaper suspension the cellulose, pulp fibers, heavy impurity particles having a specific gravity greater than that of the pulp fibers, and light impurity particles'l aying a specific gravity lower than that of the pulp fibers.
  • a high-pressure drop hydrocyclone iscij eeted colinearly in spaced relation below the aforementioned low-pressure drop wastepaper cleaner, an "intermediate housing being rigidly connected, between the high-pressure hydrocyclone cleaner and the'low-pressure dropwastepaper cleaner 10 define .
  • a ni taryrigid separator having separate outlets for' fdis'cliarging the cellulose pulp fibers, the light impurity particles and the heavy impurity particles, 'res'pecti'v'elyff
  • Another'objec tof the present invention is to provide an improved system for'acc'urately separating the pulp fibers and the light and heavy impurity particles from a reclaimed wastepaper cleaner suspension, character- 'ized in that-the'light particle outlet of the high-pressure drop low-pressure dropseparator is connected with a second-stage low-pressure wastepaper cleaner which supplies at its upper outlet the final light particle rejects and returns from its lower outlet to the original suspensionvt
  • the heavy rejects discharged from the lower outlet of the high-pressure drop low-pressure drop separator may be fed to the inlet of a further hydrocyclone separator (such as the two-body separator of theaforementioned Zemanek application Serial No. 117,566) for separation into the final heavy particle rejects and a suspension containing the cellulose pulp fibers that is returned to the original suspension supply tank and/or the heavy particle reject tank associated with the-high-pressure drop low-pressure drop cleaner.
  • a further hydrocyclone separator such as the two-body separator of theaforementioned Zemanek application Serial No. 117,566
  • FIG. 1 is a diagrammatic sectional elevational view of a cylindrical embodiment of the low-pressure drop wastepaper cleaner of the present invention
  • FIG. 2 is a diagrammatic sectional elevational view of a modification of the wastepaper cleaner of FIG. 1 wherein the lowerportion of the housing is conical;
  • FIG. 3 is a diagrammatic sectional elevational view of a high-pressure'drop low-pressure drop separator apparatus that incorporates the operating principles of the wastepaper cleaner of FIG. 1;
  • FIG. 4 is a detailed view of a modification of the apparatus of FIG..3.
  • FIG. 5 is an improved wastepaper cleaning system that includes the wastepaper cleaner of FIG. 1 and the high-pressure drop low-pressure drop separator apparatus of FIG. 3.
  • the wastepaper cleaner is operable to separate from the cellulose pulp fibers of a wastepaper pulp suspension the lighter impurity particles of materials such as synthetic plastics, ink, adhesives, hot melt particles and the like.
  • a cylindrical housing 2 containing a low pressure drop-chamber 4, an inlet 6 for introducing the suspension tangentially into the upper end of the chamber, and first and second outlets 8 and 10 arranged centrally in the bottom and top walls of the chamber, respectively.
  • a diverter means 12 including a tubular bottom portion 12a upon the upper portion of which is supported a conical upwardly convergent portion 12b.
  • the conical portion is supported by the tubular bottom portion at an elevation greater than that of the outlet opening.
  • the cylindrical portion contains a tangential discharge slot 12c for the discharge of material from the chamber 4 into the diverter chamber 12d, and discharge conduit 14 communicates with the lower'end of the diverter chamber.
  • Throttle valve 16connected in the conduit 14 affords means for regulating the back pressure in chambers 12d and 4.
  • Mounted in the second outlet l0v is a baffle 18 the lower end of which extends to a level below that of the inlet 6, thereby to partially isolate the second outlet -10 from the inlet 6.
  • the wastepaper suspension is supplied-at a relatively low pressure (on the order of 5 psig) and a relatively low flow ratetangentially into the upper end of the chamber 4 via inlet 6.
  • a relatively low pressure on the order of 5 psig
  • the heavier cellulose pulp fibers are thrown centrifugally outwardly and travel downwardly in a helical path adjacent the chamber side wall, whereupon at the bottom of the chamber the pulp fiber-liquid carrier suspension flows through the discharge slot 120, and helically downwardly in the diverter chamber 12d and the discharge conduit 14.
  • the lighter impurity particles are displaced inwardly of the chamber 4 and engage the conical diverter surface 12b, whereupon an upwardly directed low-pressure vortex flow of the lighter impurity particles is established in the central portion of the chamber and outwardly therefrom via the second outlet 10.
  • the outlet pressure of discharge conduit 16 is atmosphere, whereby a relatively low-pressure drop of about psig is achieved.
  • the housing 2' includes a cylindrical upper portion 2a and a conical downwardly convergent lower portion 2b, thereby to effect a slightly greater acceleration of the heavier pulp fibers adjacent the bottom portion of the chamber.
  • the structure and operation of this embodiment is otherwise similar to that of FIG. 1, like parts being identified by primed reference numerals.
  • a reclaimed wastepaper suspension containing cellulose pulp fibers and heavy and light impurity particles having specific gravities greater and less than that of therpulp fibers, respectively, is supplied at a relatively high pressure (on the order of -50 psig) to a high-pressure drop downwardly convergent conical hydrocyclone chamber 24 contained within the lower portion 22a of the housing 22.
  • the suspension is introduced tangentially into the hydrocyclone chamber via inlet 26, whereupon the suspension flows downwardly in the chamber toward the first outlet 28. Owing to centrifugal force, the heavier impurity particles assume a downward helical path adjacent the wall surface of the chamber 24 and are discharged via the first outlet 28.
  • the cellulose pulp fibers and the lighter impurity particles are displaced radially upwardly in the chamber 24 and assume an upward vortex flow for discharge via baffle 29 and a second discharge opening 20 contained in the upper end wall of chamber 24.
  • the discharge pressure is approximately 5 psig, whereupon the pressure drop between the inlet and outlets of the hydrocyclone separator is about 25 to 45 psig for inlet pressures of 30 to 50 psig, respectively.
  • the low-pressure suspension of cellulose pulp fibers and lighter impurity particles is introduced into a cylindrical intermediate chamber 34 contained in an intermediate portion 22b of the housing, the side wall portion of said intermediate chamber containing an outlet 36 which communicates via conduit 38 with the inlet 106 of the low-pressure chamber 104 contained in the upper portion 220 of the housing 22.
  • the upper housing portion 220 contains a first outlet 108 that communicates with the bottom portion of the chamber 104, and a second outlet 110 centrally arranged in the upper wall of the chamber.
  • diverter means 112 including a cylindrical lower portion 112a and an upwardly convergent conical portion 112b.
  • Discharge conduit 114 containing throttle valve 116 communicates with the first outlet 108, and arranged in the second outlet is the baffle means 118 having a tubular lower portion 118a that extends downwardly in the chamber 104 at least to the level of the inlet 106, thereby to isolate the second outlet from the inlet.
  • the heavier cellulose pulp fibers are thrown centrifugally outwardly toward the wall of the chamber and pass downwardly in a helical path for discharge via outlet 108.
  • the lighter impurity particles are displaced inwardly and engage the conical diverter portion 112b, whereupon a vortex flow of the lighter impurity particles is established upwardly in the central portion of the chamber 104 toward the outlet 110 for discharge via the opening 120 contained in the upper end wall 118b of the baffle means.
  • the high-pressure drop low-pressure drop apparatus of FIG. 3 is operable by a single unitary construction to separate from the initial reclaimed wastepaper suspension heavy impurity particles at outlet 28, light impurity particles at outlet 120, and acceptable cellulose pulp fibers at outlet 1 14.
  • the back pressure of chamber 104 (and, to a certain extent, the back pressures of chambers 34 and 24) may be controlled by appropriate adjustment of throttle valve 116.
  • the second outlet 120' is arranged in the side wall of the baffle and an air outlet 122 is provided in the upper end wall 118b of the baffle. Consequently, air is readily separated from the suspension adjacent the light particle outlet.
  • the wastepaper cleaner and high-pressure drop lowpressure drop components are particularly suitable for use in the improved wastepaper cleaning system illustrated in FIG. 5.
  • the reclaimed wastepaper suspension- which has a 0.30.7% concentration and includes cellulose pulp fibers, heavy impurity particles having a specific gravity higher than that of the pulp fibers, and light impurity particles having a specific gravity lower than that of the pulp fibers--is introduced in the supply tank and is pumped by pump 152 at a relatively high pressure (30-50 psig) to the inlet 226 of the high-pressure drop chamber 224 contained in the lower portion 222a of the housing 222 of the highpressure drop low-pressure drop separator 222.
  • the heavy impurity particles are deposited into tank 154 via outlet 228 and are pumped by pump 156 to the inlet 158 of the two-body separator apparatus 160 (which apparatus is disclosed in detail in the Zemanek application Ser. No. 117,566).
  • the separator 160 serves as a second-stage device including a first outlet 162 for supplying the final heavy impurity particles, a second outlet 164 for returning to the supply tank 150 a first suspension of a lighter portion of the heavy impurity particles (which possibly includes redeemable cellulose pulp fibers), and a third outlet 166 which returns to the heavy reject tank 154 a second suspension of a heavier portion of the heavy impurity particles (which possibly includes a small quantity of redeemable pulp fibers) third .outlet 166 to the heavy particle reject tank 154.
  • the low-pressure upper wastepaper cleaner portion 2220 of the combined high-pressure drop low-pressure drop separator 222 serves to provide the acceptable cellulose pulp fibers via first outlet 308 and discharge conduit 314, and the light impurity particle rejects are supplied to tank 170 via the second outlet 320. These rejects are pumped by pump 172 at a relatively low pressure (about 5 psig) to the inlet 406 of the low-pressure drop wastepaper cleaner 402, which apparatus serves as a second stage separator for the light impurity particles. Final light particle rejects are supplied via watepaper cleaner outlet 410, and the suspension produced at outlet 408 (which may include some acceptable cellulose pulp fibers) is returned to the supply tank 150.
  • the method of separating from a reclaimed wastepaper suspension the cellulose pulp fibers and heavy and light particles of impurities having specific gravities greater and less, respectively, than that of the pulp fibers which comprises the steps of I a. supplying the suspension tangentially at a pressure of about 30-50 psig. into the upper end of a highpressure centrifugal hydrocyclone separator chamber;
  • Low-pressure drop apparatus for separating from a liquid suspension cellulose pulp fibers and particles of impurities having a specific gravity less than that of the cellulose pulp fibers, comprising a. means for supplying said suspension under pressure;
  • a housing having top, bottom and side walls defining a vertical hydrocyclone chamber, said housing being cylindrical and having a uniform diameter throughout its length
  • upwardly convergent conical diverter means centrally mounted on the bottom wall of said vertical hydrocyclone chamber, said diverter means including an upwardly convergent conical diverter member, and cylindrical support means supporting said conical diverter member a given distance above said housing bottom wall and above said first outlet opening, said cylindrical support means having an outer diameter which correponds with the maximum diameter of said conical diverter member;
  • tubular baffle means connected with the central portion of the housing top wall and communicating at its upper end with the second outlet opening, the lower end of said baffle means extending downwardly in said chamber to a level slightly below that of said inlet opening;
  • the pressure of said suspension supply means being such as to establish a pressure difference of about 5 psig. between said inlet opening and said firstoutlet opening, whereby the pulp fibers are separated from the suspension by centrifugal force and pass downwardly in the chamber in an outer helical path adjacent the side wall surface of the chamber for discharge via said first outlet, said diverter means establishing in the central portion of the chamber within the outer helical path an upwardly directed small helical vortex flow of the impurity particles of the suspension for discharge via said second outlet opening.
  • Combined high-pressure-drop low-presure-drop apparatus for separating from a liquid suspension cellulose pulp fibers, and first and second groups of impurities having specific gravities greater than and less than that of said pulp fibers, respectively, comprising a. means for supplying said suspension under pressure; 7
  • a unitary housing including a lower portion containing a vertically arranged downwardly convergent conical high-pressure-drop hydrocyclone separation chamber, an upper portion containing a vertically arranged generally cylindrical low-pressure-drop separation chamber, and a middle portion containing an intermediate chamber,
  • the method of separating from a suspension cellulose pulp fibers, and particles of impurities having a specific gravity lower than that of the pulp fibers which comprises the steps of a. introducing the suspension tangentially into an inlet opening arranged at the upper end of a totally cylindrical hydrocyclone chamber, said chamber having at its lower end a pulp fiber outlet opening and at its upper end a light impurity particle outlet opening, said suspension being introduced into said chamber at a pressure producing a pressure drop of about 5 psig. whereby the heavier pulp fiber particles are centrifugally displaced outwardly and flow downwardly in a helical path toward the bottom of l the hydrocyclone chamber and wherein the lighter particles are displaced radially inwardly and downwardly in the chamber;

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US382068A 1973-07-24 1973-07-24 Combined pulp cleaning system including high and low pressure drop hydrocyclone cleaners Expired - Lifetime US3928186A (en)

Priority Applications (10)

Application Number Priority Date Filing Date Title
US382068A US3928186A (en) 1973-07-24 1973-07-24 Combined pulp cleaning system including high and low pressure drop hydrocyclone cleaners
SE7409573A SE403634B (sv) 1973-07-24 1974-07-23 Sett och anordning for att fran en suspension av cellulosamassafibrer separera cellulosamassafibrerna och partiklar av fororeningar med legre densitet en massafibrerna
FI2239/74A FI223974A7 (enrdf_load_stackoverflow) 1973-07-24 1974-07-23
BR6050/74A BR7406050D0 (pt) 1973-07-24 1974-07-23 Aparelho e processo aperfeicoados para separar de uma primeira suspensao de liquido pelo menos duas particulas com diferentes pesos especificos
DE19742435416 DE2435416C3 (de) 1973-07-24 1974-07-23 Niederdruck-Hydrozyklon zur Wiedergewinnung der Fasern aus Altpapiersuspensionen
CA205,549A CA1021723A (en) 1973-07-24 1974-07-24 Combined pulp cleaning system including high and low pressure drop hydrocyclone cleaners
FR7425699A FR2238534B1 (enrdf_load_stackoverflow) 1973-07-24 1974-07-24
JP8502274A JPS5431230B2 (enrdf_load_stackoverflow) 1973-07-24 1974-07-24
GB32726/74A GB1482113A (en) 1973-07-24 1974-07-24 Method and apparatus for separating particles of different specific gravities carried in a liquid suspension
SE7703200A SE423729B (sv) 1973-07-24 1977-03-21 Sett och anordning for rening av en pappersmssasuspension

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US382068A US3928186A (en) 1973-07-24 1973-07-24 Combined pulp cleaning system including high and low pressure drop hydrocyclone cleaners

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US (1) US3928186A (enrdf_load_stackoverflow)
JP (1) JPS5431230B2 (enrdf_load_stackoverflow)
BR (1) BR7406050D0 (enrdf_load_stackoverflow)
CA (1) CA1021723A (enrdf_load_stackoverflow)
FI (1) FI223974A7 (enrdf_load_stackoverflow)
FR (1) FR2238534B1 (enrdf_load_stackoverflow)
GB (1) GB1482113A (enrdf_load_stackoverflow)
SE (2) SE403634B (enrdf_load_stackoverflow)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4017033A (en) * 1975-03-29 1977-04-12 J. M. Voith Gmbh Apparatus and method for reclaiming waste papers
US4305825A (en) * 1980-08-20 1981-12-15 Laval Claude C Reaction member for a fluid separating device
US4351804A (en) * 1978-11-06 1982-09-28 Research-Cottrell, Inc. Sulfur dioxide scrubber with hydroclone separator
US4617114A (en) * 1984-03-07 1986-10-14 Skardal Karl A Vortex cleaner for cleaning and deaerating paper pulp suspensions
US4773989A (en) * 1985-12-06 1988-09-27 J M. Voith, Gmbh Process for the preparation of fibrous suspensions in hydrocyclones
US4797203A (en) * 1986-02-22 1989-01-10 Elp Products Limited Reverse hydrocyclone cleaner for removing light contaminants from pulp slurry
RU2229346C1 (ru) * 2003-05-23 2004-05-27 Снаговский Виктор Алексеевич Устройство для очистки воздуха
US20060163153A1 (en) * 2002-05-27 2006-07-27 Caldelman Sven L Hydrocyclone
US20060243646A1 (en) * 2005-04-29 2006-11-02 Valentina Kucher Separation of fibre pulp suspensions containing relatively heavy contaminants
US20100264088A1 (en) * 2009-04-20 2010-10-21 Sorbwater Technology As Apparatus and method for separation of phases in a multiphase flow
US20120097616A1 (en) * 2009-07-03 2012-04-26 Jan Backman Hydrocyclone, system and method for cleaning cellulose suspensions
CN102641791A (zh) * 2011-12-05 2012-08-22 中国石油大学(北京) 一种高浓度液固水力旋流器
CN108525870A (zh) * 2018-04-13 2018-09-14 黄石山力科技股份有限公司 防返混系统
CN108951259A (zh) * 2018-09-04 2018-12-07 马丽芬 一种新型轻杂质除渣装置
US20190022585A1 (en) * 2017-07-20 2019-01-24 Brett Evan Patrick Process and apparatus to remove carbon-14 from carbon-dioxide in atmospheric gases and agricultural products grown in controlled environments
US10376924B2 (en) * 2017-02-23 2019-08-13 Frito-Lay North America, Inc. Separation apparatus with screen having fixed, non-uniform openings
EP3524357A1 (de) 2018-02-08 2019-08-14 MCI Management Center Innsbruck - Internationale Hochschule GmbH Abscheidevorrichtung
US20220064544A1 (en) * 2019-02-15 2022-03-03 Exxonmobil Chemical Patents Inc. Coke and Tar Removal from a Furnace Effluent

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2478489B1 (fr) * 1980-03-21 1985-08-30 Centre Tech Ind Papier Procede et dispositif pour la separation de particules dans un fluide, notamment pour l'epuration de suspensions papetieres
SE8802580L (sv) * 1988-07-08 1990-01-09 Wikdahl Nils Anders Lennart Saett och anordning foer att befria en fibersuspension fraan laetta foeroreningar
CN111672641B (zh) * 2020-06-10 2021-10-12 舟山市海大科学技术研究院有限责任公司 一种内置网筒式油污水分离旋流器

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2377524A (en) * 1939-11-21 1945-06-05 Hammermill Paper Co Method of and means for separating solid particles in pulp suspensions and the like
US2735547A (en) * 1956-02-21 vissac
US2799208A (en) * 1955-04-29 1957-07-16 Scott Harold Eric Baliol Vortex type separators
US2843265A (en) * 1956-07-17 1958-07-15 Rakowsky Victor Method of density separation
US2849930A (en) * 1952-09-24 1958-09-02 Nichols Engineering And Res Co Method and apparatus for treating pulp suspensions and other fluids for removal of undesired particles and gases
US3052361A (en) * 1960-12-06 1962-09-04 Marvin E Whatley Liquid cyclone contactor
US3425545A (en) * 1963-08-02 1969-02-04 Rudolf Zemanek Method and apparatus for separating fibrous suspensions
US3428175A (en) * 1965-06-14 1969-02-18 Outokumpu Oy Process and apparatus for froth flotation
US3486619A (en) * 1968-01-24 1969-12-30 Wikdahl Nils Anders Lennart Method of removing impurities from a fiber suspension
US3543932A (en) * 1967-12-29 1970-12-01 Nichols Eng & Res Corp Vortex chamber reject control
US3696934A (en) * 1967-09-02 1972-10-10 Saburo Oisi Apparatus for centrifugally separating impurities from fluid suspensions
US3747757A (en) * 1969-05-03 1973-07-24 Altenbergs Fur Bergbau Und Zin Method and machine for flotation of minerals or the like
US3759385A (en) * 1969-06-18 1973-09-18 Cribla Sa Method and apparatus for separating mixtures of fine grain materials
US3764005A (en) * 1971-02-22 1973-10-09 Boise Cascade Corp Hydrocyclone pulp cleaner

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735547A (en) * 1956-02-21 vissac
US2377524A (en) * 1939-11-21 1945-06-05 Hammermill Paper Co Method of and means for separating solid particles in pulp suspensions and the like
US2849930A (en) * 1952-09-24 1958-09-02 Nichols Engineering And Res Co Method and apparatus for treating pulp suspensions and other fluids for removal of undesired particles and gases
US2799208A (en) * 1955-04-29 1957-07-16 Scott Harold Eric Baliol Vortex type separators
US2843265A (en) * 1956-07-17 1958-07-15 Rakowsky Victor Method of density separation
US3052361A (en) * 1960-12-06 1962-09-04 Marvin E Whatley Liquid cyclone contactor
US3425545A (en) * 1963-08-02 1969-02-04 Rudolf Zemanek Method and apparatus for separating fibrous suspensions
US3428175A (en) * 1965-06-14 1969-02-18 Outokumpu Oy Process and apparatus for froth flotation
US3696934A (en) * 1967-09-02 1972-10-10 Saburo Oisi Apparatus for centrifugally separating impurities from fluid suspensions
US3543932A (en) * 1967-12-29 1970-12-01 Nichols Eng & Res Corp Vortex chamber reject control
US3486619A (en) * 1968-01-24 1969-12-30 Wikdahl Nils Anders Lennart Method of removing impurities from a fiber suspension
US3747757A (en) * 1969-05-03 1973-07-24 Altenbergs Fur Bergbau Und Zin Method and machine for flotation of minerals or the like
US3759385A (en) * 1969-06-18 1973-09-18 Cribla Sa Method and apparatus for separating mixtures of fine grain materials
US3764005A (en) * 1971-02-22 1973-10-09 Boise Cascade Corp Hydrocyclone pulp cleaner

Cited By (30)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4017033A (en) * 1975-03-29 1977-04-12 J. M. Voith Gmbh Apparatus and method for reclaiming waste papers
US4351804A (en) * 1978-11-06 1982-09-28 Research-Cottrell, Inc. Sulfur dioxide scrubber with hydroclone separator
US4305825A (en) * 1980-08-20 1981-12-15 Laval Claude C Reaction member for a fluid separating device
US4617114A (en) * 1984-03-07 1986-10-14 Skardal Karl A Vortex cleaner for cleaning and deaerating paper pulp suspensions
US4773989A (en) * 1985-12-06 1988-09-27 J M. Voith, Gmbh Process for the preparation of fibrous suspensions in hydrocyclones
US4797203A (en) * 1986-02-22 1989-01-10 Elp Products Limited Reverse hydrocyclone cleaner for removing light contaminants from pulp slurry
US20060163153A1 (en) * 2002-05-27 2006-07-27 Caldelman Sven L Hydrocyclone
RU2229346C1 (ru) * 2003-05-23 2004-05-27 Снаговский Виктор Алексеевич Устройство для очистки воздуха
KR101296466B1 (ko) * 2005-04-29 2013-08-20 지엘브이 피난스 헝가리 케이에프티, 룩셈부르크 브랜치 비교적 중질의 오염 물질을 포함하는 섬유 펄프 현탁액을 분리하는 하이드로사이클론 유닛 및 방법
US7404492B2 (en) * 2005-04-29 2008-07-29 Glv Finance Hungary Kft Separation of fibre pulp suspensions containing relatively heavy contaminants
WO2006118512A1 (en) * 2005-04-29 2006-11-09 Gl & V Management Hungary Kft Hydrocyclone unit and method for separating a fibre pulp suspension containing relatively heavy contaminants
US20060243646A1 (en) * 2005-04-29 2006-11-02 Valentina Kucher Separation of fibre pulp suspensions containing relatively heavy contaminants
US8950589B2 (en) 2009-04-20 2015-02-10 Sorbwater Technology As Apparatus and method for separation of phases in a multiphase flow
US20100264088A1 (en) * 2009-04-20 2010-10-21 Sorbwater Technology As Apparatus and method for separation of phases in a multiphase flow
US8951422B2 (en) * 2009-04-20 2015-02-10 Sorbwater Technology As Apparatus and method for separation of phases in a multiphase flow
US9238888B2 (en) * 2009-07-03 2016-01-19 GL&V Luxembourg S.à r.l. Method for cleaning cellulose suspensions
US20150259853A1 (en) * 2009-07-03 2015-09-17 Jan Backman Method for cleaning cellulose suspensions
US20120097616A1 (en) * 2009-07-03 2012-04-26 Jan Backman Hydrocyclone, system and method for cleaning cellulose suspensions
CN102641791B (zh) * 2011-12-05 2014-05-14 中国石油大学(北京) 一种高浓度液固水力旋流器
CN102641791A (zh) * 2011-12-05 2012-08-22 中国石油大学(北京) 一种高浓度液固水力旋流器
US10376924B2 (en) * 2017-02-23 2019-08-13 Frito-Lay North America, Inc. Separation apparatus with screen having fixed, non-uniform openings
US20190022585A1 (en) * 2017-07-20 2019-01-24 Brett Evan Patrick Process and apparatus to remove carbon-14 from carbon-dioxide in atmospheric gases and agricultural products grown in controlled environments
US10905998B2 (en) * 2017-07-20 2021-02-02 Brett Evan Patrick Process and apparatus to remove carbon-14 from carbon-dioxide in atmospheric gases and agricultural products grown in controlled environments
US11192067B2 (en) 2017-07-20 2021-12-07 Brett Evan Patrick Process and apparatus to remove carbon-14 from carbon-dioxide in atmospheric gases and agricultural products grown in controlled environments
US11554345B2 (en) 2017-07-20 2023-01-17 Brett Patrick Process and apparatus to remove carbon-14 from carbon-dioxide in atmospheric gases and agricultural products grown in controlled environments
EP3524357A1 (de) 2018-02-08 2019-08-14 MCI Management Center Innsbruck - Internationale Hochschule GmbH Abscheidevorrichtung
CN108525870A (zh) * 2018-04-13 2018-09-14 黄石山力科技股份有限公司 防返混系统
CN108951259A (zh) * 2018-09-04 2018-12-07 马丽芬 一种新型轻杂质除渣装置
US20220064544A1 (en) * 2019-02-15 2022-03-03 Exxonmobil Chemical Patents Inc. Coke and Tar Removal from a Furnace Effluent
US11932816B2 (en) * 2019-02-15 2024-03-19 Exxonmobil Chemical Patents Inc. Coke and tar removal from a furnace effluent

Also Published As

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SE7703200L (sv) 1977-03-21
JPS5070962A (enrdf_load_stackoverflow) 1975-06-12
GB1482113A (en) 1977-08-03
FR2238534A1 (enrdf_load_stackoverflow) 1975-02-21
FR2238534B1 (enrdf_load_stackoverflow) 1978-03-24
SE423729B (sv) 1982-05-24
CA1021723A (en) 1977-11-29
SE7409573L (enrdf_load_stackoverflow) 1975-01-27
JPS5431230B2 (enrdf_load_stackoverflow) 1979-10-05
DE2435416B2 (de) 1977-04-07
FI223974A7 (enrdf_load_stackoverflow) 1975-01-25
DE2435416A1 (de) 1975-02-27
SE403634B (sv) 1978-08-28
BR7406050D0 (pt) 1975-05-13

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