EP0694340A1 - Konzentrator für feine oder gebrochene Teilchen - Google Patents

Konzentrator für feine oder gebrochene Teilchen Download PDF

Info

Publication number
EP0694340A1
EP0694340A1 EP95401755A EP95401755A EP0694340A1 EP 0694340 A1 EP0694340 A1 EP 0694340A1 EP 95401755 A EP95401755 A EP 95401755A EP 95401755 A EP95401755 A EP 95401755A EP 0694340 A1 EP0694340 A1 EP 0694340A1
Authority
EP
European Patent Office
Prior art keywords
particles
funnel
deflector
fine
broken
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP95401755A
Other languages
English (en)
French (fr)
Inventor
Jean-Paul Euzen
Jean De Bonneville
Daniel Vuillemot
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.)
IFP Energies Nouvelles IFPEN
Original Assignee
IFP Energies Nouvelles IFPEN
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by IFP Energies Nouvelles IFPEN filed Critical IFP Energies Nouvelles IFPEN
Publication of EP0694340A1 publication Critical patent/EP0694340A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
    • B07B4/02—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B13/00—Grading or sorting solid materials by dry methods, not otherwise provided for; Sorting articles otherwise than by indirectly controlled devices
    • B07B13/003—Separation of articles by differences in their geometrical form or by difference in their physical properties, e.g. elasticity, compressibility, hardness
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/06—Cone or disc shaped screens

Definitions

  • the present invention relates to a concentrator device for fine or broken particles, usable in particular in installations comprising catalytic reactors with moving bed, and in particular in catalytic reforming installations.
  • fine or broken particles is a nuisance in all reactors but in particular in moving bed reactors because they cause several types of drawbacks.
  • these particles cause a change in the porosity of the medium which disturbs the regularity of the gas flow and therefore directly affects the performance of the unit.
  • the presence of fine particles modifies the flow conditions of solid particles within the moving bed itself, in particular in the case of annular beds (delimited by concentric grids) in contact with the grid of the central collector. since, entrained by the fluids, fine or broken particles are pushed towards the grid of the central collector where they can become blocked.
  • the present invention provides a concentrator device which aims to separate a flow of particles having a concentration C0 of fine or broken particles (according to needs, particles with a smaller average diameter will be defined at a determined threshold, either absolute or relative to the average diameter of the particles) in at least two flows.
  • At least one of the fluxes obtained (called flux of reduced concentration in fine or broken particles) will have a concentration C1 in fine particles substantially lower than C0, while the other (the others) flux (called flux concentrated in fine particles or conversely) will have, conversely, a concentration C2 substantially higher than the concentration C0 of the initial flow.
  • the device which is the subject of the invention is, in FIG. 1, placed in a cylindrical enclosure 1 with a conical bottom (which could be just as well hemispherical or elliptical) and comprising an external wall.
  • An introduction means 2 brings the flow of particles to be treated to the level of the first separator stage; under the effect of gravity. Most of this flow consists of quasi-spherical particles, that is to say particles which can roll, and of variable sizes. Without these dimensions being able to limit the invention, examples of reforming catalysts 1.5 to 2.8 mm in diameter will be given.
  • the particle flow flows by gravity through the device.
  • the first separator stage comprises a funnel 3 and a deflector 4 connected to the funnel.
  • Figure 1 therefore comprises 2 separator stages in series.
  • the means of introduction of the particles for the second separator is the orifice 5 of the first separator which preferably comprises a tube.
  • the funnel 3, the deflector 4 and the introduction means have substantially the same axis, which is vertical or inclined, and preferably substantially vertical, to allow gravity flow.
  • the purpose of the funnel is to collect a portion of the particles coming from the upper introduction means, before redistributing them through a reduced size orifice placed substantially vertically from the first introduction point.
  • the funnel flares up. Its upper diameter is preferably a fraction, approximately between 1/4 and 2/3, of the diameter of the container and the upper part is placed so as to intercept a large fraction, between 1/3 and 3/4, of the slope of solid particles while leaving a free annular space for the flow of the rest of the particles.
  • the outer edge 7 of the funnel must be located at a distance H from the lower end of the means of introduction (tubing 2 or 5) of the particles. This distance is of the order of a few centimeters. The point of the slope may therefore be free or not, depending on the value of this distance.
  • the section of the outlet orifice 5 of the funnel (therefore located on the axis of the funnel) is preferably close to the section of the means for introducing the particles, it can also be smaller.
  • the angle of inclination ⁇ of the funnel (or that of the planar facets) relative to the horizontal is greater than the angle of sliding of the particles on the surface of the deflector so as to allow a regular flow of the particles which s 'press on this edge of the funnel. It is usually at least 5-10 degrees higher than the slip angle.
  • the base of the truncated cone, or prism, forming the funnel can possibly be extended by a short tube 6.
  • the purpose of the deflector is to push the largest and roundest particles towards the wall and the periphery. It is frustoconical or prismatic, with a flaring downwards. At the upper part its diameter is connected to the diameter of the upper part of the funnel, so that the line of intersection is circular if the funnel and the deflector are real trunks of cones (conical shape), but a line broken if the funnel and / or the deflector are prismatic. The deflector and the funnel are thus connected.
  • the deflector leaves a space L for passage of particles sufficient to avoid the effects of arch or blockage against the external wall of the enclosure 1, therefore a space of at least 10 times the diameter of the particles the largest, and preferably at least 20 times, but not too weak so that the slope, which collapses towards the center from this crossed deflector edge, cannot reach the outer edge of the immediately lower funnel.
  • the inclination of this deflector relative to the horizontal is at least 5 to 10 degrees greater than the angle of sliding of the particles on the surface of the deflector so as to allow a regular flow of the particles which are supported on this deflector.
  • the operator will define the angle ⁇ , the quantity L (distance between the lower end of the deflector and the wall) and h (vertical distance between the upper edge of the funnel and the upper surface slope) or H (vertical distance between the upper edge of the funnel and the introduction means).
  • the principle of the proposed device is therefore to exploit this effect by regularly bringing back towards the center part of the slope formed in line with the supply orifices.
  • This process can be repeated one or more times by superimposing several separator stages which each have the objective of separating a stream of particles in two, a stream of particles enriched in fine or broken particles which are refocused while a second stream less rich in fine and broken is pushed outward.
  • the funnel, immediately below associated with a deflector
  • the intersection (M in FIG. 1) between the slope created at this funnel and the free particles flowing from the upper deflector, this intersection is located outside the upper section of said funnel.
  • the surface of the deflector may, as indicated above, be of frustoconical or prismatic shape, its surface may be smooth or in the form of a grid or a plate provided with slots or perforations, so as to allow the passage of the finest particles while promoting the sliding of medium or large particles towards the periphery. If this wall is not full (as shown in FIG. 1), it is advantageously proposed to place under the grid or the perforated plate a small full plate which makes it possible to collect and refocus the fine particles which have passed through. through the gate. It is quite obvious that this small plate, or flange 8 of refocusing for example, of frustoconical shape should not however obstruct the flow of the slope which descends from the preceding central orifice 5. Obviously, this plate is directed towards the lower part of the device and towards the axis of the associated funnel.
  • Each of the withdrawal rates can of course be adjusted independently by means of a suitable device, such as for example a mechanical or pneumatic valve.
  • a suitable device such as for example a mechanical or pneumatic valve.
  • We can also advantageously provide for the distances L and the diameters of the pipes 12 and 10 so that the particles can flow freely without being sorted. In this case, we would do the sorting discontinuously.
  • the withdrawal of the stream concentrated in fine or broken particles is obtained by means 9, arranged substantially along the axis of the last funnel, it being understood that this is the funnel immediately above by means of racking.
  • This means 9 comprises according to Figure 1 a tube 10 advantageously connected to a funnel 11 collecting the concentrated flow over an area around the axis of the last funnel. Any other means having the function of collecting and discharging the concentrated flow is suitable.
  • the flow of particles remaining, containing all the other particles not discharged by means 9, is recovered, advantageously in FIG. 1 by the preferably conical or elliptical bottom of enclosure 1 and discharged by means 12. Any other means of recovering the remaining flow is suitable, in particular the means usually placed for this purpose at the base of moving bed reactors or silos.
  • the funnels and deflectors can be scalloped, in particular if they are composed of plane facets, and therefore have a non-planar connection line to allow greater variation in the flow rates of solids without compromising the principle of operation of the device.
  • the substantially revolution device described above instead of the substantially revolution device described above, if geometrical or space constraints encourage it, generally semi-circular or even planar devices can also be used with profit, as long as they respect the basic principle. offers.
  • the complete device corresponds to a fraction of the device described above; the description and diagram given in Figures 1 and 2 to represent the section of the proposed device remains perfectly valid, except that the word funnel no longer represents a half or a quarter of frustoconical funnel, or even a flat surface if the device is no longer of revolution, and that in the same way, the deflector is no longer of revolution, but semi circular or planar.
  • separator devices can coexist "in parallel" on the same plane in the same enclosure with a means of supplying particles to be treated for each of the first separator stages.
  • the advantage of the device according to the invention is that all the streams of particles are re-sorted and in particular the stream of finer particles from the first separator stage is re-sorted by each of the following stages, so that at the end of at least minus 2 separator stages, and preferably more than 2, the concentration of fine or broken particles is reduced significantly.
  • This objective is achieved by means of the device according to the invention thanks to the dynamic slope effect used, that is to say that all the particles are always in motion to form the slope and to flow, the slope does not is never blocked (otherwise the catalyst particles would stick). This effect also allows the speaker to be emptied completely at the desired time, and without mixing the flows.

Landscapes

  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)
  • Combined Means For Separation Of Solids (AREA)
EP95401755A 1994-07-29 1995-07-25 Konzentrator für feine oder gebrochene Teilchen Withdrawn EP0694340A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9409558 1994-07-29
FR9409558A FR2723008B1 (fr) 1994-07-29 1994-07-29 Dispositif concentrateur en particules fines ou cassees

Publications (1)

Publication Number Publication Date
EP0694340A1 true EP0694340A1 (de) 1996-01-31

Family

ID=9465980

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95401755A Withdrawn EP0694340A1 (de) 1994-07-29 1995-07-25 Konzentrator für feine oder gebrochene Teilchen

Country Status (7)

Country Link
US (1) US5772044A (de)
EP (1) EP0694340A1 (de)
JP (1) JPH0857428A (de)
KR (1) KR960003822A (de)
CN (1) CN1128683A (de)
FR (1) FR2723008B1 (de)
TW (1) TW269646B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998050172A1 (en) * 1997-05-08 1998-11-12 Alexei Nikiforovich Zjulin Separator for granular materials
CN102962192A (zh) * 2012-12-08 2013-03-13 张家港市金腾化工机械制造有限公司 化工用物料筛选机

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7819347B2 (en) * 2006-06-08 2010-10-26 Restaurant Technology, Inc. Metered material dispenser
US8022756B2 (en) 2007-05-15 2011-09-20 Qualcomm, Incorporated Output circuits with class D amplifier
BRPI0818584B1 (pt) * 2007-10-17 2019-05-28 Basf Se Uso de um composto catalisador latente, composição polimerizável, processo para polimerização de compostos, uso da composição polimerizável, substrato revestido, composição polimerizada ou reticulada, e, composto catalisador latente
KR101271623B1 (ko) * 2010-11-19 2013-06-11 삼성중공업 주식회사 분리 장치
US8827185B2 (en) 2011-10-14 2014-09-09 Restaurant Technology, Inc. Measuring dispenser for granular seasoning material and method of seasoning
RU167396U1 (ru) * 2016-09-08 2017-01-10 Олег Владимирович Левин Станция для разделения катализатора на фракции
CN108686956B (zh) * 2018-05-16 2024-05-03 华东理工大学 一种粉体颗粒分选装置及分选方法
CN111203383A (zh) * 2020-01-08 2020-05-29 安徽中科光电色选机械有限公司 一种轻飘物重力分选机
RU208708U1 (ru) * 2021-06-05 2022-01-10 Общество с ограниченной ответственностью "Тайпс Сортинг" Многофункциональный калибратор для гетерогенных смесей

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4231861A (en) * 1979-03-26 1980-11-04 Parsons Manufacturing, Incorporated Grain cleaning apparatus
EP0482683A1 (de) * 1990-10-23 1992-04-29 METALLGESELLSCHAFT Aktiengesellschaft Verfahren und Vorrichtung zum Trennen eines Schüttgutstromes in Fraktionen mit unterschiedlicher Korngrösse
US5123542A (en) * 1991-06-03 1992-06-23 Hoppe Gerald W Method and apparatus for cleaning, distributing and aerating grain

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1335326A1 (ru) * 1985-11-24 1987-09-07 Украинский научно-исследовательский и проектно-конструкторский институт по обогащению и брикетированию углей Грохот
US4738774A (en) * 1986-10-10 1988-04-19 Patrick Charles W Spout line buster

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4231861A (en) * 1979-03-26 1980-11-04 Parsons Manufacturing, Incorporated Grain cleaning apparatus
EP0482683A1 (de) * 1990-10-23 1992-04-29 METALLGESELLSCHAFT Aktiengesellschaft Verfahren und Vorrichtung zum Trennen eines Schüttgutstromes in Fraktionen mit unterschiedlicher Korngrösse
US5123542A (en) * 1991-06-03 1992-06-23 Hoppe Gerald W Method and apparatus for cleaning, distributing and aerating grain

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998050172A1 (en) * 1997-05-08 1998-11-12 Alexei Nikiforovich Zjulin Separator for granular materials
CN102962192A (zh) * 2012-12-08 2013-03-13 张家港市金腾化工机械制造有限公司 化工用物料筛选机

Also Published As

Publication number Publication date
FR2723008A1 (fr) 1996-02-02
CN1128683A (zh) 1996-08-14
TW269646B (de) 1996-02-01
US5772044A (en) 1998-06-30
FR2723008B1 (fr) 1996-09-20
KR960003822A (ko) 1996-02-23
JPH0857428A (ja) 1996-03-05

Similar Documents

Publication Publication Date Title
US7025890B2 (en) Dual stage centrifugal liquid-solids separator
EP0694340A1 (de) Konzentrator für feine oder gebrochene Teilchen
EP2773450A1 (de) Verteilerplatte für eine gas/flüssigkeitsmischung mit weitgehend gegen mangelnde horizontalität unempfindlichen verteilerelementen
EP0345158B1 (de) Vorrichtung zur Entfernung von Staub bei Entladevorrichtungen für Schüttgut
CH420016A (fr) Dispositif de triage de produits solides granuleux
EP0852963A1 (de) Abscheider fur das unmittelbare Ausschleudern der Partikel aus einer gasförmigen Mischung in einer thermischen Cracker- oder FCC-Anlage
RU2304455C1 (ru) Сепаратор газовый вихревого типа (варианты)
RU58379U1 (ru) Сепаратор газовый вихревого типа (варианты)
WO2008068432A2 (fr) Appareil de sélection granulométrique et/ou de séchage de matière
FR2520640A1 (fr) Depoussiereur a inversion de courant
US5215553A (en) Apparatus for separating particles from a gaseous medium
FR2690362A1 (fr) Sasseur et procédé de sassage d'une matière en suspension dans l'air.
EP0140769B1 (de) Einrichtung zur Behandlung von Material in einem Wirbelbett
EP0740955A1 (de) Behälter mit verbessertem Abzug von Feststoffpartikeln
EP0174232A1 (de) Verfahren zum Klären einer feststoffbeladenen Flüssigkeit mittels eines Schlammbettes
FR2630658A1 (fr) Procede et dispositif pour la separation de produits de densites differentes, notamment des particules en suspension dans un fluide
FR2473349A1 (fr) Procede pour separer le liquide d'un melange de gaz et de liquide et separateur pour la realisation de ce procede
RU2299756C1 (ru) Сепаратор газовый вихревого типа эжекционный (варианты)
FR2468411A1 (fr) Separateur de particules
CA2103331A1 (en) Phase separator
RU2171720C2 (ru) Вихре-акустический классификатор
FR2528159A1 (fr) Procede et appareil pour le sechage de matieres pulverulentes en general
FR2560070A1 (fr) Procede et appareillage pour separer en deux phases un liquide boueux contenant des granules de differentes grosseurs, dans un recipient
FR2561123A3 (fr) Evaporateur a cascade
SU1673220A1 (ru) Циклон

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): BE DE ES FR GB GR IT NL

17P Request for examination filed

Effective date: 19960731

17Q First examination report despatched

Effective date: 19991126

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 20000407