EP3370882A1 - Système cyclonique - Google Patents

Système cyclonique

Info

Publication number
EP3370882A1
EP3370882A1 EP16810230.9A EP16810230A EP3370882A1 EP 3370882 A1 EP3370882 A1 EP 3370882A1 EP 16810230 A EP16810230 A EP 16810230A EP 3370882 A1 EP3370882 A1 EP 3370882A1
Authority
EP
European Patent Office
Prior art keywords
cyclone
cone
cyclone system
wall
flow
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.)
Granted
Application number
EP16810230.9A
Other languages
German (de)
English (en)
Other versions
EP3370882B1 (fr
Inventor
Hans-Joachim Boltersdorf
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP3370882A1 publication Critical patent/EP3370882A1/fr
Application granted granted Critical
Publication of EP3370882B1 publication Critical patent/EP3370882B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • B04C5/02—Construction of inlets by which the vortex flow is generated, e.g. tangential admission, the fluid flow being forced to follow a downward path by spirally wound bulkheads, or with slightly downwardly-directed tangential admission
    • B04C5/04—Tangential inlets
    • 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
    • B04C5/14—Construction of the underflow ducting; Apex constructions; Discharge arrangements ; discharge through sidewall provided with a few slits or perforations
    • B04C5/15—Construction of the underflow ducting; Apex constructions; Discharge arrangements ; discharge through sidewall provided with a few slits or perforations with swinging flaps or revolving sluices; Sluices; Check-valves
    • 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
    • B04C5/18—Construction of the underflow ducting; Apex constructions; Discharge arrangements ; discharge through sidewall provided with a few slits or perforations with auxiliary fluid assisting discharge
    • 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
    • B04C5/185—Dust collectors
    • 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
    • B04C5/26—Multiple arrangement thereof for series flow
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21B—FIBROUS RAW MATERIALS OR THEIR MECHANICAL TREATMENT
    • D21B1/00—Fibrous raw materials or their mechanical treatment
    • D21B1/04—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres
    • D21B1/12—Fibrous raw materials or their mechanical treatment by dividing raw materials into small particles, e.g. fibres by wet methods, by the use of steam
    • D21B1/30—Defibrating by other means
    • D21B1/34—Kneading or mixing; Pulpers
    • 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
    • D21D5/24—Purification of the pulp suspension by mechanical means; Apparatus therefor with the aid of centrifugal force in cyclones
    • 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
    • B04C2009/008—Combinations with other devices, e.g. fans, expansion chambers, diffusors, water locks with injection or suction of gas or liquid into the cyclone

Definitions

  • the invention relates to a cyclone system. Generally, the invention relates to a rotary separator.
  • the washed out in the lower reaches of a conditioner particles can be further treated in a preferably single-stage or multi-stage hydrocyclone, in particular to excrete sandy particles.
  • a hydrocyclone is simple in construction, leads to a good efficiency and requires little energy.
  • aluminum particles can also be discharged in such a hydrocyclone. Fibers produced in the cyclone can either be separated in a disc filter or thickener or returned to the conditioner in the area of the upper reaches.
  • a liquid such as water in particular be supplied to achieve a counterflow.
  • the liquid is supplied via nozzles or inflow openings. These can be distributed around the circumference in one or more levels.
  • the inflow should be such that a laminar flow favors the separation.
  • the cyclones are preferably designed as cyclones, in which an expanding output cone adjoins the central outlet.
  • a batch fraction is treated first in a first cyclone and then in a second cyclone, wherein in the first cyclone more liquid is supplied in countercurrent to increase the selectivity than in the second cyclone.
  • a high selectivity can be achieved by much in countercurrent liquid, while in the subsequent cyclone or in the subsequent cyclones, the amount of liquid supplied can be reduced.
  • a control makes it possible that at least the first cyclone at the discharge cone continuously material, preferably as a pasty material, is removed.
  • a discharge valve is only opened so far that a sediment on discharge material remains in the cyclone and the discharge according to the entry continuously is carried out.
  • sensors can determine the height of the sediment in the discharge to control the opening of the valve via a control device.
  • FIG. 1 schematically shows a device for treating composites with two small and one large hydrocyclone
  • FIG. 2 enlarges two cyclones connected in series
  • FIG. 4 shows the narrowing region of the first cyclone from FIG. 2,
  • FIG. 5 shows the upper outlet of the first cyclone from FIG. 2,
  • FIG. 6 shows the lower region of the cyclone shown in FIG. 2,
  • FIG. 7 shows the second cyclone shown in FIG. 2,
  • Figure 8 schematically shows an apparatus for treating composites with two small and two large hydrocyclone
  • FIG. 9 shows a cyclone with a double-walled output cone in a cutaway view.
  • FIG. 1 shows the incorporation of a conditioner 1 into a device with a large hydrocyclone 2.
  • This hydrocyclone 2 has an inlet cone 3 and a head region 4. In the head region, a tangential inlet 5 and a central outlet 6 are provided.
  • the input cone 3 can extend to the head region 4, so that the head region is conical. In an alternative embodiment, the input cone 3 may be cylindrical.
  • At the lower end of the input cone 3 is a smaller diameter 7, which passes as a constriction of the input cone 3 in a flared output cone 8.
  • a tapered collecting cone 9 is provided, which has a closed by a lock 10 discharge opening 11.
  • the conditioner 1 has in its upper portion 12 a screw 13 and below a sieve 14 which separates the upper portion 12 of an underflow 15.
  • the screw 13 is preferably formed as a spiral, which touches only above the screen 14 on the screen plate and drives the material radially outward.
  • a screw leading to the spiral is preferably dispensed with in order to prevent the entry of air into the lower area of the conditioner and to facilitate the discharge of air in the conditioner.
  • the substance mixture 16 treated in the conditioner 1 is discharged with a discharge screw 17 and conveyed to a buffer 18, which can receive a larger amount of the substance mixture in order to supply it to a collector 19 as required, from where the material passes over one Centrifugal pump 20 to the decentralized inlet 5 of the hydrocyclone 2 is promoted.
  • the collector 21 serves to dilute the circulated material with water 22 and then liquefied to the centrifugal pump 20 admit.
  • the collector 21 may therefore be designed as a screw conveyor, the liquid is added to achieve a conveyable via the centrifugal pump 20 consistency.
  • the material initially moves in a spiral shape to the constriction 7 and from there into the exit cone 8, where a material fraction on the Lock 10 is removed.
  • the remaining material migrates spirally in the output cone 8 back up into the input cone 3 and via the central drain 6 back to the conditioner.
  • Feed ports 23 in the lower portion 8 of the cyclone 2 allow water or other liquid to be supplied to facilitate separation of the material in the cyclone by a radially inward flow component.
  • the feed openings may be formed as nozzles which allow a liquid to enter the cyclone in a defined flow direction.
  • the shift gate 18 is changed over and the light material, in particular polyolefins, such as polyethylene and polypropylene, is discharged.
  • the underflow 15 of the conditioner 1 is fed via a pump 29 to a small cyclone 30, where sand or, for example, aluminum 31 is separated and discharged, while a cleaned of coarse grain suspension 32 is fed to a second small cyclone 33, in the fine grain 34 drops and discharged, while purified pulp 35 is discharged through the upper reaches and a filter 36 is supplied.
  • the fibers are separated, while the liquid passes via the line 37 to the collector 21 and from there to the centrifugal pump 20.
  • Figure 8 shows the use of two large cyclones connected in series.
  • a small cyclone has a maximum diameter of less than 0.5 m and a feed diameter of less than 100 mm
  • a large cyclone has a maximum diameter of more than 0.7 m and a diameter at the inlet of more than 150 mm.
  • the arrangement corresponds to that described in Figure 1 and it will deviate first cyclone 2 and then a cyclone 2 'go through.
  • An opening 51 above the slide 47 and in the lower part of the cyclone 42 serves to supply counterflow water to the cyclone 42 in the lower region.
  • the cyclone 42 consists of an upper part 52 which is conical or cylindrical and a constriction 53, under which a conical cyclone element widens downwards.
  • the second cyclone 55 is connected downstream of the first cyclone 42 and the coarse-grain purified suspension 43 at the upper reaches of the first cyclone 42 is fed to the tangential inlet 56 of the second cyclone 55.
  • This second cyclone 55 is constructed like the first cyclone 42 and serves to separate the coarse-grain-cleaned suspension of fine grain 57 which is taken off at the take-off 58 from the second cyclone 55.
  • suspension 59 purified from coarse grain and fine grain is taken from the second cyclone 55.
  • counterflow water 60 supports the separation in the cyclone and slide 61 and 62 define a collecting container 63, are provided at the openings 64 and 65 for the vent and filling water.
  • FIG. 3 shows how coarse grain 70, fine grain 71 and pulp 72 are fed to tangential feed 41.
  • This contaminated with coarse grain and fine grain pulp suspension 70, 71, 72 is conveyed tangentially into the first cyclone 42 by means of a pump 29.
  • a downwardly directed vortex 73 is formed, which is called a primary vortex.
  • This primary vortex first pulls down pulp, coarse grain and fine grain.
  • the particles with a higher specific gravity than that of the liquid in the present case are coarse grain 70 and fine grain 71.
  • the particles are pushed out of the primary vortex 73 by the high centrifugal force and sink downwards at the edge of the cone 52.
  • FIG. 5 shows that the decrease of the lighter fine grain 71 by countercurrent water 51, which is supplied from below, is prevented from sinking and is initially held in suspension in cone 54. The lighter fine grain 71 then enters the upward vortex 74 and is transported together with the pulp 72 via the upper run in the second cyclone 55.
  • FIG. 7 shows the separation in the second cyclone 55, at the tangential inlet 56 of which coarse grain-cleaned pulp suspension of pulp 72 and fine grain 71 is supplied. Hydrogen 72 and fine grain 71 form a primary vortex 76 in the upper part 75 of the second cyclone 55 and fine grain 71 is forced outwards out of the primary vortex 76 and sinks downwards at the edge of the cone 75. The cleaned pulp 72 is discharged with the secondary vortex 77 via the upper run 78.
  • the fine grain 71 decreases in the second cyclone 55, so that in the lower portion 79 of the second cyclone 55, a fine grain fraction is formed, which via the collecting container 63 can be deducted as pasty fine grain fraction 80.
  • no countercurrent water is used in the rule.
  • the upper part of the cyclone may have a cylindrical area or even be completely cylindrical to the point of constriction.
  • this cylindrical portion could be shorter than tube in the upper region of the cyclone than the conical portion below the constriction.
  • FIG. 9 shows a hydrocyclone 90 which can be used as neither and in particular as a large cyclone.
  • the liquid to be treated passes tangentially into the cyclone and spirals on the conical wall 92, which may also be cylindrical, to a point 93, after which an exit cone 94 connects.
  • the small angle 95 of the wall 92 from 6 to 7 ° relative to the central axis 96 ensures a sufficiently laminar flow in the outlet cone.
  • the outer wall 98 has two feeds 100, 101 for water or gas and the inner wall 102 has an upper portion 108 above the inlets 100 and 101 with a plurality of feed openings 104. Since the feed openings are bores in the inner wall 103 which are perpendicular are drilled into the wall, there is a Zu Industriesströmung 105 in a buoyancy angle 106 of more than 0 ° and preferably less than 20 ° relative to a normal 107 of the central axis 96.
  • the holes of the feed openings 104 have a diameter of 2 to 6 mm and preferably of about 4 mm.
  • the inlets 100 and 101 lead to a flow which impinges against the opposite outer side of the inner wall 103 and distributed between inner wall 103 and outer wall 98. This creates an overpressure between the walls, which ensures that through the plurality of feed apertures 104 pass a uniform and evenly distributed flow into the cyclone, which faces up slightly to impart an upward momentum to the particles in the cyclone. This exacerbates the effect of the light particles flowing up while the heavier particles fall down.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Fluid Mechanics (AREA)
  • Cyclones (AREA)

Abstract

Système cyclonique, en particulier pour un conditionneur, qui comporte une partie tête présentant un orifice d'entrée excentré, de préférence tangentiel, et un orifice de sortie central, et procédé permettant de faire fonctionner un cyclone. Ledit système cyclonique présente un cône de sortie évasé qui s'élargit selon un angle de plus de 0° et de moins de 20° par rapport à l'axe central du cyclone.
EP16810230.9A 2015-11-06 2016-11-07 Système cyclonique Active EP3370882B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102015014285 2015-11-06
DE102016007548.1A DE102016007548A1 (de) 2015-11-06 2016-06-22 Zyklonsystem
PCT/DE2016/000388 WO2017076384A1 (fr) 2015-11-06 2016-11-07 Système cyclonique

Publications (2)

Publication Number Publication Date
EP3370882A1 true EP3370882A1 (fr) 2018-09-12
EP3370882B1 EP3370882B1 (fr) 2021-01-06

Family

ID=58584427

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16810230.9A Active EP3370882B1 (fr) 2015-11-06 2016-11-07 Système cyclonique

Country Status (10)

Country Link
US (1) US20190060918A1 (fr)
EP (1) EP3370882B1 (fr)
JP (1) JP2018533479A (fr)
KR (1) KR20180090281A (fr)
AU (1) AU2016351053A1 (fr)
CA (1) CA3004375A1 (fr)
DE (2) DE102016007548A1 (fr)
HK (1) HK1253278A1 (fr)
RU (1) RU2018120722A (fr)
WO (1) WO2017076384A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11932816B2 (en) * 2019-02-15 2024-03-19 Exxonmobil Chemical Patents Inc. Coke and tar removal from a furnace effluent
CA3153460A1 (fr) * 2021-03-30 2022-09-30 Kyata Capital Inc. Systemes et methodes d'elimination de contaminants des surfaces de materiaux solides
DE102022110164A1 (de) 2021-08-26 2023-03-02 Voith Patent Gmbh Hydrozyklonanordnung

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735547A (en) * 1956-02-21 vissac
BE501733A (fr) * 1950-03-09
DE1092886B (de) * 1953-09-16 1960-11-17 Bauer Bros Company Hydrozyklon zum Abtrennen von Faserstoffen aus einer Suspension
AT285486B (de) * 1968-04-22 1970-10-27 Oesterr Amerikan Magnesit Verfahren und Zentrifugalkraftklassierer zum Trennen einer Trübe in mehrere Kornanteile
US3612276A (en) * 1969-04-29 1971-10-12 Bird Machine Co Vortex-type separator apparatus
DE2410700A1 (de) * 1974-03-06 1975-09-11 Bayer Ag Verfahren zur abscheidung von feststoffen aus einem gasstrom und dafuer geeignete vorrichtung
US4960525A (en) * 1988-09-26 1990-10-02 The United States Of America, As Represented By The Secretary Of Agriculture Hydrocyclone for washing particles in liquid suspension
GB2284165A (en) * 1993-11-24 1995-05-31 Winton Eurotech Limited Dust Separator
DE202005003104U1 (de) * 2005-02-25 2005-05-12 Voith Paper Patent Gmbh Schwerteilaustragsvorrichtung für einen zum Abscheiden von Schwerteilen aus einer Faserstoffsuspension bestimmten Hydrozyklon
AT512479B1 (de) * 2012-02-10 2013-11-15 Andritz Energy & Environment Gmbh Verfahren zur feinstoffreduktion im rea-gips

Also Published As

Publication number Publication date
DE102016007548A1 (de) 2017-05-11
DE112016005089A5 (de) 2018-07-26
US20190060918A1 (en) 2019-02-28
EP3370882B1 (fr) 2021-01-06
AU2016351053A1 (en) 2018-05-24
HK1253278A1 (zh) 2019-06-14
RU2018120722A3 (fr) 2020-05-18
RU2018120722A (ru) 2019-12-06
WO2017076384A1 (fr) 2017-05-11
JP2018533479A (ja) 2018-11-15
KR20180090281A (ko) 2018-08-10
CA3004375A1 (fr) 2017-05-11

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