EP0105291A1 - Cyclon purification plant - Google Patents

Cyclon purification plant

Info

Publication number
EP0105291A1
EP0105291A1 EP19830900977 EP83900977A EP0105291A1 EP 0105291 A1 EP0105291 A1 EP 0105291A1 EP 19830900977 EP19830900977 EP 19830900977 EP 83900977 A EP83900977 A EP 83900977A EP 0105291 A1 EP0105291 A1 EP 0105291A1
Authority
EP
European Patent Office
Prior art keywords
chamber
cyclons
cyclon
liquid
partition
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Withdrawn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
EP19830900977
Other languages
German (de)
French (fr)
Inventor
Tron-Halvard Fladby
Leif Hovind
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.)
TITECH Joh H Andresen
Titech Jon H Andresen
Original Assignee
TITECH Joh H Andresen
Titech Jon H Andresen
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
Priority claimed from NO820968A external-priority patent/NO151615C/en
Priority claimed from NO830943A external-priority patent/NO830943L/en
Application filed by TITECH Joh H Andresen, Titech Jon H Andresen filed Critical TITECH Joh H Andresen
Publication of EP0105291A1 publication Critical patent/EP0105291A1/en
Withdrawn legal-status Critical Current

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
    • B04C5/12—Construction of the overflow ducting, e.g. diffusing or spiral exits
    • B04C5/13—Construction of the overflow ducting, e.g. diffusing or spiral exits formed as a vortex finder and extending into the vortex chamber; Discharge from vortex finder otherwise than at the top of the cyclone; Devices for controlling the overflow
    • 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
    • B04C5/24—Multiple arrangement thereof
    • B04C5/28—Multiple arrangement thereof for parallel flow
    • D—TEXTILES; PAPER
    • D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
    • D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
    • D21F1/00—Wet end of machines for making continuous webs of paper
    • D21F1/66—Pulp catching, de-watering, or recovering; Re-use of pulp-water
    • D21F1/68—Pulp catching, de-watering, or recovering; Re-use of pulp-water using hydrocyclones

Definitions

  • the present invention relates to a hydrocyclon plant for separation of suspended solid from a liquid.
  • the plant is particularly adapted to separate suspended particles from water, for instance filler particles in effluence from paper mills or to remove a part of the filler being present in the white water system in a paper machine.
  • the plant exhibits large capasity, is compact and easily maintained it is well suited in all cases in which particles in a liqui can be removed by means of a hydrocyclon.
  • the plant is well suited when it is desirable to remove fine particles from a liquid. This is particularly so when in the plant is utilized a cyclon of the type being disclosed in Norwegian , Application No. 83.0058.
  • Hydrocyclons being used in the present devise are well known and a short account can be found inter alia in Encyclopedia of Chemical Technology, 2nd edition volume 4 pp. 747-748.
  • Hydrocyclons are well adapted for removing of fine particles being present in low or medium solid concentrations. Due to share forces being present in the vortex in the hydro ⁇ cyclons, separation is not effected by the centrifugal force alone but the form of the particles exerts a certain effect. Hydrocyklons have thus been used in the pulp and paper indust in order to separate fibers of different length.
  • a hydrocyclon consists of a rotation symmetrical, elongated hollow body which under working condition is arranged in a vertical position and the upper end of which is provided with at least one tangential directed inlet through which the liquid to be treated is injected with high velocity in such manner that a vortex stream is created in the hydrocyclon.
  • a centrally arranged outlet opening In the upper part of known cyclons is a centrally arranged outlet opening, the cross sectional area of which is larger than the combined cross sectional area for the inlet openings. Through the upper outlet opening is exhausted the injected liquid now fully or partly derived of solid particles
  • a central outlet opening In the lower part of the hydrocyclon is arranged a central outlet opening, the cross sectional area of which is less than the cross sectional area for the inlet openings and serves as an outlet for a minor part of the injected liquid which at the lower part of the hydrocyclon is enriched with respect to solid matter.
  • the rotation symmetrical hollow body which in the length direction can be designed conically such as shown in US paten 2.920.761, or can be sylindrical in the upper part with a conical lower part such as shown in Norwegian Patent No. 144.128.
  • different modifications of such hydrocyclons have been suggested, for instance with respect to th_e inlet for the liquid to be treated, as shown in the above mentioned Norwegian Patent or with modification of the outlet for the part of the liquid enriched with solid matter, such, as shown in US patent No. 4.309.238.
  • Fig.l shows a section through a plant according to the invention.
  • Fig. 2 discloses one of two essentially identical partitions which partly are used to divide the chamber, in which the hydrocyclons are arranged, to compartments and partly to secure the cyclons within the chamber.
  • Fig. 3 shows a horisontal projection of the upper part of a cyclon with a particularly designed inlet as well as a detai of the fastening device for the. cyclon to the partition.
  • fig. 1 is shown how a number of hydrocyclons 1 are arrang within a common chamber 2.
  • Water 4 or the liquid to be treate is injected from a not shown feed pump to th.e compartment 15 via the inlet 3, whereby the cyclons 1 are surrounded by water 4 under the preferred pressure, hence the water is injected to the inlet dyse 5 of each, hydrocyclon. All the hydrocyclons will thus be provided with water or the liquid at essentially the same pressure.
  • a close fitting partition 6 provid with holes 7 for each cyclon 1.
  • the partition 6 is removable connected to the chamber such that all cyclons, if necessary simultaneously can be lifted out of the chamber.
  • a tight fitting lid 8 comprises the upper part of the chamber 2 such that under the lid is formed a compartment 9 being separated from the water underneath the partition 6.
  • the outlets for purified water from all cyclons opens up in the compartment 9 being formed between the lid 8 and the partitio 6.
  • the purified water or the accept is exhausted via the outlet tube 10.
  • a further partition 11 In the lower part of the chamber 2 is arranged a further partition 11.
  • the lower partition 11 is prererably arranged tight fitting to the wall of the chamber 2 and is provided with corresponding holes 7 as in the plate 6 and through which the lower outlets 12 of the hydrocyclons extends in a tight fitting manner such, that the water 4 in the compartme 15 being defined between the two partitions 6 and 11 respec ⁇ tively cannot penetrate to the void 13 underneath the partition 11.
  • the cyclons 1 being arranged in the chamber 2 can be of a type known per se being secured to the partition 6 and the inlet 5 which, is arranged underneath the partition such that water 4 being introduced via the inlet 3 can be forced into the inlet 5 of each, cyclon.
  • the cyclons 1 are prefer- ⁇ ably of the type described in Norwegian Patent Application No. 83.0085. Said cyclon is characterized by a large capacity and ability to separate very small particles.
  • the liquid being introduced to the cyclon 1 through, the inlet 5 is lead into a rotation forming chamber 40 being defined between the inner wall of th.e cyclon 1 and a guiding tube 2Q having a conical form and with, a conicity in the range 4-1Q .
  • the rotating liquid stream is forced down through, the cyclon and returns as usual in its lover part and the ascending, purified liquid or accept is lead out through an annular outl 120 being defined between the guide tube 20 and especially designed body 110 to the chamber 9 and out of the plant via the outlet 10. 5
  • the liquid is not exhausted through a central outlet, such as usual for common cyclons, but through the annular outlet 120 being formed between the conical tube 20 and the centrally arranged body 110.
  • the 10 body 110 is secured to a director plate 90 which directs the stream into the compartment 9 above the partition 6 and out through the outlet 10.
  • a fastening device 50 which in fig. 1 is shown to comprise a through bolt 51, a collar 52 engaging the flange 53 on the cyclon 1.
  • the collar 52 being secured by means of the bolt 51 thus support the cyclon 1 which firml is held engaged against the collar 52 by means of a collar 20 54 being secured by means of the nut 55.
  • a ceiling ring is provided in a groove in the partition, for instance an O-ring as indicated in fig. 5.
  • Other ceiling and fastening devices is of course possible.
  • the height of the chamber was 3,3 m and the diameter 1,37 .
  • the dia ⁇ meter of th.e individual cyclons was approx. 7,6 cm.
  • the device was used to separate solid particles from sea wate

Landscapes

  • Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Cyclones (AREA)
  • Separation Of Solids By Using Liquids Or Pneumatic Power (AREA)
  • Devices And Processes Conducted In The Presence Of Fluids And Solid Particles (AREA)

Abstract

Installation hydrocyclonique pour la séparation de particules solides d'un liquide dans laquelle un certain nombre d'hydrocyclones agissent en parallèle. L'installation comprend une chambre extérieure (2) divisée en trois compartiments (9, 15, 13), où les ouvertures pour le liquide accepté (120) des cyclones conduisent dans une chambre (9) pourvue d'un orifice de sortie (10) pour le liquide accepté, les ouvertures d'admission (5) pour les cyclones (1) étant aménagées dans la chambre (15) dans laquelle le liquide (4) à traiter est injecté au travers d'une ouverture d'admission (3) et dans laquelle les ouvertures de rejet (12) des cyclones débouchent dans la chambre (13) qui est reliée à un orifice de sortie (14) au travers duquel s'échappe le milieu rejeté.Hydrocyclonic installation for the separation of solid particles from a liquid in which a certain number of hydrocyclones act in parallel. The installation comprises an external chamber (2) divided into three compartments (9, 15, 13), where the openings for the accepted liquid (120) of the cyclones lead into a chamber (9) provided with an outlet orifice (10 ) for the accepted liquid, the intake openings (5) for the cyclones (1) being arranged in the chamber (15) into which the liquid (4) to be treated is injected through an intake opening (3 ) and in which the rejection openings (12) of the cyclones open into the chamber (13) which is connected to an outlet orifice (14) through which the rejected medium escapes.

Description

Cyclon Purification Plant. The present invention relates to a hydrocyclon plant for separation of suspended solid from a liquid. The plant is particularly adapted to separate suspended particles from water, for instance filler particles in effluence from paper mills or to remove a part of the filler being present in the white water system in a paper machine. As the plant exhibits large capasity, is compact and easily maintained it is well suited in all cases in which particles in a liqui can be removed by means of a hydrocyclon. The plant is well suited when it is desirable to remove fine particles from a liquid. This is particularly so when in the plant is utilized a cyclon of the type being disclosed in Norwegian , Application No. 83.0058.
Hydrocyclons being used in the present devise are well known and a short account can be found inter alia in Encyclopedia of Chemical Technology, 2nd edition volume 4 pp. 747-748.
Hydrocyclons are well adapted for removing of fine particles being present in low or medium solid concentrations. Due to share forces being present in the vortex in the hydro¬ cyclons, separation is not effected by the centrifugal force alone but the form of the particles exerts a certain effect. Hydrocyklons have thus been used in the pulp and paper indust in order to separate fibers of different length.
Normally a hydrocyclon consists of a rotation symmetrical, elongated hollow body which under working condition is arranged in a vertical position and the upper end of which is provided with at least one tangential directed inlet through which the liquid to be treated is injected with high velocity in such manner that a vortex stream is created in the hydrocyclon.
In the upper part of known cyclons is a centrally arranged outlet opening, the cross sectional area of which is larger than the combined cross sectional area for the inlet openings. Through the upper outlet opening is exhausted the injected liquid now fully or partly derived of solid particles In the lower part of the hydrocyclon is arranged a central outlet opening, the cross sectional area of which is less than the cross sectional area for the inlet openings and serves as an outlet for a minor part of the injected liquid which at the lower part of the hydrocyclon is enriched with respect to solid matter.
The rotation symmetrical hollow body which in the length direction can be designed conically such as shown in US paten 2.920.761, or can be sylindrical in the upper part with a conical lower part such as shown in Norwegian Patent No. 144.128. In order to adapt the hydrocyclons for different purposes and in order to improve the. efficiency, different modifications of such hydrocyclons have been suggested, for instance with respect to th_e inlet for the liquid to be treated, as shown in the above mentioned Norwegian Patent or with modification of the outlet for the part of the liquid enriched with solid matter, such, as shown in US patent No. 4.309.238.
Particular outlets for the purif ed liquid is shown in US patent No. 4.259.180 and French, patent No. 1.518.253.
Different types of hydrocyclons are inter alia disclosed in the US patent No. 4.265.47Q, 4.28Q.902, 4.305.825, 4.267.048 as well as in US patent No. 4.272.26Q vhich discloses a cyclon for separation of solid particles from gasses.
It is commonly known to couple a number of cyclons in parallell, that is the inlets of the hydrocyclons are connect to a common pipe and the outlets from the cyclons from the purified liquid is connected to a common pipe whereas the respective outlet for the liquid phase being enriched with respect to the particles is exhausted via a common pipe connected to the lower part of the hydrocyclons. Such a plant comprising a number of hydrocyclons is spacious and it is difficult to obtain equal conditions for all cyclons with the result that not all cyclons in such a battery of cyclons will -work under optimal conditions. By means of the present invention is provided a compact plan by means of which it is possible to have a number of cyclons working under essential equal conditions in that all cyclons are enclosed in a chamber in such manner that all the cyclon are provided with the liquid to be treated under the same pressure.
The invention shall be eluciated with reference to the enclo drawings, in which:
Fig.l shows a section through a plant according to the invention.
Fig. 2 discloses one of two essentially identical partitions which partly are used to divide the chamber, in which the hydrocyclons are arranged, to compartments and partly to secure the cyclons within the chamber.
Fig. 3 shows a horisontal projection of the upper part of a cyclon with a particularly designed inlet as well as a detai of the fastening device for the. cyclon to the partition.
In fig. 5 is shown how the lower part of the cyclon extends through the lower partition, which is designed in the same manner as the upper partition.
In fig. 1 is shown how a number of hydrocyclons 1 are arrang within a common chamber 2. Water 4 or the liquid to be treate is injected from a not shown feed pump to th.e compartment 15 via the inlet 3, whereby the cyclons 1 are surrounded by water 4 under the preferred pressure, hence the water is injected to the inlet dyse 5 of each, hydrocyclon. All the hydrocyclons will thus be provided with water or the liquid at essentially the same pressure. In the upper part of the compartment 15 is arranged a close fitting partition 6 provid with holes 7 for each cyclon 1. The partition 6 is removable connected to the chamber such that all cyclons, if necessary simultaneously can be lifted out of the chamber.
OM A tight fitting lid 8 comprises the upper part of the chamber 2 such that under the lid is formed a compartment 9 being separated from the water underneath the partition 6. The outlets for purified water from all cyclons opens up in the compartment 9 being formed between the lid 8 and the partitio 6. The purified water or the accept is exhausted via the outlet tube 10.
In the lower part of the chamber 2 is arranged a further partition 11. The lower partition 11 is prererably arranged tight fitting to the wall of the chamber 2 and is provided with corresponding holes 7 as in the plate 6 and through which the lower outlets 12 of the hydrocyclons extends in a tight fitting manner such, that the water 4 in the compartme 15 being defined between the two partitions 6 and 11 respec¬ tively cannot penetrate to the void 13 underneath the partition 11.
From the reject outlet 12 of th.e cyclons is" exhausted a minor part of the injected liquid. As usual for hydrocyclons said part being enriched with respect to the solid phase of par¬ ticles being separated from the feed water injected to the inlet tube 3. The enriched phase or reject is removed from the void 13 via the outlet tube 14.
The cyclons 1 being arranged in the chamber 2 can be of a type known per se being secured to the partition 6 and the inlet 5 which, is arranged underneath the partition such that water 4 being introduced via the inlet 3 can be forced into the inlet 5 of each, cyclon. The cyclons 1 are prefer-^ ably of the type described in Norwegian Patent Application No. 83.0085. Said cyclon is characterized by a large capacity and ability to separate very small particles. The liquid being introduced to the cyclon 1 through, the inlet 5 is lead into a rotation forming chamber 40 being defined between the inner wall of th.e cyclon 1 and a guiding tube 2Q having a conical form and with, a conicity in the range 4-1Q . The rotating liquid stream is forced down through, the cyclon and returns as usual in its lover part and the ascending, purified liquid or accept is lead out through an annular outl 120 being defined between the guide tube 20 and especially designed body 110 to the chamber 9 and out of the plant via the outlet 10. 5
In the preferred used cyclon the liquid is not exhausted through a central outlet, such as usual for common cyclons, but through the annular outlet 120 being formed between the conical tube 20 and the centrally arranged body 110. The 10 body 110 is secured to a director plate 90 which directs the stream into the compartment 9 above the partition 6 and out through the outlet 10.
In order to aid replacement of the cyclons 1 the same are 15 fastened by means of a fastening device 50, which in fig. 1 is shown to comprise a through bolt 51, a collar 52 engaging the flange 53 on the cyclon 1. The collar 52 being secured by means of the bolt 51 thus support the cyclon 1 which firml is held engaged against the collar 52 by means of a collar 20 54 being secured by means of the nut 55.
In the lower part the cyclon 1 is passed through, correspondin holes 7 in the partition 11, as indicated in fig. 5. In order to prevent leakage of the injected liquid 4 to the compartmen 25 under the partition 11 a ceiling ring is provided in a groove in the partition, for instance an O-ring as indicated in fig. 5. Other ceiling and fastening devices is of course possible.
In a hydrocyclon plant according to the present invention
30 containing 85 hydrocyclons of the preferred type the height of the chamber was 3,3 m and the diameter 1,37 . The dia¬ meter of th.e individual cyclons was approx. 7,6 cm.
V
The device was used to separate solid particles from sea wate
35 and the number of particles ofthe sea water introduced as wel as the accept water was determined by means of a "COULTER COUNTER TAII". The sea water was introduced at a pressure of 2,1 bar at which pressure each cyclon had a capasity of 150 1/min. , that is the total capasity of the plant was approx. J 12 750 1/min. The separation efficiency of the plant is apparent from the following table:
COULTER COUNTER TAII
Liquid: Sea water Place: NUTEC, Bergen
Efficiency
Particle Number of Number of Percentage Accumulated diametre particles particles of particles percentage, urn per ml of per ml in removed particles feed water accept larger than water
1.0-1.25 22436 17072 23.9 75.4
1.25-1.6 10578 8095 23.5 76.7
1.6-2.0 6268 4357 30.5 78.1
2.0-2.5 4651 2971 36.1 79.5
2.5-3.2 2765 1529 44.7 81.6
3.2-4.0 1727 759 56.1 83.8
4.0-5.1 1084 299 72.4 86.0
5.1-6.4 707 107 84.9 87.6
6.4-8.0 423 58 86.3 88.1
8.0-10.1 233 26 88.8 88.6
10.1-12.7 100 Q - 91.0 88.5
12.7-16.0 39 6 84.6 87.1
16.0-20.2 19 3 84.2 88.8
20.2-25.2 2 0 100.0 100.0
25.2-32 1 0 100.0 100.0
As apparent an excellent separation and high capacity is obtained by means of the new cyclon plant.

Claims

C l a i m s
1. Cyclon plant to separate solid particles from a liquid comprising a number of hydrocyclons coupled in parallell, c h a r a c t e r i z e d i n an outer chamber (2) divided in three compartments (9,12,13) in that the accept outlets (120) of the cyclons lead into the chamber (9) being provided with an outlet (10) for the accept, that the inlet openings (5) of the cyclons (1) is arranged within the compartment (151 to which the liquid (4) to be purified is introduced via the inlet opening (31 and that the reject outlet openings (12) opens into the chamber (131 being connected to an outlet (141 for removal of the reject liqui
2. Device according to claim 1, c h a r a c t e r i z e d i n that the chamber (21 by means of partitions (6,11), provided with holes (7) is divided in compartments (9,15,13) and that the upper part of the cyclons by means of a fixing device (501 is secured to the partition (61 with the accept openings (1201 of the cyclons (11 leading to the chamber
(91 and that the inlet openings (5) of the cyclons are arranged underneath the partition (61 and that the cyclons
(11 extend through the partition (111 with, the reject open¬ ings (121 of the cyclons opening into the chamber (13) under the partition (111.
3. Cyclon device according to the claims 1 and 2, c ha r a c t e r i z e d i n that the cyclon (1) is provided with a centrally arranged body (1101 which together with an annular tube (201 forms an annular outlet (1201 to the chamber (9) for the accept liquid.
4. Device according to the claims 1-3, c h a r a c t e ¬ r i z e d i n that the inlet openings (51 for the cyclons (11 lead into a vortex forming chamber (40] defined between the inner wall of the cyclon and the guiding tube (201.
E
EP19830900977 1982-03-23 1983-03-23 Cyclon purification plant Withdrawn EP0105291A1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
NO820968 1982-03-23
NO820968A NO151615C (en) 1982-03-23 1982-03-23 PROCEDURE FOR PURIFICATION OF LIQUID, SPECIAL SEAWATER, AND A PROCEDURE FOR USING THE PROCEDURE
NO830943A NO830943L (en) 1983-03-16 1983-03-16 CYCLONE WASTEWATER TREATMENT.
NO830943 1983-03-16

Publications (1)

Publication Number Publication Date
EP0105291A1 true EP0105291A1 (en) 1984-04-18

Family

ID=26647808

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830900977 Withdrawn EP0105291A1 (en) 1982-03-23 1983-03-23 Cyclon purification plant

Country Status (7)

Country Link
EP (1) EP0105291A1 (en)
JP (1) JPS59500703A (en)
DK (1) DK536383D0 (en)
FI (1) FI834290A0 (en)
GB (1) GB2128506A (en)
SE (1) SE8306477D0 (en)
WO (1) WO1983003369A1 (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU575070B2 (en) * 1983-08-11 1988-07-21 Conoco Specialty Products Inc. Liquid separator apparatus
US5336410A (en) * 1991-08-01 1994-08-09 Conoco Specialty Products Inc. Three chamber vessel for hydrocyclone separator
GB9602631D0 (en) * 1996-02-09 1996-04-10 Vortoil Separation Systems Ltd Hydrocyclone separator
GB2353236A (en) 1999-08-17 2001-02-21 Baker Hughes Ltd Cyclone separator with multiple baffles of distinct pitch
US20080099410A1 (en) * 2006-10-27 2008-05-01 Fluid-Quip, Inc. Liquid treatment apparatus and methods
JP6249163B2 (en) * 2014-02-14 2017-12-20 パナソニックＩｐマネジメント株式会社 Water treatment equipment
CN104587928B (en) * 2014-12-10 2017-01-11 上海华畅环保设备发展有限公司 Integration method and device for micro-hydrocyclone in tower vessel

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2765918A (en) * 1953-05-11 1956-10-09 Stamicarbon Multiple hydrocyclone
SE373760B (en) * 1973-08-06 1975-02-17 N A L Wikdahl
FI56037C (en) * 1975-10-30 1979-11-12 Enso Gutzeit Oy HYDROCYCLON
GB1527794A (en) * 1976-01-28 1978-10-11 Nat Res Dev Cyclone separator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8303369A1 *

Also Published As

Publication number Publication date
GB2128506A (en) 1984-05-02
DK536383A (en) 1983-11-23
DK536383D0 (en) 1983-11-23
FI834290A (en) 1983-11-23
SE8306477L (en) 1983-11-23
SE8306477D0 (en) 1983-11-23
JPS59500703A (en) 1984-04-26
FI834290A0 (en) 1983-11-23
GB8330905D0 (en) 1983-12-29
WO1983003369A1 (en) 1983-10-13

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Inventor name: FLADBY, TRON-HALVARD

Inventor name: HOVIND, LEIF