US2665061A - Counter current extraction centrifuge - Google Patents

Counter current extraction centrifuge Download PDF

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Publication number
US2665061A
US2665061A US128408A US12840849A US2665061A US 2665061 A US2665061 A US 2665061A US 128408 A US128408 A US 128408A US 12840849 A US12840849 A US 12840849A US 2665061 A US2665061 A US 2665061A
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United States
Prior art keywords
liquid
drum
specifically
channels
rotation
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Expired - Lifetime
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US128408A
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English (en)
Inventor
Steinacker Peter
Boyng August
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Individual
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Individual
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Priority claimed from DE1948P0022238 external-priority patent/DE1153876B/de
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Publication of US2665061A publication Critical patent/US2665061A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B5/00—Other centrifuges
    • B04B5/06—Centrifugal counter-current apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D11/00—Solvent extraction
    • B01D11/04—Solvent extraction of solutions which are liquid
    • B01D11/0476—Moving receptacles, e.g. rotating receptacles
    • B01D11/048—Mixing by counter-current streams provoked by centrifugal force, in rotating coils or in other rotating spaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B04—CENTRIFUGAL APPARATUS OR MACHINES FOR CARRYING-OUT PHYSICAL OR CHEMICAL PROCESSES
    • B04B—CENTRIFUGES
    • B04B7/00—Elements of centrifuges
    • B04B7/08—Rotary bowls
    • B04B7/12—Inserts, e.g. armouring plates
    • B04B7/14—Inserts, e.g. armouring plates for separating walls of conical shape

Definitions

  • Fig. 1 is a vertical section through the centrifugal drum of a countercurrent extraction centrifugal machine with an inserted plate package, and with the discharging devices with overfiow edges for discharging the liquids,
  • Fig. 2 is a vertical section through a drum of similar structure, with stripping disks and a sealed connection between the inlet chamber for the specifically lighter liquid and the feeding channel for same,
  • Fig. 3 is a vertical section through a drum of similar structure, but with bent plates,
  • Fig. 4 is a vertical section through the drum of a, countercurrent extraction centrifugal machine with an inserted package of plates divided in three parts, and
  • Fig. 5 is an enlarged fragmentary view of a portion of the intermediate set of plates as shown in Fig. 4.
  • Figs. 1 and 2 the filling of the drum of the specifically lighter liquid is indicated by horizontal dotted lines, and the drum filling for the specifically heavier liquid by vertical dotted lines.
  • the direction of flow of the liquids is indicated by arrows.
  • Fig. l the centrifugal drum with its inner portion 3 is screwed on the driving spindle by a nut 2.
  • the cover 4 of the drum is connected with the outer bottom portion 3a of the drum by means of a threaded ring 5.
  • the plate package 8 is borne by a hollow conical member 9 inserted into the drum the lower wall of this member 9 acting as a distributor for the specifically lighter liquid and the upper part 9a of said member surrounding the inlet chamber I for the specifically lighter liquid.
  • the inserted member 9 is provided with ducts II lying in a distance :R from the axis of rotation of the drum, the ducts II leading to corresponding distributing channels I2 near the outer rims of the plates through which channels I2 the specifically lighter liquid enters into the plate package.
  • the specifically lighter liquid enters from the outside through the inlet pipe I3 into the inlet chamber I Il, and the specifically heavier liquid enters through the feed pipe I4 into an inlet chamber I which is formed by a combined separating disc I6, ISa.
  • the latter has in its lower portion ducts I1 leading to corresponding channels IB of the plates 8 near their inner rims and forming a passage for the specifically heavier liquid to enter into the plate package.
  • the specifically heavier liquid fiows along the inner side of the plates 8 towards the outside into the space I9 defined by the outer shell 3a of the drum whence the liquid passes through channels 20 into the discharging chamber 2I situated between the drum cover 4 and the separating disk I6.
  • the specifically heavier liquid leaves the drum from the chamber 2I over the inner or overflow edge of the disk 6. This overflow edge is positioned in a distance :RH from the axis of rotation of the drum.
  • the revolving speed of the specifically heavier liquid on this spot is :v
  • the liquid level of the specifically lighter liquid in the inlet chamber I 0 lies in a distance :RL from the axis of rotation.
  • the overflow edge of the disk 6 is situated in such a distance :RH from the axis of rotation of the drum, that the centrifugal pressure of the specifically heavier liquid from its level in the discharging chamber 2I up to the distributing channels I2 of the plates 8 near their outer rims, in the distance :R from the axis of rotation, is smaller than the centrifugal pressure of the specifically lighter liquid from its level in the inlet chamber IIl up to the distributing channels I4 near the outer rims of the plates 8, in the disstance :R from the axis of rotation.
  • both liquids are mixed.
  • the liquids fiow in counter current to each other and are still partially mixed with each other, while in the inner and outer parts of the plate package 8 a sharp separation of the liquids takes place.
  • the discharge may also be executed by means of stripping disks the diameter of which is designated according to the above mentioned formulae.
  • the connection of the stationary feeding pipe 26 with the inner part 25 of the distributor 21 surrounding the inlet cham ber 28 for the specifically lighter liquid is executed by means of a gasket 29.
  • the specifically lighter liquid is fed to the centrifugal drum under the overpressure p.
  • the gasket 29 is fixed in a known manner between the inner rim of the distributor 25 and the threaded ring 30 and is pressed against the inlet pipe 26 by the overpressure of the liquid in the inlet chamber 28.
  • the inlet chamber 28' is completely filled with the specifically lighter liquid, so that owing to this fact there is not even a free liquid level, but the over pressure p is already prevailing in the axis of rotation.
  • the specifically lighter liquid flows through the distributing channels 3I lying in a distance :R from the axis of rotation, and enters the plate package 32. Thence the liquid flows along the outer sides of the plates into the chamber 33 between the inner rims of the plates and the upper portion 25 of the distributor 2'1 and thence into the discharge chamber 34 in which the liquid is caught by the stripping disk 35 and conveyed by same through channels 36 out of the drum.
  • the liquidi leviel wliere ⁇ the specihale l-y heavieir'liduidf is:y caugi tiie ⁇ 1 stripping' dish 43? iiesf in ai distance :RT from the ⁇ aai-istat? rrr-i tation.
  • the revolving? spe'e'd of the liquidon thisspot is iep;
  • ori the repeated mixing off the liquids the?I extractioni resu-lt is improvedl and s'inc'e'- ⁇ iif connection with: an extraction stages: a;Y sharp' sepasadena the intermediate stage's isil less: importantQ- than; ⁇ tlierepeatedfrefe mixing, the cnitput:l off tire-f centnfrugaii machine is increased.
  • the: ⁇ platel paciiagef comprises tliif'e Sets?,I airfrm'er' se a'Ii iiiteirne'diaie" set? 'is' and.A outer? set. 4e? nf. distributing-z cnam nels between" these plate sets.
  • The-t plates'v oi*- the;y intermediate set T13 are several times bent in sucitalma'nne'n that' between adjacent plates arc shaped channels are formed and that the uppcr and lie lower sides of tiieplatesare" alternatively turned" towards?
  • the specifically lighter liquid flows through the inlet pipe 52 into the inlet chamber 54 enclosed by the distributing tube 53, and through lower channels 55 to the vertical distributing channels S.
  • the specifically heavier liquid flows through a pipe concentrical to the inlet pipe 52 and through openings 5l into the inlet chamber 58 and thence into the distributing channels 59.
  • Between the inner and outer distributing channels 59 and 56 respectively, and the intermediate plate set 'i2 are mounted perforated cylinders 69 and 10 by which the mixing of both liquids is improved. After having passed the openings in these cylinders 69 and l0 the liquids ow in countercurrent through the intermediate plate package. Thereafter the specifically heavier liquid hows through the outer plate set 49 and into the chamber 6D at the periphery of the drum, from there through channels ll to the upper discharge chamber 62 from which the liquid escapes out of the drum by means of the stripping disk 63.
  • the specifically lighter liquid flows from the intermediate plate set l2 through the inner plate set 1
  • centrifugaldrum having' a multiple number of spacediepartf-paraller discs; positioned therein at an acute'zangle'to. the axis of rotation of the centrifii'ge'f;Y and: dividing the interior of said drum into multiple liquid flow channels, said discs being2 positioned! to's leave" the centralV and oute'rr portion" theiinterlior of said drum' substantially disc ⁇ -fifee, vsai discs-having an inner andi ar'i outer series of openings collectively' de; lining?? av iif'st andi af second-i liquid?
  • Extraction centrifuge according to claim 1 in which said rst and said second discharge means have liquid engaging portions for the discharge of the liquid so positioned from the axis of rotation of said drum that the centrifugal pressure of the specifically heavier liquid from said second liquid passages is smaller than the centrifugal pressure of the specifically lighter liquid from said first liquid passage.
  • R equals the distance of said second liquid passage from the axis of rotation of the centrifuge
  • RH equals the distance of said rst liquid passage from the axis of rotation of the centrifuge
  • yH equals the specific gravity of the heavier liquid
  • 7L equals the specic gravity of the lighter liquid.
  • said second conduct means is a stationvary feeding pipe and an inlet chamber, said inlet Ichamber being centrally located in said drum, 'said feeding pipe being positioned for passing specifically lighter liquid into said inlet chamber and being sealed with a packing against the wall of said inlet chamber.
  • Extraction centrifuge according to claim 4 in which the liquid engaging portions of said rst and said second discharge means are positioned at such a distance from the axis of rotation of said drum that the centrifugal pressure of the specically heavier liquid from said second liquid passage is smaller than the sum of the centrifugal pressure of the specifically lighter liquid from the axis of rotation of the drum to said second liquid passage plus the pressure with which the specifically lighter liquid is fed to said drum.
  • R is equal to the distance of said second liquid passage from the axis of rotation of the centrifuge;
  • RH equals the distance of said first liquid passage to the axis of rotation of the centrifuge;
  • fyH equals the specific gravity of the heavier liquid;
  • fyL equals the specific gravity of the lighter liquid;
  • p equals the over pressure at which the specifically lighter liquid is fed into the drum.
  • Extraction centrifuge according to claim 1 in which said discs are bent at least once between said rst and said second liquid passage s0 that a portion of both their upper and lower surfaces faces the axis of rotation of the drum.
  • Extraction centrifuge according to claim 10 in which there are restricting means provided on the discs at the bend for restricting the flow channels therebetween.
  • Extraction centrifuge according to claim 1 in which said multiple discs consist of at least one inner, one intermediate, and one outer set of discs, said rst liquid passage being dened between said inner and said intermediate said discs, said second liquid passage being defined between said intermediate and said outer set of discs.
  • Extraction centrifuge according to claim 12 in which said intermediate set of discs are bent at least once so that a portion of both their upper and lower surfaces both face the axis of rotation of the drum.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Centrifugal Separators (AREA)
  • Extraction Or Liquid Replacement (AREA)
US128408A 1948-11-20 1949-11-19 Counter current extraction centrifuge Expired - Lifetime US2665061A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE1948P0022238 DE1153876B (de) 1959-08-25 1948-11-20 Geraet zum Einbringen einer Algen vertilgenden Fluessigkeit an algenbefallenen Stellen eines Schwimm-beckens

Publications (1)

Publication Number Publication Date
US2665061A true US2665061A (en) 1954-01-05

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Family Applications (1)

Application Number Title Priority Date Filing Date
US128408A Expired - Lifetime US2665061A (en) 1948-11-20 1949-11-19 Counter current extraction centrifuge

Country Status (2)

Country Link
US (1) US2665061A (fr)
NL (2) NL145773B (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3133880A (en) * 1959-12-21 1964-05-19 Vernon D Jarvis Centrifugal extractor
US3187998A (en) * 1964-03-31 1965-06-08 Vernon D Jarvis Centrifugal extractor
US3202347A (en) * 1960-05-02 1965-08-24 Benjamin H Thurman Countercurrent flow centrifugal separator
US3231184A (en) * 1963-01-07 1966-01-25 Dresser Ind Liquid contact process and apparatus
US3731800A (en) * 1970-11-27 1973-05-08 Polaroid Corp Counter-current centrifugal device and use
DE2834930A1 (de) * 1977-08-10 1979-02-22 Hitachi Ltd Gegenstrom-extraktionszentrifuge
US20210067000A1 (en) * 2010-08-24 2021-03-04 Qwtip Llc Fluid Separation System and Disk-Pack Turbine

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3053440A (en) * 1959-03-04 1962-09-11 Walter J Podbielniak Rotating separator with distribution and mixing means

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2036924A (en) * 1933-05-19 1936-04-07 Lambiotte Freres Ets Process and apparatus for the continuous extraction or treatment of liquids
US2176982A (en) * 1937-08-06 1939-10-24 Sinclair Refining Co Centrifugal countercurrent contacting machine
US2291849A (en) * 1934-04-18 1942-08-04 Arthur M Hood Counterflow centrifuge and method of treating one liquid with another liquid of different specific gravity

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2036924A (en) * 1933-05-19 1936-04-07 Lambiotte Freres Ets Process and apparatus for the continuous extraction or treatment of liquids
US2291849A (en) * 1934-04-18 1942-08-04 Arthur M Hood Counterflow centrifuge and method of treating one liquid with another liquid of different specific gravity
US2176982A (en) * 1937-08-06 1939-10-24 Sinclair Refining Co Centrifugal countercurrent contacting machine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3133880A (en) * 1959-12-21 1964-05-19 Vernon D Jarvis Centrifugal extractor
US3202347A (en) * 1960-05-02 1965-08-24 Benjamin H Thurman Countercurrent flow centrifugal separator
US3231184A (en) * 1963-01-07 1966-01-25 Dresser Ind Liquid contact process and apparatus
US3187998A (en) * 1964-03-31 1965-06-08 Vernon D Jarvis Centrifugal extractor
US3731800A (en) * 1970-11-27 1973-05-08 Polaroid Corp Counter-current centrifugal device and use
DE2834930A1 (de) * 1977-08-10 1979-02-22 Hitachi Ltd Gegenstrom-extraktionszentrifuge
US20210067000A1 (en) * 2010-08-24 2021-03-04 Qwtip Llc Fluid Separation System and Disk-Pack Turbine

Also Published As

Publication number Publication date
NL145773B (nl)
NL75469C (fr)

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