GB819643A - Method and apparatus for spray-drying solutions, dispersions and emulsions - Google Patents

Method and apparatus for spray-drying solutions, dispersions and emulsions

Info

Publication number
GB819643A
GB819643A GB34597/55A GB3459755A GB819643A GB 819643 A GB819643 A GB 819643A GB 34597/55 A GB34597/55 A GB 34597/55A GB 3459755 A GB3459755 A GB 3459755A GB 819643 A GB819643 A GB 819643A
Authority
GB
United Kingdom
Prior art keywords
disc
drying
gas
liquid
sprayed
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.)
Expired
Application number
GB34597/55A
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.)
Luwa Ltd
Original Assignee
Luwa Ltd
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 to CH819643X priority Critical
Application filed by Luwa Ltd filed Critical Luwa Ltd
Publication of GB819643A publication Critical patent/GB819643A/en
Expired legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B08CLEANING
    • B08BCLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
    • B08B17/00Methods preventing fouling
    • B08B17/02Preventing deposition of fouling or of dust
    • AHUMAN NECESSITIES
    • A23FOODS OR FOODSTUFFS; THEIR TREATMENT, NOT COVERED BY OTHER CLASSES
    • A23CDAIRY PRODUCTS, e.g. MILK, BUTTER, CHEESE; MILK OR CHEESE SUBSTITUTES; MAKING THEREOF
    • A23C1/00Concentration, evaporation or drying
    • A23C1/04Concentration, evaporation or drying by spraying into a gas stream
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D1/00Evaporating
    • B01D1/16Evaporating by spraying
    • B01D1/20Sprayers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING, DISPERSING
    • B01F15/00Accessories for mixers ; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F15/00019Washing or cleaning mixers, e.g. using knockers or scrapers; Inhibiting build-up of material on machine parts
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B15/00Details of spraying plant or spraying apparatus not otherwise provided for; Accessories
    • B05B15/50Arrangements for cleaning; Arrangements for preventing deposits, drying-out or blockage; Arrangements for detecting improper discharge caused by the presence of foreign matter
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements ; Spraying or sprinkling heads with rotating elements located upstream the outlet
    • B05B3/02Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements ; Spraying or sprinkling heads with rotating elements located upstream the outlet with rotating elements
    • B05B3/10Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements ; Spraying or sprinkling heads with rotating elements located upstream the outlet with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces
    • B05B3/1007Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements ; Spraying or sprinkling heads with rotating elements located upstream the outlet with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces characterised by the rotating member
    • B05B3/1021Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements ; Spraying or sprinkling heads with rotating elements located upstream the outlet with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces characterised by the rotating member with individual passages at its periphery
    • B05B3/1028Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements ; Spraying or sprinkling heads with rotating elements located upstream the outlet with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces characterised by the rotating member with individual passages at its periphery the passages comprising an insert
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements ; Spraying or sprinkling heads with rotating elements located upstream the outlet
    • B05B3/02Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements ; Spraying or sprinkling heads with rotating elements located upstream the outlet with rotating elements
    • B05B3/10Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements ; Spraying or sprinkling heads with rotating elements located upstream the outlet with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces
    • B05B3/1057Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements ; Spraying or sprinkling heads with rotating elements located upstream the outlet with rotating elements discharging over substantially the whole periphery of the rotating member, i.e. the spraying being effected by centrifugal forces with at least two outlets, other than gas and cleaning fluid outlets, for discharging, selectively or not, different or identical liquids or other fluent materials on the rotating element
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
    • F24F6/00Air-humidification, e.g. cooling by humidification
    • F24F6/02Air-humidification, e.g. cooling by humidification by evaporation of water in the air
    • F24F6/06Air-humidification, e.g. cooling by humidification by evaporation of water in the air using moving unheated wet elements
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B05SPRAYING OR ATOMISING IN GENERAL; APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05BSPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B3/00Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements ; Spraying or sprinkling heads with rotating elements located upstream the outlet
    • B05B3/001Spraying or sprinkling apparatus with moving outlet elements or moving deflecting elements ; Spraying or sprinkling heads with rotating elements located upstream the outlet incorporating means for heating or cooling, e.g. the material to be sprayed
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S159/00Concentrating evaporators
    • Y10S159/09Two liquids dried simultaneously

Abstract

819,643. Spray evaporators; drying milk. LUWA A.G. Dec. 2, 1955 [Dec. 11, 1954], No. 34597/55. Class 32. [Also in Group XXIX] In a method of spray drying wherein a solution, dispersion or emulsion, comprising a. volatile liquid and a non-volatile constituent, is sprayed into a drying chamber, the deposition of the non-volatile constituent on the spraying device is obviated by supplying, to those parts of the device on which such deposition is liable to occur, a mixture of a gas and the vapour of a volatile liquid which prevents evaporation of the volatile liquid from the substance being sprayed at those particular parts of the device. In drying milk, the " blocking gas " is a mixture of air and water-vapour. The spraying device shown has a disc 20 mounted on shaft 10 which rotates in bearing 11. The bearing is mounted in supports connected with tube 15 which is fixed in the wall 15a of the drying chamber. The oil used for lubricating the bearing is guided by splash-ring 27 into an oil sump formed in bearing support 13, from which it is discharged through a conduit (not shown). The liquid to be sprayed is conveyed through a conduit (not shown) to annular duct 24, from which it passes through two small tubes 24a to the disc 20. This disc has an upstanding rim which forms a shallow well, the top of which is partly closed by annular plate 23. The liquid discharged from tubes 24a spreads along the bottom of the well in the rotating disc, and is sprayed out into the drying chamber through radial openings 21 in the rim of the disc. Hot gas flows through the drying chamber in either the same direction or the opposite direction to the sprayed liquid. In a specific example, milk is dehydrated using air at 140 ‹ C. as drying gas. In order to avoid incrustation in the space 19 between the rotating disc and the fixed plate 18, it is arranged that air containing water-vapour, at a temperature of about 50‹ C., flows continuously through the space. This is achieved by supplying air and water-vapour through conduits 14 and 26, respectively, to mixing chamber 16, from which the mixed gas flows through openings 17 into the space 19. The blocking gas flows from space 19 under a flange at the end of tube 15 into the drying chamber, the rotation of the gas being prevented by vanes 18a on the side of plate 18 facing the disc. The end of tube 15 may be made to project somewhat beyond the rim of disc 20 so as to approach the nozzle openings 21 as closely as possible ; blocking gas flowing out of space 19 can thus be brought into the immediate vicinity of the nozzles without being diluted by drying gas. In another embodiment, three currents of blocking gas are passed to the rotating disc, one of them being supplied via a bore-channel in the shaft. A rotating disc provided with radial blades may be used for spraying the liquid. A fixed spraying nozzle may also be used.
GB34597/55A 1954-12-11 1955-12-02 Method and apparatus for spray-drying solutions, dispersions and emulsions Expired GB819643A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH819643X 1954-12-11

Publications (1)

Publication Number Publication Date
GB819643A true GB819643A (en) 1959-09-09

Family

ID=4539283

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34597/55A Expired GB819643A (en) 1954-12-11 1955-12-02 Method and apparatus for spray-drying solutions, dispersions and emulsions

Country Status (5)

Country Link
US (1) US2889873A (en)
CH (1) CH336753A (en)
DE (1) DE1110087B (en)
GB (1) GB819643A (en)
NL (1) NL108207C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4337895A (en) * 1980-03-17 1982-07-06 Thomas Gallen High speed rotary atomizers

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK117820B (en) * 1965-03-26 1970-06-01 Atomizer N Ak An atomizer wheel for atomizing slurries of highly abrasive materials.
USRE29083E (en) * 1965-03-26 1976-12-21 Aktieselskabet Niro Atomizer Atomizer wheel for the atomization of suspensions of hard-wearing materials
DK132161B (en) * 1972-08-29 1975-11-03 Niro Atomizer As A process for producing by spray powder from liquids of the type which by spray drying tend to give a voluminous powder, and the nebulizer for use in the practice of the method.
US4141783A (en) * 1972-08-29 1979-02-27 Aktieselskabet Niro Atomizer Spray drying atomizer wheel
US4082221A (en) * 1974-08-28 1978-04-04 Stork Amsterdam B.V. Rotatable atomizer for spraying a liquid
NL7411475A (en) * 1974-08-28 1976-03-02 Stork Amsterdam A rotary atomiser for a squirt of liquid.
DK88080A (en) * 1980-02-29 1981-08-30 Niro Atomizer As Procedure for preventing the undesign marketing of incidental liquids in the area between a rotating and nearing stations part by a move wheel in a surface preparation and alternating system
JPH0641603Y2 (en) * 1990-03-08 1994-11-02 株式会社坂本技研 Spray dryer
US20060219816A1 (en) * 2005-04-05 2006-10-05 Durr Systems Rotary atomizer component
DE102005044154B4 (en) * 2005-09-15 2007-09-27 Dürr Systems GmbH Rotationszerstäuberbauteil

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1634640A (en) * 1927-07-05 Spbay pbocessing appabatxts
US2367770A (en) * 1938-12-08 1945-01-23 Drying & Concentrating Company Apparatus for removing moisture from liquid products
FR882189A (en) * 1941-05-20 1943-05-20 Deutsche Waffen & Munitionsfab A spray nozzle
BE488281A (en) * 1946-04-09
DE847578C (en) * 1947-04-10 1952-08-25 Carl Andermatt Means of storage of high-speed Zerstaeuberscheibenwellen, particularly for dryer
US2584973A (en) * 1947-04-10 1952-02-12 Luwa S A Cooling and sealing means for disk atomizer shafts
DE825379C (en) * 1948-11-26 1951-12-17 Emil Kirschbaum Dr Ing atomizing nozzle
DE857924C (en) * 1949-06-03 1952-12-04 Emil Dr-Ing Kirschbaum atomizing nozzle

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4337895A (en) * 1980-03-17 1982-07-06 Thomas Gallen High speed rotary atomizers

Also Published As

Publication number Publication date
DE1110087B (en) 1961-06-29
CH336753A (en) 1959-02-28
US2889873A (en) 1959-06-09
NL108207C (en) 1900-01-01

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