US2875823A - Apparatus for converting liquids, solutions, emulsions, suspensions, and the like int dry powders - Google Patents

Apparatus for converting liquids, solutions, emulsions, suspensions, and the like int dry powders Download PDF

Info

Publication number
US2875823A
US2875823A US476796A US47679654A US2875823A US 2875823 A US2875823 A US 2875823A US 476796 A US476796 A US 476796A US 47679654 A US47679654 A US 47679654A US 2875823 A US2875823 A US 2875823A
Authority
US
United States
Prior art keywords
cup
casing
conduit
gas
atomizer
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 - Lifetime
Application number
US476796A
Other languages
English (en)
Inventor
Stam Martinus Joannes
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.)
Rubber Latex Poeder Cie N V
Rubber-Latex-Poeder-Compagnie N V
Original Assignee
Rubber Latex Poeder Cie N V
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 Rubber Latex Poeder Cie N V filed Critical Rubber Latex Poeder Cie N V
Application granted granted Critical
Publication of US2875823A publication Critical patent/US2875823A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D1/00—Evaporating
    • B01D1/16—Evaporating by spraying
    • B01D1/18—Evaporating by spraying to obtain dry solids
    • A—HUMAN NECESSITIES
    • A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
    • A23C—DAIRY PRODUCTS, e.g. MILK, BUTTER OR CHEESE; MILK OR CHEESE SUBSTITUTES; PREPARATION THEREOF
    • A23C1/00—Concentration, evaporation or drying
    • A23C1/04—Concentration, evaporation or drying by spraying into a gas stream
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08C—TREATMENT OR CHEMICAL MODIFICATION OF RUBBERS
    • C08C1/00—Treatment of rubber latex
    • C08C1/02—Chemical or physical treatment of rubber latex before or during concentration
    • C08C1/075—Concentrating
    • C08C1/12—Concentrating by evaporation

Definitions

  • My invention relates to an apparatus for converting liquids, solutions, emulsions, suspensions and like media into dry powders. I It is an object of this invention to improve such apparatus so that an extremely fine dry powder with a great uniformity of particle size is obtained. It is a further object of this invention to attain the above object with a simple and reliable apparatus.
  • a cup-shaped atomizer 1 is carried by a driving shaft. 2, which is connected to the atomizer by a square head 3 engaging in a square hole in the bottom of the atomizer.
  • the atomizer 1 is rotatable by shaft 2about a vertical axis and is shaped as a body of revolution generated around said axis. It has an open top, a sharp upper rim 4 about said open top, a substantially hemispherical closed bottom portion 5 and conical part 6 widening upwardly and connecting the bottom portion-5 While, continuously changing into said portion to the upper rim 4.
  • the depth of the atomizer 1 is larger than the diameter of the said rim 4.
  • a stationary vertical supply conduit 7 for medium to be atomized is positioned-with its axis in the axis 'of rotation of'the atomizercup 1.
  • Said conduit 7 is' open at top and bottom ends has atits top an internal fairing 8 constituted by two cones with joined bases and sup ported in the upper conicalpart of the conduit by struts supporting the lower cone.
  • the conduit 7 extends downwards into the atomizer cup 1 to a' short distance from the bottom thereof.
  • the con-' duit 7 is provided with a guiding member 9 shaped as a body of revolution about the vertical axis of the con-. duit 7 and filling the space in the top surface of the atomizer cup so that a small annular space is left between the rim 4'and this guiding member.
  • Said guiding member is secured 'to the conduit 7 and its shape in vertical cross-section is about a downwardly widening hyperboloid in the upper part and a spherical lower part, joined together at their largest diameter, as will be clear from the drawing.
  • the atomizer cup 1 is provided on its outer surface in the proximity of the rim 4 but a short distance below g conduit 7 for the liquid medium. Its flanged end is bolted struts 16 in the lower part of said elbow 13 support the said slot opening from the cup into the interior of said casing and through which slot said medium is dischargeable from the cup into the casing, when said medium atomized, and a gas conduit formed around said open cup top, said narrow annular slot opening into said conduit also, and which conduit'is of a narrowest cross'sectional area in the vicinity of said open cup top and gradually increases in cross sectional area from said narrow annular slot to attain the cross sectional area of said discharge tube.
  • the gas conduit will of course be made I to guide a suitable drying gas such as hot air.
  • Figure 1 shows a vertical cross-section of the apparatus according tothe invention.
  • Figure 2 is a horizontal cross -sectionof the above drier apparatus along the line IIII in Figure 1.
  • conduit 7 so that when mounting or removing the elbow 13 the conduit 7 with guiding member 9 is simultaneously mounted and removed respectively.
  • Said vertical gas conduit 15 diverges downwardly in 7 its lower part 17 and so passes into a part 18 in the shape of the lower half of a torus with acircular crosssection and symmetrical about the vertical axis of conduit 7, conduit 15 and atomizer cup 1.
  • the outer side of said toroidal part 18 changes into a vertical cylindrical wall 19, continuing in an outwardly extending wall 20, which latter at its outer periphery changes into a downwardly directed cylindrical wall 21 terminating in a flange 22.
  • the wall part 20 is not situated in a plane perpendicular to the vertical axis. of the cup 1, etc., but
  • casing'lpar't'28 extends inwardly towards the cup 1 below theblades" 10 thereon and is bent downwardly' below said blades to change into a downwardly extending cylindrical duct 31 openat its lower end. Between said duct .31 and the cup 1 there is left a small annular gap 32.
  • a g'uiding wall 33 is rovided between top and bottom of the'casing' in the narrowest part 23 thereof. Said wall 33 is secured, e. g by welding, to the lower casing art 28 with its lower edge; Its upper edge has a shape so that it almost contacts the upper ca's'ing part along the walls 21, 20, 19' and 18 thereof.
  • the wall 33 is generated bystra'ight vertical lines and its shape" in a horizontal direction clearly appears from FigureiZ of the drawings.
  • Drying gas e. g
  • hot air is introduced through gas supply conduit 11 and flows through elbow 13 'down throughvertical gas conduit 15.
  • the guidin member 9 guides the gas outwardly within the lower part 17 of gas conduit 15, so that the gas flows downwards and radially outwards as a small annulus through the narrow or rotation .of cup 1 is chosen so high'that an extremely thin him of said medium is formed in the cup' 1. Said flows upwards in the cup and leaves it at the sharp upper rim 4,-where it flows almost exactly radially outward's into the narrow, annular slot 34.
  • the drying gas which flows almost without rotation in inlet conduit 11, caused to rotate in Vertical gas conduit 15 by the action of the blades 10 on the cup 1 and by the fact thatithe' gas leaving'the apparatus flows through volute gages'the liquid film projected outwardly from rim 4' while substantially flowing in the-same direction as said him, said film flowing horizontally outwards and said gas flowing at an angle of about 40 to the horizontal.
  • the guidingm'ember 9 not only guides the drying 'ga s but also prevents it from flowing into the atomizer cup 1, so that premature drying of the liquid film in-said cup by said gas is prevented;
  • the guiding wall 33 prevents powder, which is not yet entirely dry, to escape to the outlet 24, 26. To this end said guiding wall 33 causes gas and liquid film, being transferred to powder, in that part of the periphery of the narrow annular slot-34' which is close to the outlet 24, 26, to pass through the entire volute passage 27 in the casing before leaving the apparatus through the outlet 24, 26.
  • the liquid medium is a solution, suspension or the like
  • the liquid constituent which is not transferred into powder such as the solvent or the water in a suspension or emulsion is vaporized and discharged together with the gas.
  • the gas flow not only prevents the liquid particles from sticking together, but also prevents said particles from reaching the wall of the lower part 17 of vertical conduit 15.
  • the supply of gas, the action of blades 9 and the shape of the apparatus is such that the gas has a sufliciently high speed in the narrow annular slot 34 to prevent this.
  • the gas speed isequal to or higherthan the speed of the liquid particles in their zone of first contact.
  • V ppm 1 In an apparatus for converting liquids, solutions, emulsions, suspensions and the like media into drypow: ders, the combination of an annular casing, a discha'rge tube on the perimeter of said casing, atomizer centrally disposed in said casing and comprising a v'er tically positioned rotatably mounted cup havingan open top and located in the center of said annular casing, the: said cup having a substantially concave closedbottorn portion, and substantially straight conical walls interme ⁇ diate the open top and the closed bottom portion, said open top having a diameter larger than said bottom portion and smaller than the depth of the cup, a' sha'ft for rotating said cup about its central axis, a' supply con; duit for the medium to be atomized coaxial with said shaft and entering the open top of said cup to terminate: short of said cup bottom portion, guiding means in the center'of said annular casing and spaced above said clip rim to form a first narrow
  • atomizer means centrally disposed in said casing and comprising a vertically positioned rotatably mounted cup having an open top and located in the center of said annular casing, the said cup having a substantially concave closed bottom portion and substantially straight conical walls intermediate the open top and the closed bottom portion with said open top having a diameter larger than said bottom portion and smaller than the depth of the cup, a shaft for rotating said cup about its central axis, a supply conduit for the medium to be atomized coaxial with said shaft and entering the open top of said cup to terminate short of said cup bottom portion, guiding means in said annular casing above said rotat
  • said cup having a substantially concave closed bottom portion and substantially straight conical walls intermediate the open top and the closed bottom portion with said open top having a diameter larger than said bottom portion and smaller than the depth of the cup, a shaft for rotating said cup about its central axis, a supply conduit for the medium to be atomized coaxial with said shaft and entering the open top of said cup to terminate short of said cup bottom portion, a substantially conical guiding member having its apex above said cup and opening outwardly toward the direction of said cup to terminate short of said cup rim to form a first narrow annular slot therewith which slot opens into said casing, and a gas conduit within the center of said annular casing and flaring outwardly just outside of said cup rim and said guiding means to form a second narrow annular slot with said guiding means for the passage of gases from said conduit into said casing whereby said first narrow annular slot opens into said gas conduit and said second slot so that atomized liquid thrown out of said cup over the rim thereof is discharged through said second narrow slot into said

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Polymers & Plastics (AREA)
  • General Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Nozzles (AREA)
US476796A 1953-12-28 1954-12-21 Apparatus for converting liquids, solutions, emulsions, suspensions, and the like int dry powders Expired - Lifetime US2875823A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2875823X 1953-12-28

Publications (1)

Publication Number Publication Date
US2875823A true US2875823A (en) 1959-03-03

Family

ID=19876128

Family Applications (1)

Application Number Title Priority Date Filing Date
US476796A Expired - Lifetime US2875823A (en) 1953-12-28 1954-12-21 Apparatus for converting liquids, solutions, emulsions, suspensions, and the like int dry powders

Country Status (3)

Country Link
US (1) US2875823A (da)
DE (1) DE1037373B (da)
NL (2) NL89237C (da)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2728288A4 (en) * 2012-04-19 2015-05-20 Urishbay Chomanov spray dryer

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK155965C (da) * 1970-06-13 1989-11-13 Morinaga Milk Industry Co Ltd Forstoevningstoerreapparat

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1330218A (en) * 1917-05-21 1920-02-10 Rieber Lab Apparatus for nebulizing liquids
US1636317A (en) * 1924-07-25 1927-07-19 Nyrop Aage Apparatus for atomizing liquids
US1796982A (en) * 1926-10-29 1931-03-17 Samuel C Cutler Air-moistening device
US1853682A (en) * 1927-05-18 1932-04-12 Chemical Construction Corp Atomizing apparatus
US1952308A (en) * 1931-11-25 1934-03-27 Bowen William Spencer Fluid treating device
US2002252A (en) * 1931-01-23 1935-05-21 Stam Martinus Joannes Apparatus for the converting of milky liquids, solutions, dispersions, and emulsions into powder form by drying
US2047699A (en) * 1934-02-05 1936-07-14 Harold L Periman Spraying apparatus for liquid and semiliquid material
US2415527A (en) * 1942-07-03 1947-02-11 Golden State Company Ltd Method of atomizing and desiccating substances and apparatus therefor

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE489988C (de) * 1930-01-24 Metallgesellschaft Ag Umlaufende Zerstaeubungsscheibe mit Vertiefung zur Aufnahme der zu zerstaeubenden Fluessigkeit o. dgl.
DK38033C (da) * 1926-05-10 1927-10-10 Niro Atomizer As Apparat til Forstøvning og Tørring af Vædsker.
GB306009A (en) * 1927-10-14 1929-02-14 James Arthur Reavell Improvements in or relating to spray drying plants
DE680167C (de) * 1933-12-03 1939-08-23 Carl Saacke Oelfeuerung OElbrenner mit liegend angeordnetem, umlaufendem, trichterfoermigen, innen glattem Zerstaeubungsbecher
DE748698C (de) * 1938-06-28 1944-11-08 Zahn & Co Anlage zur Zerstaeubungstrocknung von Fluessigkeiten, Suspensionen u. dgl.
DE733017C (de) * 1939-01-03 1943-03-17 Metallgesellschaft Ag Umlaufende Zerstaeuberglocke fuer Zerstaeubungstrocknung
DE744685C (de) * 1942-01-03 1944-01-28 Zahn & Co Verfahren und Vorrichtung zur Zerstaeubungstrocknung
US2634512A (en) * 1948-09-23 1953-04-14 Baker Perkins Inc Drier

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1330218A (en) * 1917-05-21 1920-02-10 Rieber Lab Apparatus for nebulizing liquids
US1636317A (en) * 1924-07-25 1927-07-19 Nyrop Aage Apparatus for atomizing liquids
US1796982A (en) * 1926-10-29 1931-03-17 Samuel C Cutler Air-moistening device
US1853682A (en) * 1927-05-18 1932-04-12 Chemical Construction Corp Atomizing apparatus
US2002252A (en) * 1931-01-23 1935-05-21 Stam Martinus Joannes Apparatus for the converting of milky liquids, solutions, dispersions, and emulsions into powder form by drying
US1952308A (en) * 1931-11-25 1934-03-27 Bowen William Spencer Fluid treating device
US2047699A (en) * 1934-02-05 1936-07-14 Harold L Periman Spraying apparatus for liquid and semiliquid material
US2415527A (en) * 1942-07-03 1947-02-11 Golden State Company Ltd Method of atomizing and desiccating substances and apparatus therefor

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2728288A4 (en) * 2012-04-19 2015-05-20 Urishbay Chomanov spray dryer

Also Published As

Publication number Publication date
DE1037373B (de) 1958-08-21
NL89237C (da)
NL91176C (da)

Similar Documents

Publication Publication Date Title
US1853682A (en) Atomizing apparatus
US2413420A (en) Method and apparatus for dispersing or drying fluent material in high velocity elastic fluid jets
US3009826A (en) Process of forming a dispersion of aerosol particles and process for coating solid particles with said dispersion
US2768707A (en) Separator for use with vacuum cleaning
US2193479A (en) Centrifugal air cleaner
US2743914A (en) Gas-liquid mixing apparatus
KR890003447B1 (ko) 공정가스 도입장치
US3421692A (en) Method of atomizing liquids in a mono-dispersed spray
JPH0483545A (ja) 粉粒体分級装置
US2875823A (en) Apparatus for converting liquids, solutions, emulsions, suspensions, and the like int dry powders
US2287795A (en) Mechanism for removing moisture from liquid products
US3501802A (en) Method and apparatus for producing metal powders
JPH0525717Y2 (da)
US2584424A (en) Method and apparatus for treating
US2661195A (en) Method and apparatus for atomizing liquids
US1939364A (en) Centrifugal atomizer
US2560874A (en) Centrifugal air cleaner
CN207379703U (zh) 风洞用示踪粒子的分离筛选装置
US3472201A (en) Centrifugal coating apparatus for coating interior surfaces of bodies
US2415527A (en) Method of atomizing and desiccating substances and apparatus therefor
US2791409A (en) Carburetors
US2702632A (en) Particle classification
US2002252A (en) Apparatus for the converting of milky liquids, solutions, dispersions, and emulsions into powder form by drying
US2668079A (en) Directional atomization
US1630412A (en) Centrifugal machine