GB682675A - A method of and means for solidifying films of liquid materials - Google Patents

A method of and means for solidifying films of liquid materials

Info

Publication number
GB682675A
GB682675A GB2128949A GB2128949A GB682675A GB 682675 A GB682675 A GB 682675A GB 2128949 A GB2128949 A GB 2128949A GB 2128949 A GB2128949 A GB 2128949A GB 682675 A GB682675 A GB 682675A
Authority
GB
United Kingdom
Prior art keywords
infra
liquid
belt
film
red
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
GB2128949A
Inventor
James Arthur Reavell
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.)
Kestner Evaporator & Engineeri
Original Assignee
Kestner Evaporator & Engineeri
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 Kestner Evaporator & Engineeri filed Critical Kestner Evaporator & Engineeri
Priority to GB2128949A priority Critical patent/GB682675A/en
Publication of GB682675A publication Critical patent/GB682675A/en
Expired legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
    • F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
    • F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
    • F26B11/0463—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall
    • F26B11/0477—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall for mixing, stirring or conveying the materials to be dried, e.g. mounted to the wall, rotating with the drum
    • F26B11/0486—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having internal elements, e.g. which are being moved or rotated by means other than the rotating drum wall for mixing, stirring or conveying the materials to be dried, e.g. mounted to the wall, rotating with the drum the elements being held stationary, e.g. internal scraper blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
    • F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
    • F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
    • F26B11/0495—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis with provisions for drying by electro-magnetic means, e.g. radiation, microwaves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/02—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces
    • F26B17/023—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by belts carrying the materials; with movement performed by belts or elements attached to endless belts or chains propelling the materials over stationary surfaces the material being a slurry or paste, which adheres to a moving belt-like endless conveyor for drying thereon, from which it may be removed in dried state, e.g. by scrapers, brushes or vibration
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/28—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rollers or discs with material passing over or between them, e.g. suction drum, sieve, the axis of rotation being in fixed position
    • F26B17/284—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by rollers or discs with material passing over or between them, e.g. suction drum, sieve, the axis of rotation being in fixed position the materials being dried on the non-perforated surface of heated rollers or drums
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/28—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun
    • F26B3/30—Drying solid materials or objects by processes involving the application of heat by radiation, e.g. from the sun from infrared-emitting elements

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)

Abstract

Solutions of heat-sensitive solids are evaporated to dryness by spreading the solution as a film upon a continuously moving surface made of glass, quartz, a fabric impregnated with a silicone resin, or made of any other material having a poor heat-conducting characteristic whilst being permeable to infra-red radiation, and impinging infra-red radiation directly on the film and/or passing infra-red radiation through the moving surface. A rise in temperature of the moving surface <PICT:0682675/III/1> <PICT:0682675/III/2> is substantially obviated, and consequently no heat is transmitted to the film by conduction. The production of solid gelatine and agar-agar, is ferred to. The invention may also be applied to obtain synthetic plastics and other materials which are produced by solidification of liquid mixtures by chemical change effected by heat. In Fig. 3, the external surface of a rotating drum is sprayed with liquid from arcuate plate 18 which is fed through pipe 19, and the internal surface is coated with liquid from the lip of trough 21 which is fed through pipes 22. Both films of liquid are irradiated by infra-red generators 4 and 6. The solidified material is removed from the external surface of the drum by brush 20, and collected on belt conveyer 26, while the solid is removed from the internal surface by brush 23, collected in trough 24, and discharged from the drum on to belt conveyer 27 by means of conveyer screw 25. In Fig. 5, the upper horizontal stretch of belt 33, which is made of woven glass or asbestos fibre impregnated with a silicone resin and is driven by rotating drums 34, passes between infra-red generators 36 and 38. The upper surface of the belt is coated with a film of liquid from trough 8. The solid is removed from the belt either by brush 20 or by suction duct 40. The apparatus may be enclosed within a chamber 52 which is evacuated through conduit 53. An embodiment is also described wherein both the outer and the inner surfaces of a travelling belt are coated with films of liquid. The infra-red generators may be tungsten or carbon filaments, electrically-heated platinum or other resistance wires wound on ceramic tubes, or steel or silica vessels through which hot fused salts, oil, or mercury vapour, is passed.
GB2128949A 1949-08-16 1949-08-16 A method of and means for solidifying films of liquid materials Expired GB682675A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2128949A GB682675A (en) 1949-08-16 1949-08-16 A method of and means for solidifying films of liquid materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2128949A GB682675A (en) 1949-08-16 1949-08-16 A method of and means for solidifying films of liquid materials

Publications (1)

Publication Number Publication Date
GB682675A true GB682675A (en) 1952-11-12

Family

ID=10160364

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2128949A Expired GB682675A (en) 1949-08-16 1949-08-16 A method of and means for solidifying films of liquid materials

Country Status (1)

Country Link
GB (1) GB682675A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0761572A2 (en) * 1995-08-25 1997-03-12 VENJAKOB MASCHINENBAU GmbH &amp; Co.KG Apparatus for spraying a coating material on the surface of an object
WO2013011363A1 (en) * 2011-07-20 2013-01-24 P.T.I. Drying device for drying substances suspended or dissolved in a liquid

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0761572A2 (en) * 1995-08-25 1997-03-12 VENJAKOB MASCHINENBAU GmbH &amp; Co.KG Apparatus for spraying a coating material on the surface of an object
EP0761572A3 (en) * 1995-08-25 1998-05-06 VENJAKOB MASCHINENBAU GmbH &amp; Co.KG Apparatus for spraying a coating material on the surface of an object
WO2013011363A1 (en) * 2011-07-20 2013-01-24 P.T.I. Drying device for drying substances suspended or dissolved in a liquid
BE1020125A3 (en) * 2011-07-20 2013-05-07 P T I DRYING DEVICE FOR DRYING SUBSTANCES SUSPENDED OR SOLVED IN A LIQUID.

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