GB892220A - Improvements relating to drying chambers - Google Patents

Improvements relating to drying chambers

Info

Publication number
GB892220A
GB892220A GB2387458A GB2387458A GB892220A GB 892220 A GB892220 A GB 892220A GB 2387458 A GB2387458 A GB 2387458A GB 2387458 A GB2387458 A GB 2387458A GB 892220 A GB892220 A GB 892220A
Authority
GB
United Kingdom
Prior art keywords
chambers
air
flow
velocity
dried
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
GB2387458A
Inventor
Hugh David Anderson
Alexander Herbert Wright
Leendert Ijsselstein
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.)
British American Tobacco Investments Ltd
Original Assignee
British American Tobacco Co 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
Application filed by British American Tobacco Co Ltd filed Critical British American Tobacco Co Ltd
Priority to GB2387458A priority Critical patent/GB892220A/en
Priority to BE581015A priority patent/BE581015A/en
Publication of GB892220A publication Critical patent/GB892220A/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
    • F26B17/00—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement
    • F26B17/10—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers
    • F26B17/101—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers the drying enclosure having the shape of one or a plurality of shafts or ducts, e.g. with substantially straight and vertical axis

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

892,220. Drying systems. BRITISH-AMERICAN TOBACCO CO. Ltd. July 15, 1959 [July 24, 1958], No. 23874/58. Class 34(2) Loose material such as sawdust, woodchips, granular and fibrous materials, is dried in a pneumatic drying system comprising vertically arranged diverging-converging drying chambers 6, 7. The moist material is fed to the hot air stream through a rotary air-lock valve 5 whilst the dried product is discharged from a cyclone separator 8 via a further rotary air-lock valve. The dust-laden air from the separator 8 passes to a cyclone separator 9 from which the cleansed air is withdrawn by a fan 1 for either discharge to atmosphere or recirculation via ducting 3. Each of the chambers 6, 7 is so proportioned that the velocity of air flow may be adjusted such that the flow in the chamber is insufficient to overcome the force of gravity on denser portions of the material, so that such portions will lose their initial upward velocity before reaching the top of the chamber and will sink back in the outer part thereof and execute a circulatory motion therein until their density has lessened. The chambers are also so proportioned relative to the associated ducting of the system that the velocity of flow in the chambers is substantially lower than that obtaining in the rest of the system. If the dried material is to be cooled, the chambers 6, 7 may be followed by one or more chambers having cooling means and of a similar construction to the chambers 6, 7, into which jets of cold air may be introduced to impart a helical motion to the material. The chambers 6, 7 may incorporate jets for the introduction of additional hot air to give the material a helical motion. Specification 875,684 is referred to.
GB2387458A 1958-07-24 1958-07-24 Improvements relating to drying chambers Expired GB892220A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB2387458A GB892220A (en) 1958-07-24 1958-07-24 Improvements relating to drying chambers
BE581015A BE581015A (en) 1958-07-24 1959-07-24 Improvements relating to drying chambers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2387458A GB892220A (en) 1958-07-24 1958-07-24 Improvements relating to drying chambers

Publications (1)

Publication Number Publication Date
GB892220A true GB892220A (en) 1962-03-21

Family

ID=10202710

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2387458A Expired GB892220A (en) 1958-07-24 1958-07-24 Improvements relating to drying chambers

Country Status (2)

Country Link
BE (1) BE581015A (en)
GB (1) GB892220A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2393501A (en) * 2001-10-30 2004-03-31 Weyerhaeuser Co Dried singulated pulp fibres

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2393501A (en) * 2001-10-30 2004-03-31 Weyerhaeuser Co Dried singulated pulp fibres

Also Published As

Publication number Publication date
BE581015A (en) 1959-11-16

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