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GB839535A - Improvements in or relating to the drying of finely divided material - Google Patents

Improvements in or relating to the drying of finely divided material

Info

Publication number
GB839535A
GB839535A GB40231/58A GB4023158A GB839535A GB 839535 A GB839535 A GB 839535A GB 40231/58 A GB40231/58 A GB 40231/58A GB 4023158 A GB4023158 A GB 4023158A GB 839535 A GB839535 A GB 839535A
Authority
GB
United Kingdom
Prior art keywords
coal
shelf
duct
tower
drying
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
GB40231/58A
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.)
NELSON LOUIS DAVIS
Original Assignee
NELSON LOUIS DAVIS
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 NELSON LOUIS DAVIS filed Critical NELSON LOUIS DAVIS
Publication of GB839535A publication Critical patent/GB839535A/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
    • F26B17/12—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft
    • F26B17/122—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the material moving through a cross-flow of drying gas; the drying enclosure, e.g. shaft, consisting of substantially vertical, perforated walls
    • F26B17/126—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the material moving through a cross-flow of drying gas; the drying enclosure, e.g. shaft, consisting of substantially vertical, perforated walls the vertical walls consisting of baffles, e.g. in louvre-arrangement
    • 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
    • F26B17/001—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement the material moving down superimposed floors
    • F26B17/003—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement the material moving down superimposed floors with fixed floors provided with scrapers
    • 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
    • F26B17/12—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft
    • F26B17/14—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas
    • F26B17/1433—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas the drying enclosure, e.g. shaft, having internal members or bodies for guiding, mixing or agitating the material, e.g. imposing a zig-zag movement onto the material
    • F26B17/1441—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas the drying enclosure, e.g. shaft, having internal members or bodies for guiding, mixing or agitating the material, e.g. imposing a zig-zag movement onto the material the members or bodies being stationary, e.g. fixed panels, baffles, grids, the position of which may be adjustable
    • F26B17/145—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed solely by gravity, i.e. the material moving through a substantially vertical drying enclosure, e.g. shaft the materials moving through a counter-current of gas the drying enclosure, e.g. shaft, having internal members or bodies for guiding, mixing or agitating the material, e.g. imposing a zig-zag movement onto the material the members or bodies being stationary, e.g. fixed panels, baffles, grids, the position of which may be adjustable consisting of non-perforated panels or baffles

Landscapes

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

Abstract

839,535. Drying powdered coal &c. DAVIES, N. L. Dec. 12, 1958 [Dec. 12, 1957], No. 40231/58. Class 34(2) A method of drying finely-divided coal &c. consists in exposing it to hot dry gas first in a preheating zone in which the surface moisture is heated close to its B.P. and then in a drying zone in which the surface moisture is flashed off as vapour. The coal may be treated in a tower having a preheating zone with annular shelves 32, 34, 36, Fig. 2, supported on radial brackets carried by an exhaust duct 28 secured to, and rotating with, a motordriven turret 15 mounted on rollers 13 and forming the tower cover, and a drying zone having rings 50, 51 supported by a hopper 21 having conveyers 22 for discharging the dried coal. The wet coal is fed by a conveyer 8, Fig. 3, along a trough having a hopper 20 at its inner end through which the coal falls on to the upper rotary shelf 32 and is repeatedly turned over and moved towards an annular gap between the shelf and the duct by helical ploughs 48, 49 depending from radial brackets secured to the wall of the tower. From the shelf 32 the coal falls on to the shelf 34 on which it is repeatedly turned over and moved outwards by helical ploughs similar to those provided on the shelf 32. The coal then passes on to the lowest shelf 36 over which it is moved by helical ploughs towards the gap between the shelf and the duct 28. During its passage over the shelves the coal is subjected to the hot gases from a furnace 23, Fig. 4, which pass into the tower in the space above the upper plate 32 through a tangential duct 25 controlled by adjustable dampers 26. The gases flow downwards with the coal until they reach the flared inlet to the duct 28 at which point they pass up the duct while the coal continues to flow downwards through the cylindrical space formed between the rings 50, 51. During its passage between the rings it is subjected to hot gases admitted through a tangential duct 24 to the space around the rings. The gases flow upwards from the drying zone to the exhaust duct 28. Fresh air may be admitted to the bottom of the tower through an aperture controlled by a damper 27.
GB40231/58A 1957-12-12 1958-12-12 Improvements in or relating to the drying of finely divided material Expired GB839535A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US839535XA 1957-12-12 1957-12-12

Publications (1)

Publication Number Publication Date
GB839535A true GB839535A (en) 1960-06-29

Family

ID=22181726

Family Applications (1)

Application Number Title Priority Date Filing Date
GB40231/58A Expired GB839535A (en) 1957-12-12 1958-12-12 Improvements in or relating to the drying of finely divided material

Country Status (1)

Country Link
GB (1) GB839535A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112648798A (en) * 2021-01-21 2021-04-13 冷晓山 Fertilizer drying device with caking processing function

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112648798A (en) * 2021-01-21 2021-04-13 冷晓山 Fertilizer drying device with caking processing function

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