GB479090A - Improvements in or relating to processes and apparatus for drying granular or powdered materials - Google Patents
Improvements in or relating to processes and apparatus for drying granular or powdered materialsInfo
- Publication number
- GB479090A GB479090A GB2113736A GB2113736A GB479090A GB 479090 A GB479090 A GB 479090A GB 2113736 A GB2113736 A GB 2113736A GB 2113736 A GB2113736 A GB 2113736A GB 479090 A GB479090 A GB 479090A
- Authority
- GB
- United Kingdom
- Prior art keywords
- drier
- vacuum
- valve
- stage
- space
- 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
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
- F26B17/128—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 with provisions for working under reduced or increased pressure, with or without heating
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Drying Of Solid Materials (AREA)
Abstract
479,090. Drying grain. RILEY, G. W., and SCOTT & SON (LONDON), Ltd., G. July 30, 1936, No. 21137. [Class 58] [Also in Group XIII] A process of drying granular or powdered material, e.g. cereal grain, consists in continuously feeding the material at a controlled rate along'the interior of a heated first-stage vacuum-drier and into an unheated secondstage vacuum-drier normally communicating with the first-stage drier, the communication being periodically cut to allow the material in the second-stage drier to be completely dried while being subjected to a higher degree of vacuum, whereupon it is discharged and the operations are repeated so long as material is being fed to the first-stage drier. In the construction shown in Fig. 1, a first-stage vacuum-drier comprises a series of verticallydisposed tubes 2 around which steam is circulated. Each tube is fitted with a member 13 adapted to guide the grain that is uniformly heated. Above the tubes is a space 5 which receives the grain on entry past a feeding device comprising rubber rolls 14 arranged as described in Specification 377,502, [Group XIII]. The flow of material from the tubes 2 is controlled by an oscillating or revolving plate 12 within a space 6 in which the material is collected before delivery to the second-stage drier 9. The outlets from the spaces 6, 9 are controlled by hermetically-tight valves 8, 11. The space 5 is in communication with a condenser 25 and a wet vacuum-pump (not shown). The drier 9 is in communication with a condenser 28, the uncondensed vapour from which is passed into the condenser 25 by means of a steam jet pump 29. Valves 30, 31 are provided in association with the condensers. The valve 30 is closed and the valve 31 is opened while the valve 8 is open so that the wet vacuumpump builds up the required vacuum on the first-stage drier, after which the valve 8 is closed, the valve 31 is closed and the valve 30 is opened, enabling the steam jet to build up a higher vacuum in the drier 9. The valves controlling the supply and discharge of material may be controlled automatically by hydraulic means. The feeding means 14 may be replaced by a valve such as described in Specification 12316/00, [Class 32]. A further feeding means is shown in Fig. 2, in the form of a hopper 15 interposed between the space 5 and a primary supply hopper 16, the hopper 15 being cut off from the space 5 while being filled and being cut off from the hopper 16 while being emptied. In a further arrangement shown in Fig. 3, the material is conveyed to the vacuum system in a stream of water, being fed with water to a supply hopper 19, from which it is sucked by a pump 20 and delivered to a vacuum-chamber 21. Here the water is removed by means such as, for example, a centrifugal separator or a vibrating sieve. The material gravitates through a shoot 32 into the space 5 of the first-stage drier while the liquid flows down a pipe 23 to the hopper 19 to mix with a further supply of material. In a modification, a drier is employed in which steam circulates through a series of horizontallydisposed tubes spaced to provide serpentine passages between the tubes down which the material gravitates at a rate controlled by means of an oscillating or rotating plate.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2113736A GB479090A (en) | 1936-07-30 | 1936-07-30 | Improvements in or relating to processes and apparatus for drying granular or powdered materials |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB2113736A GB479090A (en) | 1936-07-30 | 1936-07-30 | Improvements in or relating to processes and apparatus for drying granular or powdered materials |
Publications (1)
Publication Number | Publication Date |
---|---|
GB479090A true GB479090A (en) | 1938-01-31 |
Family
ID=10157815
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB2113736A Expired GB479090A (en) | 1936-07-30 | 1936-07-30 | Improvements in or relating to processes and apparatus for drying granular or powdered materials |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB479090A (en) |
Cited By (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1989007743A1 (en) * | 1988-02-20 | 1989-08-24 | Prehm Yorck Uwe | Process and device for dewatering wet materials, in particular water-containing free-flowing and/or pourable bulk goods |
EP0329916A1 (en) * | 1988-02-20 | 1989-08-30 | Yorck-Uwe Dipl.-Ing. Prehm | Process and apparatus for dewatering wet goods, in particular flowable and/or bulk goods containing water |
WO2003004953A1 (en) * | 2001-06-18 | 2003-01-16 | Maguire Products, Inc. | Vacuum dryer |
US7347007B2 (en) | 2000-06-16 | 2008-03-25 | Maguire Stephen B | Low pressure high capacity dryer for resins and other granular and powdery materials |
US8141270B2 (en) | 2009-08-13 | 2012-03-27 | Maguire Products, Inc. | Gas flow rate determination method and apparatus and granular material dryer and method for control thereof |
CN102538409A (en) * | 2012-03-10 | 2012-07-04 | 苏州兆达特纤科技有限公司 | Method and device for drying p-aramid polymer |
USRE45501E1 (en) | 1997-09-19 | 2015-05-05 | Stephen B. Maguire | Low pressure dryer |
US10539366B2 (en) | 2014-04-30 | 2020-01-21 | Stephen B. Maguire | Method and apparatus for vacuum drying granular resin material |
CN113790581A (en) * | 2021-09-16 | 2021-12-14 | 袁应帅 | Energy-concerving and environment-protective type material drying equipment with select separately drying function |
US11203133B2 (en) | 2018-04-04 | 2021-12-21 | Novatec, Inc. | Method and apparatus for polymer drying using inert gas |
US11364657B2 (en) | 2018-04-04 | 2022-06-21 | Novatec, Inc. | Reducing moisture in granular resin material using inert gas |
-
1936
- 1936-07-30 GB GB2113736A patent/GB479090A/en not_active Expired
Cited By (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0329916A1 (en) * | 1988-02-20 | 1989-08-30 | Yorck-Uwe Dipl.-Ing. Prehm | Process and apparatus for dewatering wet goods, in particular flowable and/or bulk goods containing water |
WO1989007743A1 (en) * | 1988-02-20 | 1989-08-24 | Prehm Yorck Uwe | Process and device for dewatering wet materials, in particular water-containing free-flowing and/or pourable bulk goods |
USRE45501E1 (en) | 1997-09-19 | 2015-05-05 | Stephen B. Maguire | Low pressure dryer |
US7347007B2 (en) | 2000-06-16 | 2008-03-25 | Maguire Stephen B | Low pressure high capacity dryer for resins and other granular and powdery materials |
US8776392B2 (en) | 2000-06-16 | 2014-07-15 | Stephen B. Maguire | Resin drying method and apparatus |
WO2003004953A1 (en) * | 2001-06-18 | 2003-01-16 | Maguire Products, Inc. | Vacuum dryer |
EP1600715A1 (en) * | 2001-06-18 | 2005-11-30 | Maguire Products, Inc. | Granular plastic resin moisture extraction apparatus and method |
US8141270B2 (en) | 2009-08-13 | 2012-03-27 | Maguire Products, Inc. | Gas flow rate determination method and apparatus and granular material dryer and method for control thereof |
CN102538409A (en) * | 2012-03-10 | 2012-07-04 | 苏州兆达特纤科技有限公司 | Method and device for drying p-aramid polymer |
US10539366B2 (en) | 2014-04-30 | 2020-01-21 | Stephen B. Maguire | Method and apparatus for vacuum drying granular resin material |
US11203133B2 (en) | 2018-04-04 | 2021-12-21 | Novatec, Inc. | Method and apparatus for polymer drying using inert gas |
US11364657B2 (en) | 2018-04-04 | 2022-06-21 | Novatec, Inc. | Reducing moisture in granular resin material using inert gas |
CN113790581A (en) * | 2021-09-16 | 2021-12-14 | 袁应帅 | Energy-concerving and environment-protective type material drying equipment with select separately drying function |
CN113790581B (en) * | 2021-09-16 | 2023-01-13 | 山东淼珠生物科技有限公司 | Energy-concerving and environment-protective type material drying equipment with select separately drying function |
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