FR2438808A1 - High frequency drying of dielectric granules - in which the granules are fed through an elongated drying chamber by air at a temp. below that of the granules - Google Patents

High frequency drying of dielectric granules - in which the granules are fed through an elongated drying chamber by air at a temp. below that of the granules

Info

Publication number
FR2438808A1
FR2438808A1 FR7829135A FR7829135A FR2438808A1 FR 2438808 A1 FR2438808 A1 FR 2438808A1 FR 7829135 A FR7829135 A FR 7829135A FR 7829135 A FR7829135 A FR 7829135A FR 2438808 A1 FR2438808 A1 FR 2438808A1
Authority
FR
France
Prior art keywords
granules
fed
high frequency
air
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.)
Granted
Application number
FR7829135A
Other languages
French (fr)
Other versions
FR2438808B1 (en
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.)
TJURIN NIKOLAI
Original Assignee
TJURIN NIKOLAI
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 TJURIN NIKOLAI filed Critical TJURIN NIKOLAI
Priority to FR7829135A priority Critical patent/FR2438808A1/en
Publication of FR2438808A1 publication Critical patent/FR2438808A1/en
Application granted granted Critical
Publication of FR2438808B1 publication Critical patent/FR2438808B1/fr
Granted 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
    • F26B3/00—Drying solid materials or objects by processes involving the application of heat
    • F26B3/32—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action
    • F26B3/34—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects
    • F26B3/343—Drying solid materials or objects by processes involving the application of heat by development of heat within the materials or objects to be dried, e.g. by fermentation or other microbiological action by using electrical effects in combination with convection

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Biotechnology (AREA)
  • Molecular Biology (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

Granulated dielectric material is dried by super-high frequency heating as it is passed along a heating space at a non constant velocity by a stream of air heated to a temperature 20-50 degrees C below that to which the material is heated. The non constant velocity is effected by alternating zones of intensified and relatively calm granular motion. The process is carried out in a device comprising an elongated waveguide through which the granules are propelled and which is connected to a super-high frequency generator via an air separator which removes the moist air. After passage through the waveguide the particles are fed into a resonator bin. The dried granules may be used from the bin, recycled for further heating, or fed to the next of a series of waveguides connected in series. Used in drying plastics granules (granules of ABS plastics are quoted) or cereal and oil crops.
FR7829135A 1978-10-12 1978-10-12 High frequency drying of dielectric granules - in which the granules are fed through an elongated drying chamber by air at a temp. below that of the granules Granted FR2438808A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7829135A FR2438808A1 (en) 1978-10-12 1978-10-12 High frequency drying of dielectric granules - in which the granules are fed through an elongated drying chamber by air at a temp. below that of the granules

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7829135A FR2438808A1 (en) 1978-10-12 1978-10-12 High frequency drying of dielectric granules - in which the granules are fed through an elongated drying chamber by air at a temp. below that of the granules

Publications (2)

Publication Number Publication Date
FR2438808A1 true FR2438808A1 (en) 1980-05-09
FR2438808B1 FR2438808B1 (en) 1981-05-22

Family

ID=9213656

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7829135A Granted FR2438808A1 (en) 1978-10-12 1978-10-12 High frequency drying of dielectric granules - in which the granules are fed through an elongated drying chamber by air at a temp. below that of the granules

Country Status (1)

Country Link
FR (1) FR2438808A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2645950A1 (en) * 1989-04-18 1990-10-19 Marzat Claude Combined mechanical, electrical and electromagnetic device allowing optimised drying of corks or another product by the association of ventilation and the application of microwaves
EP1650515A1 (en) * 2004-10-21 2006-04-26 S.B. Plastic Machinery S.r.l. Vacuum dryer for granular plastic materials

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH379402A (en) * 1959-08-20 1964-06-30 Basf Ag Process for heat treatment in a high frequency field
US3771234A (en) * 1969-09-09 1973-11-13 Exxon Research Engineering Co Microwave drying process for synthetic polymers
US3854219A (en) * 1973-06-18 1974-12-17 Gen Electric Electronic dryer

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH379402A (en) * 1959-08-20 1964-06-30 Basf Ag Process for heat treatment in a high frequency field
US3771234A (en) * 1969-09-09 1973-11-13 Exxon Research Engineering Co Microwave drying process for synthetic polymers
US3854219A (en) * 1973-06-18 1974-12-17 Gen Electric Electronic dryer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2645950A1 (en) * 1989-04-18 1990-10-19 Marzat Claude Combined mechanical, electrical and electromagnetic device allowing optimised drying of corks or another product by the association of ventilation and the application of microwaves
EP1650515A1 (en) * 2004-10-21 2006-04-26 S.B. Plastic Machinery S.r.l. Vacuum dryer for granular plastic materials

Also Published As

Publication number Publication date
FR2438808B1 (en) 1981-05-22

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Legal Events

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