FR2372401A1 - Multistage hot gas dryer for conveyed bulk prod. - recovers low grade waste heat from industrial process, used e.g. in sugar refineries - Google Patents

Multistage hot gas dryer for conveyed bulk prod. - recovers low grade waste heat from industrial process, used e.g. in sugar refineries

Info

Publication number
FR2372401A1
FR2372401A1 FR7728100A FR7728100A FR2372401A1 FR 2372401 A1 FR2372401 A1 FR 2372401A1 FR 7728100 A FR7728100 A FR 7728100A FR 7728100 A FR7728100 A FR 7728100A FR 2372401 A1 FR2372401 A1 FR 2372401A1
Authority
FR
France
Prior art keywords
prod
stage
hot gas
waste heat
pref
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.)
Withdrawn
Application number
FR7728100A
Other languages
French (fr)
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.)
Raffinerie Tirlemontoise SA
Original Assignee
Raffinerie Tirlemontoise SA
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 Raffinerie Tirlemontoise SA filed Critical Raffinerie Tirlemontoise SA
Publication of FR2372401A1 publication Critical patent/FR2372401A1/en
Withdrawn legal-status Critical Current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
    • F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
    • F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
    • 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
    • F26B17/08—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 belts being arranged in a sinuous or zig-zag path

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Drying Of Solid Materials (AREA)

Abstract

Drying is carried out in several successive stages, each effected in one of several, superimposed conveying compartments. Each compartment houses a conveyor band permeable to hot gas which is supplied at 100 degrees C. In each compartment, hot gas is blown through a conveyed layer of prod. which is discharged into the next stage, or from the final stage. Successive stage conveyors carry progressively thicker layers of prod., each at a slower speed than the previous one. In each stage prod. layer thickness and conveyor speed are pref. adjustable. The hot gas is pref. supplied from a heat exchanger where waste heat from an industrial process raises the temp. of the gas. In every stage but the last, prod. layer thickness and conveyor speed pref. ensure saturation of the gas after passage through the layer. In the last stage, conditions are adjusted to obtain a final prod. of desired moisture content. Used for drying industrial prods. in bulk, e.g., beetroot pulp in sugar refineries. Low grade waste heat below 100 degrees is used to dry the prod. while the process is used to cool waste industrial fluids prior to disposal. Drying is rapid and efficient with no danger of overheating the prod.
FR7728100A 1976-11-29 1977-09-16 Multistage hot gas dryer for conveyed bulk prod. - recovers low grade waste heat from industrial process, used e.g. in sugar refineries Withdrawn FR2372401A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
LU76279A LU76279A1 (en) 1976-11-29 1976-11-29

Publications (1)

Publication Number Publication Date
FR2372401A1 true FR2372401A1 (en) 1978-06-23

Family

ID=19728419

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7728100A Withdrawn FR2372401A1 (en) 1976-11-29 1977-09-16 Multistage hot gas dryer for conveyed bulk prod. - recovers low grade waste heat from industrial process, used e.g. in sugar refineries

Country Status (2)

Country Link
FR (1) FR2372401A1 (en)
LU (1) LU76279A1 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2900362A1 (en) * 1979-01-05 1980-07-17 Industrieprojekt Ag Shredded sugar beet drying - in first mechanical press stage and second thermal drying stage with heat recovery
FR2475201A1 (en) * 1980-02-06 1981-08-07 Aquitaine Union Tech Conveyor belt for dryer - consists of horizontal belts arranged vertically and staggered to allow product from top belt to fall on one underneath
DE3321178A1 (en) * 1983-06-11 1984-12-13 IPRO Industrieprojekt GmbH, 3300 Braunschweig Process for the low temperature drying of previously dewatered beet chips
FR2562220A1 (en) * 1984-04-02 1985-10-04 Amalric Ets Marceau Hot-air drier for bulk materials, in particular fibrous textile materials
FR2566106A1 (en) * 1984-06-14 1985-12-20 Jacques Soyer Process and plant for drying by blowing air with percussion for fruits and vegetables
WO1998019972A1 (en) * 1996-11-07 1998-05-14 Hak Jae Kim Method and device for treating organic or inorganic sludge through multi-stage drying process
WO2010029045A3 (en) * 2008-09-09 2010-11-11 Hans Werner Method and device for drying biomass
WO2018176690A1 (en) * 2017-03-31 2018-10-04 济宁学院 Energy-saving environmentally-friendly integrated fluidized bed drying system and processing method based on multi-stage microwave heating

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE124146C (en) *
GB191326818A (en) * 1912-11-21 1900-01-01 Hofmann Alfred Improved Apparatus for Drying Materials or Articles in Bulk.
US1822313A (en) * 1925-12-12 1931-09-08 Creamette Company Machine for drying and curing macaroni and other products made from a paste of flour and water
DE666892C (en) * 1936-12-17 1938-11-01 Briem Maschf Geb Method and device for the step-like drying of fibrous materials

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE124146C (en) *
GB191326818A (en) * 1912-11-21 1900-01-01 Hofmann Alfred Improved Apparatus for Drying Materials or Articles in Bulk.
US1822313A (en) * 1925-12-12 1931-09-08 Creamette Company Machine for drying and curing macaroni and other products made from a paste of flour and water
DE666892C (en) * 1936-12-17 1938-11-01 Briem Maschf Geb Method and device for the step-like drying of fibrous materials

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2900362A1 (en) * 1979-01-05 1980-07-17 Industrieprojekt Ag Shredded sugar beet drying - in first mechanical press stage and second thermal drying stage with heat recovery
FR2475201A1 (en) * 1980-02-06 1981-08-07 Aquitaine Union Tech Conveyor belt for dryer - consists of horizontal belts arranged vertically and staggered to allow product from top belt to fall on one underneath
DE3321178A1 (en) * 1983-06-11 1984-12-13 IPRO Industrieprojekt GmbH, 3300 Braunschweig Process for the low temperature drying of previously dewatered beet chips
FR2562220A1 (en) * 1984-04-02 1985-10-04 Amalric Ets Marceau Hot-air drier for bulk materials, in particular fibrous textile materials
FR2566106A1 (en) * 1984-06-14 1985-12-20 Jacques Soyer Process and plant for drying by blowing air with percussion for fruits and vegetables
WO1998019972A1 (en) * 1996-11-07 1998-05-14 Hak Jae Kim Method and device for treating organic or inorganic sludge through multi-stage drying process
WO2010029045A3 (en) * 2008-09-09 2010-11-11 Hans Werner Method and device for drying biomass
WO2018176690A1 (en) * 2017-03-31 2018-10-04 济宁学院 Energy-saving environmentally-friendly integrated fluidized bed drying system and processing method based on multi-stage microwave heating

Also Published As

Publication number Publication date
LU76279A1 (en) 1978-07-10

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Legal Events

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