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 refineriesInfo
- 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- Withdrawn
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.
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)
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)
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 |
-
1976
- 1976-11-29 LU LU76279A patent/LU76279A1/xx unknown
-
1977
- 1977-09-16 FR FR7728100A patent/FR2372401A1/en not_active Withdrawn
Patent Citations (4)
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)
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
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |