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WO2007105941A1 - Installation de séchage et/ou méthode de séchage d'une émulsion - Google Patents

Installation de séchage et/ou méthode de séchage d'une émulsion Download PDF

Info

Publication number
WO2007105941A1
WO2007105941A1 PCT/NL2007/000068 NL2007000068W WO2007105941A1 WO 2007105941 A1 WO2007105941 A1 WO 2007105941A1 NL 2007000068 W NL2007000068 W NL 2007000068W WO 2007105941 A1 WO2007105941 A1 WO 2007105941A1
Authority
WO
WIPO (PCT)
Prior art keywords
drying
conveyor
air
installation
foregoing
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.)
Ceased
Application number
PCT/NL2007/000068
Other languages
English (en)
Inventor
Edwin De Heer Aronds
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of WO2007105941A1 publication Critical patent/WO2007105941A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • F26B3/18—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact
    • F26B3/20—Drying solid materials or objects by processes involving the application of heat by conduction, i.e. the heat is conveyed from the heat source, e.g. gas flame, to the materials or objects to be dried by direct contact the heat source being a heated surface, e.g. a moving belt or conveyor
    • 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
    • F26B17/023—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 material being a slurry or paste, which adheres to a moving belt-like endless conveyor for drying thereon, from which it may be removed in dried state, e.g. by scrapers, brushes or vibration
    • 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
    • F26B17/04—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 all horizontal or slightly inclined
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B23/00—Heating arrangements
    • F26B23/001—Heating arrangements using waste heat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B5/00—Drying solid materials or objects by processes not involving the application of heat
    • F26B5/04—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum
    • F26B5/041—Drying solid materials or objects by processes not involving the application of heat by evaporation or sublimation of moisture under reduced pressure, e.g. in a vacuum for drying flowable materials, e.g. suspensions, bulk goods, in a continuous operation, e.g. with locks or other air tight arrangements for charging/discharging
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

Definitions

  • the present invention relates to a drying installation for drying a wet emulsion such as manure.
  • the present invention also relates to a method for drying a wet emulsion.
  • the present invention further relates to a method for applying a drying installation according to the present invention.
  • manure for all manner of applications thereof. For a number of said applications it is advantageous if the manure can be provided in a dried state.
  • An advantage hereof is that transport costs are for instance lower because the weight has been reduced by the drying.
  • a further advantage is that the dried material is suitable for a number of applications for which the wet material is perhaps unsuitable.
  • a problem of existing methods for drying manure is for instance that they are very time-consuming or do not achieve homogeneous drying.
  • the present invention provides a drying installation for drying a wet emulsion such as manure, comprising:
  • skimming member for skimming the emulsion to a thin layer
  • the skimming member can be an individual unit or can be comprised in an emulsion feed device or co-acts herewith,
  • - a conveyor heating for heating the drying conveyor, wherein: - the drying conveyor is suitable for conducting heat to the emulsion from the underside, and
  • the conveyor heating is arranged such that it supplies heat to the underside of the drying conveyor.
  • the drying conveyor preferably comprises a flat sheet belt, preferably comprising a metal belt.
  • a flat sheet belt is defined within the concept of this text as a belt comprising or formed by an infinite body from a metal sheet.
  • An advantage of such a drying conveyor is that a good heat conduction from the conveyor heating to the emulsion for drying is realized. An efficient drying with a relatively short drying time can hereby be achieved.
  • the conveyor heating comprises a contact surface for contact with the underside of the drying conveyor.
  • An advantage hereof is that maximum heat transfer can be brought about by this surface contact. Such a surface contact must be seen as a heat-conducting contact between as much as possible of the material of the conveyor heating and the drying conveyor. It must however be understood here that in preferred embodiments the use of for instance interruptions, in linear or other form, of this contact surface must also be deemed as forming part of the contact surface and/or may not be seen as an evasive design variation.
  • the drying conveyor and the conveyor heating preferably share a heat transfer area over substantially the whole drying width of the drying conveyor. It hereby becomes possible to realize the greatest possible direct heat transfer, although it is also possible to reduce for instance the resistance with longitudinal grooves and the like.
  • the drying conveyor and the conveyor heating are preferably in substantially direct contact over the whole drying width of the drying conveyor, and preferably over as great a length as possible.
  • the heat transfer is herein preferably realized over almost the whole length between the return members of the drying conveyor.
  • the conveyor heating is preferably provided with a heat supply by means of heated water, gas heating and also electricity.
  • the heat is however preferably obtained here by means of solar energy.
  • the embodiment wherein the conveyor heating is provided with a heat supply by means of heated water can be combined herewith in efficient manner.
  • the conveyor heating preferably comprises one or more flow channels with a heat generating wall on the top side with which a conveyor belt of the drying conveyor can be in direct contact. A maximum heat transfer to the conveyor belt is hereby possible at a minimum water temperature. Particularly this latter aspect is important in the use of solar energy.
  • the drying installation comprises an air drier for drying of drying air to be guided along the drying conveyor.
  • the drying installation more preferably comprises a drying air heat exchanger for heating drying air to be guided along the drying conveyor. Use is made here of the fact that warm air can absorb more moisture than cooler air.
  • the drying air heat exchanger preferably comprises separating walls and/or channels for further guiding of drying air. Heat can herein be supplied to the drying air by means of the separating walls or the walls of the channels.
  • the heating energy necessary for this purpose is preferably also obtained from solar energy. Since relatively little energy is required to heat air, less advantage can be gained with this measure of this embodiment, but solar energy is nevertheless recommended.
  • the separating walls and/or channels are preferably arranged for guiding drying air in downward direction. It is however also possible to supply the drying air to the drying conveyor from the side. It is recommended that the air is discharged laterally from the drying conveyor so that the air is as dry as possible throughout. A uniform supply of the drying air over the whole length of the drying conveyor is therefore advantageous.
  • the installation For supply of the drying air the installation is preferably provided with an air guide member for guiding drying air in the direction of the drying conveyor.
  • the drying air heat exchanger is preferably arranged here in the airflow in question.
  • the drying installation preferably comprises air supply means and/or air exhaust means for forced guiding of drying air for guiding thereof along the drying conveyor.
  • the drying air is here preferably guided along the drying air heat exchanger and the air drier.
  • the drying installation comprises a pressure space which envelops at least the drying conveyor for the purpose of creating a relatively low pressure therein.
  • the advantage hereof is that the transfer of moisture from the emulsion to the air is accelerated and/or improved.
  • the drying installation comprises solar collectors such as flat-plate collectors for supplying solar energy to the drying conveyor or the drying air heat exchanger.
  • solar energy can be fed to the system in very efficient manner. This solar energy is preferably buffered in a thermally insulated heat buffer. It is also possible for instance to generate electrical energy by means of solar energy and supply this to the drying installation.
  • a further aspect of the present invention relates to a method for drying air as according to one or more of the foregoing claims, comprising an emulsion preheating.
  • a drying installation according to the present invention is preferably applied for this purpose. Such a method has similar advantages as specified in this document with reference to the installation.
  • - Fig. 1 is a schematic side view of a first preferred embodiment according to the present invention
  • - Fig. 2 is a schematic view of a second preferred embodiment according to the present invention.
  • a first preferred embodiment (Fig. 1) relates to a manure drying installation 1 for drying manure.
  • the manure drying installation comprises a manure drying conveyor 2 comprising two drive rollers 16 which can be driven in per se known manner by means of a motor (not shown) .
  • a stainless steel conveyor belt is arranged over transport rollers 16. Such a conveyor belt can also be manufactured from other materials, wherein the heat-conducting capacities are particularly important.
  • a warm water reservoir 3 which is preferably suitable for transport of water therethrough. Suitable channels are preferably provided for this purpose on the inside of the reservoir. It is for instance possible to apply a number of lateral water feed inlets and outlets such that the warm water reservoir has as far as possible the same temperature along the whole length. Alternatively, it is possible to allow the warm water to flow in on one side and flow out on the other side, as seen in transverse direction. The water can be guided in longitudinal direction or in transverse direction through the warm water reservoir. It is also possible for the warm water reservoir to comprise zigzag channels for the water flow therethrough. It is further possible for the warm water reservoir to take up only a part of the height inside the conveyor belt. It is for instance possible to apply a relatively shallow warm water reservoir on the top side and a relatively shallow warm water reservoir on the underside. What is important is that sufficient energy is supplied for the conveyor belt to be heated to the degree required in order to dry the manure .
  • the surface of the warm water reservoir situated against the surface of the underside of the transporting plane is preferably.
  • a maximum heat transfer is hereby caused by means of conduction.
  • a surface pattern to be applied, such as longitudinal ribs, protrusions or a combination thereof.
  • the conveyor belt In the transverse direction the conveyor belt is wholly supported by heat reservoir 3, so that energy can be transferred over the whole width of the conveyor belt.
  • energy supply by means of water it is also possible to supply energy by means of an electrical resistance with electrical energy or by means of a burner for combusting a fuel.
  • the skilled person will of course be able envisage alternative methods of supplying energy within the scope of the present invention.
  • drying air 11 which is forcibly guided through the device under the influence of exhaust fan 13.
  • the incoming air is dried by means of an air drying unit so that the moisture-absorbing capacity hereof is increased.
  • the air is then distributed over the whole length of the drying conveyor by means of a guide hood 5.
  • the air is then guided through a heat exchanger 4 for the purpose of heating the drying air so that it can absorb more moisture when it flows over the drying conveyor and the wet emulsion located thereon.
  • the air is guided through channels so that the air arriving above the drying conveyor is equally dry throughout for an effective absorption capacity thereof.
  • the manure is arranged by means of a manure dispensing unit 9 at the start of the conveyor belt, which rotates in the direction of arrows B.
  • the manure dispensing unit is for instance able on the one hand to spray the manure onto the conveyor and on the other to spread and/or skim it.
  • the result is a thin layer of manure with a layer thickness in the range of 0.1 centimetre to several centimetres.
  • the optimal layer thickness depends on the transporting speed and the absorption capacity of the air, and for instance the applied temperature.
  • the drying process can also be influenced by material properties of the emulsion.
  • On the other side of the conveyor is situated a scraper unit 7 for scraping the dried manure from the conveyor belt.
  • the dried manure then comes to lie in a conveyor belt for advancing dried material in the direction of a reservoir
  • the manure drying installation is preferably further provided with a pressure chamber 8 for holding the atmosphere therein at underpressure, whereby the absorption capacity of the air is increased, by means of which the drying process is accelerated.
  • FIG. 2 shows a more comprehensive system for drying manure. Reference numerals are used here in accordance with figure 1 for similar components.
  • Heat exchanger 34 is provided with warm water from warm water reservoir 21 by means of pump 28.
  • the warm water reservoir is supplied with thermal energy by means of solar collector 22 and the circulation pump for the solar collectors 24.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Microbiology (AREA)
  • Health & Medical Sciences (AREA)
  • Molecular Biology (AREA)
  • Sustainable Development (AREA)
  • Drying Of Solid Materials (AREA)
  • Treatment Of Sludge (AREA)

Abstract

L'invention concerne une installation de séchage permettant de sécher des émulsions humides telles que du fumier, comprenant : - un convoyeur de séchage (2) permettant de sécher l'émulsion pendant le transport, - un élément d'écrémage permettant d'écrémer l'émulsion en une couche fine, l'élément d'écrémage pouvant être une unité individuelle ou être comprise dans un système d'alimentation en émulsion (9), ou fonctionner en collaboration avec un tel système, - un chauffage de convoyeur (3) permettant de chauffer le convoyeur de séchage (2) ; - le convoyeur de séchage (2) étant conçu pour conduire la chaleur du dessous vers l'émulsion, et - le chauffage du convoyeur (3) étant conçu pour fournir de la chaleur au dessous du convoyeur de séchage (2).
PCT/NL2007/000068 2006-03-10 2007-03-12 Installation de séchage et/ou méthode de séchage d'une émulsion Ceased WO2007105941A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
NL1031341 2006-03-10
NL1031341 2006-03-10

Publications (1)

Publication Number Publication Date
WO2007105941A1 true WO2007105941A1 (fr) 2007-09-20

Family

ID=38181035

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/NL2007/000068 Ceased WO2007105941A1 (fr) 2006-03-10 2007-03-12 Installation de séchage et/ou méthode de séchage d'une émulsion

Country Status (1)

Country Link
WO (1) WO2007105941A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109654862A (zh) * 2018-11-19 2019-04-19 葛瑞 一种用于颗粒物料的节能烘干设备
WO2021207159A1 (fr) * 2020-04-08 2021-10-14 Oregon Drytech, Llc Séchoir
RU2771844C1 (ru) * 2021-06-30 2022-05-12 Федеральное государственное бюджетное образовательное учреждение высшего образования "Ульяновский государственный аграрный университет имени П.А. Столыпина" Устройство для сушки зерна

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL31578C (fr) *
GB191013470A (en) * 1910-06-03 1911-06-06 Heinrich Julius Glass Improvements in Drying Apparatus for Liquid and Pasty Substances.
CH99815A (fr) * 1921-11-15 1923-06-16 Kiefer Jean Ernest Appareil pour dessécher des jus ou des liquides.
US1592078A (en) * 1925-09-10 1926-07-13 Cano Vernon Apparatus for heating, cooling, or drying materials
US1965229A (en) * 1930-10-30 1934-07-03 Philadelphia Drying Machinery Drier and the like
CH216755A (de) * 1941-03-22 1941-09-15 Franz Dr Siegwart Verfahren und Apparatur zum Entzug von verdampfbaren Flüssigkeiten aus wärmeempfindlichen, oxydablen Massengütern, wie technischen Produkten, alkoholhaltigen Materialien, Lebensmitteln, Futtermitteln usw.
US2360100A (en) * 1941-11-24 1944-10-10 Bowen William Spencer Open steam box drier
US3570576A (en) * 1968-08-22 1971-03-16 Henri Griffon Continuous dehydration apparatus
US4559235A (en) * 1982-05-20 1985-12-17 Miller Dehydrator International, Inc. Low temperature dehydrated alfalfa product and method and apparatus for processing same
DE9305644U1 (de) * 1993-04-15 1993-08-12 Debbeler, Bernard, Dipl.-Ing., 49661 Cloppenburg Kottrocknungsanlage
FR2704446A1 (fr) * 1993-04-29 1994-11-04 Roche Michel Vaporateur à cycle thermodynamique pour le traitement des eaux polluées ou le séchage de diverses boues.
US5743022A (en) * 1994-07-22 1998-04-28 Tmci (Uk) Limited Sheet material drying
DE19851793A1 (de) * 1998-11-10 2000-05-18 Pulsfort Josef Verfahren und Vorrichtung zum Trocknen pastöser Massen

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL31578C (fr) *
GB191013470A (en) * 1910-06-03 1911-06-06 Heinrich Julius Glass Improvements in Drying Apparatus for Liquid and Pasty Substances.
CH99815A (fr) * 1921-11-15 1923-06-16 Kiefer Jean Ernest Appareil pour dessécher des jus ou des liquides.
US1592078A (en) * 1925-09-10 1926-07-13 Cano Vernon Apparatus for heating, cooling, or drying materials
US1965229A (en) * 1930-10-30 1934-07-03 Philadelphia Drying Machinery Drier and the like
CH216755A (de) * 1941-03-22 1941-09-15 Franz Dr Siegwart Verfahren und Apparatur zum Entzug von verdampfbaren Flüssigkeiten aus wärmeempfindlichen, oxydablen Massengütern, wie technischen Produkten, alkoholhaltigen Materialien, Lebensmitteln, Futtermitteln usw.
US2360100A (en) * 1941-11-24 1944-10-10 Bowen William Spencer Open steam box drier
US3570576A (en) * 1968-08-22 1971-03-16 Henri Griffon Continuous dehydration apparatus
US4559235A (en) * 1982-05-20 1985-12-17 Miller Dehydrator International, Inc. Low temperature dehydrated alfalfa product and method and apparatus for processing same
DE9305644U1 (de) * 1993-04-15 1993-08-12 Debbeler, Bernard, Dipl.-Ing., 49661 Cloppenburg Kottrocknungsanlage
FR2704446A1 (fr) * 1993-04-29 1994-11-04 Roche Michel Vaporateur à cycle thermodynamique pour le traitement des eaux polluées ou le séchage de diverses boues.
US5743022A (en) * 1994-07-22 1998-04-28 Tmci (Uk) Limited Sheet material drying
DE19851793A1 (de) * 1998-11-10 2000-05-18 Pulsfort Josef Verfahren und Vorrichtung zum Trocknen pastöser Massen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109654862A (zh) * 2018-11-19 2019-04-19 葛瑞 一种用于颗粒物料的节能烘干设备
WO2021207159A1 (fr) * 2020-04-08 2021-10-14 Oregon Drytech, Llc Séchoir
RU2771844C1 (ru) * 2021-06-30 2022-05-12 Федеральное государственное бюджетное образовательное учреждение высшего образования "Ульяновский государственный аграрный университет имени П.А. Столыпина" Устройство для сушки зерна

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