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WO2003001131A1 - Appareil d'interaction liquide/solide - Google Patents

Appareil d'interaction liquide/solide Download PDF

Info

Publication number
WO2003001131A1
WO2003001131A1 PCT/AU2002/000824 AU0200824W WO03001131A1 WO 2003001131 A1 WO2003001131 A1 WO 2003001131A1 AU 0200824 W AU0200824 W AU 0200824W WO 03001131 A1 WO03001131 A1 WO 03001131A1
Authority
WO
WIPO (PCT)
Prior art keywords
fluid
solid material
duct
inlet
enclosure
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/AU2002/000824
Other languages
English (en)
Inventor
Giacomo Salvatore Gasparini
Giovanni Barbieri
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.)
Jott Australia Pty Ltd
Original Assignee
Jott Australia Pty Ltd
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 Jott Australia Pty Ltd filed Critical Jott Australia Pty Ltd
Priority to BR0210623-0A priority Critical patent/BR0210623A/pt
Priority to CA002451618A priority patent/CA2451618A1/fr
Priority to AU2002311092A priority patent/AU2002311092B2/en
Priority to US10/482,100 priority patent/US6880263B2/en
Priority to EP02734910A priority patent/EP1409938A1/fr
Publication of WO2003001131A1 publication Critical patent/WO2003001131A1/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
    • 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
    • F26B17/122—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 the material moving through a cross-flow of drying gas; the drying enclosure, e.g. shaft, consisting of substantially vertical, perforated walls
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/08—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles
    • B01J8/085—Feeding reactive fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/08—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles
    • B01J8/12—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with moving particles moved by gravity in a downward flow

Definitions

  • a process of great practical importance is drying.
  • solid fuels used in combustion processes such as brown and black coal
  • have often to be dried before combustion and it is known to pass through beds of such materials combustor flue gases or gases indirectly heated by the combustion process.
  • US Patent No. 4,349,367 describes a method of recovering waste heat from furnace flue gases using a granular heat exchange means. This method involves passing gases from a furnace exhaust through a first bed of granular heat exchange medium so as to heat the medium. The heated medium is then passed to a second heat exchange bed where air being supplied to the furnace for combustion is passed through the (heated) medium to preheat the air. In this manner a portion of the waste heat is returned to the furnace by way of incoming combustion air.
  • the apparatus used in this method comprises a cylindrical vessel having an annular cavity through which the granular heat exchange medium passes.
  • the sides of the annular cavity are defined by concentrically arranged sets of louvres which facilitate passage of the furnace exhaust gases radially through the heat exchange medium.
  • This system requires the use of a granular medium which is chemically inert and resists attrition; gravel, stone aggregates, ceramics or other refractory materials are preferred.
  • the cylindrical configuration is not necessarily ideal for all combinations of solid- and gas-phase throughput volumes.
  • One of the many classes of device for this process is the so-called “cleanable granular bed filter", wherein gas-laden dust is passed through a particle-removing granular medium that may be circulated continuously or emptied periodically from the dust removal unit.
  • the invention described below is believed to have potential applications in separation processes where a fluid - be it liquid-phase or gas-phase - is passed through a solid-phase material.
  • Gas/solid operations also include humidifying and dehumidifying, and the invention herein described may find application in such operations also.
  • fluid and “fluid material” are terms to be interpreted broadly.
  • the fluid material in question may be a gas or liquid or a mixture of each or a mixture of gases or a mixture of liquids.
  • At least one of said inlet or outlet fluid ducts decreases in width with increasing distance from the or a said port thereof. This allows for flow of fluid to be kept even across the whole distance between the end walls.
  • each said passage increases in width from top to bottom thereof. This is to provide the best possible freedom of flow of the solid material under gravity downwards through the passages. Further, the degree of taper can be selected at the design stage after no more than routine trialling to give best results in any particular application. This may apply, for example, where the solid material is subject to swelling as the fluid passes through it.
  • the invention provides an apparatus for passing a fluid through a solid material including: an enclosure having an upper part adapted for the receipt of a solid material and a lower part adapted to receive said solid material from said upper part; and a passage extending between a pair of end walls of said enclosure and connecting said upper and lower parts, wherein opposing sides of said passage are defined by side walls of an inlet fluid duct and an outlet fluid duct extending between said end walls, said side walls having first openings into said passage whereby internal spaces of said ducts are in fluid communication with said passage, wherein said inlet and outlet ducts have respectively an inlet or outlet port for said fluid external to said enclosure, wherein in use of the apparatus fluid flows substantially transversely from said inlet duct to said outlet duct through said solid material in said passage, and wherein each said fluid duct has a second opening in at least one of said enclosure end walls for fluid communication between said internal space of said fluid duct and said inlet or outlet port of said fluid duct.
  • the invention can allow for construction of an apparatus with many said passages, using modules each having a single passage.
  • Figure 1 is a first sectional view (on a vertical plane) of an apparatus according to the invention
  • Figure 2 is a second sectional view of the apparatus shown in Figure 1 , taken along the line BB';
  • Figure 3 is a third sectional view of the apparatus shown in Figure 1, taken along the line CC indicated in Figure 1 ;
  • an apparatus 1 comprises an enclosure 2 having an inlet 3 and one or more outlets 4 for the solid material 5 to be treated.
  • Each outlet 4 preferably has an outlet regulator 6, such as for example a variable speed screw conveyor, which can be used to control the passage of the solid material 5 through the apparatus.
  • Similar means may be provided to control the amount of solid material 5 fed into the drier 1 through inlet 3.
  • the embodiment shown in Figures 1 to 3 is based on a vertical configuration in which the solid material 5 passes through the apparatus 1 under the force of gravity.
  • Each fluid inlet duct 9 and fluid outlet duct 10 has either one or two perforated side plates 14 or 15. Fluid may be introduced into the fluid inlet ducts 9 through inlet ports 16 and removed from the fluid outlet ducts 10 via outlet ports 17. Fluid inlet ducts 9 have closed ends at end wall 12 and fluid outlet ducts 10 have closed ends at end wall 11. In use of the apparatus 1 , the fluid percolates substantially transversely from fluid inlet ducts 9 and through the solid material in passages 13, a substantial proportion leaving the apparatus 1 via the outlet fluid ducts 10. Each passage 13 has a fluid inlet duct 9 on one side and a fluid outlet duct 10 on the other side.
  • Pump(s), fan(s) or blower(s) may be provided to pump the fluid into the fluid inlet ducts 9 and/or to draw it from the fluid outlet ducts 10.
  • passages 13 increase in width downwards, to minimize friction and any tendency to blockage.
  • the degree of taper appropriate for any particular application may be chosen by straightforward trialling.
  • the perforated plates 14 and 15 may be substantially flat (planar) as shown, or may be corrugated, or curved in either the vertical or horizontal direction, subject always to the need to ensure free flowing of the solid material 5.
  • the perforations 20 may be simple holes, but there are other possibilities which will suggest themselves to persons skilled in the art, such as louvres similar to those mentioned in US Patent 4,349,367.
  • Figure 3A shows, in a view equivalent to that of Figure 3, an apparatus 30 having a single fluid inlet duct 31 and a single fluid outlet duct 32, on either side of a single solid material flow passage 37.
  • the fluid inlet and fluid outlet ducts 31 and 32 include only single perforated plates 33 & 34, respectively, with side walls 35 of enclosure 36 providing the opposite wall for each duct.
  • This embodiment also offers the possibility of making an apparatus with multiple passages, corresponding to the passages 13 shown in the apparatus 1 , from modules such as the apparatus 30. This is facilitated by having inlet and outlet ports 38 and 39 on endwalls 40. The part of apparatus 1 within dotted boundary 200 in Figure 3 would then correspond to one module such as apparatus 30.
  • the apparatus of the invention provides effective treatment by the fluid of the solid material (or vice versa) by providing a high cross-sectional area of fluid flow through a body of solid material in a small enclosure 2 (or 36) of simple construction.
  • the solid material may be prone to forming dust through attrition of the moving granules.
  • the apparatus of the invention is preferably designed to have as few horizontal flat surfaces as possible in order to reduce internal dust buildup and to avoid impeding the passage of the solid material.
  • the fluid inlet ducts 9 and fluid outlet ducts 10 are preferably formed with an apex (21 and 22 respectively) at their leading edges.
  • ducts 9 and 10 may be provided (as shown in Figure 1) without a bottom plate such that any particulates which may pass through the perforated plates 14 and 15 can simply be deposited on the solid material 5 below, thus being carried away with it.
  • the bottom regions of the fluid inlet and fluid outlet units are preferably designed to produce low local fluid velocities; for example anti-dust baffles 23 may be provided at the trailing edges of the fluid inlet and fluid outlet ducts 9 and 10. Disposition of such baffles 23 across the primary direction of fluid flow reduces the likelihood of dust (or other small) particles being swept up by the fluid.
  • Particulate scrubbers (such as for example water scrubbers in a dust-removal-from-gas application) may be provided on the fluid outlet side of the apparatus in order to ensure that transfer of dust or particulates from the solid material to the fluid and on to subsequent components in the system (or ultimately the environment) is minimized. material is passing through the apparatus, causing the fluid to be passed through the inlet and outlet fluid ducts 9 and 10 (or 31 and 32) of the apparatus.
  • An example of the application of the apparatus and method of the present invention is its use as a drier in the drying of pelletised brown coal (solid material) using warm air as the drying agent (gas).
  • the energy source for producing warm air
  • the energy source is derived from waste heat available for example from a mine's hot artesian water or from cooling water normally used in an associated power station.
  • Relatively wet as-mined brown coal (such as brown coal mined in the La Trobe Valley, Victoria, Australia, which typically has a moisture content of 65 % by weight) can be partially dried (resulting in say a 5 % reduction in moisture content to 60 %) by taking a side-stream of mined material from the main coal feeder to the power station, pelletising or granulating the material, passing the granulate through a drier according to the invention and then returning the partially dried side-stream of brown coal to the main feeder.
  • the overall effect is a reduction in the overall moisture content of the brown coal feeding the power station and subsequent energy saving in the operation of the power station itself (for example, since the moisture content of the fuel is reduced prior to combustion, the volume of Combustion gases produced in the boiler is lower requiring less fan-power to pump those gases through the boiler circuit).
  • FIG. 4 shows a possible circuit for such an application, and will be described only briefly, being readily understandable by persons skilled in the art.
  • the circuit shows that brown coal from a mine 50 is conveyed to a boiler installation 51 whereby steam is produced to drive turbines 52 and thereafter is condensed by condenser(s) 53.
  • Some cooling water from the condensers 53 instead of passing directly to cooling tower(s) 54, is diverted to a heat exchanger 55 to heat air driven by a fan 56 into a drier 57 being an apparatus according to the invention, such as apparatus 1.
  • the drier 57 receives (as its solid material) coal pelletized in a pelletizer 58, the coal being a part of the total coal feed diverted through the pelletizer 58.
  • Dried coal is returned to the input stream, while if necessary air emerging from the drier 57 passes through a suitable scrubber 59. Water from heat exchanger 55 finally returns to the stream passing to the cooling tower(s) 54.
  • the overall heat load to the cooling towers is reduced by the quantity of energy transferred to the air.
  • the cooling water returning to the turbine condenser(s) 53 is cooler and the vacuum in the condenser steam space is improved, thus increasing the output of the turbines 52 for the same fuel consumption. Whilst this increase in output may not be large, it would mitigate the power usage in the drying process. Additionally, given that the coal being used in the power station contains less water, the transport, processing and handling power usage will also be reduced.
  • the water evaporated from the coal does not have to be evaporated from the cooling water circuit and therefore the make-up water to the cooling water is reduced by the amount evaporated from the cooling water.
  • the amount of water that needs to be evaporated by the cooling towers may be so reduced that significant equipment and water consumption savings could be realized in retrofitting existing plant as well as in new, purpose designed, plant.
  • normally low moisture fuels would need the full component of the cooling water evaporation
  • the high moisture from coal would substitute, at least in part the make-up water requirement from the normally valuable sources (rivers etc.)

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)

Abstract

La présente invention concerne un appareil (1) permettant de faire passer un liquide à travers un matériau solide (5). Cet appareil (1) comprend une enceinte (2) présentant une partie supérieure (7), dans laquelle le matériau solide est reçu. Ce matériau solide circule vers le bas à travers un ou plusieurs passages (13) qui s'étendent entre des parois d'extrémité (11 et 12). Des plaques latérales (14, 15) de conduites d'admission de liquide ou de conduites d'évacuation de liquide (9, 10) constituent des côtés opposés du ou des passages. Les plaques latérales sont perforées de façon que du liquide peut passer transversalement à travers le matériau solide qui circule à travers chaque passage. Les conduites d'admission et d'évacuation (9, 10) présentent respectivement des parties d'admission (16 et 17), à l'extérieur de l'enceinte. Du matériau solide arrive au niveau de la partie inférieure (8) de l'enceinte, puis quitte cette enceinte. L'appareil selon cette invention peut être conçu de manière compacte selon le degré de contact liquide/solide pourvu. Il peut trouver de nombreuses applications, telles que le séchage de solides, un échange thermique entre des liquides et des solides, une extraction de poussières à partir de gaz, des réacteurs chimiques et une humidification/déshumidification de liquides. Cet appareil convient notamment à la réduction de la teneur en humidité de lignite utilisée en tant que combustible dans le cadre de la production d'énergie électrique.
PCT/AU2002/000824 2001-06-25 2002-06-25 Appareil d'interaction liquide/solide Ceased WO2003001131A1 (fr)

Priority Applications (5)

Application Number Priority Date Filing Date Title
BR0210623-0A BR0210623A (pt) 2001-06-25 2002-06-25 Aparelho para interação entre fluido e sólido
CA002451618A CA2451618A1 (fr) 2001-06-25 2002-06-25 Appareil d'interaction liquide/solide
AU2002311092A AU2002311092B2 (en) 2001-06-25 2002-06-25 Fluid/solid interaction apparatus
US10/482,100 US6880263B2 (en) 2001-06-25 2002-06-25 Fluid/solid interaction apparatus
EP02734910A EP1409938A1 (fr) 2001-06-25 2002-06-25 Appareil d'interaction liquide/solide

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPR5901A AUPR590101A0 (en) 2001-06-25 2001-06-25 Fluid/solid interaction apparatus
AUPR5901 2001-06-25

Publications (1)

Publication Number Publication Date
WO2003001131A1 true WO2003001131A1 (fr) 2003-01-03

Family

ID=3829870

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2002/000824 Ceased WO2003001131A1 (fr) 2001-06-25 2002-06-25 Appareil d'interaction liquide/solide

Country Status (5)

Country Link
EP (1) EP1409938A1 (fr)
AU (1) AUPR590101A0 (fr)
BR (1) BR0210623A (fr)
RU (1) RU2004101968A (fr)
WO (1) WO2003001131A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007128104A1 (fr) * 2006-05-05 2007-11-15 Solex Thermal Science Inc. Traitement thermique de matières particulaires par chaleur indirecte
FR2922124A1 (fr) * 2007-10-10 2009-04-17 Inst Francais Du Petrole Reacteur en lit fixe a couches minces pour le traitement chimique de solide catalytique finement divise
AU2010100952B4 (en) * 2003-09-25 2010-10-28 Ect Coldry Pty Ltd Dryer and drying plant
FR2948580A1 (fr) * 2009-07-29 2011-02-04 Inst Francais Du Petrole Dispositif de distribution de la charge et de recuperation des effluents dans un reacteur catalytique a lit radial
US9459054B2 (en) 2012-05-04 2016-10-04 Solex Thermal Science Inc. Heat exchanger for cooling bulk solids
US10982900B2 (en) 2019-07-19 2021-04-20 Solex Thermal Science Inc. Thermal processing of bulk solids

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4188184A (en) * 1977-04-13 1980-02-12 Luigi Fornoni Continuous processes and equipment for treatment of solid substances
US5238659A (en) * 1989-05-23 1993-08-24 Kawasaki Jukogyo Kabushiki Kaisha Moving granular bed dust removal and reaction apparatus
DE20010671U1 (de) * 2000-06-22 2000-09-21 BSW Verfahrenstechnik GmbH Ingenieur- und Beratungsbüro, 06217 Merseburg Wärmetauscher für rieselfähige Feststoffe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4188184A (en) * 1977-04-13 1980-02-12 Luigi Fornoni Continuous processes and equipment for treatment of solid substances
US5238659A (en) * 1989-05-23 1993-08-24 Kawasaki Jukogyo Kabushiki Kaisha Moving granular bed dust removal and reaction apparatus
DE20010671U1 (de) * 2000-06-22 2000-09-21 BSW Verfahrenstechnik GmbH Ingenieur- und Beratungsbüro, 06217 Merseburg Wärmetauscher für rieselfähige Feststoffe

Cited By (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2010100952B4 (en) * 2003-09-25 2010-10-28 Ect Coldry Pty Ltd Dryer and drying plant
US7992319B2 (en) * 2003-09-25 2011-08-09 Ect Coldry Pty Ltd. Dryer, drying method and drying plant
WO2007128104A1 (fr) * 2006-05-05 2007-11-15 Solex Thermal Science Inc. Traitement thermique de matières particulaires par chaleur indirecte
RU2444687C2 (ru) * 2006-05-05 2012-03-10 Солекс Тэрмэл Сайенс Инк. Сушильное устройство (варианты), выпариватель (варианты), способ высушивания корпускулярного материала, способ удаления летучих веществ из сыпучего материала
US8578624B2 (en) 2006-05-05 2013-11-12 Solex Thermal Science Inc. Indirect-heat thermal processing of particulate material
US9050569B2 (en) 2007-10-10 2015-06-09 -Eni S.P.A. Thin layer fixed bed reactor for the chemical treatment of a finely divided catalytic solid
FR2922124A1 (fr) * 2007-10-10 2009-04-17 Inst Francais Du Petrole Reacteur en lit fixe a couches minces pour le traitement chimique de solide catalytique finement divise
WO2009071758A1 (fr) 2007-10-10 2009-06-11 Ifp Reacteur en lit fixe a couches minces pour le traitement chimique de solide catalytique finement divise
RU2472577C2 (ru) * 2007-10-10 2013-01-20 Ифп Тонкослойный реактор с неподвижным слоем для химической обработки тонкоизмельченного твердого катализатора
AU2008333103B2 (en) * 2007-10-10 2013-05-16 Eni S.P.A Thin-film fixed bed reactor for the chemical treatment of a finely divided catalytic solid
CN101820992B (zh) * 2007-10-10 2016-05-18 Ifp公司 用于精细催化剂固体的化学处理的薄层固定床反应器
FR2948580A1 (fr) * 2009-07-29 2011-02-04 Inst Francais Du Petrole Dispositif de distribution de la charge et de recuperation des effluents dans un reacteur catalytique a lit radial
US9339780B2 (en) 2009-07-29 2016-05-17 IFP Energies Nouvelles Device for distributing feed and recovering effluens in a radial bed catalytic reactor
US8715584B2 (en) 2009-07-29 2014-05-06 IFP Energies Nouvelles Device for distributing feed and recovering effluents in a radial bed catalytic reactor
KR101794495B1 (ko) 2009-07-29 2017-11-07 아이에프피 에너지스 누벨 방사상의 베드 촉매 반응기에서 공급물을 분산시키고 유출물을 회수하기 위한 장치
US9459054B2 (en) 2012-05-04 2016-10-04 Solex Thermal Science Inc. Heat exchanger for cooling bulk solids
US10982900B2 (en) 2019-07-19 2021-04-20 Solex Thermal Science Inc. Thermal processing of bulk solids

Also Published As

Publication number Publication date
RU2004101968A (ru) 2005-03-27
AUPR590101A0 (en) 2001-07-19
EP1409938A1 (fr) 2004-04-21
BR0210623A (pt) 2004-08-10

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