EP0118459A1 - Procede et dispositif pour la fourniture de combustibles solides aux consommateurs - Google Patents

Procede et dispositif pour la fourniture de combustibles solides aux consommateurs

Info

Publication number
EP0118459A1
EP0118459A1 EP19830902230 EP83902230A EP0118459A1 EP 0118459 A1 EP0118459 A1 EP 0118459A1 EP 19830902230 EP19830902230 EP 19830902230 EP 83902230 A EP83902230 A EP 83902230A EP 0118459 A1 EP0118459 A1 EP 0118459A1
Authority
EP
European Patent Office
Prior art keywords
container
fuel
air
ash
opening
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Withdrawn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
EP19830902230
Other languages
German (de)
English (en)
Inventor
Dieter Lhota
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.)
'comfort' Heiztechnik & Co Kg GmbH
Original Assignee
'comfort' Heiztechnik & Co Kg GmbH
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
Priority claimed from AT287282A external-priority patent/AT377196B/de
Application filed by 'comfort' Heiztechnik & Co Kg GmbH filed Critical 'comfort' Heiztechnik & Co Kg GmbH
Publication of EP0118459A1 publication Critical patent/EP0118459A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K3/00—Feeding or distributing of lump or pulverulent fuel to combustion apparatus
    • F23K3/02—Pneumatic feeding arrangements, i.e. by air blast
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J1/00—Removing ash, clinker, or slag from combustion chambers
    • F23J1/02—Apparatus for removing ash, clinker, or slag from ash-pits, e.g. by employing trucks or conveyors, by employing suction devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K1/00—Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus

Definitions

  • the invention relates to a method for supplying consumers, in particular in single and two-family houses, with solid fuel, for example coal, from a central distribution warehouse using a transport vehicle, and for disposing of the combustion residues, and devices for carrying out the method.
  • shaped, free-flowing fuel with a grain size between 1 to 12 mm, preferably 4 to 12 mm, such as coal granulate, wood or
  • the object of the invention is therefore to provide a method of the type mentioned, which provides an automatic, dust and scree-free supply of consumer stations, there an automatic, dust and dirt-free supply of the consumer each with controllable amounts of the granular, free-flowing
  • this object is achieved in that solid fuel is conveyed to the consumer in the transport vehicle having a transport boiler as air-conveyable, free-flowing fuel granules, where it is discharged using air into a small storage comprising at least one silo, in that the fuel granules in In the course of the combustion at the location of the consumer, air is conveyed in partial quantities from the silo into a storage container, from which the combustion chamber of the fireplace is fed directly, and that the ash released from the combustion chamber of the fireplace into a collection container below Use of air is brought to a provisional landfill, the excess air being separated from it at each receiving location of the conveyed material.
  • the gaseous transport medium In order to keep the operating pressure of the conveying air again, for example at 0.3 bar, especially when the transport vessel is unloaded, provision is further made for the gaseous transport medium to be divided into two partial streams for unloading the transport vehicle, one of which presses the transport vessel from the inside acted upon and the other is fed into the line. " This also enables the conveyor lines to be completely emptied.
  • the dedusting of the conveying air can be carried out by means of suitable filters, for example fabric, machine sieve or the like. take place in the course of loading or unloading, by the air is filtered into the open after separation from the conveyed material ⁇ at the outlet, wherein the overall residues are filtered out in the pumped material gur ⁇ .
  • suitable filters for example fabric, machine sieve or the like.
  • the material to be conveyed is sucked into a separating container by air transport and separated there.
  • the more or less accumulating dust when conveying solids is separated from the clean air side by filters.
  • filter cleaning is provided after every cycle.
  • Known cleaning systems work, for example, with mechanical tapping devices, blowing off with compressed air, air flow reversal of the conveying fan, or with rotating wipers and the like.
  • the ejection from the separator then takes place after the conveying fan has been switched off and a flap has been opened downwards by gravity.
  • Another development of the method according to the invention is characterized in that the transfer of the fuel granules from the intermediate container into the storage container and / or the removal of the ashes from the combustion chamber of the fireplace into a collecting container under the influence of gravity he follows.
  • the resulting ash naturally has a temperature at which the pneumatic conveying from the collecting container into the temporary landfill by means of simple, conventional hose lines is not so easy or not possible at all. It is therefore provided in a further embodiment that the ashes are transferred in batches from a collecting chamber of the collecting container into a collecting chamber in which the ashes cool, and that the ashes are transferred into the
  • Landfill takes place discontinuously, each time the collection chamber is full, immediately before the next batch is transferred from the collection chamber. There is already a small amount of cooling when the ash is collected in the collecting chamber, but the major part of the cooling takes place in the much larger collecting chamber.
  • a transport vehicle that has a blower for generating the conveying air and the transport tank of two different sizes is particularly suitable
  • Container with filling openings and discharge funnels is divided, of which the larger one can be connected to the pressure side of the blower and the smaller one can optionally be connected to the pressure or suction side of the blower, with the fillable volume of the transport vessel and the fillable volume of the smaller container at most as a unit of volume of the fuel granules to be transported corresponds to the volume of the ash obtained therefrom.
  • Transport boiler corresponds approximately to four times the volume of the smaller container.
  • the transport boiler 3 of the transport boiler can be, for example, -17 m, the smaller container also being used to hold the ashes from the temporary landfills of the consumers
  • 3 serves, for example, has 4 m fillable volume.
  • the volume of the smaller container corresponds to a filling quantity of approx. 3,000 kg, i.e. a quantity that can usually be bought by one consumer at a time.
  • This smaller container is the first to be emptied when the consumer is supplied.
  • the delivery line a flexible hose with an example diameter of 80 mm and a maximum length of 25 m for an operating pressure of 0.3 bar, is connected to the discharge funnel, and its other end is connected to the filling connection of the fuel granules.
  • OMPI OMPI and opening the valves for upper and lower air assigned to the smaller container, the latter is emptied and, if necessary, further fuel granules are withdrawn from the larger container.
  • the transport boiler rests on a scale which enables an accurate weight display even when the vehicle is inclined. Such scales are known, so that their detailed description is unnecessary.
  • the delivery line is now connected on the one hand to an ash silo forming the provisional landfill and on the other hand to a filling connection on the upper side of the smaller container, which can also be used for pneumatic filling with fuel granules. Now the ash is sucked back into the smaller container with the aid of the blower.
  • the sizes of the two containers are determined based on experience, so that the ashes of the fireplaces of all consumers can be taken up in the smaller container per trip. Since the large container also has a pneumatic filling opening, an additional return to the larger container would also be conceivable.
  • the larger container is divided into chambers by at least one partition wall provided on the top with air passage openings, each with its own filling opening and its own discharge funnel.
  • a small warehouse set up at the location of the consumer for carrying out the preferred process variant with ash disposal by the transport vehicle is set up in such a way that it has at least one fuel granulate silo which has a filling connection for the delivery line and an air outlet covered with a filter. Has opening and an outlet that with the connection for the delivery line to
  • Storage container comprises an ash silo forming the provisional landfill, which has a filling connection for the delivery line from the collecting container of the fireplace, an air outlet opening covered with a filter and an outlet and a connection for the return line to the transport boiler, whereby the fillable total volume of all fuel granulate silos to the volume of the ash silo is at most like one unit of volume of the fuel granulate to the volume of the ash obtained therefrom.
  • the individual silos for example made of a coated terephthalic acid Polvester fiber fabric, known under the trademark Trevira- y , are suspended directly adjacent to one another in a frame, the filling connections of the fuel granulate silo and the return line connection of the ash silo being located at an easily accessible location, as in the case of oil tanks .
  • the fill volume ratios are determined based on experience, so that separate ash disposal between two fuel purchases is not necessary.
  • the outlet openings for the conveying air, which in the ash silo comes from a blower of the collecting container, are preferably combined to form a common exhaust air duct leading into the open.
  • An intermediate container which is preferably inserted between the fuel granulate silo of the consumer and the storage container of the fireplace, can be designed in a first embodiment in such a way that it has a separating container which has an inlet opening for connecting the delivery line coming from the fuel granulate silo, with a through move a first closure body, transfer the fuel granules into the storage container - 8th -
  • leading outlet opening is provided with an air outlet opening and with at least one cyclone with a tangential inlet opening and with an axial outlet opening which can be closed by means of a second closure body, the outlet opening of the separating container and the outlet opening of the cyclone being arranged coaxially and the two closure bodies or the like for closing both outlet openings by means of a common actuating rod.
  • This version does not require a filter, but the dust is separated off using a cyclone.
  • the blower required to generate the conveying air flow for the fuel to be supplied by the fuel granulate silo is designed as a suction blower and is assigned to the air outlet opening of the intermediate container.
  • at least one closure body or the like on the common actuating rod. is slidably mounted in the axial direction.
  • outlet opening of the separating container and the outlet opening of the cyclone are conical and the closure bodies for these outlet openings are conical.
  • the second closure body or the like for closing the outlet opening of the cyclone by means of a compression spring against a stop on the actuating rod. is supported.
  • the tangential inlet opening of the cyclone in the upper part of the separating tank is arranged at approximately the same height as the entry opening of the separating tank.
  • a further embodiment of an intermediate container can be characterized in that it has a separating container which initiates an entry opening for. Connection of the delivery line coming from the fuel granulate silo with a closable with a closure body, the fuel granules in the storage container he transferring discharge opening with an air outlet opening and with an invertible, for example frustoconical shaped flat filter made of deformable material, which is connected upstream of the air outlet opening and approximately in the middle with the closure body rigidly coupled actuating rod or the like. is connected, the actuator being mechanically actuated.
  • the suction fan is assigned to the air outlet opening.
  • Opening of the discharge opening is inevitably bent down or turned inside out, as a result of which the conveyed material adhering to the filter is detached from the filter and falls down into the separating container.
  • the wall of the separating container is designed to be kinked, the lower part of this wall being less inclined than the upper part of this wall.
  • the discharge opening of the separating container is conical and the closure body for this discharge opening is conical.
  • a collecting container for the ashes from the fireplace which, depending on the type of firing (underfeed firing, fluidized bed firing, etc.) by a dust separator, by an ash discharge device from the combustion chamber or by a
  • the collecting container has an upper collecting chamber, a lower collecting chamber, a shut-off element arranged between the two chambers and a blower arranged at the outlet thereof for connecting the return line to the provisional landfill , wherein the shut-off device transfers the ashes collected in the collecting chamber up to a certain height in batches into the collecting chamber, which is optionally provided with a cooling jacket.
  • the cooling of the grayling in the collecting container to "pneumatically suitable temperatures is particularly also when used of the ash silos described, which are not excessively temperature-resistant.
  • the cooling medium flowing into the optionally provided cooling jacket can introduce the absorbed heat into the medium of a heating system, for example.
  • 1 is a schematic representation of the supply and disposal process according to the inventive method
  • 2 shows a schematic illustration of the pneumatic conveyor system of the transport vehicle
  • FIG. 3 shows a schematic representation of a first embodiment of an intermediate container for carrying out the method
  • Fig. 4 is an enlarged detail view of the insects ⁇ natalers of FIG. 3 in longitudinal section;
  • Fig. 5 is a section along the line VV in Fig. 4,
  • Fig. 6 is a schematic representation of a second embodiment of an intermediate container for performing the method, '
  • FIG. 7 shows an enlarged detailed view of the intermediate container according to FIG. 6 in longitudinal section
  • FIG. 8 shows detail A from FIG. 7 on an enlarged scale
  • FIGS. 9 shows a schematic illustration of the combination of the two intermediate containers according to FIGS. 3 and 6.
  • the fuel granulate which has already been reduced to the desired grain size 3 in a device (not shown), is produced from a central distribution store, which is only indicated by an outlet connection, for example from a large silo or transportable large containers , so-called “big bags", loaded into a transport vehicle 2.
  • This has a chassis 61, a scale 62 arranged schematically on the chassis 61, which allows exact weighing even when the transport vehicle 2 is inclined, and a closed transport tank 3 resting on the scale 62.
  • the transport vessel 3 is divided into a smaller container 5 and a larger container 4 by a partition 7, the latter again being divided into two chambers 8 by a partition 9 provided in the upper region with air passage openings 10.
  • each chamber 8, as well as the smaller container 5, have an upper filling opening 11 with a pressure-resistant closure part 63 and a lower outlet funnel 12.
  • each chamber is provided with a pneumatic supply connection 64 (Fig.2).
  • a pneumatic supply connection 64 (Fig.2).
  • a small store 13 is set up, which is arranged in a frame 66 and comprises at least one fuel granulate silo 14 and an ash silo 15.
  • Each fuel granulate silo 14 has a filling line with a filling connection 16 for connection to the delivery line 17 coming from the transport boiler 3
  • Transport vehicle 2 an air outlet opening 19 for discharging the conveying air, one of these upstream filter 18, and an outlet 20, from which another conveyor line 22 leads to the reservoir 52 of the fireplace 53.
  • the ash silo 15, which forms a provisional landfill 23 for receiving the ash, has a filling connection 24 for connection to the delivery line 25 coming from the collecting container 55, an air outlet opening 27, one of these upstream filters 26, and an outlet 28 to which the return line 29 to the smaller container 5 can be connected.
  • the filling volume ratio between the transport boiler 3 and the smaller container 5 and between the fuel granulate silo (s) 14 and the ash silo 15 is in each case dimensioned such that the filling volume of fuel granules in each case at most corresponds to the filling volume resulting therefrom ⁇ corresponding ash, so that no additional ash transport routes are necessary.
  • the actual furnace system includes the one shown schematically
  • the outlet 59 of the collecting chamber 57 opens into the delivery line 25, which is fed with air by a blower 60 and which transfers the ash to the provisional landfill 23, that is to the ash silo 15.
  • the filled collecting chamber 57 is emptied only immediately before the next batch is transferred from the collecting chamber 56 in order to achieve a sufficient cooling time.
  • the fuel granulate is filled into the transport boiler 3 of the transport vehicle 2 from the central distribution warehouse 1 and brought to the location of the consumer.
  • the pneumatic system of the transport vehicle 2, which is operated by a blower 6, is explained with reference to FIG. 2.
  • From the blower 6 leads a pressure line 68, from which each chamber 8 and the smaller container 5 are supplied with compressed air by means of main valves 71.
  • the pressure line bifurcates into an upper air line 69, which opens into a chamber 8 or the smaller container 5 at the top, and an lower air line 70, which is assigned to the outlet funnels 12.
  • main valves 71 After each main valve 71, the pressure line bifurcates into an upper air line 69, which opens into a chamber 8 or the smaller container 5 at the top, and an lower air line 70, which is assigned to the outlet funnels 12.
  • a valve 72 is inserted in each upper air line 69 and a valve 73 in each lower air line 70.
  • a connection 65 connects to each discharge funnel 12, to which the delivery line 17 to the fuel granulate silo 14 can be connected.
  • an inclined line 77 branches off from the top of each chamber 8 and the smaller container 5, which leads back to the blower 6 via a filter 78 and a three-way valve 79; air can be sucked in via the third connection of the three-way valve 79.
  • a valve 76 is inserted into the branch line of each chamber 8 and the smaller container 5 to the suction line 77.
  • the smaller container 5 has in addition *-yet a second branch line 74 to the suction line 77, which can be blocked by a valve 75, and is insertable into the filling opening 11, wherein it is a filter prefixed 80th Furthermore, the smaller container 5 and preferably also each chamber 8 is equipped with the filling connection 64 mentioned.
  • the delivery line 17 is connected to the connection 65 of the smaller container 5, the valve 79 and the valves 71, 72 and 73 assigned to the smaller container 5 are opened, and the fan 6 is switched off.
  • the combination of upper and lower air conveys the fuel granulate into the fuel granulate silo 14 of the consumer. If the smaller container 5 is emptied, the blower 6 is shut down, the valves 71, 72, 73 of the smaller container 5 are closed, and the delivery line 17 is uncoupled. If even more fuel is desired by the consumer, this procedure is repeated with respect to a chamber 8.
  • the valves 71, 72, 73 are not closed at the same time, but rather the valve 72 becomes the first. and a shut-off element (not shown) of the outlet 12 is closed, so that the conveying - 15 -
  • the ash from the ash silo 15 can now be returned to the smaller container 5, for which purpose the conveying line 17 is inserted between the connection 64 of the smaller container 5 and the outlet 28 of the ash silo 15 and now forms the return line 29 *.
  • the three-way valve 79 is changed over, the ash filter 80 is inserted and the valve 75 is opened. (The valves 76 are still closed.)
  • the blower 6 which is switched on now sucks the ash through the return line 29 from the ash silo into the smaller container 5, the. Conveying air to the blower 6 passes through the ash filter 80 and the filter 78 of the suction line 77 and is cleaned by the. ' . further three-way valve 81 inserted and switched into the pressure line 68 is blown out. Ash is also preferably taken up from the ash silos 15 of other consumers by the smaller container 5 in the manner described.
  • the valves 76 are required in particular for pneumatic filling of the transport boiler 3 in the central distributor store if the fuel granules are not poured in via the filling opening 11.
  • the work flow is the same as that of the ash retrieval, the filter 78 of the suction line 77 usually being sufficient to separate the coal dust.
  • a granulate supply line is attached to the filling connections 64, the respective valve 76 is opened and the fuel is sucked through the blower 6 into the smaller container 5 and the chambers 8.
  • the fuel is brought from the fuel granulate silo 14 by means of the blower 21 via the delivery line 22 to the storage container 52.
  • an intermediate container 31 is connected directly upstream of the storage container 52, from which, under the influence of gravity, the - 16 -
  • Fuel is thrown into the storage container 52 in batches.
  • the intermediate container 31 shown schematically in FIG. 3 comprises a separating container 32 for the fuel granulate, which has an inlet opening 33 and an outlet opening 34 which can be closed with a closure body 38.
  • the outlet opening 34 leads to the storage container 52, which is arranged below the separating container 32.
  • a cyclone 36 for dust separation is provided in the separating container 32, the essentially vertical axis of which is arranged in the middle of the container and extends coaxially to the axis of the outlet opening 34 of the separating container 32.
  • the cyclone 36 which tapers conically downward, has a tangential inlet opening 37 in the upper region of the separating tank 32 and an outlet opening 40 coaxial with the outlet opening 34 of the separating tank 32 on its lower end face.
  • the outlet opening 40 can be closed by means of a closure body 39.
  • a closure body 39 In the upper area of the cyclone 36 there is an air outlet opening 35 to which a suction blower 2 ′′ is connected.
  • the closure body 38 for the outlet opening 34 of the separating container 32 and the closure body 39 for the outlet opening 40 of the cyclone 36 are arranged coaxially with one another and by means of a common actuating rod 41 can be actuated, which is adjustable in the axial direction by means of an electric motor (not shown in more detail)
  • the closure body 38 for the outlet opening 34 of the separating container 32 is firmly connected to the actuation rod 41, whereas the closure body 39 for the outlet opening 40 of the cyclone 36 is mounted such that it can be displaced to a limited extent on the actuating rod 41.
  • the closure body 39 is held by means of a compression spring 82 in contact with the outlet opening 40 of the cyclone 36.
  • the closure body 39 is pressed down and the outlet opening 40 is opened.
  • the closing body 38 is moved downward by means of the actuating rod 41 and thus the outlet opening 34 of the separating container 32 is opened, as a result of which the fuel granules fall into the storage container 52 located underneath.
  • the two closure bodies 38, 39 can thus seal independently of one another. The design allows it to function perfectly, even if there is back pressure on the discharge side. ' Furthermore, the two closure bodies 38, 39 can also be formed by a single continuous cone or truncated cone.
  • the separation container 32 and cyclone 36 can also be closed with a flat flap which can be pivoted downwards.
  • the closure can be actuated using a magnet or pneumatically.
  • the intermediate container 31 shown in FIG. 3 can have, in addition to the cyclone 36, another dust separating device which comprises a flat filter. This embodiment is shown in Fig. 9 and will be described later.
  • Fig. 4 shows a detailed representation of the
  • FIG. 5 shows a section through FIG. 4, the tangential inlet opening 37 of the cyclone 36 in the upper part of the separating container 32 in particular being clearly visible.
  • FIG. 6 shows a second embodiment of an intermediate container 31 schematically. It in turn comprises a separating container 45 for the fuel granules with an inlet opening 46 and with an outlet opening 48 which can be closed with a closure body 47. On the top of the separating container 45 is the
  • Air outlet opening 49 is provided.
  • the storage container 52 is located below the separating container 45.
  • the closure body 47 can be adjusted by means of an essentially vertical actuating rod 51, opening or closing the discharge opening 48 depending on the operating position.
  • the actuation rod 51 is adjusted by means of an electric motor (not shown in more detail).
  • a stroke limit stop 83 is provided to limit the stroke movement.
  • a flat filter 50 formed from a deformable material, for example fabric, machine screen or the like, which is shaped in the shape of a cone frame. provided, which is fastened on its outer circumference to the inner wall of the separating container 45 and is connected in its central region to the actuating rod 51.
  • the arrangement is such that, in the closed position of the closure body 47, the flat filter 50 forms a cone jacket, the tip of which touches approximately the top of the separator tank 45, while the lower edge of the cone jacket is attached to the separator tank 45 at a distance above the entry opening 46 .
  • the air outlet opening is at a distance above the flat filter 50 and leads to the suction fan 21 (FIG. 1). Due to the conveying air, the fuel granulate passes through the entry opening 46 into the suction container 45.
  • the flat filter 50 in the shape of a cone shell is flowed towards from the underside. The fuel granulate collects in the separating container 45 or is deposited on the underside of the false filter 50.
  • the discharge opening 48 is closed by means of the closure body 47 during this process.
  • the discharge opening 48 is opened so that the fuel granules can fall into the storage container 52 located underneath.
  • the discharge opening 48 is opened by axially adjusting the actuating rod 51 by means of the electric motor.
  • the flat filter 50 is forcibly turned inside out and cleaned in the process. This position is shown in Fig. 6 with dash-dotted lines. The cleaning effect is further enhanced by the widening of the stitches when inverted and by the opening at the stroke limit stop 83.
  • FIG. 7 shows an enlarged partial illustration of the intermediate container 31 according to FIG. 6 in section.
  • the discharge openings 48 are conical and the closure body 47 closing this opening is conical.
  • the breech block 47 is screwed to the actuating rod 51.
  • the wall of the conical separating container 45 is bent at a distance below the entry opening 46, the lower part of the separating container being smaller
  • the flat filter 50 can e.g. a fabric made of plastic, especially polyamide or polypropylene, and e.g. have a mesh size of 15 to 25 ⁇ .
  • the actuating rod 51 can e.g. made of light metal, e.g. Aluminum.
  • FIG. 8 shows the mounting of the actuating rod 51 on the upper part of the separating container 45 on an enlarged scale.
  • a herbhol ⁇ or closing spring 84 is provided, "which is disposed in a spring” cage 85 and acting on a plate 86 on the operating rod 51, a manual operating knob serves for manual actuation 87th.
  • the flat filter could also be essentially flat, for example.
  • FIG. 9 shows an intermediate container 31 as a combination of the two intermediate containers according to FIGS. 3 and 6.
  • a cyclone 36 is used on the one hand and a cyclone on the other Flat filter 50 used.
  • the intermediate container is designed in its lower part the same as in the embodiment according to FIG. 3. The possibly not completely dedusted air passes through the air outlet opening 35 after passing through the
  • An air outlet opening 89 is provided on the upper side of the separating container 11, to which the suction fan 21 (not shown) is assigned.
  • the cone-shaped flat filter 50 made of deformable material, for example fabric, machine screen or the like. provided that on its outer Is attached circumferentially to the inner wall of the separating container 88 and is connected in its central region to the actuating rod 91.
  • the flat filter 50 forms a conical jacket. The conveying air sucked into the second separating container 88 via the entry opening 90, possibly also containing dust, flows towards the cone-shaped flat filter 50 from the underside, so that the dust residues collect on the underside of the flat filter 50.
  • the outlet opening 34 is opened in the manner described so that the fuel granules can fall into the storage container 52 located underneath.
  • the flat filter 50 is also forcibly turned inside out and cleaned in the process (dash-dotted position).
  • the arrangement according to FIG. 9 thus comprises two dust separators built one above the other with dust return into the material.
  • This arrangement is suitable for bulk material with a high dust content due to the dust pre-separation in the cyclone.
  • the flat filter 50 could e.g. can also be spherical or essentially flat.
  • the fuel granulate can be made of coal, Wood pellets, straw, etc. exist; and crushed or pressed.
  • the intermediate containers for dust separation from a conveying air flow described in FIGS. 3 to 9 are of course not limited to the dedusting of conveying air in the conveyance of fuel granules. Independently of the method described, they can also be used for dedusting the conveying air from other substances. While in the described embodiments for conveying the blower 21 is attached to the respective air outlet opening 35, 49, 89 with the suction side, the conveying could also be done with compressed air, for example from a blower assigned to the outlet 20 of the fuel granulate silo, such as is indicated by dashed lines in Fig. 1.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Air Transport Of Granular Materials (AREA)

Abstract

Pour pouvoir fournir des granulés de combustibles solides à des petits consommateurs, en particulier à des ménages, les granulés sont chargés dans un entrepôt central (1) dans une citerne (3) d'un camion (2) subdivisée en récipients individuels (4, 5) et sont transportés chez le consommateur. Le combustible est transféré pneumatiquement dans un petit entrepôt approprié (13) qui comprend un silo à granulés combustibles (14) et un silo à cendres (15). Après avoir vidé le récipient (5), les cendres sont amenées pneumatiquement du silo à cendres (15) vers le récipient (5) qui vient d'être vidé de façon que les cendres soient évacuées par le même camion (2). Un réservoir (52), approvisionné pneumatiquement à partir du silo à granulés (13), alimente directement le foyer (53). Les cendres accumulées dans le cendrier (55) du foyer (53), sont évacuées pneumatiquement dans un dépôt intermédiaire (23) duquel elles sont aspirées dans le camion de transport (2).
EP19830902230 1982-07-23 1983-07-20 Procede et dispositif pour la fourniture de combustibles solides aux consommateurs Withdrawn EP0118459A1 (fr)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
AT287382 1982-07-23
AT2871/82 1982-07-23
AT2873/82 1982-07-23
AT287282A AT377196B (de) 1982-07-23 1982-07-23 Vorrichtung zur abtrennung von feststoffen fuer eine pneumatische foerdereinrichtung, insbesondere saugfoerdereinrichtung, fuer koernige, rieselfaehige feststoffe
AT287182 1982-07-23
AT2872/82 1982-07-23
AT344182 1982-09-14
AT3441/82 1982-09-14

Publications (1)

Publication Number Publication Date
EP0118459A1 true EP0118459A1 (fr) 1984-09-19

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830902230 Withdrawn EP0118459A1 (fr) 1982-07-23 1983-07-20 Procede et dispositif pour la fourniture de combustibles solides aux consommateurs

Country Status (3)

Country Link
EP (1) EP0118459A1 (fr)
AU (1) AU1774383A (fr)
WO (1) WO1984000600A1 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2651031B1 (fr) * 1989-08-16 1991-10-25 Colas Des Francs Hubert Dispositif permettant l'alimentation automatique d'une chaufferie charbons en grains avec reprise automatique des scories
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