EP3080534B1 - Method and arrangement for drying particulate material and use of the method or of the arrangement - Google Patents
Method and arrangement for drying particulate material and use of the method or of the arrangement Download PDFInfo
- Publication number
- EP3080534B1 EP3080534B1 EP13814485.2A EP13814485A EP3080534B1 EP 3080534 B1 EP3080534 B1 EP 3080534B1 EP 13814485 A EP13814485 A EP 13814485A EP 3080534 B1 EP3080534 B1 EP 3080534B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- venturi dryer
- drying section
- venturi
- feeding
- dryer
- 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.)
- Active
Links
- 238000001035 drying Methods 0.000 title claims description 137
- 239000011236 particulate material Substances 0.000 title claims description 80
- 238000000034 method Methods 0.000 title claims description 39
- 239000000463 material Substances 0.000 claims description 40
- 239000004058 oil shale Substances 0.000 claims description 11
- 239000012530 fluid Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 description 21
- 238000000926 separation method Methods 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 239000003079 shale oil Substances 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000012717 electrostatic precipitator Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Images
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
- F26B3/10—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 carrying the materials or objects to be dried with it
-
- 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
- F26B17/10—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers
- F26B17/101—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers the drying enclosure having the shape of one or a plurality of shafts or ducts, e.g. with substantially straight and vertical axis
- F26B17/103—Machines or apparatus for drying materials in loose, plastic, or fluidised form, e.g. granules, staple fibres, with progressive movement with movement performed by fluid currents, e.g. issuing from a nozzle, e.g. pneumatic, flash, vortex or entrainment dryers the drying enclosure having the shape of one or a plurality of shafts or ducts, e.g. with substantially straight and vertical axis with specific material feeding arrangements, e.g. combined with disintegrating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/001—Handling, e.g. loading or unloading arrangements
Definitions
- the invention relates to a method for drying particulate material such as hydrocarbonous particulate material, for example oil shale, as defined in the preamble of independent claim 1.
- the invention also relates to an arrangement for drying particulate material such as hydrocarbonous particulate material, for example oil shale, as defined in the preamble of independent claim 9.
- the invention relates also to the use of the method or to the use of the arrangement as defined in claim 17.
- the invention relates especially to drying of hydrocarbonous particulate material in the form of shale oil.
- the method and arrangement of the invention can however also be utilized for drying other kind of particulate matter.
- a risk is present that particulate material falls from the drying section of the venturi dryer through the venturi throat into the gas feeding section of the venturi dryer, where the temperature is relative high, for example 400 to 500°C.
- This high temperature causes the temperature of the particulate material present in the gas feeding section of the venturi dryer to raise i.e. to causing the hydrocarbonous particulate material to overheat and consequently to cause hydrocarbon and/or CO emissions.
- a method for drying particulate material according to the preamble of claim 1 and an arrangement for drying particulate material according to the preamble of claim 9 are disclosed in GB1467744 .
- the object of the invention is to provide a method and an arrangement for drying particulate material such as hydrocarbonous particulate material, for example oil shale, that lowers the risk to cause undesired emissions.
- particulate material such as hydrocarbonous particulate material, for example oil shale
- the method for drying particulate material such as hydrocarbonous particulate material, for example oil shale, of the invention is characterized by the definition of independent claim 1.
- Preferred embodiments of the method are defined in the dependent claims 2 to 8.
- the arrangement for drying particulate material such as hydrocarbonous particulate material, for example oil shale, of the invention is correspondingly characterized by the definition of independent claim 9.
- the invention relates also to the use of the method as defined in any of the claims 1 to 8 or the arrangement as defined in any of the claims 9 to 16 for drying particulate material in the form of shale oil as defined in claim 17.
- the invention is based on the idea of feeding particulate material at several points into the drying section of the venturi dryer. This leads to a more even distribution of particulate material in the drying section of the venturi dryer, which in turn lowers the risk that particulate material falls from the drying section of the venturi dryer through the venturi throat into the gas feeding section of the venturi dryer.
- the screw feeders are connected to the drying section of the venturi dryer at feeding openings so that the central axis of the venturi dryer is uncut by imaginary extension of the rotation axis of the screw feeders.
- the advantage of this is that particulate material is not directed towards the middle of the inner space of the drying section of the venturi dryer where it can fall into the venturi throat.
- the screw feeders are connected to the drying section of the venturi dryer at feeding openings so that the feeding openings at which the screw feeders opens into the drying section of the venturi dryer are provided symmetrically with respect to the central axis of the venturi dryer. This leads to an even distribution of particulate material in the drying section of the venturi dryer, because the feeding openings are situated as far as possible from each other.
- the figures show examples of methods and apparatuses for drying particulate material such as hydrocarbonous particulate material, for example oil shale.
- particulate material such as hydrocarbonous particulate material, for example oil shale
- hydrocarbonous particulate material for example oil shale
- the method comprises a providing step for providing a venturi dryer 1 having a venturi throat 2 and a drying section 3 in fluid connection with the venturi throat 2, and for providing a material feeding means 4 for feeding particulate material 10 from a particulate material source 5 into the drying section 3 of the venturi dryer 1, wherein the venturi dryer 1 having an inner space (not marked with a reference numeral) symmetrical with respect to a central axis B of the inner space of the venturi dryer 1.
- the method comprises a material feeding step for feeding particulate material 10 from the particulate material source 5 into the drying section 3 of the venturi dryer by means of the material feeding means 4.
- the method comprises a gas feeding step for feeding gas 11 from a gas feeding section 9 of the venturi dryer 1 through the venturi throat 2 of the venturi dryer 1 into the drying section 3 of the venturi dryer 1 and through particulate material 10 in the drying section 3 of the venturi dryer 1.
- the gas 11 can for example be hot gas containing oxygen.
- the gas 11 can for example be flue gas originating from a combustion process (not shown in the figures).
- the gas feeding step may include feeding gas 11 from a gas source (not shown in the drawings) into the gas feeding section 9 of the venturi dryer 1.
- the gas 11 that is fed in the gas feeding step may have a temperature between 400 and 500°C, for example about 450°C.
- the particulate material 10 that is fed in the material feeding step from the particulate material source 5 may have a temperature of about 20°C or the temperature of the ambient air surrounding the particulate material source 5.
- the temperature in the drying section 3 of the venturi dryer 1 may be between 100 °C and 200°C, for example 150°C.
- the providing step includes providing a material feeding means 4 comprising at least two screw feeders 6 each comprising a spiral blade 7 rotatable about a rotation axis C so as to feed particulate material 10 by rotating the spiral blade 7 about the rotation axis C from a particulate material source 5 to the drying section 3 of the venturi dryer 1.
- a material feeding means 4 comprising at least two screw feeders 6 each comprising a spiral blade 7 rotatable about a rotation axis C so as to feed particulate material 10 by rotating the spiral blade 7 about the rotation axis C from a particulate material source 5 to the drying section 3 of the venturi dryer 1.
- the method comprises connecting each of said at least two screw feeders 6 to the drying section 3 of the venturi dryer 1 so that each of said at least two screw feeders 6 opening up into the drying section 3 of the venturi dryer 1 at a feeding opening 8 between the screw feeder 6 and the drying section 3 of the venturi dryer 1.
- the material feeding step includes rotating the spiral blade 7 of each of said at least two screw feeders 6 about the rotation axis C of respective screw feeder 6 to feed feeding particulate material 10 from a particulate material source 5 into the drying section 3 of the venturi dryer 1.
- the separation means can for example comprise gas-solid separation means such as a cyclone, an electrostatic precipitator, a bag filter or a candle filter.
- the method includes preferably, but not necessarily, connecting at least one of said at least two screw feeders 6 to the drying section 3 of the venturi dryer so that the central axis B of the inner space of the venturi dryer 1is uncut by an imaginary extension 12 of the rotation axis C of said at least one screw feeder 6 of said at least two screw feeders 6.
- the method includes preferably, but not necessarily, connecting each of said at least two screw feeders 6 to the drying section 3 of the venturi dryer so that the central axis B of the inner space of the venturi dryer 1is uncut by an imaginary extension 12 of the rotation axis C of each screw feeder 6.
- the method includes preferably, but not necessarily, connecting each of said at least two screw feeders 6 to the drying section 3 of the venturi dryer 1 so that the feeding openings 8 at which said at least two screw feeders 6 opens into the drying section 3 of the venturi dryer 1 are provided symmetrically with respect to the central axis B of the inner space of the venturi dryer 1.
- the providing step may, as shown in the embodiment shown in figure 2 , include providing a material feeding means 4 comprising two screw feeders 6 each comprising a spiral blade 7 rotatable about a rotation axis C.
- This embodiment of the method comprises connecting the two screw feeders 6 to the drying section 3 of the venturi dryer 1 so that the feeding openings 8 between each screw feeder 6 and the drying section 3 of the venturi dryer 1 are positioned under 120 degrees, preferably under 90 degrees, with respect to each other about the central axis B of the inner space of the venturi dryer 1.
- the providing step may, as shown in the embodiment shown in figure 3 , include providing a material feeding means 4 comprising two screw feeders 6 each comprising a spiral blade 7 rotatable about a rotation axis C.
- This embodiment of the method comprises connecting the two screw feeders 6 to the drying section 3 of the venturi dryer 1 so that the feeding openings 8 between each screw feeder 6 and the drying section 3 of the venturi dryer 1 are positioned substantially 180 degrees with respect to each other about the central axis B of the inner space of the venturi dryer 1.
- the providing step may, as shown in the embodiment shown in figure 4 , include providing a material feeding means 4 comprising three screw feeders 6 each comprising a spiral blade 7 rotatable about a rotation axis C.
- This embodiment of the method comprises connecting the three screw feeders 6 to the drying section 3 of the venturi dryer 1 so that the feeding openings 8 between each screw feeder 6 and the drying section 3 of the venturi dryer 1 are positioned substantially 120 degrees with respect to each other about the central axis B of the inner space of the venturi dryer 1.
- the providing step may, as shown in the embodiment shown in figure 5 , include providing a material feeding means 4 comprising four screw feeders 6 each comprising a spiral blade 7 rotatable about an rotation axis C.
- This embodiment of the method comprises connecting the four screw feeders 6 to the drying section 3 of the venturi dryer 1 so that the feeding openings 8 between each screw feeder 6 and the drying section 3 of the venturi dryer 1 are positioned substantially 90 degrees with respect to each other about the central axis B of the inner space of the venturi dryer 1.
- the method includes preferably, but not necessarily, connecting each of said at least two screw feeders 6 to the drying section 3 of the venturi dryer 1 so that each of the feeding openings 8 between each screw feeder 6 and the drying section 3 of the venturi dryer are positioned substantially at the same position along the central axis B of the inner space of the venturi dryer 1.
- the method includes preferably, but not necessarily, connecting each of said at least two screw feeders 6 to the drying section 3 of the venturi dryer 1 so that each of the feeding openings 8 between each screw feeder 6 and the drying section 3 of the venturi dryer 1 are positioned substantially at the same vertical level i.e. height of the drying section 3 of the venturi dryer 1.
- the providing step includes providing at least one screw feeder 6 having a right-handed spiral blade 7 and rotating said right-handed spiral blade 7 of at least one screw feeder 6 anti-clockwise in the material feeding step
- the providing step includes providing at least one screw feeder 6 having a left-handed spiral blade 7 and by rotating said left-handed spiral blade 7 of at least one screw feeder 6 clockwise in the material feeding step.
- This embodiment of the method includes preferably, but not necessarily, connecting said at least one screw feeder 6 having a right-handed spiral blade 7 to the drying section 3 of the venturi dryer 1 and connecting said at least one screw feeder 6 having a left-handed spiral blade 7 to the drying section 3 of the venturi dryer 1 so that both said at least one screw feeder 6 having a right-handed spiral blade 7 and said at least one screw feeder 6 having a left-handed spiral blade 7 feed particulate material 10 into the drying section 3 of the venturi dryer 1 at the side of the feeding opening 8 between respective screw feeder 6 and the drying section 3 of the venturi dryer 1 that is at a greater distance from the central axis B of the inner space of the venturi dryer 1 than the other side of the feeding opening 8 between respective screw feeder 6 and the drying section 3 of the venturi dryer 1.
- particulate material 10 is therefore fed into the drying section 3 of the venturi dryer 1 at locations being as far as possible from each other.
- the number of the screw feeders is three, as in fig 4 , or four, as in fig 5 , all the screw feeders 6 could either have a left-handed spiral blade 7 or a right-handed spiral blade 7.
- the screw feeders 6 could be arranged in pairs so that material feeding means 4 for feeding particulate material 10 from a particulate material source 5 into the drying section 3 of the venturi dryer 1 have two screw feeders having a left-handed spiral blade 7 and two screw feeders having a right-handed spiral blade 7.
- the control of an electric motor (not shown in the drawings) for rotation of a left-handed spiral blade 7 of a screw feeder 6 or of an electric motor (not shown in the drawings) for rotation of a right-handed spiral blade 7 of a screw feeder 6 can for example be done by means of an electronic steering means (not shown in the drawings) comprising an encoder (not shown in the drawings).
- a such electronic steering means may provide for phase shifting steering the rotation direction and rotation speed.
- the method includes preferably, but not necessarily, connecting each of said at least two screw feeders 6 to the drying section 3 of the venturi dryer 1 so that the rotation axis C of said at least two screw feeders 6 extends in a mirror-like manner in relation to each other with respect to a plane (not shown in the drawings) extending in the direction of the central axis B of the inner space of the venturi dryer 1.
- a plane not shown in the drawings
- particulate material such as hydrocarbonous particulate material for example oil shale an some embodiments and variants thereof will be described in greater detail.
- the arrangement comprises a venturi dryer 1 having a venturi throat 2 and a drying section 3 in fluid connection with the venturi throat 2, and wherein the venturi dryer 1 having an inner space that is symmetrical with respect to a central axis B.
- the arrangement comprises material feeding means 4 for feeding particulate material 10 from a particulate material source 5 into the drying section 3 of the venturi dryer 1.
- the venturi dryer 1 comprises gas feeding section 9 for feeding gas 11 through the venturi throat 2 of the venturi dryer 1 into the drying section 3 of the venturi dryer 1.
- the arrangement may include a gas source (not shown in the drawings) in fluid connection with the gas feeding section 9 of the venturi dryer 1.
- the material feeding means 4 for feeding particulate material 10 from a particulate material source 5 into the drying section 3 of the venturi dryer 1 comprises at least two screw feeders 6 comprising a spiral blade 7 rotatable about an rotation axis C so as to feed particulate material 10 from a particulate material source 5 to the drying section 3 of the venturi dryer 1.
- Each of said at least two screw feeders 6 opening up into the drying section 3 of the venturi dryer 1 at a feeding opening 8 between the screw feeder 6 and the drying section 3 of the venturi dryer 1.
- At least one of said at least two screw feeders 6 is preferably, but not necessarily, connected to the drying section 3 of the venturi dryer 1 so that the central axis B of the inner space of the venturi dryer 1is uncut by an imaginary extension 12 of the rotation axis of said at least one screw feeder 6 of said at least two screw feeders 6.
- Each screw feeder 6 of said arrangement is preferably, but not necessarily, connected to the drying section 3 of the venturi dryer 1 so that the central axis B of the venturi dryer is uncut by an imaginary extension 12 of the rotation axis C of a screw feeder 6.
- the feeding openings 8 at which each of said at least two screw feeders 6 opens into the drying section 3 of the venturi dryer 1 is preferably, but not necessarily, provided symmetrically with respect to the central axis B of the inner space of the venturi dryer 1.
- the material feeding means 4 of the arrangement may, as shown in figure 3 , comprise two screw feeders 6 each comprising a spiral blade 7 rotatable about an rotation axis C, and the two screw feeders 6 may be connected to the drying section 3 of the venturi dryer 1 so that the feeding openings 8 between each screw feeder 6 and the drying section 3 of the venturi dryer 1 are positioned under 120 degrees, preferably under 90 degrees, with respect to each other about the central axis B of the venturi dryer.
- the material feeding means 4 of the arrangement may, as shown in figure 3 , comprise two screw feeders 6 each comprising a spiral blade 7 rotatable about an rotation axis C, and the two screw feeders 6 may be connected to the drying section 3 of the venturi dryer 1 so that the feeding openings 8 between each screw feeder 6 and the drying section 3 of the venturi dryer 1 are positioned substantially 180 degrees with respect to each other about the central axis B of the venturi dryer.
- the material feeding means 4 of the arrangement may, as shown in figure 4 , comprise three screw feeders 6 comprising a spiral blade 7 rotatable about an rotation axis C, and the three screw feeders 6 may be connected to the drying section 3 of the venturi dryer 1 so that the feeding openings 8 between each screw feeder 6 and the drying section 3 of the venturi dryer 1 are positioned substantially 120 degrees with respect to each other about the central axis B of the inner space of the venturi dryer 1.
- the material feeding means 4 of the arrangement may, as shown in figure 5 , comprise four screw feeders 6 comprising a spiral blade 7 rotatable about an rotation axis C, and the four screw feeders 6 may be connected to the drying section 3 of the venturi dryer 1 so that the feeding openings 8 between each screw feeder 6 and the drying section 3 of the venturi dryer 1 are positioned substantially 90 degrees with respect to each other about the central axis B of the venturi dryer.
- Each screw feeder 6 of the arrangement is preferably, but not necessarily, connected to the drying section 3 of the venturi dryer 1 so that each of the feeding openings 8 are positioned substantially at the same position along the central axis B of the inner space of the venturi dryer 1.
- Each screw feeder 6 of the arrangement are preferably, but not necessarily, connected to the drying section 3 of the venturi dryer 1 so that each of the feeding openings 8 are positioned substantially at the same vertical level i.e. height of the drying section 3 of the venturi dryer 1.
- the material feeding means 4 for feeding particulate material 10 from a particulate material source 5 into the drying section 3 of the venturi dryer 1 comprises in an embodiment of the arrangement at least one screw feeder 6 having a right-handed spiral blade 7, and at least one screw feeder 6 having a left-handed spiral blade 7 .
- said at least one screw feeder 6 having a right-handed spiral blade 7 is preferably, but not necessarily, connected to the drying section 3 of the venturi dryer 1 and said at least one screw feeder 6 having a left-handed spiral blade 7 is preferably, but not necessarily, connected to the drying section 3 of the venturi dryer 1 so that both said at least one screw feeder 6 having a right-handed spiral blade 7 and said at least one screw feeder 6 having a left-handed spiral blade 7 is configured to feed particulate material 10 into the drying section 3 of the venturi dryer 1 at the side of the feeding opening 8 between respective screw feeder 6 and the drying section 3 of the venturi dryer 1 that is at a greater distance from the central axis B of the inner space of the venturi dryer 1 than the other side of the feeding opening 8 between respective screw feeder 6 and the drying section 3 of the venturi dryer 1.
- the screw feeders 6 could be arranged in pairs so that material feeding means 4 for feeding particulate material 10 from a particulate material source 5 into the drying section 3 of the venturi dryer 1 have two screw feeders having a left-handed spiral blade 7 and two screw feeders having a right-handed spiral blade 7.
- the control of an electric motor (not shown in the drawings) for rotation of a left-handed spiral blade 7 of a screw feeder 6 or of an electric motor (not shown in the drawings) for rotation of a right-handed spiral blade 7 of a screw feeder 6 can for example be done by means of an electronic steering means (not shown in the drawings) comprising an encoder (not shown in the drawings).
- a such electronic steering means may provide for phase shifting steering the rotation direction and rotation speed.
- the rotation axis of said at least two screw feeders 6 may, as shown in figure 2 , extend in a mirror-like manner in relation to each other with respect to a plane extending in the direction of the central axis B of the venturi dryer.
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)
Description
- The invention relates to a method for drying particulate material such as hydrocarbonous particulate material, for example oil shale, as defined in the preamble of
independent claim 1. - The invention also relates to an arrangement for drying particulate material such as hydrocarbonous particulate material, for example oil shale, as defined in the preamble of
independent claim 9. The invention relates also to the use of the method or to the use of the arrangement as defined in claim 17. The invention relates especially to drying of hydrocarbonous particulate material in the form of shale oil. The method and arrangement of the invention can however also be utilized for drying other kind of particulate matter. - Especially when drying particulate material in the form of hydrocarbonous particulate material by means of a venturi dryer a risk is present that particulate material falls from the drying section of the venturi dryer through the venturi throat into the gas feeding section of the venturi dryer, where the temperature is relative high, for example 400 to 500°C. This high temperature causes the temperature of the particulate material present in the gas feeding section of the venturi dryer to raise i.e. to causing the hydrocarbonous particulate material to overheat and consequently to cause hydrocarbon and/or CO emissions. A method for drying particulate material according to the preamble of
claim 1 and an arrangement for drying particulate material according to the preamble ofclaim 9 are disclosed inGB1467744 - The object of the invention is to provide a method and an arrangement for drying particulate material such as hydrocarbonous particulate material, for example oil shale, that lowers the risk to cause undesired emissions.
- The method for drying particulate material such as hydrocarbonous particulate material, for example oil shale, of the invention is characterized by the definition of
independent claim 1. Preferred embodiments of the method are defined in thedependent claims 2 to 8. The arrangement for drying particulate material such as hydrocarbonous particulate material, for example oil shale, of the invention is correspondingly characterized by the definition ofindependent claim 9. - Preferred embodiments of the arrangement are defined in the
dependent claims 10 to 16. - The invention relates also to the use of the method as defined in any of the
claims 1 to 8 or the arrangement as defined in any of theclaims 9 to 16 for drying particulate material in the form of shale oil as defined in claim 17. - The invention is based on the idea of feeding particulate material at several points into the drying section of the venturi dryer. This leads to a more even distribution of particulate material in the drying section of the venturi dryer, which in turn lowers the risk that particulate material falls from the drying section of the venturi dryer through the venturi throat into the gas feeding section of the venturi dryer. According to the invention the screw feeders are connected to the drying section of the venturi dryer at feeding openings so that the central axis of the venturi dryer is uncut by imaginary extension of the rotation axis of the screw feeders. The advantage of this is that particulate material is not directed towards the middle of the inner space of the drying section of the venturi dryer where it can fall into the venturi throat. According to the invention the screw feeders are connected to the drying section of the venturi dryer at feeding openings so that the feeding openings at which the screw feeders opens into the drying section of the venturi dryer are provided symmetrically with respect to the central axis of the venturi dryer. This leads to an even distribution of particulate material in the drying section of the venturi dryer, because the feeding openings are situated as far as possible from each other.
- In the following the invention will described in more detail by referring to the figures, of which
-
Figure 1 is a principle sketch of an embodiment of the arrangement, -
Figure 2 shows a configuration of section A-A infigure 1 , -
Figure 3 shows another configuration of section A-A infigure 1 , -
Figure 4 shows yet another configuration of section A-A infigure 1 , and -
Figure 5 shows still another configuration of section A-A infigure 1 . - The figures show examples of methods and apparatuses for drying particulate material such as hydrocarbonous particulate material, for example oil shale.
- First the method for drying particulate material such as hydrocarbonous particulate material, for example oil shale, and some preferred embodiments and variants of the method will be described in greater detail.
- The method comprises a providing step for providing a
venturi dryer 1 having aventuri throat 2 and adrying section 3 in fluid connection with theventuri throat 2, and for providing a material feeding means 4 for feedingparticulate material 10 from aparticulate material source 5 into thedrying section 3 of theventuri dryer 1, wherein theventuri dryer 1 having an inner space (not marked with a reference numeral) symmetrical with respect to a central axis B of the inner space of theventuri dryer 1. - The method comprises a material feeding step for feeding
particulate material 10 from theparticulate material source 5 into thedrying section 3 of the venturi dryer by means of the material feeding means 4. - The method comprises a gas feeding step for
feeding gas 11 from agas feeding section 9 of theventuri dryer 1 through theventuri throat 2 of theventuri dryer 1 into thedrying section 3 of theventuri dryer 1 and throughparticulate material 10 in thedrying section 3 of theventuri dryer 1. Thegas 11 can for example be hot gas containing oxygen. Thegas 11 can for example be flue gas originating from a combustion process (not shown in the figures). - The gas feeding step may include
feeding gas 11 from a gas source (not shown in the drawings) into thegas feeding section 9 of theventuri dryer 1. - The
gas 11 that is fed in the gas feeding step may have a temperature between 400 and 500°C, for example about 450°C. - The
particulate material 10 that is fed in the material feeding step from theparticulate material source 5 may have a temperature of about 20°C or the temperature of the ambient air surrounding theparticulate material source 5. - The temperature in the
drying section 3 of theventuri dryer 1 may be between 100 °C and 200°C, for example 150°C. - The providing step includes providing a material feeding means 4 comprising at least two
screw feeders 6 each comprising aspiral blade 7 rotatable about a rotation axis C so as to feedparticulate material 10 by rotating thespiral blade 7 about the rotation axis C from aparticulate material source 5 to thedrying section 3 of theventuri dryer 1. - The method comprises connecting each of said at least two
screw feeders 6 to thedrying section 3 of theventuri dryer 1 so that each of said at least twoscrew feeders 6 opening up into thedrying section 3 of theventuri dryer 1 at a feeding opening 8 between thescrew feeder 6 and thedrying section 3 of theventuri dryer 1. - The material feeding step includes rotating the
spiral blade 7 of each of said at least twoscrew feeders 6 about the rotation axis C ofrespective screw feeder 6 to feed feedingparticulate material 10 from aparticulate material source 5 into thedrying section 3 of theventuri dryer 1. - From the
drying section 3 of the venturi dryer dried particulate material and gas may be fed to separation means (not shown in the figures) for separating gas from dried particulate material. The separation means can for example comprise gas-solid separation means such as a cyclone, an electrostatic precipitator, a bag filter or a candle filter. - The method includes preferably, but not necessarily, connecting at least one of said at least two
screw feeders 6 to thedrying section 3 of the venturi dryer so that the central axis B of the inner space of the venturi dryer 1is uncut by animaginary extension 12 of the rotation axis C of said at least onescrew feeder 6 of said at least twoscrew feeders 6. - The method includes preferably, but not necessarily, connecting each of said at least two
screw feeders 6 to thedrying section 3 of the venturi dryer so that the central axis B of the inner space of the venturi dryer 1is uncut by animaginary extension 12 of the rotation axis C of eachscrew feeder 6. - The method includes preferably, but not necessarily, connecting each of said at least two
screw feeders 6 to thedrying section 3 of theventuri dryer 1 so that thefeeding openings 8 at which said at least twoscrew feeders 6 opens into thedrying section 3 of theventuri dryer 1 are provided symmetrically with respect to the central axis B of the inner space of theventuri dryer 1. - The providing step may, as shown in the embodiment shown in
figure 2 , include providing a material feeding means 4 comprising twoscrew feeders 6 each comprising aspiral blade 7 rotatable about a rotation axis C. This embodiment of the method comprises connecting the twoscrew feeders 6 to thedrying section 3 of theventuri dryer 1 so that thefeeding openings 8 between eachscrew feeder 6 and thedrying section 3 of theventuri dryer 1 are positioned under 120 degrees, preferably under 90 degrees, with respect to each other about the central axis B of the inner space of theventuri dryer 1. - The providing step may, as shown in the embodiment shown in
figure 3 , include providing a material feeding means 4 comprising twoscrew feeders 6 each comprising aspiral blade 7 rotatable about a rotation axis C. This embodiment of the method comprises connecting the twoscrew feeders 6 to thedrying section 3 of theventuri dryer 1 so that thefeeding openings 8 between eachscrew feeder 6 and thedrying section 3 of theventuri dryer 1 are positioned substantially 180 degrees with respect to each other about the central axis B of the inner space of theventuri dryer 1. - The providing step may, as shown in the embodiment shown in
figure 4 , include providing a material feeding means 4 comprising threescrew feeders 6 each comprising aspiral blade 7 rotatable about a rotation axis C. This embodiment of the method comprises connecting the threescrew feeders 6 to thedrying section 3 of theventuri dryer 1 so that thefeeding openings 8 between eachscrew feeder 6 and thedrying section 3 of theventuri dryer 1 are positioned substantially 120 degrees with respect to each other about the central axis B of the inner space of theventuri dryer 1. - The providing step may, as shown in the embodiment shown in
figure 5 , include providing a material feeding means 4 comprising fourscrew feeders 6 each comprising aspiral blade 7 rotatable about an rotation axis C. This embodiment of the method comprises connecting the fourscrew feeders 6 to thedrying section 3 of theventuri dryer 1 so that thefeeding openings 8 between eachscrew feeder 6 and thedrying section 3 of theventuri dryer 1 are positioned substantially 90 degrees with respect to each other about the central axis B of the inner space of theventuri dryer 1. - The method includes preferably, but not necessarily, connecting each of said at least two
screw feeders 6 to thedrying section 3 of theventuri dryer 1 so that each of thefeeding openings 8 between eachscrew feeder 6 and thedrying section 3 of the venturi dryer are positioned substantially at the same position along the central axis B of the inner space of theventuri dryer 1. - The method includes preferably, but not necessarily, connecting each of said at least two
screw feeders 6 to thedrying section 3 of theventuri dryer 1 so that each of thefeeding openings 8 between eachscrew feeder 6 and thedrying section 3 of theventuri dryer 1 are positioned substantially at the same vertical level i.e. height of thedrying section 3 of theventuri dryer 1. - In an embodiment of the method, the providing step includes providing at least one
screw feeder 6 having a right-handedspiral blade 7 and rotating said right-handedspiral blade 7 of at least onescrew feeder 6 anti-clockwise in the material feeding step In this embodiment of the method, the providing step includes providing at least onescrew feeder 6 having a left-handedspiral blade 7 and by rotating said left-handedspiral blade 7 of at least onescrew feeder 6 clockwise in the material feeding step. This embodiment of the method includes preferably, but not necessarily, connecting said at least onescrew feeder 6 having a right-handedspiral blade 7 to thedrying section 3 of theventuri dryer 1 and connecting said at least onescrew feeder 6 having a left-handedspiral blade 7 to thedrying section 3 of theventuri dryer 1 so that both said at least onescrew feeder 6 having a right-handedspiral blade 7 and said at least onescrew feeder 6 having a left-handedspiral blade 7 feedparticulate material 10 into thedrying section 3 of theventuri dryer 1 at the side of thefeeding opening 8 betweenrespective screw feeder 6 and thedrying section 3 of theventuri dryer 1 that is at a greater distance from the central axis B of the inner space of theventuri dryer 1 than the other side of the feeding opening 8 betweenrespective screw feeder 6 and thedrying section 3 of theventuri dryer 1. In this embodimentparticulate material 10 is therefore fed into thedrying section 3 of theventuri dryer 1 at locations being as far as possible from each other. On the other hand, if the number of the screw feeders is three, as infig 4 , or four, as infig 5 , all thescrew feeders 6 could either have a left-handedspiral blade 7 or a right-handedspiral blade 7. On the other hand, if the number of thescrew feeders 6 is four, as infig 5 , thescrew feeders 6 could be arranged in pairs so that material feeding means 4 for feedingparticulate material 10 from aparticulate material source 5 into thedrying section 3 of theventuri dryer 1 have two screw feeders having a left-handedspiral blade 7 and two screw feeders having a right-handedspiral blade 7. - The control of an electric motor (not shown in the drawings) for rotation of a left-
handed spiral blade 7 of ascrew feeder 6 or of an electric motor (not shown in the drawings) for rotation of a right-handed spiral blade 7 of ascrew feeder 6 can for example be done by means of an electronic steering means (not shown in the drawings) comprising an encoder (not shown in the drawings). A such electronic steering means may provide for phase shifting steering the rotation direction and rotation speed. - The method includes preferably, but not necessarily, connecting each of said at least two
screw feeders 6 to thedrying section 3 of theventuri dryer 1 so that the rotation axis C of said at least twoscrew feeders 6 extends in a mirror-like manner in relation to each other with respect to a plane (not shown in the drawings) extending in the direction of the central axis B of the inner space of theventuri dryer 1. A such embodiment is shown infigure 2 and infigure 4 . - Next the arrangement for drying particulate material such as hydrocarbonous particulate material for example oil shale an some embodiments and variants thereof will be described in greater detail.
- The arrangement comprises a
venturi dryer 1 having aventuri throat 2 and adrying section 3 in fluid connection with theventuri throat 2, and wherein theventuri dryer 1 having an inner space that is symmetrical with respect to a central axis B. - The arrangement comprises material feeding means 4 for feeding
particulate material 10 from aparticulate material source 5 into thedrying section 3 of theventuri dryer 1. - The
venturi dryer 1 comprisesgas feeding section 9 for feedinggas 11 through theventuri throat 2 of theventuri dryer 1 into thedrying section 3 of theventuri dryer 1. - The arrangement may include a gas source (not shown in the drawings) in fluid connection with the
gas feeding section 9 of theventuri dryer 1. - The material feeding means 4 for feeding
particulate material 10 from aparticulate material source 5 into thedrying section 3 of theventuri dryer 1 comprises at least twoscrew feeders 6 comprising aspiral blade 7 rotatable about an rotation axis C so as to feedparticulate material 10 from aparticulate material source 5 to thedrying section 3 of theventuri dryer 1. - Each of said at least two
screw feeders 6 opening up into thedrying section 3 of theventuri dryer 1 at afeeding opening 8 between thescrew feeder 6 and thedrying section 3 of theventuri dryer 1. - At least one of said at least two
screw feeders 6 is preferably, but not necessarily, connected to thedrying section 3 of theventuri dryer 1 so that the central axis B of the inner space of the venturi dryer 1is uncut by animaginary extension 12 of the rotation axis of said at least onescrew feeder 6 of said at least twoscrew feeders 6. - Each
screw feeder 6 of said arrangement is preferably, but not necessarily, connected to thedrying section 3 of theventuri dryer 1 so that the central axis B of the venturi dryer is uncut by animaginary extension 12 of the rotation axis C of ascrew feeder 6. - The
feeding openings 8 at which each of said at least twoscrew feeders 6 opens into thedrying section 3 of theventuri dryer 1 is preferably, but not necessarily, provided symmetrically with respect to the central axis B of the inner space of theventuri dryer 1. - The material feeding means 4 of the arrangement may, as shown in
figure 3 , comprise twoscrew feeders 6 each comprising aspiral blade 7 rotatable about an rotation axis C, and the twoscrew feeders 6 may be connected to thedrying section 3 of theventuri dryer 1 so that thefeeding openings 8 between eachscrew feeder 6 and thedrying section 3 of theventuri dryer 1 are positioned under 120 degrees, preferably under 90 degrees, with respect to each other about the central axis B of the venturi dryer. - The material feeding means 4 of the arrangement may, as shown in
figure 3 , comprise twoscrew feeders 6 each comprising aspiral blade 7 rotatable about an rotation axis C, and the twoscrew feeders 6 may be connected to thedrying section 3 of theventuri dryer 1 so that thefeeding openings 8 between eachscrew feeder 6 and thedrying section 3 of theventuri dryer 1 are positioned substantially 180 degrees with respect to each other about the central axis B of the venturi dryer. - The material feeding means 4 of the arrangement may, as shown in
figure 4 , comprise threescrew feeders 6 comprising aspiral blade 7 rotatable about an rotation axis C, and the threescrew feeders 6 may be connected to thedrying section 3 of theventuri dryer 1 so that thefeeding openings 8 between eachscrew feeder 6 and thedrying section 3 of theventuri dryer 1 are positioned substantially 120 degrees with respect to each other about the central axis B of the inner space of theventuri dryer 1. - The material feeding means 4 of the arrangement may, as shown in
figure 5 , comprise fourscrew feeders 6 comprising aspiral blade 7 rotatable about an rotation axis C, and the fourscrew feeders 6 may be connected to thedrying section 3 of theventuri dryer 1 so that thefeeding openings 8 between eachscrew feeder 6 and thedrying section 3 of theventuri dryer 1 are positioned substantially 90 degrees with respect to each other about the central axis B of the venturi dryer. - Each
screw feeder 6 of the arrangement is preferably, but not necessarily, connected to thedrying section 3 of theventuri dryer 1 so that each of thefeeding openings 8 are positioned substantially at the same position along the central axis B of the inner space of theventuri dryer 1. - Each
screw feeder 6 of the arrangement are preferably, but not necessarily, connected to thedrying section 3 of theventuri dryer 1 so that each of thefeeding openings 8 are positioned substantially at the same vertical level i.e. height of thedrying section 3 of theventuri dryer 1. - The material feeding means 4 for feeding
particulate material 10 from aparticulate material source 5 into thedrying section 3 of theventuri dryer 1 comprises in an embodiment of the arrangement at least onescrew feeder 6 having a right-handed spiral blade 7, and at least onescrew feeder 6 having a left-handed spiral blade 7 . In this embodiment of the arrangement, said at least onescrew feeder 6 having a right-handed spiral blade 7 is preferably, but not necessarily, connected to thedrying section 3 of theventuri dryer 1 and said at least onescrew feeder 6 having a left-handed spiral blade 7 is preferably, but not necessarily, connected to thedrying section 3 of theventuri dryer 1 so that both said at least onescrew feeder 6 having a right-handed spiral blade 7 and said at least onescrew feeder 6 having a left-handed spiral blade 7 is configured to feedparticulate material 10 into thedrying section 3 of theventuri dryer 1 at the side of thefeeding opening 8 betweenrespective screw feeder 6 and thedrying section 3 of theventuri dryer 1 that is at a greater distance from the central axis B of the inner space of theventuri dryer 1 than the other side of thefeeding opening 8 betweenrespective screw feeder 6 and thedrying section 3 of theventuri dryer 1. On the other hand, if the number of the screw feeders is three, as infig 4 , or four, as infig 5 , all thescrew feeders 6 could either have a left-handed spiral blade 7 or a right-handed spiral blade 7. On the other hand, if the number of the screw feeders is four, as infig 5 , thescrew feeders 6 could be arranged in pairs so that material feeding means 4 for feedingparticulate material 10 from aparticulate material source 5 into thedrying section 3 of theventuri dryer 1 have two screw feeders having a left-handed spiral blade 7 and two screw feeders having a right-handed spiral blade 7. - The control of an electric motor (not shown in the drawings) for rotation of a left-
handed spiral blade 7 of ascrew feeder 6 or of an electric motor (not shown in the drawings) for rotation of a right-handed spiral blade 7 of ascrew feeder 6 can for example be done by means of an electronic steering means (not shown in the drawings) comprising an encoder (not shown in the drawings). A such electronic steering means may provide for phase shifting steering the rotation direction and rotation speed. - In the arrangement the rotation axis of said at least two
screw feeders 6 may, as shown infigure 2 , extend in a mirror-like manner in relation to each other with respect to a plane extending in the direction of the central axis B of the venturi dryer. - It is apparent to a person skilled in the art that as technology advances, the basic idea of the invention can be implemented in various ways. The invention and its embodiments are therefore not restricted to the above examples, but they may vary within the scope of the claims.
Claims (17)
- A method for drying particulate material (10) such as hydrocarbonous particulate material, for example oil shale, comprising
a providing step for providing a venturi dryer (1) having a venturi throat (2) and a drying section (3) in fluid connection with the venturi throat (2), and for providing a material feeding means (4) for feeding particulate material (10) from a particulate material source (5) into the drying section (3) of the venturi dryer (1), wherein the venturi dryer (1) has an inner space symmetrical with respect to a central axis (B),
a material feeding step for feeding particulate material (10) from the particulate material source (5) into the drying section (3) of the venturi dryer by means of the material feeding means (4), and
a gas feeding step for feeding gas (11) from a gas feeding section (9) of the venturi dryer (1) through the venturi throat (2) of the venturi dryer (1) into the drying section (3) of the venturi dryer (1) and through particulate material (10) in the drying section (3) of the venturi dryer (1),
characterized in that the providing step includes :- providing a material feeding means (4) comprising at least two screw feeders (6) comprising a spiral blade (7) rotatable about an rotation axis (C),- connecting each of said at least two screw feeders (6) so that each of said at least two screw feeders (6) opens up into the drying section (3) of the venturi dryer (1) at a feeding opening (8) between the screw feeder (6) and the drying section (3) of the venturi dryer (1), and in that the material feeding step includes rotating the spiral blade (7) of each of said at least two screw feeders (6) about a rotation axis (C) to feed feeding particulate material (10) from a particulate material source (5) into the drying section (3) of the venturi dryer (1), each of said at least two screw feeders (6) being connected to the drying section (3) of the venturi dryer (1) so that :- the central axis (B) of the inner space of the venturi dryer (1) is uncut by an imaginary extension (12) of the rotation axis (C) of each screw feeder (6)- the feeding openings (8) are provided symmetrically with respect to the central axis (B) of the inner space of the venturi dryer (1), and- each of the feeding openings (8) are positioned substantially at the same position along the central axis (B) of the inner space of the venturi dryer (1). - The method according to claim 1, characterized
by the providing step including providing a material feeding means (4) comprising two screw feeders (6) each comprising a spiral blade (7) rotatable about an rotation axis (C), and
by connecting the two screw feeders (6) to the drying section (3) of the venturi dryer (1) so that the feeding openings (8) between each screw feeder (6) and the drying section (3) of the venturi dryer (1) are positioned under 120 degrees, preferably under 90 degrees, with respect to each other about the central axis (B) of the inner space of the venturi dryer (1). - The method according to claim 1, characterized
by the providing step including providing a material feeding means (4) comprising two screw feeders (6) each comprising a spiral blade (7) rotatable about an rotation axis (C), and
by connecting the two screw feeders (6) to the drying section (3) of the venturi dryer (1) so that the feeding openings (8) between each screw feeder (6) and the drying section (3) of the venturi dryer (1) are positioned substantially 180 degrees with respect to each other about the central axis (B) of the inner space of the venturi dryer (1). - The method according to claim 1, characterized
by the providing step including providing a material feeding means (4) comprising three screw feeders (6) each comprising a spiral blade (7) rotatable about an rotation axis (C), and
by connecting the three screw feeders (6) to the drying section (3) of the venturi dryer (1) so that the feeding openings (8) between each screw feeder (6) and the drying section (3) of the venturi dryer (1) are positioned substantially 120 degrees with respect to each other about the central axis (B) of the inner space of the venturi dryer (1). - The method according to claim 1, characterized
by the providing step including providing a material feeding means (4) comprising four screw feeders (6) each comprising a spiral blade (7) rotatable about an rotation axis (C), and
by connecting the four screw feeders (6) to the drying section (3) of the venturi dryer (1) so that the feeding openings (8) between each screw feeder (6) and the drying section (3) of the venturi dryer (1) are positioned substantially 90 degrees with respect to each other about the central axis (B) of the inner space of the venturi dryer (1). - The method according to any of the claims 1 to 5, characterized
by the providing step including providing at least one screw feeder (6) having a right-handed spiral blade (7),
by rotating the spiral blade (7) of at least one screw feeder (6) having a right-handed spiral blade (7) anticlockwise in the material feeding step,
by the providing step including providing at least one screw feeder (6) having a left-handed spiral blade (7), and
by rotating the spiral blade (7) of at least one screw feeder (6) having a left-handed spiral blade (7) clockwise in the material feeding step. - The method according to claim 6, characterized
by connecting said at least one screw feeder (6) having a right-handed spiral blade (7) to the drying section (3) of the venturi dryer (1) and by connecting said at least one screw feeder (6) having a left-handed spiral blade (7) to the drying section (3) of the venturi dryer (1) so that both said at least one screw feeder (6) having a right-handed spiral blade (7) and said at least one screw feeder (6) having a left-handed spiral blade (7) feed particulate material (10) into the drying section (3) of the venturi dryer (1) at the side of the feeding opening (8) between respective screw feeder (6) and the drying section (3) of the venturi dryer (1) that is at a greater distance from the central axis (B) of the inner space of the venturi dryer (1) than the other side of the feeding opening (8) between respective screw feeder (6) and the drying section (3) of the venturi dryer (1). - The method according to any of the claims 1 to 7, characterized by connecting each of said at least two screw feeders (6) to the drying section (3) of the venturi dryer (1) so that the rotation axis of said at least two screw feeders (6) extends in a mirror-like manner in relation to each other with respect to a plane extending in the direction of the central axis (B) of the inner space of the venturi dryer (1).
- An arrangement for drying particulate material (10) such as hydrocarbonous particulate material, for example oil shale, comprising
a venturi dryer (1) having a venturi throat (2) and a drying section (3) in fluid connection with the venturi throat (2), and wherein the venturi dryer (1) has an inner space that is symmetrical with respect to a central axis (B), and
material feeding means (4) for feeding particulate material (10) from a particulate material source (5) into the drying section (3) of the venturi dryer (1),
wherein the venturi dryer (1) has a gas feeding section (9) for feeding gas (11) through the venturi throat (2) of the venturi dryer (1) into the drying section (3) of the venturi dryer (1),
characterized
by the material feeding means (4) comprising at least two screw feeders (6) comprising a spiral blade (7) rotatable about an rotation axis (C),
by each of said at least two screw feeders (6) opening up into the drying section (3) of the venturi dryer (1) at a feeding opening (8) between the screw feeder (6) and the drying section (3) of the venturi dryer (1),
by each of said at least two screw feeders (6) being connected to the drying section (3) of the venturi dryer (1) so that the central axis (B) of the inner space of the venturi dryer (1) is uncut by an imaginary extension (12) of the rotation axis (C) of each screw feeder (6),
by the feeding openings (8) being provided symmetrically with respect to the central axis (B) of the inner space of the venturi dryer (1), and
by each of said at least two screw feeders (6) being connected to the drying section (3) of the venturi dryer (1) so that each of the feeding openings (8) are positioned substantially at the same position along the central axis (B) of the inner space of the venturi dryer (1). - The arrangement according to claim 9, characterized
by the material feeding means (4) comprising two screw feeders (6) each comprising a spiral blade (7) rotatable about an rotation axis (C), and
by the two screw feeders (6) being connected to the drying section (3) of the venturi dryer (1) so that the feeding openings (8) between each screw feeder (6) and the drying section (3) of the venturi dryer (1) are positioned under 120 degrees, preferably under 90 degrees, with respect to each other about the central axis (B) of the inner space of the venturi dryer (1). - The arrangement according to claim 9, characterized
by the material feeding means (4) comprising two screw feeders (6) each comprising a spiral blade (7) rotatable about an rotation axis (C), and
by the two screw feeders (6) being connected to the drying section (3) of the venturi dryer (1) so that the feeding openings (8) between each screw feeder (6) and the drying section (3) of the venturi dryer (1) are positioned substantially 180 degrees with respect to each other about the central axis (B) of the inner space of the venturi dryer (1). - The arrangement according to claim 9, characterized
by the material feeding means (4) comprising three screw feeders (6) comprising a spiral blade (7) rotatable about an rotation axis (C), and
by the three screw feeders (6) being connected to the drying section (3) of the venturi dryer (1) so that the feeding openings (8) between each screw feeder (6) and the drying section (3) of the venturi dryer (1) are positioned substantially 120 degrees with respect to each other about the central axis (B) of the inner space of the venturi dryer (1). - The arrangement according to claim 9, characterized
by the material feeding means (4) comprising four screw feeders (6) comprising a spiral blade (7) rotatable about an rotation axis (C), and
by the four screw feeders (6) being connected to the drying section (3) of the venturi dryer (1) so that the feeding openings (8) between each screw feeder (6) and the drying section (3) of the venturi dryer (1) are positioned substantially 90 degrees with respect to each other about the central axis (B) of the inner space of the venturi dryer (1). - The arrangement according to any of the claims 9 to 13, characterized
by the material feeding means (4) for feeding particulate material (10) from a particulate material source (5) into the drying section (3) of the venturi dryer (1) comprising at least one screw feeder (6) having a right-handed spiral blade (7), and
by the material feeding means (4) for feeding particulate material (10) from a particulate material source (5) into the drying section (3) of the venturi dryer (1) comprising at least one screw feeder (6) having a left-handed spiral blade (7) . - The arrangement according to claim 14, characterized
by said at least one screw feeder (6) having a right-handed spiral blade (7) being connected to the drying section (3) of the venturi dryer (1) and by said at least one screw feeder (6) having a left-handed spiral blade (7) being connected to the drying section (3) of the venturi dryer (1) so that both said at least one screw feeder (6) having a right-handed spiral blade (7) and said at least one screw feeder (6) having a left-handed spiral blade (7) are configured to feed particulate material (10) into the drying section (3) of the venturi dryer (1) at the side of the feeding opening (8) between respective screw feeder (6) and the drying section (3) of the venturi dryer (1) that is at a greater distance from the central axis (B) of the inner space of the venturi dryer (1) than the other side of the feeding opening (8) between respective screw feeder (6) and the drying section (3) of the venturi dryer (1). - The arrangement according to any of the claims 9 to 15, characterized by the rotation axis of said at least two screw feeders (6) extending in a mirror-like manner in relation to each other with respect to a plane extending in the direction of the central axis (B) of the inner space of the venturi dryer (1).
- Use of the method as defined in any of the claims 1 to 8 or the arrangement as defined in any of the claims 9 to 16 for drying particulate material (10) in the form of oil shale.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PCT/EP2013/076373 WO2015086075A1 (en) | 2013-12-12 | 2013-12-12 | Method and arrangement for drying particulate material and use of the method or of the arrangement |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3080534A1 EP3080534A1 (en) | 2016-10-19 |
EP3080534B1 true EP3080534B1 (en) | 2018-03-14 |
Family
ID=49885218
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP13814485.2A Active EP3080534B1 (en) | 2013-12-12 | 2013-12-12 | Method and arrangement for drying particulate material and use of the method or of the arrangement |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP3080534B1 (en) |
CN (1) | CN105849489B (en) |
AU (1) | AU2013407389B2 (en) |
CA (1) | CA2932975C (en) |
EA (1) | EA031101B1 (en) |
JO (1) | JO3451B1 (en) |
TR (1) | TR201807234T4 (en) |
WO (1) | WO2015086075A1 (en) |
Families Citing this family (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104990390A (en) * | 2015-07-30 | 2015-10-21 | 天能水泥有限责任公司 | Dry discharged carbide slag drying and ferrosilicon collection method and system |
CN106053157B (en) * | 2016-05-18 | 2019-04-05 | 上海化工研究院有限公司 | A kind of generation nitrogen driving portable gas quick sampling device |
CN110500871B (en) * | 2019-10-02 | 2021-02-23 | 宁夏银豐米业有限公司 | Internal circulation cyclone type grain drying method |
CN110542298A (en) * | 2019-10-02 | 2019-12-06 | 祝磊 | Grain drying and baking process |
CN110500872A (en) * | 2019-10-02 | 2019-11-26 | 祝磊 | The hot-flue dryer of grain |
CN110595157B (en) * | 2019-10-02 | 2021-04-13 | 江西省一江秋粮油有限公司 | Grain dryer |
CN110521771A (en) * | 2019-10-02 | 2019-12-03 | 祝磊 | Applied to the grain dryings such as rice, the internal circulating dryer of dehumidifying |
CN110595158A (en) * | 2019-10-02 | 2019-12-20 | 祝磊 | Grain drying machine |
CN111623621A (en) * | 2019-10-02 | 2020-09-04 | 祝磊 | Grain drying process capable of performing multiple drying |
CN110500875B (en) * | 2019-10-02 | 2020-12-08 | 台州智子科技有限公司 | Floating grain drying machine |
CN110542302B (en) * | 2019-10-02 | 2020-12-22 | 安徽欧瑞达电器科技有限公司 | Drying and air-drying integrated drying process for grains |
RU207286U1 (en) * | 2021-07-09 | 2021-10-21 | Общество с ограниченной ответственностью «МИРРИКО» | DRYING MODULE |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2783544A (en) * | 1953-08-22 | 1957-03-05 | Buttner Werke Ag | Process and apparatus for the drying of damp material in current driers |
NL112337C (en) * | 1958-10-01 | |||
DE1266617B (en) * | 1964-01-02 | 1968-04-18 | Fluid Energy Proc And Equipmen | Jet milling process and device for carrying out the process |
AR207472A1 (en) * | 1974-08-16 | 1976-10-08 | Coaltek Ass | AN APPARATUS FOR HEATING GRANULAR MATERIAL TO HIGH TEMPERATURES |
CN2278192Y (en) * | 1996-10-16 | 1998-04-08 | 上海金图高科技公司 | combined Spraying drying tower |
JP4015453B2 (en) * | 2002-03-27 | 2007-11-28 | 三菱レイヨン株式会社 | Process for producing powdered diene-based graft polymer |
CN2615611Y (en) * | 2003-05-10 | 2004-05-12 | 石家庄工大化工设备有限公司 | Venturi dryer |
-
2013
- 2013-12-12 AU AU2013407389A patent/AU2013407389B2/en not_active Ceased
- 2013-12-12 CA CA2932975A patent/CA2932975C/en active Active
- 2013-12-12 EA EA201690953A patent/EA031101B1/en not_active IP Right Cessation
- 2013-12-12 CN CN201380081796.1A patent/CN105849489B/en active Active
- 2013-12-12 TR TR2018/07234T patent/TR201807234T4/en unknown
- 2013-12-12 WO PCT/EP2013/076373 patent/WO2015086075A1/en active Application Filing
- 2013-12-12 EP EP13814485.2A patent/EP3080534B1/en active Active
-
2014
- 2014-12-09 JO JOP/2014/0357A patent/JO3451B1/en active
Also Published As
Publication number | Publication date |
---|---|
AU2013407389A1 (en) | 2016-06-30 |
CA2932975C (en) | 2020-07-21 |
EP3080534A1 (en) | 2016-10-19 |
EA031101B1 (en) | 2018-11-30 |
CA2932975A1 (en) | 2015-06-18 |
WO2015086075A1 (en) | 2015-06-18 |
JO3451B1 (en) | 2020-07-05 |
CN105849489A (en) | 2016-08-10 |
EA201690953A1 (en) | 2016-11-30 |
AU2013407389B2 (en) | 2017-07-20 |
TR201807234T4 (en) | 2018-06-21 |
CN105849489B (en) | 2017-10-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP3080534B1 (en) | Method and arrangement for drying particulate material and use of the method or of the arrangement | |
US9897376B2 (en) | Drying method for processing material and horizontal rotary dryer | |
KR20180020271A (en) | Classifier, crushing classifier and pulverized coal combustion boiler | |
US10605531B2 (en) | Method and arrangement for feeding feed material from a bin for feed material into a furnace space of a smelting furnace | |
US9709330B2 (en) | Desolventizer toaster | |
KR20160129845A (en) | Flux calciner | |
CN106163650A (en) | Particle dispersion device | |
CN108698088A (en) | System, method and the equipment of flow distribution for controlling solid particle | |
ATE492779T1 (en) | DEVICE FOR CARRYING OUT CHEMICAL AND/OR PHYSICAL REACTIONS BETWEEN A SOLID AND A GAS | |
EP3280966B1 (en) | Burner and spreading arrangement for a burner | |
EP3137219B1 (en) | Multistage separator assembly | |
CN106382635B (en) | A kind of refuse burner charging drying crushing apparatus | |
US10151535B2 (en) | Arrangement for feeding fine-grained matter to a concentrate or matte burner of a suspension smelting furnace | |
CN210088843U (en) | Coal feeding device for boiler and gas wall assembly thereof | |
EP3031506A1 (en) | Cyclofilter with a battery of cyclones with lateral dust distribution | |
SE449852B (en) | SKRUVTRANSPORTOR | |
US20110097679A1 (en) | Device for performing chemical and/or physical reactions between a solid material and a gas | |
CN106871446A (en) | Coal-burning gasifying energy-saving boiler | |
RU2220010C1 (en) | Air-passage separator for explosive media | |
RU2021108037A (en) | MULTIPLE FURNACE CONTAINING LEVERS CARRYING MIXING TEETH OPTIMIZED PROFILE, BIOMASS APPLICATION | |
CN109663673A (en) | A kind of wind send material dust removal system | |
CN104389692A (en) | Gasoline engine tank and gasoline engine | |
SE519899C2 (en) | Combustion device with rotary combustion chamber | |
PL123723U1 (en) | Deflector for solid fuel fired boiler | |
PL63502B1 (en) |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20160621 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAX | Request for extension of the european patent (deleted) | ||
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: GRANT OF PATENT IS INTENDED |
|
INTG | Intention to grant announced |
Effective date: 20171010 |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE PATENT HAS BEEN GRANTED |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP Ref country code: AT Ref legal event code: REF Ref document number: 979303 Country of ref document: AT Kind code of ref document: T Effective date: 20180315 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: FG4D |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R096 Ref document number: 602013034481 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: EE Ref legal event code: FG4A Ref document number: E015519 Country of ref document: EE Effective date: 20180529 |
|
REG | Reference to a national code |
Ref country code: NL Ref legal event code: MP Effective date: 20180314 |
|
REG | Reference to a national code |
Ref country code: LT Ref legal event code: MG4D |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: NO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180614 Ref country code: LT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180314 Ref country code: FI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180314 Ref country code: HR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180314 Ref country code: CY Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180314 |
|
REG | Reference to a national code |
Ref country code: AT Ref legal event code: MK05 Ref document number: 979303 Country of ref document: AT Kind code of ref document: T Effective date: 20180314 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: RS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180314 Ref country code: LV Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180314 Ref country code: SE Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180314 Ref country code: GR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180615 Ref country code: BG Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180614 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180314 Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180314 Ref country code: RO Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180314 Ref country code: PL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180314 Ref country code: NL Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180314 Ref country code: ES Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180314 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: CZ Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180314 Ref country code: SK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180314 Ref country code: AT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180314 Ref country code: SM Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180314 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R097 Ref document number: 602013034481 Country of ref document: DE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: PT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180716 |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180314 |
|
26N | No opposition filed |
Effective date: 20181217 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SI Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180314 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 602013034481 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20181212 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20181212 Ref country code: MC Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180314 |
|
REG | Reference to a national code |
Ref country code: IE Ref legal event code: MM4A |
|
REG | Reference to a national code |
Ref country code: BE Ref legal event code: MM Effective date: 20181231 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20181212 Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20181231 Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190702 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: BE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20181231 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20181231 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20181231 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20181212 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: MT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20181212 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: HU Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT; INVALID AB INITIO Effective date: 20131212 Ref country code: MK Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20180314 |
|
REG | Reference to a national code |
Ref country code: EE Ref legal event code: GB1A Ref document number: E015519 Country of ref document: EE |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IS Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 20180714 |
|
REG | Reference to a national code |
Ref country code: EE Ref legal event code: HC1A Ref document number: E015519 Country of ref document: EE |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: TR Payment date: 20231211 Year of fee payment: 11 Ref country code: EE Payment date: 20231218 Year of fee payment: 11 |