EP3535203A1 - Silo and method for gassing bulk material - Google Patents
Silo and method for gassing bulk materialInfo
- Publication number
- EP3535203A1 EP3535203A1 EP17818028.7A EP17818028A EP3535203A1 EP 3535203 A1 EP3535203 A1 EP 3535203A1 EP 17818028 A EP17818028 A EP 17818028A EP 3535203 A1 EP3535203 A1 EP 3535203A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- bulk material
- container
- silo
- outlet
- valve spool
- 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.)
- Granted
Links
- 239000013590 bulk material Substances 0.000 title claims abstract description 89
- 238000000034 method Methods 0.000 title claims description 24
- 239000007789 gas Substances 0.000 description 30
- 239000002023 wood Substances 0.000 description 12
- 239000003570 air Substances 0.000 description 9
- 238000001035 drying Methods 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000010355 oscillation Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 241000878007 Miscanthus Species 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000003534 oscillatory effect Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 239000002028 Biomass Substances 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241000218657 Picea Species 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
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000009264 composting Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- -1 ferrous metals Chemical class 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000003864 humus Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/74—Large containers having means for heating, cooling, aerating or other conditioning of contents
- B65D88/741—Large containers having means for heating, cooling, aerating or other conditioning of contents aerating by ambient air through openings in the wall
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/26—Hoppers, i.e. containers having funnel-shaped discharge sections
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/54—Large containers characterised by means facilitating filling or emptying
- B65D88/64—Large containers characterised by means facilitating filling or emptying preventing bridge formation
- B65D88/68—Large containers characterised by means facilitating filling or emptying preventing bridge formation using rotating devices
Definitions
- the description relates to a silo and a method for carrying out processes with gases in bulk.
- a treatment of the bulk material in the silo can be advantageous.
- moist bulk material can be dried directly in the silo, eliminating the need for an external device to dry the bulk material.
- the silo can not be used for (intermediate) treatment of the bulk material. Storage to be used.
- the object underlying the present invention is therefore to provide a silo and a method that allow treatment of the bulk material inside the silo.
- it may also be important to allow treatment of the bulk material during filling and / or the simultaneous removal of bulk material from the silo.
- the object is achieved by a silo according to claim 1 and a method according to claim 7.
- the silo comprises a container for receiving bulk material having an inlet and an outlet and a valve spool disposed in the container between the inlet and the outlet and configured to flow a predefined amount of bulk material per unit time in the flow direction from the inlet to the outlet to let.
- the silo further includes a gas inlet opening disposed on the container between the valve spool and the outlet, and gas flows substantially against the flow direction of the bulk material through the container.
- a method for gassing of bulk material comprises the steps of providing a silo according to claims 1 to 6, filling the container with bulk material via the inlet, actuating the valve spool so that a predefined amount of bulk material per unit time can flow to the outlet and gassing the bulk material, with gas passing through the gas inlet flows into the container against the flow direction of the bulk material through the container and the bulk material and removing the bulk material from the container.
- Figure 1 shows an exemplary silo in a sectional view with two valve spools.
- FIG. 2 shows two exemplary valve spool in a perspective view.
- FIG. 3 shows a sectional view of the silo according to FIG. 1 with four valve slides.
- a silo in particular a high silo or a silo tower, and an associated method are described with reference to the figures, in which bulk material can be subjected to a gas counterflow.
- the silo and the associated method can be used, for example, for gas purification of activated carbon filters, for drying wood chips, for cooling bulk material in the course of heat recovery and for composting in connection with humus production.
- the silo for storage and implementation of various bulk materials, such as coal can be used.
- various industrial processes can take place in the silo.
- bulk goods can be cooled, heated, dried, composted and torrefied. It is also possible that several processes run parallel to each other.
- any type of bulk material can be processed in the silo with the method described here.
- a continuous removal of bulk material from the silo is not necessary for the intended function of the silo and the associated method.
- FIG. 1 shows a sectional view of an exemplary silo.
- the silo comprises a container 10, which may have any geometry.
- the container 10 may be, for example, round, rectangular, polygonal or oval.
- the container 10 may be made of any material, such as metal, plastic, ceramic or a composite material.
- the container 10 serves to receive bulk material 20, to store and finally deliver again.
- the container 10 comprises at least one inlet 11, which in this example is arranged on an upper side of the container 10 and at least one outlet 12, which is arranged on an underside of the container 10, wherein the underside at the inlet 11 opposite Side of the container 10 is located.
- gravity acts on the bulk material 20 approximately in the direction of the outlet 12.
- the bulk material 20 flows along a direction of flow v from the inlet 11 to the outlet 12 under the action of gravity.
- the direction of flow v is approximately vertical, that is to say equal to the effective direction of gravity.
- the bulk material 20 can be continuously and evenly removed from the container 10 and transported from there for further processing.
- the bulk material 20 may also flow in a direction other than the vertical.
- the bulk material 20 is conveyed via a fan, a pump or with a mechanical conveyor, such as a screw conveyor in the silo.
- At least one valve spool 15 may be located, which is arranged between the inlet 11 and the outlet 12 and is adapted to let flow a predefined amount of bulk material 20 per unit time in the flow direction v to the outlet 12.
- the container 10 has two valve slides 15. If bulk material 20 is to be removed during operation via the outlet 12, then the valve slides 15 can serve to remove the bulk material 20 continuously and uniformly from the container 10.
- the valve spool 15 may, for example, at least partially made of metal, plastic, ceramic or a composite material. The use of non-ferrous metals is possible. Due to the increased wear on the valve slides 15, the valve spool 15 can be additionally provided with order welds. To the left and right of the valve slides 15 may be mechanical barriers 17, which prevent flow of the bulk material away from the valve slide 15.
- the container 10 also has at least one gas inlet opening 13 which can be arranged in the vertical direction between the valve spools 15 and the outlet 12 and allow a (theoretically arbitrary) gas 30 to flow into the container 10 should.
- the gas 30 flows between the mechanical barriers 17 and the valve slides 15.
- the bulk material 20 is loosened and dosed locally and flows opposite to the direction of gas flow between the mechanical barriers 17 and the valve spool 15 through (counterflow).
- the gas 30 serves to extract moisture from the still moist chips.
- warm, dry air can be conducted via the gas inlet opening 13 into the container 10.
- the gas 30 flowing through the bulk material 20 receives moisture from the bulk material 20.
- the moisture absorbed by the gas 30 is carried with the gas 30 through and then out of the container 10. This process can also be carried out several times in succession. This allows a higher degree of drying can be achieved.
- FIG. 2 shows two different examples of valve sliders 15 in a perspective view.
- the valve spool 15 may be in the examples described Rohroder solid sections, each having a longitudinal axis 16.
- the valve spool 15 may for example have a rectangular or an oval cross section, but no circular cross section.
- the valve spool 15 are arranged in the container 10 such that the longitudinal axes 16 is approximately orthogonal to the flow direction v of the bulk material 20.
- the valve slide 15 can therefore oscillate in operation about their longitudinal axes 16.
- the oscillation movement can be controlled by a suitable controller.
- the valve spool 15 can also perform non-oscillatory motion using the controller.
- the oscillatory movement ensures a uniform and continuous removal possibility via the outlet 12 on the container 10 and can for example be designed such that is enclosed around the longitudinal axis 16, a total angle of 120 °. This would correspond to a rotation from a rest position of +/- 60 °. Alternatively, larger and smaller total angles can be used.
- valve spool 15 are rotated and held each other such that forms a small gap between the valve spools 15 each. This gap can be adjusted continuously and be so small that no bulk 20 can flow past the valve spool 15. The valve spool 15 can consequently also block the flow of bulk material 20 to the outlet 12.
- valve spool 15 has four valve spools 15.
- the number of valve spool 15 may vary.
- the valve spool 15 are arranged such that the longitudinal axes 16 of the valve spool 15 are adjacent to each other and parallel to each other in an approximately horizontal plane.
- An arrangement of a plurality of valve spools 15 can reduce necessary drive forces for the individual valve spool 15.
- it is also possible that the longitudinal axes 16 of the valve spool 15 are not exclusively in a plane.
- the container 10 may have a capacity of 1- 2000 m 3 in the examples mentioned.
- the silo may receive bulk 20 of a volume between 1 and 1000 m 3 per hour and / or through the container 10.
- a method used with the silo described comprises providing a silo described above, and then filling the container 10 with bulk material 20 via the inlet 11 and the actuation of the at least one valve spool 15, so that a predefined amount of bulk material 20 per unit time Outlet 12 can flow. Meanwhile, the gasification of the bulk material 20 takes place, wherein gas 30 flows via the gas inlet opening 13 into the container 10, against the flow direction v of the bulk material 20 and towards the inlet 11 through the container 10 and consequently also through the bulk material 20.
- the method comprises the removal of the bulk material 20 from the container 10.
- the removal of the bulk material 20 from the container 10 can be uniform and continuous.
- the valve spool 15 may perform an oscillating motion about the longitudinal axis 16. For the supply of the gas 30 to the container 10, this can be conveyed through the container 10, for example under pressure or under vacuum with the aid of a blower or a pump.
- the gas 30 described in the examples may be any gas 30 and gas mixture.
- the gas 30 may be ambient air, oxygen, an inert gas or water vapor.
- a drying of bulk material 20 can be carried out.
- the bulk material 20 may in this case be wood chips, in particular wood chips.
- the wood chips can be wood chips from freshly harvested spruces including green needles and bark and have a moisture content of about 65%.
- the wood chips can be passed using the silo in a biomass heating plant.
- the silo may be a concrete silo, wherein the container 10 may have a diameter of about 6.5 m and a content volume of about 650 m 3 .
- the discharge of the wood chips from the container 10 by a hydraulically driven oscillator.
- dry cold air can be sucked through the container 10 by means of a centrifugal fan.
- the container 10 of the silo is filled with miscanthus, for example, to a height of about 12 m.
- 90 m 3 of forest hack with a moisture content of 65% water can be filled.
- one or more times air can be sucked through the container 10 using the radial fan.
- the air can be dry and cold air with low humidity.
- the dry air removes moisture from the miscanthus and the wood chips.
- the operating time of the centrifugal fan is about 70 hours and it is an air quantity of about 5000 m 3 / h sucked through the container 10.
- the centrifugal fan can be operated continuously or in predetermined time windows. After processing the wood chips, the moisture content may have fallen to about 30%.
- bulk material 20 in particular mineral bulk material 20 can be cooled.
- minerals can be cooled at a temperature of about 800 ° C in the container 10 to about 200 ° C.
- a container 10 with a volume of about 100 m 3 can be used.
- air at a temperature of approximately 100 ° C. is forced through the container 10.
- the cooler air flows past the minerals and removes this heat.
- bulk material 20, in particular in the form of briquettes can be cooled. The silo described and the associated method ensure material-friendly processing of the bulk material 20.
- the brittle fracture-sensitive briquettes are treated with a grain size of about 20 mm gently and their original grain size can also be obtained during processing.
- the briquettes are cooled in the container 10 from 80 ° C to about 30 ° C down.
- a container with a volume of about 50 m 3 is used and about 10 m 3 / h briquettes are passed through the container 10.
- the container 10 is continuously emptied and simultaneously filled continuously. As a result, the level can be kept constant by the briquettes in the container 10.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL17818028T PL3535203T3 (en) | 2016-11-07 | 2017-11-07 | Silo and method for gassing bulk material |
SI201730528T SI3535203T1 (en) | 2016-11-07 | 2017-11-07 | Silo and method for gassing bulk material |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102016121232.6A DE102016121232A1 (en) | 2016-11-07 | 2016-11-07 | PROCESS FOR PROCESSES IN THE BULK BY MEASURING GASES |
PCT/AT2017/060297 WO2018081844A1 (en) | 2016-11-07 | 2017-11-07 | Silo and method for gassing bulk material |
Publications (3)
Publication Number | Publication Date |
---|---|
EP3535203A1 true EP3535203A1 (en) | 2019-09-11 |
EP3535203B1 EP3535203B1 (en) | 2020-10-07 |
EP3535203B8 EP3535203B8 (en) | 2020-11-18 |
Family
ID=60293772
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP17818028.7A Active EP3535203B8 (en) | 2016-11-07 | 2017-11-07 | Silo and method for gassing bulk material |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP3535203B8 (en) |
DE (1) | DE102016121232A1 (en) |
DK (1) | DK3535203T3 (en) |
ES (1) | ES2841314T3 (en) |
HU (1) | HUE052161T2 (en) |
PL (1) | PL3535203T3 (en) |
SI (1) | SI3535203T1 (en) |
WO (1) | WO2018081844A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN109733756A (en) * | 2019-01-03 | 2019-05-10 | 国家能源投资集团有限责任公司 | Coal bunker |
DE202023102387U1 (en) | 2023-05-03 | 2023-05-23 | Loibl Förderanlagen GmbH | Discharge system for discharging conveyed goods |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5176295A (en) * | 1990-03-13 | 1993-01-05 | Beloit Technologies, Inc. | Discharge apparatus for bins |
US5433018A (en) * | 1993-10-28 | 1995-07-18 | Texaco Inc. | Purge feeding means and method |
DE10251634B4 (en) * | 2002-11-06 | 2006-05-18 | Coperion Waeschle Gmbh & Co. Kg | Method for gassing bulk material in a bulk material silo and installation for carrying out the method |
AU2008203480A1 (en) * | 2007-08-02 | 2009-02-19 | Anthony Balding | A device, storage facility and method for aerating or fumigating |
DE102009059971B4 (en) * | 2009-12-22 | 2017-11-02 | Karl Erwin Brand | Device for storing, processing and discharging heavy-flowing bulk materials |
-
2016
- 2016-11-07 DE DE102016121232.6A patent/DE102016121232A1/en not_active Withdrawn
-
2017
- 2017-11-07 SI SI201730528T patent/SI3535203T1/en unknown
- 2017-11-07 PL PL17818028T patent/PL3535203T3/en unknown
- 2017-11-07 WO PCT/AT2017/060297 patent/WO2018081844A1/en unknown
- 2017-11-07 ES ES17818028T patent/ES2841314T3/en active Active
- 2017-11-07 DK DK17818028.7T patent/DK3535203T3/en active
- 2017-11-07 EP EP17818028.7A patent/EP3535203B8/en active Active
- 2017-11-07 HU HUE17818028A patent/HUE052161T2/en unknown
Also Published As
Publication number | Publication date |
---|---|
PL3535203T3 (en) | 2021-03-08 |
DE102016121232A1 (en) | 2018-05-09 |
ES2841314T3 (en) | 2021-07-08 |
HUE052161T2 (en) | 2021-04-28 |
WO2018081844A1 (en) | 2018-05-11 |
EP3535203B1 (en) | 2020-10-07 |
DK3535203T3 (en) | 2021-01-04 |
EP3535203B8 (en) | 2020-11-18 |
SI3535203T1 (en) | 2021-01-29 |
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