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WO1993000282A1 - Device for feeding bulk material into a pressurized space - Google Patents

Device for feeding bulk material into a pressurized space Download PDF

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Publication number
WO1993000282A1
WO1993000282A1 PCT/SE1992/000444 SE9200444W WO9300282A1 WO 1993000282 A1 WO1993000282 A1 WO 1993000282A1 SE 9200444 W SE9200444 W SE 9200444W WO 9300282 A1 WO9300282 A1 WO 9300282A1
Authority
WO
WIPO (PCT)
Prior art keywords
chamber
pressurized
piston
slide
bulk material
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/SE1992/000444
Other languages
French (fr)
Inventor
Lars Chambert
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EOn Sverige AB
Original Assignee
Sydkraft AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Sydkraft AB filed Critical Sydkraft AB
Publication of WO1993000282A1 publication Critical patent/WO1993000282A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34—Details
    • B65G53/40—Feeding or discharging devices
    • B65G53/46—Gates or sluices, e.g. rotary wheels
    • B65G53/4683—Gates or sluices, e.g. rotary wheels with a reciprocating mover acting directly on material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
    • B65G53/34—Details
    • B65G53/40—Feeding or discharging devices
    • B65G53/46—Gates or sluices, e.g. rotary wheels
    • B65G53/4691—Gates or sluices, e.g. rotary wheels of air-lock type, i.e. at least two valves opening asynchronously

Definitions

  • the invention relates to feeding of bulk material into a pressurized space, the bulk material being fed into a chamber which is pressurized to a higher pressure, and the material being fed from the pressurized chamber into said space.
  • SE 9003172-5 describes several embodiments of a method for such feeding, particularly for feeding fluffy bulk material such as biomass, turf, saw dust, coal dust or energy forrest into a gasification vessel or another processing vessel.
  • the material is fed from the pressurized chamber into the space by means of a piston which is pushed through the chamber.
  • the object of the invention is to provide an apparatus for working said embodiment of the method according to SE 9003172-5, wherein abrasive particles from the bulk material are prevented from entering the gap between the piston and the surrounding wall of the chamber where such particles could cause unnecessary wear on the elements moving in relation to each other, and cost increasing finishing of these elements are avoided as far as possible.
  • the invention provides an apparatus according to claim 1.
  • FIG 1 is a longitudinal cross sectional view of an embodiment of the apparatus according to the invention in the functional position for feeding bulk material into the chamber
  • FIG 2 is a corresponding longitudinal cross sectional view in the functional position for pressurising the chamber
  • FIG 3 is a corresponding longitudinal cross sectional view in the functional position for transferring the bulk material from the pressurized chamber to the space in a gasification vessel or another processing vessel.
  • FIG. 1 there is shown a lock-gate which comprises a vertically disposed cylindrical chamber 10 having an inlet socket 11 at the side thereof spaced below the upper end of the chamber.
  • the lower end of the chamber forms an outlet 12 to be connected to a pressurized space (not shown), e.g. a processing vessel, and having a valve 13.
  • An inlet 14 for pressurized gas, having a shut-off valve 15 is connected to the chamber.
  • a tubular slide 16 which can be displaced axially into the chamber is provided for shutting off the connection beween the inlet socket 11 and the chamber 10 said slide being guided for rectilinear axial movement by means of a guide 17 and being displaceable between the withdrawn position shown in FIG. 1 and the advanced position in FIGS.
  • the chamber 10 has a larger diameter in the upper part thereof and changes to a smaller diameter at the shoulder 19.
  • the slide can be moved into the upper wider part of the chamber only, and it is not necessary that it has sealing fit against the inside surface of the chamber wall. It has an inner diameter which is in agreement with or may be slightly smaller than the inner diameter of the narrower lower part of the chamber so that the inside surface of the slide is substantially flush with the inside surface of the narrower, lower part when the slide is moved into the wider upper part of the chamber.
  • Expandable sealing means 20 is provided in the wall of the chamber 10, said means preferably comprises one or more sealing rings that can be engaged hydraulically against the outside surface of the slide to seal effectively the narrower lower part of the chamber 10 against the upper part and against the inlet socket.
  • the number of sealing rings determines the efficiency of the sealing means and should be chosen with consideration of the desired safety level. It is an advantage that the sealing rings are not sensitive to minor grains of material which may possibly be clamped against the slide when the sealing rings are engaged therewith.
  • a tubular piston 21 is displaceably guided in the slide 16 and can be displaced between the position shown in FIG. 1 and the position shown in FIG. 3 by means of an hydraulic ram 22 fixedly anchored at 23. When the slide is in the closing position in accordance with FIG.
  • the piston can be displaced continuously through the slide and into the narrower lower part of the chamber 10 by means of the hydraulic ram 22, because the slide and said part of the chamber form a continuous cylinder bore.
  • the inner diameter of the slide may be slightly smaller than the inner diameter of the narrower part of the chamber, which means that the piston does not seal against the inside surface of the chamber wall or does not even move in contact therewith.
  • a sliding seal 24 for sealing between the slide and the piston. This sealing eliminates the risk of material, dust or the like penetrating between the slide and the piston, causing unnecessary wear. Sealing liquid or sealing gas may be introduced into the seal 24.
  • the slide 16 is withdrawn so that the inlet socket 11 is connected with the chamber 10.
  • the valve 13 is closed so that the processing vessel is separated from the chamber 10, and the valve 15 for pressurizing the chamber is also closed. It is assumed tht the inlet socket 11 is connected to means for supplying bulk material and that such material is now fed into the chamber 10 over the inlet socket to fill the narrower lower part of the chamber, said part being located below the shoulder 19.
  • the slide 16 is displaced to the advanced position according to FIG. 2 by means of the hydraulic ram 18.
  • the piston 21 is brought to follow the movement of the slide 16 by means of the hydraulic ram 22.
  • the sealing means 20 is engaged with the outside surface of the slide.
  • the material in the chamber 10 which is sealed against the atmosphere as well as the processing vessel may now in some cases be slightly compressed depending on the art of the material, by the piston 21 being displaced further downwards to press against the material. Biomass can be compressed without further to 2/3 of the original volume while grain material such as coal should not be com ⁇ pressed.
  • the piston can be displaced by means of a relatively low pressure which means that the power consumption can be kept low.
  • the volume defined between the piston 21 and the valve 13 in the chamber 10 will be pressurized to substantially the same pressure as that prevailing in the processing vessel by the valve 15 being opened, the valve 13 then being opened and the piston 21 being displaced to the lower position thereof, FIG. 3, the bulk material being supplied to the processing vessel from the pressurized chamber 10.
  • the valves 13 and 15 being closed the starting position according to FIG. 1 then will be resumed.
  • the only element which needs finishing is the outside surface of the piston 21 which should have such surface finish that the sliding seal 24 will not be worn.
  • the piston need not, however, be in sealing engagement with the inside surface of the slide.
  • the controlled movements required in the apparatus can be effected and co-ordinated by simple hydraulic systems.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filling Or Emptying Of Bunkers, Hoppers, And Tanks (AREA)
  • Auxiliary Methods And Devices For Loading And Unloading (AREA)

Abstract

Apparatus for feeding bulk material into a pressurized space comprising a chamber for receiving the material, which has a side inlet (11) and can be pressurized. An axially displaceable lining (16) is provided in the chamber as shut-off means for the side inlet (11). A piston (21) can be displaced through the lining and the chamber for transferring the material to the space from the pressurized chamber.

Description

DEVICE FOR FEEDING BULK MATERIAL INTO A PRESSURIZED SPACE
The invention relates to feeding of bulk material into a pressurized space, the bulk material being fed into a chamber which is pressurized to a higher pressure, and the material being fed from the pressurized chamber into said space. SE 9003172-5 describes several embodiments of a method for such feeding, particularly for feeding fluffy bulk material such as biomass, turf, saw dust, coal dust or energy forrest into a gasification vessel or another processing vessel. In one embodiment the material is fed from the pressurized chamber into the space by means of a piston which is pushed through the chamber. The object of the invention is to provide an apparatus for working said embodiment of the method according to SE 9003172-5, wherein abrasive particles from the bulk material are prevented from entering the gap between the piston and the surrounding wall of the chamber where such particles could cause unnecessary wear on the elements moving in relation to each other, and cost increasing finishing of these elements are avoided as far as possible. For said object the invention provides an apparatus according to claim 1.
In order to explain the invention in more detail reference is made to the accompanying drawings in which FIG 1 is a longitudinal cross sectional view of an embodiment of the apparatus according to the invention in the functional position for feeding bulk material into the chamber,
FIG 2 is a corresponding longitudinal cross sectional view in the functional position for pressurising the chamber, and FIG 3 is a corresponding longitudinal cross sectional view in the functional position for transferring the bulk material from the pressurized chamber to the space in a gasification vessel or another processing vessel.
In FIG. 1 there is shown a lock-gate which comprises a vertically disposed cylindrical chamber 10 having an inlet socket 11 at the side thereof spaced below the upper end of the chamber. The lower end of the chamber forms an outlet 12 to be connected to a pressurized space (not shown), e.g. a processing vessel, and having a valve 13. An inlet 14 for pressurized gas, having a shut-off valve 15 is connected to the chamber. A tubular slide 16 which can be displaced axially into the chamber is provided for shutting off the connection beween the inlet socket 11 and the chamber 10 said slide being guided for rectilinear axial movement by means of a guide 17 and being displaceable between the withdrawn position shown in FIG. 1 and the advanced position in FIGS. 2 and 3 by means of an hydraulic ram 18. The chamber 10 has a larger diameter in the upper part thereof and changes to a smaller diameter at the shoulder 19. The slide can be moved into the upper wider part of the chamber only, and it is not necessary that it has sealing fit against the inside surface of the chamber wall. It has an inner diameter which is in agreement with or may be slightly smaller than the inner diameter of the narrower lower part of the chamber so that the inside surface of the slide is substantially flush with the inside surface of the narrower, lower part when the slide is moved into the wider upper part of the chamber. Expandable sealing means 20 is provided in the wall of the chamber 10, said means preferably comprises one or more sealing rings that can be engaged hydraulically against the outside surface of the slide to seal effectively the narrower lower part of the chamber 10 against the upper part and against the inlet socket. The number of sealing rings determines the efficiency of the sealing means and should be chosen with consideration of the desired safety level. It is an advantage that the sealing rings are not sensitive to minor grains of material which may possibly be clamped against the slide when the sealing rings are engaged therewith. A tubular piston 21 is displaceably guided in the slide 16 and can be displaced between the position shown in FIG. 1 and the position shown in FIG. 3 by means of an hydraulic ram 22 fixedly anchored at 23. When the slide is in the closing position in accordance with FIG. 2 the piston can be displaced continuously through the slide and into the narrower lower part of the chamber 10 by means of the hydraulic ram 22, because the slide and said part of the chamber form a continuous cylinder bore. As mentioned above the inner diameter of the slide may be slightly smaller than the inner diameter of the narrower part of the chamber, which means that the piston does not seal against the inside surface of the chamber wall or does not even move in contact therewith. At the upper end of the slide there is provided a sliding seal 24 for sealing between the slide and the piston. This sealing eliminates the risk of material, dust or the like penetrating between the slide and the piston, causing unnecessary wear. Sealing liquid or sealing gas may be introduced into the seal 24. When the method according to SE 9003172-5 is worked by using the apparatus described herein the following procedure is applied:
In the starting position shown in FIG. 1 the slide 16 is withdrawn so that the inlet socket 11 is connected with the chamber 10. The valve 13 is closed so that the processing vessel is separated from the chamber 10, and the valve 15 for pressurizing the chamber is also closed. It is assumed tht the inlet socket 11 is connected to means for supplying bulk material and that such material is now fed into the chamber 10 over the inlet socket to fill the narrower lower part of the chamber, said part being located below the shoulder 19.
In the next step the slide 16 is displaced to the advanced position according to FIG. 2 by means of the hydraulic ram 18. During this movement of the slide the piston 21 is brought to follow the movement of the slide 16 by means of the hydraulic ram 22. The sealing means 20 is engaged with the outside surface of the slide. The material in the chamber 10 which is sealed against the atmosphere as well as the processing vessel may now in some cases be slightly compressed depending on the art of the material, by the piston 21 being displaced further downwards to press against the material. Biomass can be compressed without further to 2/3 of the original volume while grain material such as coal should not be com¬ pressed. During the major part of the movement the piston can be displaced by means of a relatively low pressure which means that the power consumption can be kept low. The volume defined between the piston 21 and the valve 13 in the chamber 10 will be pressurized to substantially the same pressure as that prevailing in the processing vessel by the valve 15 being opened, the valve 13 then being opened and the piston 21 being displaced to the lower position thereof, FIG. 3, the bulk material being supplied to the processing vessel from the pressurized chamber 10. The valves 13 and 15 being closed the starting position according to FIG. 1 then will be resumed. The only element which needs finishing is the outside surface of the piston 21 which should have such surface finish that the sliding seal 24 will not be worn. The piston need not, however, be in sealing engagement with the inside surface of the slide.
The controlled movements required in the apparatus can be effected and co-ordinated by simple hydraulic systems.

Claims

1. Apparatus for feeding bulk material into a pressurized space, comprising a chamber (10) for receiving the material, which has a side inlet (11) and can be pressurized, and a piston (21) which can be displaced through the chamber to transfer the material to the space from the pressurized chamber, c h a r a c t e r i z e d in that in the chamber there is provided an axially displaceable lining (16) as a shut-off element for the side inlet (11), and that the piston (21) is displaceable into the chamber (10) through the lining.
2. Apparatus according to claim 1, c h a r a c¬ t e r i z e d in that expandable sealing means (20) is provided between the wall of the chamber (10) and the lining (16) .
3. Apparatus according to claim 1 or 2, c h a r a c t e r i z e d in that a sliding seal (24) is provided in the lining (16) for sealing against the outside surface of the piston (21) .
PCT/SE1992/000444 1991-06-20 1992-06-18 Device for feeding bulk material into a pressurized space Ceased WO1993000282A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9101908-3 1991-06-20
SE9101908A SE469070B (en) 1991-06-20 1991-06-20 DEVICE FOR INPUT OF BULK MATERIAL IN A SPACE UNDER PRESSURE

Publications (1)

Publication Number Publication Date
WO1993000282A1 true WO1993000282A1 (en) 1993-01-07

Family

ID=20383107

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1992/000444 Ceased WO1993000282A1 (en) 1991-06-20 1992-06-18 Device for feeding bulk material into a pressurized space

Country Status (2)

Country Link
SE (1) SE469070B (en)
WO (1) WO1993000282A1 (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996009113A1 (en) * 1994-09-22 1996-03-28 Imatran Voima Oy Method and apparatus for feeding solid material into a pressurized space
WO2003013714A1 (en) * 2001-08-11 2003-02-20 Sicco K/S Method for transfer of particulate solid products between zones of different pressure.
DE10323056A1 (en) * 2003-05-20 2004-12-30 Klumpp Apparate- Und Metallbau Gmbh Conveying system, in particular, for sensitive bulk products comprises a vertical pipe section accommodating a movable piston-like conveying head
WO2009103697A3 (en) * 2008-02-18 2009-11-26 Siemens Aktiengesellschaft Dust intake system
EP2564920A1 (en) 2009-08-27 2013-03-06 Inbicon A/S Particle pump methods and devices.
EP2738239A1 (en) * 2012-11-29 2014-06-04 Care Beteiligungsverwaltung GmbH Apparatus for transporting fuels in a gasification reactor
CN104210854A (en) * 2013-05-31 2014-12-17 袁东日 Suction device
CN105084008A (en) * 2015-09-18 2015-11-25 江苏海狮机械集团有限公司 Linen air conveying system for laundry room
CN105129432A (en) * 2015-09-18 2015-12-09 江苏海狮机械集团有限公司 Washing room cloth grass air feeding system
CN106185278A (en) * 2016-08-30 2016-12-07 山东华唐环保科技有限公司 A kind of coal dust metering device
CN109178940A (en) * 2018-10-29 2019-01-11 北京拓威能效技术有限公司 pipeline switching device
CN114671252A (en) * 2022-03-17 2022-06-28 常州大学 Gas explosion type micro powder feeding device and powder feeding method thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3406824A1 (en) * 1984-02-24 1985-08-29 Kraftwerk Union AG, 4330 Mülheim Bell valve for the pressure-resistant shutting off of highly abrasive media
AU4930285A (en) * 1984-04-13 1987-05-07 Texaco Development Corporation High pressure feeder

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3406824A1 (en) * 1984-02-24 1985-08-29 Kraftwerk Union AG, 4330 Mülheim Bell valve for the pressure-resistant shutting off of highly abrasive media
AU4930285A (en) * 1984-04-13 1987-05-07 Texaco Development Corporation High pressure feeder

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996009113A1 (en) * 1994-09-22 1996-03-28 Imatran Voima Oy Method and apparatus for feeding solid material into a pressurized space
WO2003013714A1 (en) * 2001-08-11 2003-02-20 Sicco K/S Method for transfer of particulate solid products between zones of different pressure.
RU2291742C2 (en) * 2001-08-11 2007-01-20 Сикко К/С Method and the device for transportation of the solid products in the form of particles between the areas with the different pressure
US7600960B2 (en) 2001-08-11 2009-10-13 Christensen Lena H Method for transfer of particulate solid products between zones of different pressure
DE10323056A1 (en) * 2003-05-20 2004-12-30 Klumpp Apparate- Und Metallbau Gmbh Conveying system, in particular, for sensitive bulk products comprises a vertical pipe section accommodating a movable piston-like conveying head
DE10323056B4 (en) * 2003-05-20 2006-07-06 Rainer Klumpp conveyor system
WO2009103697A3 (en) * 2008-02-18 2009-11-26 Siemens Aktiengesellschaft Dust intake system
US9211515B2 (en) 2009-08-27 2015-12-15 Inbicon A/S Particle pump methods and devices
EP2564920A1 (en) 2009-08-27 2013-03-06 Inbicon A/S Particle pump methods and devices.
US9056294B2 (en) 2009-08-27 2015-06-16 Inbicon A/S Particle pump methods and devices
WO2014083417A1 (en) * 2012-11-29 2014-06-05 Care Beteiligungsverwaltung Gmbh Device for conveying fuels into a gasification reactor
US10696912B2 (en) 2012-11-29 2020-06-30 Care Beteiligungsverwaltung Gmbh Device for conveying fuels into a gasification reactor
KR20150088885A (en) * 2012-11-29 2015-08-03 케어 베타일리궁스페어발퉁 게엠베하 Device for conveying fuels into a gasification reactor
KR101989002B1 (en) * 2012-11-29 2019-06-13 케어 베타일리궁스페어발퉁 게엠베하 Device for conveying fuels into a gasification reactor
EP2738239A1 (en) * 2012-11-29 2014-06-04 Care Beteiligungsverwaltung GmbH Apparatus for transporting fuels in a gasification reactor
CN104210854B (en) * 2013-05-31 2016-12-28 袁东日 a suction device
CN104210854A (en) * 2013-05-31 2014-12-17 袁东日 Suction device
CN105129432A (en) * 2015-09-18 2015-12-09 江苏海狮机械集团有限公司 Washing room cloth grass air feeding system
CN105084008A (en) * 2015-09-18 2015-11-25 江苏海狮机械集团有限公司 Linen air conveying system for laundry room
CN106185278A (en) * 2016-08-30 2016-12-07 山东华唐环保科技有限公司 A kind of coal dust metering device
CN106185278B (en) * 2016-08-30 2018-06-19 山东华唐环保科技有限公司 A kind of coal dust dosing device
CN109178940A (en) * 2018-10-29 2019-01-11 北京拓威能效技术有限公司 pipeline switching device
CN114671252A (en) * 2022-03-17 2022-06-28 常州大学 Gas explosion type micro powder feeding device and powder feeding method thereof

Also Published As

Publication number Publication date
SE9101908D0 (en) 1991-06-20
SE9101908L (en) 1992-12-21
SE469070B (en) 1993-05-10

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