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WO2008128530A1 - Système et procédé de fixation des poussières - Google Patents

Système et procédé de fixation des poussières Download PDF

Info

Publication number
WO2008128530A1
WO2008128530A1 PCT/DE2008/000690 DE2008000690W WO2008128530A1 WO 2008128530 A1 WO2008128530 A1 WO 2008128530A1 DE 2008000690 W DE2008000690 W DE 2008000690W WO 2008128530 A1 WO2008128530 A1 WO 2008128530A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
dust
bulk material
particles
electrode
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/DE2008/000690
Other languages
German (de)
English (en)
Inventor
Thomas Ossevorth
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.)
Sandvik Mining and Construction Supply GmbH
Sandvik Mining and Construction Oy
Original Assignee
Sandvik Mining and Construction Supply GmbH
Sandvik Mining and Construction Oy
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 Sandvik Mining and Construction Supply GmbH, Sandvik Mining and Construction Oy filed Critical Sandvik Mining and Construction Supply GmbH
Publication of WO2008128530A1 publication Critical patent/WO2008128530A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/88—Cleaning-out collected particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/40—Electrode constructions
    • B03C3/45—Collecting-electrodes
    • B03C3/49—Collecting-electrodes tubular
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/34—Constructional details or accessories or operation thereof
    • B03C3/74—Cleaning the electrodes
    • B03C3/76—Cleaning the electrodes by using a mechanical vibrator, e.g. rapping gear ; by using impact

Definitions

  • the present invention relates to a system for binding dust, in particular when conveying bulk material, with at least one housing in which an electrode is arranged in order to generate an electric field between the electrode and the housing.
  • the invention further relates to a method for
  • Dust binding in particular in the case of bulk material conveying, in which an electrode arranged in a housing forms an electric field between the electric field
  • Electrode and the housing generates and charge-carrying particles of a located in the housing dust-air mixture on an inner wall of the
  • dust When conveying or transporting bulk material, dust often forms, in particular if the bulk material is transferred from a transport device, for example to another transport and / or storage device.
  • the dust development is enhanced if the bulk material overcomes a certain drop height during transfer.
  • the individual particles of the dust produced during the transfer have only a very small particle size, so that the particles can float over a longer period of time in the environment. This forms a dust-air mixture that exerts a harmful effect not only on the production process, but also on the environment, personnel and / or the environment.
  • the material loss of the bulk material occurring due to the dust development is not insignificant.
  • the dust-air mixture can be passed through suitable filter means with a plurality of small openings, in which the dust particles in attach the filter devices to the boundaries of the openings.
  • the degree of purity of the dedusted or filtered exhaust air in this case depends on a fineness of the filter devices, the size and number of openings, the thickness of the filter cake and the dust particle size.
  • the filter devices Since the particles of dust are deposited in the filter devices during this filtering, the individual openings continue to increase over time until the filter device finally becomes clogged. Due to the changing opening size, the filter properties are also not constant. Furthermore, the stuffed with the dust particles or clogged filter devices must be cleaned regularly or replaced by fresh, unused filter devices. The exchanged and replaced filter devices are then either to dispose of, the amount of dust particles are lost to the material flow of the bulk material, or they need to be elaborately reconditioned to re-supply the dust particles the material flow or as a separated material with a certain particle size other uses available to deliver.
  • the dedusted dust-air mixture exits the dust binding system as exhaust air, which still contains a residual amount of dust. Although much of the particulate matter has been filtered out, the incompletely cleaned exhaust air continues to exert a deleterious effect on the environment, personnel and / or the environment.
  • a division of the particles depending on their size is possible for example by means of known air classifier.
  • falling bulk material is blown from the side with air of a defined flow rate.
  • the individual particles are deflected to different degrees from the flowing air, so that in each case collecting particles of certain orders of magnitude accumulate in several collecting containers, which are arranged one behind the other in the flow direction.
  • collecting particles of certain orders of magnitude accumulate in several collecting containers, which are arranged one behind the other in the flow direction.
  • In the exhaust air are the smallest particles, for example, in the order of a few microns, but still present.
  • the invention provides that at least one discharge element is provided to direct particles from a dust-air mixture out of the housing and to separate from the bulk material.
  • the essence of the invention is that a part of the particles of the rising dust-air mixture is filtered out and taken from the material flow. The proportion of particles of this particular particle size is then reduced in the remaining bulk material and the filtered-out dust particles are available for other use. Furthermore, since dust separation and dust binding are carried out, no harmful exhaust air is produced.
  • At least one vibrator device is preferably provided on an outer side of the housing in order mechanically to release the dust which has been deposited on an inner wall of the housing and which adheres electrostatically by means of a vibrating movement.
  • the vibrator is an unbalance motor, which requires only a relatively low power consumption.
  • An advantageous embodiment of the system according to the invention provides that the housing can be arranged above a section of a conveyor belt and the housing has an opening towards the conveyor belt. With a suitable opening size is ensured by this arrangement that the resulting dust almost completely rises in the housing and only a small part escapes into the environment as harmful and the environment polluting exhaust air.
  • one discharge element is provided on two opposite side edges of the opening in the longitudinal direction of the housing.
  • the discharge element is a discharge plate extending in the longitudinal direction of the housing, which has a first longitudinal edge pointing into the interior of the housing and a second longitudinal edge protruding from the housing. Due to the planar design as a sheet a structurally simple construction of the dust binding system is possible.
  • the deflecting plate is arranged below the side edge of the opening and with an inclination oriented downwardly outward from the interior of the housing.
  • an additional side conveyor belt is preferably provided below the second longitudinal edge of the deflecting plate, which conveys the dust particles falling off the deflecting plate.
  • FIG. 1 shows a longitudinal section through an inventive system for
  • FIG. 2 shows a corresponding cross section through the dust binding system according to the invention from FIG.
  • Figure 1 shows an embodiment of a system according to the invention for dust binding, which is used in conjunction with a transfer of bulk material from a first conveyor belt 1 to a second conveyor belt 2.
  • the conveyor belts 1 and 2 used are formed in a known manner.
  • the bulk material (not shown) from the first conveyor belt 1 falls through a transfer chute 3 on the second conveyor belt 2.
  • the conveying direction of the second conveyor belt 2 is indicated in the figure by the arrow 4.
  • the dust binding system according to the invention is arranged.
  • the dust-binding system has a housing 5, in which a dust-air mixture rises, which arises during the transfer and the falling of the bulk material.
  • an electrode 6 is arranged, which has a plurality of spaced electrode plates 7.
  • the electrode is fastened to the housing 5 by means of a holder 8.
  • the holder 8 may optionally be provided with an insulating layer.
  • the electrode 6 is connected to a suitable high voltage supply 9, which is controlled via a central control device 10.
  • the housing 5 extends in the longitudinal direction along the conveying direction.
  • an unbalance motor 11 is mounted, which has a mechanical shaking movement of the housing 5 causes. It is sufficient if the unbalance motor 11 is only turned on periodically for a defined time. The switching on and off of the unbalanced motor 11 can also be controlled by means of the central control device 10.
  • a collecting device 14 for example, a suitable container
  • the side conveyor 12 can move permanently for particle transport. Alternatively it can be provided that at standstill of the side conveyor belt 12 first separated dust particles
  • the dust particles 13 are collected and at defined intervals the side conveyor belt 12 starts to supply the accumulated material of the collecting device 14.
  • the dust particles 13 may also be pneumatic, with a screw conveyor or the like of the collecting device
  • Figure 2 shows a cross-sectional view along the line A-A of Figure 1, which in turn shows a longitudinal sectional view along the line B-B of Figure 2.
  • a conveyor belt surface of the second conveyor belt 2 formed by three in each case known manner in a side-by-side manner and with a certain angle to one another is shown with the bulk material 16 thereon.
  • the housing 5 has at the bottom of an opening, below which the second conveyor belt 2 runs along with the bulk material 16 thereon.
  • the agglomerates fall down due to gravity.
  • the agglomerates can already be previously supported by a mechanical shaking movement of the housing 5 due to the unbalance motor 11 (see Figure 1) detach from the inner wall 18 and fall down.
  • the circumference of the inner wall 18 of the housing 5 can be divided into two side sections 20 and a middle section 21 by means of the illustrated auxiliary line 19. In these three sections 20, 21, each section occupies approximately one third of the area of the inner wall 18. The falling dust agglomerates of the central region 21 fall back onto the second conveyor belt 2 and the bulk material 16 located thereon.
  • the dust agglomerates falling down the two side sections 20 of the inner wall 18 each fall on a deflector plate 22.
  • This has a first longitudinal edge 23 facing the interior of the housing 5 and a second longitudinal edge 24 projecting outwardly from the housing 5.
  • the deflecting plate 22 is arranged in principle between the side edge of the opening of the housing 5 and the second conveyor belt 2 and aligned substantially parallel to the side edge in the longitudinal direction of the housing 5.
  • the deflector 22 is further inclined in the transverse direction of the housing 5 downwards such that the first longitudinal edge 23 is arranged higher than the second longitudinal edge 24. Thereby, the dust particles 13 of the slope along the deflector 22 can be conveyed out of the housing interior to the outside.
  • a further unbalance motor 25 is arranged on the deflector 22, in order to ensure that the dust particles 13 do not adhere electrostatically to the deflector 22.
  • the conveying direction of the side conveyor belts 12 may be equal to the conveying direction of the bulk material 16 (arrow 4 in Figure 1) or provided opposite thereto. Also, the two side conveyor belts 12 can run either in the same direction or opposite to each other.
  • the separated dust particles 13 are conveyed by the conveyor belts 12 to corresponding collection devices 14, for example a suitable container.
  • FIG. 2 shows support systems 26 and 27 for both the second conveyor belt 2 and the dust binding system according to the invention.
  • the support system 26 has a frame 28 which carries the arrangement of the support rollers 15.
  • the frame 28 is held by a plurality of supports 29 from a bottom surface (not shown) spaced.
  • the second conveyor belt 2 can be oriented both substantially horizontally and with a corresponding angle of inclination to the horizontal plane.
  • the housing 5 is held by support arms 30, which are spaced from the bottom surface via corresponding support posts 31, so that the housing 5 is arranged above the second conveyor belt 2.
  • the dust binding to avoid environmentally harmful, hazardous and / or polluting exhaust air and the separation of material bodies of a certain particle size, in particular of the order of the diameter of about 10 to 100 microns from the material flow at the same time instead of.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Electrostatic Separation (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

L'invention concerne un système de fixation des poussières, notamment lors du transport de matières en vrac, comportant un boîtier (5) contenant une électrode (6) destinée à produire un champ électrique entre l'électrode (6) et le boîtier (5). L'invention vise à améliorer la qualité et la polyvalence d'une matière en vrac. A cet effet, au moins un élément de déviation est prévu pour dévier des particules à partir d'un mélange air-poussières, hors du boîtier, et séparer celles-ci de la matière en vrac.
PCT/DE2008/000690 2007-04-20 2008-04-18 Système et procédé de fixation des poussières Ceased WO2008128530A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200710019342 DE102007019342B3 (de) 2007-04-20 2007-04-20 System und Verfahren zur Staubbindung
DE102007019342.6 2007-04-20

Publications (1)

Publication Number Publication Date
WO2008128530A1 true WO2008128530A1 (fr) 2008-10-30

Family

ID=39744741

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/DE2008/000690 Ceased WO2008128530A1 (fr) 2007-04-20 2008-04-18 Système et procédé de fixation des poussières

Country Status (2)

Country Link
DE (2) DE202007018586U1 (fr)
WO (1) WO2008128530A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103301945A (zh) * 2012-03-17 2013-09-18 钟方明 封闭部分电场通道清灰的方法与静电除尘器
CN105645018A (zh) * 2016-03-28 2016-06-08 天津华派集装箱制造有限公司 一种皮带运输机静电抑尘装置及其控制方法
CN108906329A (zh) * 2018-07-18 2018-11-30 天津华派集装箱制造有限公司 电极系统及静电抑尘装置
CN112299061A (zh) * 2019-07-31 2021-02-02 江苏绿洁节能有限公司 一种皮带机抑尘装置用阴极组件

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012108782B4 (de) * 2012-09-18 2017-12-28 Wagner Lizenzvermarktung Gmbh Verfahren und Vorrichtung zur Behandlung von Holzpellets
CN104773468A (zh) * 2015-03-17 2015-07-15 浙江中科新光铭光电科技有限公司 一种分选粒子用的摊平机构
CN113070154B (zh) * 2021-03-09 2023-04-25 上饶中材机械有限公司 一种高效除尘的水泥熟料输送机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3608275A (en) * 1969-01-07 1971-09-28 Metallgesellschaft Ag Electrostatic precipitator
SU1041444A1 (ru) * 1982-04-19 1983-09-15 Пермский политехнический институт Устройство дл подавлени пыли на ленточном конвейере
SU1574828A1 (ru) * 1988-02-29 1990-06-30 Белгородский технологический институт строительных материалов им.И.А.Гришманова Аспирационное укрытие места загрузки сыпучим материалом ленточного конвейера
WO2000010236A1 (fr) * 1998-08-17 2000-02-24 Roxon Oy Dispositif de suppression des poussieres
DE202005002927U1 (de) * 2005-02-23 2005-07-14 Reitmeir, Thomas Elektrode zur Separation von Stoffgemischen

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB216789A (en) 1923-11-06 1924-06-05 Metallbank & Metallurg Ges Ag Improvements in apparatus for the electrical precipitation of suspended particles from gaseous fluids
GB230841A (fr) 1924-03-12 1925-07-02 Lodge-Cottrell Limited
GB295890A (en) 1927-12-22 1928-08-23 Metallbank & Metallurg Ges Ag Improvements in apparatus for the electrical precipitation of suspended particles from gaseous fluids
DE2460962C3 (de) 1974-12-21 1980-07-10 Kloeckner-Humboldt-Deutz Ag, 5000 Koeln Elektrostatischer Staubabscheider

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3608275A (en) * 1969-01-07 1971-09-28 Metallgesellschaft Ag Electrostatic precipitator
SU1041444A1 (ru) * 1982-04-19 1983-09-15 Пермский политехнический институт Устройство дл подавлени пыли на ленточном конвейере
SU1574828A1 (ru) * 1988-02-29 1990-06-30 Белгородский технологический институт строительных материалов им.И.А.Гришманова Аспирационное укрытие места загрузки сыпучим материалом ленточного конвейера
WO2000010236A1 (fr) * 1998-08-17 2000-02-24 Roxon Oy Dispositif de suppression des poussieres
DE202005002927U1 (de) * 2005-02-23 2005-07-14 Reitmeir, Thomas Elektrode zur Separation von Stoffgemischen

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103301945A (zh) * 2012-03-17 2013-09-18 钟方明 封闭部分电场通道清灰的方法与静电除尘器
CN105645018A (zh) * 2016-03-28 2016-06-08 天津华派集装箱制造有限公司 一种皮带运输机静电抑尘装置及其控制方法
CN108906329A (zh) * 2018-07-18 2018-11-30 天津华派集装箱制造有限公司 电极系统及静电抑尘装置
CN112299061A (zh) * 2019-07-31 2021-02-02 江苏绿洁节能有限公司 一种皮带机抑尘装置用阴极组件

Also Published As

Publication number Publication date
DE102007019342B3 (de) 2008-12-18
DE202007018586U1 (de) 2008-12-11

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