EP1053797A2 - Séparateur centrifuge - Google Patents

Séparateur centrifuge Download PDF

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Publication number
EP1053797A2
EP1053797A2 EP00110094A EP00110094A EP1053797A2 EP 1053797 A2 EP1053797 A2 EP 1053797A2 EP 00110094 A EP00110094 A EP 00110094A EP 00110094 A EP00110094 A EP 00110094A EP 1053797 A2 EP1053797 A2 EP 1053797A2
Authority
EP
European Patent Office
Prior art keywords
classifier
section
centrifugal
wreath
outlet cross
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP00110094A
Other languages
German (de)
English (en)
Other versions
EP1053797A3 (fr
Inventor
Klaus Dieter Dr. Tigges
Werner Bischoff
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.)
BBP Energy GmbH
Original Assignee
BBP Energy GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BBP Energy GmbH filed Critical BBP Energy GmbH
Publication of EP1053797A2 publication Critical patent/EP1053797A2/fr
Publication of EP1053797A3 publication Critical patent/EP1053797A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
    • B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B11/00—Arrangement of accessories in apparatus for separating solids from solids using gas currents
    • B07B11/06—Feeding or discharging arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B7/00—Selective separation of solid materials carried by, or dispersed in, gas currents
    • B07B7/08—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force
    • B07B7/083—Selective separation of solid materials carried by, or dispersed in, gas currents using centrifugal force generated by rotating vanes, discs, drums, or brushes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K1/00—Preparation of lump or pulverulent fuel in readiness for delivery to combustion apparatus
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C2015/002—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs combined with a classifier
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2201/00—Pretreatment of solid fuel
    • F23K2201/10—Pulverizing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23K—FEEDING FUEL TO COMBUSTION APPARATUS
    • F23K2201/00—Pretreatment of solid fuel
    • F23K2201/30—Separating

Definitions

  • the invention relates to a centrifugal classifier for classifying a visible-carrier gas mixture with the characteristics of The preamble of claim 1.
  • centrifugal classifiers are used in process engineering Processes in which a dust-carrier gas mixture occurs, and also for the crushing and grinding drying of moist Raw material used.
  • the classifiers serve a predetermined Adjust the fineness of dust in the visible material / carrier gas mixture.
  • the lamella classifier is in the direction of flow of the regrind-carrier gas mixture stream is a stationary one Distributor upstream. After all, they are also combined static-dynamic centrifugal classifier known. All these Centrifugal classifiers are removed from the material to be viewed from the outside flowed inwards and thus essentially have one radial entry and an axial exit. This is done a separation between coarse and fine goods as Equilibrium sighting between gravity and flow forces each depending on the type of classifier in different proportions in the upstream, Deflections, centrifugal fields and vertebral sinks.
  • the invention has for its object the exit of the to design generic centrifugal classifier such that the dust distribution in the discharge pipes is even.
  • the invention is based on the knowledge that the known centrifugal classifiers the dust distribution in the room above the classifier is uneven, whereas in Output cross section of the classifier the dust evenly in the Visible material / carrier gas mixture is distributed.
  • the invention is therefore the mixture of visible and carrier gas directly from the Discharge cross section of the classifier and the Exhaust pipes fed.
  • Each discharge pipe then leads into the Visible material / carrier gas mixture an equal amount of visible material from.
  • each discharge pipe is one is assigned to its own point of consumption.
  • the sifter is in advantageous embodiment of the invention with a coal mill connected and each discharge pipe led to a burner, so can be equipped with such burners in one Combustion chamber the combustion of coal evenly carry out.
  • the classifiers shown are centrifugal classifiers static, dynamic or static-dynamic design. You will be in process plants used to in a classifiable carrier gas mixture to set a desired dust rating.
  • the centrifugal classifiers can also be used for a mill Mill drying of moist raw material, e.g. B. using coal be followed by a hot carrier gas. As mills come roll mills, ball mills, beater mills or Tube mills come into consideration.
  • the centrifugal classifier consists of a classifier housing 1 which be placed on the housing of a mill, not shown can.
  • the interior of the classifier housing 1 on the input side in connection with the grinding chamber of the mill.
  • the classifier housing 1 On its upper, output-side end is the classifier housing 1 closed by a lid 2.
  • a feed pipe 3 In the vertical longitudinal axis the classifier housing 1, a feed pipe 3 is arranged, the serves to feed the raw coal into the mill.
  • the Feed pipe 3 opens into the grinding chamber of the mill.
  • the upper end of the feed pipe 3 is through the cover 2 of the Sifter housing 1 led to the outside and to a coal feed connected.
  • a funnel 4 that widens upwards and is open at the bottom is at a distance from the wall of the classifier housing 1 and Feed pipe 3 arranged.
  • the funnel 4 is on the wall the classifier housing 1 is supported.
  • the produced in the mill from regrind and carrier or Existing mixture of drying gas or another mixture of visible material and carrier gas flows upwards through the gap between the funnel 4 and the wall of the classifier housing 1 and occurs radially from the outside in the formed by the flaps 5 Wreath.
  • the Mixture flow a redirection and possibly also a Swirl.
  • the coarse grain of the Visible good down and is through the funnel 4 Mix flow of visible material and carrier gas is returned in the opposite direction and gets into the mill.
  • the fine grain of the visible material occurs together with the carrier gas through the annular space between the Immersion tube 7 and the feed tube 3 axially out of the classifier and becomes an end user via several discharge pipes 8 fed.
  • This end user is one in the present case Coal dust with multiple burners, each of which one is connected to one of the discharge pipes 8.
  • the classifier shown in FIGS. 2 and 3 is correct in its basic structure with the flap classifier according to FIG. 1 match, but is as a dynamic centrifugal classifier trained and has instead of a fixed wreath of Fold a classifier rotor with a rotating ring of 5 vertically aligned or inclined slats 9.
  • This Wreath is attached to a driven hollow shaft 10 which surrounds the feed pipe 3 at a short distance.
  • the Sifter rotor is from a ring of fixed blinds 11 surrounded, which serve as a diffuser and the mixture flow Feed the classifier rotor radially.
  • the mode of action of the Classifier rotor largely corresponds to that of Flap classifier according to Fig. 1. In contrast to this can However, with the classifier rotor, a greater degree of dust fineness is achieved become. It also comes with the ability to control the speed of the Sifter rotor change, another influence on the Dust fineness added.
  • the central feed pipe 3 in the in FIGS. 1 to 3rd shown sifting can also be omitted and by a led directly into the grinding room of the mill Coal supply line to be replaced.
  • the sifter is like that constructed, as shown by way of example in FIG. 4.
  • the Wreath of the blades 9 of the classifier rotor is on a massive Fixed shaft 13 to which a drive motor 14 engages.
  • the massive shaft 13 is enclosed by a protective housing 15, that together with the shaft 13 from above through the cover 2 in the classifier housing 1 protrudes.
  • the funnel 4 below the classifier rotor goes into a Return line 16, which penetrates the classifier housing 1 and in the coal feed of the mill or in the Return pipe of the tube mill opens.
  • the axial exit cross section 17 is formed by the annular space between the dip tube 7 and the feed tube 3 (Fig. 1) or the hollow shaft 10 (Fig. 2, 3) or the protective housing 15 (Fig. 4).
  • the Dust distribution due to the flow conditions in the Centrifugal classifiers evenly distributed.
  • the Exit cross section 17 - as in Fig. 5 exemplarily for the static centrifugal classifier shown - in segments 18 divided, which are preferably the same size. Any of these Starting from the outlet cross section 17, segments 18 are also included one of the discharge pipes 8 via a respective transition piece 19 connected. 1 and 5, four discharge pipes 8 are on the centrifugal classifier connected. Accordingly, the Outlet cross section 17 divided into four segments 18.
  • the discharge pipes 8 are spatially in the Extension of the center line of the segments 18.
  • the Transition pieces 19 are bent radially outwards.
  • the Outlet cross section 17 can also be divided into segments 18 in this way be that the discharge pipes 8 spatially offset from the Center line of the segments 18 are aligned. In this case the connecting transition pieces 19 are radial and tangential bent outwards.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combined Means For Separation Of Solids (AREA)
  • Centrifugal Separators (AREA)
  • Cyclones (AREA)
EP00110094A 1999-05-19 2000-05-13 Séparateur centrifuge Withdrawn EP1053797A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1999123109 DE19923109A1 (de) 1999-05-19 1999-05-19 Zentrifugalsichter
DE19923109 1999-05-19

Publications (2)

Publication Number Publication Date
EP1053797A2 true EP1053797A2 (fr) 2000-11-22
EP1053797A3 EP1053797A3 (fr) 2001-01-17

Family

ID=7908596

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00110094A Withdrawn EP1053797A3 (fr) 1999-05-19 2000-05-13 Séparateur centrifuge

Country Status (4)

Country Link
EP (1) EP1053797A3 (fr)
JP (1) JP2000343040A (fr)
CA (1) CA2303742A1 (fr)
DE (1) DE19923109A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2201811C2 (ru) * 2000-12-18 2003-04-10 Шишкин Сергей Федорович Центробежный воздушно-проходной классификатор
CN105344422A (zh) * 2015-11-09 2016-02-24 成都兴业雷安电子有限公司 一种对原料再次破碎的装置
CN116550463A (zh) * 2023-05-31 2023-08-08 内蒙古广汇选煤有限责任公司 一种中煤反洗系统及方法

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105879975A (zh) * 2016-06-24 2016-08-24 中材（天津）粉体技术装备有限公司 一种立式辊磨导风环装置
CN107051706A (zh) * 2017-06-20 2017-08-18 华北电力大学（保定） 一种动静结合的中速磨煤机
CN114653439B (zh) * 2022-02-25 2024-12-13 杨婷婷 一种生物质燃料成型造粒装置
CN115254314A (zh) * 2022-09-03 2022-11-01 日照联浩新型建材有限公司 一种立式辊磨机

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3121937C2 (de) * 1981-06-03 1987-04-30 Gebr. Pfeiffer Ag, 6750 Kaiserslautern Mühlensichter
FR2658589B1 (fr) * 1990-02-20 1995-03-31 Stein Industrie Procede d'alimentation d'un foyer de chaudiere en charbon pulverise et en air, separateur pour la mise en óoeuvre de ce procede, et dispositif d'alimentation en charbon pulverise et en air d'un foyer de chaudiere selon ce procede.
JP2617623B2 (ja) * 1991-01-21 1997-06-04 三菱重工業株式会社 ローラミル
DE4423815C2 (de) * 1994-07-06 1996-09-26 Loesche Gmbh Mühlensichter
JPH081094A (ja) * 1994-06-24 1996-01-09 Mitsubishi Heavy Ind Ltd 回転式分級装置
DE29505311U1 (de) * 1995-03-29 1995-06-01 Omya GmbH, 50968 Köln Zentrifugalkraftsichter
AUPO875297A0 (en) * 1997-08-22 1997-09-18 Transfield Pty Limited Improved device for the removal of non-combustibles from mills
FR2777476B1 (fr) * 1998-04-16 2000-06-23 Alsthom Gec Separateur de particules combustibles dispose en amont d'une chaudiere et comportant un unique clapet d'isolement

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2201811C2 (ru) * 2000-12-18 2003-04-10 Шишкин Сергей Федорович Центробежный воздушно-проходной классификатор
CN105344422A (zh) * 2015-11-09 2016-02-24 成都兴业雷安电子有限公司 一种对原料再次破碎的装置
CN116550463A (zh) * 2023-05-31 2023-08-08 内蒙古广汇选煤有限责任公司 一种中煤反洗系统及方法
CN116550463B (zh) * 2023-05-31 2024-03-15 内蒙古广汇选煤有限责任公司 一种中煤反洗系统及方法

Also Published As

Publication number Publication date
JP2000343040A (ja) 2000-12-12
EP1053797A3 (fr) 2001-01-17
CA2303742A1 (fr) 2000-11-19
DE19923109A1 (de) 2000-11-23

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