EP0891404B1 - Verfahren zur zerkleinerung und trocknung von braunkohle - Google Patents

Verfahren zur zerkleinerung und trocknung von braunkohle Download PDF

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Publication number
EP0891404B1
EP0891404B1 EP97916398A EP97916398A EP0891404B1 EP 0891404 B1 EP0891404 B1 EP 0891404B1 EP 97916398 A EP97916398 A EP 97916398A EP 97916398 A EP97916398 A EP 97916398A EP 0891404 B1 EP0891404 B1 EP 0891404B1
Authority
EP
European Patent Office
Prior art keywords
fluidised bed
vapours
bed drying
sifting
coal
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.)
Expired - Lifetime
Application number
EP97916398A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0891404A1 (de
Inventor
Malte Knizia
Stefan Laux
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 EP0891404A1 publication Critical patent/EP0891404A1/de
Application granted granted Critical
Publication of EP0891404B1 publication Critical patent/EP0891404B1/de
Anticipated expiration legal-status Critical
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10F—DRYING OR WORKING-UP OF PEAT
    • C10F5/00—Drying or de-watering peat
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10F—DRYING OR WORKING-UP OF PEAT
    • C10F7/00—Working-up peat
    • C10F7/02—Disintegrating peat
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B1/00—Preliminary treatment of solid materials or objects to facilitate drying, e.g. mixing or backmixing the materials to be dried with predominantly dry solids
    • F26B1/005—Preliminary treatment of solid materials or objects to facilitate drying, e.g. mixing or backmixing the materials to be dried with predominantly dry solids by means of disintegrating, e.g. crushing, shredding, milling the materials to be dried

Definitions

  • the invention relates to a method for comminuting and drying Lignite, in which the lignite has at least two comminution steps undergoes and in an indirectly heated fluidized bed dryer is dried, with at least a first comminution step before the Fluid bed drying takes place and from the fluid bed drying via a Dust separator vapors are removed.
  • the so-called WTA drying process removes the dust Vapors compacted and for indirect heating of the fluidized bed dryer used.
  • the fluidized bed dryer is included Steam is heated and the vapors are condensed and the water removed Heat used for other purposes.
  • the brothers can go to the sighting without any safety problems Grist can be used.
  • the fines separated by the sighting can be fed to the fluidized bed drying or the dust separator, using the brothers themselves.
  • Subclaims 2 - 10 are directed to preferred procedures.
  • raw lignite RK becomes a first Shredding device 2 supplied.
  • the crushed coal 3 is a distributor into a vapor stream B brought in via line 4 into one Separator 5 introduced.
  • the coarse material of the classifier 5 is passed through an allocator 6 introduced into a second shredding device 7.
  • the material to be comminuted in the comminution device 7 is removed with the aid of a vapor stream brought in via line 8 via a line 8 ' Fluidized bed dryer 9 fed.
  • the fluidized bed dryer 9 is about indirectly heated at least one heating surface 10, the z. B. in the WTA process can be charged with compressed vapors.
  • the Fluidized bed dryer 9 is provided with schematically illustrated nozzles 11 a fluidizing agent.
  • the fluidized bed dryer becomes dried lignite GK is withdrawn, as is done by the extraction device 12 is shown schematically.
  • the from the fluidized bed dryer 9 over Vapors withdrawn from line 13 are in a vapor electrostatic filter 14 dusted.
  • the dust coal SK is drawn off via a discharge device 15.
  • the line 4 with the branch line 8 is at the output of The vapor electrostatic precipitator is connected and there is a vapor blower in the line 16 arranged. With the output of the electrostatic filter 14 there is still one Vapor discharge line 17 connected. As with the WTA process, this can to a vapor compressor, not shown, or as in the DWT process be led to a vapor condenser, not shown, or into the Atmosphere.
  • shredding equipment used for shredding wet coal are suitable. These include in particular hammer mills, in which the Shredding by impact on impact edges. These include e.g. B. Impact wheel mills and impact splitters.
  • the raw brown coal RK is fed to a comminution device 18 19 fed.
  • the shredding device is designed so that it via a line 20 which is connected directly to the fluidized bed dryer 9, can suck in dust-free vapors.
  • the one in the shredder 19 crushed coal is a line separator 21 'a separator 21 fed.
  • the coarse material of the separating separator 21 is via line 22 of the shredder 19 again abandoned while the fines is fed to the fluidized bed dryer 10 via line 23.
  • a self-priming device can be used here as a shredding device Beater wheel mill are used in the crushing and conveying of the transport gas take place in one step. If necessary, it is possible the vapors sucked in via line 19 also from one not shown Turbine-induced steam additionally overheat, as indicated by 24 is shown schematically. The operation of this arrangement is similar to that Operation of a beater wheel mill on raw lignite firing.
  • the dried brown coal GK drawn off via the extraction device 12 is a shredding device 25 with a line 25 " downstream separator 25 'abandoned, which in its Function of the separator according to FIG. 2 is comparable.
  • the shredding device 25 is in FIG. 3 as a non-self-priming shredding device shown so that you on a line 26 with the on Blower 27 dusted vapors are fed.
  • the fine material of the separating separator 25 ' is not via a line 29 the fluidized bed dryer 9, but fed to the vapor electrostatic precipitator 14, not only the vapors emerging from the fluidized bed dryer, but also dusted the sighting vapors.
  • the Shredding device 25 is not a sifter, but via a line 32 which by means of the vapor stream brought in via line 26 B regrind discharged from the comminution device 25 directly into the Fluid bed dryer is blown, preferably above the fluidized bed in the fluidized bed dryer, the top of which O is shown schematically in FIG. 4.
  • a separation of the Fine material is reached, which is fed to the vapor electrostatic filter 14 via line 13 becomes.
  • the coarse material sinks into the fluidized bed and becomes the one again Trigger device 12 promoted.
  • the A baffle plate 33 is arranged on the free space above the fluidized bed the gas solids mixture stream emerging from line 32 impacts.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Drying Of Solid Materials (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Beans For Foods Or Fodder (AREA)
EP97916398A 1996-03-27 1997-03-26 Verfahren zur zerkleinerung und trocknung von braunkohle Expired - Lifetime EP0891404B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19612187A DE19612187C2 (de) 1996-03-27 1996-03-27 Verfahren zur Zerkleinerung und Trocknung von Braunkohle
DE19612187 1996-03-27
PCT/EP1997/001547 WO1997035944A1 (de) 1996-03-27 1997-03-26 Verfahren zur zerkleinerung und trocknung von braunkohle

Publications (2)

Publication Number Publication Date
EP0891404A1 EP0891404A1 (de) 1999-01-20
EP0891404B1 true EP0891404B1 (de) 2001-10-24

Family

ID=7789638

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97916398A Expired - Lifetime EP0891404B1 (de) 1996-03-27 1997-03-26 Verfahren zur zerkleinerung und trocknung von braunkohle

Country Status (7)

Country Link
EP (1) EP0891404B1 (tr)
AU (1) AU721894B2 (tr)
DE (2) DE19612187C2 (tr)
ES (1) ES2166534T3 (tr)
PL (1) PL329156A1 (tr)
TR (1) TR199801936T2 (tr)
WO (1) WO1997035944A1 (tr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104334989A (zh) * 2012-05-23 2015-02-04 Rwe动力股份公司 用于对矿湿性原褐煤进行选矿的方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19946517C2 (de) * 1999-09-28 2001-09-06 Bbp Energy Gmbh Verfahren zur Zerkleinerung und Trocknung von feuchtem Brennstoff
CN102553708B (zh) * 2012-01-19 2013-06-05 中国矿业大学 一种高灰高水易泥化褐煤洗选工艺
CN109374383B (zh) * 2018-12-20 2024-02-27 长沙开元仪器有限公司 自动制样系统及方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE830375C (de) * 1949-04-03 1952-02-04 Grosskraftwerk Mannheim A G Kohlenstaubfeuerung mit Mahltrocknung
AT367447B (de) * 1980-04-28 1982-07-12 Voest Alpine Ag Verfahren zur herstellung eines veredelungsproduktes aus braunkohle
US4403996A (en) * 1982-02-10 1983-09-13 Electric Power Development Co. Method of processing low rank coal
DD224648A1 (de) * 1984-06-21 1985-07-10 Inst Energetik Zre Leipzig Verfahren zur rohkohletrocknung und mahlung zu brennstaub
US4725337A (en) * 1984-12-03 1988-02-16 Western Energy Company Method for drying low rank coals
DE3644806C1 (en) * 1986-12-31 1993-05-13 Rheinische Braunkohlenw Ag Process and plant for drying crude lignite in a fluidized-bed dryer

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104334989A (zh) * 2012-05-23 2015-02-04 Rwe动力股份公司 用于对矿湿性原褐煤进行选矿的方法
CN104334989B (zh) * 2012-05-23 2016-08-17 Rwe动力股份公司 用于对矿湿性原褐煤进行选矿的方法

Also Published As

Publication number Publication date
DE19612187C2 (de) 2001-11-15
DE59705088D1 (de) 2001-11-29
PL329156A1 (en) 1999-03-15
ES2166534T3 (es) 2002-04-16
DE19612187A1 (de) 1997-10-02
AU2505997A (en) 1997-10-17
WO1997035944A1 (de) 1997-10-02
TR199801936T2 (tr) 1999-01-18
AU721894B2 (en) 2000-07-13
EP0891404A1 (de) 1999-01-20

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